JP5139638B2 - Waterproof layer structure and construction method - Google Patents
Waterproof layer structure and construction method Download PDFInfo
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- JP5139638B2 JP5139638B2 JP2006050994A JP2006050994A JP5139638B2 JP 5139638 B2 JP5139638 B2 JP 5139638B2 JP 2006050994 A JP2006050994 A JP 2006050994A JP 2006050994 A JP2006050994 A JP 2006050994A JP 5139638 B2 JP5139638 B2 JP 5139638B2
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- 238000010276 construction Methods 0.000 title claims description 15
- 238000000576 coating method Methods 0.000 claims description 62
- 229920005989 resin Polymers 0.000 claims description 62
- 239000011347 resin Substances 0.000 claims description 62
- 239000011248 coating agent Substances 0.000 claims description 61
- 239000000835 fiber Substances 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000004744 fabric Substances 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 31
- 238000012360 testing method Methods 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 239000004925 Acrylic resin Substances 0.000 claims description 22
- 229920000178 Acrylic resin Polymers 0.000 claims description 20
- 238000004078 waterproofing Methods 0.000 claims description 16
- 229920002978 Vinylon Polymers 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000011342 resin composition Substances 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 68
- 239000000203 mixture Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 239000011120 plywood Substances 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 10
- 239000003365 glass fiber Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 9
- 238000005470 impregnation Methods 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 229910052918 calcium silicate Inorganic materials 0.000 description 4
- 239000000378 calcium silicate Substances 0.000 description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Floor Finish (AREA)
- Laminated Bodies (AREA)
Description
本発明は、建築分野で使用する防水材料、特にベランダ防水用途において、耐衝撃性、耐水性等を高め、耐久性を向上させる防水層構造及び施工方法に関するものである。 The present invention relates to a waterproof layer structure and a construction method for improving impact resistance, water resistance, etc., and improving durability in waterproofing materials used in the field of construction, especially in veranda waterproofing applications.
防水用途として施工された繊維強化樹脂層は、強度や表面硬度が高く強靭であり、耐久性、寸法安定性に優れた防水であるため、住宅ベランダ、屋上、駐車場等の床面ライニング工法として注目されている。このような防水施工は、不燃板、合板、ケイ酸カルシウム板、モルタル、コンクリート等の従来使用される防水下地に繊維強化樹脂層を形成し、その繊維強化樹脂層の上に、耐候性、平滑性、美観の向上や繊維強化樹脂層の保護を目的にトップコート樹脂層を設けることによって行われる。 The fiber reinforced resin layer constructed for waterproofing is strong and strong in surface strength and durability, and has excellent durability and dimensional stability, so it can be used as a floor lining method for residential verandas, rooftops, parking lots, etc. Attention has been paid. Such waterproof construction forms a fiber reinforced resin layer on a conventionally used waterproof base such as non-combustible board, plywood, calcium silicate board, mortar, concrete, etc., and weather resistance, smoothness on the fiber reinforced resin layer. It is carried out by providing a topcoat resin layer for the purpose of improving property and aesthetics and protecting the fiber reinforced resin layer.
防水用途の繊維強化樹脂層として代表的なＦＲＰ防水用不飽和ポリエステル樹脂に関しては、回収ＰＥＴボトルを有効に活用でき、且つ廃棄物の利用による性能低下がほとんどないＦＲＰ防水用不飽和ポリエステル樹脂とその工法について開示されている（特許文献１）。 Regarding FRP waterproof unsaturated polyester resin, which is a representative fiber reinforced resin layer for waterproofing, the recovered PET bottle can be used effectively, and the FRP waterproof unsaturated polyester resin has almost no performance degradation due to the use of waste. A construction method is disclosed (Patent Document 1).
また、比較的厚い防水塗膜を形成する際に、表面に皮張りや微細なひび割れが発生し難く、乾燥速度が速くて、高い伸び率を持つ防水塗膜が形成され、防水塗膜を形成する際の作業手順が制約されない水系防水塗料に関する工法として、アクリル酸エステル類を主成分とするアクリル系共重合体、粒状微粉末成分及び水の混合物から形成される水性エマルジョン防水塗料組成物について開示されている（特許文献２）。 Also, when forming a relatively thick waterproof coating, it is difficult to generate skinning or fine cracks on the surface, the drying speed is high, and a waterproof coating with a high elongation is formed, forming a waterproof coating Disclosed is an aqueous emulsion waterproof coating composition formed from a mixture of an acrylic copolymer based on acrylic esters, a granular fine powder component, and water as a method for a water-based waterproof coating that does not restrict the work procedure when (Patent Document 2).
防水下地上に繊維強化樹脂層とトップコート樹脂層とを積層した水系防水の施工方法において，繊維強化樹脂層にチョップドストランドマット状の補強布を使用することで，耐衝撃性，耐水性に優れ，且つ比較的少ない工程にて形成防水塗膜厚さを0.5〜5.0mmの範囲で確保できる水性アクリル樹脂系繊維強化樹脂層について開発され、本発明はこれをさらに改良したものである。（特許文献３）
解決しようとする課題点は、不燃板、合板、ケイ酸カルシウム板、モルタル、コンクリート等の従来使用される防水下地に形成防水塗膜厚さ１．０ｍｍ〜４．０ｍｍを確保でき、含浸性、作業性、そして耐疲労性などの耐久性に優れ、水系塗材による防水層構造及び施工方法を得ることである。 The problems to be solved are as follows: a waterproof coating thickness of 1.0 mm to 4.0 mm formed on a conventionally used waterproof base such as a non-combustible plate, plywood, calcium silicate plate, mortar, concrete, etc. It is excellent in durability such as workability and fatigue resistance, and is to obtain a waterproof layer structure and a construction method using an aqueous coating material.
請求項１の発明は，繊維布が水系塗材で塗布含浸される繊維強化樹脂層を有する床防水構造において，前記繊維布がガラスチョップドストランドマット状補強布或いはビニロンチョップドストランドマット状補強布であり，繰り返された前記繊維強化樹脂層が２層であり，水系塗材が水系アクリル樹脂系塗材であり，下地との間にプライマー層を有し，最上層に保護トップコート層を有し，
床防水構造は，水系塗材によるベランダ防水に係るものであり，
プライマー層は，水系エポキシ樹脂系プライマーを０．１〜０．２ｋｇ／ｍ ２ 塗布して成り，
繊維強化樹脂層は，固形分が５０〜８５重量％,粘度が０．５〜７．０Ｐａ・ｓ／２３℃の前記水系アクリル樹脂系塗材を塗布し,その上に、目付け量が１００〜３００ｇ／ｍ ２ のガラスチョップドストランドマット状補強布または目付け量が６０〜１２０ｇ／ｍ ２ のビニロンチョップドストランドマット状補強布を敷き，さらに前記水系アクリル樹脂系塗材を塗布し，次に前記と同一のガラスチョップドストランドマット状補強布またはビニロンチョップドストランドマット状補強布を敷き，さらに前記水系アクリル樹脂系塗材を塗布し，繊維強化樹脂層の水系アクリル樹脂系塗材の塗布量は１．０〜４．０ｋｇ／ｍ ２ であり，
保護トップコート層は，トップコート樹脂層として水系アクリル系樹脂からなるトップコート樹脂組成物を０．１〜０．４ｋｇ／ｍ ２ 塗布して成り，
ＪＡＳＳ８（防水工事）Ａ形試験体で２段階において試験片３体とも破断，亀裂が発生しないという耐疲労性を有することを特徴とする防水層構造である。
The invention of claim 1 is a floor waterproof structure having a fiber reinforced resin layer coated and impregnated with a water-based coating material, wherein the fiber cloth is a glass chopped strand mat-like reinforcing cloth or a vinylon chopped strand mat-like reinforcing cloth. The repeated fiber reinforced resin layer is two layers, the water-based coating material is a water-based acrylic resin-based coating material, has a primer layer between the base and a protective top coat layer on the top layer,
The floor waterproof structure is related to the veranda waterproofing with water-based coating material,
The primer layer is formed by applying 0.1 to 0.2 kg / m 2 of an aqueous epoxy resin primer ,
The fiber-reinforced resin layer has a solid content of 50 to 85% by weight and a viscosity of 0.5 to 7.0 Pa · s / 23 ° C., and the basis weight thereof is 100 to 300 g / glass chopped strand mat reinforcement fabric or basis weight of m 2 is laid vinylon chopped strand mat reinforcement fabric 60～120G / m 2, and further applying the water-based acrylic resin coating material, then the same A glass chopped strand mat-like reinforcing cloth or a vinylon chopped strand mat-like reinforcing cloth is laid, and the water-based acrylic resin-based coating material is further applied, and the amount of water-based acrylic resin-based coating material applied to the fiber-reinforced resin layer is 1.0 to 4.0 kg / m 2 ,
The protective topcoat layer is formed by applying 0.1 to 0.4 kg / m 2 of a topcoat resin composition made of a water-based acrylic resin as a topcoat resin layer ,
JASS8 (waterproofing construction) A waterproof layer structure characterized by having fatigue resistance such that no breakage or cracking occurs in all three specimens in the A-type test specimen in two stages .
本発明により、水系塗材によるベランダ防水において、含浸性、作業性が良好であり、耐久性上必要な塗膜厚さ１．０ｍｍ〜４．０ｍｍを容易に確保・施工でき、耐衝撃性、耐水性、耐疲労性などの耐久性に優れる施工方法及び防水層構造を得ることができた。また、水系塗材により、増改築という周囲環境、特に、作業者、周辺居住者への溶剤の健康上、災害上の影響をなくすことができる。 According to the present invention, in the waterproofing of the veranda by the water-based coating material, the impregnation property and the workability are good, and the coating film thickness of 1.0 mm to 4.0 mm necessary for durability can be easily secured and applied. A construction method and a waterproof layer structure excellent in durability such as water resistance and fatigue resistance could be obtained. In addition, the water-based coating material can eliminate the adverse effects on the surrounding environment of extension and reconstruction, in particular, the health of the solvent and the disaster on the workers and residents in the vicinity.
本発明は、不燃板、合板、ケイ酸カルシウム板、モルタル、コンクリート等の下地上に防水塗膜を形成するもので、全体としての耐久性、防水性を確保する上で塗膜厚さ１．０ｍｍ〜４．０ｍｍが必要で、耐久性を確保・向上させるのに起因する塗膜厚さを得るには、所定目付量の補強布が必要となる。しかし、より少ない膜厚、より少ない繊維布で性能を確保することが望ましい。これを防水層構造及び施工方法で解決した。 The present invention forms a waterproof coating on the ground such as non-combustible plate, plywood, calcium silicate plate, mortar, concrete, etc., and the coating thickness is 1. for ensuring the durability and waterproofing as a whole. A thickness of 0 mm to 4.0 mm is required, and in order to obtain a coating film thickness resulting from ensuring and improving durability, a reinforcing fabric with a predetermined basis weight is required. However, it is desirable to ensure performance with a smaller film thickness and fewer fiber cloths. This was solved by the waterproof layer structure and construction method.
繊維布
ガラス繊維、炭素繊維、合成樹脂繊維の乾式、湿式不織布及び織布を言い、好ましくは補強を目的とした補強布が好ましい。
Fiber cloth This refers to dry, wet non-woven fabric and woven fabric of glass fiber, carbon fiber and synthetic resin fiber, preferably a reinforcing fabric for the purpose of reinforcement.
補強布
繊維を織布としたものやチョップドストランドマットが補強布として適し、価格の点で後者が好ましい。水系塗材との親和性、補強の点でガラスチョップドストランドマット状補強布、ビニロンチョップドストランドマット状補強布がさらに好ましい。
A woven fabric of reinforced fabric fibers or a chopped strand mat is suitable as the reinforced fabric, and the latter is preferred in terms of cost. A glass chopped strand mat-like reinforcing cloth and a vinylon chopped strand mat-like reinforcing cloth are more preferable in terms of affinity with a water-based coating material and reinforcement.
水系塗材
ポリアクリル樹脂エマルジョン、アクリル共重合樹脂エマルジョン、ポリウレタン樹脂エマルジョン、ポリ酢酸ビニル樹脂エマルジョン、シリコン樹脂エマルジョン、アクリルシリコン樹脂エマルジョン等の各種樹脂エマルジョンを単独或いは併用して前記繊維布を結合する塗材で、耐候性、結合材としての物性バランスから、結合材がポリアクリル樹脂系エマルジョンである水系塗材が好ましい。
Water-based coating material A coating that binds the fiber fabric using various resin emulsions such as polyacrylic resin emulsion, acrylic copolymer resin emulsion, polyurethane resin emulsion, polyvinyl acetate resin emulsion, silicone resin emulsion, and acrylic silicone resin emulsion alone or in combination. A water-based coating material in which the binder is a polyacrylic resin emulsion is preferable from the viewpoint of weather resistance and physical property balance as a binder.
施工方法
本発明の防水用繊維強化樹脂層の施工方法は、不燃板、合板、ケイ酸カルシウム板、モルタル、コンクリート等の防水下地上に、必要に応じてプライマーを施し、プライマーを施工した場合にはプライマー乾燥後、ガラス繊維、ビニロン繊維等のチョップドストランドマット状の補強布と有機溶剤、揮発性反応希釈剤を含まない水系塗材を必須として形成される繊維強化樹脂層を２層以上形成し、これらの繊維強化樹脂層上にトップコート樹脂層を施工するというものである。
Construction method The construction method of the fiber reinforced resin layer for waterproofing of the present invention is that when a primer is applied on a waterproof base such as a non-combustible board, plywood, calcium silicate board, mortar, concrete, etc. After drying the primer, form two or more fiber reinforced resin layers, which are made of glass fiber, vinylon fiber and other chopped strand mat-like reinforcing fabric and an organic solvent and a water-based coating material that does not contain volatile reaction diluent. The top coat resin layer is applied on these fiber reinforced resin layers.
上記、防水下地の処理工程において、その下地と防水層でもある繊維強化樹脂層との密着を良好にするため、汚れ、付着物、または、脆弱な表面層等を除去することが好ましく、例えば、ショットブラスト、サンドペーパー等により表面の不陸を調整・研掃して表面を清潔にすることが推奨される。また、防水下地の乾燥不足による密着性不良を抑止するために必要に応じて水系のプライマー層を０．１〜０．２ｋｇ／ｍ２塗布する。好ましくは、水系エポキシ樹脂系プライマーが使用に適している。 In the above-described waterproof base treatment step, in order to improve the adhesion between the base and the fiber reinforced resin layer that is also a waterproof layer, it is preferable to remove dirt, deposits, or a fragile surface layer, for example, It is recommended to clean and clean the surface by shot blasting, sandpaper, etc. In addition, an aqueous primer layer is applied in an amount of 0.1 to 0.2 kg / m 2 as necessary to suppress poor adhesion due to insufficient drying of the waterproof base. Preferably, an aqueous epoxy resin primer is suitable for use.
プライマーの乾燥後、繊維強化樹脂層の成形を行う。繊維強化樹脂層とは、ガラス繊維、ビニロン繊維等のチョップドストランドマット状の補強布と、有機溶剤、揮発性反応希釈剤を含まない水系塗材とが複合された状態で２層以上形成されたものである。繊維強化樹脂層に用いる補強布は、必要塗膜厚さ、含浸性、耐疲労性等の要求品質に応じて目付量１００〜３００ｇ／ｍ２とすることが好ましい。 After drying the primer, the fiber reinforced resin layer is formed. The fiber reinforced resin layer is formed of two or more layers in a state where a chopped strand mat-like reinforcing cloth such as glass fiber or vinylon fiber is combined with an aqueous coating material not containing an organic solvent and a volatile reaction diluent. Is. The reinforcing fabric used for the fiber reinforced resin layer is preferably made to have a basis weight of 100 to 300 g / m 2 according to the required quality such as required coating thickness, impregnation property, and fatigue resistance.
ガラス繊維、ビニロン繊維等のチョップドストランドマット状の補強布の具体例として、富士ファイバーグラス(株)製ガラスチョップドストランドマットＭＣ２３０、日本バイリーン(株)製ビニロンチョップドストランドマットＶＭ−１１０を例として挙げることができ、重ね貼りが適している。
この補強布と複合して繊維強化樹脂層となるのに適した水系塗材は、ＪＩＳ Ｋ５６０１−１−２：１９９９（塗料成分試験方法−第１部：通則−第２節：加熱残分）に準じて測定した固形分が５０〜８５重量％、ＢＭ回転粘度計（Ｎｏ．３またはＮｏ．４、６０ｒｐｍ）を用い、ＪＩＳ Ｋ５６００−２−３：１９９９［塗料一般試験方法−第２部：塗料の性状・安定性−第３節：粘度（コーン・プレート粘度計法）］に準じて測定した２３℃雰囲気下における粘度が０．５〜７．０Ｐａ・ｓ、及びＴＩ値が１．０〜７．０の範囲にあるもの好ましい。この粘度及びＴＩ値の範囲から外れた場合、両者の下限未満となると塗布具による均一化が円滑に行えない他、防水下地に高低がある場合、塗材の流出で樹脂の充填されていない部分が生じ、両者の上限を超えると浸透性が悪い他、塗布具の操作に負荷が高く、作業性が悪くなる。ガラス板上に塗布し含浸性確認実験を行った際、補強布の裏面（ガラス側）に樹脂が含浸・充填されることが好ましい。ガラス繊維等のチョップドストランドマット状の補強布の目付量がガラス繊維で１００ｇ／ｍ２より少ないと形成する繊維強化樹脂層の厚みが小さくなり、必要とされる耐疲労性等の耐久性が確保できず、より多くの層を形成するために工程数が多くなり長い施工時間を要することが懸念されるため施工性に問題がある。その目付量がガラス繊維で３００ｇ／ｍ２よりも多いと水性塗材の補強布への含浸性が劣り、良好な繊維強化樹脂層を得られないことが懸念されるため好ましくない。前記目付量はビニロン繊維チョップドストランドマット状の補強布では６０〜１２０ｇ／ｍ２である。
Specific examples of chopped strand mat-like reinforcing fabrics such as glass fiber and vinylon fiber include glass chopped strand mat MC230 manufactured by Fuji Fiber Glass Co., Ltd. and vinylon chopped strand mat VM-110 manufactured by Nippon Vilene Co., Ltd. as examples. Can be applied, and overlaying is suitable.
A water-based coating material suitable for forming a fiber-reinforced resin layer in combination with this reinforcing cloth is JIS K5601-1-2: 1999 (Paint component test method-Part 1: General rules-Section 2: Heating residue) JIS K5600-2-3: 1999 [Paint General Test Method-Part 2: Using a BM rotational viscometer (No. 3 or No. 4, 60 rpm) Properties and Stability of Paint—Section 3: Viscosity (Cone / Plate Viscometer Method)] The viscosity in a 23 ° C. atmosphere is 0.5 to 7.0 Pa · s, and the TI value is 1.0. Those in the range of ˜7.0 are preferred. When the viscosity and TI value are out of the range, if it is less than the lower limit of both, uniforming with the applicator cannot be performed smoothly, and if the waterproof base is high or low, the part that is not filled with resin due to the outflow of the coating material When the upper limit of both is exceeded, the permeability is poor, the load on the operation of the applicator is high, and the workability is poor. When applying on a glass plate and conducting an impregnation confirmation experiment, it is preferable that the back surface (glass side) of the reinforcing cloth is impregnated and filled with resin. If the weight of the reinforced strand mat-like reinforcing fabric such as glass fiber is less than 100 g / m 2 with glass fiber, the thickness of the fiber reinforced resin layer to be formed becomes small, and the required durability such as fatigue resistance is secured. However, there is a problem in workability because there is a concern that the number of processes increases and a long construction time is required to form more layers. If the basis weight is more than 300 g / m 2 with glass fiber, the impregnation property of the aqueous coating material into the reinforcing fabric is inferior, and it is feared that a good fiber reinforced resin layer cannot be obtained. The weight per unit area is 60 to 120 g / m 2 for a vinylon fiber chopped strand mat-like reinforcing cloth.
補強布の目付量をガラス繊維で１００〜３００ｇ／ｍ２で、２〜３層で繰返し繊維強化樹脂層を形成し、水系塗材の塗布量は１．０〜４．０ｋｇ／ｍ２で形成されることが好ましいが、必要塗膜厚さ、乾燥時間、耐疲労性等の必要性質に応じて決められる。 The basis weight of the reinforcing fabric is 100 to 300 g / m 2 with glass fiber, a fiber reinforced resin layer is repeatedly formed with 2 to 3 layers, and the coating amount of the aqueous coating material is formed with 1.0 to 4.0 kg / m 2 . However, it is determined according to necessary properties such as required coating thickness, drying time, and fatigue resistance.
なお、プライマーの乾燥後、主に耐疲労性に起因するところの下地の追従性をさらに向上させるために、繊維強化樹脂層に使用するのと同じ水系塗材を０．１〜２．０ｋｇ／ｍ２塗布することも可能である。
この工程を行う時は、水系塗材が乾燥後、上記、工程により繊維強化樹脂層の形成工程を行う。
In addition, after the primer is dried, in order to further improve the followability of the ground mainly due to fatigue resistance, the same aqueous coating material used for the fiber reinforced resin layer is added in an amount of 0.1 to 2.0 kg / It is also possible to apply m 2 .
When performing this process, after a water-based coating material dries, the formation process of a fiber reinforced resin layer is performed according to the above-mentioned process.
最上繊維強化樹脂層の形成後、トップコート樹脂層の形成工程を行う。
トップコート樹脂組成物としては、有機溶剤を含まず、乾燥後の耐候性、隠蔽性等に優れた水系塗材が好ましい。具体的には、アイカ工業(株)製水系１液アクリルウレタン樹脂系トップコート（ＪＡ−１８０）、亜細亜工業（株）製水系アクリルウレタン樹脂系塗料（ネオグロスＵ−２００）や水系アクリル樹脂系合成樹脂エマルジョンペイント（ＲＦコート）等、市販の水系アクリル系樹脂のものが使用に適している。さらに、必要に応じて顔料等を添加し、着色して使用することが可能である。トップコート樹脂組成物の塗布量は０．１〜０．４ｋｇ／ｍ２で形成されることが好ましいが、乾燥時間、耐衝撃性等の必要性質に応じて決められる。
After the uppermost fiber reinforced resin layer is formed, a step of forming a topcoat resin layer is performed.
As the topcoat resin composition, an aqueous coating material that does not contain an organic solvent and is excellent in weather resistance after drying, hiding properties, and the like is preferable. Specifically, water-based one-component acrylic urethane resin-based topcoat (JA-180) manufactured by Aika Kogyo Co., Ltd., water-based acrylic urethane resin-based paint (Neo-Gloss U-200) manufactured by Asia, and water-based acrylic resin-based synthesis. A commercially available water-based acrylic resin such as a resin emulsion paint (RF coat) is suitable for use. Furthermore, it is possible to add a pigment or the like and color it as necessary. The coating amount of the topcoat resin composition is preferably 0.1 to 0.4 kg / m 2 , but is determined according to necessary properties such as drying time and impact resistance.
このようにして、形成した繊維強化樹脂層は耐疲労性等の耐久性に優れ、含浸性、作業性が優れる施工方法とするため、少ない目付量の補強布を用いた繊維強化樹脂層を２層以上形成することが好ましい。 In this way, the formed fiber reinforced resin layer is excellent in durability such as fatigue resistance, and the construction method is excellent in impregnation and workability. It is preferable to form more than one layer.
以下、実施例と比較例によって具体的に説明する。なお、本発明はこれらの実施例に限定されるものではない。 Hereinafter, the present invention will be specifically described with reference to examples and comparative examples. The present invention is not limited to these examples.
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、１液水系アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ ３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．５ｋｇ／ｍ２塗布し、その上にガラスチョップドストランドマット（富士ガラスファイバーグラス（株）製、ＭＣ２３０目付け量０．２３ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を０．８ｋｇ／ｍ２塗布して、この工程を２回繰り返した。繊維補強層が乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（アイカ工業（株）製、ＪＡ−１８０）を０．２ｋｇ／ｍ２塗布した。 An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, one-component water-based acrylic resin composition, JA-110 (solid content 70%, viscosity-BM, No. 3, 60 rpm 3.60 Pa · s, TI value 3.30) manufactured by Aika Industry Co., Ltd. is 0. 0.5 kg / m 2 was applied, and a glass chopped strand mat (manufactured by Fuji Glass Fiber Glass Co., Ltd., MC230 weight per unit area 0.23 kg / m 2 ) was laid thereon, and JA-110 was further added to 0.8 kg / m 2. Once applied, this process was repeated twice. After the fiber reinforcing layer was dried, 0.2 kg / m 2 of an aqueous one-component acrylic urethane resin-based topcoat (manufactured by Aika Industry Co., Ltd., JA-180) was applied to the topcoat resin layer.
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、１液水系アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ、３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．５ｋｇ／ｍ２塗布し、その上にビニロンチョップドストランドマット（日本バイリーン（株）製、ＶＭ−１１０、目付け量０．１１ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を０．５ｋｇ／ｍ２塗布して、この工程を２回繰り返した。繊維補強層が乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（アイカ工業（株）製、ＪＡ−１８０）を０．２ｋｇ／ｍ２塗布した。 An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, a one-component water-based acrylic resin composition, JA-110 (solid content 70%, viscosity-BM, No. 3, 60 rpm, 3.60 Pa · s, TI value 3.30) manufactured by Aika Industry Co., Ltd. 0.5 kg / m 2 was applied, and a vinylon chopped strand mat (manufactured by Japan Vilene Co., Ltd., VM-110, basis weight 0.11 kg / m 2 ) was laid on top, and JA-110 was further 0.5 kg. / M 2 was applied and this process was repeated twice. After the fiber reinforcing layer was dried, 0.2 kg / m 2 of an aqueous one-component acrylic urethane resin-based topcoat (manufactured by Aika Industry Co., Ltd., JA-180) was applied to the topcoat resin layer.
比較例１
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、１液水系アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ、３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．５ｋｇ／ｍ２塗布し、その上にガラスチョップドストランドマット（富士ガラスファイバーグラス（株）製、ＭＣ２３０ 目付け量０．２３ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を０．５ｋｇ／ｍ２塗布して乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（アイカ工業（株）製、ＪＡ−１８０）を０．２ｋｇ／ｍ２塗布した。
Comparative Example 1
An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, a one-component water-based acrylic resin composition, JA-110 (solid content 70%, viscosity-BM, No. 3, 60 rpm, 3.60 Pa · s, TI value 3.30) manufactured by Aika Industry Co., Ltd. 0.5 kg / m 2 was applied, and a glass chopped strand mat (manufactured by Fuji Glass Fiber Glass Co., Ltd., MC230 weight per unit area 0.23 kg / m 2 ) was laid thereon, and JA-110 was further added to 0.5 kg / m. after drying for 2 coating, the topcoat resin layer, the water-based one-pack acrylic urethane resin-based top coating (Aica Kogyo Co., EN-180) was 0.2 kg / m 2 coating.
比較例２
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、１液水系アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ、３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．５ｋｇ／ｍ２塗布し、その上にビニロンチョップドストランドマット（日本バイリーン（株）製、ＶＭ−１１０、目付け量０．１１ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を１．０ｋｇ／ｍ２塗布して乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（アイカ工業（株）製、ＪＡ−１８０）を０．２ｋｇ／ｍ２塗布した。
Comparative Example 2
An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, a one-component water-based acrylic resin composition, JA-110 (solid content 70%, viscosity-BM, No. 3, 60 rpm, 3.60 Pa · s, TI value 3.30) manufactured by Aika Industry Co., Ltd. 0.5 kg / m 2 was applied, and a vinylon chopped strand mat (manufactured by Japan Vilene Co., Ltd., VM-110, basis weight 0.11 kg / m 2 ) was laid on top, and JA-110 was further added to 1.0 kg / After applying m 2 and drying, 0.2 kg / m 2 of an aqueous one-component acrylic urethane resin type top coat (manufactured by Aika Industry Co., Ltd., JA-180) was applied to the top coat resin layer.
比較例３
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、水系１液アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０を０．５ｋｇ／ｍ２塗布し、その上にガラスチョップドストランドマット（アイカ工業（株）製、ＪＲ−９８、目付け量０．４５ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を１．０ｋｇ／ｍ２塗布して乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（亜細亜工業（株）製、ネオグロスＵ−２００）を０．２ｋｇ／ｍ２塗布した。
Comparative Example 3
An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, 0.5 kg / m 2 of an aqueous one-component acrylic resin composition, JA-110 manufactured by Aika Kogyo Co., Ltd. was applied, and a glass chopped strand mat (manufactured by Aika Kogyo Co., Ltd., JR-98, A weight per unit area of 0.45 kg / m 2 ) is applied, and JA-110 is further applied to 1.0 kg / m 2 and dried. Then, an aqueous one-component acrylic urethane resin top coat (Asia Industrial Co., Ltd.) is applied to the top coat resin layer. ), NeoGloss U-200) was applied at 0.2 kg / m 2 .
比較例４
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、 JA-170A及びJA-170Bの2：1配合物）を０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、水系１液アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ、３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．８ｋｇ／ｍ２塗布し、その上にビニロンチョップドストランドマット（日本バイリーン（株）製、ＶＭ−１３５ 目付け量０．１４ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を１．０ｋｇ／ｍ２塗布して乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（亜細亜工業（株）製、ネオグロスＵ−２００）を０．２ｋｇ／ｍ２塗布した。
Comparative Example 4
Apply 0.2kg / m 2 of water based two-component epoxy resin primer (Aika Kogyo Co., Ltd., JA-170A and JA-170B 2: 1 blend) on plywood substrate and dry, then apply fiber reinforced resin layer. In order to form, an aqueous one-component acrylic resin composition, JA-110 manufactured by Aika Industry Co., Ltd. (solid content 70%, viscosity-BM, No. 3, 60 rpm, 3.60 Pa · s, TI value 3.30) 0.8 kg / m 2 , and a vinylon chopped strand mat (manufactured by Japan Vilene Co., Ltd., VM-135 weight per unit area 0.14 kg / m 2 ) is laid thereon, and JA-110 is further added to 1.0 kg / m 2. After applying m 2 and drying, 0.2 kg / m 2 of an aqueous one-component acrylic urethane resin-based top coat (manufactured by Asia, Neo Gloss U-200) was applied to the top coat resin layer.
比較例５
合板下地上に水系２液エポキシ樹脂系プライマー（アイカ工業（株）製、ＪＡ−１７０Ａ及びＪＡ−１７０Ｂの２：１配合物）０．２ｋｇ／ｍ２塗布し乾燥後、繊維強化樹脂層を形成するため、１液水系アクリル樹脂系組成物、アイカ工業（株）製ＪＡ−１１０（固形分７０％、粘度−ＢＭ、Ｎｏ．３、６０ｒｐｍ、３．６０Ｐａ・ｓ、ＴＩ値３．３０）を０．５ｋｇ／ｍ２塗布し、その上にガラスチョップドストランドマット（セントラル硝子（株）製、ＥＣＭ３８０ 目付け量０．３８ｋｇ／ｍ２）を敷いて、さらにＪＡ−１１０を０．８ｋｇ／ｍ２塗布して、この工程を２回繰り返した繊維補強層が乾燥後、トップコート樹脂層に、水系１液アクリルウレタン樹脂系トップコート（亜細亜工業（株）製、ネオグロスＵ−２００）を０．２ｋｇ／ｍ２塗布した。
実施例、比較例における、評価試験の測定は以下の方法で測定・評価し、その結果については表１に示した。
Comparative Example 5
An aqueous two-component epoxy resin primer (2: 1 blend of JA-170A and JA-170B manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 is applied onto the plywood substrate and dried to form a fiber reinforced resin layer. Therefore, a one-component water-based acrylic resin composition, JA-110 (solid content 70%, viscosity-BM, No. 3, 60 rpm, 3.60 Pa · s, TI value 3.30) manufactured by Aika Industry Co., Ltd. 0.5 kg / m 2 is applied, and a glass chopped strand mat (manufactured by Central Glass Co., Ltd., ECM380 basis weight 0.38 kg / m 2 ) is laid thereon, and JA-110 is further applied at 0.8 kg / m 2. Then, after the fiber reinforced layer after repeating this process twice is dried, an aqueous one-component acrylic urethane resin-based topcoat (Neogro U-200, manufactured by Asia Kogyo Co., Ltd.) is added to the topcoat resin layer. 2kg / m 2 was applied.
In the examples and comparative examples, the evaluation test was measured and evaluated by the following method. The results are shown in Table 1.
引張強さ（Ｎ／ｍｍ）、伸び率（％）及び抗張積（Ｎ／ｍｍ）試験
Ｉ．引張強さ試験用試験体の作製
引張強さ試験用試験体は、ＪＩＳ Ａ６０２１（建築用塗膜防水材）に準じて実施例、比較例の条件（プライマーはなし）で作製し、ダンベル状２号試験片のものを使用し、下記に従ってそれぞれ養生を行った。
１液乾燥型は２３±２℃、５０％（ＲＨ）で２４時間標準静置後４０℃７２時間乾燥を行い、その後２３±２℃、５０％（ＲＨ）で７時間以上静置したものを試験した。
２液反応型は２３±２℃、５０％（ＲＨ）１６８時間静置したものを試験した。
ＩＩ．引張強さ試験
ＪＩＳ Ａ６０２１に準じて、インストロン万能試験機を用いて、Ｉで作製した試験体の引張強さ試験を行って、引張強さ、伸び率、及び抗張積を算出した。
Tensile strength (N / mm), elongation (%) and tensile product (N / mm) tests
I. Preparation of test specimen for tensile strength test A test specimen for tensile strength test was prepared in accordance with JIS A6021 (waterproofing material for architectural coatings) under the conditions of Examples and Comparative Examples (no primer), A dumbbell-shaped No. 2 test piece was used and cured according to the following.
The one-component dry type is a product that was left at 23 ± 2 ° C. and 50% (RH) for 24 hours and then dried at 40 ° C. for 72 hours, and then left at 23 ± 2 ° C. and 50% (RH) for 7 hours or more. Tested.
The two-component reaction type was tested after standing at 23 ± 2 ° C. and 50% (RH) for 168 hours.
II. Tensile strength test In accordance with JIS A6021, the tensile strength test of the specimen prepared in I was performed using an Instron universal testing machine, and the tensile strength, elongation rate, and tensile product were calculated.
耐疲労性試験
ＪＡＳＳ ８（防水工事）に準じて行った。（非特許文献１）
A形試験体を用いて２０℃、６０℃、−１０℃の順にひずみ負荷をそれぞれ周期１０分で５００回行い、そのひずみ負荷については０．５ｍｍ〜１．０ｍｍ（１段階）、１．０ｍｍ〜２．０ｍｍ（２段階）、２．５ｍｍ〜５．０ｍｍ（３段階）において行って、どの段階で塗膜の破断、亀裂を発生するか目視で確認した。
本評価結果については，下記の様に区分評価した。
○ ：２段階において試験片３体とも破断、亀裂の発生しないもの。
△○：２段階において試験片１体でも破断、亀裂の発生するもの。
△ ：１段階において試験片１体でも破断、亀裂の発生するもの。
× ：１段階において試験片３体とも破断、亀裂の発生するもの。
Fatigue resistance test was performed according to JASS 8 (waterproofing work). (Non-Patent Document 1)
A strain test was performed 500 times in a cycle of 10 minutes in the order of 20 ° C., 60 ° C., and −10 ° C. using an A-type test body, and the strain load was 0.5 mm to 1.0 mm (one step), 1.0 mm. It was performed at ˜2.0 mm (2 stages) and 2.5 mm to 5.0 mm (3 stages), and it was visually confirmed at which stage the coating film was broken or cracked.
The evaluation results were classified and evaluated as follows.
○: No breakage or cracking occurs in all three specimens in two stages.
[Delta] o: One test piece breaks or cracks in two stages.
Δ: One specimen is broken or cracked at one stage.
X: One in which all three specimens break or crack in one stage.
へこみ試験
ＪＡＳＳ ８（防水工事）に準じて行った。（非特許文献１）
試験温度２０℃の状態に１時間養生後，荷重を２４時間載荷し，荷重載荷後の塗膜表面の穴あきの有無を確認した。荷重は，５ｋｇ，１５ｋｇ，２５ｋｇで行い，各荷重点を変えて，各荷重をそれぞれ２４時間載荷した。
本評価結果は、下記の様に区分評価した。穴あきがないため、目視による形状変化も評価した。
○ ：塗膜表面に穴あきなし、２５ｋｇでもへこみ・割れ無しのもの。
△○：塗膜表面に穴あきなし、１５ｋｇでへこみ・割れ無し、２５ｋｇでへこみ・割れ有りのもの。
△ ：塗膜表面に穴あきなし、１５ｋｇでへこみ・割れ有りのもの。
×△：塗膜表面に穴あきなし、５ｋｇでへこみ・割れ無し、１５ｋｇでへこみ・割れ有りのもの。
× ：塗膜表面に穴あきあり、５ｋｇでへこみ・割れ有りのもの。
The dent test was conducted in accordance with JASS 8 (waterproofing work). (Non-Patent Document 1)
After curing at a test temperature of 20 ° C. for 1 hour, the load was loaded for 24 hours, and the presence or absence of perforation on the coating film surface after loading was confirmed. The loads were 5 kg, 15 kg, and 25 kg, and each load was changed for 24 hours.
This evaluation result was classified and evaluated as follows. Since there was no perforation, the visual shape change was also evaluated.
○: There is no perforation on the surface of the coating film, and there is no dent or crack even at 25 kg.
Δ: No puncture on the coating film surface, no dent / crack at 15 kg, and dent / crack at 25 kg.
Δ: There is no perforation on the coating film surface, and there are dents and cracks at 15 kg.
× Δ: No puncture on the coating surface, no dent / crack at 5 kg, and dent / crack at 15 kg.
X: There is a hole in the coating film surface, and there is a dent / crack at 5 kg.
耐衝撃性試験
ＪＡＳＳ ８（防水工事）に準じて行った。（非特許文献１）
試験温度２０℃の状態に１時間養生後、０．５ｋｇのおもりの塗膜表面に落下させ、穴あきの有無を確認した。落下位置は、０．５ｍ、１．０ｍ、１．５ｍで行い、各落下点を変えて各高さからそれぞれおもりを落下させた。
本評価結果は、下記の様に区分評価した。穴あきがないため、目視による形状変化も評価した。
◎ ：高さ１．５ｍからの落下で塗膜表面に異常無しのもの。
○ ：高さ１．５ｍからの落下で塗膜表面に穴あき無し、へこみ有りのもの。
△○：高さ１．０ｍからの落下で塗膜表面に穴あき無し、へこみ有りのもの。
△ ：高さ１．０ｍからの落下で塗膜表面に穴あき有りのもの。
×△：高さ０．５ｍからの落下で塗膜表面に穴あき無し、へこみ有りのもの。
× ：高さ０．５ｍからの落下で塗膜表面に穴あき有りのもの。
The impact resistance test was performed according to JASS 8 (waterproofing work). (Non-Patent Document 1)
After curing for 1 hour at a test temperature of 20 ° C., the sample was dropped on the surface of a 0.5 kg weight coating to check for perforations. The dropping positions were 0.5 m, 1.0 m, and 1.5 m, and the weights were dropped from each height by changing each dropping point.
This evaluation result was classified and evaluated as follows. Since there was no perforation, the visual shape change was also evaluated.
A: A drop from a height of 1.5 m and no abnormality on the coating film surface.
○: A drop from a height of 1.5 m, with no perforations on the surface of the coating film, and with dents.
Δ: A drop from a height of 1.0 m, no perforation on the coating surface, and a dent.
Δ: A drop from a height of 1.0 m with a hole in the coating surface.
× Δ: A drop from a height of 0.5 m with no perforations on the surface of the coating film and with dents.
X: A thing with a hole in the coating film surface by dropping from a height of 0.5 m.
含浸性試験
２３℃、６０％（ＲＨ）雰囲気下で、寸法１５０×１５０ｍｍの板ガラスを用いて、その面積に合わて補強布を敷き、約２０ｃｍの高さから樹脂約２５０ｇを垂れ流して３０分後ガラス裏面を観察し、含浸性の判定を下記４段階とした。なお、繊維補強層が２層になる実施例及び比較例については、繊維布を２枚重ねて試験した。
◎：垂れ流した直後、裏面に樹脂が含浸される。
○：裏面に垂れ流した樹脂の広がった面積９０％以上が含浸される。
△：裏面に垂れ流した樹脂の広がった面積６０％以上９０％未満が含浸される。
×：裏面に垂れ流した樹脂の広がった面積６０％未満が含浸される。
Impregnation test Under a 23 ° C., 60% (RH) atmosphere, using a sheet glass having a size of 150 × 150 mm, a reinforcing cloth is laid according to the area, and about 250 g of resin is dropped from a height of about 20 cm, and 30 minutes later. The back side of the glass was observed, and the impregnation determination was made in the following four stages. In addition, about the Example and comparative example from which a fiber reinforcement layer becomes two layers, it test | superposed by overlapping two fiber cloths.
A: Immediately after dripping, the back surface is impregnated with resin.
○: 90% or more of the spread area of the resin dripping on the back surface is impregnated.
Δ: 60% or more and less than 90% of the spread area of the resin dripping on the back surface is impregnated.
X: Less than 60% of the spread area of the resin dripping on the back surface is impregnated.
総合評価
耐疲労性試験結果、へこみ試験結果、耐衝撃性試験結果、含浸性試験結果を下記の５段階評価によって、総合的な評価を行った。
○ ：○が３以上で、×がない
△○：○が２以上で、×がない
△ ：△が２以下で、×がない
×△：△が３以下で、×がない
× ：×が１つでもある
Comprehensive evaluation The fatigue evaluation test result, the dent test result, the impact resistance test result, and the impregnation test result were comprehensively evaluated by the following five-step evaluation.
○: ○ is 3 or more, and there is no x Δ ○: ○ is 2 or more, and there is no x Δ: Δ is 2 or less, x is not present x Δ: Δ is 3 or less, x is not present x: x is Even one
Claims (1)
床防水構造は，水系塗材によるベランダ防水に係るものであり，
プライマー層は，水系エポキシ樹脂系プライマーを０．１〜０．２ｋｇ／ｍ ２ 塗布して成り，
繊維強化樹脂層は，固形分が５０〜８５重量％,粘度が０．５〜７．０Ｐａ・ｓ／２３℃の前記水系アクリル樹脂系塗材を塗布し,その上に、目付け量が１００〜３００ｇ／ｍ ２ のガラスチョップドストランドマット状補強布または目付け量が６０〜１２０ｇ／ｍ ２ のビニロンチョップドストランドマット状補強布を敷き，さらに前記水系アクリル樹脂系塗材を塗布し，次に前記と同一のガラスチョップドストランドマット状補強布またはビニロンチョップドストランドマット状補強布を敷き，さらに前記水系アクリル樹脂系塗材を塗布し，繊維強化樹脂層の水系アクリル樹脂系塗材の塗布量は１．０〜４．０ｋｇ／ｍ ２ であり，
保護トップコート層は，トップコート樹脂層として水系アクリル系樹脂からなるトップコート樹脂組成物を０．１〜０．４ｋｇ／ｍ ２ 塗布して成り，
ＪＡＳＳ８（防水工事）Ａ形試験体で２段階において試験片３体とも破断，亀裂が発生しないという耐疲労性を有することを特徴とする防水層構造。
In the floor waterproof structure having a fiber reinforced resin layer coated and impregnated with a water-based coating material, the fiber cloth is a glass chopped strand mat-like reinforcing cloth or a vinylon chopped strand mat-like reinforcing cloth, and the fiber reinforced is repeated. The resin layer is two layers, the water-based coating material is a water-based acrylic resin-based coating material, has a primer layer between the base and a protective top coat layer on the top layer,
The floor waterproof structure is related to the veranda waterproofing with water-based coating material,
The primer layer is formed by applying 0.1 to 0.2 kg / m 2 of an aqueous epoxy resin primer ,
The fiber-reinforced resin layer has a solid content of 50 to 85% by weight and a viscosity of 0.5 to 7.0 Pa · s / 23 ° C., and the basis weight thereof is 100 to 300 g / glass chopped strand mat reinforcement fabric or basis weight of m 2 is laid vinylon chopped strand mat reinforcement fabric 60～120G / m 2, and further applying the water-based acrylic resin coating material, then the same A glass chopped strand mat-like reinforcing cloth or a vinylon chopped strand mat-like reinforcing cloth is laid, and the water-based acrylic resin-based coating material is further applied, and the amount of water-based acrylic resin-based coating material applied to the fiber-reinforced resin layer is 1.0 to 4.0 kg / m 2 ,
The protective topcoat layer is formed by applying 0.1 to 0.4 kg / m 2 of a topcoat resin composition made of a water-based acrylic resin as a topcoat resin layer ,
JASS8 (waterproofing construction) A waterproof layer structure characterized by having a fatigue resistance that no breakage or cracking occurs in all three specimens in the A-type test specimen in two stages .
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