JP4155443B2 - Putty material for humidity control building materials - Google Patents
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Description
【０００１】
【発明の属する技術分野】
本発明は、住宅、倉庫、事務所などの建物内部に用いられる炭酸カルシウム−シリカ系調湿建材の欠損部等に充填する補修材またはその調湿建材間の目地部に充填する目地材として使用する調湿建材用のパテ材に関するものである。
【０００２】
【従来の技術】
調湿建材は、内装用建材として使われて吸放湿をすることにより室内の湿度を調整する機能を有しており、その中でも、優れた調湿性能を有する炭酸カルシウム−シリカ系調湿建材が知られている。この炭酸カルシウム−シリカ系の調湿建材は、珪酸カルシウム水和物を主成分とする粉粒体を、成形後に炭酸硬化させて得ることができる。
そして、とくに窒素ガス吸着法による比表面積が８０〜２５０ｍ2／ｇ、平均細孔直径が１．０〜３０ｎｍの調湿建材（特開２０００−２９７４８３号公報に開示。）を製造することができる。この調湿建材は吸放湿量が多いだけではなく、吸放湿速度すなわち湿度変化に対する応答性にも優れている。
【０００３】
一般に、この調湿建材は内装表面として壁面または下地材に接着剤や釘打ち等で固定され、さらに、その目地部に目地材が充填される。また、施工時あるいは通常の生活において、物等の衝突等により調湿建材が欠けたり傷ついたりした場合は、その部分への補修材の充填作業が行われていた。
【０００４】
【発明が解決しようとする課題】
しかし、この調湿建材は吸放湿性能に優れている一方で、次のような問題点があった。
すなわち、調湿建材は周囲の温度あるいは湿度の変化によって、吸放湿をするためにその外形寸法が変化する。
調湿建材の目地材や補修材としては、セメント、セメントモルタル、石膏、樹脂系パテ、シリコン系シーラント等が通常使用されている。
セメント、セメントモルタル、石膏の目地材や補修材では、吸放湿を繰り返す調湿建材と目地材や補修材との材質や収縮膨張率の違いによって、その境界部分に隙間が生じたり、目地材または補修材が剥離したり、また、違和感が感じられたりしていた。また、樹脂系パテ、シリコン系シーラントの目地材や補修材では、材質の違いによりその境界部分に違和感が感じられていた。
【０００５】
また、調湿建材は壁面または下地材に直接固定されているため、下地材の温度・湿度変化による寸法変化や建築物躯体の歪みなどの影響を直接受ける。そのため、この隙間・剥離の問題がより発生し易い状況となっている。
さらに、温度・湿度変化が大きい室内における目地材または補修材の表面に、膨張収縮による亀裂が発生することもあった。
そこで、本発明は上記問題点を解決して、表面に亀裂が発生し難く、調湿建材との境界部分に隙間・剥離が発生し難く、さらに調湿建材の表面と違和感がない調湿建材用パテ材を提供する。
【０００６】
【課題を解決するための手段】
本発明は前記課題を解決するために、
炭酸カルシウム−シリカ系調湿建材の補修材や該調湿建材間の目地材に使用する調湿建材用パテ材であって、前記パテ材は炭酸カルシウム−シリカ系の粉体１００重量部に対して、繊維材０．１〜７重量部とバインダー０．２〜５０重量部とが混合されている調湿建材用パテ材とした。
【０００７】
【発明の実施の形態】
本発明の実施の形態について以下に説明する。
本発明の調湿建材用パテ材は、炭酸カルシウム−シリカ系の粉体１００重量部に対して、繊維材０．１〜７重量部とバインダー０．２〜５０重量部とが混合されている。
【０００８】
本発明の調湿建材用パテ材は、その主原料が炭酸カルシウム−シリカ系の粉体で構成されているため、パテ材と調湿建材との材質の違いがほとんどなくなる。これにより質感や肌合いも等しくなり、境界部分に違和感を感じることがなくなる。
【０００９】
炭酸カルシウム−シリカ系粉体としては、軽量気泡コンクリート材、コンクリート材あるいはモルタル材、または、それら廃材を粉砕した粉体を炭酸化することにより得ることができる。
これらのコンクリート材はアルカリ性であるが、炭酸化することにより中性となるため、混合されるバインダーや繊維材を劣化させることがない。
【００１０】
また、０．２〜５０重量部のバインダーが混合されていることにより、パテ材が調湿建材表面に強固に接着するようになるため剥離が発生し難くなる。
目地材においても同様に、調湿建材と目地材との接着性が増すために、その境界部分に隙間の発生が起こり難くなる。
混合されるバインダーは、少なすぎると調湿建材との接着性が低くなり、また多すぎるとパテ材の硬化時における乾燥収縮が大きくなり表面の亀裂の発生原因となったり、調湿建材と比べて質感、肌合いが異なった表面となったりする。
【００１１】
さらに、０．１〜７重量部の繊維材が混合されているため、パテ材において補強材として作用する。この働きにより、パテ材の硬化時の乾燥収縮あるいは室内の温度・湿度の日常変化による膨張収縮に起因する表面亀裂の発生を防ぐことが可能となる。
さらに、目地材に使用した場合、調湿建材との高い接着性と繊維材の補強作用により、調湿建材が膨張収縮しても目地材表面の亀裂および調湿建材との境界部分の隙間発生を防ぐことができる。
混合される繊維材は、少なすぎると亀裂が発生しやすくなり、また多すぎるとパテ材の表面に毛羽立ちが見られるようになって、調湿建材とパテ材とで違和感が感じられるようになる。
【００１２】
繊維材としては、ビニロン、アクリル、ポリプロピレン、ポリエチレン等の合成繊維、レーヨン等の再生繊維、あるいはアセテート等の半合成繊維などの有機系短繊維が補強材としての効果がある。また、パルプ等の天然繊維またはそれらの廃材を利用したものも使用できる。
【００１３】
調湿建材とパテ材を構成する炭酸カルシウム−シリカ系の粉体とが同一物質であると、収縮膨張率、質感および肌合いが等しくなるため、調湿建材とパテ材との境界部分がほとんど目立たなくなり望ましい。
【００１４】
さらに、パテ材原料の粉体が、調湿建材原料の粉体と同様に、窒素ガス吸着法による比表面積が８０〜２５０ｍ2 ／ｇで、かつ平均細孔直径が１．５〜３０ｎｍであると、吸放湿量に優れた調湿機能が得られるとともに、その比表面積の広さおよび細孔直径の大きさによりバインダーとの密着性が大きく強固となる。これにより、調湿建材とパテ材との接着力がより大きくなり、剥離の発生防止にさらなる効果を発揮する。
このパテ材原料の粉体は、下記の実施例で使用した調湿建材（クリオン株式会社製「ハーモナイト」）原料の粉体と同等の比表面積、平均細孔直径、細孔径分布であることが、吸放湿量およびその応答性の面で望ましい。
【００１５】
バインダーとしては、シリコーン系、変成シリコーン系、ウレタン系、アクリル系、メチルセルロース系または酢酸ビニル系エマルジョンが使用できる。
弾性が要求される目地用のパテ材には、バインダーとしてシリコーン系、変成シリコーン系、ウレタン系、アクリル系材料が好ましい。また、メチルセルロース系または酢酸ビニル系エマルジョンは、少量でもバインダーとしての性能に優れているため、混合量を０．２重量部〜３０重量部と少なくすることができる。
また、天然材料である海藻糊も同様に少量の混合で使用することができる。
これにより、調湿建材とパテ材との違和感をさらに小さくすることが可能となる。
【００１６】
本発明のパテ材に０．０１〜３重量部の顔料を含有させると、調湿建材の質感、肌合いとさらに微妙な色調も合わせることが可能となるため、より好ましい。顔料は、調湿建材と同様の無機系粉体顔料が最も望ましい。
【実施例】
以下、本発明の実施例および比較例を説明する。
【００１７】
（実施例１）
軽量気泡コンクリートを粉砕した粉体を、炭酸化によりその炭酸化率が８０％以上とした炭酸カルシウム−シリカ系粉体を製造する。
この粉体１００重量部に対して、繊維材として１ｍｍ長のポリプロピレン短繊維１．５重量部、シリコーン系バインダー４０重量部、そして顔料として無機顔料０．２重量部を加えて、均一に拡散するように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が１１０ｍ2／ｇ、かつ、平均細孔直径が４．８ｎｍであった。
【００１８】
また、目地間隔が３ｍｍ設けられた２枚の調湿建材（クリオン株式会社製「ハーモナイト」縦３００ｍｍ×横３００ｍｍ×厚さ８ｍｍ）を、弾性接着剤で石膏ボード上に予め張り付けておく。なお、この調湿建材は、軽量気泡コンクリート粉体をプレス機で加圧成形して板状とした後、炭酸ガスによる炭酸硬化反応によって製造される。
【００１９】
実施例１に用いたクリオン株式会社製「ハーモナイト」の主成分は炭酸カルシウムと非晶質シリカであり、窒素ガス吸着法による比表面積は１１５ｍ2／ｇ、かつ、平均細孔直径が３．２ｎｍの成形体であった。
このクリオン株式会社製「ハーモナイト」は、それを粉砕した粉体の性状が、比表面積８０〜２５０ｍ2／ｇ、平均細孔直径１．５〜３０．０ｎｍとなるように製造された調湿建材である。
この調湿建材は、その細孔径分布において平均細孔径の両側に細孔容量のピークをそれぞれ持っている。そして、その平均値より小さい細孔径部分が比表面積を大きくして十分な吸放湿量を、また、平均値より大きな細孔径が湿度変化に対する速い応答性をそれぞれ調湿建材に具備させている。
そして、この調湿建材の目地部に前記パテ材を充填した。
【００２０】
さらに、前記調湿建材の隅部の１カ所が四角形（縦２０ｍｍ×横２０ｍｍ）に切り欠かれた調湿建材を、同様に石膏ボードに張り付けた後、その切り欠き部をパテ材で元の形状となるように補修をした。
上記目地部への充填および切欠き部への補修作業終了後、室内において自然乾燥を１週間させた後に目地部および補修部の外観観察をした。
【００２１】
（実施例２）
軽量気泡コンクリートを粉砕した粉体を、炭酸化によりその炭酸化率が８０％以上とした炭酸カルシウム−シリカ系粉体を製造する。
この粉体は、比表面積が１０３ｍ2／ｇ、かつ、平均細孔直径が３．５ｎｍであった。
この粉体１００重量部に対して、繊維材として２ｍｍ長のビニロン短繊維０．１重量部、変性シリコーン系バインダー３０重量部、そして顔料として酸化鉄０．０２重量部を加えて、均一に拡散するように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が１０１ｍ2／ｇ、かつ、平均細孔直径が３．８ｎｍであった。
このパテ材を用いて、実施例１と同様に、調湿建材（クリオン株式会社製「ハーモナイト」の目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２２】
（実施例３）
軽量気泡コンクリートを粉砕した粉体１００重量部に対して、繊維材として２ｍｍ長のビニロン短繊維０．２重量部と、顔料として酸化鉄０．０１重量部とを加えて均一となるように混合する。
そして、その混合粉体をプレス機で加圧成形して板状とした後、炭酸ガスで炭酸硬化反応させて、炭酸化率が８０％以上とした炭酸カルシウム−シリカ系の調湿建材を得る。この調湿建材を粉砕した粉体の性状は、比表面積が１０３ｍ2／ｇ、かつ、平均細孔直径が５．３ｎｍであった。
次に、この調湿建材を粉砕した粉体１００重量部に対して、ウレタン系バインダー３０重量部を加えて均一となるように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が９７ｍ2／ｇ、かつ、平均細孔直径が４．３ｎｍであった。
上記調湿建材とパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２３】
（実施例４）
軽量気泡コンクリートを粉砕した粉体１００重量部に対して、繊維材として４ｍｍ長のポリプロピレン短繊維０．５重量部と、顔料として無機顔料０．５重量部を加えて均一となるように混合する。
そして、その混合粉体をプレス機で加圧成形して板状とした後、炭酸ガスで炭酸硬化反応させて、炭酸化率が８０％以上となった炭酸カルシウム−シリカ系の調湿建材を得る。
この調湿建材の性状は、比表面積が１１８ｍ2／ｇ、かつ、平均細孔直径が３．０ｎｍであった。
次に、この調湿建材を粉砕した粉体１００重量部に対して、アクリル系バインダー５０重量部を加えて均一となるように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が１１４ｍ2／ｇ、かつ、平均細孔直径が３．３ｎｍであった。
上記調湿建材とパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２４】
（実施例５）
軽量気泡コンクリートを粉砕した粉体１００重量部に対して、繊維材として２ｍｍ長のアクリル短繊維０．３重量部と、顔料として無機顔料０．８重量部を加えて均一となるように混合する。
そして、その混合粉体をプレス機で加圧成形して板状とした後、炭酸ガスで炭酸硬化反応させて、炭酸化率が８０％以上とした炭酸カルシウム−シリカ系の調湿建材を得る。この調湿建材の性状は、比表面積が１２１ｍ2／ｇ、かつ、平均細孔直径が３．４ｎｍであった。
次に、この調湿建材を粉砕した粉体１００重量部に対して、メチルセルロース系バインダー０．２重量部を加えて均一となるように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が１１４ｍ2／ｇ、かつ、平均細孔直径が３．３ｎｍであった。
上記調湿建材とパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２５】
（実施例６）
軽量気泡コンクリートを粉砕した粉体１００重量部に対して、繊維材として０．５ｍｍ長のパルプ短繊維５重量部と、顔料として無機顔料１．８重量部を加えて均一となるように混合する。
そして、その混合粉体をプレス機で加圧成形して板状とした後、炭酸ガスで炭酸硬化反応させて、炭酸化率が８０％以上となった炭酸カルシウム−シリカ系の調湿建材を得る。この調湿建材の性状は、比表面積が８２ｍ2／ｇ、かつ、平均細孔直径が１０．３ｎｍであった。
次に、この調湿建材を粉砕した粉体１００重量部に対して、酢酸ビニル系バインダー５重量部を加えて均一となるように混合して調湿建材用パテ材を生成した。
なお、このパテ材原料の粉体は、比表面積が１０２ｍ2／ｇ、かつ、平均細孔直径が３．２ｎｍであった。
上記調湿建材とパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２６】
（比較例１）
軽量気泡コンクリートを粉砕した粉体１００重量部に対して、繊維材として１ｍｍ長のアクリル短繊維７重量部と、顔料として無機顔料０．３重量部とを加えて均一となるように混合する。
そして、その混合粉体をプレス機で加圧成形して板状とした後、炭酸ガスで炭酸硬化反応させて、炭酸化率が８０％以上となった炭酸カルシウム−シリカ系の調湿建材を得る。
次に、この調湿建材を粉砕した粉体１００重量部に対して、シリコーン系バインダー１００重量部を加えて均一となるように混合して、調湿建材用パテ材を生成した。
この調湿建材とパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２７】
（比較例２）
軽量気泡コンクリートを粉砕した粉体を、炭酸化によりその炭酸化率が８０％以上とした炭酸カルシウム−シリカ系粉体を製造する。
この粉体１００重量部に対して、繊維材として１ｍｍ長のポリプロピレン短繊維６重量部、変性シリコーン系バインダー７０重量部、そして顔料として酸化鉄０．０２重量部を加えて、均一に拡散するように混合して調湿建材用パテ材を生成した。
このパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２８】
（比較例３）
軽量気泡コンクリートを粉砕した粉体を、炭酸化によりその炭酸化率が８０％以上とした炭酸カルシウム−シリカ系粉体を製造する。
この粉体１００重量部に対して、繊維材として０．５ｍｍ長のパルプ短繊維８重量部、酢酸ビニル系バインダー１００重量部、そして顔料として無機顔料３．５重量部を加えて、均一に拡散するように混合して調湿建材用パテ材を生成した。
このパテ材を用いて、実施例１と同様に、目地部への充填および切り欠き部への補修をして、１週間後に外観観察をした。
【００２９】
上記実施例および比較例において、その目地部および補修部の観察結果を表１に示す。
なお、表１において、下記状況が観察された場合は、その評価を「×」とした。
▲１▼パテ材表面に０．１ｍｍ以上の亀裂がある。
▲２▼パテ材と調湿建材との境界部分に０．１ｍｍ以上の隙間がある。
▲３▼パテ材が、調湿建材表面から剥離している。
▲４▼乾燥収縮によりパテ材が変形（歪み）している。
▲５▼パテ材と調湿建材との間に質感・肌合いなどの違和感がある。
その結果、実施例１〜６における目地部に充填または補修したパテ材は、すべて表面に０．１ｍｍ以上の亀裂はなく、また、調湿建材との境界部分に０．１ｍｍ以上の隙間は発生していなかった。あわせて、調湿建材とパテ材との境界部分での剥離および違和感は全くなかった。
【００３０】
一方、比較例において目地部に用いたパテ材は、バインダー過多によりその乾燥収縮が大きくなり、調湿建材との境界部分に０．１ｍｍ以上の隙間が発生してたり、表面に０．１ｍｍ以上の亀裂が発生していた。
また、補修に用いた比較例のパテ材は、調湿建材とパテ材との境界部分で隙間・剥離が発生したり、調湿建材の補修された隅部が乾燥収縮により変形したりしていた。
さらに、比較例１、２、３では、バインダーによる光沢がパテ材表面で目立ち、調湿建材表面の質感・肌合いとパテ材との間に違和感が感じられた。
比較例３は、パテ材表面に繊維の毛羽立ちが多く見られて外観上好ましくなかった。
【００３１】
【表１】
【発明の効果】
本発明のパテ材によれば、目地部または補修された部分と調湿建材との境界部分に温度・湿度変化等による隙間の発生および剥離がなくなるとともに、その境界における違和感をなくすことが可能となる。
これにより、調湿建材を用いて室内装飾をするときに、優れた表面仕上げをすることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention is used as a repair material to be filled in a defect portion or the like of a calcium carbonate-silica-based moisture-conditioning building material used in a building such as a house, a warehouse, or an office, or a joint material to be filled in a joint portion between the moisture-conditioning building materials. The present invention relates to a putty material for humidity conditioning building materials.
[0002]
[Prior art]
Humidity control building materials are used as building materials for interiors and have the function of adjusting indoor humidity by absorbing and releasing moisture. Among them, calcium carbonate-silica based humidity control building materials with excellent humidity control performance It has been known. This calcium carbonate-silica moisture-control building material can be obtained by carbonizing and curing a powder body mainly composed of calcium silicate hydrate.
In particular, a humidity control building material (disclosed in JP-A No. 2000-297483) having a specific surface area of 80 to 250 m 2 / g and an average pore diameter of 1.0 to 30 nm by a nitrogen gas adsorption method can be produced. . This moisture conditioning building material not only has a large amount of moisture absorption and desorption, but also has excellent moisture absorption and desorption rate, that is, responsiveness to changes in humidity.
[0003]
In general, this humidity-conditioning building material is fixed to a wall surface or a base material as an interior surface by an adhesive or nailing, and the joint material is filled in the joint portion. In addition, when the humidity control building material is chipped or damaged due to a collision of an object or the like during construction or in a normal life, the repair material is filled in that portion.
[0004]
[Problems to be solved by the invention]
However, while this moisture-conditioning building material is excellent in moisture absorption and desorption performance, it has the following problems.
That is, the external dimensions of the humidity-control building material change depending on the ambient temperature or humidity in order to absorb and release moisture.
Cement, cement mortar, gypsum, resin-based putty, silicon-based sealant and the like are usually used as joint materials and repair materials for humidity-control building materials.
Cement, cement mortar, and plaster joint materials and repair materials may have gaps at the boundary due to differences in the material and shrinkage expansion coefficient between the moisture-conditioning building material that repeatedly absorbs and releases moisture and joint materials and repair materials. Or the repair material was peeled off, or a sense of incongruity was felt. In addition, in joint materials and repair materials made of resin-based putty and silicon-based sealant, a sense of incongruity was felt at the boundary due to the difference in material.
[0005]
In addition, since the humidity control building material is directly fixed to the wall surface or the base material, it is directly affected by dimensional changes due to changes in temperature and humidity of the base material and distortion of the building frame. Therefore, this gap / peeling problem is more likely to occur.
Furthermore, cracks due to expansion and contraction may occur on the surface of the joint material or repair material in a room where temperature and humidity changes are large.
Therefore, the present invention solves the above-mentioned problems, and it is difficult for cracks to occur on the surface, and it is difficult for gaps and separation to occur at the boundary portion with the humidity-control building material, and the humidity-control building material does not feel uncomfortable with the surface of the humidity-control building material. Providing putty materials.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention
A putty material for humidity control building material used as a repair material for calcium carbonate-silica moisture control building materials or a joint material between the humidity control building materials, the putty material being used for 100 parts by weight of calcium carbonate-silica powder. Thus, a putty material for humidity control building material in which 0.1 to 7 parts by weight of a fiber material and 0.2 to 50 parts by weight of a binder are mixed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
In the putty material for humidity control building material of the present invention, 0.1 to 7 parts by weight of a fiber material and 0.2 to 50 parts by weight of a binder are mixed with 100 parts by weight of a calcium carbonate-silica powder. .
[0008]
Since the main raw material of the putty material for humidity control building material of the present invention is composed of calcium carbonate-silica powder, there is almost no difference in material between the putty material and the humidity control building material. As a result, the texture and the texture become equal, and the sense of incongruity at the boundary portion is not felt.
[0009]
The calcium carbonate-silica powder can be obtained by carbonizing a lightweight cellular concrete material, concrete material or mortar material, or powder obtained by pulverizing these waste materials.
Although these concrete materials are alkaline, they become neutral by carbonation, so that the binder and fiber material to be mixed are not deteriorated.
[0010]
Moreover, since 0.2-50 weight part of binder is mixed, since a putty material comes to adhere | attach firmly on the humidity-control building material surface, peeling becomes difficult to generate | occur | produce.
Similarly, in the joint material, since the adhesiveness between the humidity control building material and the joint material is increased, a gap is hardly generated at the boundary portion.
If the amount of the binder to be mixed is too small, the adhesiveness to the humidity control building material will be low, and if it is too large, the shrinkage at the time of curing of the putty material will increase and cause cracks on the surface. The surface may be different in texture and texture.
[0011]
Further, since 0.1 to 7 parts by weight of the fiber material is mixed, it acts as a reinforcing material in the putty material. With this function, it is possible to prevent the occurrence of surface cracks due to drying shrinkage when the putty material is cured or expansion and shrinkage due to daily changes in indoor temperature and humidity.
In addition, when used as a joint material, cracks on the joint material surface and gaps at the boundary with the humidity control building material are generated even if the humidity control building material expands and contracts due to the high adhesiveness with the humidity control building material and the reinforcing action of the fiber material. Can be prevented.
If the amount of the mixed fiber material is too small, cracks are likely to occur, and if the amount is too large, fuzzing is seen on the surface of the putty material, and a feeling of strangeness is felt between the humidity control building material and the putty material. .
[0012]
As the fiber material, organic short fibers such as synthetic fibers such as vinylon, acrylic, polypropylene, and polyethylene, regenerated fibers such as rayon, or semi-synthetic fibers such as acetate are effective as a reinforcing material. Further, natural fibers such as pulp or waste materials thereof can be used.
[0013]
When the humidity control building material and the calcium carbonate-silica powder constituting the putty material are the same substance, the shrinkage expansion coefficient, texture, and texture are equal, so the boundary between the humidity control building material and the putty material is almost conspicuous. This is desirable.
[0014]
Furthermore, the powder of the putty material raw material has a specific surface area of 80 to 250 m 2 / g and an average pore diameter of 1.5 to 30 nm by the nitrogen gas adsorption method, like the powder of the humidity control building material. In addition, a moisture conditioning function with an excellent moisture absorption / release amount is obtained, and the adhesiveness to the binder is greatly increased due to the wide specific surface area and the large pore diameter. Thereby, the adhesive force between the humidity control building material and the putty material becomes larger, and further effects are exhibited in preventing the occurrence of peeling.
The powder of this putty material has the same specific surface area, average pore diameter, and pore size distribution as the powder of the humidity control building material ("Harmonite" manufactured by Klion Co., Ltd.) used in the following examples. However, it is desirable in terms of moisture absorption and release and its responsiveness.
[0015]
As the binder, silicone-based, modified silicone-based, urethane-based, acrylic-based, methylcellulose-based or vinyl acetate-based emulsions can be used.
For joint putty materials that require elasticity, silicone, modified silicone, urethane, and acrylic materials are preferred as binders. Further, since the methylcellulose-based or vinyl acetate-based emulsion is excellent in performance as a binder even in a small amount, the mixing amount can be reduced to 0.2 to 30 parts by weight.
Similarly, seaweed paste, which is a natural material, can be used in a small amount as well.
Thereby, it is possible to further reduce the uncomfortable feeling between the humidity control building material and the putty material.
[0016]
When the putty material of the present invention contains 0.01 to 3 parts by weight of a pigment, the texture and texture of the moisture-conditioning building material can be matched with a more delicate color tone, which is more preferable. The pigment is most preferably an inorganic powder pigment similar to the humidity control building material.
【Example】
Examples of the present invention and comparative examples will be described below.
[0017]
(Example 1)
A calcium carbonate-silica-based powder having a carbonation rate of 80% or more is produced by carbonizing powder obtained by pulverizing lightweight aerated concrete.
To 100 parts by weight of the powder, 1.5 parts by weight of 1 mm-long polypropylene short fibers as a fiber material, 40 parts by weight of a silicone-based binder, and 0.2 parts by weight of an inorganic pigment as a pigment are dispersed uniformly. Thus, the putty material for humidity control building material was produced.
The powder of the putty material had a specific surface area of 110 m 2 / g and an average pore diameter of 4.8 nm.
[0018]
In addition, two humidity control building materials (“Harmonite” length 300 mm × width 300 mm × thickness 8 mm, manufactured by Clion Co., Ltd.) with a joint interval of 3 mm are pasted on the gypsum board in advance with an elastic adhesive. This moisture-conditioning building material is manufactured by press-molding lightweight cellular concrete powder with a press to form a plate, and then by a carbonic acid curing reaction with carbon dioxide gas.
[0019]
The main components of “Harmonite” manufactured by Klion Co., Ltd. used in Example 1 are calcium carbonate and amorphous silica, the specific surface area by the nitrogen gas adsorption method is 115 m 2 / g, and the average pore diameter is 3. The molded product was 2 nm.
The “Harmonite” manufactured by Kryon Co., Ltd. was manufactured so that the properties of the pulverized powder had a specific surface area of 80 to 250 m 2 / g and an average pore diameter of 1.5 to 30.0 nm. It is a building material.
This humidity conditioning building material has pore volume peaks on both sides of the average pore diameter in the pore diameter distribution. And the pore diameter portion smaller than the average value increases the specific surface area to provide a sufficient moisture absorption / release amount, and the pore diameter larger than the average value provides the humidity control building material with quick response to humidity change. .
And the putty material was filled in the joint part of this humidity-control building material.
[0020]
Furthermore, after the humidity control building material, in which one corner of the humidity control building material is cut out into a quadrangle (vertical 20 mm × width 20 mm), is similarly attached to the gypsum board, the cut-out portion is replaced with the putty material. We repaired it to be in shape.
After filling the joints and repairing the notches, the exteriors of the joints and repaired parts were observed after natural drying in the room for one week.
[0021]
(Example 2)
A calcium carbonate-silica-based powder having a carbonation rate of 80% or more is produced by carbonizing powder obtained by pulverizing lightweight aerated concrete.
This powder had a specific surface area of 103 m 2 / g and an average pore diameter of 3.5 nm.
To 100 parts by weight of this powder, 0.1 part by weight of 2 mm long vinylon short fiber as a fiber material, 30 parts by weight of a modified silicone binder, and 0.02 part by weight of iron oxide as a pigment are added to evenly diffuse. It mixed so that the putty material for humidity-control building materials was produced | generated.
The powder of the putty material had a specific surface area of 101 m 2 / g and an average pore diameter of 3.8 nm.
Using this putty material, in the same manner as in Example 1, the filling material for the moisture-conditioning building material ("Harmonite" manufactured by Clion Co., Ltd.) and the repair to the notch portion were observed, and the appearance was observed after one week. .
[0022]
(Example 3)
To 100 parts by weight of powdered lightweight aerated concrete, 0.2 part by weight of vinylon short fiber 2 mm long as a fiber material and 0.01 part by weight of iron oxide as a pigment are added and mixed uniformly. To do.
Then, the mixed powder is press-molded with a press machine into a plate shape, and then subjected to carbonic acid curing reaction with carbon dioxide gas to obtain a calcium carbonate-silica-based humidity-conditioning building material having a carbonation rate of 80% or more. . The properties of the powder obtained by pulverizing the humidity-controlled building material had a specific surface area of 103 m 2 / g and an average pore diameter of 5.3 nm.
Next, 30 parts by weight of a urethane-based binder was added to 100 parts by weight of the powder obtained by pulverizing the humidity-controlling building material, and the resulting mixture was mixed uniformly to produce a putty material for humidity-controlling building material.
The putty material powder had a specific surface area of 97 m 2 / g and an average pore diameter of 4.3 nm.
Using the above-described humidity control building material and putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0023]
Example 4
To 100 parts by weight of the powder obtained by pulverizing lightweight aerated concrete, add 0.5 parts by weight of 4 mm long polypropylene short fibers as a fiber material and 0.5 parts by weight of an inorganic pigment as a pigment and mix them uniformly. .
Then, the mixed powder is press-molded with a press machine to form a plate shape, and then a carbonic acid curing reaction with carbon dioxide gas is performed to obtain a calcium carbonate-silica based humidity control building material having a carbonation rate of 80% or more. obtain.
The properties of the humidity-controlled building material were a specific surface area of 118 m 2 / g and an average pore diameter of 3.0 nm.
Next, 50 parts by weight of an acrylic binder was added to 100 parts by weight of the powder obtained by pulverizing the humidity-controlling building material, and mixed uniformly to produce a putty material for humidity-controlling building material.
The putty material powder had a specific surface area of 114 m 2 / g and an average pore diameter of 3.3 nm.
Using the above-described humidity control building material and putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0024]
(Example 5)
To 100 parts by weight of the powder obtained by pulverizing lightweight aerated concrete, 0.3 parts by weight of acrylic short fibers having a length of 2 mm as a fiber material and 0.8 parts by weight of an inorganic pigment as a pigment are added and mixed uniformly. .
Then, the mixed powder is press-molded with a press machine into a plate shape, and then subjected to carbonic acid curing reaction with carbon dioxide gas to obtain a calcium carbonate-silica-based humidity-conditioning building material having a carbonation rate of 80% or more. . The properties of the humidity control building material were a specific surface area of 121 m 2 / g and an average pore diameter of 3.4 nm.
Next, 0.2 parts by weight of a methylcellulose binder was added to 100 parts by weight of the powder obtained by pulverizing the humidity control building material, and mixed uniformly to produce a putty material for humidity control building material.
The putty material powder had a specific surface area of 114 m 2 / g and an average pore diameter of 3.3 nm.
Using the above-described humidity control building material and putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0025]
(Example 6)
To 100 parts by weight of the powder obtained by pulverizing lightweight aerated concrete, 5 parts by weight of 0.5 mm long pulp short fiber as a fiber material and 1.8 parts by weight of an inorganic pigment as a pigment are added and mixed uniformly. .
Then, the mixed powder is press-molded with a press machine to form a plate shape, and then a carbonic acid curing reaction with carbon dioxide gas is performed to obtain a calcium carbonate-silica based humidity control building material having a carbonation rate of 80% or more. obtain. The properties of the humidity control building material were a specific surface area of 82 m 2 / g and an average pore diameter of 10.3 nm.
Next, 5 parts by weight of a vinyl acetate binder was added to 100 parts by weight of the powder obtained by pulverizing the humidity control building material, and mixed uniformly to produce a putty material for humidity control building material.
The powder of the putty material had a specific surface area of 102 m 2 / g and an average pore diameter of 3.2 nm.
Using the above-described humidity control building material and putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0026]
(Comparative Example 1)
To 100 parts by weight of the powder obtained by pulverizing lightweight aerated concrete, 7 parts by weight of 1 mm long acrylic short fibers as a fiber material and 0.3 parts by weight of an inorganic pigment as a pigment are added and mixed uniformly.
Then, the mixed powder is press-molded with a press machine to form a plate shape, and then a carbonic acid curing reaction with carbon dioxide gas is performed to obtain a calcium carbonate-silica based humidity control building material having a carbonation rate of 80% or more. obtain.
Next, 100 parts by weight of the powder obtained by pulverizing the humidity-controlling building material was mixed with 100 parts by weight of a silicone binder so as to produce a putty material for humidity-controlling building material.
Using this humidity-controllable building material and putty material, as in Example 1, filling the joints and repairing the notches were performed, and appearance was observed after one week.
[0027]
(Comparative Example 2)
A calcium carbonate-silica-based powder having a carbonation rate of 80% or more is produced by carbonizing powder obtained by pulverizing lightweight aerated concrete.
To 100 parts by weight of this powder, 6 parts by weight of 1 mm-long polypropylene short fibers as a fiber material, 70 parts by weight of a modified silicone binder, and 0.02 parts by weight of iron oxide as a pigment are added to uniformly diffuse the powder. And putty material for humidity control building materials.
Using this putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0028]
(Comparative Example 3)
A calcium carbonate-silica-based powder having a carbonation rate of 80% or more is produced by carbonizing powder obtained by pulverizing lightweight aerated concrete.
To 100 parts by weight of this powder, add 8 parts by weight of 0.5 mm short pulp fibers as a fiber material, 100 parts by weight of vinyl acetate binder, and 3.5 parts by weight of inorganic pigment as a pigment, and diffuse evenly. It mixed so that the putty material for humidity-control building materials was produced | generated.
Using this putty material, filling the joints and repairing the cutouts were performed in the same manner as in Example 1, and the appearance was observed after one week.
[0029]
Table 1 shows the observation results of the joints and repaired parts in the above examples and comparative examples.
In Table 1, when the following situation was observed, the evaluation was “x”.
(1) There is a crack of 0.1 mm or more on the surface of the putty material.
(2) There is a gap of 0.1 mm or more at the boundary between the putty material and the humidity control building material.
(3) The putty material is peeled off from the surface of the humidity control building material.
(4) The putty material is deformed (distorted) due to drying shrinkage.
(5) There is a sense of incongruity between the putty material and the humidity control building material, such as texture and texture.
As a result, all putty materials filled or repaired in the joints in Examples 1 to 6 have no cracks of 0.1 mm or more on the surface, and a gap of 0.1 mm or more is generated at the boundary portion with the humidity control building material. I did not. In addition, there was no separation or discomfort at the boundary between the humidity control building material and the putty material.
[0030]
On the other hand, the putty material used for the joint part in the comparative example has a large drying shrinkage due to excessive binder, and a gap of 0.1 mm or more is generated at the boundary portion with the humidity control building material, or 0.1 mm or more on the surface. Cracks were occurring.
In addition, in the putty material of the comparative example used for repair, gaps / peeling occurred at the boundary between the humidity control building material and the putty material, or the repaired corner of the humidity control building material was deformed due to drying shrinkage. It was.
Further, in Comparative Examples 1, 2, and 3, gloss due to the binder was conspicuous on the surface of the putty material, and a sense of incongruity was felt between the texture / texture on the surface of the humidity control building material and the putty material.
Comparative Example 3 was unfavorable in appearance because a lot of fiber fluff was observed on the surface of the putty material.
[0031]
[Table 1]
【The invention's effect】
According to the putty material of the present invention, it is possible to eliminate the generation and separation of gaps due to temperature / humidity changes in the joint portion or the boundary portion between the repaired portion and the humidity control building material, and to eliminate the sense of incongruity at the boundary. Become.
Thereby, when performing interior decoration using a humidity control building material, it is possible to achieve an excellent surface finish.
Claims (4)
前記パテ材は炭酸カルシウム−シリカ系の粉体１００重量部に対して、繊維材０．１〜７重量部とバインダー０．２〜５０重量部とが混合されていることを特徴とする調湿建材用パテ材。A putty material for humidity control building material used as a repair material to be filled in a defect or the like of a calcium carbonate-silica type humidity control building material or a joint material to be filled in a joint part between the humidity control building materials,
The putty material is a humidity control characterized in that 0.1 to 7 parts by weight of a fiber material and 0.2 to 50 parts by weight of a binder are mixed with 100 parts by weight of calcium carbonate-silica powder. Putty material for building materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002162971A JP4155443B2 (en) | 2002-06-04 | 2002-06-04 | Putty material for humidity control building materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002162971A JP4155443B2 (en) | 2002-06-04 | 2002-06-04 | Putty material for humidity control building materials |
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| Publication Number | Publication Date |
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| JP2004010378A JP2004010378A (en) | 2004-01-15 |
| JP4155443B2 true JP4155443B2 (en) | 2008-09-24 |
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| JP2016211168A (en) * | 2015-04-30 | 2016-12-15 | 理想科学工業株式会社 | Repair material set and repair method for humidity-conditioning substrate |
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| JP2017096034A (en) * | 2015-11-27 | 2017-06-01 | 株式会社プロホーム・大台 | Wet paint wall material and wet paint wall method |
| KR101963828B1 (en) * | 2018-09-19 | 2019-03-29 | 조성록 | Composite coating putty composition for repairing crack in concrete structure |
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2002
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