JPS6311147B2 - - Google Patents
Info
- Publication number
- JPS6311147B2 JPS6311147B2 JP15387479A JP15387479A JPS6311147B2 JP S6311147 B2 JPS6311147 B2 JP S6311147B2 JP 15387479 A JP15387479 A JP 15387479A JP 15387479 A JP15387479 A JP 15387479A JP S6311147 B2 JPS6311147 B2 JP S6311147B2
- Authority
- JP
- Japan
- Prior art keywords
- fluororesin
- heat
- metal surface
- primer
- adhesive layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 25
- 239000012790 adhesive layer Substances 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002987 primer (paints) Substances 0.000 description 26
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 description 17
- 230000001070 adhesive effect Effects 0.000 description 14
- 239000000853 adhesive Substances 0.000 description 13
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 239000011737 fluorine Substances 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- -1 perfluoroalkyl vinyl ether Chemical compound 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920006015 heat resistant resin Polymers 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- AUHGVWAQTAXJNE-UHFFFAOYSA-N naphthalene;oxolane Chemical compound C1CCOC1.C1=CC=CC2=CC=CC=C21 AUHGVWAQTAXJNE-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000013615 primer Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
本発明は金属面にふつ素樹脂を被覆する方法に
係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of coating a metal surface with a fluororesin.
ふつ素樹脂は耐化学薬品性，耐熱性，非粘着性
など優れた特性を有しているので、この特性を利
用し高温・腐食性流体の配管類あるいはフイテイ
ング類などのライニング材として広く利用されて
いる。しかし、この反面、非粘着性であることに
基因して金属面との接着力が極めて弱い。ふつ素
系の共重合体樹脂である熱溶融性ふつ素樹脂（ふ
つ素樹脂共重合体）、例えばテトラフロロエチレ
ンとパーフロロアルキルビニルエーテルとの共重
合体、テトラフロロエチレンとヘキサフロロプロ
ピレンとの共重合体等は融点以上にあつては流動
性をおびて金属等に接着するが、その接着力は極
めて弱く実用に供さなかつた。この為、従来、ふ
つ素樹脂と金属面との唯一の実用的な接着方法と
しては、ふつ素樹脂の表面を金属ナトリウムの液
体アンモニウム溶液あるいは金属ナトリウムのナ
フタリンテトラヒドロフラン溶液で処理してふつ
素樹脂表面を活性化せしめることによつて接着性
を付与し、この表面処理面あるいは金属面に耐熱
性接着剤を塗布し、適当の押圧下のもとで接着し
ている。 Fluorine resin has excellent properties such as chemical resistance, heat resistance, and non-adhesion, so it is widely used as a lining material for piping and fittings for handling high-temperature and corrosive fluids. ing. However, on the other hand, because it is non-adhesive, its adhesive strength with metal surfaces is extremely weak. Heat-melting fluororesins (fluororesin copolymers), which are fluorine-based copolymer resins, such as copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ether, copolymers of tetrafluoroethylene and hexafluoropropylene, etc. Polymers and the like exhibit fluidity when the temperature is above their melting point and adhere to metals, etc., but their adhesive strength is so weak that they cannot be put to practical use. For this reason, conventionally, the only practical way to bond fluororesin and metal surfaces is to treat the surface of fluororesin with a liquid ammonium solution containing metallic sodium or a naphthalene-tetrahydrofuran solution containing metallic sodium. Adhesive properties are imparted by activating the heat-resistant adhesive, and a heat-resistant adhesive is applied to this surface-treated surface or metal surface, and the adhesive is bonded under appropriate pressure.
しかし、この方法はふつ素樹脂の耐熱性を十分
に生かしていない。すなわち、最も一般的に使用
されている耐熱性接着剤であつても100℃迄の使
用温度では接着剤としての効果を保持し得るが、
それ以上の高温では接着剤自身が熱劣化してしま
い、ふつ素樹脂と金属面との接着力は極度に低下
する。この為、ふつ素樹脂の使用温度範囲が接着
剤の耐熱温度に限定されてしまうという欠点が生
じる。 However, this method does not take full advantage of the heat resistance of fluororesin. In other words, even the most commonly used heat-resistant adhesives can maintain their effectiveness as adhesives at operating temperatures of up to 100°C.
At higher temperatures, the adhesive itself will deteriorate due to heat, and the adhesive strength between the fluororesin and the metal surface will be extremely reduced. For this reason, there arises a disadvantage that the operating temperature range of the fluororesin is limited to the heat-resistant temperature of the adhesive.
以上のようにふつ素樹脂と金属との接着は、た
とえできたとしても接着力が弱く実用に供さなか
つたり、接着剤の耐熱範囲に限定され、ふつ素樹
脂の特性を十分いかせなかつた。 As described above, even if it were possible to bond fluorine resins with metals, the adhesive force would be too weak to put it into practical use, or the heat resistance range of the adhesive would be limited, and the properties of the fluorine resins would not be fully utilized.
そこで、本発明は金属表面にふつ素樹脂のプラ
イマーを塗布し、そのプライマー層上に熱溶融性
ふつ素樹脂の粉末またはフイルムを付着し、これ
を熱溶融性ふつ素樹脂の分解温度以上に加熱して
金属表面に接着層を形成し、ついでこの接着層に
ふつ素樹脂を溶融被着することによつて、金属表
面にふつ素樹脂を強固に被覆するとともに高温に
おいてもふつ素樹脂の被覆体が剥離しない特性を
有する金属面に四ふつ化エチレン樹脂を被覆する
方法を提供するものである。次に具体的に本発明
を説明する。 Therefore, in the present invention, a fluororesin primer is applied to the metal surface, a heat-melting fluororesin powder or film is adhered to the primer layer, and this is heated to a temperature higher than the decomposition temperature of the heat-melting fluororesin. By forming an adhesive layer on the metal surface and then melting and adhering the fluororesin to this adhesive layer, the fluororesin can be firmly coated on the metal surface and the fluororesin coating can be applied even at high temperatures. The present invention provides a method for coating a metal surface with a tetrafluoroethylene resin that does not peel off. Next, the present invention will be specifically explained.
第１工程では、金属表面にふつ素樹脂のプライ
マーを塗布する。ここで金属表面とは高温・腐食
性流体など苛酷な使用条件で使用される配管，機
器装置等の金属表面でこれにふつ素樹脂のプライ
マーを塗布するものである。 In the first step, a fluororesin primer is applied to the metal surface. Here, the metal surface refers to the metal surface of piping, equipment, etc. that is used under harsh operating conditions such as high temperatures and corrosive fluids, and is coated with a fluororesin primer.
ふつ素樹脂のプライマーはポリテトラフロロエ
チレン（以下PTFEという），テトラフロロエチ
レンとパーフロロアルキルビニルエーテルとの共
重合体（以下PFAという），テトラフロロエチレ
ンとヘキサフロロプロピレンとの共重合体（以下
FEPという），ポリクロロトリフロロエチレン，
ポリビニリデンクロライドなどから選択されたふ
つ素樹脂粉末と、ポリフエニレンサルフアイド，
ポリイミド，ポリアミドイミド，エポキシ樹脂，
シリコーン樹脂、フエノール樹脂などから選択さ
れた耐熱性樹脂を混入した水溶媒系のプライマー
または上記耐熱性樹脂の有機溶液中に上記ふつ素
樹脂粉末を混入した有機溶媒系のプライマーを用
いる。これらの水溶媒系のプライマー及び有機溶
媒系のプライマーにはリン酸，リン酸塩，カツプ
リング剤，キレート剤を添加することが好まし
い。 Primers for fluorine resins include polytetrafluoroethylene (hereinafter referred to as PTFE), a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether (hereinafter referred to as PFA), and a copolymer of tetrafluoroethylene and hexafluoropropylene (hereinafter referred to as PFA).
FEP), polychlorotrifluoroethylene,
Fluorine resin powder selected from polyvinylidene chloride, polyphenylene sulfide, etc.
Polyimide, polyamideimide, epoxy resin,
A water-based primer containing a heat-resistant resin selected from silicone resins, phenolic resins, etc., or an organic solvent-based primer containing the above-mentioned fluororesin powder mixed into an organic solution of the above-mentioned heat-resistant resin is used. It is preferable to add phosphoric acid, a phosphate, a coupling agent, or a chelating agent to these water-based primers and organic solvent-based primers.
第２工程では前記塗布されたプライマー層上に
熱溶融性ふつ素樹脂の粉末を散布付着するかまた
は熱溶融性ふつ素樹脂のフイルムを付着する。こ
こで使用する熱溶融性ふつ素樹脂には、融点以上
に加熱すると流動性を呈す前記第１工程で示した
PFA，FEP等の粉末（粒径25〜1000μ）またはそ
のフイルムであり、その粉末は複雑な形状の金属
面に、フイルムは金属板体に適用する。プライマ
ー中のふつ素樹脂がPTFE粉末であるときは、こ
こで付着する熱溶融性ふつ素樹脂はPFA粉末が
好ましい。しかし熱可塑性ふつ素樹脂である
PTFEは、その融点以上の温度に加熱しても流動
性を呈さないので、本発明に適さない。なおプラ
イマー層が乾燥固化しないうちに熱溶融性ふつ素
樹脂の粉末を散布するとこの粉末がよく付着す
る。この場合プライマーは有機溶媒系より水溶媒
系の方が乾燥が遅いので作業し易い。プライマー
が乾燥固化しないうちに熱溶融性ふつ素樹脂の粉
末を散布付着するとその粉末の毛細管現象によつ
てプライマーの塗布層上に均一に粉末が付着して
プライマーの塗布厚さを厳密に調整する必要がな
くなりまた次工程の接着層の厚さもプライマーの
塗布厚さに左右されない。 In the second step, powder of a heat-melting fluororesin is scattered or adhered on the coated primer layer, or a film of a heat-melting fluororesin is attached. The heat-melting fluororesin used here has the properties shown in the first step that exhibits fluidity when heated above its melting point.
PFA, FEP, etc. powder (particle size 25-1000μ) or its film.The powder is applied to metal surfaces with complex shapes, and the film is applied to metal plates. When the fluororesin in the primer is PTFE powder, the heat-melting fluororesin adhered here is preferably PFA powder. However, it is a thermoplastic fluororesin.
PTFE is not suitable for the present invention because it does not exhibit fluidity even when heated to a temperature above its melting point. Note that if powder of heat-melting fluororesin is sprinkled on the primer layer before it dries and solidifies, this powder will adhere well. In this case, it is easier to work with an aqueous solvent-based primer because it dries more slowly than an organic solvent-based primer. If heat-melting fluororesin powder is applied before the primer dries and solidifies, the capillary action of the powder will cause the powder to adhere uniformly to the primer coating layer, allowing precise adjustment of the primer coating thickness. There is no need for this, and the thickness of the adhesive layer in the next step is not affected by the thickness of the primer coating.
第３工程では前記プライマーに付着した熱溶融
性ふつ素樹脂の粉末またはフイルムを電気炉で
360〜400℃に加熱分解して金属表面にプライマー
と熱溶融性ふつ素樹脂による接着層を形成する。
金属表面に形成された接着層は焼結された状態で
金属表面に強固に接合している。 In the third step, the heat-melting fluororesin powder or film attached to the primer is heated in an electric furnace.
It is thermally decomposed at 360-400°C to form an adhesive layer made of primer and heat-melting fluororesin on the metal surface.
The adhesive layer formed on the metal surface is firmly bonded to the metal surface in a sintered state.
第４工程では前記金属表面の接着層にふつ素樹
脂を溶融被着して本発明を完成する。 In the fourth step, the present invention is completed by melting and depositing a fluororesin on the adhesive layer on the metal surface.
接着対象物であるふつ素樹脂はPTFE，PFA，
FEP等前記の材料である。PTFEの場合には、焼
成されたPTFE成形品あるいは未焼成のPTFE成
形品（予備成形品）を金属表面の接着層にあてが
いPTFEの融点327℃以上に加熱して接着層を介
して金属表面に接合する。PFAの場合には、
PFAは融点305℃に加熱すると流動性を呈すので
PFAの加熱流動体を加熱状態の金属表面の接着
層に流し込みPFAの被膜を形成（トランスフア
モールド）するかあるいはPFAのフイルムを接
着層に重ね合せて加熱接合してもよい。FEPの
場にはPFAと同様にFEPの融点280℃以上に加熱
して接合する。接着時の加圧は必要としないが接
着対象物がPTFEの場合は多少（１Kg／cm2）の押
圧をかけることが好ましい。 The fluororesin to be bonded is PTFE, PFA,
The above-mentioned materials such as FEP. In the case of PTFE, a fired PTFE molded product or an unfired PTFE molded product (preformed product) is applied to the adhesive layer on the metal surface, heated to the melting point of PTFE of 327°C or higher, and then attached to the metal surface through the adhesive layer. Join. In the case of PFA,
PFA becomes fluid when heated to its melting point of 305℃.
A heated PFA fluid may be poured into the adhesive layer on the heated metal surface to form a PFA film (transform molding), or a PFA film may be placed on the adhesive layer and bonded by heat. For FEP, bonding is performed by heating the melting point of FEP to 280°C or higher, similar to PFA. Pressure is not required during bonding, but if the object to be bonded is PTFE, it is preferable to apply some pressure (1 kg/cm 2 ).
本発明によれば金属表面にふつ素樹脂のプライ
マーを塗布し、このプライマー層上に熱溶融性ふ
つ素樹脂の粉末またはフイルムを付着し、これを
熱溶融性ふつ素樹脂の分解温度以上に加熱して金
属表面に接着層を形成してあるから、ふつ素樹脂
のプライマーによつて金属表面をエツチングし金
属表面に強固に接合した接着層が得られる。そし
て、この接着層を介してふつ素樹脂を加熱溶融被
着するものであるから接着層の一部を形成する熱
溶融性ふつ素樹脂と溶融接着して金属表面に接着
対象物のふつ素樹脂が強固に接合する。また接着
層はふつ素樹脂のプライマー及び熱溶融性ふつ素
樹脂から構成されているので耐熱性に優れ、高温
においても金属面からふつ素樹脂の被覆が剥離す
るようなことがない。 According to the present invention, a fluororesin primer is applied to the metal surface, a heat-melting fluororesin powder or film is adhered to the primer layer, and this is heated to a temperature higher than the decomposition temperature of the heat-fusible fluororesin. Since the adhesive layer is formed on the metal surface by etching the metal surface with a fluororesin primer, an adhesive layer firmly bonded to the metal surface can be obtained. Since the fluororesin is heat-melted and adhered via this adhesive layer, the fluororesin of the object to be bonded is melt-bonded to the heat-meltable fluororesin that forms part of the adhesive layer and attached to the metal surface. are strongly bonded. Furthermore, since the adhesive layer is composed of a fluororesin primer and a heat-melting fluororesin, it has excellent heat resistance, and the fluororesin coating will not peel off from the metal surface even at high temperatures.
発明の完成過程においては、金属表面にPFA
粉末またはフイルムを載置し、PFAの分解温度
以上に加熱してPTFE板を加熱接合したが、その
接合強度は極めて弱く室温中での剥離強度が１〜
２Kg／cmが最大であつて不満足なものであつた。
また金属表面にふつ素樹脂のプライマーを塗布
し、これを加熱分解してPTFE板を加熱接合した
がこの接合には大きな圧力が必要である上、塗膜
厚さに制限があり厚膜の調整が困難である。この
塗膜の厚さが大きくなると火ぶくれを生じそのた
めに安定した剥離強度が得られにくく再現性に乏
しい欠陥があつた。 In the process of completing the invention, PFA is applied to the metal surface.
Powder or film was placed and the PTFE plates were heat bonded by heating above the decomposition temperature of PFA, but the bonding strength was extremely weak and the peel strength at room temperature was 1~1.
The maximum value was 2 kg/cm, which was unsatisfactory.
In addition, a fluorine resin primer was applied to the metal surface, and this was decomposed by heat to heat-bond the PTFE plate, but this bonding required a large amount of pressure and there was a limit to the thickness of the coating, so the thickness could be adjusted. is difficult. When the thickness of this coating film became large, blistering occurred, making it difficult to obtain stable peel strength and causing defects with poor reproducibility.
本発明においてはふつ素樹脂のプライマーと熱
溶融性ふつ素樹脂を組み合せ、しかも分解温度に
加熱する手段によつて従来想定し得ない接合力を
有する接着層を形成することができ、そしてこの
接着層を介して金属面にふつ素樹脂を加熱溶融接
合することによつて剥離強度９〜10Kg／cmを得る
ことができた。 In the present invention, by combining a fluororesin primer and a heat-melting fluororesin, and by heating it to a decomposition temperature, it is possible to form an adhesive layer with bonding strength that was previously unimaginable. A peel strength of 9 to 10 kg/cm could be obtained by heat-melting and bonding the fluororesin to the metal surface via a layer.
実施例 １
ステンレス平板（SUS304）の表面をグライン
ダーによつてみがき、ベンジンで脱脂して清浄し
た。このステンレス平板にエポキシ樹脂とカツプ
リング剤を混入したPTFEデイスパージヨンをガ
ラスのはけにて塗布し、未だ乾燥せぬうちに
PFA粉末を散布付着し、その後これを電気炉に
入れ390℃，20分間加熱分解処理を施してステン
レス平板の表面に接着層を形成した。Example 1 The surface of a flat stainless steel plate (SUS304) was polished using a grinder and degreased and cleaned using benzine. Apply PTFE dispersion mixed with epoxy resin and coupling agent to this stainless steel plate using a glass brush, and wait until it dries.
PFA powder was spread and adhered, and then placed in an electric furnace and subjected to thermal decomposition treatment at 390°C for 20 minutes to form an adhesive layer on the surface of the stainless steel plate.
このステンレス平板を電気炉から取りだし水に
て急冷し、接着層の上にPFAシート（厚さ2.3mm）
を重置して電気炉中で350℃，20分間加熱してス
テンレス平板の接着層にPFAの被覆層にPFAの
被覆層を形成した。これにて得られたステンレス
板とPFAの剥離強度は10Kg／cmであつた。 This stainless steel flat plate was taken out of the electric furnace, quenched with water, and a PFA sheet (2.3 mm thick) was placed on top of the adhesive layer.
were placed one on top of the other and heated in an electric furnace at 350°C for 20 minutes to form a PFA coating layer on the adhesive layer of the stainless steel flat plate. The peel strength between the stainless steel plate and PFA thus obtained was 10 kg/cm.
実施例 ２
SS41平板の表面をみがきベンジンで脱脂しこ
れを380℃の電気炉中で焼いて表面に青色の酸化
鉄の皮膜を形成した。このSS41平板にポリフエ
ニレンサルフアイドとリン酸を混入したPTFEデ
イスパージヨンをはけにて塗布し、この塗布面に
PFAフイルムを載置しこれを電気炉に入れ380
℃，30分加熱分解処理を施してこの平板の表面に
接着層を形成した。Example 2 The surface of an SS41 flat plate was polished and degreased with benzine, and then baked in an electric furnace at 380°C to form a blue iron oxide film on the surface. PTFE dispersion mixed with polyphenylene sulfide and phosphoric acid is applied to this SS41 flat plate with a brush, and the coated surface is
Place the PFA film and place it in an electric furnace at 380°C.
An adhesive layer was formed on the surface of this flat plate by thermal decomposition treatment at ℃ for 30 minutes.
この平板を電気炉から取り出し冷却後、接着層
の上に予備成形したPTFE板を載置し治具にて１
Kg／cm2の加圧固定し電気炉中で380℃，20分間加
熱してSS41平板の接着層にPTFEの被覆層を形
成した。これにて得られたSS41板とPTFEとの
剥離強度は10Kg／cmであつた。 After taking out this flat plate from the electric furnace and cooling it, place the preformed PTFE plate on top of the adhesive layer and use a jig to
A PTFE coating layer was formed on the adhesive layer of the SS41 flat plate by fixing it under a pressure of Kg/cm 2 and heating it at 380°C for 20 minutes in an electric furnace. The peel strength between the SS41 plate and PTFE thus obtained was 10 kg/cm.
Claims (1)
し、そのプライマー層上に熱溶融性ふつ素樹脂の
粉末またはフイルムを付着し、これを熱溶融性ふ
つ素樹脂の分解温度380℃以上に加熱して金属表
面に接着層を形成し、ついでこの接着層にふつ素
樹脂を溶融被着することを特徴とする金属面にふ
つ素樹脂を被覆する方法。1. Apply a fluororesin primer to the metal surface, attach a heat-melting fluororesin powder or film on the primer layer, and heat it to the decomposition temperature of the heat-melter fluororesin, 380°C or higher. A method for coating a metal surface with a fluororesin, which comprises forming an adhesive layer on the metal surface and then melting and applying the fluororesin to the adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15387479A JPS5677142A (en) | 1979-11-28 | 1979-11-28 | Method of coating metallic surface with fluorine resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15387479A JPS5677142A (en) | 1979-11-28 | 1979-11-28 | Method of coating metallic surface with fluorine resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5677142A JPS5677142A (en) | 1981-06-25 |
| JPS6311147B2 true JPS6311147B2 (en) | 1988-03-11 |
Family
ID=15571991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15387479A Granted JPS5677142A (en) | 1979-11-28 | 1979-11-28 | Method of coating metallic surface with fluorine resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5677142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011935A1 (en) * | 1991-12-11 | 1993-06-24 | Kawatetsu Galvanizing Co., Ltd. | Resin coated steel plate |
| JPH08208931A (en) * | 1995-02-02 | 1996-08-13 | Tokyo Gas Furoro Material Kk | Production of steel sheet laminated with patterned fluororesin film |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214973A (en) * | 1985-07-11 | 1987-01-23 | Nippon Valqua Ind Ltd | Method for forming fluorocarbon resin layer to metal surface |
| JP2577389B2 (en) * | 1987-07-16 | 1997-01-29 | 日本バルカ−工業株式会社 | How to use fluororesin laminate |
| US5256747A (en) * | 1991-05-20 | 1993-10-26 | Leo Ojakaar | Soluble perfluoroelastomers |
| JP2746568B2 (en) * | 1996-07-15 | 1998-05-06 | 日本バルカー工業株式会社 | Fluororesin laminate |
| TWI260269B (en) * | 2002-02-12 | 2006-08-21 | Daikin Ind Ltd | ETFE-lining member |
| KR100674521B1 (en) * | 2002-11-07 | 2007-01-29 | 다이킨 고교 가부시키가이샤 | Method for forming fluorine-containing laminate, and coated article |
| JP4652933B2 (en) * | 2005-09-06 | 2011-03-16 | Ｊｆｅ鋼板株式会社 | Fluororesin-coated steel sheet and method for producing the same |
| KR101369624B1 (en) * | 2009-10-22 | 2014-03-05 | 다이킨 고교 가부시키가이샤 | Method for producing coated article, and coated article |
| KR101585356B1 (en) * | 2011-10-18 | 2016-01-13 | 다이킨 고교 가부시키가이샤 | Fluororesin laminate and method for manufacturing same |
-
1979
- 1979-11-28 JP JP15387479A patent/JPS5677142A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011935A1 (en) * | 1991-12-11 | 1993-06-24 | Kawatetsu Galvanizing Co., Ltd. | Resin coated steel plate |
| JPH08208931A (en) * | 1995-02-02 | 1996-08-13 | Tokyo Gas Furoro Material Kk | Production of steel sheet laminated with patterned fluororesin film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5677142A (en) | 1981-06-25 |
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