JPH03207473A - Coating method for fluoroplastic - Google Patents
Coating method for fluoroplasticInfo
- Publication number
- JPH03207473A JPH03207473A JP34339389A JP34339389A JPH03207473A JP H03207473 A JPH03207473 A JP H03207473A JP 34339389 A JP34339389 A JP 34339389A JP 34339389 A JP34339389 A JP 34339389A JP H03207473 A JPH03207473 A JP H03207473A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- fluororesin
- aluminum
- dispersion
- coating
- 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.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 229920002313 fluoropolymer Polymers 0.000 title abstract 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 6
- 239000010445 mica Substances 0.000 claims abstract description 6
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000004094 surface-active agent Substances 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 239000004962 Polyamide-imide Substances 0.000 claims description 7
- 229920002312 polyamide-imide Polymers 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011347 resin Substances 0.000 abstract description 28
- 229920005989 resin Polymers 0.000 abstract description 28
- 239000011248 coating agent Substances 0.000 abstract description 17
- 238000005530 etching Methods 0.000 abstract description 11
- 238000001035 drying Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005245 sintering Methods 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- 241000209094 Oryza Species 0.000 description 11
- 235000007164 Oryza sativa Nutrition 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 235000009566 rice Nutrition 0.000 description 11
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000005253 cladding Methods 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 240000001980 Cucurbita pepo Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- GIXWDMTZECRIJT-UHFFFAOYSA-N aurintricarboxylic acid Chemical compound C1=CC(=O)C(C(=O)O)=CC1=C(C=1C=C(C(O)=CC=1)C(O)=O)C1=CC=C(O)C(C(O)=O)=C1 GIXWDMTZECRIJT-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「星業上の利用分野」
本発明は、ジャー炊飯器、保温ジャー 炊飯器、もちつ
き器等の弗素樹脂被覆法に関するものであり、特にその
中でもアルミニウムとステンレスのクラッド材を用いた
電磁誘導加熱式飯器の内釜の弗素樹脂被覆法に関するも
のである。[Detailed description of the invention] "Field of industrial application" The present invention relates to a method of coating fluororesin on jar rice cookers, heat-retaining jars, rice cookers, rice cake makers, etc., and in particular, on fluororesin coating methods for cladding materials made of aluminum and stainless steel. This invention relates to a method for coating the inner pot of an electromagnetic induction heating rice cooker using fluororesin.
「従来の技術」
この種板器内釜分野の従来技術としては主に次の技術が
ある。"Prior Art" The following are the main conventional technologies in the field of seed plate inner pots.
■ アルミニクムまたはアルミニウム合金とステンレス
のクラッド材のアルミニクム筐たはアルミニウム合金の
表面をエツチングした後、これにピ二アーな四弗化エチ
レン樹脂ディスパージョンを塗布し、乾燥し、焼付けし
さらにプレス戊形によって飯器内釜を得る技術。■ After etching the surface of the aluminum casing or aluminum alloy, which is a cladding material of aluminum or aluminum alloy and stainless steel, a pinear tetrafluoroethylene resin dispersion is applied to it, dried, baked, and then pressed. The technique of obtaining a rice pot inner pot.
■ アルミニクム壕たはアルミニクム合金とステンレス
のクラッド材のアルミニクムまたはアルミニウム合金が
内側になる様プレス或形し、アルミニクム面をプラステ
ィングした後、これにプライマーを塗布しさらに顔料、
マイカ等充填剤を含む四弗化エチレン樹脂をスプレー塗
布し、焼き付けることによって飯器内釜を得る技術。■ After pressing or shaping the aluminum groove or aluminum alloy and stainless steel cladding material so that the aluminum or aluminum alloy is on the inside, and plasting the aluminum surface, a primer is applied to this, and then pigment,
A technique to obtain an inner rice pot by spraying and baking tetrafluoroethylene resin containing fillers such as mica.
■ その他ポリアリレンサルファイド樹脂、ボリアミド
イミド樹脂および／筐たはポリイミド樹脂、ならびに弗
素樹脂の少なくとも３戊分を液体媒体中に分散させた弗
素樹脂被覆用組戊物を金属基材に塗布し、乾燥後３４０
〜４００℃の温度で焼戊することにより接着塗膜を得る
技術（特公昭６０−２１１９３号）。■ A fluororesin coating composition in which at least three parts of polyarylene sulfide resin, polyamideimide resin and/or polyimide resin, and fluororesin are dispersed in a liquid medium is applied to the metal substrate and dried. 340 after
A technique for obtaining an adhesive coating film by baking at a temperature of ~400°C (Japanese Patent Publication No. 60-21193).
「発明が解決しようとする課題」
しかし乍ら上記の様な従来技術では以下の様な問題点が
ある。"Problems to be Solved by the Invention" However, the above-mentioned conventional techniques have the following problems.
■ エツチング性の悪いアルミニウム材では、エツチン
グ面に深いビットが多数発生し、これに従来の技術でピ
ュアーな四弗化エチレン樹脂ディスバージョンを塗布し
乾燥し、焼付けた場合、ビット部周辺の樹脂厚が小さく
なりビンホールが発生し易い。■ With aluminum materials that have poor etching properties, many deep bits occur on the etching surface. becomes smaller and bottle holes are more likely to occur.
このためアルミニクムの調質度の制御、合金添加元素の
調整等により均一なエツチング面を得るためにはその表
面状態を高度に制御する必要があり、このためコストア
ップとなったリオた限られた成分のものしか使えないと
いう問題があった。For this reason, it is necessary to highly control the surface condition in order to obtain a uniform etched surface by controlling the degree of heat refining of aluminum and adjusting the alloying elements. There was a problem that only the ingredients could be used.
特に電磁加熱式炊飯ジャーについてはアルミニクムと磁
性ステンレスとのクラッド材が使われ、この場合には特
にアルミニクム表面のエツチング性がクラッド工程によ
って悪くなり、これをその１ま従来の技術でエツチング
するとエツチング面にビットが発生し、樹脂面にビンホ
ールが発生し易く、その結果耐食性が実用上不充分であ
る。In particular, for electromagnetic heating rice cookers, a cladding material of aluminum and magnetic stainless steel is used, and in this case, the etching properties of the aluminum surface are particularly deteriorated by the cladding process. Bits are likely to occur on the surface of the resin, and holes are likely to occur on the resin surface, resulting in practically insufficient corrosion resistance.
■ ポリテトラフルオロエチレン（ＰＴＦＥ）、あるい
はエチレンーテトラフルオロエチレン共重合体（ＥＴＦ
Ｅ）は柔かい樹脂でかつ透明ないし半透明なものである
ため飯器使用中の蒸気等の浸透によるアルミニクムの変
色が目立つ。■ Polytetrafluoroethylene (PTFE) or ethylene-tetrafluoroethylene copolymer (ETF)
Since E) is a soft resin and is transparent or semi-transparent, discoloration of the aluminum due to penetration of steam etc. during use of the rice cooker is noticeable.
■ プレス品にスプレーコートする場合、塗布むらが発
生し易く、その部分にビンホールが発生し耐食性に重大
な欠陥を及ぼす。■ When spray-coating pressed products, uneven coating tends to occur, and bottle holes occur in those areas, causing serious defects in corrosion resistance.
■ クラッド材の様にエツチング性の悪い材料では塗布
した樹脂の密着力が低下する。その結果耐食性が低下す
る。特に樹脂面にビンホールが存在する場合は密着力が
不充分であれば、アルミニウムの宵食により塗膜面が剥
離し易く実用上の問題がある。■ Materials with poor etching properties, such as cladding materials, reduce the adhesion of the applied resin. As a result, corrosion resistance decreases. Particularly when there are holes in the resin surface, if the adhesion is insufficient, the coating surface is likely to peel off due to aluminum corrosion, which poses a practical problem.
なふ・前記持公＠６０−２１１９３号は強固な接着塗膜
を得ることを目的としているが、塗膜の伸びに問題があ
る。Nafu: The above-mentioned Jiko@60-21193 is aimed at obtaining a strong adhesive coating, but there is a problem with the elongation of the coating.
上記に鑑み、本発明はこの様な間匣点を解決するため開
発されたものである。In view of the above, the present invention has been developed to solve these problems.
「課題を解決するための手段」
即ち本発明は、アルミニクム１たはアルミニクム合金と
ステンレスをクラッディングした板のアルミニクムまた
はアルミニウム合金の面をエツチングし、これにビュ．
アーな弗素樹脂ディスバージョン１たは充填剤としてポ
リアミドイミドを用いこれが弗素樹脂に対して１０重量
噂以下含む弗素樹脂ディスパージョンを塗布し、ディス
パージッンに含まれる界面活性剤が蒸発する温度以上の
温度で乾燥もしくは焼結し、この上に第２層としてマイ
カ、カーボン、酸化チタン、酸化鉄等の無機顔料を含む
弗素樹脂層を設けることを特徴とするジャー炊飯器等飯
器内釜等の弗素樹脂被覆法である。``Means for Solving the Problems'' That is, the present invention etches the aluminum or aluminum alloy surface of a plate clad with aluminum 1 or an aluminum alloy and stainless steel, and etches the surface of the aluminum or aluminum alloy plate.
Using a fluororesin dispersion 1 or polyamideimide as a filler, a fluororesin dispersion containing less than 10% by weight of the fluororesin is applied, and the temperature is higher than the temperature at which the surfactant contained in the dispersion evaporates. An inner pot of a rice cooker such as a jar rice cooker, which is dried or sintered at a high temperature, and a fluororesin layer containing an inorganic pigment such as mica, carbon, titanium oxide, or iron oxide is provided thereon as a second layer. This is a fluororesin coating method.
な訃上記本発明の実施の態様として少なくとも下記が含
１れる。The embodiments of the present invention include at least the following.
■ 第１層の充填剤としてポリアミドイミドを弗素樹脂
に対して０．５重量懺以上１０重量鳴以下含む弗素樹脂
を用いた上記本発明の弗素樹脂被覆法。(2) The above fluororesin coating method of the present invention using a fluororesin containing 0.5 to 10 weight of polyamideimide based on the fluororesin as a filler in the first layer.
＠ 被覆した膜の伸びが２００％以上である上記本発明
の又は上記■記載の弗素樹脂被覆法。@ The fluororesin coating method of the present invention or the fluororesin coating method described in (2) above, wherein the elongation of the coated film is 200% or more.
以下に本発明を詳細に説明する。The present invention will be explained in detail below.
前記課題を解決するために、本発明者らは、鋭意検討し
た結果本発明を完戊した。In order to solve the above problems, the present inventors have completed the present invention as a result of intensive studies.
つ壕り本発明の特徴は、第１層として塗布したビュアー
な弗素樹脂ディスパージョンもしくは有機の耐熱ボリマ
ーを弗素樹脂に対して１０重量鳴以下含む従来のプライ
マーとは組成の異なるディスパージョンをディスパージ
ョンに含壕れる界面活性荊が蒸発する温度以上の温度で
乾燥もしくは焼結し、この上に第２層として無機顔料を
含む弗素樹脂層を設けることである。こ＼で弗素樹脂に
は四弗化エチレン樹脂、ＰＦＡ樹脂等があるが、いずれ
を用いてもよい。A feature of the present invention is that the first layer is a transparent fluororesin dispersion or a dispersion that has a different composition from conventional primers that contains an organic heat-resistant polymer of 10% by weight or less based on the fluororesin. The method involves drying or sintering at a temperature higher than the temperature at which the surface-active particles contained in the pores evaporate, and then providing a fluororesin layer containing an inorganic pigment as a second layer thereon. Here, the fluororesin includes tetrafluoroethylene resin, PFA resin, etc., and any of them may be used.
これにより後述からも明らかな通り樹脂面のビンホール
を激減させ、エツチング性の悪い材料の耐食性を向上さ
せ蒸気によるアルミニクムの変色を目立たなく．させた
。As will be seen later, this dramatically reduces the number of holes on the resin surface, improves the corrosion resistance of materials with poor etching properties, and makes discoloration of aluminum due to steam less noticeable. I let it happen.
「作用」
クラッド材はエツチング性が悪く、エツチング面にビッ
トが発生し、従来の技術でビュアーな四弗化エチレン樹
脂ディスパージョンを塗布し、乾燥し、焼付けた場合、
ビット部周辺の樹脂厚が小さくなり、ビンホールが発生
し易い。そこでさらに第２層を設けて膜厚を大きくしピ
ンホールの発生を減少させることが考えられる。この第
２層としてはビュアーな四弗化エチレン樹脂では蒸気に
よるアルミニウムの変色が目立つためマイカ、カーボン
、酸化チタン、酸化鉄等の無機顔料を含む弗素樹脂層を
設ける。``Operation'' The clad material has poor etching properties, and bits occur on the etched surface.If a viewer-friendly tetrafluoroethylene resin dispersion is applied using conventional technology, dried, and baked,
The resin thickness around the bit part becomes smaller and bottle holes are more likely to occur. Therefore, it is conceivable to further provide a second layer to increase the film thickness and reduce the occurrence of pinholes. As the second layer, a fluororesin layer containing inorganic pigments such as mica, carbon, titanium oxide, iron oxide, etc. is provided, since the discoloration of aluminum due to steam is noticeable when using a viewer-grade tetrafluoroethylene resin.
第２層を設ける場合は、第１層の塗布後ディスパージョ
ンに含１れる界面活性剤が十分に蒸発する温度（２００
〜２５０℃）以上の温度で乾燥もしくは焼結する。第１
層がブライマーでなく本発明の様にビュアーな四弗化エ
チレン樹脂もしくはプライマーに比べ四弗化エチレン樹
脂の成分が多い樹脂の場合、第１屑を塗布後水分を乾燥
させるだけで第２層を塗布すると樹脂に含まれる水分が
第１層筐で浸透し、第２層とともに焼き付けるとクラッ
クを発生し易い。一方第１層の界面活性剤を十分に蒸発
させるか、もしくはさらに第１層を焼結させた場合は、
第２層を塗布した場合でも第１層への水の浸透が無く、
焼き付け時にクラックが発生しない。こうして作られた
樹脂膜は第１層のビュアーな四弗化エチレン樹脂のみの
塗膜に比較し膜厚が大きな、ビンホールの極めて少ない
塗膜となる。When a second layer is provided, the temperature at which the surfactant contained in the dispersion sufficiently evaporates after coating the first layer (200
Dry or sinter at temperatures above 250°C. 1st
If the layer is not a primer but a viewer tetrafluoroethylene resin like the present invention, or a resin with a higher content of tetrafluoroethylene resin than the primer, the second layer can be applied by simply drying the moisture after applying the first scrap. When applied, the moisture contained in the resin penetrates into the first layer of the casing, and when baked together with the second layer, cracks are likely to occur. On the other hand, if the surfactant in the first layer is sufficiently evaporated or the first layer is further sintered,
Even when the second layer is applied, there is no water penetration into the first layer,
No cracks occur during baking. The resin film thus produced is thicker than the first layer, which is a coating made only of a transparent tetrafluoroethylene resin, and has extremely few holes.
第１層がビュアーな四弗化エチレン樹脂の場合でも、上
記の方法により第２層を設けることでビンホールが極め
て少なくなり、耐食性は向上し実用上使用可能となる。Even when the first layer is made of viewer tetrafluoroethylene resin, by providing the second layer using the above method, the number of bottle holes is extremely reduced, corrosion resistance is improved, and the product can be used practically.
さらに材料のエツチング性が悪い場合には密着力は低〈
、長期の炊飯等使用によりアルミニクムが腐食し塗膜が
剥離してくる場合がある。第１層のビエアーな樹脂に充
填剤としてポリアミドイミドを加えると密着力は向上し
耐食性は飛躍的に向上する。ポリアミドイミドは極少量
充填するだけでも密着性向上に効果はあるが、弗素樹脂
に対し０．５重量鳴以上充填するとより効果がある。Furthermore, if the etching properties of the material are poor, the adhesion will be low.
The aluminum may corrode and the coating may peel off due to long-term use, such as when cooking rice. Adding polyamide-imide as a filler to the first layer of air resin improves adhesion and dramatically improves corrosion resistance. Even if polyamide-imide is filled in a very small amount, it is effective in improving adhesion, but it is more effective if it is filled in an amount of 0.5 weight or more to the fluororesin.
１た、１０重量囁より多く充填すると塗膜の伸びが低下
し、プレス時にビンホールを生シる。Also, if the amount is more than 10% by weight, the elongation of the coating will decrease and holes will be formed during pressing.
本発明の範囲内で第１層にポリアミドイミドを充填して
もビュアーな四弗化エチレン樹脂のみの場合に比較して
ビンホールが増加することはな〈第２層を上記同様に設
けることで密着力も十分な、ビンホールの極めて少ない
塗膜となる。Even if the first layer is filled with polyamide-imide within the scope of the present invention, the number of bottle holes will not increase compared to the case where only the visible tetrafluoroethylene resin is used. The result is a coating film with sufficient strength and extremely few holes.
「実施例」 以下に本発明の実施例を述べる。"Example" Examples of the present invention will be described below.
実施例１：（第１図参照）
素材としてアルミニウムとステンレスをクラッディング
した板厚２．０鴫のもの（１０）を用いた。Example 1: (See Fig. 1) As a material, a plate (10) clad with aluminum and stainless steel and having a thickness of 2.0 mm was used.
これは（株）神戸製鋼所製でアルミニウム合金（ ＡＳ
Ｂ材）（１）、アルミニウム（２）、ステンレス（３）
が第１２図の様に３層にクラッディングされている（ｔ
１＝０．７５瓢， ｔ２＝０．７ ５ｗ， ｔ３＝０．
５曙）。！ずこのアルミニウム面を陽極として塩化アン
モニウム水溶液中２５クーロン／ｄ の電気量で電気化
学的エツチング処理を行い表面に微細な凹凸（１１）を
形戊させた。This is made by Kobe Steel, Ltd. and is made of aluminum alloy (AS
B material) (1), aluminum (2), stainless steel (3)
is clad in three layers as shown in Figure 12 (t
1=0.75 gourd, t2=0.75w, t3=0.
5 Akebono). ! Using the aluminum surface of Zuko as an anode, an electrochemical etching process was performed in an ammonium chloride aqueous solution with an electric charge of 25 coulombs/d 2 to form fine irregularities (11) on the surface.
この面に第１表に示す樹脂配合のものをスビンコートに
よりコーティングし第１表に示す温度で乾燥１たは焼戊
した（この第１層を（１２）で示す）。This surface was coated with a resin composition shown in Table 1 using Subin Coat, and dried or baked at the temperature shown in Table 1 (this first layer is shown as (12)).
この上にさらに樹脂に対してマイカ２鳴、顔料としてカ
ーボン２嘴を含むＰＴＦＥをスプレーコートによって塗
布し４２０℃で５分焼威した（この第２層を（３）で示
す）。On top of this, PTFE containing 2 mica as a resin and 2 carbon as a pigment was applied by spray coating and baked at 420° C. for 5 minutes (this second layer is shown as (3)).
このようにして得られたコーティング板をプレス戊形に
よって釜形状に加工し、以下の項目を評価した。The coated plate thus obtained was processed into a pot shape by press-shaping, and the following items were evaluated.
■ピンホール試験
ろ紙にアルミノン液をしみこ壕せ、これを釜のコーティ
ング面に貼りつけ、上からアルミニクム箔で押えつける
。アルミニクム箔を−電極、釜を十電極として３０Ｖの
電圧を加える。塗膜にビンホールが有り、通電した部分
は、ろ紙に赤点が残る。■Pinhole test: Soak aluminon solution into a filter paper, stick it on the coated surface of the pot, and press it down with aluminum foil from above. A voltage of 30 V was applied using the aluminum foil as the - electrode and the pot as the - electrode. There are holes in the paint film, and red dots remain on the filter paper where electricity is applied.
■耐食性
ハウス釦でんの素２５ｇを水１ｊに溶かした釦でんの素
液を作り、これを釜に８部程度入れ、途中で適宜液を補
充しなから８Ｈ煮沸しその後１６Ｈ保温する。このサイ
クルを繰り返し塗膜面に直径１ｍ以上のふくれが発生す
る寸での時間を測定する。■ Corrosion Resistance Make a stock solution of button den by dissolving 25 g of house button den powder in 1 j of water, put about 8 parts of this in a pot, replenish the solution as needed during the process, boil for 8 hours, and then keep warm for 16 hours. This cycle is repeated and the time taken until a blister of 1 m or more in diameter appears on the coating surface is measured.
■密着性
コーティング面にナイフで下地に達する碁盤目（１ｗ間
隔の１００１す）を入れ、この面にセロテープを押しつ
け、ただちにひき剥す。■ Adhesiveness Use a knife to make a grid pattern (1001 squares with 1W spacing) on the coating surface that reaches the base, press cellophane tape onto this surface, and immediately peel it off.
これを４０回繰り返し１００″！すの樹脂のうち残って
いる個数を数える。Repeat this 40 times and count the number of 100'' resins remaining.
■膜伸び
釜の側面部試片を８ ％ ＨＣＩ溶液中に入れ、アルミ
ニクム、ステンレスを溶解し塗膜（７）のみを回収する
。これを幅１０鴫に切り、第３図の様に長さ（Ｌ） ３
０ ｍのチャックに両端をはさむ。このチャックの片
端（６）を固定し、もう片側の端（５）を１００１１１
１／ で引っ張り膜か破断しｍ１ｎ
た時の膜の伸びを測定する。(2) Place the side specimen of the film stretching kettle in an 8% HCI solution, dissolve the aluminum and stainless steel, and collect only the coating film (7). Cut this into 10 pieces in width and make the length (L) 3 as shown in Figure 3.
Clip both ends into a 0 m chuck. Fix one end (6) of this chuck and attach the other end (5) to 100111
The elongation of the film is measured when the film is tensed at 1/m1n and breaks.
上記の評価結果を第１表に示す。The above evaluation results are shown in Table 1.
「発明の効果」
以上の様に本発明の弗素樹脂被覆法によると被覆樹脂面
のビンホールを激減させ得、エツチングの悪い材料の耐
食性の向上も計れる。"Effects of the Invention" As described above, according to the fluororesin coating method of the present invention, it is possible to drastically reduce the number of holes on the surface of the coated resin, and it is also possible to improve the corrosion resistance of materials that are poorly etched.
第１図は本発明に於ける実施例の弗素樹脂被覆物の断面
図、第２図は本発明に於ける実施例の板素材を説明する
断面図、第３図は本発明に於ける実施例の膜伸びの評価
方法を説明する図を大々例示している。Fig. 1 is a cross-sectional view of a fluororesin coating according to an embodiment of the present invention, Fig. 2 is a cross-sectional view illustrating a plate material of an embodiment of the present invention, and Fig. 3 is a cross-sectional view of an embodiment of the present invention. A diagram illustrating an example method for evaluating film elongation is illustrated extensively.
Claims (1)
スをクラッディングした板のアルミニウムまたはアルミ
ニウム合金の面をエツチングし、これにピュアーな弗素
樹脂ディスパージョンまたは充填剤としてポリアミドイ
ミドを用いこれが弗素樹脂に対して１０重量％以下含む
弗素樹脂ディスパージョンを塗布し、これをディスパー
ジョンに含まれる界面活性剤が蒸発する温度以上の温度
で乾燥もしくは焼結し、この上に第２層としてマイカ、
カーボン、酸化チタン、酸化鉄等の無機顔料を含む弗素
樹脂層を設けることを特徴とする弗素樹脂被覆法。(1) The aluminum or aluminum alloy surface of a plate clad with aluminum or aluminum alloy and stainless steel is etched, and pure fluororesin dispersion or polyamide-imide is used as a filler, and this is 10% by weight based on the fluororesin. A fluororesin dispersion containing the following is applied, dried or sintered at a temperature higher than the temperature at which the surfactant contained in the dispersion evaporates, and a second layer of mica,
A fluororesin coating method characterized by providing a fluororesin layer containing an inorganic pigment such as carbon, titanium oxide, or iron oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34339389A JP2861172B2 (en) | 1989-12-31 | 1989-12-31 | Fluorine resin coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34339389A JP2861172B2 (en) | 1989-12-31 | 1989-12-31 | Fluorine resin coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03207473A true JPH03207473A (en) | 1991-09-10 |
| JP2861172B2 JP2861172B2 (en) | 1999-02-24 |
Family
ID=18361169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34339389A Expired - Fee Related JP2861172B2 (en) | 1989-12-31 | 1989-12-31 | Fluorine resin coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2861172B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014083055A (en) * | 2012-10-19 | 2014-05-12 | Sumitomo Electric Ind Ltd | Method for manufacturing a metal product having a fluorine resin coat |
| US9497852B2 (en) | 2011-05-23 | 2016-11-15 | Sumitomo Electric Fine Folymer, Inc. | High-frequency circuit substrate |
-
1989
- 1989-12-31 JP JP34339389A patent/JP2861172B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9497852B2 (en) | 2011-05-23 | 2016-11-15 | Sumitomo Electric Fine Folymer, Inc. | High-frequency circuit substrate |
| JP2014083055A (en) * | 2012-10-19 | 2014-05-12 | Sumitomo Electric Ind Ltd | Method for manufacturing a metal product having a fluorine resin coat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2861172B2 (en) | 1999-02-24 |
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