JPS62269780A - Formation of hot melt fluoroplastic layer onto metallic surface - Google Patents
Formation of hot melt fluoroplastic layer onto metallic surfaceInfo
- Publication number
- JPS62269780A JPS62269780A JP11159986A JP11159986A JPS62269780A JP S62269780 A JPS62269780 A JP S62269780A JP 11159986 A JP11159986 A JP 11159986A JP 11159986 A JP11159986 A JP 11159986A JP S62269780 A JPS62269780 A JP S62269780A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- powder
- layer
- fluororesin
- heat
- 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
- 239000012943 hotmelt Substances 0.000 title claims abstract description 8
- 229920002313 fluoropolymer Polymers 0.000 title abstract 7
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000000843 powder Substances 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 50
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 claims abstract description 28
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910021563 chromium fluoride Inorganic materials 0.000 claims abstract description 4
- FTBATIJJKIIOTP-UHFFFAOYSA-K trifluorochromium Chemical compound F[Cr](F)F FTBATIJJKIIOTP-UHFFFAOYSA-K 0.000 claims abstract description 4
- 229910021594 Copper(II) fluoride Inorganic materials 0.000 claims abstract description 3
- GWFAVIIMQDUCRA-UHFFFAOYSA-L copper(ii) fluoride Chemical compound [F-].[F-].[Cu+2] GWFAVIIMQDUCRA-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229910001512 metal fluoride Inorganic materials 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 6
- -1 perfluoroalkyl vinyl ether Chemical compound 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005187 foaming Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910001430 chromium ion Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012530 fluid Substances 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
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 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 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical compound FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002294 plasma sputter deposition Methods 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
及皿二ゑ亘丘１
本発明は、金属表面への熱溶融性フッ素樹脂層の形成方
法に関し、ざらに詳しくは、ステンレス鋼、鉄、アルミ
ニウムなどの金属表面に、接着性に優れた熱溶融性フッ
素樹脂層を形成するための方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention 1. The present invention relates to a method for forming a heat-fusible fluororesin layer on a metal surface, and more specifically, The present invention relates to a method for forming a heat-fusible fluororesin layer with excellent adhesiveness on a metal surface such as aluminum.
口のｒＷ的背景ならびにその問題膚
テトラフルオロエチレンとパーフルオロアルキルビニル
エーテルとの共重合体（以下ＰＦＡと略記することがあ
る）などの熱溶融性フッ素樹脂は、耐熱性、耐候性、耐
化学薬品性、滑り特性、非粘着性などの点において、他
の合成樹脂と比較して、著しく優れた特性を有しており
、この特性を利用して、腐蝕性流体あるいは高温流体を
扱うパイプライン、タンクあるいは機械装置などの耐食
性ライニング材として広く利用されている。Background and problems related to oral rW Heat-melting fluororesins such as copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ether (hereinafter sometimes abbreviated as PFA) have excellent heat resistance, weather resistance, and chemical resistance. It has significantly superior properties compared to other synthetic resins in terms of elasticity, sliding properties, non-adhesiveness, etc. Utilizing this property, it can be used for pipelines that handle corrosive fluids or high-temperature fluids, It is widely used as a corrosion-resistant lining material for tanks and mechanical equipment.
ところがＰＦＡなとのフッ素樹脂は、上記のように非粘
着性であるため、伯の材質たとえば金属との接着が接着
剤を用いてもかなり困難である。However, since fluororesins such as PFA are non-adhesive as mentioned above, it is quite difficult to bond them to other materials such as metals, even if an adhesive is used.
もし金属などの基材とフッ素樹脂との接着性が悪いと、
フッ素樹脂ライナーが基材から浮き上がってしまい、ラ
イナーとしての機能を果さなくなるため好ましくない。If the adhesion between the base material such as metal and the fluororesin is poor,
This is not preferable because the fluororesin liner will lift up from the base material and will no longer function as a liner.
このためＰＦＡなとのフッ素樹脂と金属との接着性を高
めるための方法が数多く提案されている。For this reason, many methods have been proposed to improve the adhesion between fluororesins such as PFA and metals.
その１つとしては、たとえば金属などの基材の表面にア
リ溝を形成して基材とフッ素樹脂との接着性を高める方
法がある。ところがこの方法では基材表面にアリ溝を形
成するのに手間がかかり、しかも基材とフッ素樹脂との
機械的接着性も充分ではないという問題点があった。ま
たフッ素樹脂表面を、液体アンモニアに金属ナトリウム
を溶かした溶液で処理して、その表面を化学的に活性化
する方法が提案されている。ところがこの方法では、処
理液自体が環境汚染を引き起す恐れがあるとともに、そ
の取扱いに危険が伴なうという問題点があった。また、
フッ素樹脂表面にプラズマスパッタリングなどの物理化
学的処理を施したり、あるいはフッ素樹脂表面を機械的
に粗面化するなどの方法も提案されているが、この方法
では、処理に手間がかかったりあるいはコスト上昇を伴
なうなどの問題点があった。One such method is to form dovetail grooves on the surface of a base material such as metal to improve the adhesiveness between the base material and the fluororesin. However, this method has problems in that it takes time and effort to form dovetail grooves on the surface of the base material, and the mechanical adhesion between the base material and the fluororesin is not sufficient. Furthermore, a method has been proposed in which the surface of a fluororesin is treated with a solution of metallic sodium dissolved in liquid ammonia to chemically activate the surface. However, this method has problems in that the treatment liquid itself may cause environmental pollution and its handling is dangerous. Also,
Other methods have been proposed, such as applying physicochemical treatments such as plasma sputtering to the fluororesin surface, or mechanically roughening the fluororesin surface, but these methods are time-consuming and costly. There were problems such as an increase in the price.
一方、本願出願人は、特開昭５５−６１゜９６１号公報
にて、金属表面にクロムイオン、水素イオンを含有する
フッ素樹脂の水性ディスパージョンからなるプライマー
を塗布し、その上に熱溶融性フッ素樹脂粉末を均一に散
布付着し、熱溶融性フッ素樹脂の分解温度以上に加熱溶
融することを特徴とする°金属表面にフッ素樹脂の接着
可能な表面層を形成する方法を提案している。この方法
によれば、金属表面上に強固に接着されたフッ素樹脂層
を設けることができるが、プライマーはクロムイオンを
含有しているため、その取扱いに危険が伴なうとともに
環境汚染を引き起す恐れがあるという問題点があった。On the other hand, in Japanese Patent Application Laid-Open No. 55-61゜961, the applicant applied a primer consisting of an aqueous dispersion of fluororesin containing chromium ions and hydrogen ions to the metal surface, and applied a heat-fusible primer on the primer. We are proposing a method for forming an adhesive surface layer of fluororesin on a metal surface, which is characterized by uniformly spreading and adhering fluororesin powder and heating and melting it above the decomposition temperature of the heat-melting fluororesin. According to this method, it is possible to provide a strongly bonded fluororesin layer on the metal surface, but since the primer contains chromium ions, its handling is dangerous and causes environmental pollution. The problem was that there was fear.
しかも接着時に加熱しているためプライマーの分解に起
因して発泡現象が認められるという問題点があった。Moreover, since the adhesive is heated during adhesion, there is a problem in that a foaming phenomenon is observed due to the decomposition of the primer.
１」五旦刀
本発明は、上記のような従来技術に伴なう問題点を解決
しようとするものであって、環境汚染を引起す恐れのあ
るクロムイオンを含有するプライマーあるいは有機物を
含有するプライマーを用いなくとも、金属表面上にＰＦ
Ａなとの熱溶融性フッ素樹脂層を強固に形成することの
できる方法を提供することを目的としている。1. The present invention is intended to solve the problems associated with the prior art as described above, and is aimed at solving the problems associated with the prior art as described above. PF on metal surfaces without using a primer
The purpose of the present invention is to provide a method that can firmly form a heat-melting fluororesin layer of A.
及皿五且ヌ
本発明に係る金属表面への熱溶融性フッ素樹脂層の形成
方法は、金属表面に金属フッ化物粉末を付着させた後、
この金属フッ化物粉末上に熱溶融性フッ素樹脂粉末層を
設け、次いで熱溶融性フッ素樹脂の融点以上に加熱する
ことを特徴としている。The method for forming a heat-fusible fluororesin layer on a metal surface according to the present invention includes depositing metal fluoride powder on the metal surface, and then
The method is characterized in that a heat-fusible fluororesin powder layer is provided on the metal fluoride powder, and then heated to a temperature higher than the melting point of the heat-fusible fluororesin.
本発明に係る金属表面への熱溶融性フッ素樹脂層の形成
方法によれば、金属表面に金属フッ化物粉末を付着させ
た復、この金属フッ化物粉末上に熱溶融性フッ素樹脂粉
末層を設け、次いで熱溶融性フッ素樹脂の融点以上に加
熱しているため、プライマーを用いなくともフッ素樹脂
層と金属とを強固に接着することができ、しかも接着に
際して必ずしも加圧装置を必要とせず、その上接着時に
プライマーの分解による発泡′が生ずることがないとい
う効果が得られる。According to the method for forming a heat-fusible fluororesin layer on a metal surface according to the present invention, a metal fluoride powder is attached to the metal surface, and then a heat-fusible fluororesin powder layer is formed on the metal fluoride powder. Then, since it is heated above the melting point of the hot-melt fluororesin, it is possible to firmly bond the fluororesin layer and metal without using a primer, and there is no need for a pressure device for bonding. The effect is that foaming due to decomposition of the primer does not occur during top bonding.
１匪０且迷煎思旦
以下本発明に係る金属表面への熱溶融性フッ素樹脂層の
形成方法について具体的に説明する。The method for forming a heat-fusible fluororesin layer on a metal surface according to the present invention will be explained in detail below.
本発明では金属表面に熱溶融性フッ素樹脂層が形成され
るが、この熱溶融性フッ素樹脂層が形成される金属とし
ては、ステンレス鋼、鉄、アルミニウムなどの金属が広
く挙げられる。In the present invention, a heat-fusible fluororesin layer is formed on a metal surface, and metals on which this heat-fusible fluororesin layer is formed include a wide range of metals such as stainless steel, iron, and aluminum.
フッ素樹脂層が形成される金属は、予じめその表面にサ
ンドブラスト処理あるいはグリッドブラスト処理などを
施して、金属表面に付着している錆などの異物を取り除
いて金属表面の洗浄化を図るとともに、金属表面の粗面
化を行なうことが、金属とフッ素樹脂層との接着力を高
める上で好ましい。The surface of the metal on which the fluororesin layer is to be formed is subjected to sandblasting or grid blasting in advance to remove foreign substances such as rust adhering to the metal surface and to clean the metal surface. It is preferable to roughen the metal surface in order to increase the adhesive strength between the metal and the fluororesin layer.
次にこのような金属表面に、金属フッ化物粉末を被着さ
せる。被着される金属フッ化物粉末としては、具体的に
は、フッ化亜鉛、フッ化銅、フッ化クロム、などが用い
られる。これらの金属フッ化物粉末は単独であるいは２
種以上組合せて用いてもよい。このうち特に、フッ化亜
鉛などが好ましい。Metal fluoride powder is then deposited on such metal surfaces. As the metal fluoride powder to be deposited, specifically, zinc fluoride, copper fluoride, chromium fluoride, etc. are used. These metal fluoride powders can be used alone or in combination.
You may use it in combination of more than one kind. Among these, zinc fluoride is particularly preferred.
これらの金属フッ化物粉末は、その粒径が２００μｍ以
下好ましくは８０μｍ以下であることが望ましい。金属
フッ化物粉末が２００μｍを越えると、金属フッ化物粉
末が粗くなりすぎて金属面から離岸するため好ましくな
い。It is desirable that these metal fluoride powders have a particle size of 200 μm or less, preferably 80 μm or less. If the metal fluoride powder exceeds 200 μm, it is not preferable because the metal fluoride powder becomes too coarse and separates from the metal surface.
上記のような金属フッ化物粉末は、金属表面に１ ＣＩ
Ａ当り０．００１〜０．１ｇ好ましくは０．００３〜０
．００５ｇの伍で付着されることが望ましい。金属フッ
化物粉末を金属表面に付着させるには、たとえば金属フ
ッ化物粉末をアセトンなどの有機溶媒に分散混合させた
ものを、金属表面にたとえばハケ塗り法などにより塗布
した後、有機溶媒を乾燥させればよい。The metal fluoride powder as described above is applied to the metal surface at 1 CI
0.001-0.1g per A, preferably 0.003-0
．． It is preferable that the amount is 0.005g. To attach metal fluoride powder to a metal surface, for example, a mixture of metal fluoride powder dispersed in an organic solvent such as acetone is applied to the metal surface using a brush coating method, and then the organic solvent is dried. That's fine.
金属と熱溶融性フッ素樹脂層との接着性をざらに高める
ため、金属フッ化物粉末とともに、金属粉末または金属
酸化物粉末あるいはこの両者を用いることもできる。In order to roughly improve the adhesion between the metal and the heat-fusible fluororesin layer, a metal powder, a metal oxide powder, or both can be used together with the metal fluoride powder.
上記のような金属粉末としては、具体的には、亜鉛、コ
バルト、マンガン、スズ、銅、マグネシウムなどの金属
粉末が用いられる。Specifically, metal powders such as zinc, cobalt, manganese, tin, copper, and magnesium are used as the above metal powders.
上記のような金属酸化物粉末としては、具体的には、酸
化亜鉛、酸化コバルト、酸化マンガン、酸化鉄、酸化銅
、酸化スズ、酸化マグネシウム、などの金属酸化物粉末
が用いられる。As the above metal oxide powder, specifically, metal oxide powder such as zinc oxide, cobalt oxide, manganese oxide, iron oxide, copper oxide, tin oxide, magnesium oxide, etc. is used.
上記のようにして、金属表面に金属フッ化物粉末を付着
させた後、この金属フッ化物粉末上に、熱溶融性フッ素
樹脂粉末層を設ける。この熱溶融性フッ素樹脂としては
、具体的には、前述のＰＦＡ、テトラフルオロエチレン
とへキサフルオロプロピレンとの共重合体で必るＦＥＰ
、テトラフルオロエチレンとへキサフルオロプロピレン
とパーフルオロアルキルビニルエーテルとの共重合体で
あるＥＰＥ、ポリクロロトリフルオロエチレンであるＰ
ＣＴＦＥ、エチレンとテトラフルオロエチレンとの共重
合体であるＥＴＦＥなどが用いられる。After the metal fluoride powder is attached to the metal surface as described above, a heat-fusible fluororesin powder layer is provided on the metal fluoride powder. Specifically, examples of the heat-melting fluororesin include the above-mentioned PFA and FEP, which is a copolymer of tetrafluoroethylene and hexafluoropropylene.
, EPE, which is a copolymer of tetrafluoroethylene, hexafluoropropylene, and perfluoroalkyl vinyl ether, and P, which is polychlorotrifluoroethylene.
CTFE, ETFE which is a copolymer of ethylene and tetrafluoroethylene, etc. are used.
これらの熱溶融性フッ素樹脂は、その粒径が２０〜５０
０μｍ好ましくは１００〜５００μｍ程度であることが
望ましい。このフッ素樹脂粉末が２０μｍ未満であるか
めるいは５００μｍを越えると、発泡現象が認められる
ため好ましくない。These heat-melting fluororesins have a particle size of 20 to 50
It is desirable that the thickness is about 0 μm, preferably about 100 to 500 μm. If the fluororesin powder has a diameter of less than 20 .mu.m or exceeds 500 .mu.m, a foaming phenomenon will occur, which is not preferable.
上記のような熱溶融性フッ素樹脂粉末は、金属表面に１
ｃｔｉ当り０．１〜２．Ｏ５Ｊ好ましくは０．５〜１
．０９の星で設けて、フッ素樹脂の厚さが０．４〜１０
ｍｍ好ましくは２〜４扁程度とすることが望ましい。The heat-melting fluororesin powder as described above is applied to the metal surface at 1
0.1-2. O5J preferably 0.5-1
．． Provided with 09 stars, the thickness of the fluororesin is 0.4 to 10
It is desirable to set the thickness to about 2 to 4 mm, preferably about 2 to 4 mm.
このようにして金属フッ化物粉末上に熱溶融性フッ素樹
脂層を設けた後に、この熱溶融性フッ素樹脂の溶融温度
以上の温度で加熱する。熱溶融性フッ素樹脂がＰＦＡで
ある場合には３６０〜３７０°Ｃの温度で加熱溶融する
ことが好ましい。After the heat-fusible fluororesin layer is thus provided on the metal fluoride powder, it is heated at a temperature equal to or higher than the melting temperature of the heat-fusible fluororesin. When the heat-melting fluororesin is PFA, it is preferably heated and melted at a temperature of 360 to 370°C.
この加熱時間は一般に０．５〜１０時間好ましくは０．
５〜１時間であることが好ましい。加熱後の冷却は、た
とえば自然放冷などにより行なえばよい。The heating time is generally 0.5 to 10 hours, preferably 0.5 to 10 hours.
It is preferable that it is 5 to 1 hour. Cooling after heating may be performed, for example, by natural cooling.
このようにして金属表面上に金属フッ化物粉末を介して
熱溶融性フッ素樹脂層を形成すると、金属表面に金属フ
ッ化物粉末を用いずに熱溶融性フッ素樹脂層を形成した
場合と比較して、金属とフッ素樹脂層との接着力は著し
く向上する。たとえば鉄板上にフッ化亜鉛粉末を介して
Ｐ Ｆ Ａ 留を接着させた場合には、その剥離強度は
９〜１０に９ ｆ ／ ｃｍであるのに対し、鉄板上に
直接ＰＦＡ層を接着させた場合にはその剥離強度は２〜
３Ｋｇ ｆ ／ ｃｍであるにすぎない。When a heat-fusible fluororesin layer is formed on a metal surface in this way via a metal fluoride powder, compared to a case where a heat-fusible fluororesin layer is formed on a metal surface without using a metal fluoride powder. , the adhesion between the metal and the fluororesin layer is significantly improved. For example, when a PFA layer is bonded onto a steel plate through zinc fluoride powder, its peel strength is 9 to 10 f/cm, whereas when a PFA layer is bonded directly onto a steel plate, the peel strength is 9 f/cm. In this case, the peel strength is 2~
It is only 3Kg f/cm.
また本発明では、金属表面に熱溶融性フッ素樹脂層を形
成するに際して、有機樹脂を含むプライマーを塗布して
いないため、プライマーの分解による発泡が全く生ぜず
、外観が美しく、しかもフッ素樹脂層と金属との接着強
度は優れている。ざらに接着に際してフッ素樹脂層と金
属板とを加圧圧着させる必要は必ずしもない。In addition, in the present invention, when forming a heat-melting fluororesin layer on the metal surface, a primer containing an organic resin is not applied, so no foaming occurs due to decomposition of the primer, and the appearance is beautiful. The adhesive strength with metal is excellent. It is not necessarily necessary to pressure-bond the fluororesin layer and the metal plate during bonding.
発明の効果
本発明に係る金属表面への熱溶融性フッ素樹脂層の形成
方法によれば、金属表面に金属フッ化物粉末を付着させ
た復、この金属フッ化物粉末上に熱溶融性フッ素樹脂粉
末層を設け、次いで熱溶融性フッ素樹脂の融点以上に加
熱しているため、プライマーを用いなくともフッ素樹脂
層と金属とを強固に接着することができ、しかも接着に
際して必ずしも加圧装置を必要とせず、その上接着時に
ブライマーの分解による発泡が生ずることがないという
効果が得られる。Effects of the Invention According to the method for forming a heat-fusible fluororesin layer on a metal surface according to the present invention, after a metal fluoride powder is attached to the metal surface, a heat-fusible fluororesin powder is deposited on the metal fluoride powder. Because the layer is applied and then heated above the melting point of the hot-melt fluororesin, the fluororesin layer and metal can be firmly bonded without using a primer, and a pressure device is not necessarily required for bonding. Moreover, the effect that foaming due to decomposition of the brimer does not occur during adhesion can be obtained.
以下本発明を実施例により説明するが、本発明はこれら
実施例に限定されるものではない。EXAMPLES The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.
Ｘ施■ユ
鉄板（ＳＳ４１）の表面をアセトンで脱脂した後サンド
ブラスト処理して、表面の錆などの異物を取り除いて洗
浄化するとともに金属板表面を粗面化した。The surface of the X-treated iron plate (SS41) was degreased with acetone and then subjected to sandblasting treatment to remove foreign matter such as rust on the surface and clean it, as well as roughen the surface of the metal plate.
このようにして表面が粗面化された鉄板上に、粒径３０
μ瓦のフッ化亜鉛粉末がアセトン溶媒中に分散されてな
る組成物を、金属表面１ ｃｉ当り０．００５’９の旦
でフッ化亜鉛粉末が塗布されるように塗布した後、乾燥
して金属表面上にフッ化亜鉛粉末を付着させた。On the iron plate whose surface has been roughened in this way, a grain size of 30
A composition consisting of μ-tile zinc fluoride powder dispersed in an acetone solvent is applied so that the zinc fluoride powder is applied at a rate of 0.005'9 per ci of metal surface, and then dried. Zinc fluoride powder was deposited on the metal surface.
次にこのフッ化亜鉛粉末上に、粒径２００μｍのＰＦＡ
粉末を１ ｃｒｎ当り０．７ｇの量で設けた後、３７０
’Ｃの温度で１時間加熱した。Next, on this zinc fluoride powder, PFA with a particle size of 200 μm was added.
After applying the powder in an amount of 0.7 g per crn, 370
It was heated at a temperature of 'C for 1 hour.
このようにして鉄板上にＰＦＡ層を形成した。In this way, a PFA layer was formed on the iron plate.
このＰＦＡ層と鉄板との剥離強度（Ｋｇｆ／ｃＩｆｔ）
を調べたところ、剥離強度は８．ＯＫ’ｊ’ｌ’／ｃｍ
であった。Peel strength between this PFA layer and the steel plate (Kgf/cIft)
When examined, the peel strength was 8. OK'j'l'/cm
Met.
工笠■ユ
実施例１において、鉄板上にフッ化亜鉛粉末を付着させ
ない以外は実施例１と同様にして、鉄板上にＰＦＡ層を
形成した。In Example 1, a PFA layer was formed on the iron plate in the same manner as in Example 1 except that the zinc fluoride powder was not deposited on the iron plate.
このＰＦＡ層と鉄板との剥離強度は、２〜３ＮＪ ｆ
／口であった。The peel strength between this PFA layer and the iron plate is 2 to 3 NJ f
/It was a mouth.
Ｘ厖叢２
実施例１において、フッ化亜鉛粉末の代わりに、粒径８
０μ雇のフッ化クロム粉末を用い、加熱時間を６時間と
した以外は、実施例１と同様にして鉄板上にＰＦＡ層を
形成した。In Example 1, instead of zinc fluoride powder, particle size 8
A PFA layer was formed on an iron plate in the same manner as in Example 1, except that chromium fluoride powder with a density of 0μ was used and the heating time was changed to 6 hours.
このＰＦＡ層と鉄板との剥離強度は、７．９Ｋｇ ｆ
／ ｃｒｎであった。The peel strength between this PFA layer and the iron plate is 7.9Kg f
/ crn.
よ思■旦
実施例１において、フッ化亜鉛粉末の代わりに、粒径８
０μｍのフッ化亜鉛粉末と粒径３０μ雇の亜鉛粉末との
混合物（フッ化亜鉛粉末６４重量％、亜鉛粉末３６重重
量）を用いた以外は、実施例１と同様にして鉄板上にＰ
ＦＡ層を形成した。When I thought about it, in Example 1, instead of zinc fluoride powder, a particle size of 8
P was deposited on an iron plate in the same manner as in Example 1, except that a mixture of 0 μm zinc fluoride powder and 30 μm particle size zinc powder (64% by weight of zinc fluoride powder, 36% by weight of zinc powder) was used.
An FA layer was formed.
このＰＦＡ層と鉄板との剥離強度は、１８．５に’Ｊ
ｆ ／ ｃｍであった。The peel strength between this PFA layer and the steel plate is 18.5'J
f/cm.
Claims (1)
金属フッ化物粉末上に熱溶融性フッ素樹脂粉末層を設け
、次いで熱溶融性フッ素樹脂の融点以上に加熱すること
を特徴とする金属表面への熱溶融性フッ素樹脂層の形成
方法。 ２）金属フッ化物粉末が、２００μｍ以下の粒径を有す
る、フッ化亜鉛、フッ化銅またはフッ化クロムである特
許請求の範囲第１項に記載の方法。 ３）熱溶融性フッ素樹脂が、２０〜５００μｍの粒径を
有する、テトラフルオロエチレンとパーフルオロアルキ
ルビニルエーテルとの共重合体である特許請求の範囲第
１項に記載の方法。[Claims] 1) After attaching a metal fluoride powder to a metal surface, a heat-fusible fluororesin powder layer is provided on the metal fluoride powder, and then heated to a temperature higher than the melting point of the heat-fusible fluororesin. A method for forming a heat-fusible fluororesin layer on a metal surface, characterized by: 2) The method according to claim 1, wherein the metal fluoride powder is zinc fluoride, copper fluoride or chromium fluoride with a particle size of 200 μm or less. 3) The method according to claim 1, wherein the hot-melt fluororesin is a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether having a particle size of 20 to 500 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11159986A JPH0720575B2 (en) | 1986-05-15 | 1986-05-15 | Method for forming heat fusible fluorine resin layer on metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11159986A JPH0720575B2 (en) | 1986-05-15 | 1986-05-15 | Method for forming heat fusible fluorine resin layer on metal surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62269780A true JPS62269780A (en) | 1987-11-24 |
| JPH0720575B2 JPH0720575B2 (en) | 1995-03-08 |
Family
ID=14565439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11159986A Expired - Lifetime JPH0720575B2 (en) | 1986-05-15 | 1986-05-15 | Method for forming heat fusible fluorine resin layer on metal surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720575B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002537481A (en) * | 1999-02-25 | 2002-11-05 | プラティナム、リサーチ、オーガナイズェイシャン、エル、エル、シー | Catalyst containing surface coating composition and method |
-
1986
- 1986-05-15 JP JP11159986A patent/JPH0720575B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002537481A (en) * | 1999-02-25 | 2002-11-05 | プラティナム、リサーチ、オーガナイズェイシャン、エル、エル、シー | Catalyst containing surface coating composition and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0720575B2 (en) | 1995-03-08 |
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