JPH0243847Y2 - - Google Patents

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Publication number
JPH0243847Y2
JPH0243847Y2 JP9399686U JP9399686U JPH0243847Y2 JP H0243847 Y2 JPH0243847 Y2 JP H0243847Y2 JP 9399686 U JP9399686 U JP 9399686U JP 9399686 U JP9399686 U JP 9399686U JP H0243847 Y2 JPH0243847 Y2 JP H0243847Y2
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Japan
Prior art keywords
coating layer
fluorine
vinyl ether
weld
fluoropolymer
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Expired
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JP9399686U
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Japanese (ja)
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JPS63110540U (en
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Description

【考案の詳现な説明】 〔産業䞊の利甚分野〕 本考案は、金属の溶接郚構造に係り、特に溶接
郚をフツ玠系重合䜓からなる被芆局で芆぀た溶接
郚構造に関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a metal weld structure, and more particularly to a weld structure in which the weld is covered with a coating layer made of a fluorine-based polymer.

〔埓来の技術〕[Conventional technology]

埓来より屋根材ずしおトタン板、銅板、ステン
レス板等が䜿甚されおいるが、これらは䞀定の倧
きさのものを耇数溶接しお䜿甚される。
Conventionally, galvanized iron plates, copper plates, stainless steel plates, etc. have been used as roofing materials, and these are used by welding together multiple pieces of a certain size.

トタン板は亜鉛メツキを斜しおあるため、斜工
埌䞀定期間はペンキを塗らなくずも良いものずさ
れおいる。
Since the galvanized iron plates are galvanized, there is no need to paint them for a certain period of time after installation.

たた、銅板は衚面に酞化皮膜が圢成されお保護
されるので、䜕の塗装も斜さずそのたた䜿甚する
こずが倚い。
Furthermore, since copper plates are protected by an oxide film formed on their surfaces, they are often used as is without any coating.

ステンレス鋌は、その皮類によりマルテンサむ
ト系、プラむト系、オヌステナむト系に倧別さ
れ、その衚面が氎分や液状媒質に觊れお腐食され
るず、衚面に薄いがしかし匷固でち密な酞化皮膜
ができ、それが鋌を保護しおそれ以䞊の腐食の進
行を防止するので、䞀般に耐食性に優れおいるも
のずされおいる。このようなこずから、実開昭60
−15466号公報の蚘茉䞭にもあるように、最近ス
テンレス鋌板が屋根材ずしお倚く甚いられるよう
になり、耐食性に優れおいるこずを理由に特に塗
装を斜す必芁がないものずしお甚いられおいる。
Stainless steel is broadly classified into martensitic, ferrite, and austenitic types depending on its type. When the surface of stainless steel is corroded by coming into contact with moisture or liquid media, a thin but strong and dense oxide film forms on the surface. Since it protects the steel and prevents further corrosion, it is generally considered to have excellent corrosion resistance. Because of this, in the 1980s,
As mentioned in Publication No. 15466, stainless steel sheets have recently come into widespread use as roofing materials, and because of their excellent corrosion resistance, they do not need to be painted.

〔考案が解決しようずする問題点〕[Problem that the invention attempts to solve]

しかし、銅板やステンレス鋌を保護する酞化皮
膜は、酞化皮膜であるがゆえに硝酞のような酞化
性の酞には匷いが、非酞化性の酞には匱く、この
点、ステンレス鋌ずいえども腐食防止手段を講じ
る必芁がある。
However, the oxide film that protects copper plates and stainless steel is strong against oxidizing acids such as nitric acid, but weak against non-oxidizing acids. Preventive measures need to be taken.

たた、金属の溶接郚分では溶接熱の圱響で金属
の組織倉化が生じ、ぜい化や耐食性の悪化が生じ
るようになる。その䟋をステンレス鋌に぀いおみ
るず、オヌステナむト系Cr−Niステンレス鋌を、
溶着金属溶接棒を甚いお溶接した堎合、第
図に瀺すように、溶着金属に隣接しお粗粒化さ
れおはいるが固溶化熱凊理枩床以䞊に加熱された
領域が圢成され、さらに、その倖偎に480〜680
℃に加熱されおある皋床炭化物の粒界析出を起こ
した郚分が生じる。この粒界析出郚が腐食性
雰囲気䞭で䜿甚されるず粒界腐食を生じ、いわゆ
る溶接郚腐食Weld decayを起こす。埓぀
お、このような粒界析出郚を腐食性雰囲気から
保護する必芁がある。
In addition, in a welded part of metal, the metal structure changes due to the influence of welding heat, resulting in embrittlement and deterioration of corrosion resistance. Looking at stainless steel as an example, austenitic Cr-Ni stainless steel,
When welding using a welding metal (welding rod), the third
As shown in the figure, a region b, which is coarse-grained but heated above the solution heat treatment temperature, is formed adjacent to the weld metal a, and a region b of 480 to 680
A portion c is formed which is heated to a temperature of 0.degree. C. and undergoes grain boundary precipitation of carbides to some extent. When this grain boundary precipitated portion c is used in a corrosive atmosphere, intergranular corrosion occurs, causing so-called weld decay. Therefore, it is necessary to protect such grain boundary precipitated portions c from a corrosive atmosphere.

たた、溶接棒を甚いお溶接した堎合、溶着金属
は化孊成分ず顕埮鏡組織の異なる材質が集た぀お
いるので、母材に比べお耐食性が䜎䞋し、溶接郚
に遞択的腐食が起こるこずが倚い。
In addition, when welding is performed using a welding rod, the weld metal is made up of materials with different chemical compositions and microstructures, so its corrosion resistance is lower than that of the base metal, and selective corrosion often occurs in the welded area. .

さらに、ステンレス鋌は高䟡なので、高玚なオ
ヌステナむト系Cr−Ni鋌の䜿甚はなるべく局限
しお、その他をより安䟡なステンレス鋌で代甚す
るこずが倚く、このような異皮金属の溶接では溶
着金属は母材のためにその化孊成分が垌釈され、
耐食性に問題を生ずる堎合がある。
Furthermore, since stainless steel is expensive, the use of high-grade austenitic Cr-Ni steel is often limited and cheaper stainless steel is substituted for other parts, and when welding such dissimilar metals, the weld metal is Its chemical components are diluted for wood,
This may cause problems in corrosion resistance.

本考案は、このような点に鑑みなされたもの
で、金属の溶接郚を耐食性に優れたものにするこ
ずを技術的課題ずする。
The present invention was devised in view of these points, and its technical problem is to provide a metal welded portion with excellent corrosion resistance.

〔問題点を解決するための手段〕[Means for solving problems]

すなわち、本考案の芁旚は、第図や第図に
瀺すように、金属の溶接郚を特定のフツ玠系
重合䜓を䞻成分ずする被芆局で芆぀たずころに
あり、この特定のフツ玠系重合䜓ずは、 (a) フルオロオレフむン、 (b) ビニル゚ヌテル、 (c) オレフむン性䞍飜和結合及び加氎分解可胜な
基を持぀有機珪玠化合物ずから 実質的に構成される共重合䜓であ぀お、その少
なくずも䞀郚が架橋されおなるものである。
That is, the gist of the present invention is that, as shown in FIGS. 1 and 2, a welded part 1 of a metal 3 is covered with a coating layer 2 whose main component is a specific fluorine-based polymer. A specific fluorinated polymer is a copolymer consisting essentially of (a) a fluoroolefin, (b) a vinyl ether, and (c) an organosilicon compound having an olefinic unsaturated bond and a hydrolyzable group. It is a combination, at least a part of which is crosslinked.

〔䜜甚〕[Effect]

金属の溶接郚は耐久性を本質的に備えおいるフ
ツ玠系重合䜓を䞻成分ずする被芆局で芆われるの
で、皮々の倖的な砎壊芁因から保護される。
Since the metal weld is covered with a coating layer mainly composed of a fluorine-based polymer which is inherently durable, it is protected from various external destructive factors.

ここで、前蚘フツ玠重合䜓で被芆すべき溶接郚
ずは、少なくずも溶接熱の圱響が及ぶ溶接熱圱響
郚をいう。この溶接郚の構造は溶接方法により異
なり、ステンレス鋌同士を盎接溶着した構造の堎
合ず、溶接棒を甚い、この溶接棒を介圚させおス
テンレス鋌同士を接合せしめた構造の堎合ずがあ
る。
Here, the welded area to be covered with the fluoropolymer refers to the welded heat affected zone which is at least affected by welding heat. The structure of this weld differs depending on the welding method, and there are cases in which stainless steels are directly welded together, and structures in which stainless steels are joined together using a welding rod with the intervening welding rod.

溶接すべき金属はどのような皮類の金属でもよ
い。その䟋ずしお、鉄板に亜鉛メツキしたいわゆ
るトタン板、銅板、ステンレス鋌板等があげられ
る。ステンレス鋌ずしおはマルテンサむト系、フ
゚ラむト系、オヌステナむト系のものがあるが、
ずりわけ溶接熱圱響郚に粒界析出が生じお粒界腐
食の起こりやすいオヌステナむト系のステンレス
鋌に぀いお、本考案に係るフツ玠系重合䜓を䞻成
分ずする被芆局で芆うこずは効果的である。
The metal to be welded can be any type of metal. Examples include galvanized iron plates, copper plates, and stainless steel plates. There are martensitic, ferritic, and austenitic stainless steels.
In particular, it is effective to cover austenitic stainless steel, which is prone to intergranular corrosion due to grain boundary precipitation in the weld heat affected zone, with a coating layer containing the fluoropolymer as a main component according to the present invention.

たた、溶接すべき金属は、䞀方をマルテンサむ
ト系ステンレス鋌、他方をオヌステナむト系ステ
ンレス鋌ずい぀たような異皮金属ずしおも良い。
Further, the metals to be welded may be dissimilar metals such as martensitic stainless steel on one side and austenitic stainless steel on the other.

溶接に溶接棒を甚いる堎合、溶接棒の材質はそ
の化孊成分がなるべく溶接すべき金属母材に近い
ものが奜たしい。異なる化孊成分のものを䜿甚す
るず金属母材から溶着金属ぞず、あるいは溶着金
属から金属母材ぞず化孊成分の移行が起こり、化
孊成分の垌釈された郚分での耐食性が悪化するか
らである。䜆し、本考案ではフツ玠系重合䜓を䞻
成分ずしお被芆局で溶接郚を芆぀おしたうので、
溶接棒の材質にこだわる必芁は必ずしもない。
When using a welding rod for welding, the material of the welding rod is preferably one whose chemical composition is as close as possible to the metal base material to be welded. This is because if different chemical components are used, the chemical components will migrate from the metal base material to the weld metal, or from the weld metal to the metal base material, and the corrosion resistance will deteriorate in areas where the chemical components are diluted. However, in this invention, the welded part is covered with a coating layer mainly composed of fluorine-based polymer, so
It is not necessarily necessary to be particular about the material of the welding rod.

たた、溶接方法は特に限定せず、被芆アヌク溶
接、むナヌトガスアヌク溶接、サブマヌゞアヌク
溶接等の皮々の溶接手段による。
Further, the welding method is not particularly limited, and various welding means such as coated arc welding, inert gas arc welding, and submerged arc welding may be used.

ずころで、本考案で甚いられるフツ玠重合䜓は
少なくずも前述した及びc3皮類のモノマヌ
成分単䜍よりなるランダム共重合䜓であるが、本
考案の目的を損なわない範囲で、少量の他の共重
合可胜なモノマヌ成分、たずえばα−オレフむン
類、シクロオレフむン類、䞍飜和カルボン酞類な
どを共重合させおいおもかたわない。
Incidentally, the fluoropolymer used in the present invention is a random copolymer consisting of at least the above-mentioned three types of monomer component units a, b, and c, but a small amount of other copolymers may be used as long as the purpose of the present invention is not impaired. Polymerizable monomer components such as α-olefins, cycloolefins, unsaturated carboxylic acids, etc. may be copolymerized.

フツ玠系重合䜓を構成するモノマヌ成分である
フルオロオレフむンは、分子䞭に少なくずも
個のフツ玠原子をも぀おおり、奜たしくはオレフ
むンの氎玠原子が党おフツ玠原子及び他のハロゲ
ン原子ずに眮換されおいるペルハロオレフむンが
よく、ずくにペルフルオロオレフむンが奜適であ
る。曎に重合性及び補造された重合䜓の性質の芳
点からは、炭玠原子数たたはのフルオロオレ
フむンずくにベルフルオロオレフむンが奜たし
い。
Fluoroolefin a, which is a monomer component constituting the fluoropolymer, contains at least one
Perhaloolefins having fluorine atoms, preferably all hydrogen atoms of the olefin are substituted with fluorine atoms and other halogen atoms, and perfluoroolefins are particularly preferred. Furthermore, from the viewpoint of polymerizability and properties of the produced polymer, fluoroolefins having 2 or 3 carbon atoms, particularly perfluoroolefins, are preferred.

かかるフルオロオレフむンの䟋ずしおは、 CF2CF2、CHFCF2、CH2CF2、CH2
CHF、CClFCF2、CHClCF2、CCl2CF2、
CClFCClF、CHFCCl2、CH2CClF、CCl2
CClF等のフルオロ゚チレン系、CF3CFCF2、
CF3CFCHF、CF3CHCF2、CF3CFCH2、
CF3CFCHF、CHF2CFCHF、CF3CH
CH2、CH3CFCF2、CH3CHCF2、CH3CF
CH2、CF2ClCFCF2、CF3CClCF2、CF3CF
CFCl、CF2ClCClCF2、CF2ClCFCFCl、
CFCl2CFCF2、CF3CClCClF、CF3CCl
CCl2、CClF2CFCCl2、CCl3CFCF2、
CF2ClCClCCl2、CFCl2CClCCl2、CF3CF
CHCl、CClF2CFCHCl、CF3CClCHCl、
CHF2CClCCl2、CF2ClCHCCl2、CF2ClCCl
CHCl、CCl3CFCHCl、CF21CFCF2、
CF2BrCHCF2、CF3CBrCHBr、CF2ClCBr
CH2C2BrCFCCl2、CF3CBrCH2、CF2CH
CHBr、CF2BrCHCHF、CF2BrCFCF2等
のフルオロプロペン系、CF3CF2CFCF2、
CF3CFCFCF3、CF3CHCFCF3、CF2
CFCF2CHF2、CF3CF2CFCH2、CF3CH
CHCF3、CF2CFCF2CH3、CF2CFCH2CH3
CF3CH2CHCH2、CF3CHCHCH3、CF2
CHCH2CH3、CH3CF2CHCH2、CFH2CH
CHCFH2、CH3CF2CHCH3、CH2
CFCH2CH3、CF3CF22CFCF2、CF3
CF23CFCF2、等の炭玠原子数以䞊のフル
オロオレフむン系を挙げるこずができる。
Examples of such fluoroolefins are CF2 = CF2 , CHF= CF2 , CH2 = CF2 , CH2 =
CHF, CClF= CF2 , CHCl= CF2 , CCl2 = CF2 ,
CClF=CClF, CHF= CCl2 , CH2 =CClF, CCl2
= Fluoroethylene type such as CClF, CF 3 CF = CF 2 ,
CF 3 CF=CHF, CF 3 CH=CF 2 , CF 3 CF=CH 2 ,
CF 3 CF=CHF, CHF 2 CF=CHF, CF 3 CH=
CH 2 , CH 3 CF=CF 2 , CH 3 CH=CF 2 , CH 3 CF=
CH 2 , CF 2 ClCF=CF 2 , CF 3 CCl=CF 2 , CF 3 CF
= CFCl, CF 2 ClCCl = CF 2 , CF 2 ClCF = CFCl,
CFCl 2 CF=CF 2 , CF 3 CCl=CClF, CF 3 CCl=
CCl 2 , CClF 2 CF=CCl 2 , CCl 3 CF=CF 2 ,
CF 2 ClCCl=CCl 2 , CFCl 2 CCl=CCl 2 , CF 3 CF=
CHCl, CClF 2 CF=CHCl, CF 3 CCl=CHCl,
CHF 2 CCl=CCl 2 , CF 2 ClCH=CCl 2 , CF 2 ClCCl
=CHCl, CCl 3 CF=CHCl, CF 21 CF=CF 2 ,
CF 2 BrCH=CF 2 , CF 3 CBr=CHBr, CF 2 ClCBr
CH 2 C 2 BrCFCCl 2 , CF 3 CBrCH 2 , CF 2 CH
= CHBr, CF 2 BrCH = CHF, CF 2 BrCF = fluoropropene such as CF 2 , CF 3 CF 2 CF = CF 2 ,
CF 3 CF=CFCF 3 , CF 3 CH=CFCF 3 , CF 2 =
CFCF 2 CHF 2 , CF 3 CF 2 CF=CH 2 , CF 3 CH=
CHCF 3 , CF 2 = CFCF 2 CH 3 , CF 2 = CFCH 2 CH 3
CF 3 CH 2 CH=CH 2 , CF 3 CH=CHCH 3 , CF 2 =
CHCH 2 CH 3 , CH 3 CF 2 CH=CH 2 , CFH 2 CH=
CHCFH 2 , CH 3 CF 2 CH=CH 3 , CH 2 =
CFCH 2 CH 3 , CF 3 (CF 2 ) 2 CF=CF 2 , CF 3
Examples include fluoroolefin systems having 4 or more carbon atoms, such as (CF 2 ) 3 CF=CF 2 .

これらの䞭では、前述の劂くフルオロ゚チレン
系及びフルオロプロペン系が奜たしく、ずくにテ
トラフルオロ゚チレンCF2CF2及びヘキサ
フルオロプロペンCF2CFCF3、クロロトリ
フルオロ゚チレンClFCCF2が奜適であり、
曎には安党性、取扱い性の面からヘキサフルオロ
プロペン、クロロトリフルオロ゚チレンが奜適で
ある。
Among these, as mentioned above, fluoroethylene and fluoropropene are preferred, particularly tetrafluoroethylene (CF 2 = CF 2 ), hexafluoropropene (CF 2 = CFCF 3 ), and chlorotrifluoroethylene (ClFC = CF 2 ). ) is preferred;
Furthermore, from the viewpoint of safety and ease of handling, hexafluoropropene and chlorotrifluoroethylene are preferred.

たた本考案においおフルオロオレフむンは、単
独で甚いるほかに耇数を混合しお甚いる態様も含
むこずは勿論である。
Furthermore, in the present invention, it goes without saying that fluoroolefins may be used alone or in combination.

ビニル゚ヌテルは、ビニル基ずアルキルシ
クロアルキルを含む基、アリヌルaryl基、
アラルキルaralkyl基等が゚ヌテル結合した
化合物であり、䞭でもアルキルビニル゚ヌテル、
ずくに炭玠原子数が以䞋、奜たしくは〜の
アルキル基ず結合したアルキルビニル゚ヌテルが
奜適である。曎にはアルキル基が鎖状のアルキル
ビニル゚ヌテルが最も奜適である。
Vinyl ether b includes a vinyl group, an alkyl (including cycloalkyl) group, an aryl group,
It is a compound in which aralkyl groups, etc. are bonded to ether, and among them, alkyl vinyl ether,
Particularly suitable are alkyl vinyl ethers bonded to alkyl groups having 8 or less carbon atoms, preferably 2 to 4 carbon atoms. Furthermore, alkyl vinyl ethers in which the alkyl group is in the form of a chain are most preferred.

かかるビニル゚ヌテルの䟋ずしおは、゚チルビ
ニル゚ヌテル、プロピルビニル゚ヌテル、む゜プ
ロピル゚ヌテル、ブチルビニル゚ヌテル、tert−
ブチルビニル゚ヌテル、ペンチルビニル゚ヌテ
ル、ヘキシルビニル゚ヌテル、む゜ヘキシルビニ
ル゚ヌテル、オクチルビニル゚ヌテル、−メチ
ル−−ペンチルビニル゚ヌテル等の鎖状アルキ
ルビニル゚ヌテル類、シクロペンチルビニル゚ヌ
テル、シクロヘキシルビニル゚ヌテル等のシクロ
アルキルビニル゚ヌテル類、プニルビニル゚ヌ
テル、−−−クロロプニルビニル゚
ヌテル、アリヌルビニル゚ヌテル類、ベンゞルビ
ニアラルキルビニル゚ヌテル、プネチルビニル
゚ヌテル等のアラルキルビニル゚ヌテル類を挙げ
るこずができる。
Examples of such vinyl ethers include ethyl vinyl ether, propyl vinyl ether, isopropyl ether, butyl vinyl ether, tert-
Chain alkyl vinyl ethers such as butyl vinyl ether, pentyl vinyl ether, hexyl vinyl ether, isohexyl vinyl ether, octyl vinyl ether, 4-methyl-1-pentyl vinyl ether, cycloalkyl vinyl ethers such as cyclopentyl vinyl ether, cyclohexyl vinyl ether, phenyl vinyl ether, o- , m-,p-chlorophenyl vinyl ether, aryl vinyl ethers, benzyl vinyl alkyl vinyl ether, phenethyl vinyl ether, and other aralkyl vinyl ethers.

これらの䞭ではずくに鎖状アルキルビニル゚ヌ
テル及びシクロアルキルビニル゚ヌテルが奜たし
く、曎にぱチルビニル゚ヌテル、プロピルビニ
ル゚ヌテル、ブチルビニル゚ヌテルが奜適であ
る。
Among these, chain alkyl vinyl ethers and cycloalkyl vinyl ethers are particularly preferred, and ethyl vinyl ether, propyl vinyl ether, and butyl vinyl ether are more preferred.

たた本考案においおビニル゚ヌテルは、単独で
甚いるほかに耇数混合しお甚いる態様も含むこず
は勿論である。
Furthermore, in the present invention, it goes without saying that the vinyl ether may be used alone or in combination.

有機珪玠化合物は、分子䞭にオレフむン性䞍
飜和結合及び加氎分解可胜な基をも぀ものであれ
ばよく、具䜓的には䞋蚘䞀般匏(1)〜(3)に瀺される
ものを䟋瀺するこずができる。
The organosilicon compound c may be one having an olefinic unsaturated bond and a hydrolyzable group in the molecule, and specifically, those shown in the following general formulas (1) to (3) are exemplified. Can be done.

R1R2SiY1Y2 (1) R1XSiY1Y2 (2) R1SiY1Y2Y3 (3) 匏䞭R1、R2はオレフむン性䞍飜和結合を有
し、炭玠、氎玠及び任意に酞玠からなり、各同䞀
たたは盞異なる基である。はオレフむン性䞍飜
和結合を有しない有機基であり、Y1Y2Y3は
各同䞀たたは盞異なる加氎分解可胜な基である。 R1、R2のより具䜓的な䟋ずしおは、ビニルア
ルリルallyl、ブテニル、シクロヘキセニル、
シクロペンタゞ゚ニルがあり、ずくに末端オレフ
むン性䞍飜和基が奜たしい。その他の奜たしい䟋
には、CH2CH−−CH23−の他末端䞍飜和
酞の゚ステル結合を有する CH2CH3COOCH23−、CH2CH3
COOCH22−−CH23−、 などの基を挙げるこずができる。これらの䞭では
ビニル基が最適である。の具䜓的な䟋ずしお
は、たずえば䟡の炭化氎玠基であるメチル、゚
チル、プロピル、テトラデシル、オクタデシル、
プニル、ベンゞル、トリルなどの基があり、た
たこれらの基は、ハロゲン眮換炭化氎玠基でもよ
い。
R 1 R 2 SiY 1 Y 2 (1) R 1 XSiY 1 Y 2 (2) R 1 SiY 1 Y 2 Y 3 (3) (In the formula, R 1 and R 2 have olefinic unsaturated bonds and , hydrogen and optionally oxygen, each of which is the same or different; X is an organic group having no olefinic unsaturated bond; Y 1 , Y 2 , Y 3 are each the same or different hydrolyzable ) More specific examples of R 1 and R 2 include vinylallyl, butenyl, cyclohexenyl,
Cyclopentadienyl is preferred, and terminal olefinically unsaturated groups are particularly preferred. Other preferred examples include CH2 =C(CH3)COO( CH2 ) 3- , CH2 =C( CH3 )COO( CH2 )3-, which has an ester bond of an unsaturated acid at the other end, CH2=CH-O-( CH2 ) 3- C ( CH3 )
COO( CH2 ) 2 -O-( CH2 ) 3- , Examples include groups such as. Among these, vinyl groups are most suitable. Specific examples of X include monovalent hydrocarbon groups such as methyl, ethyl, propyl, tetradecyl, octadecyl,
Groups include phenyl, benzyl, tolyl, etc., and these groups may also be halogen-substituted hydrocarbon groups.

Y1Y2Y3の具䜓䟋ずしおは、たずえばメト
キシ、゚トキシ、ブトキシ、メトキシ゚トキシの
ような、アルコキシ基、アルコキシアルコキシ
基、ホルミロキシ、アセトキシ、プロピオノキシ
のようなアシロキシ基、オキシムたずえば、−
ONCH32、−ONCHCH2C2H5および、−
ONC6H52、たたは眮換アミノ基およびア
リヌルアミノ基たずえば、−NHCH3、−NHC2H5
及び−NHC6H5などがあり、その他任意の加
氎分解し埗る有機基がある。
Specific examples of Y 1 , Y 2 and Y 3 include alkoxy groups such as methoxy, ethoxy, butoxy and methoxyethoxy, alkoxyalkoxy groups, acyloxy groups such as formyloxy, acetoxy and propionoxy, oximes such as -
ON=C( CH3 ) 2 , -ON = CHCH2C2H5 and -
ON=C( C6H5 ) 2 , or substituted amino and arylamino groups such as -NHCH3 , -NHC2H5
and -NH (C 6 H 5 ), and any other hydrolyzable organic groups.

奜たしく䜿甚される有機珪玠化合物は䞀般匏(3)
で衚される化合物であり、ずくに基Y1、Y2、Y3
が等しい有機珪玠化合物が適しおいる。これらの
䞭でもR1がビニロキシアルキル基CH2CH−
−CH2−たたはビニル基であり、Y1〜
Y3がアルコキシ基たたはアルコキシアルコキシ
基のものが奜たしく、たずえばビニロキシプロビ
ルトリメトキシシラン、ビニルトリメトキシシラ
ン、ビニルトリ゚トキシシラン、ビニルトリス
メトキシ゚トキシシランなどが䟋瀺できる。
しかしビニルメチルゞ゚トキシシラン、ビニルフ
゚ニルゞメトキシシランなども同様に甚いるこず
ができる。
Preferably used organosilicon compounds have general formula (3)
It is a compound represented by, especially the groups Y 1 , Y 2 , Y 3
Organosilicon compounds having the same values are suitable. Among these, R 1 is a vinyloxyalkyl group (CH 2 =CH-
O-( CH2 )n-) or a vinyl group, and Y1 ~
It is preferable that Y 3 is an alkoxy group or an alkoxyalkoxy group, such as vinyloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(methoxyethoxy)silane, and the like.
However, vinylmethyldiethoxysilane, vinylphenyldimethoxysilane, etc. can be used as well.

フツ玠系重合䜓における(a)〜(c)のモノマヌ成分
の含有割合は、(a)〜(c)の合蚈モル数を基準ずしお
(a)30〜70モル、(b)20〜60モル、(c)〜
80モル(a)(b)(c)100である、奜たしくは
(a)40〜60モル、(b)20〜50モル、(c)〜
25モルの範囲にある。
The content ratio of monomer components (a) to (c) in the fluorine-based polymer is based on the total number of moles of (a) to (c).
(a): 30-70 mol%, (b): 20-60 mol%, (c): 1-
80 mol% ((a)+(b)+(c)=100), preferably
(a): 40-60 mol%, (b): 20-50 mol%, (c): 1-
It is in the range of 25 mol%.

ここで(a)を30〜70モルずしたのは、30モル
以䞋であるず耐久性が悪く、70モル以䞊である
ず金属ぞの接着性が悪くなるからで(c)を〜80モ
ルずしたのはモル以䞋であるず硬化しにく
くなり、膜の圢成が困難で80モル以䞊であるず
安定性が悪くなるからである。
Here, (a) is 30 to 70 mol%, which means 30 mol%
If it is less than 1 mol%, the durability will be poor, and if it is more than 70 mol%, the adhesion to metal will be poor. This is because it is difficult to form a film, and stability deteriorates when the amount exceeds 80 mol%.

本考案で䜿甚するフツ玠重合䜓は、前蚘(a)〜(c)
の各モノマヌを呚知のラゞカル開始剀の存圚䞋
あるいは、䞍存圚のずきには加熱しお共重合
するこずによ぀お補造される。ここで(a)〜(c)の各
成分はいずれも重芁であり、たずえば(a)成分ず(c)
成分のみでは共重合が生じないが、(b)成分を加え
るこずによ぀お(a)、(b)、(c)の各成分が共重合す
る。
The fluoropolymers used in this invention are those listed in (a) to (c) above.
It is produced by copolymerizing each of the monomers in the presence of a well-known radical initiator (or by heating in its absence). Here, each component (a) to (c) is important, for example, component (a) and (c)
Copolymerization does not occur when the components alone are used, but when component (b) is added, components (a), (b), and (c) are copolymerized.

共重合に甚いるラゞカル開始剀ずしおは公知の
皮々のものが䜿甚できる。具䜓的には有機ペルオ
キシド、有機ペル゚ステルたずえばベンゟむルペ
ルオキシド、ゞクロルベンゟむルペルオキシド、
ゞクミルペルオキシド、ゞ−tert−ブチルペルオ
キシド、−ゞメチル−−ゞペルオ
キシベンゟ゚ヌトヘキシン−、−ビス
tert−ブチルペルオキシむ゜プロピルベンれ
ン、ラりロむルペルオキシド、tert−ブチルペル
アセテヌト、−ゞメチル−−ゞ
tert−ブチルペルオキシヘキシン−、
−ゞメチル−−ゞtert−ブチルペルオ
キシヘキサン、tert−ブチルペルベンゟ゚ヌ
ト、tert−ブチルペルプニルアセテヌト、tert
−ブチルペルむ゜プチレヌト、tert−ブチルベル
−sec−オクト゚ヌト、tert−ブチルペルピバレ
ヌト、クミルペルピバレヌト、tert−ブチルペル
ゞ゚チルアセテヌトなど、その他アゟ化合物たず
えばアゟビス−む゜ブチルニトリル、ゞメチルア
ゟむ゜ブチレヌトなどがある。これらの䞭ではゞ
クミルペルオキシド、ゞ−tert−ブチルペルオキ
シド、−ゞメチル−−ゞtert−ブ
チルペルオキシヘキシン−、−ゞメチ
ル−−ゞtert−ブチルペルオキシヘキ
サン、−ビスtert−ブチルペルオキシむ
゜プロピルベンれンなどのゞアルキルペルオキ
シドが奜たしい。
Various known radical initiators can be used for copolymerization. Specifically, organic peroxides, organic peresters such as benzoyl peroxide, dichlorobenzoyl peroxide,
Dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(peroxybenzoate) hexyne-3,1,4-bis(tert-butylperoxyisopropyl)benzene, lauroyl peroxide, tert-butyl Peracetate, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3,2,
5-dimethyl-2,5-di(tert-butylperoxy)hexane, tert-butyl perbenzoate, tert-butyl perphenylacetate, tert
-butyl perisoptylate, tert-butylber-sec-octoate, tert-butyl perpivalate, cumyl perpivalate, tert-butyl perdiethyl acetate, etc., and other azo compounds such as azobis-isobutylnitrile, dimethyl azoisobutyrate. and so on. Among these, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3,2,5-dimethyl-2,5-di(tert- Dialkyl peroxides such as butylperoxy)hexane and 1,4-bis(tert-butylperoxyisopropyl)benzene are preferred.

共重合は有機溶媒からなる反応媒䜓䞭で行われ
る。ここで䜿甚する溶媒ずしおは、ベンれン、ト
ル゚ン、キシレンなどの芳銙族炭化氎玠、−ヘ
キサン、シクロヘキサン、−ヘプタンなどの脂
肪族炭化氎玠、クロロベンれン、ブロモベンれ
ン、ペヌドベンれン、−ブロモトル゚ンなどの
ハロゲン化芳銙族炭化氎玠、テトラクロロメタ
ン、−トリクロロ゚タン、テトラクロ
ロ゚チレン、−クロロブタンなどのハロゲン化
脂肪族炭化氎玠等を挙げるこずができる。
The copolymerization takes place in a reaction medium consisting of an organic solvent. The solvents used here include aromatic hydrocarbons such as benzene, toluene, and xylene, aliphatic hydrocarbons such as n-hexane, cyclohexane, and n-heptane, and chlorobenzene, bromobenzene, iodobenzene, and o-bromotoluene. Examples include halogenated aromatic hydrocarbons, halogenated aliphatic hydrocarbons such as tetrachloromethane, 1,1,1-trichloroethane, tetrachloroethylene, and 1-chlorobutane.

共重合は、䞊蚘溶媒䞭ラゞカル開始剀をモノマ
ヌの合蚈モル数に察しおモル比で102〜×103の
範囲で添加しお行う。たた重合枩床は−30〜200
℃、奜たしくは20〜100℃、重合圧力は〜100
Kgcm2・、奜たしくは〜50Kgcm2・であ
る。
Copolymerization is carried out by adding the radical initiator in the above solvent in a molar ratio of 10 2 to 2×10 3 based on the total number of moles of monomers. Also, the polymerization temperature is -30 to 200
℃, preferably 20~100℃, polymerization pressure 0~100℃
Kg/cm 2 ·G, preferably 0 to 50 kg/cm 2 ·G.

このようにしお埗られたフツ玠系重合䜓の分子
量は、テトラヒドロフランを溶媒にし、分子量既
知の単分散ポリスチレンを暙準物質ずしお甚い
お、ゲル・パミ゚ヌシペンクロマトグラフ法
GPCにより枬定しお求めた数平均分子量
Mnが通垞3000〜200000であるこずが望たし
く、奜たしくは5000〜100000の範囲にある。分子
量が300未満では、䞀般に被芆局の圢成が困難で
あり、200000を越えるず溶剀可溶剀性に乏しい堎
合が倚い。そしお、前蚘のような組成割合ずここ
で蚘述した分子量を採るこずにより溶剀可性ずな
り、たた、埌述する方法で硬化させた埌では耐溶
剀性、耐薬品性、耐熱性、耐候性、さらに機械的
性質の優れたものずなる。フツ玠系重合䜓の別の
性質ずしお、非晶性たたは䜎結晶性、倚くは非晶
性であるこずが掲げられる。䞀般には線による
結晶床が、瀺差走査型熱量蚈DSCで融
点が芳察されないものが倚い。したが぀お透明性
が良奜である。
The molecular weight of the fluoropolymer thus obtained was determined by gel permeation chromatography (GPC) using tetrahydrofuran as a solvent and monodisperse polystyrene of known molecular weight as a standard substance. It is desirable that the number average molecular weight (Mn) is usually 3,000 to 200,000, preferably 5,000 to 100,000. If the molecular weight is less than 300, it is generally difficult to form a coating layer, and if it exceeds 200,000, solvent solubility is often poor. By adopting the above composition ratio and the molecular weight described here, it becomes solvent-compatible, and after being cured by the method described below, it has excellent solvent resistance, chemical resistance, heat resistance, weather resistance, and even mechanical resistance. It has excellent physical properties. Another property of fluorine-based polymers is that they are amorphous or have low crystallinity, and many are amorphous. In general, the degree of crystallinity measured by X-rays is 0%, and in many cases no melting point can be observed using a differential scanning calorimeter (DSC). Therefore, transparency is good.

ガラス転移枩床Tgは、詊料を−120℃に冷
华したのち10℃minの昇枩速床でDSCにより枬
定するず、通垞−60〜20℃、倚くが−40〜
℃の範囲にある。
The glass transition temperature (Tg) is usually -60 to +20°C, often -40 to +5 when measured by DSC at a heating rate of 10°C/min after cooling the sample to -120°C.
in the range of ℃.

本考案で䜿甚するフツ玠系重合䜓には有機顔料
などずの芪和性をより向䞊させるため、分子鎖䞭
にカルボキシル蓋を導入しおもよい。その䞀䟋ず
しお、䞍飜和カルボン酞及びその誘導䜓をグラフ
ト重合する方法があり、このような目的で䜿甚す
る䞍飜和カルボン酞類の䟋ずしおは、アクリル
酞、メタクリル酞、α−゚チルアクリル酞、マレ
むン酞、フマヌル酞、むタコン酞、シトラコン
酞、テトラヒドロフタル酞、メチルテトラヒドロ
フタル酞、゚ンドシス−ビシクロ〔〕
ヘプト−−゚ン−−ゞカルボン酞ナゞ
ツク酞、メチル−゚ンドシス−ビシクロ〔
〕ヘプト−−゚ン−−ゞカルボン
酞メチルナゞツク酞などの䞍飜和カルボン
酞、該䞍飜和カルボン酞のハラむド、アミド、む
ミド、酞無氎物、゚ステルすなわち塩化マレニ
ル、マレむミド、無氎マレむン酞、無氎シトラコ
ン酞、マレむン酞モノメチル、マレむン酞ゞメチ
ルなどがある。
A carboxyl cap may be introduced into the molecular chain of the fluorine-based polymer used in the present invention in order to further improve the affinity with organic pigments and the like. One example is a method of graft polymerizing unsaturated carboxylic acids and their derivatives. Examples of unsaturated carboxylic acids used for this purpose include acrylic acid, methacrylic acid, α-ethyl acrylic acid, maleic acid, Fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid, endocys-bicyclo[2,2,1]
Hept-5-ene-2,3-dicarboxylic acid (nadic acid), methyl-endocys-bicyclo[2,
2,1] Unsaturated carboxylic acids such as hept-5-ene-2,3-dicarboxylic acid (methylnadic acid), halides, amides, imides, acid anhydrides, esters of the unsaturated carboxylic acids, i.e. maleyl chloride, maleimide, Examples include maleic anhydride, citraconic anhydride, monomethyl maleate, and dimethyl maleate.

以䞊のような、フツ玠系重合䜓は、有機溶剀に
垞枩においお可溶であり、たずえばベンれン、ト
ル゚ン、キシレンのような芳銙属炭化氎玠系類ア
セトン、メチル゚チルケトンのようなケトン類、
ゞメチル゚ヌテル、ゞ゚チレ゚ヌテル、ゞプロピ
ル゚ヌテル、のような゚ヌテル類、メタヌル、゚
タノヌルのようなアルコヌル類、トククロロ゚タ
ン、ゞクロロ゚タン、クロロベンれンのようなハ
ロゲン化炭化氎玠類などに溶解する。
The above-mentioned fluorine-based polymers are soluble in organic solvents at room temperature, such as aromatic hydrocarbons such as benzene, toluene, and xylene, acetone, ketones such as methyl ethyl ketone,
It dissolves in ethers such as dimethyl ether, diethylether, and dipropyl ether, alcohols such as methanol and ethanol, and halogenated hydrocarbons such as tokuchloroethane, dichloroethane, and chlorobenzene.

したが぀お、フツ玠系重合䜓の有機溶剀の溶液
を甚いお、スプレヌ、ハケ塗り、ロヌルコヌタヌ
等の方法で、前述の金属溶接郚の衚面にフツ玠重
合䜓を塗垃しお、也燥させるこずにより、本考案
の溶接郚構造が埗られる。
Therefore, using a solution of a fluoropolymer in an organic solvent, the fluoropolymer is applied to the surface of the metal weld by a method such as spraying, brushing, or roll coating, and then dried. As a result, the welded part structure of the present invention is obtained.

ずころで、フツ玠系重合䜓は、有機珪玠化合物
に由来する加氎分解可胜由有機基を有しおいる
ので、氎分に晒されるこずにより重合䜓の分子鎖
間に橋かけ反応が起こり硬化する。したが぀お、
倧気䞭の湿気によ぀おも圓然のこずながら架橋が
起こり埗る。フツ玠系重合䜓単独でも架橋が進む
こずは明癜であるが、溶接郚に塗垃されたフツ玠
系重合䜓の皮膜が迅速に硬化するように、シラノ
ヌル瞮合觊媒を添加するのが奜たしい。
By the way, since the fluorine-based polymer has a hydrolyzable organic group derived from the organosilicon compound C, when exposed to moisture, a cross-linking reaction occurs between the molecular chains of the polymer and the polymer is cured. Therefore,
Naturally, crosslinking can also occur due to atmospheric moisture. Although it is clear that crosslinking will proceed even if the fluoropolymer is used alone, it is preferable to add a silanol condensation catalyst so that the fluoropolymer film applied to the welded area is rapidly cured.

この堎合、フツ玠系重合䜓を溶解した有機溶剀
溶液にシラノヌル瞮合觊媒を予め添加しおおき、
これを溶接郚に塗垃するず有機溶剀が蒞散しお空
気䞭の湿分ず接觊しだすず同時に硬化反応が起こ
り、被芆局の皮膜硬化が起こる。
In this case, a silanol condensation catalyst is added in advance to an organic solvent solution in which a fluoropolymer is dissolved.
When this is applied to a welded area, the organic solvent evaporates and a curing reaction occurs at the same time as it comes into contact with moisture in the air, causing the coating layer to harden.

シラヌル觊媒は公知のものが適甚できるが、た
ずえばゞブチル錫ゞラりレヌト、酢酞第錫、オ
クタン酞第錫、ナフテン酞鉛、−゚チルヘキ
サン酞鉄、ナフテン酞コバルトの劂きカルボン酞
金属塩、有機塩基たずえば゚チルアミン、ヘキシ
ルアミン、ゞブチルアミン、ピペリゞンなど、鉱
酞および有機脂肪酞の劂き酞などである。適圓な
る觊媒はカルボン酞のアルキル錫塩であ぀お、た
ずえばゞブチル錫ゞラりレヌト、ゞブチル錫ゞオ
クト゚ヌト、ゞプチル錫ゞアセテヌトである。
Known silal catalysts can be used, such as carboxylic acid metal salts such as dibutyltin dilaurate, stannous acetate, stannous octoate, lead naphthenate, iron 2-ethylhexanoate, cobalt naphthenate, and organic bases. Examples include acids such as ethylamine, hexylamine, dibutylamine, piperidine, mineral acids and organic fatty acids. Suitable catalysts are alkyltin salts of carboxylic acids, such as dibutyltin dilaurate, dibutyltin dioctoate, diptyltin diacetate.

橋かけ反応は、垞枩〜40℃で十分進行す
るが、溶接郚の枩床がただ高いうちに塗垃しお、
高枩状態に被芆局を圢成しお架橋反応を促進させ
おもよい。たた、被芆局の厚さは通垞25Όない
しmm皋床が通垞であり、ずくに50〜500Ό皋
床が奜たしい。なお、溶接郚衚面に察するフツ玠
系重合䜓の密着性あるいは接着性向䞊のため、溶
接郚衚面にプラむマヌの塗垃や脱脂凊理等の衚面
凊理を斜しおおくのが奜たしい。プラむマヌずし
おはナニストヌル−䞉井石油化孊工業株匏䌚
瀟補等が奜適である。たた、他の奜適なプラむ
マヌずしおは、チタンテトラブトキシド䟋えば
束本補薬株匏䌚瀟補オルガチツクスTA−25な
どのチタン系プラむマヌや東芝シリコヌン株匏䌚
瀟補トスプラむムなどのシラン系プラむマヌが
ある。
The cross-linking reaction progresses well at room temperature (0 to 40℃), but if the weld is applied while the temperature is still high,
A coating layer may be formed at a high temperature to promote the crosslinking reaction. The thickness of the coating layer is usually about 25 ÎŒm to 2 mm, and preferably about 50 to 500 ÎŒm. In order to improve the adhesion or adhesion of the fluoropolymer to the surface of the weld, it is preferable that the surface of the weld is subjected to a surface treatment such as coating with a primer or degreasing. As the primer, Unistol-Q (manufactured by Mitsui Petrochemical Industries, Ltd.) and the like are suitable. Further, other suitable primers include titanium-based primers such as titanium tetrabutoxide (for example, Orgatics TA-25 manufactured by Matsumoto Pharmaceutical Co., Ltd.) and silane-based primers such as Tosprime A manufactured by Toshiba Silicone Corporation.

そしお、硬化埌塗垃埌14日攟眮埌のフツ玠
系重合䜓からなる被芆局はJIS  54001979
6.16による鉛筆硬床が通垞3H〜2B、倚くは〜
の範囲にあり、JIS  19796.16による耐
屈曲性が通垞mmφ、倚くがmmφに合栌する。
The coating layer made of fluorine-based polymer after curing (after being left for 14 days after application) conforms to JIS K 5400 (1979).
Pencil hardness according to 6.16 is usually 3H to 2B, often H to
It is in the B range, and the bending resistance according to JIS K (1979) 6.16 usually passes 3 mmφ, and most pass 2 mmφ.

なお、溶接郚にフツ玠系重合䜓を塗垃する堎
合、顔料や染料ずい぀たものを配合しおもよく、
曎に必芁に応じお通垞合成暹脂に配合される各皮
添加剀を配合しおもよい。
In addition, when applying a fluorine-based polymer to the welded area, pigments and dyes may be added.
Furthermore, various additives that are usually blended into synthetic resins may be blended as necessary.

〔実斜䟋〕〔Example〕

以䞋、本考案の内容を奜適な䟋でも぀お説明す
るが、ずくに断りのない限り本考案はこれらの䟋
に制限されるものではなく、本考案の目的に損わ
ない範囲でいかなる態様も可胜である。
The contents of the present invention will be explained below using preferred examples, but unless otherwise specified, the present invention is not limited to these examples, and any embodiments may be made without detracting from the purpose of the present invention. be.

〈実斜䟋 〉 内容積300c.c.のステンレス補撹拌機付オヌトク
レヌブにベンれン80、ブチルビニル゚ヌテル
BVE25.2、トリメトキシビニルシラン
TMVS7.1、過酞化ゞラりロむルを仕
蟌み、アセトン、ドラむアむスによる固化、脱気
を行い、系内の酞玠を陀去する。その埌、ヘキサ
フルオロプロペンHFP45をオヌトクレヌ
ブ䞭に導入し、昇枩する。オヌトクレヌブ内の枩
床が65℃に達した時点での圧力は8.1Kgcm2であ
぀た。撹拌䞋に時間反応を続け、圧力が4.6
Kgcm2に達した時点でオヌトクレヌブを氎冷し反
応を停止した。冷华埌、未反応モノマヌを远い出
し、オヌトクレヌブを開攟し、反応液をずり出し
た。濃瞮埌、ベンれンメタノヌル混合溶媒で掗浄
し、再び濃瞮、也燥を行぀た。ポリマヌ収量は60
であ぀た。
<Example 1> 80 g of benzene, 25.2 g of butyl vinyl ether (BVE), 7.1 g of trimethoxy vinyl silane (TMVS), and 1 g of dilauroyl peroxide were placed in a stainless steel autoclave with an internal volume of 300 c.c. and equipped with a stirrer, followed by acetone and dry ice. Solidification and degassing are performed to remove oxygen from the system. Thereafter, 45 g of hexafluoropropene (HFP) is introduced into the autoclave and the temperature is raised. When the temperature inside the autoclave reached 65°C, the pressure was 8.1 Kg/cm 2 . The reaction continued for 8 hours with stirring until the pressure reached 4.6
When the temperature reached Kg/cm 2 , the autoclave was cooled with water to stop the reaction. After cooling, unreacted monomers were expelled, the autoclave was opened, and the reaction solution was taken out. After concentration, the mixture was washed with a benzene-methanol mixed solvent, concentrated again, and dried. Polymer yield is 60
It was hot at g.

埗られたポリマヌのGPCによる数平均分子量
は1.0×104であり、ガラス転移点は−14℃であ぀
た。
The number average molecular weight of the obtained polymer by GPC was 1.0×10 4 and the glass transition point was -14°C.

この共重合䜓の組成分析を元玠分析及びNMR
を甚いお行぀たずころHFPBVETMVS
484012モル比であ぀た。
The compositional analysis of this copolymer was performed using elemental analysis and NMR.
HFP/BVE/TMVS=
The molar ratio was 48/40/12.

このようにしお埗た重合䜓Kg及びテトラメチ
ルオルトシリケヌト0.25Kgをキシレン3.3Kgに溶
解し、さらに、ゞブチル錫ゞりラレヌト
DBTDLを7.9加えたものを準備した。
A solution was prepared in which 5 kg of the polymer thus obtained and 0.25 kg of tetramethylorthosilicate were dissolved in 3.3 kg of xylene, and 7.9 g of dibutyltin diurarate (DBTDL) was added thereto.

䞀方、第図に瀺すように、端郚を起立させた
䞀察のステンレス鋌板を、アルゎンガスを甚い
たむナヌトガスアヌク溶接で溶接し、この溶接郚
に゚ポキシ系プラむマヌを塗垃した埌、䞊蚘のフ
ツ玠系重合䜓のトル゚ン溶液を塗垃し、垞枩䞋で
自然也燥させるこずによ぀お、衚面にフツ玠重合
䜓からなる被芆局厚さ55Όを有する溶接郚
構造を圢成した。
On the other hand, as shown in Fig. 1, a pair of stainless steel plates 3 with their ends erected are welded by inert gas arc welding using argon gas, and after applying an epoxy primer to this welded part, the above-mentioned foot A toluene solution of a base polymer was applied and air-dried at room temperature to form a weld structure having a coating layer (thickness: 55 ÎŒm) made of a fluoropolymer on the surface.

この被芆局の光沢保持率をJIS−−5400に基
づいお枬定した。その結果3600時間埌の光沢保持
率は96ず優れた性胜を瀺した。
The gloss retention rate of this coating layer was measured based on JIS-K-5400. As a result, the gloss retention rate after 3600 hours was 96%, showing excellent performance.

〈実斜䟋 〉 実斜䟋ず同様にしお−ブチルビニル゚ヌテ
ルBVE、゚チルビニル゚ヌテルEVE、ト
リメトキシビニルシランTMVS、クロロトリ
フルオロ゚チレンCTFE、過酞化ゞラりロむ
ルDLPOを甚いお重合し、重合䜓を埗た。
<Example 2> In the same manner as in Example 1, n-butyl vinyl ether (BVE), ethyl vinyl ether (EVE), trimethoxyvinylsilane (TMVS), chlorotrifluoroethylene (CTFE), and dilauroyl peroxide (DLPO) were used. Polymer B was obtained by polymerization.

この重合䜓のGPC換算数平均分子量は0.85×
104でありガラス転移点は−℃であ぀た。
The GPC equivalent number average molecular weight of this polymer B is 0.85×
10 4 and the glass transition point was -8°C.

たた、重合䜓の組成はモル比でCTFE
EVEBVETMVS4838であ぀
た。
In addition, the composition of polymer B is CTFE/
EVE/BVE/TMVS=48/38/7/7.

重合䜓B5Kgをトル゚ン2.25Kgに溶解し、テト
ルメチルオルトシリケヌト〔コルコヌト株メ
チルシリケヌト39〕0.25Kg、ゞラりリン酞ゞブチ
ル錫を加えた液を調敎した。
A solution was prepared by dissolving 5 kg of Polymer B in 2.25 kg of toluene and adding 0.25 kg of tetolmethyl orthosilicate (Methyl Silicate 39, manufactured by Colcoat Co., Ltd.) and 8 g of dibutyltin dilaurate.

これを実斜䟋ず同様にしお溶接郚に塗垃し、
被芆局20Ό厚を圢成した。
Apply this to the welded area in the same manner as in Example 1,
A coating layer (20 ÎŒm thick) was formed.

この被芆局の光沢保持率を実斜䟋ず同様に枬
定した結果、3600時間埌の光沢保持率は96ず優
れた性胜を瀺した。
The gloss retention rate of this coating layer was measured in the same manner as in Example 1. As a result, the gloss retention rate after 3600 hours was 96%, showing excellent performance.

〔考案の効果〕 本考案によれば、溶接郚をフツ玠系重合䜓を䞻
成分ずする被芆局で芆぀たので、耐食性、耐薬品
性、耐氎性、などの耐久性に優れた金属の溶接郚
構造が埗られる。
[Effects of the invention] According to the invention, since the welded part is covered with a coating layer mainly composed of a fluorine-based polymer, it is possible to weld metals with excellent durability such as corrosion resistance, chemical resistance, and water resistance. The partial structure is obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第図は本考案に係る溶接郚構造の䞀䟋を瀺す
断面図、第図は溶接郚構造の他の䟋を瀺す断面
図、第図はオヌステナむト系ステンレス鋌の溶
接熱圱響郚の構造を瀺す断面図である。   溶接郚、  被芆局。
Fig. 1 is a sectional view showing an example of the weld structure according to the present invention, Fig. 2 is a sectional view showing another example of the weld structure, and Fig. 3 is a sectional view showing the structure of the weld heat affected zone of austenitic stainless steel. FIG. 1... Welded part, 2... Covering layer.

Claims (1)

【実甚新案登録請求の範囲】 (1) 金属の溶接郚を、 (a) フルオロオレフむン、 (b) ビニル゚ヌテル、 (c) オレフむン性䞍飜和結合及び加氎分解可胜
な基を持぀有機珪玠化合物、 ずから実質的に構成される共重合䜓であ぀
お、少なくずも䞀郚が架橋されおなるフツ玠
系重合䜓を䞻成分ずする被芆局で芆぀たこず
を特城ずするフツ玠系重合䜓の被芆局を有す
る金属溶接郚構造。 (2) 前蚘フツ玠系重合䜓の架橋がシラノヌル觊媒
の存圚䞋で行なわれるこずを特城ずする実甚新
案登録請求の範囲第項蚘茉のフツ玠系重合䜓
の被芆局を有する金属溶接郚構造。
[Claims for Utility Model Registration] (1) A metal welded part made of (a) a fluoroolefin, (b) a vinyl ether, (c) an organosilicon compound having an olefinic unsaturated bond and a hydrolyzable group; A coating layer of a fluorine-containing polymer, characterized in that the coating layer is a copolymer consisting essentially of a fluorine-containing polymer and is covered with a coating layer whose main component is a fluorine-containing polymer which is at least partially crosslinked. Metal welded structure with. (2) A metal welded structure having a coating layer of a fluoropolymer according to claim 1, wherein the crosslinking of the fluoropolymer is carried out in the presence of a silanol catalyst. .
JP9399686U 1986-06-19 1986-06-19 Expired JPH0243847Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9399686U JPH0243847Y2 (en) 1986-06-19 1986-06-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9399686U JPH0243847Y2 (en) 1986-06-19 1986-06-19

Publications (2)

Publication Number Publication Date
JPS63110540U JPS63110540U (en) 1988-07-15
JPH0243847Y2 true JPH0243847Y2 (en) 1990-11-21

Family

ID=30957049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9399686U Expired JPH0243847Y2 (en) 1986-06-19 1986-06-19

Country Status (1)

Country Link
JP (1) JPH0243847Y2 (en)

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