IziPhumo zeRhafu yokuPholisa kwiTape ye-PTFE

Njengomvelisi woqobo we-PTFE iiteyiphu zobushushu obuphezulu, i-Jiangsu Aokai New Materials apha ichaza iimpembelelo zeendlela zokupholisa kunye namazinga okupholisa ekusebenzeni kweeteyiphu zobushushu obuphezulu be-PTFE.

I. Undoqo we-PTFE Crystallization Iimpawu kunye noLawulo lweReyithi lokuPholisa

I-PTFE substrate ye-tape yobushushu obuphezulu ephilisiwe yeyepolymer ye-semi-crystalline, ehamba ngokukhawuleza ngekristali ngexesha lokupholisa emva kokupholisa. Ngokusisiseko, izinga lokupholisa liyinkqubo ephambili yeparameter yokulawula i-crystallinity ye-PTFE ye-tape yobushushu obuphezulu: ukupholisa okucothayo kukhokelela kwi-crystallinity ephezulu, ngelixa ukupholisa ngokukhawuleza kubangela ukuba i-crystallinity ephantsi.

II. Iziphumo zokupholisa okucothayo kwi-PTFE iTapes zobushushu obuphezulu

Impembelelo kuxinzelelo lwangaphakathi  Ukupholisa okucothayo kunokunciphisa ngokufanelekileyo uxinzelelo lwe-thermal olushiyekileyo ngaphakathi kwiteyiphu. Xa i-tape ipholile ngokwemvelo ngaphakathi kwesithando somlilo, i-PTFE matrix kunye ne-glass fibre skeleton zinexesha elaneleyo lokulungelelanisa ukuhlukana kwe-shrinkage ngokusebenzisa ukuphumla kwe-molecular chain, ukuphepha ukuxinwa koxinzelelo lwendawo.

Inkqubo eyamkelwa ngokubanzi kukupholisa itheyiphu ngokwendalo kwiziko ukuya kwi-150-200℃ ngaphambi kokuyikhuphela ukupholisa umoya. Le nkqubo icothayo yokupholisa inciphisa uxinzelelo lwangaphakathi ngokufanelekileyo kwaye ithintele ukugquma i-delamination kunye nokuqhekeka.

Impembelelo kuZinzo oluDimensional  Ukupholisa okucothayo kuphucula kakhulu uzinzo lwe-dimensional. Ngexesha lokupholisa okucothayo, amatyathanga emolekyuli e-PTFE alungelelanisa kwiilethi zekristale eziqhelekileyo ngokwaneleyo, zenza ikristale ephezulu kunye neenkozo zekristale eziphuhliswe kakuhle, eziqinisekisa imilinganiselo yokugqibela.

Ukucutha kancinci kwe-thermal kuya kwenzeka phantsi kobushushu obuphezulu ekusetyenzisweni kwangempela, ngoko kuyacetyiswa ukuba ugcine umda we-1% -2% ngexesha lokusetyenziswa. Ukupholisa okucothayo kuvumela ukushwabana okuzinzileyo kunye noguquko oluncinci lwentsalela.

Impembelelo kwi-Adhesive Performance  Ukupholisa okucothayo kuneziphumo ezimbini kwipropathi yokuncamathela. Kwelinye icala, ivumela umaleko wokuncamathelisa ukuba ugqibezele ukudibanisa umnqamlezo kunye nokuphumla koxinzelelo ngokupheleleyo, kugcinwe amandla okubopha okuzinzile. Ngakolunye uhlangothi, i-crystallinity ephezulu yonyusa ubulukhuni bomphezulu we-PTFE substrate, ibangela uxinzelelo olugxininisiweyo kwi-bonding interface phantsi kwamandla okuxobula.

III. Iziphumo zokuPholisa ngokukhawuleza kwi-PTFE iTapes zobushushu obuphezulu

     Impembelelo kuxinzelelo lwangaphakathi  Ukupholisa ngokukhawuleza ngoyena nobangela woxinzelelo olugqithisileyo lwangaphakathi. Ukucima ngokuthe ngqo emva kokuba sintering kudala umahluko omkhulu wobushushu phakathi kwe-PTFE matrix kunye nesakhelo seglasi yefibre, ivelisa uxinzelelo olushwabeneyo ngoko nangoko kwaye yenze lula iintanda ezicolekileyo.

Uluhlu lwangaphezulu luyancipha kwaye luqina ngokukhawuleza ngelixa i-layer yangaphakathi ihlala yandiswa, yenza imeko yoxinzelelo lwe-thermal yoxinzelelo lwangaphandle kunye nokunyanzeliswa kwangaphakathi, okubangela ngokuthe ngqo ukuqhekeka kwe-tape.

Impembelelo kwi-Dimensional Stability  Ukupholisa ngokukhawuleza kutshintsha i-crystallization peak kwiqondo lokushisa elisezantsi kunye nokunciphisa i-crystallinity kunye nesakhiwo sekristale esingaphelelanga. Iteyiphu ihlala kwindawo enomkhenkce engalinganiyo emva kokucima. Icrystallization yesibini kunye ne-post-shrinkage inokwenzeka phantsi kotshintsho olulandelayo lobushushu, olukhokelela ekuphambukeni kancinci kancinci.

Impembelelo kwi-Adhesive Performance  Ukupholisa ngokukhawuleza kuthintela ukudibanisa okupheleleyo kweeleya ezincamathelayo. I-adhesive iyakhenkcezwa ngaphambi kokuba yenze inethiwekhi edibeneyo edibeneyo, ekhokelela ekunciphiseni amandla okudibanisa kunye nokuxhathisa ubushushu.

Ngaphantsi kokuphindaphindwa kwebhayisikile ebandayo kunye neshushu, umahluko wokwanda kwe-thermal phakathi kwe-PTFE substrate kunye ne-adhesive layer ivelisa uxinzelelo oluphakathi kobuso, ukukhawulezisa ukuguga okunamathelayo kunye nokudibanisa, kunye nokunciphisa kakhulu ukuqina kwe-viscosity.

IV. Ukuthelekiswa kweendlela ezahlukeneyo zokupholisa

 

Ngokubanzi, ukupholisa okucothayo kunye nokufanayo ngumgaqo osisiseko wonyango lwasemva kokunyanga kwe-PTFE iiteyipu zobushushu obuphezulu. Kuyacetyiswa ukuba kuthathwe ukupholisa kwendalo esithandweni emva kokutshiza, kwaye ukhuphe iiteyiphu zokupholisa umoya kwiqondo lobushushu begumbi emva kokuba iqondo lobushushu lehla ngaphantsi kwe-150–200℃. Ukupholisa okungalinganiyo ngexesha lemveliso kuya kubangela ukucotha kwaye ekugqibeleni konakalise umgangatho wemveliso.

Lo mxholo ungentla unikwe ngu I-Jiangsu Aokai yeZixhobo eziNtsha zeTekhnoloji Co., Ltd.

Ukuba ufuna ukwazi iparameters eneenkcukacha, iimeko zesicelo kunye nezisombululo ezilungiselelwe uthotho lweemveliso zethu ezigcweleyo kubandakanya i-PTFE ilaphu lobushushu obuphezulu, iteyiphu yobushushu obuphezulu be-PTFE, ibhanti le-mesh elinobushushu obuphezulu be-PTFE, ibhanti lomatshini wokuthunga elingenamthungo, ilaphu le-PTFE elicalanye, ubushushu obuphezulu obuphezulu obunganyangekiyo, ibhanti lokuhambisa i-fiberglass kunye nobushushu obuphezulu.

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