Ke Eng e Bakang Ho phatloha ho Ts'ebetso ea PTFE Impregnation?

Joaloka moetsi oa litsebi tsa mohloli oa masela a mocheso o phahameng oa PTFE, Jiangsu Aokai New Materials e tla hlalosa lisosa tsa ho phunyeha ha lesela la fiber fiber ka mor'a ho kenngoa ka PTFE (polytetrafluoroethylene) emulsion. Ena ke taba e tloaelehileng ea mokhoa oa ho etsa lintho tse entsoeng ka motsoako, tse atisang ho etsahala nakong ea ho omisa (ho tlosoa ha mongobo le li-surfactants) kapa mocheso o phahameng oa mocheso (ho qhibiliha likaroloana tsa PTFE ka filimi e tsoelang pele).

1. Phapang e Feteletseng ea Li-Coefficients tsa Katoloso ea Thermal

Sena ke sesosa sa mantlha sa 'mele.

Ho na le phapang e kholo ho li-coefficients tsa katoloso ea mocheso lipakeng tsa fiber ea khalase le PTFE:katoloso e lekanang ea fiber ea khalase e batla e le 5×10⁻⁶/℃ , athe ea PTFE e ka ba 100×10⁻⁶/℃ ho isa ho 200×10⁻⁶  makhetlo a 2/2).

Nakong ea ho pholisa (ho tloha mochesong oa sintering oa hoo e ka bang 380℃–400℃ ho ea tlase ho mocheso oa kamore), PTFE e honyela haholo ho feta moralo oa fiber ea khalase. Kaha lesela la fiber ea khalase le sebetsa e le masapo a thata, PTFE e hatelloa nakong ea ho honyela, e baka khatello e matla ea mocheso kahare. Ha khatello ena e feta matla a thata a filimi ea PTFE kapa matla a ho kopanya sefahleho pakeng tsa PTFE le fiber ea khalase, ho phatloha ho etsahala ho lokolla khatello ea kelello.

2. Taolo e Fosahetseng ea Mekhoa ea ho Omisa le ea Sintering

Mekhahlelo ea ho futhumatsa ea thepa e kentsoeng e ama ka kotloloho ho phatloha:

·  Sekhahla sa ho futhumatsa ka lebelo le feteletseng : Haholo-holo ho pota 100 ℃ (mouoane o potlakileng oa mongobo) le 200 ℃–250 ℃ (ho bola ha li-surfactants ho emulsion le crystalline transition zone pele PTFE sintering). Ho futhumala ka potlako ho baka khatello ea maikutlo ka hare le khase e bakoang ke ho fetoha ha nako hang-hang ha li-solvents le li-additives, e leng se etsang hore ho be le ho phatloha ho hoholo.

·  Sekhahla sa ho pholisa ka potlako ka mokhoa o feteletseng : Ho pepeseha ka ho toba moeeng o potolohileng bakeng sa ho pholile ka potlako ka mor'a ho sintering ho baka khatello e matla ea hang-hang ea shrinkage ka lebaka la phapang e khōlō ea mocheso, e leng se etsang hore habonolo feela ho be le mapetsong a marang-rang.

·  Mocheso o feteletseng oa sintering kapa nako e telele ea sintering : Sena se baka ho senyeha ha boima ba limolek'hule tsa PTFE le ho phalla ho feteletseng, ho etsa hore thepa e be bonolo haholoanyane ho phunyeha tlas'a khatello ea kelello.

3. Litaba tsa Ts'ebetso ea Impregnation le Emulsion Concentration

Botenya, ho ts'oana le botebo ba ho kenella ha lesela le kentsoeng li ama ka kotloloho kutlo ea ho phatloha:

·  Lera le letenya ka ho fetesisa le le leng : E le ho phehella botenya kapa katleho ea tlhahiso, ho sebelisoa lesela la PTFE le letenya ka mokhoa o le mong. Nakong ea ho omisa le ho sila, seaparo se teteaneng se na le tsela e telele ea ho tlosoa ha solvent 'me se fokotseha haholo (PTFE emulsion hangata e na le lintho tse tiileng tse ka bang 60%, e bolelang hore hoo e ka bang 40% ea mongobo o tlameha ho tlosoa), e atisang ho baka ho phunyeha ha holim'a metsi.

Uneven  impregnation : Localized feteletseng PTFE buildup kapa uneven emulsion distribution on the lesela surface lead to concentrated shrinkage stress.

·  Ho kenella ha emulsion e sa lekaneng : Haeba lesela la fiber ea khalase le sa tlosoe ka boka kapa le sa tšoaroe hantle, PTFE emulsion e hloleha ho kenella ka botlalo ka har'a marako a likhoele 'me e theha 'filimi ea letlalo' feela. Filimi ena e na le anchoring e fokolang le substrate 'me e atisa ho arohana kapa ho phunyeha ha e futhumala.

4. Lintho Tse Amanang le Substrate

·  Lesela la fiber ea khalase e sa kenngoeng ka boka : Lesela la faeba ea khalase le na le lisebelisoa tsa boholo (parafine, epoxy, joalo-joalo) ho tloha mokhoeng oa ho loha. Ntle le mocheso o phahameng oa mocheso kapa ho hloekisa lik'hemik'hale pele ho kenngoe, lintho tsena tse phelang li hlahisa carbonize le volatilize nakong ea sintering e latelang, e hlahisang khase e senyang seaparo kapa e fokolisa maqhama pakeng tsa PTFE le fiber ea khalase, e leng se bakang mapetsong.

·  Sebopeho le botenya ba lesela la fiber ea khalase : Lesela le letenya le le teteaneng la khalase (joalo ka lesela le teteaneng la satin) le bonts'a ho tiea ho hoholo le ho ithiba ho matla ho PTFE ho honyela. Ho sa le joalo, li-grooves tse tebileng lipakeng tsa li-fiber bundles li atisa ho baka khatello ea maikutlo le ho phatloha mathōkong a li-groove nakong ea ho omisa.

Lintlha tse kaholimo li fanoe ke Jiangsu Aokai New Materials Technology Co., Ltd.

Bakeng sa lintlha tse qaqileng, maemo a ts'ebeliso le litharollo tse ikhethileng tsa sehlahisoa sa rona se felletseng - ho kenyelletsa lesela la PTFE le mocheso o phahameng oa mocheso, tepi ea mocheso o phahameng oa PTFE, lebanta le nang le mocheso o phahameng oa mocheso oa PTFE, mabanta a se nang moriti bakeng sa mochini o tlamang, lesela le nang le lehlakore le le leng la PTFE, masela a nang le mocheso o phahameng o sa keneleng mocheso le lihlahisoa tse ling tse sa keneleng mocheso, ka kopo, lihlahisoa tse ling tse sa keneleng mocheso le fiber tse ling ho ikopanya le rona:

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