Liphetoho tsa Sebopeho sa Lesela la Mocheso o Phahameng oa PTFE Tlas'a Maemo a Phahameng a Mocheso

PTFE lesela la mocheso o phahameng ke motsoako oa PTFE coating le fiberglass substrate. Ha e pepesehetse mocheso o ntseng o eketseha, thepa ena ha e 'qhibilihe' ka nako e le 'ngoe - e ba le letoto la liphetoho tsa' mele le tsa lik'hemik'hale ho pholletsa le mefuta e mene e fapaneng ea mocheso.

Ho tloha ho li-micro-cracking ho 260 ° C ho fihlela ho senyeha ho feletseng ho 500 ° C +, liphetoho tsa sebopeho li ama PTFE ea ho roala pele, ebe ke karolo ea fiberglass. Ho utloisisa mekhahlelo ena ho bohlokoa bakeng sa ts'ebetso e bolokehileng le e tšepahalang.

Aokai PTFE e hlahlobile boitšoaro ba mocheso oa masela a koahetsoeng ke PTFE ho pholletsa le mefuta eohle ea mocheso. Tataiso ena e hlalosa mekhahlelo e mene ea bohlokoa ea phetoho ea meralo le ho fana ka meeli e sebetsang ea mocheso.

Thempereichara ea Ts'ebeletso ea Nako e Telele - Ka tlase ho 260°C

Sebopeho ka kakaretso se lula se tsitsitse ha butle-butle, liphetoho tse nyenyane li etsahala.

1. Ho phomola ha liketane tsa limolek'hule tsa PTFE le phetoho ea crystallinity

Ho pepeseha ha mocheso nako e telele ho etsa hore butle-butle liketane tsa limolek'hule tsa polymer li phahamise khanya. Ho roala ka tsela eo ho fetoha ho brittle hanyenyane ka ho eketseha ha boima ba holim'a metsi. Ena ke ts'ebetso e liehang - e ka lekanngoa ka mor'a lihora tse makholo kapa tse likete.

2. Ho bokella khatello ea mocheso oa sefahleho

PTFE e na le coefficient ea katoloso ea mocheso e ka bang 10×10⁻⁵/°C , e leng holimo haholo ho feta fiberglass hoo e ka bang 5×10⁻⁶/°C . Ho pheta-pheta ha libaesekele tse batang ka mocheso ho hlahisa khatello ea maikutlo ka hare ho moeli oa coating-substrate, qetellong ho etsa li-micro-cracks ka nako. Ena ke mokhoa o ka sehloohong oa botsofali ka har'a sebaka se sireletsehileng sa ts'ebetso.

3. Volatilization ea li-additives tse setseng

Li-surfactants tse setseng le lisebelisoa tsa ho kolobisa tse setseng tlhahisong li senyeha hanyane ka hanyane, e leng se lebisang ho fifatseng ho fokolang holim'a lesela. Sena ha se kotsi empa se bontša hore thepa e ea tsofala.

Mocheso o Atamela le ho Feta Sebaka sa Melting - Hoo e ka bang 327°C

Hang ha PTFE e fihla mocheso oa eona oa ho qhibiliha, phetoho e kholo ea 'mele e etsahala.

1. Ho qhibiliha ha kristale-lebatooa

Semi-crystalline opaque milky-white PTFE e fetoha mokelikeli o kang oa amorphous gel o tsamaeang le katoloso e matla ea molumo . Ho roala ho lahleheloa ke matla a mechine 'me ho qala ho nolofatsa le ho phalla. Ka nako ena, lesela le lahleheloa ke botsitso ba li-dimensional le botšepehi ba sebopeho.

2. Delamination pakeng tsa ho roala le substrate

Ho fokotsa matla a momahano le khatello ea maikutlo e bakoang ke ho atolosoa ha mocheso ho etsa hore PTFE e qhibilihe e be blister, e hloekise, 'me e phalle hole le lesela la fiberglass, e leng se etsang hore ho be le delamination e kopantsoeng le ho hlōleha ha moralo. Sebaka se se nang thupa se senyeha ka lebaka leo. Hang ha delamination e etsahala, e ke ke ea etsolloa.

3. Fiberglass e boloka sebopeho sa eona sa skeleton

Lesela la fiberglass le ntse le tsitsitse ka mokhoa ona. Ntle le lera le sireletsang la PTFE, likhoele tsa khalase tse se nang letho li ba tlokotsing ea oxidation le khoholeho ea lik'hemik'hale.

Tlhokomeliso ea Aokai PTFE: Esita le maeto a makhutšoane a ka holimo ho 327°C a baka delamination e ke keng ea etsolloa. Lesela le ka shebahala le tiile ha le pholile, empa seaparo sa PTFE se arohane ka ho sa feleng le fiberglass, e lahleheloa ke botšepehi bohle ba mechine.

Qaleho ea ho Senyeha ha Mocheso - 400°C ho isa ho 500°C

PTFE limolek'hule tsa mokokotlo li qala ho arohana ha lik'hemik'hale, ho tlisa ho senyeha ho ke keng ha etsolloa ha sebopeho.

1. Karabelo e kholo ea depolymerization

Tlas'a maemo a se nang oksijene, PTFE e senyeha ka mokhoa oa zipper . CC li-covalent bond ho ketane e kholo lia senyeha, ho lokolla li-monomers tse nang le khase haholo-holo tse nang le tetrafluoroethylene (ho feta 95%) le hexafluoropropylene. Boima ba limolek'hule bo theoha haholo, 'me seaparo sa PTFE se pshatleha le ho senyeha.

2. Ho senyeha ha oxidative tlas'a maemo a aerobic

Oksijene e hlasela li-radicals tsa mahala tsa khabone mme e hlahisa likhase tse chefo joalo ka carbonyl fluoride (COF₂) le trifluoromethane, e tsamaeang le monko o bohale o bolila. Hydrogen fluoride (HF) le perfluoroisobutylene (PFIB) le tsona li ka lokolloa tlas'a maemo a itseng.

3. Latela masala a khabone

PTFE e hloekileng e fetoha mouoane hoo e batlang e se na masala a khabone. Ho fifala ha lesela hangata ho bakoa ke carbonization ea fiberglass sizing agents, litšila tse holim'a metsi, kapa li-comonomer tse nyane ho PTFE e fetotsoeng.

4. Ho chesoa ha fiberglass sizing agents

Lisebelisoa tsa boholo ba lintho tse phelang tse koahetsoeng ka likhoele tsa fiberglass li bola ka holimo ho 350°C. Li-filaments tsa khalase li lahleheloa ke ho khomarelana, e leng ho etsang hore lesela le be boreleli 'me le sekamele ho ferekana.

(配图4插入位置：本节末尾，展示PTFE在400°C以上分解后仅剩碳化残留物和裸露玻纤）物的

Tlhaloso: Lesela la PTFE ka mor'a ho pepeseha ha 450 ° C - ho roala ho senyehile ka ho feletseng, ho siea feela masala a carbonized le ho pepeseha, fiberglass e fluffy.

Sebaka sa Tšenyo e Phahameng ea Mocheso – Kaholimo ho 500°C

Thepa ea PTFE e felile ka ho felletseng, e siea feela karolo e se nang letho ea fiberglass e nang le mojaro o tsoelang pele oa mocheso o phahameng.

1. Ho nolofala ha fiber ea E-glass

Fibre e tloaelehileng ea khalase ea E e na le ntlha e nolofatsang e ka bang 840°C . Leha ho le joalo, matla a eona a tsitsitseng a theoha haholo ka holimo ho 500 ° C. Ha le futhumatsoa ho feta 800°C, lesela lohle la fiberglass lea nolofala, lea holofala, 'me le fokotsehe 'me le lahleheloa ke matla a ts'ehetso ea sebopeho.

2. Mocheso o phahameng oa ho phalla le ho fokotseha

Ho pepeseha ha mocheso o phahameng ka nako e telele ho baka likhoele tsa khalase, tse lateloang ke devitrification le pulverization e senyang sebopeho sa lesela ka botlalo. Nakong ena, lesela ha le sa lemohuoa e le lesela - le fetoha boima bo hlephileng, bo fokolang ba likhoele tsa khalase.

Kakaretso - Mehato ea Mocheso le Meeli e Bohlokoa

Aokai PTFE e khothalletsa ka tieo ho laola mocheso oa nako e telele oa ts'ebetso o ka tlase ho 260 ° C le ho fokotsa litlhōrō tsa nako e khutšoanyane ho 300 ° C ho qoba ho hlōleha ha tshebetso le likotsi tse ka 'nang tsa e-ba teng tsa tšireletso tse bakoang ke delamination le ho bola ha mocheso.

Litaba tsa tekheniki tse boletsoeng ka holimo li fanoa ke Jiangsu Aokai New Materials Technology Co., Ltd.

Haeba u lakatsa ho fumana lintlha tse qaqileng tsa tekheniki, maemo a ts'ebeliso le litharollo tse ikhethileng bakeng sa potefolio ea sehlahisoa sa rona se felletseng, ho kenyeletsoa lesela la PTFE le mocheso o phahameng oa mocheso, tepi ea sekhomaretsi ea PTFE, lebanta la PTFE le mocheso o phahameng oa mocheso, lebanta le se nang mocheso, lesela le nang le lehlakore le le leng la PTFE, lesela le mamellang mocheso o phahameng oa mocheso le fiberglass. lesela, ka kopo re fihlele ka lintlha tse ka tlase:

• Mong. Guo: +86 18944819998

• Mong. Liu: +86 13705266308

Re ts'ehetsa boits'oaro le bots'epehi joalo ka filosofi ea rona ea mantlha ea khoebo, e ikemiselitseng ho fana ka litharollo tsa indasteri e le 'ngoe le ts'ebeletso e nahannoeng ea bareki!