Kutheni Ilaphu le-PTFE elinobushushu obuphezulu liba lukhuni kwaye libe lukhuni emva kokusetyenziswa kwexesha elide kumaqondo obushushu aphezulu?

I-Jiangsu Aokai New Materials, umvelisi womthombo we-PTFE welaphu lobushushu obuphezulu, uchaza ukuqina kunye nokufakwa kwelaphu lobushushu obuphezulu be-PTFE emva kwenkonzo yobushushu obuphezulu bude ukusuka kwiimbono ezintathu: i-polymer chain relaxation, cross-linking, kunye nokuthotywa . Kufuneka kuqatshelwe ukuba izinto ezingundoqo ze-PTFE zelaphu lobushushu obuphezulu yi-polytetrafluoroethylene (PTFE), kwaye uhlalutyo olulandelayo lujolise kwiinguqu ze-microstructural ze-PTFE zobushushu obuphezulu.

I. Ukuphumla kweChayini yeMolekyuli (Ukuguga ngokwasemzimbeni)

Kwiqondo lokushisa eliphezulu, ukuhamba kwamaketanga eemolekyuli kwimimandla ye-amorphous ye-PTFE i-cloth ephezulu yokushisa inyuka, kwaye ngokuthe ngcembe iguqula ibe yi-crystalline state, ekhokelela kwi-crystallinity ephezulu. Le nkqubo yokuphumla kwekhonkco inciphisa ukuhamba kwamacandelo eemolekyuli kwilaphu le-PTFE elinobushushu obuphezulu, elibonakalisa ngokubonakalayo njengento eguqukayo ukusuka kwi-flexible ukuya kwi-hard and brittle.

II. Cross-Linking Reaction

Xa ilaphu PTFE high-ubushushu belaphu evezwe kumaqondo obushushu aphezulu ixesha elide (ingakumbi kufutshane okanye ngaphaya umda inkonzo yayo ephezulu), phambi umkhondo ioksijini okanye radiation, iimolekyuli PTFE ulahlekelwa iiathom fluorine ukwenza radicals simahla, nto leyo ibangela intermolecular cross-linking. Inethiwekhi edityaniswe ngokunqamlezayo ithintela ngokuthe ngqo ukutyibilika kwamatyathanga emolekyuli kwilaphu le-PTFE elinobushushu obuphezulu, libangela ukuba liphulukane nokuguquguquka. Esi sesinye sezizathu zekhemikhali ezingundoqo zokuqina kunye ne-embrittlement ye-PTFE yelaphu eliphezulu lobushushu.

III. Ukuthotywa Reaction

Kubushushu obuphezulu okanye kubukho be-oksijini, amatyathanga aphambili e-PTFE amalaphu aphezulu obushushu aphuka kwaye athobe, avelise amaqhekeza asezantsi-molekyuli-ubunzima kunye nokukhupha iigesi ze-fluoride. Nangona izinto eziphathekayo zinokuthamba ekuqaleni, ukuthotywa okuqhubekayo kukhokelela ekuhlahleni okubukhali kwisisindo se-molecular kunye nomonakalo kwisakhiwo se-crystalline yasekuqaleni. Ekugqibeleni, umphezulu we-PTFE ubushushu obuphezulu belaphu umgubo, iintanda, kwaye ibonisa embrittlement olungenakujikwa.

ISISHWANKATHELO : Xa ilaphu le-PTFE lobushushu obuphezulu lifudunyezwa ixesha elide, ukuphumla kwetyathanga (crystallization) kunye nokudityaniswa okunqamlezayo kubangela ukuqina kunye nokulahleka kokuqina; phantsi kweemeko ezimaxongo, ukuthotywa kutshabalalisa ngakumbi isidima sesakhiwo. Indibaniselwano yale miba mithathu ekugqibeleni yenza ilaphu le-PTFE lobushushu obuphezulu libe lukhuni kwaye libe brittle.

Olu lwazi lungasentla lunikezelwe nguJiangsu Aokai New Materials Technology Co., Ltd.

Ukuba unqwenela ukufunda ngakumbi malunga neeparitha ezineenkcukacha, iimeko zesicelo kunye nezisombululo ezilungiselelwe uluhlu olupheleleyo lwemveliso, kubandakanya i-PTFE ilaphu lobushushu obuphezulu, iteyiphu yobushushu obuphezulu be-PTFE, ibhanti elinobushushu obuphezulu be-PTFE, amabhanti angenamthungo oomatshini bokudibanisa, ilaphu le-PTFE elinamacala elinye, i-glass-high-high-temperature resistant Nceda uqhagamshelane nathi ngala majelo alandelayo:

·  I-Hotline yeNkonzo: Mnu Guo 18944819998

·  UMnu Liu 13705266308

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