Izinguquko Zesakhiwo se-PTFE Indwangu Yokushisa Okuphezulu Ngaphansi Kwezimo Zezinga Lokushisa Eziphezulu

Indwangu ye-PTFE enezinga eliphezulu lokushisa iyinhlanganisela ye-PTFE enamathelayo ne-fiberglass substrate. Uma ichayeke emazingeni okushisa akhuphukayo, lokhu okubalulekile akumane 'kuncibilike' ngesikhathi esisodwa - kungena uchungechunge lwezinguquko eziqhubekayo zomzimba namakhemikhali kuzo zonke izinhlobo ezine ezihlukene zokushisa.

Ukusuka ekuqhekekeni okuncane ku-260°C ukuqeda ukubola ku-500°C+, izinguquko zesakhiwo zithinta ukunamathela kwe-PTFE kuqala, bese kuba i-fiberglass substrate. Ukuqonda lezi zigaba kubalulekile ekusebenzeni okuphephile nokuthembekile.

I-Aokai PTFE ihlaziye ukuziphatha okushisayo kwezindwangu ezimbozwe nge-PTFE kuwo wonke amabanga okushisa. Lo mhlahlandlela uchaza izigaba ezine ezibalulekile zokushintsha kwesakhiwo futhi unikeze imikhawulo yokushisa esebenzayo.

Ibanga Lezinga Lokushisa Lesevisi Yesikhathi Eside – Ngaphansi Kwama-260°C

Isakhiwo sisonke sihlala sizinzile kuyilapho ukuguqulwa okunensayo, okuncane kakhulu kwenzeka kancane kancane.

1. Ukuphumula kwamaketanga e-PTFE amangqamuzana nokulungiswa kwecrystallinity

Ukuchayeka okushisayo kwesikhathi eside kubangela ukunyakaza kancane kancane kwamaketanga e-polymer molecular futhi kuphakamisa kancane ukucwebezela. Ngakho-ke i-coating iphenduka i-brittle kancane ngokunyuka kokuqina kwendawo. Lena inqubo enensayo - iyalinganiseka ngemva kwamakhulu noma izinkulungwane zamahora.

2. Ukuqoqwa kokucindezeleka okushisayo kwe-interface

I-PTFE ifaka i-thermal-expansion coefficient cishe engu- 10×10⁻⁵/°C , ephakeme kakhulu kune-fiberglass cishe ngo- 5×10⁻⁶/°C . Ukuhamba ngebhayisikili okuphindaphindiwe okushisayo kubanda kudala ingcindezi yangaphakathi emngceleni we-coating-substrate, ekugcineni kwakhe imifantu emincane ngokuhamba kwesikhathi. Lena indlela yokuqala yokuguga phakathi kwebanga lokusebenza eliphephile.

3. Ukushintshashintsha kwezithasiselo ezisele

Ama-surfactants asele nama-ejenti okumanzisa asele ekukhiqizweni awola kancane kancane, okuholela ekubeni mnyama kancane endaweni yendwangu. Lokhu ngokuvamile akunangozi kodwa kubonisa ukuthi okokusebenza kuyaguga.

Izinga Lokushisa Liyasondela Futhi Lidlule Iphuzu Elincibilikayo - Cishe ku-327°C

Uma i-PTFE ifinyelela izinga lokushisa elincibilikayo, uguquko olumangalisayo lwesakhiwo somzimba lwenzeka.

1. Ukuncibilika kwe-Crystalline-region

I-PTFE e-semi-crystalline opaque milky-white iguqulela uketshezi olufana ne-amorphous oluhambisana nokunwetshwa kwevolumu ebukhali . I-coating ilahlekelwa wonke amandla emishini futhi iqala ukuthamba nokugeleza. Kuleli qophelo, indwangu ilahlekelwa ukuzinza kwayo kwe-dimensional kanye nobuqotho besakhiwo.

2. I-Delamination phakathi kwe-coating ne-substrate

Amandla okubumbana ancishisiwe kanye nengcindezi ebangelwa ukunwetshwa kokushisa kubangela i-PTFE encibilikisiwe ibe namabhamuza, ixebuke, futhi igeleze isuke kwindwangu ye-fiberglass, okuholela ekuhlukaniseni okuyinhlanganisela kanye nokwehluleka kwesakhiwo. Ingaphezulu elingabambeki liyalimala ngenxa yalokho. Uma i-delamination seyenzekile, ayibuyiseleki emuva.

3. I-Fiberglass igcina isakhiwo sayo samathambo

Indwangu ye-fiberglass ihlala izinzile kulesi sigaba. Ngaphandle kwesendlalelo se-PTFE esivikelayo, imicu yengilazi engenalutho iba sengcupheni ye-oxidation kanye nokuguguleka kwamakhemikhali.

Isexwayiso se-Aokai PTFE: Ngisho nohambo olufushane olungaphezu kuka-327°C lubangela ukuwohloka okungahlehliseki. Indwangu ingase ibukeke iqinile uma ipholile, kodwa okokunamathela kwe-PTFE kuhlukaniswe unomphela ku-fiberglass, kulahlekelwe yikho konke ubuqotho bemishini.

Ukuqala Kokubola Kokushisa - 400°C kuya ku-500°C

Ama-backbones amangqamuzana e-PTFE aqala ukuqhekeka kwamakhemikhali, okuletha ukuwohloka kwesakhiwo okungenakulungiseka.

1. Ukusabela kwe-depolymerization okuvelele

Ngaphansi kwezindawo ezingenawo umoya-mpilo, i-PTFE ihlangabezana nokucekelwa phansi kohlobo lweziphu . I-CC covalent bond on the main chain idilika, ikhulula ama-gaseous monomers ngokuyinhloko ahlanganisa i-tetrafluoroethylene (ngaphezu kwama-95%) kanye ne-hexafluoropropylene. Isisindo samangqamuzana sehla kakhulu, futhi i-PTFE enamathelayo iyabhidlika futhi ihlakazeke.

2. Ukubola kwe-oxidative ngaphansi kwezimo ze-aerobic

Umoya-mpilo uhlasela ama-radicals angenayo i-carbon futhi ukhiqize amagesi anobuthi njenge-carbonyl fluoride (COF₂) ne-trifluoromethane, ehambisana nephunga elimuncu elibukhali. I-Hydrogen fluoride (HF) ne-perfluoroisobutylene (PFIB) nazo zingakhululwa ngaphansi kwezimo ezithile.

3. Landelela izinsalela zekhabhoni

I-PTFE ehlanzekile iyahwamuka cishe ngokuphelele ngaphandle kwezinsalela zekhabhoni. Ukushintsha umbala omnyama engutsheni ngokuvamile kuvela ku-carbonization ye-fiberglass sizing agents, ukungcola kwendawo, noma ama-comonomer amancane ku-PTFE yebanga elilungisiwe.

4. Ukushiswa kwe-fiberglass sizing agents

Ama-ejenti okulinganisa emvelo ambozwe emicu ye-fiberglass abola ngaphezu kuka-350°C. Izinhlayiya zengilazi zilahlekelwa ukunamathelana, okwenza indwangu ibe fluffy futhi ijwayele ukufutha.

(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

Amazwibela: Indwangu ye-PTFE ngemva kokuchayeka okungu-450°C – okokunamathela kubole ngokuphelele, kushiya kuphela izinsalela ezinekhabhoni futhi obala, i-fiberglass ethambile.

Indawo Yokubhujiswa Kwezinga Lokushisa Okuphezulu – Ngaphezu kuka-500°C

I-PTFE enamathelayo isinyamalale ngokuphelele, ishiya i-fiberglass engenalutho kuphela enomthwalo oqhubekayo wezinga lokushisa eliphezulu.

1. Ukuthambisa kwe-E-glass fiber

I-E-glass fiber evamile inephuzu lokuthambisa elicishe libe ngu- 840°C . Noma kunjalo, amandla ayo okuqina ehla ngokuphawulekayo ngaphezu kuka-500°C. Uma ishisiswe ngaphezu kuka-800°C, yonke indwangu ye-fiberglass iyathamba, yonakale, futhi iyantenga futhi ilahlekelwe amandla okusekela kwesakhiwo.

2. I-high-temperature creep kanye ne-devitrification

Ukuchayeka emazingeni okushisa aphezulu isikhathi eside kubangela ukwelula kwentambo yengilazi, okulandelwa ukudevitrification nokufihliza okubhidliza ngokuphelele isakhiwo sendwangu. Kulesi sigaba, indwangu ayisabonakali njengendwangu - iba yinqwaba ekhululekile, ebuthakathaka yezintambo zengilazi.

Isifinyezo - Izigaba Zezinga Lokushisa kanye Nemikhawulo Ebalulekile

I-Aokai PTFE incoma ukuthi kulawulwe ngokuqinile izinga lokushisa lokusebenza lesikhathi eside elingaphansi kuka -260°C futhi kukhawulelwe iziqongo zesikhathi esifushane zibe ngu- 300°C umkhawulo ukuze kugwenywe ukwehluleka ukusebenza kanye nezingozi zokuphepha ezingaba khona ezibangelwa ukubola nokubola kokushisa.

Okuqukethwe kobuchwepheshe okubalulwe ngenhla kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.

Uma ufisa ukuthola imininingwane enemininingwane yemingcele yobuchwepheshe, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zephothifoliyo yethu yomkhiqizo ogcwele uhla olugcwele, okuhlanganisa indwangu ye-PTFE eshisa kakhulu, itheyipu enamathelayo ye-PTFE, izinga lokushisa eliphezulu le-PTFE ibhande, ibhande lokucindezela ukushisa elingenamthungo, i-PTFE ehlangothini olulodwa lwe-PTFE, indwangu ekwazi ukumelana nokushisa okuphezulu ne-fiberglass indwangu, sicela usithinte ngemininingwane yokuxhumana engezansi:

• UMnu. Guo: +86 18944819998

• UMnu. Liu: +86 13705266308

Siphakamisa ubungcweti nobuqotho njengefilosofi yethu yebhizinisi ewumongo, sizibophezele ekunikezeni izixazululo zezimboni ezinomugqa owodwa kanye nenkonzo ecabangelayo eqondiswe kumakhasimende!