Uburyo bwo kugenzura Crystallinity ya PTFE Ipfunditse kuri Teflon Yambaye Ubushyuhe Bwinshi

I. Amabwiriza asobanutse yikigereranyo cyo gukonja

Abakora imyenda yo mu rwego rwo hejuru ya Teflon berekana ko kugenzura igipimo cyo gukonjesha aribwo buryo butaziguye kandi bunoze bwo kugenzura kristu. PTFE imaze gushonga burundu hejuru ya 380 ° C, iminyururu ya molekile itondekanya muri kasitori ya kirisiti iyo inyuze hejuru yubushyuhe bwo hejuru bwa 310 ~ 315 ° C mugihe cyo gukonja. Igipimo cyo gukonjesha kigena agace ka kristu hamwe na microscopique morphologie ya coating.

1. Gukonjesha byihuse (kuzimya) kubutaka buke

Ubuso bw'imyenda yacumuye bukonjeshwa byihuse hifashishijwe imyenda ikonje, imbeho ikonjesha cyangwa ibigega by'amazi bisanzwe. Iminyururu ya molekile irakonjeshwa mbere yuburyo busanzwe kandi buteganijwe, ikora umubare munini wintete ntoya kandi idatunganye. Ipitingi yabonetse igaragaramo imiterere yoroshye hamwe nubukomezi buhebuje hamwe nuburyo bwiza bwo gukora butari inkoni, mugihe ubukana bwayo no kwihanganira kugabanuka byagabanutseho gato.

2. Gukonjesha buhoro (annealing) kuri kristu yo hejuru

Igice cyo kubika ubushyuhe giteganijwe gusohoka mu itanura ryacumuye, cyangwa umwenda ukonjeshwa hamwe n’itanura ku gipimo gito cyane cya 10 ~ 50 ° C / h. Ibi bituma urujya n'uruza rw'iminyururu ihagije ikora spherulite nini kandi yuzuye. Ipitingi ifite ubukana bwinshi, kwihanganira kwambara no guhagarara neza, nyamara hamwe no kugabanuka guhinduka no kwiyongera.

II. Inzira y'abafasha no kugenzura ibikoresho

Hashingiwe ku kugena igipimo cyo gukonjesha, ingamba zifasha zikurikira zirashobora kurushaho guhuza neza kristu yububiko bwa PTFE.

1. Kugabanya ubushyuhe no gufata umwanya

Ibikoresho bigomba gushyukwa kugeza kuri 380 ~ 400 ° C kandi bigafatwa umwanya uhagije wo gushonga burundu kristu yumwimerere no gukuraho amateka yubushyuhe. Gucumura bidahagije bizasiga nuclei isigaye ya kirisiti, bikavamo hejuru cyane kandi bigabanijwe kristu ya nyuma.

2. Annealing nyuma yubuvuzi

Kubitwikiriye hamwe na kristu ntoya yabonetse kubwo gukonjesha byihuse, gukura kwa kirisiti ya kabiri no kurandura imihangayiko y'imbere birashobora kugerwaho no kuvura ubushyuhe buri gihe kuri 300 ~ 320 ° C mumasaha menshi bikurikirwa no gukonja buhoro, byongera kuringaniza kristu.

3. Uburemere bwibikoresho bya molekile

Uburemere-buremereye bwa PTFE butandukanya ibintu birashonga cyane kandi bigenda byoroha cyane, biganisha ku gipimo cya kristu. Mubihe bimwe byo gukonjesha, biroroshye gutegura ibifuniko hamwe na kristu nkeya.

4. Nucleating agent yongeyeho

Igipimo gito (0.1% ~ 1%) cyuzuza organic organique cyangwa copolymer ya paruforine irashobora gutanga umubare munini wa nuclei ya kirisitu itandukanye kandi inonosora cyane ibinyampeke bya kristu. Nubwo idashobora guhindura cyane muri rusange kristu, irahindura neza microstructure ya kristu.

III. Imicungire yuzuye kubikorwa byinshi byo gutwikira ibicuruzwa

Imyenda ya Teflon yubushyuhe bwo hejuru ikorwa nuburyo bwinshi bwo gutera akabariro hamwe no gucumura buhoro buhoro, bisaba kugenzura uburyo bukurikira.

1. Guhuza interineti ihuza interineti

Itandukaniro rinini cyane mubipimo byo gukonjesha hagati yabantu bizatera kristaliste idahuza kandi bitange imihangayiko yimbere, ndetse biganisha no gutwikisha ibishishwa mubihe bikomeye. Birasabwa kwemeza gukonjesha byoroheje kurwego rwagati, kandi ugashyira mubikorwa gukonjesha byihuse cyangwa gahoro gusa kurwego rwo hanze ukurikije ibisabwa byumusaruro.

2. Ingaruka yububiko

Ipitingi zibyibushye zibabazwa no gukonjesha hagati yubuso bwimbere. Igice cyimbere gikunda gukora kristu nyinshi kubera ubushyuhe buke. Birakenewe kongera igihe gikwiye cyo gucumura kugirango ubushyuhe bumwe bwububiko bwose mbere yo gushyira mubikorwa uburyo bwo gukonjesha.

3. Guhuza impagarara mugihe cyo gukonja

Impagarara zashyizwe hejuru yigitambara mugihe cyo gukonjesha bigira ingaruka kumyerekezo yiminyururu ya molekile, ihuza hamwe na kristu ya kirisiti kandi ikanagena hamwe na morfologiya ya nyuma ya kirisitu hamwe nuburinganire bwimiterere. Igenzura rihujwe kandi risobanutse ni itegeko.

IV. Kugaragaza Umubare wa Crystallinity

Itandukaniro rya Scanning Calorimetry (DSC) rigomba gukoreshwa kugirango hamenyekane kristu nyuma yo guhinduka. Icyitegererezo cya 5 ~ 10mg gishyuha ku gipimo cya 10 ° C / min kugirango ugerageze gushonga. Ikirangantego kibarwa mugabanye gushishikara gushonga gushishikara gushishikara gushonga kwa 100% kristaline PTFE (hafi 82J / g). Ufatanije no kunama, kunanirwa kwihanganira nibindi bizamini, imikorere yuburyo bwiza irashobora kugenwa.

Amahame rusange yibikorwa : Kugirango ubone kristu ntoya, shyira mu bikorwa kuzimya nyuma yo gucumura byuzuye; kugirango ubone kristu nyinshi, komeza ubushyuhe burigihe hafi ya 310 ° C hanyuma ukurikire gukonja cyane nyuma yo gucumura byuzuye.

Ibikoresho bya tekinike byavuzwe haruguru bitangwa na Jiangsu Aokai Ibikoresho bishya byikoranabuhanga Co, Ltd.

Kumakuru yimbitse kumiterere irambuye, siyariyeri yo gusaba hamwe nigisubizo cyihariye cyibicuruzwa byacu byose birimo ubushyuhe bwo hejuru bwa Teflon, Ubushyuhe bwo hejuru bwa Teflon kaseti, umukandara wa Teflon wo mu rwego rwo hejuru, umukandara w’imashini uhuza imashini, umukandara wa PTFE uruhande rumwe, umwenda wa PTFE urwanya ubushyuhe bwinshi hamwe n’igitambaro gishyuha cya fiberglass, nyamuneka utwandikire kuri interineti.

Umurongo wa telefoni :

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