Me ke Haɓaka Faɗawa a cikin Tsarin Ci Gaban PTFE?

A matsayin ƙwararren tushen masana'anta na masana'anta masu zafin jiki na PTFE, Jiangsu Aokai New Materials zai bayyana abubuwan da ke haifar da fatattaka a cikin zanen fiber gilashi bayan impregnation tare da PTFE (polytetrafluoroethylene) emulsion. Wannan al'amari ne na gama gari a cikin masana'antar kayan haɗin gwiwa, wanda yawanci yana faruwa a lokacin bushewa (cire danshi da masu haɓaka) ko zafin jiki mai zafi (narkar da ƙwayoyin PTFE a cikin fim mai ci gaba).

1. Tsananin Rashin Ma'auni na Ƙirar Ƙarfafa Ƙwararrun Ƙwararru

Wannan shi ne ainihin dalilin jiki.

Akwai babbar bambanci a cikin thermal fadada coefficients tsakanin gilashin fiber da PTFE: da mikakke fadada coefficient na gilashin fiber ne kamar 5 × 10⁻⁶ / ℃ , alhãli kuwa cewa na PTFE ne game da 100 × 10⁻⁶ / ℃ zuwa 200 × 10⁻⁻ / ℃  na gilashin.

A lokacin sanyaya (daga zafin jiki na kusan 380 ℃ – 400 ℃ zuwa dakin zafin jiki), PTFE yana raguwa sosai fiye da tsarin fiber gilashin. Tunda zanen fiber gilashi yana aiki azaman kwarangwal mai tsauri, PTFE yana takurawa yayin raguwa, yana haifar da damuwa mai ƙarfi na ciki. Lokacin da wannan damuwa ya wuce ƙarfin ƙarfin ƙarfin fim na PTFE ko ƙarfin haɗin kai tsakanin PTFE da gilashin gilashi, fashewa yana faruwa don saki damuwa.

2. Ba daidai ba Gudanar da Bushewa da Tsarin Tsara

Siffofin dumama na kayan da ke ciki suna shafar fashe kai tsaye:

·  Excessively azumi dumama kudi : Musamman a kusa da 100 ℃ (sauri vaporization na danshi) da kuma 200 ℃-250 ℃ (bazuwar surfactants a cikin emulsion da crystalline mika mulki yankin gaban PTFE sintering). Saurin dumama yana haifar da damuwa na ciki da tasirin iskar gas daga saurin juzu'i na kaushi da ƙari, wanda ke haifar da fashewar shafi.

Yawan  sanyi mai saurin gaske : Bayyanar kai tsaye ga iskar yanayi don saurin sanyaya bayan ɓacin rai yana haifar da matsananciyar raguwa nan take saboda manyan bambance-bambancen zafin jiki, wanda ke haifar da fashewar hanyar sadarwa da sauri.

Yawan  zafin jiki mai yawan gaske ko kuma tsayin lokaci mai tsawo : Wannan yana haifar da lalacewa na nauyin kwayoyin PTFE da yawan ruwa mai yawa, yana sa kayan ya fi sauƙi ga fashewa a ƙarƙashin damuwa.

3. Matsalolin da ke cikin Tsarin Haɓaka da Matsalolin Emulsion

Kauri, daidaito da zurfin shigar cikin Layer ɗin da ke ciki kai tsaye yana shafar fashewar hankali:

·  Excessively thick single impregnation layer : In pursuit of thickness or production efficiency, an overly thick PTFE coating is applied in one pass. A lokacin bushewa da sintering, wani lokacin farin ciki shafi yana da tsayin hanya don cire sauran ƙarfi da jurewa girma volumetric shrinkage (PTFE emulsion yawanci yana da m abun ciki na game da 60%, ma'ana wajen 40% danshi dole ne a cire), wanda akai-akai haifar da fata fatattaka.

Ba  daidai ba impregnation : Localized wuce kima PTFE ginawa ko m emulsion rarraba a kan masana'anta surface take kaiwa zuwa mayar da hankali shrinkage danniya.

Rashin  isasshen emulsion shigar azzakari cikin farji : Idan gilashin fiber zane ba dewaxed ko talauci surface-bi, PTFE emulsion kasa cikawa shiga cikin fiber daure da kawai Forms wani na waje 'fata film'. Wannan fim ɗin yana da rauni anchoring tare da substrate kuma yana ƙoƙarin cirewa ko fashe lokacin zafi.

4. Abubuwan da suka danganci Substrate

Tufafin  fiber na gilashin da ba a daɗe ba : Gilashin fiber ɗin gilashi yana ƙunshe da ma'aunin ƙima (paraffin, epoxy, da sauransu) daga tsarin saƙa. Ba tare da lalatawar zafi mai zafi ba ko tsaftacewar sinadarai a gabanin impregnation, waɗannan kwayoyin halitta suna carbonize kuma suna canzawa a lokacin sintiri na gaba, suna haifar da iskar gas wanda ke rushe murfin ko raunana haɗin gwiwa tsakanin PTFE da fiber gilashi, wanda ke haifar da fasa.

·  Tsarin da kauri na gilashin fiber zane : Kauri da kuma denser gilashin fiber zane (kamar kauri satin masana'anta) nuna mafi girma rigidity da kuma karfi hani a kan PTFE shrinkage. A halin yanzu, tsagi mai zurfi tsakanin ɗigon fiber yana haifar da damuwa da damuwa a gefuna a lokacin bushewa.

ne ya samar da bayanin da ke sama. Jiangsu Aokai New Materials Technology Co., Ltd

Don cikakkun sigogi, yanayin aikace-aikacen da keɓaɓɓen mafita na kewayon samfuran mu - gami da PTFE high-zazzabi zane, PTFE high-zazzabi tef, PTFE high-zazzabi raga bel, sumul belts ga bonding inji, guda-gefe PTFE zane, high-zazzabi resistant conveyor bel, high-zazzabi da alaka da mu gilashin zane da kuma sauran free fiber.

·  Layin Sabis: Mr. Guo: +86 18944819998 Malam Liu: +86 13705266308

Kullum muna riƙe falsafar sabis na inganci mai tsada, ƙwarewa da mutunci, kuma mun sadaukar da kai don samar muku da mafita ta tsayawa ɗaya da sabis na kulawa!