Gabatarwar samfuran PTFE da aka cika

A cikin samfuran PTFE, cikaFarashin PTFEsu ne mafi girma samar, a kasashen waje cika PTFE ne gaba ɗaya kammala ta PTFE guduro samar shuka, kamar Jamus Hoechst HosTaflonTF4000 jerin, HosTaflonTF3000 jerin da HosTaflon2000 jerin.A kasar Sin, tun da fasahar samar da resin PTFE ta koma bayan fasahar sarrafawa, ana yin fasahar cika PTFE a masana'antar sarrafa samfur.Ta ƙara daban-daban fillers kamar inorganic, karfe da polymer a PTFE guduro don inganta matsa lamba juriya, sa juriya, sanyi kwarara juriya, zafi juriya, girma da kwanciyar hankali na PTFE.Cikakkun samfuran idan aka kwatanta da PTFE mai tsabta, juriya na matsa lamba ya karu da sau 5 zuwa sau 10, juriya ta karu da sau 1000, haɓakar haɓakar faɗaɗa madaidaiciya ta ragu da 80%, haɓakar thermal ya karu da sau 5, kuma rage juriya da juriya na ƙasa, galibi da ake amfani da shi a cikin masana'antar injiniya don gyaran gyare-gyaren mai ba tare da man fetur ba, bushings, piston zobba, jagororin kayan aiki na inji, da dai sauransu A cikin 'yan shekarun nan, ƙananan ƙwayoyin cuta na waje, cike da PTFE a matsayin bututun mai, bawuloli, famfo, da dai sauransu A aikace-aikace na rufi yana haɓaka cikin sauri, wanda shine sabon yanki na aikace-aikacen cike PTFE.
Dangane da waɗannan buƙatun da aka saba amfani da su sune: fiber gilashi, fiber carbon, graphite, yashi ma'adini, molybdenum disulfide, carbon amorphous, calcium fluoride, foda tagulla, yumbu, polyimide, polyphenylene, poly-p-hydroxyformate da sauransu.
Cikakkun samfuran PTFE gabaɗaya ana yin su: ingancin cikaFarashin PTFEya dogara da zabi na resin filler, da zane na dabara, mataki na homogeneity na abu hadawa da sauran dalilai.A halin yanzu akwai hanyoyin hadawa guda uku da ake amfani da su don cika PTFE: (1) busassun tsarin hadawa yana buƙatar na'urar haɗaɗɗiyar sauri, iri ɗaya ba tare da mataccen sarari ba, wanda ya dace da buƙatun samfurin gabaɗaya.(2) sauran ƙarfi hadawa, da sauran ƙarfi ne acetone ko methanol, ga gilashin-cika PTFE.(3) rigar hadawa: da yin amfani da wannan tsari gyare-gyaren kayayyakin da high inji ƙarfi, low lalacewa, mai kyau lalata juriya.Matsakaicin gyare-gyare na samfuran PTFE da aka cika ya dogara da girman rabo na filler a cikin PTFE, kamar: tare da 5% filler matsa lamba na mashaya 250;tare da 6% zuwa 10% filler matsa lamba na 350 mashaya;tare da 12% zuwa 25% filler matsa lamba na 500 mashaya;tare da fiye da 25% filler matsa lamba na 700 mashaya.Tsarin sintiri don cika samfuran iri ɗaya ne da na PTFE mai tsabta.Amma samfuran da ke ɗauke da MoS2 suna buƙatar sintering a matsakaicin iska a 360 ℃, ko sintering a matsakaicin nitrogen a 380 ℃.Abubuwan da aka cika da ke dauke da fiber gilashi sun dace da sintiri a cikin matsakaici na nitrogen.