Juzu'in gel yana nufin adadin yawan adadin hanyar sadarwar da aka haɗe a cikin mannen matsi na silicone wanda aka lulluɓe akan. Teflon teflon mai zafi mai zafi wanda ba zai iya narkewa a cikin kaushi mai kyau (kamar toluene). Hanyar aunawa ta ƙunshi haɗa fim ɗin manne mai tsafta a cikin ragar tacewa, cire shi a cikin injin Soxhlet na tsawon sa'o'i 24, sa'an nan kuma bushe ragowar da ba a iya narkewa zuwa nauyi na dindindin kafin lissafi.
2. Ƙarfin haɗin kai:
A cikin teflon Teflon, ƙarfin haɗin gwiwa yana da ƙarfin riƙe da zafin jiki mai ƙarfi (zazzaɓin rashin ƙarfi na mannewa ko lokacin riƙe ƙarfi). Ana yin gwajin yawanci a 180 ° C a ƙarƙashin nauyin kilogiram 1, ana yin rikodin lokacin har sai Layer na manne ya zame ko ya kasa. Wannan ƙimar kai tsaye tana nuna ikon mannewa na iya jurewa kwarara da tsagawa.
II. Daidaiton Mahimmanci Tsakanin Gel Fraction da Ƙarfin Haɗuwa
1. A ƙasa mahimmin batu (gel juzu'in <60%):
Har yanzu tsarin bai samar da hanyar sadarwa ba; Layer manne ya kasance a cikin yanayin ƙwanƙwasa mai ɗanɗano, tare da riƙe ikon da ke gabatowa sifili kuma babu ƙarfin haɗin kai mai amfani.
2. Kewaya mai amfani (60%-85%):
Bayan mahimmin mahimmin mahimmanci, ƙimar sarkar sarƙoƙi mai tasiri tana ƙaruwa sosai tare da juzu'in gel, kuma ƙarfin haɗin gwiwa yana girma sosai ko bin doka mai ƙarfi. Ƙara ɓangarorin gel daga 60% zuwa 70% na iya haɓaka lokacin ɗaukar zafi mai zafi daga mintuna zuwa sa'o'i; daga 70% zuwa 80%, ikon riƙewa na iya ƙaruwa da ƙarin 3 zuwa 10 sau. Yanayin gazawar sannu a hankali yana canzawa daga babban gazawar haɗin kai zuwa gauraye gazawar.
3. Babban kewayon haɗin kai (> 85%):
Ƙara ƙarfin haɗin gwiwa yana raguwa. Haɓaka juzu'in gel daga 85% zuwa 95% yana ƙaruwa riƙe lokaci da 20% -50% kawai, amma tack (makewa na farko) yana faɗuwa sosai saboda ƙuntataccen motsin sarkar kwayoyin halitta. Lokacin da juzu'in gel ɗin ya wuce kashi 95%, mannen Layer ɗin yana kusantar yanayin elastomer mai tsafta, kuma abubuwan manne-matsi na matsi sun ɓace da gaske.
Kamar yadda Jiangsu Teflon masana'antun masana'anta masu zafin jiki suka taƙaita, dangantakar da ke tsakanin lokacin riƙe ƙarfi (t_shear) da juzu'in gel (g) na iya bayyana kamar:
lg(t_shear) = A + B · g (tare da B kamar 0.1-0.2), yana nuna dogaro mai ma'ana. Ma'auni na A da B sun dogara da rabon guduro na MQ, kauri mai mannewa, da zafin gwaji.
Bayanai na yau da kullun (180 ° C tsayayyen ƙarfi, an daidaita shi zuwa lokacin riƙewa na 1 a kashi 65% na gel):
A bayyane yake cewa a cikin kewayon 60% -90%, kowane 5 kashi-kashi-maki karuwa a gel juzu'in zai iya haifar da wani mahara-ninka karuwa a high-zazzabi mai karfi cohesive ƙarfi.
IV. Dabarun Gudanarwa a cikin Kera Teflon Teflon
1. Gel mai nisa kewayo:
Don maƙasudin kaset ɗin iska mai jure zafi na gabaɗaya daga masana'antun masana'anta masu zafin jiki na Jiangsu Teflon, ɓangarorin gel ɗin da aka ba da shawarar shine 75% – 85%, daidaita tack da haɗin kai. Don bel mai ɗaukar zafi mai zafi na anti-stick (batun lodi na dogon lokaci a 200-260 ° C), ɓangaren gel ɗin dole ne ya kai 85% -93% don hana ragowar mannewa da ke haifar da rabuwar haɗin gwiwa na Layer na m.
2. Abubuwan da suka dace da mu'amala:
The PTFE surface na Teflon high-zazzabi tef yana da musamman low surface makamashi; sabili da haka, ƙarfin haɗin kai na mannewa dole ne ya kasance mafi girma fiye da ƙarfin haɗin gwiwa; in ba haka ba, gazawar haɗin gwiwa zai faru a ƙarƙashin damuwa. Idan juzu'in gel ɗin ya wuce 93%, manne Layer ya zama mai tauri, yana rage wetting da daidaituwa ga ma'aunin PTFE, wanda zai haifar da ɗagawa gefe. A cikin samarwa, yana da mahimmanci don sarrafa daidaitaccen yanayin zafin jiki, lokaci, da adadin kuzari don kulle juzu'in gel a cikin kewayon manufa, samun ingantaccen canji daga gazawar haɗin gwiwa zuwa gazawar tsaka-tsaki.
Idan kuna son ƙarin koyo game da cikakkun bayanai dalla-dalla, yanayin aikace-aikacen, da zaɓuɓɓukan gyare-gyare don cikakkun samfuran samfuranmu-ciki har da Teflon yadudduka masu zafin jiki, Teflon tef ɗin zafi mai zafi, bel ɗin raga mai zafin jiki na Teflon, bel ɗin da ba shi da ƙarfi mara ƙarfi don laminators, bel ɗin bel na gefe guda, PTFE mai tsayi mai tsayi. fiberglass yadudduka, da ƙari-don Allah jin daɗin tuntuɓar mu ta hanyar masu zuwa:
A koyaushe muna ɗaukan ƙwararrun falsafar sabis da ke tafiyar da mutunci, kuma muna sadaukar da kai don samar muku da mafita ta tsayawa ɗaya da sabis na kulawa!
