A cikin tsire-tsire masu sinadarai, bututu da tasoshin suna fuskantar hare-hare akai-akai daga kafofin watsa labaru masu ƙarfi - acid mai ƙarfi, alkalis mai zafi, kaushi na halitta, da tururi. Tef ɗin PTFE mafita ce ta gama gari don hana lalata, rashin sanda, da kariyar rufewa. Amma zaɓin tef ɗin da ya dace ba abu ne mai sauƙi kamar zabar mafi girman ƙimar zafin jiki ba.
Aokai PTFE ya ba da tef ɗin PTFE don aikace-aikacen sinadarai shekaru da yawa. Wannan jagorar yana bayyana tsarin layi uku na tef ɗin PTFE, ainihin ma'aunin zaɓi (zazzabi, kafofin watsa labaru, buƙatun inji), da jagororin gini masu mahimmanci.
Tsarin Layi Uku na Tef ɗin Maɗaukakin Zazzabi na PTFE
Gabaɗayan aikin tef ɗin PTFE na kasuwanci an ƙaddara ta matakan tsari guda uku:
Tsarin Tsarin
Kayayyakin gama gari
Tasiri kan Zaɓin samfur
Layer mai aiki na saman
Fim ɗin PTFE mai tsabta / masana'anta fiberglass mai ciki
Yana gudanar da kadarorin da ba na sanda ba, juriyar sinadarai, da matsakaicin juriya na zafin jiki
Ƙarfafa substrate
Babu (fim mai tsabta) / Fiberglass masana'anta / Aramid masana'anta
Yana ƙayyade ƙarfin injina, juriya mai ƙarfi, da juriyar huda
Layer m
Silicone PSA, Acrylic PSA, Rubber na tushen PSA
Yana saita iyakar zafin jiki na sama da juriya na sinadaran duka tef; yawanci mahaɗin aikin mafi rauni
Mahimman fahimta: Ko da yake PTFE kanta na iya yin aiki a tsaye daga -190 ° C zuwa 260 ° C na dogon lokaci, mannen shine aikin ƙwanƙwasa . Zaɓi manne dangane da ainihin yanayin sabis, ba kawai saman PTFE ba.
Ma'auni na Zaɓin Mahimmanci da Ƙa'idodin Daidaitawa
1. Yanayin aiki - zaɓin m shine babban fifiko
Yanayin Zazzabi
Nasihar manne
Me yasa
200 ° C - 260 ° C (tsawon lokaci)
Silicone PSA (da ake bukata)
Tsarin manne kawai wanda ke riƙe da kwanciyar hankali a wannan kewayon; kadan saura bayan kwasfa
120 ° C - 180 ° C tare da mafi girman ƙarfi & juriya mai
PSA acrylic high-zazzabi
Ƙarfin haɗin gwiwa fiye da silicone, amma ya kasa sauri a 260 ° C
Kasa da 100 ° C
Acrylic na al'ada ko tushen roba
Karɓa, amma ba kasafai ba a muhallin sinadarai
Aokai PTFE bayanin kula: Don aikace-aikace a 200°C+, acrylic PSA ba a yarda da shi ba - zai ƙasƙanta, tausasa, da haifar da bawon tef. Silicone shine kawai zaɓi mai dacewa.
2. Chemical kafofin watsa labarai - jituwa tsakanin m da substrate
Layin aikin PTFE yana fasalta kusan juriyar lalata ta duniya (sai dai narkakkar alkali da iskar gas mai tsananin zafi). Koyaya, kafofin watsa labarai na sinadarai suna shiga daga gefuna na tef kuma kai tsaye suna lalata layin manne.
Organic kaushi (ketones, esters, benzene, toluene), mai, man fetur, karfi oxidizing acid (HNO₃, maida hankali H₂SO₄), glacial acetic acid
Acrylic PSA (jin mai jurewa)
Silicone yana kumbura a cikin kwayoyin kaushi; Ana ba da shawarar acrylic, amma tabbatar da ƙimar zafin jiki (gaba ɗaya ≤150°C)
Babban zafi mai zafi + acid mai girma / alkali (madaidaicin bayyanar)
Canja wurin silicone PSA + iska mai yawa
Mafi tsananin yanayin - silicone na iya yin ruwa; ƙarfafa tare da iska mai yawa
Don yanayin zafi da ya wuce 150°C tare da kaushi mai kaushi: Yi amfani da gyaran injina ko manne mara zafi-kyakkyawan tef/tubing na PTFE.
Yanayin Aikace-aikacen da Zaɓin Madaidaicin Substrate
Yanayin aikace-aikace
Shawarwari Substrate
Dalili
Bututu m bango anti-lalata & anti-stick shafi (hana fantsama jari jari)
Ƙarfin fiberglass mai rufi na PTFE mai ƙarfi (launin ruwan kasa/baƙi)
Mai jure sawa, mai jure hawaye; kauri 0.13-0.25mm; dace da maimaita iska, m conformability
Katanga na ciki & flange surface anti-stick liner
Fim ɗin PTFE mai tsabta
Maɗaukaki mai laushi maras sanda, babu haɗarin wicking fiber; manufa domin lebur da manyan lankwasa saman
Hadawa shaft & abin nadi
PTFE fiberglass masana'anta da high-tack silicone m
Yana goyan bayan tashin hankali; fiberglass substrate yana ba da ƙarfin ƙarfi mai ƙarfi, yana guje wa lalacewa yayin juyawa
Zare sealing da gasket maye
Machined tsarki PTFE fim tef
Yana amfani da kayan aikin sanyi na PTFE don cike giɓi; Ana buƙatar tef mara fiberglass
Ramin rami & gilashin gani na tankunan ajiyar acid mai ƙarfi
Fim ɗin PTFE mai tsabta / fiberglass masana'anta tare da m acrylic mai jurewa sinadarai
Fim mai tsabta yana ware kafofin watsa labaru masu lalata; fiberglass masana'anta inganta taurin; haɗin gwiwa na cinya yana buƙatar ƙarfafa multilayer
Mahimman Gine-gine da Jagororin Tsaro
1. Surface pretreatment - tushe na bonding
Ana buƙatar cikakken ragewa, cire tsatsa, da bushewa. Shafa saman tare da acetone ko barasa yana biye da gaurayawan harshen wuta don haɓaka ƙarfin haɗin gwiwa. Wannan yana kawar da gurɓataccen abu kuma yana kunna saman ƙarfe don iyakar mannewa.
2. Yadudduka masu jujjuyawa da iska
ƙaramin yadudduka na iska 2-3 don kariyar sinadarai tare da 50% zoba kowace da'irar. Ana buƙatar Dole ne a ƙarfafa ƙarshen tef tare da madaidaicin tef ɗin PTFE ko haɗin kebul na bakin karfe don hana cikakkiyar bawo bayan shigar da manne ta kafofin watsa labarai.
3. Ƙofar aminci - lokacin da za a guje wa tef ɗin PTFE gaba ɗaya
Ga matsananciyar kafofin watsa labarai masu zuwa, duk kaset tare da mannen halitta ba su da aminci :
Idan bututun yana isar da kayan masu ƙonewa kuma tarawa na tsaye na iya faruwa, zaɓi tef ɗin anti-a tsaye PTFE (yawanci baki mai duhu tare da filler carbon, tsayayyar saman 10⁶-10⁹ Ω) don watsar da cajin amintacce.
Takaitawa – PTFE Tape Zaɓin Jagoran Sauri don Aikace-aikacen Chemical
Idan muhallin ku...
Zaɓi...
Guji...
200-260 ° C, acid / alkalis / tururi
Silicone PSA + fiberglass substrate
Acrylic PSA (zai rage)
120-150 ° C, kwayoyin kaushi
Acrylic PSA (mai jurewa)
Silicone PSA (kumbura a cikin kaushi)
> 150 ° C, kwayoyin kaushi
Fim ɗin PTFE mai tsabta + gyaran injiniya
Duk wani tef ɗin m
HF, tafasa> 80% alkali, ClF₃
Rubutun PTFE kawai (babu m)
Duk wani tef tare da m Organic
Abubuwan da za a iya ƙonewa, haɗari a tsaye
Anti-static (carbon-cike) tef PTFE
Madaidaicin tef mara aiki
Rufe zare, cika tazara
Tef ɗin fim ɗin PTFE mai tsabta
Fiberglas-ƙarfafa tef
Aokai PTFE yana ba da cikakken kewayon kaset na PTFE don aikace-aikacen sinadarai - silicone PSA don sabis na acid mai zafi / alkali, acrylic PSA don juriya mai ƙarfi, da matakan anti-static. Tuntube mu tare da kafofin watsa labarai na sinadarai, kewayon zafin jiki, da buƙatun inji don zaɓin da aka keɓance.
Idan kana buƙatar cikakkun bayanai dalla-dalla, lokuta aikace-aikacen da keɓaɓɓen mafita don kewayon samfuran mu ciki har da PTFE high-zazzabi zane, PTFE high-zazzabi m tef, PTFE high-zazzabi raga bel, sumul zafi latsa bel, guda-gefe PTFE masana'anta, high-zazzabi resistant conveyor bel da zafi-resistant fiberglass: tuntube mu via da zane, don Allah
Kullum muna bin falsafar sabis na ƙwararru da mutunci, da zuciya ɗaya muna ba da mafita ta masana'antu ta tsaya ɗaya da sabis na abokin ciniki mai tunani ga duk abokan tarayya!
