Qhov sib txawv tseem ceeb ntawm VMQ thiab FVMQ yog VMQ muaj huab cua kub zoo piv rau FVMQ.
Lo lus VMQ sawv cev rau vinyl methyl silicone lossis silicone roj hmab. Cov khoom siv no yog qhov zoo tagnrho rau kev siv siab thiab qis-kub. Lub sij hawm FVMQ stands rau fluorosilicone roj hmab. Cov khoom no muaj ntau yam khoom ntawm silicone.
VMQ yog dab tsi?
Lo lus VMQ sawv cev rau vinyl methyl silicone lossis silicone roj hmab. Cov no yog cov elastomer tebchaw uas zoo tagnrho rau kev siv siab thiab qis-kub. Tsis tas li ntawd, cov tebchaw no muaj kev kub ntxhov thiab oxidative stability, nrog rau qhov ua tau zoo ntawm qhov kub thiab txias. VMQ cov ntaub ntawv tiv taus ntau yam tshuaj, huab cua, ozone thiab tshav ntuj (UV). Txawm li cas los xij, lawv tsis resistant rau superheated chav. Lawv lub cev lub cev yog feem ntau qis tab sis feem ntau yog khaws cia ntawm qhov kub thiab txias. Tsis tas li ntawd, cov ntaub ntawv VMQ muaj cov pa tsis zoo permeability thiab tsis tshua muaj zog rau cov roj ntxhia thiab cov kuab tshuaj hydrocarbon.
Qhov tseem ceeb dua, VMQ cov ntaub ntawv roj hmab yog cov cua sov tiv taus. Peb tuaj yeem soj ntsuam qhov ntsuas kub ua haujlwm rau cov khoom siv no li -60 txog 250 degrees Celsius thaum qee cov qib tshwj xeeb ntawm VMQ tuaj yeem tiv taus txog 300 degrees Celsius. Txawm li cas los xij, cov khoom no cuam tshuam los ntawm qhov kub kub uas nyob ntawm lossis siab dua 120 degrees Celsius. Qhov kub kub no tuaj yeem ua rau hydrolysis ntawm cov khoom zoo li degradation.
Daim duab 01: Liquid Silicone Rubber
Comparatively, VMQ elastomers yog kim kim; Yog li, cov khoom siv no tsuas yog siv thaum peb xav tau kev tiv thaiv zoo rau cov tshuaj, oxygen, huab cua, thiab hloov pauv ntawm qhov kub thiab txias. Yog li, VMQ cov ntaub ntawv yog siv feem ntau hauv kev lag luam tshuaj, kev lag luam kho mob, hluav taws xob, kev lag luam tsheb, thiab kev lag luam aerospace. Kev siv ntau tshaj plaws ntawm cov tshuaj no yog kev tsim cov khoom siv phais, cov ntaub qhwv lub qhov txhab, ua pwm, xaim, thiab cable insulations, gaskets, seals, thiab tubings.
FVMQ yog dab tsi?
Lub sij hawm FVMQ sawv cev rau fluorosilicone roj hmab lossis fluorovinylmethylsiloxane roj hmab. Cov khoom siv no muaj ntau yam khoom ntawm silicone roj hmab khoom. E.g. FVMQ cov ntaub ntawv muaj cov khoom zoo sib xws thiab lub cev zoo li VMQ cov roj hmab, thiab lawv kuj muaj cov tshuaj tiv thaiv zoo rau cov kua qaub, cov tshuaj alkaline, cov kua dej tsis zoo xws li roj av, roj roj, roj roj, roj roj thiab roj silicone. Tsis tas li ntawd, peb tuaj yeem pom tsuas yog qhov ncaj ncees tiv thaiv ntawm cov kua nruab nrab xws li cawv thiab tsis zoo ntawm ketones, aldehydes, amines, thiab cov kua dej nres. Ntxiv mus, cov khoom siv no muaj cov cua kub qis dua piv rau cov roj hmab silicone.
Qhov tseem ceeb tshaj, FVMQ cov khoom muaj cua sov thiab oxidative stability thiab zoo heev uas tsis tshua muaj kub yooj. Cov khoom no kuj tiv taus cua sov, ozone, thiab tshav ntuj. Tsis tas li ntawd, cov khoom siv no tuaj yeem muab qhov kev ua haujlwm kub ntau uas sib piv ntau dua li lwm cov fluorocarbon rubbers.
Thaum xav txog cov ntawv thov ntawm FVMQ roj hmab, cov ntawv thov feem ntau yog nyob rau hauv daim ntawv thov kev sib khi uas peb xav tau kev tiv thaiv rau cov roj kub, roj, thiab roj roj raws li cov roj ntsha. Nquag, kev siv cov khoom siv no tsuas yog siv rau cov ntawv thov zoo li qub vim tsis muaj kev puas tsuaj tsis zoo, lub zog tsim kua muag tsawg thiab tsuas yog ncaj ncees flex cracking kuj.
Qhov txawv ntawm VMQ thiab FVMQ yog dab tsi?
Cov ntsiab lus VMQ thiab FVMQ sawv rau ob hom sib txawv ntawm silicone roj hmab. VMQ stands rau vinyl methyl silicone los yog silicone roj hmab, thaum FVMQ stands rau fluorosilicone roj hmab los yog fluorovinylmethylsiloxane roj hmab. Qhov sib txawv tseem ceeb ntawm VMQ thiab FVMQ yog tias VMQ muaj huab cua kub zoo piv rau FVMQ.
Cov ntawv qhia hauv qab no qhia qhov sib txawv tseem ceeb ntawm VMQ thiab FVMQ.
Summary – VMQ vs FVMQ
Cov ntsiab lus VMQ thiab FVMQ sawv rau ob hom sib txawv ntawm silicone roj hmab. Qhov sib txawv tseem ceeb ntawm VMQ thiab FVMQ yog tias VMQ muaj huab cua kub zoo piv rau FVMQ.
