Dab tsi yog qhov cuam tshuam rau qhov shrinkage tus nqi ntawm fluororubber phaj khoom
Mar 25, 2023| Muaj ntau yam uas cuam tshuam rau qhov shrinkage tus nqi ntawm cov khoom fluororubber phaj, nrog rau cov khoom siv roj hmab, cov khoom zoo (cov nqi sib txawv ntawm cov khoom sib txawv), vulcanization kub, thiab cov txheej txheem txheej txheem. Cov hauv qab no yog ob peb yam tseem ceeb:
1. Vulcanized roj hmab hardness Lub shrinkage ntawm roj hmab txo thaum lub hardness nce, nrog tus nqi me me ntawm 75-85 (Shore A hardness).
2. Various rubbers with different molecular structures have different effects on shrinkage. For example, when adding the same amount of reinforcing agent, the shrinkage of various vulcanizates vulcanized at different temperatures is fluororubber>silicone rubber>ethylene propylene diene monomer>styrene butadiene rubber>natural rubber>nitrile rubber>neoprene. Lub shrinkage ntawm ob peb rubbers txawv ntawm qhov sib txawv kub.
3. Cov fillers nyob rau hauv lub filler compound kuj muaj kev cuam tshuam loj rau lub shrinkage ntawm vulcanizate. Tshwj xeeb tshaj yog rau fillers nrog ib tug loj npaum li cas ntawm muab tub lim, lub shrinkage ntawm vulcanizate txo nrog qhov nce ntawm tus nqi. Tsis tas li ntawd, ntau hom fillers muaj qhov sib txawv ntawm qhov shrinkage ntawm vulcanizates. Vim hais tias cov kab hluav taws xob kub shrinkage coefficient ntawm cov muab tub lim yog me me, nws nyob ze rau cov pwm hlau.
4. Curing kub Curing kub kuj muaj qee yam cuam tshuam rau lub shrinkage ntawm cov khoom. Raws li qhov kub nce, qhov curing shrinkage kuj yuav nce. Txo qhov curing kub kom tsim nyog tuaj yeem txo qhov shrinkage.
5. Thaum lub moj khaum cov khoom siv fluoroelastomer board cov khoom lag luam muaj cov qauv ntaub, qhov shrinkage tus nqi ntawm cov paj rwb yog 0.2 feem pua - 0.4 feem pua, qhov shrinkage tus nqi ntawm cov khoom polyester moj khaum yog {{ 5}}.4 feem pua - 1.5 feem pua , thiab tus nqi shrinkage ntawm cov khoom siv nylon yog 0.8 feem pua - 1.8 feem pua . Qhov ntau txheej, qhov me me qhov shrinkage. Qhov me me ntawm qhov shrinkage tus nqi ntawm cov khoom fluoroplastic phaj cov khoom embedded nyob rau hauv cov hlau, lub shrinkage tus nqi ntawm sab uas tig rau cov hlau yog 0-0.4 feem pua, thiab cov shrinkage tus nqi ntawm cov khoom fluoroplastic phaj tig rau sab unilateral yog {{ 15}}.4 feem pua - 1 0 feem pua .