Cov ntawv rwb thaiv tsev hais txog cov organic polymer tebchaw uas muaj ob lossis ntau pawg epoxy hauv cov molecule. Tsuas yog qee qhov, lawv cov txheeb ze molecular hnyav tsis siab. Cov qauv molecular ntawm epoxy resin yog tus cwj pwm los ntawm kev muaj cov epoxy pawg hauv cov saw molecular. Cov pab pawg epoxy tuaj yeem nyob ntawm qhov kawg, nruab nrab lossis lub nplhaib qauv ntawm cov saw hlau molecular. Vim tias cov pab pawg epoxy nquag nyob rau hauv cov qauv molecular, lawv tuaj yeem raug kev sib txuas sib txuas nrog ntau hom tshuaj tua kab mob los tsim cov khoom siv tsis zoo, infusible polymers nrog peb-seem network qauv.
Cov yam ntxwv ntawm cov ntawv insulating:
1. Ntau hom ntawv. Ntau yam resins, curing agents, thiab modifier systems yuav luag ua tau raws li qhov yuav tsum tau ntawm ntau daim ntawv thov rau daim ntawv, xws li los ntawm tsis tshua muaj viscosity mus rau siab melting point solids.
2. Yooj yim kho. Los ntawm kev xaiv ntau yam tshuaj tua kab mob, epoxy resin system tuaj yeem kho yuav luag nyob rau hauv qhov kub ntawm 0 txog 180 degree .
3. Muaj zog adhesion. Lub xub ntiag ntawm polar hydroxyl pawg thiab ether bonds muaj nyob rau hauv epoxy resin molecular saw ua rau nws muaj siab adhesion rau ntau yam khoom. Cov epoxy resin muaj tsawg shrinkage thaum lub sij hawm kho thiab ua rau me me nyob rau hauv kev ntxhov siab, uas kuj pab txhim kho lub adhesion zog.
4. Tsawg shrinkage. Cov tshuaj tiv thaiv ntawm epoxy resin thiab tus neeg sawv cev kho siv yog ua los ntawm cov tshuaj tiv thaiv ncaj qha los yog lub nplhaib-qhib polymerization ntawm epoxy pawg nyob rau hauv cov molecule resin, tsis tso dej los yog lwm yam khoom los ntawm cov khoom tsis zoo. Piv nrog unsaturated polyester resins thiab phenolic resins, lawv pom tsawg heev shrinkage (tsawg dua 2%) thaum lub sij hawm kho.
5. Mechanical zog. Lub kho epoxy resin system muaj cov cuab yeej zoo heev.
