FR4 pawg thawj coj saib epoxy board

FR4 pawg thawj coj saib epoxy board tseem hu ua epoxy iav fiber board, epoxy phenolic laminated iav ntaub board, qauv 3240, epoxy resin feem ntau yog hais txog cov organic polymer compound uas muaj ob los yog ntau tshaj epoxy pawg nyob rau hauv lub molecule, tshwj tsis yog rau ob peb, lawv cov txheeb ze molecular loj tsis siab. . Cov qauv molecular ntawm epoxy resin yog tus cwj pwm los ntawm kev muaj cov epoxy pawg hauv cov saw molecular, thiab cov epoxy pawg tuaj yeem nyob ntawm qhov kawg, nruab nrab lossis cyclic qauv ntawm cov saw hlau molecular. Vim yog cov epoxy active pab pawg nyob rau hauv cov qauv molecular, lawv tuaj yeem sib txuas nrog ntau hom tshuaj tua kab mob los tsim cov polymers insoluble thiab infusible nrog peb txoj hauv kev network.

Daim Ntawv Thov Nta:

1. Ntau hom ntawv. Ntau yam ntawm cov resins, curing agents, thiab modifier systems muaj nyob rau kom haum rau txhua daim ntawv thov daim ntawv yuav tsum tau, xws li los ntawm tsawg viscosities mus rau siab melting point solids.

2. Yooj yim kho. Siv ntau yam tshuaj tua kab mob, epoxy resin tshuab tuaj yeem kho tau hauv qhov kub ntawm 0 txog 180 ° C.

3. Muaj zog adhesion. Lub hav zoov ntawm polar hydroxyl thiab ether bonds muaj nyob rau hauv cov saw molecular ntawm epoxy resin ua rau nws muaj siab adhesion rau ntau yam khoom. Epoxy resins muaj tsawg shrinkage thaum kho thiab ua kom muaj kev ntxhov siab me ntsis, uas tseem ua rau kom muaj zog adhesion.

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, yam tsis tso dej los yog lwm yam khoom los ntawm cov khoom tsis zoo. Lawv pom qhov qis qis heev (tsawg dua 2%) thaum kho dua piv rau unsaturated polyester resins thiab phenolic resins.

1. Cov khoom siv dag zog. Cov txheej txheem kho epoxy resin muaj cov cuab yeej zoo heev.