Cov khoom siv twg yog fr4 epoxy iav fiber board

Cov khoom siv twg yog fr4 epoxy iav fiber board? Cov khoom siv twg yog epoxy resin board? Nws yog qhov zoo dua los siv cov ntaub ntawv hauv qab no:

A. Nws yog epoxy cob, uas hais txog lub npe dav ntawm cov polymers uas muaj epoxy pawg. Nws yog qhov tsim nyog tshaj plaws rau kev tshaj xov xwm nrog cov yam ntxwv tsis xeb. Nws muaj qhov ua tau zoo alkali thiab tuaj yeem tiv taus qhov xeb ntawm cov kua qaub (tshwj tsis yog hydrofluoric acid). Qhov kev thov rau epoxy resins hauv kev lag luam corrosion tau raug txo qis heev. Qhov laj thawj tseem ceeb yog tias cov polyester uas tsis muaj ntxhiab nyob rau hauv cov tshuaj tiv thaiv xeb tau txhim kho sai thiab muaj ntau yam sib txawv. Kev lag luam hauv tsev muaj qhov pib lig ntawm cov roj hmab tsis txaus, yog li epoxy resins Nws tseem yog ib qho ntawm cov ntsiab lus tseem ceeb hauv kev tiv thaiv kev xeb. Cov yam ntxwv tseem ceeb ntawm epoxy resin yog kev sib zog ua kom muaj zog, qis qis, cov khoom lag luam brittleness, thiab tus nqi siab. Kev siv qhov kub ntawm cov tshuaj kho hauv chav sov tsis tshaj 80 ° C;

B. Nws yog tus neeg sawv cev tua ntawm fr4 epoxy iav fiber board) epoxy cob. Muaj ntau ntau hom amines, kua qaub anhydrides, cov tshuaj sib txuas thiab lwm yam. Ntawm lawv, cov tshuaj amine feem ntau siv. Lawv tuaj yeem muab faib ua rog amines, ntxhiab amines thiab hloov amines. Ntau hom amines, xws li ethylenediamine, m-phenylenediamine, xylylenediamine, polyamide, diethylenetriamine thiab lwm yam sib txuas, muaj tshuaj lom thiab ntxhiab, yog li lawv tau maj mam siv los ntawm cov tshuaj tsis muaj tshuaj lom thiab tsis muaj tshuaj lom tsawg (xws li: T31) , 590, C20, thiab lwm yam) hloov chaw, hom tshuaj tua kab mob no tuaj yeem kho tau txawm tias nyob hauv dej ntawm txheej txheej ntub ntub, yog li tib neeg tau them nyiaj ntau dua thiab mloog thiab qhuas;

C. Nws yog fr4 epoxy iav fiberboard diluent. Cov tshuaj epoxy feem ntau yog diluted nrog cov tshuaj tsis haum xws li ethanol, acetone, benzene, toluene, xylene, thiab lwm yam. phenyl ether, polyglycidyl ether, thiab lwm yam.

D. Nws yog cov yas thiab cov neeg ua haujlwm tawv rau fr4 epoxy iav fiberboard. Qhov yooj yim epoxy cob yog nkig ntau dua tom qab kho, thiab muaj qhov tsis zoo cuam tshuam qhov tawv, khoov lub zog thiab tiv tshav kub. Cov yas yas thiab cov tawv tawv feem ntau siv los ua Resin ua cov yas ntxiv, txhim kho qhov tawv, ua kom muaj zog khoov thiab cuam tshuam qhov tawv;

E. Nws yog cov muab tub lim, hmoov, sib sau ua ke, sib sau ua ke, thiab iav flakes tau sau ua ke ua cov muab tub lim. Ntxiv cov tshuaj pleev kom tsim nyog tuaj yeem txo tus nqi ntawm cov khoom thiab txhim kho nws cov kev ua tau zoo. Tus nqi ntawm cov muab tshuaj txhuam hauv cov kua nplaum feem ntau yog cov kua 20-40% (qhov hnyav), qhov nyiaj tuaj yeem ntau dua thaum npaj cov tshuaj txhuam hniav, feem ntau tuaj yeem yog 2 txog 4 zaug ntawm cov tshuaj, feem ntau siv cov hmoov yog cov hmoov quartz, cov plooj (porcelain) hmoov, ntxiv rau graphite hmoov, ci ntsa iab ntsuab Pob zeb hmoov, talcum hmoov, mica hmoov, thiab lwm yam.