Lintho tse bonahalang ke boto ea khalase ea fiber ea fr4 epoxy

Lisebelisoa tsa fr4 epoxy khalase ea fiber fiber ke eng? Boitsebiso ke boto epoxy lehoakhoa? Ho molemo ho sebelisa lisebelisoa tse latelang:

K. Ke epoxy resin, e bolelang lebitso le akaretsang la lipolisi tse nang le lihlopha tsa epoxy. E haholo-holo a loketse bakeng sa mecha ea litaba le ka tlaase ho moo e senyang thepa. E na le khanyetso e hlahelletseng ea alkali mme e ka hanela ts’enyeho ea liasiti tse akaretsang (ntle le hydrofluoric acid). Tlhokahalo ea li-resin tsa epoxy ‘marakeng oa ts’enyeho e fokotsehile haholo. Lebaka le ka sehloohong ke hore li-resin tsa polyester tse sa tšeloang li-resin tse sa thibeleng ho bola li hlahile ka potlako mme ho na le mefuta e mengata. Mmaraka oa lapeng o na le qalo ea morao-rao ea li-resin tsa polyester tse sa tšeloang, kahoo epoxy resins E ntse e le e ‘ngoe ea mefuta e meholo ea lehoakhoa lefapheng la anti-corrosion. Litšobotsi tse ka sehloohong tsa epoxy lehoakhoa ke matla a kopanyang, ho fokotseha ho fokolang, sehlahisoa se phahameng sa brittleness le theko e phahameng. Mocheso oa tšebeliso ea lehoakhoa o phekotsoeng mochesong oa kamore ha o fete 80 ° C;

B. Ke moemeli ea folisang oa board ea fiber ea khalase ea fr4 epoxy) epoxy resin. Ho na le mefuta e fapaneng ea li-amine, li-anhydrides tsa acid, metsoako ea lehoakhoa joalo-joalo. Har’a tsona, metsoako ea amine ke eona e sebelisoang ka ho fetisisa. Li ka aroloa ka li-amine tse mafura, li-amine tse nkhang hamonate le li-amine tse fetotsoeng. Mefuta e mengata ea amine, joalo ka ethylenediamine, m-phenylenediamine, xylylenediamine, polyamide, diethylenetriamine le metsoako e meng, e na le chefo e ngata ebile e monko o monate, ka hona butle-butle e sebelisoa ke baemeli ba bacha ba se nang chefo le ba chefo e tlase (joalo ka: T31 , 590, C20, jj.) Ho fapana le hoo, mofuta ona oa ho folisa o ka phekoloa le tlasa metsi mokatong o metsi, kahoo batho ba ela hloko le ho rorisa ho feta;

C. Ke fr4 epoxy khalase fiberboard e hlapollang. Respo ea epoxy hangata e hlapolloa ka lisebelisoa tse sa sebetseng tse kang ethanol, acetone, benzene, toluene, xylene, jj. Lisebelisoa tse peli tse sa sebetseng li ka tsoakoa le ho sebelisoa, ka linako tse ling molemong oa ho fokotsa ho folisa metsoako e sebetsang hape joalo ka propylene oxide butyl ether, propylene oxide phenyl ether, polyglycidyl ether, jj le tsona li sebelisetsoa ho fokotseha ha sehlahisoa se feliloeng, ho fokotsa masoba le mapetso;

D. Ke polasetiki le moemeli ea thatafatsang bakeng sa fr4 epoxy khalase fiberboard. Epoxy lehoakhoa le bonolo ha le qeta ho fola, ‘me le na le tšusumetso e mpe ea ts’usumetso, ho koala matla le ho hanyetsa mocheso. Li-plasticizers le li-tougheners li tloaetse ho sebelisoa ho etsa Resin e eketsa polasetiki, e ntlafatsa ho thatafala, e eketsa ho kobeha matla le ho ama ho tiea;

E. Ke filler, phofo, aggregate e kopaneng, palo e mahoashe, le likhalase tsa khalase li kopane li bitsoa li-filler. Ho eketsa li-filler tse loketseng ho ka fokotsa litšenyehelo tsa sehlahisoa le ho ntlafatsa tšebetso ea sona. Palo ea sekhomaretsi ka har’a sekhomaretsi ka kakaretso ke lehoakhoa Palo ea 20-40% (boima ba ‘mele), chelete e ka ba ngata ha u lokisa putty, ka kakaretso e ka ba makhetlo a 2 ho isa ho a 4 palo ea lehoakhoa, phofo e sebelisoang hangata ke phofo ea quartz, porcelain phofo, ntle le phofo ea graphite, phofo e tala ea Rock, talcum phofo, phofo ea mica, jj.