Ts’ebetso ea PCB e tla angoa ke lintho tse ngata tsa ka ntle kapa tsa tikoloho, tse kang mongobo, mocheso o feteletseng, ho fafatsa letsoai le lintho tsa lik’hemik’hale. Tšireletso e sireletsang ke filimi ea polymer e koahetsoeng ka holim’a PCB ho sireletsa PCB le likarolo tsa eona ho senya le tšilafalo ea tikoloho.

Ka ho thibela tšusumetso ea lintho tse silafatsang le maemo a tikoloho, lesela le sireletsang le ka thibela ho bola ha li-conductor, manonyeletso a solder le mela. Ho phaella moo, e ka boela ea phetha karolo ea ho kenya letsoho, kahoo e fokotsa tšusumetso ea khatello ea mocheso le ea mechine likarolong.

Liaparo tse sireletsang ke karolo ea bohlokoa ea mapolanka a potoloho a hatisitsoeng. Botenya hangata bo pakeng tsa 3-8 mils (0.075-0.2 mm). E sebelisoa haholo sebakeng sa lifofane, likoloi, sesole, likepe, mabone, lisebelisoa tsa motlakase tsa bareki le liindasteri tsa indasteri.

Mefuta ea tšireletso ea PCB

Ho ea ka sebopeho sa lik’hemik’hale, liaparo tse sireletsang li ka aroloa ka mefuta e mehlano, e leng acrylic, epoxy, polyurethane, silicone le p-xylene. Khetho ea ho roala ho khethehileng e itšetlehile ka kopo ea PCB le litlhoko tsa elektronike. Ke feela ka ho khetha thepa e loketseng PCB e ka sireletsoa ka katleho.

Tšireletso ea Acrylic:

Acrylic resin (AR) ke polymer e entsoeng esale pele ea acrylic e qhibilihang ka har’a motsoako ebe e sebelisoa ho koahela bokaholimo ba PCB. Liaparo tse sireletsang tsa Acrylic li ka phunyeletsoa ka letsoho, tsa fafatsoa kapa tsa kenngoa ka har’a liphahlo tsa acrylic resin. Ena ke eona e sebelisoang ka ho fetesisa ea tšireletso bakeng sa li-PCB.

Polyurethane e sireletsang:

Seaparo sa polyurethane (UR) se na le tšireletso e babatsehang khahlanong le liphello tsa lik’hemik’hale, mongobo le ho senya. Liaparo tse sireletsang tsa polyurethane (UR) li bonolo ho li sebelisa empa ho thata ho li tlosa. Ha e khothalletsoe ho e lokisa ka ho toba ka mocheso kapa tšepe ea soldering, hobane e tla lokolla khase e chefo ea isocyanate.

Epoxy resin (mofuta oa ER):

Epoxy resin e na le thepa e ntle ea ho boloka sebopeho libakeng tse thata. Ho bonolo ho e sebelisa, empa e tla senya potoloho ha e qhaqhoa. Epoxy resin hangata ke motsoako oa likarolo tse peli tsa thermosetting. Metsoako ea karolo e le ‘ngoe e phekoloa ke mocheso kapa mahlaseli a kotsi.

Silicone (mofuta oa SR):

Liaparo tse sireletsang tsa silicone (mofuta oa SR) li sebelisoa libakeng tse phahameng tsa mocheso. Mofuta ona oa ho roala o bonolo ho o sebelisa ebile o na le chefo e tlaase, ‘me o na le liphello tse khahlanong le ho apara le ho thibela mongobo. Liaparo tsa silicone ke motsoako oa karolo e le ‘ngoe.

Paraxylene:

Ho roala paraxylene ho sebelisoa ho PCB ho sebelisoa mokhoa oa ho beha mouoane oa lik’hemik’hale. Paraxylene e fetoha khase ha e futhumala, ‘me ka mor’a ts’ebetso ea ho pholisa, e kenngoa ka kamoreng moo e polymerizes’ me e fetoha filimi e tšesaane. Joale filimi e koahetsoe ka holim’a PCB.

Tataiso ea khetho ea tšireletso ea tšireletso ea PCB

Mofuta oa ho roala ka mokhoa o ts’oanang o itšetlehile ka botenya ba ho roala ho hlokahalang, sebaka se lokelang ho koaheloa, le tekanyo ea ho khomarela boto le likarolo tsa eona.

Mokhoa oa ho sebelisa coating e hlophisitsoeng ho PCB?

Ho penta ka letsoho ka borashe

E pentiloe ka letsoho ka aerosol

Sebelisa sethunya sa spray sa atomized bakeng sa ho fafatsa ka letsoho

Ho roala ka mokhoa o itekanetseng

Sebelisa coater e khethehileng