Kunyorova ndiyo yakajairika uye inoparadza chinhu kune PCB redunhu mabhodhi.Kunyanya kunyorova kunoderedza zvakanyanya kudzivirira kwekudzivirira pakati pemakondakita, kumhanyisa kuora kwekumhanya, kuderedza kukosha kweQ, uye corrode conductor.Isu tinowanzoona patina pane simbi chikamu chePCB matunhu mabhodhi, ayo anokonzerwa nemakemikari anoita pakati pesimbi mhangura uye mhute yemvura uye okisijeni iyo isina kuputirwa nependi inopindirana.
Uye mazana ezvinosvibisa anowanikwa zvisina tsarukano pamabhodhi edunhu akadhindwa anogona kungoparadza.Anogona kukonzera migumisiro yakafanana nekurwisa mwando—kuora kweerekitironi, kuora kwemakondukita, uye kunyange masekete mapfupi asingagadzirisiki.Izvo zvinosvibisa zvakanyanya zvinowanikwa mumagadzirirwo emagetsi zvinogona kunge zviri makemikari akasara kubva pakugadzira.Mienzaniso yezvinosvibisa izvi zvinosanganisira fluxes, solvent release agents, metal particles uye ingi dzekumaka.Kune zvakare mapoka makuru ehutsvina anokonzerwa nekubata vanhu zvisina hanya, semafuta emuviri wemunhu, mafingerprints, cosmetics uye zvisaririra zvekudya.Kune zvakare zvakawanda zvinosvibisa munzvimbo yekushanda, zvakaita semunyu wekupfapfaidza, jecha, mafuta, asidhi, humwe hupfu hunoparadza uye mold.
Coating conformal pendi pane akadhindwa edunhu mabhodhi uye zvikamu zvinogona kuderedza kana kubvisa zvemagetsi mashandiro ekuita degradation pazvinogona kukanganiswa nezvinhu zvakashata munzvimbo yekushanda.Kana rudzi urwu rwekuputira ruchigona kuchengetedza mhedzisiro yarwo kwenguva inogutsa, senge yakareba kupfuura hupenyu hwesevhisi yechigadzirwa, inogona kutorwa seyakazadzisa chinangwa chayo chekuputira.
Conformal anti-pendi yekuisa muchina
Kunyangwe iyo yekuputira layer iri mutete zvakanyanya, inogona kumira kuzunguzika kwemuchina uye kuzungunuka, kuvhunduka kwekushisa, uye kushanda patembiricha yakanyanya kusvika pamwero wakati.Hongu, hazvina kunaka kufunga kuti mafirimu anogona kushandiswa kupa simba remagetsi kana kusungirirwa kwakakwana kune zvikamu zvega zvakapinzwa mubhodhi redunhu rakadhindwa.Zvikamu zvinofanirwa kuisirwa nemuchina uye zvinofanirwa kuve neazvo akakodzera caulks, saka kune kaviri inishuwarenzi kurwisa tsaona.
1. Solvent-containing acrylic resin conformal anti-pendi (ikozvino ndiyo inonyanya kushandiswa uye yakakurumbira chigadzirwa mumusika).
Zvimiro: Iyo ine hunhu hwekuoma kwepasi, kukurumidza kurapa nguva, yakanaka matatu-uchapupu zvivakwa, mutengo wakachipa, ruvara rwakajeka, kuchinjika magadzirirwo uye nyore kugadzirisa.
2. Solvent-isina acrylic resin conformal pendi.
Zvimiro: UV kurapa, inogona kuomeswa mumasekonzi mashoma kusvika kumasekonzi gumi, ruvara rwuri pachena, magadzirirwo acho akaomarara, uye kuramba kwemakemikari corrosion uye kupfeka zvakare kwakanaka kwazvo.
3. Polyurethane conformal pendi.
Zvimiro: brittle texture uye yakanakisa solvent kuramba.Pamusoro pekuita kwayo kwakanakisa kwehunyoro-uchapupu, ine zvakare yakagadzikana kuita munzvimbo dzakaderera-tembiricha.
4. Silicone conformal pendi.
Zvimiro: Yakapfava elastic yekuputira zvinhu, yakanaka kudzoreredza kudzvinyirira, yakakwirira tembiricha kuramba ye200 madhigirii, nyore kugadzirisa.
Mukuwedzera, kubva pakuona kwemutengo uye kushanda, panewo chiitiko chemuchinjikwa pakati pemhando dziri pamusoro pezvipfeko zvinogadziriswa, zvakadai se-silicone-modified conformal coatings.
Nguva yekutumira: Oct-23-2023