PCB zokutira zovomerezeka ndi PCB encapsulation, mungasankhe iti?

Ndi chitukuko chofulumira cha makampani opanga zamagetsi, kugwiritsa ntchito ma PCB kwawonjezekanso kwambiri.Komabe, kugwiritsidwa ntchito kwake pamapulogalamu osiyanasiyana kumatanthawuza kuti ma PCB amakhudzidwa ndi zinthu zosiyanasiyana zachilengedwe.Kumene PCB imakhudzidwa ndi chinyezi kapena mankhwala ovuta, ntchito ikhoza kukhala yodetsa nkhawa.Chifukwa chake, PCB iyenera kukhala yokutidwa kuti itetezedwe ku chilengedwe.Chitetezo ichi chitha kutheka ndi zokutira zofananira kapena kupotoza kapena ndi encapsulation.

Miphika ndi encapsulation resins amapita kutali popereka chitetezo chokwanira kwa ma PCB.M'malo mwake, kulongedza kumapereka mawonekedwe amagetsi komanso chitetezo chamakina.Kutetezedwa kwakukulu kumeneku kumatsimikiziridwa ndi kuchuluka kwa utomoni womwe ukuzungulira gawo lonselo.Izi ndizokulirapo poyerekeza ndi zokutira zofananira.M'malo mwake, poto ndi encapsulation zimapereka chitetezo chopanda nzeru.Komabe, miphika ndi encapsulating resins amafunika kuyesedwa m'malo ambiri kuti adziwe momwe akufunira komanso momwe angagwiritsire ntchito.Mayeserowa nthawi zambiri amaphatikizapo kuwawonetsa kumadera olamulidwa ndi mlengalenga pakapita nthawi.Kukula, kulemera kwake ndi maonekedwe a utomoni amatha kuwonedwa musanayambe komanso pambuyo pa mayesero kuti muwone kusintha kulikonse.

Kuphatikiza pa poto ndi encapsulation resins, zokutira conformal zitha kugwiritsidwanso ntchito kuteteza PCBs.Izi zimachitika pogwiritsira ntchito ngati membrane.Popeza filimuyo imatenga mbiri ya bolodi, sizimayambitsa kusintha kulikonse kapena kuwonjezera kulemera kwakukulu.M'malo mwake, izi ndizopindulitsa pazovala zofananira chifukwa zimapangitsa kuti zida zikhale zosavuta kunyamula.Komabe, kuyezetsa kumafunika kuwunika mphamvu zamagetsi ndi makina amakanema m'malo omwe akugwira ntchito.Mafilimu amafunika kuyesedwa pansi pazikhalidwe monga chinyezi, kutentha, ndi zina zotero kuti adziwe ngati filimuyi ili yoyenera kwa chikhalidwe chamlengalenga ichi.

Zopaka zofananira komanso zotsekera ndi kupotoza zimapezeka mumitundu yosiyanasiyana kuti zikhale zoyenera kugwiritsa ntchito zina.Pazinthu zambiri zokhazikika, zokutira zofananira zimagwira ntchito bwino komanso poto ndi utomoni encapsulation.Komabe, ngati mikhalidweyo ili yovuta, kusankha kwa zokutira kudzakhala kosiyana.Mwachitsanzo, zokutira za acrylic zimagwira ntchito bwino ndikuwunikira pafupipafupi ndi kuwala kwa UV.Komabe, zokutira za acrylic sizingagwire ntchito bwino m'malo okhala ndi chinyezi chambiri.Pansi pazimenezi, utoto wopanda VOC ukhoza kuchita bwino.

Kuchita bwino kwa chipangizocho kumachitika pogwiritsa ntchito potting ndi encapsulation resins pomwe pali kupsinjika kwamakina kapena zovuta zachilengedwe.Silicone kapena polyurethane resins amadziwika kuti amapereka kusinthasintha kwakukulu.M'malo mwake, komwe kutentha kumakhala kotsika kwambiri, utomoni wa polyurethane ndiwo umakondedwa.Amakhalanso abwino kwa zipangizo zomizidwa m'madzi.Pankhani yokhudzana ndi mankhwala, ma epoxy resins amakonda.

Choncho, n'zoonekeratu kuti kusankha zokutira kumakhudzana kwambiri ndi chilengedwe chomwe zipangizozo zimagwira ntchito.Miyezo yodzitchinjiriza ya magawo monga kumasuka ndi liwiro la kukonza, kupotoza ndi kubisa utomoni kumakondedwa ngakhale kuti kuli nyengo yoyipa.Zovala zofananira zimakondedwanso pomwe miniaturization ndi kusuntha kwa chipangizocho ndikofunikira.Chifukwa onsewa amapereka maubwino omveka bwino, kuunikanso mozama za zofunikira zanu zapadera ndikofunikira musanasankhe zokutira.