Ngophuhliso olukhawulezayo lweshishini le-elektroniki, ukusetyenziswa kwee-PCBs kuye kwanda kakhulu.Nangona kunjalo, ukusetyenziswa kwayo kwizicelo ezahlukeneyo kuthetha ukuba iiPCB ziphantsi kweemeko ezahlukeneyo zokusingqongileyo.Apho i-PCB isesichengeni sokufuma okanye iikhemikhali ezirhabaxa, ukusebenza kunokuba yinkxalabo.Ngoko ke, i-PCB kufuneka igqunywe ukuyikhusela kwiimeko zokusingqongileyo.Olu khuselo lunokufezekiswa ngokutyabeka ngokusesikweni okanye ukugalela imbiza okanye nge-encapsulation.
I-potting kunye ne-encapsulation resins zihamba indlela ende ekuboneleleni ngamanqanaba aphezulu okhuseleko kwii-PCB.Enyanisweni, ukupakishwa kunika zombini iimpawu zombane kunye nokukhuselwa komatshini.Eli nqanaba liphezulu lokukhusela liqinisekiswa ngumlinganiselo omkhulu we-resin ejikeleze yonke iyunithi.Oku kukhulu kakhulu xa kuthelekiswa nokwaleka okusesikweni.Enyanisweni, i-potting kunye ne-encapsulation inika ukhuseleko olungenangqondo.Nangona kunjalo, ukubumba kunye ne-encapsulating resins kufuna ukuvavanywa kwiindawo ezininzi ukuze kumiselwe iinkcukacha zabo kunye nokufaneleka kokusetyenziswa.Olu vavanyo ludla ngokubandakanya ukubachanaba kwiimeko ezilawulwayo ze-atmospheri kwithuba lexesha.Ubungakanani, ubunzima kunye nokubonakala kwe-resin kunokubonwa ngaphambi nangemva kovavanyo ukujonga naluphi na utshintsho.
Ukongeza kwi-potting kunye ne-encapsulation resins, i-conformal coatings ingasetyenziswa ukukhusela ii-PCBs.Oku kwenziwa ngokusetyenziswa kwayo njengenwebu.Ekubeni ifilimu ithatha iphrofayili yebhodi, ayibangeli naluphi na utshintsho lwemilinganiselo okanye yongeze ubunzima obubalulekileyo.Ngapha koko, oku kunenzuzo kwiingubo ezihambelanayo kuba yenza kube lula ukwenza izixhobo eziphathwayo.Nangona kunjalo, iimvavanyo ziyafuneka ukuvavanya iipropathi zombane kunye nezomatshini zefilimu kwindawo esebenzayo.Iifilimu kufuneka zivavanywe phantsi kweemeko ezifana nokufuma, ubushushu, njl.
Ukwaleka ngokusesikweni kunye ne-encapsulation kunye neembiza ziyafumaneka ngobukhulu obahlukeneyo ukuze zilungele izicelo ezithile.Kwiimeko ezininzi ezisemgangathweni, i-conformal coating isebenza kakuhle kunye nokufaka i-resin encapsulation.Nangona kunjalo, ukuba iimeko zinzima, ukhetho lwengubo luya kuhluka.Ngokomzekelo, iingubo ze-acrylic zisebenza kakuhle kunye nokuvezwa rhoqo kukukhanya kwe-UV.Nangona kunjalo, iingubo ze-acrylic zisenokungasebenzi kakuhle kwiimeko ezinamaqondo aphezulu okufuma.Phantsi kwezi meko, iipeyinti ezingezizo eze-VOC zinokusebenza ngcono.
Ukusebenza kakuhle kwesixhobo kufunyanwa ngokusetyenziswa kweengqayi kunye neereyini zokugquma apho kukho uxinzelelo olukhulu lomatshini okanye iimeko ezirhabaxa zokusingqongileyo.I-silicone okanye i-polyurethane resins ziyaziwa ngokubonelela ngeqondo eliphezulu lokuguquguquka.Ngapha koko, apho amaqondo obushushu aphantsi kakhulu, iireyini zepolyurethane zikhethwa.Zikwafanelekile kwizixhobo ezifakwe emanzini.Kwimeko yokuvezwa kweekhemikhali, i-epoxy resins ikhethwayo.
Ngoko ke, kuyacaca ukuba ukhetho lwengubo lunento eninzi yokwenza kunye nommandla womzimba apho izixhobo zisebenza khona.Iireyithingi zokwaleka ngokusesikweni kwiiparamitha ezifana nokulula kunye nesantya sokucutshungulwa, ukugalela kunye neentyantyambo ze-encapsulating zikhethwa nangona kwiimeko zemozulu ezinzima.Iingubo ezihambelanayo nazo zikhethwa apho i-miniaturization kunye nokuphatheka kwesixhobo kuyimfuneko.Ngenxa yokuba zombini zibonelela ngeenzuzo ezicacileyo, uphononongo olucokisekileyo lweemfuno zakho ezizodwa lubalulekile ngaphambi kokuba wenze isigqibo malunga nokwaleka.
Ixesha lokuposa: Apr-19-2023