Ukusebenza kwe PCB iya kuchaphazeleka ngezinto ezininzi zangaphandle okanye zokusingqongileyo, njengokufuma, ubushushu obugqithisileyo, isitshizi setyuwa kunye neekhemikhali. I-coating ekhuselayo yifilimu ye-polymer egqunywe kumphezulu we-PCB ukukhusela i-PCB kunye nezixhobo zayo kwi-corrosion kunye nongcoliseko lwendalo.

Ngokuthintela impembelelo yezinto ezingcolileyo kunye nezinto ezisingqongileyo, i-coating yokukhusela inokuthintela ukubola kwabaqhubi, i-solder joints kunye nemigca. Ukongezelela, inokudlala indima kwi-insulation, ngaloo ndlela inciphisa impembelelo yoxinzelelo lwe-thermal kunye nomatshini kumacandelo.

Iingubo zokukhusela ziyinxalenye ebalulekileyo yeebhodi zeesekethe eziprintiweyo. Ubunzima buhlala buphakathi kwe-3-8 mils (0.075-0.2 mm). Isetyenziswa kakhulu kwi-aerospace, izithuthi, umkhosi, ulwandle, ukukhanyisa, abathengi bombane kunye namashishini amashishini.

Iintlobo ze-PCB yokukhusela yokukhusela

Ngokokwakheka kweekhemikhali, iingubo zokukhusela zingahlulwa zibe ziintlobo ezintlanu, ezizezi: i-acrylic, i-epoxy, i-polyurethane, i-silicone kunye ne-p-xylene. Ukukhethwa kwengubo ethile kusekelwe kwisicelo sePCB kunye neemfuno zombane. Kuphela ngokukhetha izinto ezifanelekileyo ezinokuthi iPCB ikhuselwe ngokufanelekileyo.

I-Acrylic yokukhusela:

I-Acrylic resin (AR) yipolymer esele yenziwe ngaphambili enyibilikiswa kwisinyibilikisi kwaye isetyenziselwa ukugquma umphezulu wePCB. Iingubo zokukhusela ze-Acrylic zingaxutywa ngesandla, zitshizwe okanye zifakwe kwiingubo ze-acrylic resin. Le yeyona nto ixhaphakileyo yokukhusela i-PCBs.

Polyurethane ukukhusela:

I-polyurethane (i-UR) yokugqoka inokukhusela ngokugqwesileyo kwimiphumo yeekhemikhali, ukufuma kunye nokubetha. I-polyurethane (i-UR) yokukhusela i-coatings kulula ukuyisebenzisa kodwa kunzima ukuyisusa. Akukhuthazwa ukuyilungisa ngokuthe ngqo ngokutshisa okanye isinyithi se-solder, kuba iya kukhupha i-isocyanate yegesi enetyhefu.

I-Epoxy resin (uhlobo lwe-ER):

I-epoxy resin ineempawu ezigqwesileyo zokugcina imilo kwindawo enzima. Kulula ukuyisebenzisa, kodwa iya konakalisa isiphaluka xa ichithwa. I-epoxy resin idla ngokuba ngumxube we-thermosetting wamacandelo amabini. Iikhompawundi ezinenxalenye enye zinyangwa bubushushu okanye imitha ye-ultraviolet.

I-Silicone (uhlobo lwe-SR):

I-Silicone (uhlobo lwe-SR) iingubo zokukhusela zisetyenziselwa kwiindawo zokushisa eziphezulu. Olu hlobo lokugquma kulula ukulusebenzisa kwaye lunobuthi obuphantsi, kwaye luneziphumo ezichasayo kunye nobungqina bokufuma. Iingubo ze-silicone ziyi-component yecandelo elinye.

IParaxylene:

I-paraxylene coating isetyenziswa kwi-PCB kusetyenziswa inkqubo yokubeka umphunga wekhemikhali. I-Paraxylene iba yigesi xa ishushu, kwaye emva kwenkqubo yokupholisa, ifakwa kwigumbi apho ipholima kwaye ibe yifilimu encinci. Ifilimu ke igqunywe kumphezulu wePCB.

PCB isikhokelo sokukhetha ukutyabeka yokhuselo

Uhlobo lwengubo ehambelanayo luxhomekeke kubukhulu bengubo efunekayo, indawo emele igutyungelwe, kunye nomgangatho wokubambelela kwibhodi kunye namacandelo ayo.

Ungasifaka njani isigqubuthelo esisemthethweni kwiPCB?

Ukupeyinta ngesandla ngebrashi

Ipeyintwe ngesandla nge-aerosol

Sebenzisa umpu wokutshiza oneathom ukutshiza ngesandla

Automatic dip ukutyabeka

Sebenzisa i-coater ekhethiweyo