Ukusebenza kwe- PCB izothinteka yizici eziningi zangaphandle noma zemvelo, njengomswakama, izinga lokushisa elidlulele, isifutho sikasawoti kanye nezinto zamakhemikhali. Isembozo esivikelayo ifilimu ye-polymer embozwe ngaphezulu kwe-PCB ukuvikela i-PCB nezingxenye zayo ekugqwaleni nasekungcolisweni kwemvelo.

Ngokuvimbela ithonya lokungcola kanye nezici zemvelo, ukugqoka okuvikelekile kungavimbela ukugqwala kwama-conductor, amalunga e-solder kanye nemigqa. Ngaphezu kwalokho, kungase futhi kubambe iqhaza ekufakeni, ngaleyo ndlela kunciphise umthelela wokucindezeleka okushisayo kanye nomshini ezingxenyeni.

Izingubo zokuzivikela ziyingxenye ebalulekile yamabhodi wesifunda aphrintiwe. Ubukhulu ngokuvamile buphakathi kuka-3-8 mils (0.075-0.2 mm). Isetshenziswa kabanzi ku-aerospace, izimoto, ezempi, zasolwandle, izibani, izinto zikagesi zabathengi kanye nezimboni zezimboni.

Izinhlobo ze-PCB zokuvikela ezivikelayo

Ngokusho kokwakheka kwamakhemikhali, izindwangu zokuzivikela zingahlukaniswa zibe izinhlobo ezinhlanu, okungukuthi i-acrylic, i-epoxy, i-polyurethane, i-silicone ne-p-xylene. Ukukhethwa kokumboza okuthile kususelwa kuhlelo lwe-PCB kanye nezidingo zikagesi. Ngokukhetha izinto ezifanele kuphela i-PCB ingavikelwa ngempumelelo.

I-Acrylic protective coating:

I-Acrylic resin (AR) iyi-polymer ye-acrylic eyakhiwe ngaphambili encibilika ku-solvent futhi isetshenziselwe ukumboza ingaphezulu le-PCB. Izembatho zokuzivikela ze-Acrylic zingaxutshwa ngesandla, zifuthwe noma zicwiliswe kuma-acrylic resin coatings. Lesi isambatho esivame ukusetshenziswa kakhulu sokuvikela ama-PCB.

I-polyurethane protective coating:

I-polyurethane (UR) enamathelayo inokuvikela okuhle kakhulu emiphumeleni yamakhemikhali, umswakama kanye nokuhuzuka. I-Polyurethane (UR) yokuvikela inamathela kulula ukuyisebenzisa kodwa kunzima ukuyisusa. Akunconywa ukuyilungisa ngokuqondile ngokushisa noma i-soldering iron, ngoba izokhipha i-isocyanate yegesi enobuthi.

I-Epoxy resin (uhlobo lwe-ER):

I-Epoxy resin inezindawo ezinhle kakhulu zokugcina ukwakheka ezindaweni ezinokhahlo. Kulula ukuyisebenzisa, kodwa izolimaza isifunda lapho ihlakazwa. I-epoxy resin imvamisa iyingxube yezingxenye ezimbili ze-thermosetting. Izingxenye eziyingxenye eyodwa zelashwa ngokushisa noma imisebe ye-ultraviolet.

I-Silicone (uhlobo lwe-SR):

I-silicone (uhlobo lwe-SR) yokuzivikela isetshenziswa ezindaweni ezishisayo. Lolu hlobo lokumboza kulula ukulufaka futhi lunobuthi obuphansi, futhi lunemiphumela ephikisayo yokugqokwa kanye neyokuvikela umswakama. I-Silicone coatings iyinhlanganisela yengxenye eyodwa.

I-Paraxylene:

I-paraxylene coating isetshenziswa ku-PCB kusetshenziswa inqubo yokubeka umhwamuko wamakhemikhali. I-Paraxylene iba igesi lapho ishiselwa, futhi ngemva kwenqubo yokupholisa, ifakwa ekamelweni lapho ipholisa khona futhi ibe ifilimu elincanyana. Ifilimu ibe isimbozwa phezu kwe-PCB.

PCB umhlahlandlela wokukhetha enamathela ezivikelayo

Uhlobo lwe-conformal coating luncike ebukhulu be-coating edingekayo, indawo okufanele ihlanganiswe, kanye nezinga lokunamathela kwe-coating ebhodini kanye nezingxenye zalo.

Ungayisebenzisa kanjani i-coating ehlelekile ku-PCB?

Ukudweba ngesandla ngebhulashi

Ipendwe ngesandla nge-aerosol

Sebenzisa isibhamu sesifutho se-athomu ngokufutha ngesandla

I-automatic dip coating

Sebenzisa i-coater ekhethiwe