Momwe Mungayesere Kupaka Kwabwino Kwambiri Kwa Silicone Kwa PCB?

Pali zosiyanasiyana silicone conformal zokutira katundu pamsika. Kusiyanasiyana kwamankhwala azinthuzo kumakwaniritsa zofuna zosiyanasiyana m'mafakitale osiyanasiyana. Zomwe mumasankha ziyenera kutengera zomwe mukufuna, ndipo mutha kuyang'ana pazifukwa zingapo kuti muwonetsetse kuti muli ndi zabwino kwambiri kumapeto kwa tsiku. Mukamayesa silicone yabwino kwambiri pakuphimba kwanu, muyenera kuyang'ana izi:

Kuzindikira 

Zovala zowoneka bwino zimabwera ndi ma viscosity osiyanasiyana, omwe amathandizira kukwaniritsa ntchito yamisonkhano ndi kukonza zomwe amafuna. Momwe silicone imapitira, mutha kusankha kukhuthala kotsika pazosowa zanu zopanga mwachangu. Zovala zotsika kachulukidwe kakang'ono zimathandizira njira zopangira liwiro, kuphatikiza kupopera mbewu mankhwalawa pamanja ndi pamanja, jetting, ndi njira zoyendera. Zogulitsa zina za silikoni zimakhala ndi mamasukidwe apamwamba kuti ziwonjezeke kuwongolera mtunda ndi liwiro la kuyenda. Kuwongolera kotereku kumathandiza kupewa kufalikira kumadera aliwonse 'osapita' pa bolodi. Chofunikanso kudziwa ndikuti ma silicones okhala ndi kukhuthala kwapamwamba amapanga zigawo zokhuthala, ena mpaka amapereka malaya okhazikika pamalo owoneka bwino.

Chiritsani mbiri 

Zina mwa ubwino wosankha silicone conformal zokutira ndi mphamvu zake zowumitsa msanga. Zopangira zokutira kunja uko zimabwera mu mawonekedwe ochiritsira osinthika, ndipo mutha kugwiritsa ntchito izi kuti mupeze yankho labwino kwambiri la mzere wanu wopanga, kugwiritsa ntchito, ndi kukhazikitsidwa. Silicone imatha kukhala ndi mawonekedwe ochiritsira chinyezi mwachangu, zomwe zimapangitsa kuti zokutira zichiritse ngakhale kutentha kwambiri. Ndi yankho laulere lomwe lingakuthandizeni kuti musunthe mwachangu mzere wanu wopanga. Mbiriyi ndiyabwino kwambiri pazopanga zapamwamba.

Palinso nthawi yotalikirapo yogwira ntchito yochiritsa chinyezi yomwe imalola kuti zokutira zichiritse kutentha kwachipinda ndikulola kuti zinthu zambiri ziziyenda pama board ovuta. Ngati pulogalamu yanu ikufuna zokutira zokulirapo, mbiriyi ndiyabwino kwambiri. Mbiri yochizira kutentha ndiyo njira yomaliza ya zokutira za silicone. Zogulitsa zambiri zimazitcha ngati machiritso olamula, ndipo zomwe zili pansi pa mbiriyo zimachiritsa pakangotha ​​mphindi zisanu. Mbiriyi imagwiritsa ntchito kutentha ndipo imatha kupangitsa kuti pakhale kupsinjika pang'ono pazigawo za board board, makamaka panthawi yanjinga yotentha.

kuuma 

Zovala zofananira za silicone zimatha kupereka modulus yocheperako poyerekeza ndi zinthu za organic conformal. Choncho, ndizoyenera kuchepetsa kupsinjika maganizo, makamaka pamawaya ang'onoang'ono abwino kapena malo olowa nawo omwe ali okhudzidwa. Komanso, ndi chemistry yake yosunthika, silikoni imathandizira zokutira zolimba ndi kukana kwa abrasion, pafupifupi kufanana ndi urethane ndi acrylic solution. Posankha zokutira za silicone, muli ndi mwayi wopita ku kuuma koyenera kwambiri. Kulimba kumagawidwa kukhala kofewa, komwe kuli koyenera mawaya abwino ndi zida zowuma zomwe zimatha kutenthedwa ndi njinga yamoto, komanso brittle yomwe imapereka chitetezo chophatikizika ndi kupsinjika m'malo ovuta ngati omwe ali ndi fumbi, kugwedezeka, kukhudzidwa, ndi chinyezi. Ndipo cholimba chimapereka kusinthasintha kwakukulu ndi magwiridwe antchito odalirika pa kutentha kochepa kapena kokwera.

Mukamayang'ana zokutira zodalirika za silicone, muyenera kugwira ntchito ndi wopanga kapena mtundu womwe umalabadira ukadaulo wazogulitsa ndi kukhazikika komanso kudziwa zambiri ndi zokutira zofananira. Kugwira ntchito ndi makampani oterowo kudzatsimikizira kuti mudzakhala ndi zinthu zoyenera kwambiri ndikupeza thandizo lililonse lofunikira.

Kuti mudziwe zambiri za momwe mungawunikire zokutira bwino silikoni conformal kwa pcb, mutha kupita ku DeepMaterial pa https://www.epoxyadhesiveglue.com/what-is-silicone-conformal-coating-for-pcb/ chifukwa Dziwani zambiri.