Dab tsi yog PCB Potting Compound

Potting feem ntau yog txheej txheem kawg hauv PCB los ua ke. Hmoov tsis zoo, nws yog cov txheej txheem tshuaj lom neeg tsis paub uas cov kws tsim hluav taws xob tsis tshua muaj kev paub nrog - thiab txheeb xyuas seb cov khoom sib txawv cuam tshuam li cas tuaj yeem yog qhov kev ua si tiag tiag ntawm kev sim-thiab-kev ua yuam kev yam tsis muaj kev taw qhia kom raug.

Koj tuaj yeem txuag koj tus kheej tons ntawm lub sijhawm thiab nyiaj txiag yog tias koj tau txais koj cov ducks nyob rau hauv kab ntawm qhov pib; kev sib tham dav dav thaum pib yog qhov kev txiav txim ntawm hnub!

Undeniably, potting systems khav ntau qhov zoo! Lawv yog cov dej tsis zoo, tsis muaj plua plav, npaj txhij tawm tsam qhov chaw hnyav thiab cov pa phem. Ntxiv rau, tshuaj erosion? Kev vibration? Shock resistance?

Potting muab cov khoom siv dag zog - yog li cov khoom siv hluav taws xob siab tuaj yeem ntim rau hauv qhov nruj - thiab cia peb tsis txhob hnov ​​​​qab txhim kho hluav taws xob rwb thaiv tsev thiab kev ua haujlwm kub.

Hmoov tsis zoo li nws yuav zoo li, potting thiab encapsulation feem ntau suav hais tias yog cov kauj ruam kawg hauv kev tsim khoom - zoo nkauj heev cuam tshuam los ntawm kev tsim hluav taws xob, ntau dua ntawm cov khoom siv tshuaj lom neeg.

Txawm li cas los xij, yog tias tus tsim hluav taws xob siv cov duab loj los ntawm ib hnub - tsis txhob hais txog kev paub nrog tus neeg muag khoom rau potting kua nplaum - lawv tuaj yeem txuag lawv tus kheej ntau lub sijhawm thiab nyiaj txiag.

Xaiv lub Potting Compound

Qhov nrov tshaj plaws potting compounds rau PCB boards yog ob feem sib xyaw. Yog tias lawv cov proportions yog lawm, cov kua sib xyaw ua ke ua ib qho khoom tsis muaj sijhawm. Kev sib xyaw kom raug yog qhov tseem ceeb: hloov qhov piv thiab koj tuaj yeem kho lub sijhawm tshuaj tiv thaiv kom txog thaum nws teeb tsa.

Khaws ib lub qhov muag ntawm ob qho khoom xyaw piv rau ib leeg tuav nws lub zog kho; uas ntxiv rau kom ntseeg tau tias txhua yam yog sib xyaw kom zoo thaum lub sij hawm sib tov tiv thaiv cov kua dej tsis zoo los ntawm kev puas tsuaj ntawm txoj kev. Ua tib zoo sib xyaw yog qhov tseem ceeb heev thaum nws los txog rau PCB sib dhos potting!

Xav txog kev khaws cia, kev ua haujlwm thiab kub siab heev ntawm cov khoom yog qhov yuav tsum tau ua. Qhov no yuav sai sai muab rau koj ntau yam khoom siv uas tsim nyog rau kev siv.

Tom qab ntawd koj tuaj yeem nqaim cov no los ntawm kev txheeb xyuas seb cov khoom siv tau zoo npaum li cas thaum raug qhov kub thiab txias dhau sijhawm; Nws yog ib qho tseem ceeb los xaiv ib yam dab tsi uas yuav tswj tau nws cov thermal kev ua tau zoo thoob plaws!

Raws li qhov kub thiab txias nce thiab nqis, hardening, expansion thiab contraction tshwm sim ntau heev thaum noj nyob rau hauv cov txheej txheem ntawm potting compounds rau hluav taws xob daim ntaub ntawv - uas ua rau lub sij hawm siv sij hawm rau customizing polyurethane ib lub suab txiav txim.

Los ntawm qhov sib txawv ntawm nws qhov hardness ntawm 3000 txog 90 D, koj tau lees tias qhov elasticity zoo nrog rau lub zog tsim kua muag! Hauv kev txiav txim siab, qhov deb dua koj thawb lub hnab ntawv, qhov ntau koj qhov kawg tshwm sim hauv cov ntsiab lus ntawm kev hloov pauv thiab kev cog lus yuav ua raws.

 

Piv txwv ntawm Potting Compounds

Potting compounds tuaj nyob rau hauv peb lub ntsiab ntau yam - epoxies, urethanes, thiab silicones. Txhua tus coj nws tus kheej peculiar lub zog thiab tsis muaj zog rau lub rooj, yog li nws them nyiaj kom paub koj tus kheej nrog lawv ua ntej daws qhov uas yog qhov tsim nyog tshaj rau koj cov kev xav tau. Peb yuav tham txog ntau yam potting tebchaw hauv qab no;

 

Epoxy

Epoxies yog qhov zoo tshaj plaws thaum nws los txog rau kev tshem tawm cov tshuaj lom neeg thiab yog, txawm tias qhov kub thiab txias - txog li ob puas degrees C! Lawv muab lub zog unbeatable thiab zoo heev hluav taws xob rwb thaiv tsev.

Zoo tagnrho rau kev siv hluav taws xob siab, tab sis yuav tsum tau saib xyuas; lawv tuaj yeem tau txais nkig zoo nkauj nyob rau hauv txias txias thiab cov cua sov tsim thaum lub sij hawm kho tuaj yeem ua ntau dhau rau qhov chaw rhiab heev. Tsis ntshai txawm hais tias: qee cov ntaub ntawv tsis tshua muaj kev ntxhov siab tshwm sim yog li koj tsis tas yuav skimp thaum nws los tiv thaiv SMT populated boards los ntawm cov khoom.

 

Urethanes

Urethanes yog qhov kev xaiv mus rau thaum koj xav tau qee yam hloov pauv me ntsis dua li epoxy - muab cov khoom sib xyaw ua ke rau tag nrho cov haujlwm tsis tshua muaj kev hnav thiab tsim kua muag.

Tsis tas li ntawd xwb, tab sis cov potting tebchaw no yeej tuav nyob rau hauv chillier climes, txawm mus rau -40 degrees Celsius! Qhov tsis zoo yog lawv tsis tuaj yeem ua rau kub kub lossis txhua yam tshuaj lom neeg heev, yog li khaws cia hauv siab.

 

silicones

Silicones tiag tiag muab rau koj ib co wiggle chav tsev kub-ntse, ntxiv rau lawv zoo nkauj resistant rau ntau cov tshuaj, dej thiab lwm yam. Txawm li cas los xij, ua cov khoom lag luam saum toj kawg nkaus txhais tau tias lawv tuaj nrog tus nqi - ceev faj yog tias koj txoj haujlwm xav tau qee yam nruj dua li roj hmab.

Ntxiv rau qhov ntawd, lawv cov coefficient siab ntawm thermal expansion tuaj yeem ua rau muaj teeb meem hauv cov xwm txheej hnyav uas xav tau los ntawm qee yam kev siv.

 

Lwm Cov Ntawv ntawm Potting Compounds

Lwm hom potting compounds tuaj yeem ua tau zoo rau qee qhov xwm txheej. Lawv feem ntau tau piav qhia raws li lawv qhov kawg siv lossis kho cov txheej txheem, uas tuaj yeem nqa nrog epoxy, urethane, lossis silicone bases. Yog li, yog tias koj tab tom cuam tshuam nrog qhov teeb meem tsis yooj yim uas yuav tsum tau muaj kev sib xyaw tshwj xeeb, ib qho ntawm cov no tsuas yog ua kom yuam kev!

UV-curing compounds yuav yog ib qho kev daws teeb meem zoo thaum koj raug thawb rau lub sijhawm. Cov tebchaw no tuaj yeem kho tau hauv lub vib nas this xwb, txawm hais tias lawv tuaj yeem tawm tsam nrog cov potting tuab ntxiv thiab encapsulation - yog li nws yuav tsum tau siv cov cua sov thib ob lossis dej noo kho ntawm cov khoom ntawd.

Potting tebchaw nrog cov cua kub-conductive fillers yog tsim rau thaum ib tug zoo tib yam potting compound yuav tsis txiav nws. Lawv muab qee qhov kev hloov pauv thermal tab sis tej zaum yuav xav tau kev pab ntxiv ntawm lub dab dej kom sov kom dissipate qhov kub tsis xav tau. Cov khoom sib xyaw tshwj xeeb no tuaj yeem ua kom tag nrho koj cov khoom nyob ib puag ncig thiab txias, txawm tias nyob hauv lub hnub ci ntsa iab.

Optical encapsulants ua lub luag haujlwm tseem ceeb thaum nws los txog rau kev teeb pom kev zoo thiab pom kev daws teeb meem - lawv yog pob tshab tag nrho, yog li koj tuaj yeem saib xyuas cov khoom hauv qab lossis cia lub teeb ci los ntawm.

Siv dav hauv LED teeb thiab tso saib ntau lawm, cov potting tebchaw no kuj ua hauj lwm nyob rau hauv lub hnub ci vaj huam sib luag biz vim lawv UV stability thiab hluav taws-retardant zoo. Txhua tus zoo siab, tshwj tsis yog tej zaum cov qhov muag tsis pom kev sim ua haujlwm tom qab txhua yam huab!

kawg

Kev txiav txim siab ntawm qhov zoo tshaj plaws potting compound tuaj yeem yog txheej txheem tsis yooj yim; ib tug yuav tsum coj mus rau hauv tus account Dej, tshuaj thiab txawm hluav taws xob rwb thaiv tsev nyob rau hauv thiaj li yuav tiv thaiv lub ntsiab. Tsis tas li ntawd, kev khiav hauj lwm kub ntawm cov khoom thiab cov neeg kho tshuab kev ntxhov siab kuj yuav tsum tau soj ntsuam txij li qee qhov sib txuas tau hloov pauv thaum hla lub iav hloov pauv kub.

Ntxiv rau, lub sijhawm rau kev tsim khoom thiab kho yuav tsum tsis txhob saib dhau. Thiab qhov kawg tab sis tsis kawg, xav txog opacity, xim lossis translucence yuav tsim nyog raws li qee qhov xwm txheej. Tag nrho cov no rau kev sib tw ua tiav cov hom phiaj xav tau!

 

Yog xav paub ntxiv txog daim ntawv qhia ua tiav rau PCB Potting Compound, koj tuaj yeem them mus ntsib Deepmaterial ntawm https://www.adhesivesmanufacturer.com/ yog xav paub ntau info.