Qhov sib txawv ntawm thermal silica gel thiab thermal roj

1. Dab tsi yog cov yam ntxwv ntawm thermal silica gel (thermal potting kua nplaum)?

Thermally conductive silicone feem ntau kuj hu ua thermally conductive potting kua nplaum lossis thermally conductive RTV kua nplaum. Nws yog ib qho qis - viscosity nplaim - retardant ob - cov khoom ntxiv hom silicone kub - ua cov kua nplaum nplaum. Nws tuaj yeem kho tau ntawm chav tsev kub lossis cua sov. Qhov kub siab dua, qhov kho tau sai. tshwj xeeb. Qhov sib txawv loj tshaj plaws ntawm thermal silicone roj yog tias thermal silicone tuaj yeem kho tau thiab muaj qee yam nplaum nplaum.

Thermally conductive silica gel (thermally conductive potting glue) yog ib yam ntawm silicone roj hmab, uas belongs rau cov kua roj hmab ntawm ib tug - Cheebtsam chav tsev kub vulcanization. Thaum raug huab cua, cov silane monomers nyob rau hauv nws condense los tsim ib lub network qauv, lub kaw lus yog hla - txuas, tsis tuaj yeem yaj thiab yaj, yog elastic, ua rubbery, thiab adheres rau cov khoom tib lub sijhawm. Nws cov thermal conductivity yog me ntsis siab dua li cov roj hmab zoo tib yam, tab sis nws qis dua li cov thermal conductive silicone roj, thiab ib zaug kho, nws nyuaj rau cais cov khoom sib txuas.

2. Dab tsi yog cov yam ntxwv ntawm thermal roj
Thermally conductive silicone roj feem ntau kuj hu ua "thermally conductive paste", "silicon paste", thermally conductive silicone roj yog ib hom thermal conductivity insulating silicone khoom, nws tsis kho, thiab tuaj yeem tswj lub xeev roj rau lub sijhawm ntev. ntawm qhov kub ntawm - 50 ° C - + 230 ° C thermally conductive khoom. Nws tsis tsuas yog muaj hluav taws xob zoo heev, tab sis kuj muaj cov thermal conductivity zoo, thiab tib lub sij hawm muaj cov roj sib cais (zoo li xoom), siab thiab kub tsis kam, dej tsis kam, ozone kuj, thiab huab cua aging kuj.

Nws tuaj yeem siv dav rau ntau yam khoom siv hluav taws xob, thiab qhov chaw sib cuag ntawm cov khoom siv cua sov (lub hwj chim raj, silicon tswj rectifiers, hluav taws xob cua sov pawg, thiab lwm yam) Lub luag hauj lwm ntawm tshav kub hloov nruab nrab thiab noo noo - pov thawj, plua plav - pov thawj, corrosion - pov thawj , poob siab - pov thawj thiab lwm yam khoom.

Nws yog tsim rau txheej txheej los yog tag nrho cov potting ntawm ntau yam khoom siv microwave xws li kev sib txuas lus hauv microwave, cov khoom siv kis tau tus mob microwave, microwave tshwj xeeb fais fab mov, thiab voltage stabilized fais fab mov. Cov khoom siv silicon no muab cov thermal conductivity zoo heev rau cov khoom siv hluav taws xob uas tsim kom muaj cua sov. Xws li: transistors, CPU sib dhos, thermistor, kub sensors, automotive electronic Cheebtsam, tsheb tub yees, fais fab modules, lub taub hau tshuab luam ntawv, thiab lwm yam.

3. Qhov zoo sib xws thiab qhov sib txawv ntawm thermal silica gel thiab thermal roj
Lawv muaj qhov sib xws: lawv txhua tus muaj thermal conductivity thiab rwb thaiv tsev, thiab lawv yog cov khoom siv thermal interface.

qhov txawv:

Thermally conductive silicone (thermally conductive potting glue): nplaum (ib zaug daig, nyuaj rau tshem tawm,

Yog li ntawd, nws yog feem ntau siv nyob rau hauv lub sij hawm uas tsuas yog ib tug - lub sij hawm sib txuas lus yuav tsum tau. Nws yog translucent, yaj ntawm qhov kub thiab txias (kua kua), solidifies (pom) ntawm qhov kub thiab txias, tsis tuaj yeem yaj thiab yaj, thiab elastic.

Thermally conductive silicone grease (thermally conductive paste): Adsorptive, non-sticky, paste semi-kua, non-volatile, non-curing (tsis thicken at low temperature, and does not become thinner at high temperature).

4. Daim ntawv thov Scope

Piv nrog rau silica gel, daim ntawv thov ntawm silicone roj yog dav dua. Ntau cov khoom lag luam thiab cov khoom siv hluav taws xob siv thermal conductive silicone roj qhov twg yuav tsum tau ua kom sov.

Ntxiv mus, muaj ntau ntau hom roj silicone, thiab tib neeg ntxiv qee qhov " impurities" rau cov ntshiab thermal conductive silicone roj los txhim kho nws cov thermal conductivity.

Cov impurities no yog graphite hmoov, txhuas hmoov, tooj liab hmoov thiab lwm yam.

Cov roj silicone ntshiab yog dawb huv, cov roj silicone sib xyaw nrog graphite yog xim tsaus, cov roj silicone sib xyaw nrog txhuas hmoov yog greyish thiab ci, thiab cov roj silicone tov nrog tooj liab hmoov yog xim daj me ntsis.