Thermal pads muaj siab thermal conductivity, zoo heev rwb thaiv tsev, thiab tsis kam mus rau siab thiab tsis kub. Lawv ua rau cov huab cua sib txawv ntawm cov cua sov- tsim cov khoom siv thiab cov dab dej kub lossis cov hauv paus hlau. Lawv elasticity thiab elasticity tso cai rau lawv los npog qhov chaw tsis sib xws. Yog li, koj yuav ua li cas thiaj nrhiav tau lub thermal ncoo rau koj cov kev xav tau ntawm ntau txoj kev xaiv?
1. Qauv
Feem ntau, ntxiv cov khoom siv txhawb zog ua rau lub cev muaj zog tab sis txi qee qhov thermal conductivity. Rau cov khoom loj, qhov no muaj kev cuam tshuam me ntsis, tab sis nws cuam tshuam rau cov khoom thinner (<1mm). Unreinforced pads tend to elongate, and in severe cases, break. Pads with reinforcing materials have high strength and do not change size. Silicone cloth pads offer puncture resistance and better electrical insulation.
2. Thermal conductivity
Kev xaiv ntawm thermal conductivity rau lub ncoo yog nyob ntawm daim ntawv thov ib puag ncig thiab yuav tsum tau ua. Cov kev xav tshwj xeeb muaj xws li:
Ua ntej, cov cua sov tsim los ntawm cov khoom siv;
Qhov thib ob, tsim qhov sib txawv thickness, qhov xav tau qhov kub thiab txias, thiab qhov kub hloov mus rau qhov chaw.
3. Thickness
Lub thickness ntawm gasket feem ntau yuav tsum tau xaiv raws li qhov tsim qhov sib txawv. Nws raug pom zoo kom compress lub thickness los ntawm 20% -50% kom ua tiav lub thickness ze rau qhov sib txawv thickness.
Piv txwv li, yog tias qhov sib txawv thickness yog 1.5mm, 2.0mm cov khoom raug pom zoo. Vim li cas? Vim tias 2.0mm cov khoom, tom qab 25% compression, yuav phim qhov sib txawv thickness. Qhov tuab no ua kom qhov sib txawv yog qhov tsis muaj kev ntxhov siab ntau dhau.
Lub hardness ntawm cov khoom zoo heev cuam tshuam nws compression kev ua tau zoo. Nyob rau hauv qhov kev pom zoo ntawm kev ua kom lub cev muaj zog, nws raug nquahu kom ua qhov tseem ceeb rau cov khoom lag luam nrog qis hardness. Dhau li ntawm kev ntxhov siab qis, qis dua hardness gaskets kuj muaj kev sib raug zoo ntawm kev sib raug zoo thiab qis dua interfacial thermal kuj.
4. Matrix
Peb cov khoom siv polymer siv los ua cov matrix rau thermally conductive gaskets yog silicone, polyurethane, thiab acrylic resin.
Silicone thermally conductive gaskets tau txais cov khoom ntawm cov khoom siv silicone thiab yog hom siv ntau tshaj plaws ntawm thermally conductive gasket. Txawm li cas los xij, ib qho teeb meem yog cov roj silicone nag lossis daus, ua rau lawv tsis haum rau qee qhov kev siv (xws li cov khoom siv kho qhov muag thiab hard drives). Qhov txiaj ntsig tseem ceeb ntawm silicone- cov roj hmab tsis pub dawb yog tias tsis muaj cov roj silicone tso tawm, tab sis qhov tsis zoo kuj tseem pom tseeb, suav nrog qhov ntsuas kub tsis zoo me ntsis thiab siab dua hardness.
