Umehluko phakathi kwejeli ye-silica eshisayo kanye namafutha ashisayo

1. Yiziphi izici zejeli ye-silica eshisayo (i-thermal potting glue)?

I-silicone ye-thermal conductive ngokuvamile ibizwa nangokuthi iglue ye-thermal conductive potting noma i-RTV glue ye-thermal conductive.Iwuhlobo oluphansi lwe-viscosity-viscosity-retardant yezingxenye ezimbili zokufakwa kweglue ye-silicone eqhuba ukushisa.Ingelapheka ekamelweni lokushisa noma ukushisa.Uma izinga lokushisa liphakeme, ikhambi lishesha.okukhethekile.Umehluko omkhulu kugrisi ye-silicone eshisayo ukuthi i-silicone eshisayo ingelapheka futhi inezici ezithile zokunamathela.

Ijeli ye-silica esebenza ngokushisayo (iglue ye-thermally conductive potting) iwuhlobo lwerabha ye-silicone, eyingxenye yerabha ewuketshezi ye-vulcanization yengxenye eyodwa yezinga lokushisa.Uma esevezwe emoyeni, ama-silane monomers akuwo ajiya ukuze enze isakhiwo senethiwekhi, uhlelo luxhumeke-cross-link, alukwazi ukuncibilika futhi luncibilike, luyanwebeka, luba yirabha, futhi lunamathele ezintweni ngesikhathi esifanayo.I-thermal conductivity yayo iphakeme kancane kunaleyo yenjoloba evamile, kodwa iphansi kakhulu kunaleyo ye-thermal conductive silicone grease, futhi uma selashiwe, kunzima ukuhlukanisa izinto eziboshiwe.

2. Yiziphi izici zamafutha ashisayo
I-silicone i-thermally conductive grease ivame ukubizwa ngokuthi "i-thermally conductive paste", "i-silicon paste", i-thermal conductive silicone grease iwuhlobo lwe-high conductivity eshisayo evikela impahla ye-silicone, ayelaphi, futhi ingagcina isimo samafutha isikhathi eside. ezingeni lokushisa -50°C-+230°C impahla thermally conductive.Ayigcini nje ngokufaka ugesi omuhle kakhulu, kodwa futhi ine-conductivity enhle kakhulu yokushisa, futhi ngesikhathi esifanayo inokuhlukaniswa kwamafutha aphansi (ivame ukuya ku-zero), ukumelana nokushisa okuphezulu nokuphansi, ukumelana namanzi, ukumelana ne-ozone, kanye nesimo sezulu ukumelana nokuguga.

Ingasetshenziswa kabanzi emikhiqizweni ehlukahlukene ye-elekthronikhi, kanye nendawo yokuxhumana phakathi kwezinto zokufudumeza (amashubhu amandla, izihlungi ezilawulwa yi-silicon, izitaki zokushisa zikagesi, njll.) Indima yokudlulisa ukushisa okuphakathi nobufakazi bomswakama, uthuli-ubufakazi, ukugqwala. , i-shock-proof nezinye izakhiwo.

Ilungele ukumbozwa ngaphezulu noma ukugawulwa kwembiza sekukonke kwemishini ehlukahlukene ye-microwave efana nokuxhumana nge-microwave, okokusebenza kwe-microwave transmission, ukunikezwa kwamandla okukhethekile kwe-microwave, kanye nokuphakelwa kwamandla kagesi azinzile.Lolu hlobo lwezinto ze-silicon luhlinzeka nge-thermal conductivity enhle kakhulu yezingxenye ze-elekthronikhi ezikhiqiza ukushisa.Okufana nalokhu: ama-transistors, ukuhlanganiswa kwe-CPU, ama-thermistors, izinzwa zokushisa, izingxenye ze-elektroniki zezimoto, iziqandisi zemoto, amamojula wamandla, amakhanda ephrinta, njll.

3. Ukufana nomehluko phakathi kwejeli ye-silica eshisayo kanye namafutha ashisayo
Lokho abafana ngakho: bonke bane-thermal conductivity kanye ne-insulation, futhi zonke ziyizinto zokusebenzisana ezishisayo.

umehluko:

I-silicone ye-thermally conductive (ingcina ye-thermally conductive potting glue): iyanamathela (uma ibanjiwe, kunzima ukuyisusa,

Ngakho-ke, isetshenziswa kakhulu ezikhathini lapho kudingeka khona ukubopha kanye kuphela.Iyashintshashintsha, incibilika ekushiseni okuphezulu (i-viscous liquid), iyaqina (ivezwa) ekushiseni okuphansi, ayikwazi ukuncibilika futhi incibilike, futhi iyanwebeka.

Igrisi ye-silicone eguquguqukayo eshisayo (i-thermally conductive paste): I-Adsorptive, enganamatheli, inamathisele i-semi-liquid, engaguquguquki, ayipholisi (ayijiki ngezinga lokushisa eliphansi, futhi ayinciphi uma izinga lokushisa liphezulu).

4. Ububanzi bohlelo lokusebenza

Uma kuqhathaniswa nejeli ye-silica, ukusetshenziswa kwe-silicone grease kubanzi kakhulu.Imikhiqizo eminingi yezimboni neye-elekthronikhi isebenzisa i-thermal conductive silicone grease lapho kudingeka khona ukuchithwa kokushisa.

Ngaphezu kwalokho, kunezinhlobo eziningi zamafutha abicah, futhi abantu bengeza "ukungcola" okuthile kugrisi ehlanzekile ye-silicone conductive ukuze kuthuthukiswe ukuguquguquka kwayo okushisayo.

Lokhu kungcola i-graphite powder, i-aluminium powder, i-copper powder nokunye.

Igrisi ye-silicone emsulwa imhlophe njenge-milky, igrisi ye-silicone exutshwe ne-graphite inombala omnyama, igrisi ye-silicone exutshwe nempushana ye-aluminium impunga futhi iyacwebezela, kanti amafutha e-silicone axutshwe nempushana yethusi athi aphuzi.