Rau ntau hom kev siv thermal conductive nanomaterials

1. Nano diomand

Pob zeb diamond yog cov khoom siv thermal conductivity siab tshaj plaws nyob rau hauv qhov xwm txheej, nrog thermal conductivity txog li 2000 W / (mK) ntawm chav tsev kub, thermal expansion coefficient txog (0.86 ± 0.1) * 10-5 / K, thiab rwb thaiv tsev ntawm chav. Tsis tas li ntawd, pob zeb diamond tseem muaj cov khoom siv zoo heev, acoustic, kho qhov muag, hluav taws xob thiab tshuaj lom neeg, uas ua rau nws muaj qhov zoo ntawm cov cua sov dissipation ntawm high-power photoelectric li, uas kuj qhia tau hais tias pob zeb diamond muaj peev xwm siv tau zoo hauv tshav kub dissipation.
2. BN

Cov qauv siv lead ua ntawm hexahedral boron nitride zoo ib yam li cov txheej txheem graphite.Nws yog cov hmoov dawb uas ua los ntawm xoob, lubricating, yooj yim nqus thiab lub teeb yuag.Theoretical ntom yog 2.29g / cm3, mohs hardness yog 2, thiab cov khoom siv tshuaj muaj zog heev.Cov khoom muaj cov dej noo tsis kam thiab tuaj yeem siv rau hauv nitrogen lossis argon ntawm qhov kub txog li 2800 ℃ .Nws tsis tsuas yog muaj thermal expansion coefficient, tab sis kuj muaj thermal conductivity, tsis yog tsuas yog ib tug zoo conductor ntawm tshav kub, tab sis ib tug raug hluav taws xob insulator.The thermal conductivity ntawm BN yog 730w / mk. ua 300k.

3. SIC

Cov khoom siv tshuaj lom neeg ntawm silicon carbide yog qhov ruaj khov, thiab nws cov thermal conductivity zoo dua li lwm cov khoom siv semiconductor, thiab nws cov thermal conductivity tseem ntau dua hlau ntawm chav tsev kub. Cov kws tshawb fawb los ntawm Beijing University of Chemical Technology tau kawm txog thermal conductivity ntawm alumina thiab silicon carbide. Cov txiaj ntsig tau qhia tias cov thermal conductivity ntawm silicone roj hmab nce nrog qhov nce ntawm cov nyiaj ntawm silicon carbide.Nrog rau tib tus nqi ntawm silicon carbide, thermal conductivity ntawm silicon roj hmab reinforced nrog me me particle loj yog ntau dua qhov loj me me. .

4. ALN

Aluminium nitride yog atomic siv lead ua thiab tuaj yeem nyob ruaj khov ntawm qhov kub ntawm 2200 ℃.Nrog zoo thermal conductivity thiab me me coefficient ntawm thermal expansion, nws yog ib tug zoo tshav kub-resistant tej yam khoom.The thermal conductivity ntawm txhuas nitride yog 320 W· (m·K) -1, uas yog ze rau lub thermal conductivity ntawm boron oxide thiab silicon carbide thiab ntau tshaj 5 npaug ntawm alumina.
Daim ntawv thov kev taw qhia: thermal silica gel system, thermal yas system, thermal epoxy resin system, thermal ceramic khoom.

5. AL2O3

Alumina yog ib hom kev ua haujlwm ntau yam inorganic muab tub lim, nrog cov thermal conductivity loj, dielectric tas li thiab zoo dua hnav tsis kam, dav siv hauv cov khoom siv roj hmab, xws li silica gel, potting sealant, epoxy resin, yas, roj hmab thermal conductivity, thermal conductivity yas. , silicone roj, kub dissipation ceramics thiab lwm yam ntaub ntawv.Hauv daim ntawv thov, Al2O3 muab tub lim tuaj yeem siv ib leeg lossis sib xyaw nrog lwm cov muab tub lim xws li AIN, BN, thiab lwm yam.

6.Cov pa roj carbon Nanotubes

Cov thermal conductivity ntawm carbon nanotubes yog 3000 W· (m·K) -1, 5 npaug ntawm tooj liab.Carbon nanotubes tuaj yeem txhim kho cov thermal conductivity, conductivity thiab lub cev ntawm cov roj hmab, thiab nws cov kev txhawb zog thiab thermal conductivity zoo dua li cov tsoos. fillers xws li carbon dub, carbon fiber thiab iav fiber.