常规材料的导热系数

1、常规材料的导热系数导热系数是指在稳定传热条件下， 1m 厚的材料，两侧表面的温差为1 度（K,° C） , 在 1 小时内，通过1平方米面积传递的热量，单位为瓦/米度（W/mK,此处的K可用。C代替导热率 W/（m*K）金刚石1300-2400硅611银429铜401金317铍250铝240氮化铝200钨180锌116镍91铁84-90铟82钯72铂72铟 90 银 1067锡66金 80 锡 2057锡 63 铅 3750.9锡 60 铅 4049.8锡 50 铅 5046.7锡 62 铅 36 银2 49金 88 锗 1244锡 40 铅 6043.6锡 30 铅 7040.5锡

2、 20 铅 8037.4锡 10 铅 9035.8锡 5 铅 9535.2铅35AI2O3(96%)35锡银33锡锑28锑2442 合金15.6银填充的相变型光盘片3-8氮化硼填充的硅树脂6银填充的铸模1.3-5模压料0.6-0.7BT 环氧树脂0.19FR-40.11空气0.03导热系数与材料的组成结构 、 密度 、 含水率 、 温度 等因素有关。非晶体结构、密度较低的材料，导热系数较小。材料的含水率、温度较低时，导热系数较小。通常把导热系数较低的材料称为保温材料，而把导热系数在0.05 瓦 /米度以下的材料称为高效保温材料。软性硅胶导热绝缘垫是传热界面材料中的一种,具有良好的导热能力和高等

3、级的耐压,其作用就是填充处理器与散热器之间大要求,是替代导热硅脂导热膏加云母片的二元散热系统的最佳产品 .? 该产品的导热系数是2.45W/mK, 抗电压击穿值在4000 伏以上,本身具有一定的柔韧性,很好的贴合功率器件与散热铝片或机器外壳间的, 从而达到最好的导热及散热目的,符合目前电子行业对导热材料的要求.? 硅胶导热绝缘垫的长宽规格400x200mm, 工艺厚度从0.5mm5mm 不等,每 0.5mm 一加 ,即0.5mm?1mm?1.5mm?2mm 一直到 ?5mm 特殊要求可增至10mm 专门为利用缝隙传递热量的设计方案生产,能够填充缝隙完成发热部位与散热部位的热传递同时还起到减震?

4、绝缘密封等作用,能够满足社设备小型化超薄化的无风扇设计要求, 是极具工艺性和使用性的新材料.且厚度适用范围广 , 特别适用于汽车、显示器、计算机和电源等电子设备行业.? 阻燃防火性能符合U.L? 安规 94V-0? 要求,已通过SGS 公司关于欧盟ROHS 标准检测环保认证 ?,工作温度一般在-50 220? 开关电源绝缘, 耐温,耐电压,导热及防火材料:?1 . 软性硅胶导热垫,工艺厚度从0.5mm-5mm, 每 0.5mm 一加 ,?即 0.5mm?1mm?1.5mm?2mm 一直到 5mm; 特殊要求可增至10mm,? 导热系数高达2.45w/mk,? 同时具有非常好的绝缘性能.?阻燃防

5、火性能符合UL?94V-0? 要求 ,?并符合欧盟SGS 环保认证,工作温度一般在-50 220 ;因此 ,?是非常好的导热材料.?特性柔软,专门为利用间隙传递热量的设计方案生产,?能够填充缝隙,?完成发热部件与散热片的热传递,?增加导热面积,?同时还起到防震,绝缘,密封等作用;能够满足社设备小型化,超薄化的设计要求,?是极具工艺性和使用性的新材料.?且厚度适用范围广,特别适用于汽车、显示器、计算机和电源等电子设备行业.?2 .大功率MOS 管 ,散热绝缘片一般使用矽胶片,?导热系数:?0.8-1.2W/M.K,? 成本低 ,?易组装 ,?对高发热量的MOS 管绝缘是没有问题,?散热效果很理想

6、.?常用材料导热系数- 深圳智通电子有限公司提供Density 密度 kg/m3 2.80E+0 3 2.80E+0 3 2.80E+0ConductivityMetalW/m-CMaterial121Aluminum,2024,Temper-T3143Aluminum,2024,Temper-T351121Aluminum,2024,Temper-T432.68E+0Aluminum,5052,Temper-H321383Aluminum,5052,Temper-O1442.69E+03Aluminum,6061,Temper-O1802.71E+03Aluminum,6061,Temper

7、-T41542.71E+03Aluminum 铝 ,6061,Temper-T61672.71E+03Aluminum,7075,Temper-O1302.80E+03Aluminum,7075,Temper-T61302.80E+03Aluminum,A356,Temper-T61282.76E+03Aluminum,Al-Cu,Duralumin,95%Al-5%Cu1642.79E+03Aluminum,Al-Mg-Si,97%Al-1%Mg-1%Si-1% Mn1772.71E+03Aluminum,Al-Si,Alusil,80%Al-20%Si1612.63E+03Aluminum

8、,Al-Si,Silumim,86.5%Al-1%Cu1372.66E+03Aluminum,Pure2202.71E+03Beryllium,Pure1751.85E+03Brass,Red,85%Cu-15%Zn1518.80E+03Brass,Yellow,65%Cu-35%Zn1198.80E+03Copper,Alloy,110003888.93E+03Copper,Aluminumbronze,95%Cu-5%Al838.67E+03Copper,Brass,70%Cu-30%Zn1118.52E+03Copper,Bronze,75%Cu-25%Sn268.67E+03Coppe

9、r,Constantan,60%Cu-40%Ni22.78.92E+03Copper,DrawnWire2878.80E+0Copper,Germansilver,62%Cu-15%Ni-22%Z nCopper,PureCopper,Redbrass,85%Cu-9%Sn-6%ZnGold,PureInvar,64%Fe-35%NiIron,CastIron,PureIron,Wrought,0.5%CKovar,54%Fe-29%Ni-17%CoLead,PureMagnesium,Mg-Al,Electrolytic,8%Al-2%ZnMagnesium,PureMolybdenumNi

10、chrome,80%Ni-20%CrNickel,Ni-Cr,80%Ni-20%CrNickel,Ni-Cr,90%Ni-10%CrNickel,PureSilver,PureSolder,Hard,80%Au-20%SnSolder,Hard,88%Au-12%GeSolder,Hard,95%Au-3%Si24.938.62E+033868.95E+03613188.71E+031.89E+0413.88.13E+035571.87.92E+037.90E+035916.37.85E+038.36E+03351.14E+041.81E+031.75E+0366171130121.02E+0

11、48.40E+038.31E+0312.617994188.67E+038.91E+031.05E+0457881.50E+041.50E+041.57E+049.29E+09450Solder,Soft,60%Sn-40%Pb3Solder,Soft,63%Sn-37%Pb519.25E+03Solder,Soft,92.5%Pb-2.5%Ag-5%In391.20E+04Solder,Soft,95%Pb-5%Sn32.31.10E+04Steel,Carbon,0.5%C547.83E+03Steel,Carbon,1.0%C437.80E+03Steel,Carbon,1.5%C367

12、.75E+03Steel,Chrome,Cr0%737.90E+03Steel,Chrome,Cr1%617.87E+03Steel,Chrome,Cr20%227.69E+03Steel,Chrome,Cr5%407.83E+03Steel,Chrome-Nickel,15%Cr-10%Ni197.87E+03Steel,Chrome-Nickel,18%Cr-8%Ni16.37.82E+03Steel,Chrome-Nickel,20%Cr-15%Ni15.17.83E+03Steel,Chrome-Nickel,25%Cr-20%Ni12.87.87E+03Steel,Invar,36%

13、Ni10.78.14E+03Steel,Nickel,Ni0%737.90E+03Steel,Nickel,Ni20%197.93E+03Steel,Nickel,Ni40%108.17E+03Steel,Nickel,Ni80%358.62E+03Steel,SAE1010597.83E+03Steel,SAE1010,Sheet63.97.83E+03Steel,Stainless,31616.268.03E+03Steel,Tungsten,W0%737.90E+03Steel,Tungsten,W1%667.91E+03Steel,Tungsten,W10%488.31E+03Stee

14、l,Tungsten,W5%548.07E+03Tin,Cast,Hammered62.57.35E+03Tin,Pure647.30E+03Titanium15.64.51E+03Tungsten1801.94E+04Zinc 锌 ,Pure112.27.14E+03Non-MetalConductivitMaterialyDensityW/m-Ckg/m3ABS-Plastic0.251.01E+03Acetals0.31.42E+03Acrylic0.061.19E+03Alkyds0.852.00E+03Alumina,96%213.80E+03Alumina,Pure373.90E+

15、03Asbestos,Asbestos-sheets0.166NoDataAsbestos,Cement2.08NoDataAsbestos,Cement-boards0.74NoDataAsbestos,Corregated,4plies/in0.087NoDataAsbestos,Felt,20lam/in0.078NoDataAsbestos,Felt,40lam/in0.057NoDataAsbestos,Loosely-packed0.154520Asphalt0.75NoDataBakelite0.19NoDataBalsamwool2.2lb/ft30.0435Beryllia,

16、99.5%197.3NoDataBrick,Buildingbrick0.691.60E+03Brick,Carborundumbrick18.5NoDataBrick,Chromebrick2.323.00E+03Brick,Diatomaceousearth0.24NoDataBrick,Facebrick1.322.00E+03Brick,Fireclay1.042.00E+03Brick,Magnesite3.81NoDataCarbon6.92NoDataCardboard,Celotex0.048NoDataCardboard,Corrugated0.064NoDataCement

17、,Mortar1.16NoDataCement,Portland0.291.50E+03Concrete,Cinder0.76NoDataConcrete,Stone1-2-4mix1.372.10E+03Cork,Corkboard,10lb/ft30.043160Cork,Ground0.043150Cork,Regranulated0.04580Diamond,Film7003.50E+03Diamond,TypeIIA2.00E+03NoDataDiamond,TypeIIB1.30E+03NoDataDiatomaceousearth0.061320E-GlassFiber0.892

18、.54E+03Epoxy,HighFill2.163NoDataEpoxy,NoFill0.207NoDataFelt,Hair0.036265Felt,Wool0.052330Fiberinsulatingboard0.048240FR4EpoxyGlass,1ozCopper9.11NoDataFR4EpoxyGlass,2ozCopper17.71NoDataFR4EpoxyGlass,4ozCopper35.15NoDataFR4EpoxyGlass,noCopper0.2941.90E+0Glass,Borosilicate32.20E+01.093Glass,Pyrex1.022.

19、23E+03Glass,Window0.782.70E+03Glass,Wool,1.5lb/ft30.03824Insulex,dry0.064NoDataKapok0.035NoDataKapton0.156NoDataMagnesia,85%0.067270Mica0.71NoDataMylar0.19NoDataNylon0.2421.10E+03Phenolic,Paperbased0.277NoDataPhenolic,Plain0.519NoDataPlaster,Gypsum0.481.44E+03Plaster,Metallath0.47NoDataPlaster,Woodlath0.28NoDataPlexiglass0.19NoDataPolycarbonate0.191.20E+03Polyethylene,Highdensity0.5950Polyethylene,Lowdensity0.35920Polyethylene,Mediumdensity0.4930Polystyrene0.106NoDataPolyvinylchloride0.16NoDataPyrex1.26NoDataRockwool,10lb/ft30.04160Rockwool,Looselypacked0.06764Rubber,Butyl0