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/m?K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 20 铅 8037.

2、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 模压料BT 环氧树脂FR-4 空气1.3 - 5 0.6 - 0.7 0.190.110.03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

3、热能力和高等级的耐压 , 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0.5mm5mn不等,每0.5mm 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

4、减震绝缘密封等作用 , 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 C 220C开关电源绝缘 ， 耐溫 ， 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.阻燃防火性能

5、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 C 220C ;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MOSW绝缘是没有问题，

6、散热效果很理想.常用材料导热系数 - 深圳智通电子有限公司提供 MetalMaterialConductivityW/m-CAluminum, 2024, Temper-T3 121Aluminum, 2024, Temper-T351 143Aluminum, 2024, Temper-T4 121Aluminum, 5052, Temper-H32 138Aluminum, 5052, Temper-O 144Aluminum, 6061, Temper-O 180Aluminum, 6061, Temper-T4 154Aluminum 铝, 6061, Temper-T6167Alum

7、inum, 7075, Temper-O130Aluminum, 7075, Temper-T6 130Aluminum, A356, Temper-T6 128Aluminum, Al-Cu, Duralumin,16495%Al-5%CuAluminum, Al-Mg-Si, 97%Al-1%Mg-1%Si-1%Mn Aluminum, Al-Si, Alusil, 80%Al-20%Si177161Aluminum, Al-Si, Silumim,86.5%Al-1%CuAluminum, Pure220Beryllium, Pure175Brass, Red, 85%Cu-15%Zn

8、151 Brass, Yellow, 65%Cu-35%Zn 119 Copper, Alloy, 11000388Copper, Aluminum bronze,8395%Cu-5%AlCopper, Brass, 70%Cu-30%Zn 111Copper, Bronze, 75%Cu-25%Sn26Copper, Constantan,60%Cu-40%NiCopper, Drawn Wire Copper, German silver, 62%Cu-15%Ni-22%Zn Copper, PureCopper, Red brass, 85%Cu-9%Sn-6%Zn Gold, Pure

9、Invar, 64%Fe-35%Ni28724.93866131813.8Density 密度 kg/m 3 2.80E+03 2.80E+03 2.80E+03 2.68E+03 2.69E+03 2.71E+03 2.71E+03 2.71E+03 2.80E+03 2.80E+03 2.76E+03 2.79E+032.71E+032.63E+032.66E+032.71E+031.85E+03 8.80E+03 8.80E+03 8.93E+038.67E+038.52E+03 8.67E+038.92E+038.80E+038.62E+038.95E+038.71E+031.89E+

10、04 8.13E+03557.92E+0371.87.90E+03597.85E+0316.38.36E+03351.14E+04661.81E+031711.75E+031301.02E+04128.40E+0312.68.31E+03178.67E+03998.91E+034181.05E+04571.50E+04881.50E+04941.57E+04509.29E+03519.25E+03391.20E+0432.31.10E+04547.83E+03437.80E+03367.75E+03737.90E+03617.87E+03227.69E+03407.83E+03197.87E+

11、0316.37.82E+0315.17.83E+0312.87.87E+0310.78.14E+03737.90E+03197.93E+03108.17E+03358.62E+03597.83E+0363.97.83E+03Iron, Cast Iron, Pure Iron, Wrought, 0.5%C Kovar, 54%Fe-29%Ni-17%Co Lead, PureMagnesium, Mg-Al, Electrolytic, 8%Al-2%Zn Magnesium, Pure MolybdenumNichrome, 80%Ni-20%Cr Nickel, Ni-Cr, 80%Ni

12、-20%Cr Nickel, Ni-Cr, 90%Ni-10%Cr Nickel, PureSilver, PureSolder, Hard, 80%Au-20%Sn Solder, Hard, 88%Au-12%Ge Solder, Hard, 95%Au-3%Si Solder, Soft, 60%Sn-40%Pb Solder, Soft, 63%Sn-37%Pb Solder, Soft, 92.5%Pb-2.5%Ag-5%In Solder, Soft, 95%Pb-5%Sn Steel, Carbon, 0.5%C Steel, Carbon, 1.0%C Steel, Carbo

13、n, 1.5%C Steel, Chrome, Cr0% Steel, Chrome, Cr1% Steel, Chrome, Cr20% Steel, Chrome, Cr5% Steel, Chrome-Nickel, 15%Cr-10%Ni Steel, Chrome-Nickel, 18%Cr-8%Ni Steel, Chrome-Nickel, 20%Cr-15%Ni Steel, Chrome-Nickel, 25%Cr-20%NiSteel, Invar, 36%Ni Steel, Nickel, Ni0% Steel, Nickel, Ni20% Steel, Nickel,

14、Ni40% Steel, Nickel, Ni80% Steel, SAE 1010 Steel, SAE 1010, SheetSteel, Stainless, 31616.268.03E+03Steel, Tungsten, W0%737.90E+03Steel, Tungsten, W1%667.91E+03Steel, Tungsten, W10%488.31E+03Steel, Tungsten, W5%548.07E+03Tin, Cast, Hammered62.57.35E+03Tin, Pure647.30E+03Titanium15.64.51E+03Tungsten18

15、01.94E+04Zinc 锌 , Pure112.27.14E+03Non-MetalMaterialConductivityDensityW/m-Ckg/m3ABS-Plastic0.251.01E+03Acetals0.31.42E+03Acrylic0.061.19E+03Alkyds0.852.00E+03Alumina, 96%213.80E+03Alumina, Pure373.90E+03Asbestos, Asbestos-sheets0.166No DataAsbestos, Cement2.08No DataAsbestos, Cement-boards0.74No Da

16、taAsbestos, Corregated,0.087No Data4plies/inAsbestos, Felt, 20 lam/in0.078No DataAsbestos, Felt, 40 lam/in0.057No DataAsbestos, Loosely-packed0.154520Asphalt0.75No DataBakelite0.19No DataBalsam wool 2.2lb/ft 30.0435Beryllia, 99.5%197.3No DataBrick, Building brick0.691.60E+03Brick, Carborundum brick1

17、8.5No DataBrick, Chrome brick2.323.00E+03Brick, Diatomaceous earth0.24No DataBrick, Face brick1.322.00E+03Brick, Fireclay1.042.00E+03Brick, Magnesite3.81No DataCarbon6.92No DataCardboard, Celotex0.048No DataCardboard, Corrugated0.064No DataCement, Mortar1.16No DataCement, Portland0.291.50E+03Concret

18、e, Cinder0.76No DataConcrete, Stone 1-2-4 mix1.372.10E+03Cork, Corkboard,10lb/ft 30.043160Cork, Ground0.043150Cork, Regranulated0.04580Diamond, Film7003.50E+03Diamond, Type IIA2.00E+03No DataDiamond, Type IIB1.30E+03No DataDiatomaceous earth0.061320E-Glass Fiber0.892.54E+03Epoxy, High Fill2.163No Da

19、taEpoxy, No Fill0.207No DataFelt, Hair0.036265Felt, Wool0.052330Fiber insulating board0.048240FR4 Epoxy Glass, 1oz Copper9.11No DataFR4 Epoxy Glass, 2 oz Copper17.71No DataFR4 Epoxy Glass, 4oz Copper35.15No DataFR4 Epoxy Glass, no Copper0.2941.90E+03Glass, Borosilicate1.092.20E+03Glass, Pyrex1.022.2

20、3E+03Glass, Window0.782.70E+03Glass, Wool, 1.5lb/ft 30.03824Insulex, dry0.064No DataKapok0.035No DataKapton0.156No DataMagnesia, 85%0.067270Mica0.71No DataMylar0.19No DataNylon0.2421.10E+03Phenolic, Paper based0.277No DataPhenolic, Plain0.519No DataPlaster, Gypsum0.481.44E+03Plaster, Metal lath0.47N

21、o DataPlaster, Wood lath0.28No DataPlexiglass0.19No DataPolycarbonate0.191.20E+03Polyethylene, High density0.5950Polyethylene, Low density0.35920Polyethylene, Medium density0.4930Polystyrene0.106No DataPolyvinyl chloride0.16No DataPyrex1.26No DataRock wool, 10lb/ft 30.041600.067640.26No Data0.19No Data0.19No Data0.14No Data0.059No Data0.92.49E+030.0