常规材料的导热系数

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铂铟 90银107267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 249金88锗1244锡40铅6043.6锡30铅7040.5锡20铅8037.4锡10铅9035.8锡 5 铅 95铅3535.2ai2o3 (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-可编辑修改 -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.常用材料导热系数-深圳智通电子有限公司提供metalmaterialconductivitydensity 密度w/m-ckg/m 3aluminum, 2024, temper-t31212.80e+03aluminum, 2024, temper-t3511432.80e+03aluminum, 2024, temper-t41212.80e+03aluminum, 5052, temper-h321382.68e+03aluminum, 5052, temper-o1442.69e+03aluminum, 6061, temper-o1802.71e+03aluminum, 6061, temper-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,1642.79e+0395%al-5%cualuminum, al-mg-si,1772.71e+0397%al-1%mg-1%si-1%mnaluminum, al-si, alusil,1612.63e+0380%al-20%sialuminum, 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, aluminum bronze, 95%cu-5%al838.67e+03copper, brass, 70%cu-30%zn1118.52e+03copper, bronze, 75%cu-25%sn268.67e+03copper, constantan, 60%cu-40%ni22.78.92e+03copper, drawn wire2878.80e+03copper, german silver, 62%cu-15%ni-22%zn24.98.62e+03copper, pure3868.95e+03copper, red brass, 85%cu-9%sn-6%zn618.71e+03gold, pure3181.89e+04invar, 64%fe-35%ni13.88.13e+03iron, cast557.92e+03iron, pure71.87.90e+03iron, wrought, 0.5%c597.85e+03kovar, 54%fe-29%ni-17%co16.38.36e+03lead, pure351.14e+04magnesium, mg-al, electrolytic,661.81e+038%al-2%znmagnesium, pure1711.75e+03molybdenum1301.02e+04nichrome, 80%ni-20%cr128.40e+03nickel, ni-cr, 80%ni-20%cr12.68.31e+03nickel, ni-cr, 90%ni-10%cr178.67e+03nickel, pure998.91e+03silver, pure4181.05e+04solder, hard, 80%au-20%sn571.50e+04solder, hard, 88%au-12%ge881.50e+04solder, hard, 95%au-3%si941.57e+04solder, soft, 60%sn-40%pb509.29e+03solder, soft, 63%sn-37%pb519.25e+03solder, soft,391.20e+0492.5%pb-2.5%ag-5%insolder, soft, 95%pb-5%sn32.31.10e+04steel, carbon, 0.5%c547.83e+03steel, carbon, 1.0%c437.80e+03steel, carbon, 1.5%c367.75e+03steel, chrome, cr0%737.90e+03steel, chrome, cr1%617.87e+03steel, chrome, cr20%227.69e+03steel, chrome, cr5%407.83e+03steel, chrome-nickel,197.87e+0315%cr-10%nisteel, chrome-nickel,16.37.82e+0318%cr-8%nisteel, chrome-nickel,15.17.83e+0320%cr-15%nisteel, chrome-nickel,25%cr-20%ni12.87.87e+03steel, invar, 36%ni10.78.14e+03steel, nickel, ni0%737.90e+03steel, nickel, ni20%197.93e+03steel, nickel, ni40%108.17e+03steel, nickel, ni80%358.62e+03steel, sae 1010597.83e+03steel, sae 1010, sheet63.97.83e+03steel, 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+03tungsten1801.94e+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 dataasbestos, corregated, 4plies/in0.087no dataasbestos, 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 brick18.5no 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+03concrete, 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 dataepoxy, 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, pyrex1.022.23e+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 lath0.47no 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 30.04160rock wool, loosely packed0.06764rubber, butyl0.26no datarubber, hard0.19no datarubber, silicone0.19no datarubber, soft0.14no datasawdus