常規(guī)材料的導(dǎo)熱系數(shù)

1、常規(guī)材料的導(dǎo)熱系數(shù)導(dǎo)熱系數(shù)是指在穩(wěn)定傳熱條件下， 1m 厚的材料，兩側(cè)表面的溫差為1 度（K,° C） , 在 1 小時(shí)內(nèi)，通過1平方米面積傳遞的熱量，單位為瓦/米度（W/mK,此處的K可用。C代替導(dǎo)熱率 W/（m*K）金剛石1300-2400硅611銀429銅401金317鈹250鋁240氮化鋁200鎢180鋅116鎳91鐵84-90銦82鈀72鉑72銦 90 銀 1067錫66金 80 錫 2057錫 63 鉛 3750.9錫 60 鉛 4049.8錫 50 鉛 5046.7錫 62 鉛 36 銀2 49金 88 鍺 1244錫 40 鉛 6043.6錫 30 鉛 7040.5錫

2、 20 鉛 8037.4錫 10 鉛 9035.8錫 5 鉛 9535.2鉛35AI2O3(96%)35錫銀33錫銻28銻2442 合金15.6銀填充的相變型光盤片3-8氮化硼填充的硅樹脂6銀填充的鑄模1.3-5模壓料0.6-0.7BT 環(huán)氧樹脂0.19FR-40.11空氣0.03導(dǎo)熱系數(shù)與材料的組成結(jié)構(gòu) 、 密度 、 含水率 、 溫度 等因素有關(guān)。非晶體結(jié)構(gòu)、密度較低的材料，導(dǎo)熱系數(shù)較小。材料的含水率、溫度較低時(shí)，導(dǎo)熱系數(shù)較小。通常把導(dǎo)熱系數(shù)較低的材料稱為保溫材料，而把導(dǎo)熱系數(shù)在0.05 瓦 /米度以下的材料稱為高效保溫材料。軟性硅膠導(dǎo)熱絕緣墊是傳熱界面材料中的一種,具有良好的導(dǎo)熱能力和高等

3、級的耐壓,其作用就是填充處理器與散熱器之間大要求,是替代導(dǎo)熱硅脂導(dǎo)熱膏加云母片的二元散熱系統(tǒng)的最佳產(chǎn)品 .? 該產(chǎn)品的導(dǎo)熱系數(shù)是2.45W/mK, 抗電壓擊穿值在4000 伏以上,本身具有一定的柔韌性,很好的貼合功率器件與散熱鋁片或機(jī)器外殼間的, 從而達(dá)到最好的導(dǎo)熱及散熱目的,符合目前電子行業(yè)對導(dǎo)熱材料的要求.? 硅膠導(dǎo)熱絕緣墊的長寬規(guī)格400x200mm, 工藝厚度從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 專門為利用縫隙傳遞熱量的設(shè)計(jì)方案生產(chǎn),能夠填充縫隙完成發(fā)熱部位與散熱部位的熱傳遞同時(shí)還起到減震?

4、絕緣密封等作用,能夠滿足社設(shè)備小型化超薄化的無風(fēng)扇設(shè)計(jì)要求, 是極具工藝性和使用性的新材料.且厚度適用范圍廣 , 特別適用于汽車、顯示器、計(jì)算機(jī)和電源等電子設(shè)備行業(yè).? 阻燃防火性能符合U.L? 安規(guī) 94V-0? 要求,已通過SGS 公司關(guān)于歐盟ROHS 標(biāo)準(zhǔn)檢測環(huán)保認(rèn)證 ?,工作溫度一般在-50 220? 開關(guān)電源絕緣, 耐溫,耐電壓,導(dǎo)熱及防火材料:?1 . 軟性硅膠導(dǎo)熱墊,工藝厚度從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,? 導(dǎo)熱系數(shù)高達(dá)2.45w/mk,? 同時(shí)具有非常好的絕緣性能.?阻燃防

5、火性能符合UL?94V-0? 要求 ,?并符合歐盟SGS 環(huán)保認(rèn)證,工作溫度一般在-50 220 ;因此 ,?是非常好的導(dǎo)熱材料.?特性柔軟,專門為利用間隙傳遞熱量的設(shè)計(jì)方案生產(chǎn),?能夠填充縫隙,?完成發(fā)熱部件與散熱片的熱傳遞,?增加導(dǎo)熱面積,?同時(shí)還起到防震,絕緣,密封等作用;能夠滿足社設(shè)備小型化,超薄化的設(shè)計(jì)要求,?是極具工藝性和使用性的新材料.?且厚度適用范圍廣,特別適用于汽車、顯示器、計(jì)算機(jī)和電源等電子設(shè)備行業(yè).?2 .大功率MOS 管 ,散熱絕緣片一般使用矽膠片,?導(dǎo)熱系數(shù):?0.8-1.2W/M.K,? 成本低 ,?易組裝 ,?對高發(fā)熱量的MOS 管絕緣是沒有問題,?散熱效果很理想

6、.?常用材料導(dǎo)熱系數(shù)- 深圳智通電子有限公司提供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 鋁 ,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 鋅 ,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