常规材料的导热系数Word格式文档下载.docx
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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0.5mm~5mm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
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--智通电子提供
Metal
Material
Conductivity
Density密度
W/m-C
kg/m3
Aluminum,2024,Temper-T3
121
2.80E+03
Aluminum,2024,Temper-T351
143
Aluminum,2024,Temper-T4
Aluminum,5052,Temper-H32
138
2.68E+03
Aluminum,5052,Temper-O
144
2.69E+03
Aluminum,6061,Temper-O
180
2.71E+03
Aluminum,6061,Temper-T4
154
Aluminum铝,6061,Temper-T6
167
Aluminum,7075,Temper-O
130
Aluminum,7075,Temper-T6
Aluminum,A356,Temper-T6
128
2.76E+03
Aluminum,Al-Cu,Duralumin,95%Al-5%Cu
164
2.79E+03
Aluminum,Al-Mg-Si,97%Al-1%Mg-1%Si-1%Mn
177
Aluminum,Al-Si,Alusil,80%Al-20%Si
161
2.63E+03
Aluminum,Al-Si,Silumim,86.5%Al-1%Cu
137
2.66E+03
Aluminum,Pure
220
Beryllium,Pure
175
1.85E+03
Brass,Red,85%Cu-15%Zn
151
8.80E+03
Brass,Yellow,65%Cu-35%Zn
119
Copper,Alloy,11000
388
8.93E+03
Copper,Aluminumbronze,95%Cu-5%Al
83
8.67E+03
Copper,Brass,70%Cu-30%Zn
111
8.52E+03
Copper,Bronze,75%Cu-25%Sn
26
Copper,Constantan,60%Cu-40%Ni
22.7
8.92E+03
Copper,DrawnWire
287
Copper,Germansilver,62%Cu-15%Ni-22%Zn
24.9
8.62E+03
Copper,Pure
386
8.95E+03
Copper,Redbrass,85%Cu-9%Sn-6%Zn
61
8.71E+03
Gold,Pure
318
1.89E+04
Invar,64%Fe-35%Ni
13.8
8.13E+03
Iron,Cast
55
7.92E+03
Iron,Pure
71.8
7.90E+03
Iron,Wrought,0.5%C
59
7.85E+03
Kovar,54%Fe-29%Ni-17%Co
16.3
8.36E+03
Lead,Pure
35
1.14E+04
Magnesium,Mg-Al,Electrolytic,8%Al-2%Zn
66
1.81E+03
Magnesium,Pure
171
1.75E+03
Molybdenum
1.02E+04
Nichrome,80%Ni-20%Cr
12
8.40E+03
Nickel,Ni-Cr,80%Ni-20%Cr
12.6
8.31E+03
Nickel,Ni-Cr,90%Ni-10%Cr
17
Nickel,Pure
99
8.91E+03
Silver,Pure
418
1.05E+04
Solder,Hard,80%Au-20%Sn
57
1.50E+04
Solder,Hard,88%Au-12%Ge
88
Solder,Hard,95%Au-3%Si
94
1.57E+04
Solder,Soft,60%Sn-40%Pb
50
9.29E+03
Solder,Soft,63%Sn-37%Pb
51
9.25E+03
Solder,Soft,92.5%Pb-2.5%Ag-5%In
39
1.20E+04
Solder,Soft,95%Pb-5%Sn
32.3
1.10E+04
Steel,Carbon,0.5%C
54
7.83E+03
Steel,Carbon,1.0%C
43
7.80E+03
Steel,Carbon,1.5%C
36
7.75E+03
Steel,Chrome,Cr0%
73
Steel,Chrome,Cr1%
7.87E+03
Steel,Chrome,Cr20%
22
7.69E+03
Steel,Chrome,Cr5%
40
Steel,Chrome-Nickel,15%Cr-10%Ni
19
Steel,Chrome-Nickel,18%Cr-8%Ni
7.82E+03
Steel,Chrome-Nickel,20%Cr-15%Ni
15.1
Steel,Chrome-Nickel,25%Cr-20%Ni
12.8
Steel,Invar,36%Ni
10.7
8.14E+03
Steel,Nickel,Ni0%
Steel,Nickel,Ni20%
7.93E+03
Steel,Nickel,Ni40%
10
8.17E+03
Steel,Nickel,Ni80%
Steel,SAE1010
Steel,SAE1010,Sheet
63.9
Steel,Stainless,316
16.26
8.03E+03
Steel,Tungsten,W0%
Steel,Tungsten,W1%
7.91E+03
Steel,Tungsten,W10%
48
Steel,Tungsten,W5%
8.07E+03
Tin,Cast,Hammered
62.5
7.35E+03
Tin,Pure
64
7.30E+03
Titanium
15.6
4.51E+03
Tungsten
1.94E+04
Zinc锌,Pure
112.2
7.14E+03
Non-Metal
Density
kg/m3
ABS-Plastic
0.25
1.01E+03
Acetals
0.3
1.42E+03
Acrylic
0.06
1.19E+03
Alkyds
0.85
2.00E+03
Alumina,96%
21
3.80E+03
Alumina,Pure
37
3.90E+03
Asbestos,Asbestos-sheets
0.166
NoData
Asbestos,Cement
2.08
Asbestos,Cement-boards
0.74
Asbestos,Corregated,4plies/in
0.087
Asbestos,Felt,20lam/in
0.078
Asbestos,Felt,40lam/in
0.057
Asbestos,Loosely-packed
0.154
520
Asphalt
0.75
Bakelite
0.19
Balsamwool2.2lb/ft3
0.04
Beryllia,99.5%
197.3
Brick,Buildingbrick
0.69
1.60E+03
Brick,Carborundumbrick
18.5
Brick,Chromebrick
2.32
3.00E+03
Brick,Diatomaceousearth
0.24
Brick,Facebrick
1.32
Brick,Fireclay
1.04
Brick,Magnesite
3.81
Carbon
6.92
Cardboard,Celotex
0.048
Cardboard,Corrugated
0.064
Cement,Mortar
1.16
Cement,Portland
0.29
1.50E+03
Concrete,Cinder
0.76
Concrete,Stone1-2-4mix
1.37
2.10E+03
Cork,Corkboard,10lb/ft3
0.043
160
Cork,Ground
150
Cork,Regranulated
0.045
80
Diamond,Film
700
3.50E+03
Diamond,TypeIIA
Diamond,TypeIIB
1.30E+03
Diatomaceousearth
0.061
320
E-GlassFiber
0.89
2.54E+03
Epoxy,HighFill
2.163
Epoxy,NoFill
0.207
Felt,Hair
0.036
265
Felt,Wool
0.052
330
Fiberinsulatingboard
240
FR4EpoxyGlass,1ozCopper
9.11
FR4EpoxyGlass,2ozCopper
17.71
FR4EpoxyGlass,4ozCopper
35.15
FR4EpoxyGlass,noCopper
0.294
1.90E+03
Glass,Borosilicate
1.09
2.20E+03
Glass,Pyrex
1.02
2.23E+03
Glass,Window
0.78
2.70E+03
Glass,Wool,1.5lb/ft3
0.038
24
Insulex,dry
Kapok
0.035
Kapton
0.156
Magnesia,85%
0.067
270
Mica
0.71
Mylar
Nylon
0.242
1.10E+03
Phenolic,Paperbased
0.277
Phenolic,Plain
0.519
Plaster,Gypsum
0.48
1.44E+03
Plaster,Metallath
0.47
Plaster,Woodlath
0.28
Plexiglass
Polycarbonate
1.20E+03
Polyethylene,Highdensity
0.5
950
Polyethylene,Lowdensity
0.35
920
Polyethylene,Mediumdensity
0.4
930
Polystyrene
0.106
Polyvinylchloride
0.16
Pyrex
1.26
Rockwool,10lb/ft3
Rockwool,Looselypacked
Rubber,Butyl
0.26
Rubber,Hard
Rubber,Silicone
Rubber,Soft
0.14
Sawdust
0.059
S-GlassFiber
0.9
2.49E+03
Silicaaerogel
0.024
140
Silicon,99.9%
2.33E+03
Siliconegrease
0.21
Stone,Granite
2.8
2.64E+03
Stone,Limestone
1.3
2.50E+03
Stone,Marble
2.5
2.60E+03
Stone,Sandstone
1.83
Styrofoam
Teflon
0.22
WoodShavings
Wood,CrossGrain,Balsa,8.8lb/ft3
0.055
Wood,CrossGrain,Cypress
0.097
460
Wood,CrossGrain,Fir
0.11
420
Wood,CrossGrain,Maple
540
Wood,CrossGrain,Oak
Wood,CrossGrain,Whitepine
0.112
430
Wood,CrossGrain,Yellowpine
0.147
640
Aluminum-Oxide,Al2O3,99.5%
32
Aluminum-Oxide,Al2O3,96%
21.5
Aluminum-Oxide,Al2O3,90%
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