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热流法热阻测试、导热系数测试 - 国内唯一进口仪器测试热阻服务

更新时间:2016/10/30 18:07:11 点击: 来源:www.daoreceshi.com
  • 产品品牌德国耐驰HFM436
  • 产品型号德国耐驰HFM436
  • 产品描述

    TheHFM436adevicespecificallydevelopedformeasuringinterfacethermalresistance.Heattransportacrossgapsismostfrequentlyimprovedbytheadditionofalayerofc...

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The HFM436 a device

specifically developed for measuring interface thermal resistance.

 

Heat transport across gaps is most frequently improved

by the addition of a layer of conductive material that fills the crevices in between,
and with that thermally bridges the gap. Heat transfer is then governed by the thermal

conductivity of the material, the thickness of the
layer, and the two interfaces at the boundaries of the layer. For most engineering

applications it is extremely difficult to model this combination
from its components, as exact figures for the boundary resistances are usually not known.

Further aggravating this is the effect varying
surface conditions can bring to the interface. For this reason it is becoming general

practice to measure the combination that closely replicates
actual use, and determine experimentally the interface impedance of the filler and the

two interfaces combined.

 

• Thermal Interface Materials
• Fast Test Times
• RT to 150°C
• Variable (controlled) Loading
• Easy to use

 

Thermal Resistance Range:
5 x 10-6 to 1 x 10-4 m2K/W
Temperature Range: [A] Ambient only
                             [B] Ambient to 150°C
Load Range: [1] 5 psi (35 Kpa), not variable
[2] 5 to 100 psi (35 to 690 Kpa), variable

 

 

Utilities Required:
Power: 120 or 208-230 VAC 50/60 Hz single phase, 600W
Compressed air: 90-100 psi (620 - 690 Kpa), clean and dry

 

Specimen: The specimen test assembly is constructed by placing a layer of the

material to be tested between two 25.4mm diameter metal disks. These consumable

disks (P/N: QL50-X102) are made of an alloy steel, but optionally copper (P/N: QL50-X103) or aluminum (P/N: QL50-X104) alloy are also available. The disks are low cost and

considered disposable, however, they may be reusable when the specimen does not

adhere to them. Interface surfaces can be ordered rough(-R), medium (-M), or

smooth (-F) to suit each application.

 

 

 

 

热流计法导热系数仪:

样品尺寸最小尺寸:100mm*100mm*1mm,最大尺寸:300mm*300mm*100mm

测试项目:热阻、导热系数

测试标准:ASTM E1530,ASTM C 518, ASTM C 177, GB/T10295,GB/T10801,GB/T17794,GB/T3399,GB/T3139,ISO 8301, JIS A 1412, DIN EN 12939, DIN EN 13163 与 DIN EN 12667

测试温度:-20°C to 80°C

测试类别:绝热材料、保温材料等低导热材料,可以为液体或粉末。

 

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热流法热阻测试、导热系数测试 - 国内唯一进口仪器测试热阻服务