真空绝热板(VIP板)是英文Vacuum Insulation Panel的简称,是真空保温材料中的一种,是由填充芯材与真空保护表层复合而成,它有效地避免空气对流引起的热传递,因此导热系数可大幅度降低,小于0.003w/m.k,并且不含有任何ODS材料,具有环保和高效节能的特性,是目前世界上最先进的高效保温材料。VIP主要用于保温绝热,如家用冰箱、游艇冰箱、迷你冰箱、车载冰箱、深冷冰柜、电热水器、自动贩卖机、冷冻箱、冷藏集装箱、建筑墙体保温和LNG储运等。
真空绝热板的导热系数非常关键,通常采用护热平板法测试,美国lasercomp进口仪器,型号:HC-074-200导热系数仪,样品尺寸:宽100-300mm,长100-300mm,厚度1~100mm。测试标准:SRM1450,ASTM-C177,ASTM-C518,ISO-8301,GB/T10294。真空绝热板的导热系数测试如下:
Wednesday, May 25, 2005, Time 13:55
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WinTherm32 Version 2.30.15
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Instrument Program Version 71 | |||||||||
Instrument Serial Number: 669
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Sample Name: vip-1
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Thickness: 12.268mm
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[ hc-074-200,2005-6-7 ] | |||||||||
[ 3#05-06-05 ] | |||||||||
Thickness obtained : from instrument
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TEST RUN
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Calibration used : 1450b | |||||||||
Calibration read from instrument
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Number o | 1 | ||||||||
Number o | 1 | ||||||||
Number of Setpoints: 1 | |||||||||
****OnButtonAbortClick::Stop button pressed ****
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Block Averages for setpoint 1 in SI units
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Tupper | Tlower | Qupper | Qlower | Lambda | |||||
[逤] | [逤] | [uV] | [uV] | [W/mK] | |||||
-ne- | 7.77 | 32.62 | -3427 | 1998 | 0.01653 | ||||
-ne- | 7.51 | 32.52 | -1186 | 440 | 0.004955 | ||||
-te- | 7.51 | 32.51 | -953 | 460 | 0.004292 | ||||
-te- | 7.51 | 32.51 | -854 | 531 | 0.004192 | ||||
-te- | 7.51 | 32.52 | -799 | 577 | 0.004159 | ||||
-te- | 7.51 | 32.52 | -766 | 612 | 0.004157 | ||||
Mean Temp | Average Cond | ||||||||
20.01 | 0.004157 |
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