CIESC Journal ›› 2019, Vol. 70 ›› Issue (S2): 76-84.DOI: 10.11949/0438-1157.20190493
• Thermodynamics • Previous Articles Next Articles
Dexin HOU(),Yue CHEN,Shuliang YE()
Received:
2019-05-09
Revised:
2019-07-11
Online:
2019-09-06
Published:
2019-09-06
Contact:
Shuliang YE
通讯作者:
叶树亮
作者简介:
侯德鑫(1983—),男,硕士,实验师,基金资助:
CLC Number:
Dexin HOU,Yue CHEN,Shuliang YE. Measurement of in-plane thermal conductivity of glued graphite film based on thermal imaging[J]. CIESC Journal, 2019, 70(S2): 76-84.
侯德鑫,陈玥,叶树亮. 基于热成像的背胶石墨膜面向热导率测试方法[J]. 化工学报, 2019, 70(S2): 76-84.
薄层材料 | 密度/ (kg·m-3) | 比热容/ (J·kg-1·K-1) | 面向热导率/ (W·m-1·K-1) | 纵向热导率/ (W·m-1·K-1) | 厚度/μm |
---|---|---|---|---|---|
绝缘层 | 1200 | 2000 | 0.25 | 0.25 | 15 |
石墨层 | 1900 | 850 | 1500 | 10 | 25 |
胶层 | 800 | 2000 | 1 | 1 | 20 |
Table 1 Structure and material parameters of glued graphite film
薄层材料 | 密度/ (kg·m-3) | 比热容/ (J·kg-1·K-1) | 面向热导率/ (W·m-1·K-1) | 纵向热导率/ (W·m-1·K-1) | 厚度/μm |
---|---|---|---|---|---|
绝缘层 | 1200 | 2000 | 0.25 | 0.25 | 15 |
石墨层 | 1900 | 850 | 1500 | 10 | 25 |
胶层 | 800 | 2000 | 1 | 1 | 20 |
模型 | 密度/(kg·m-3) | 比热容/(J·kg-1·K-1) | 面向热导率/(W·m-1·K-1) | 纵向热导率/(W·m-1·K-1) | 厚度/μm |
---|---|---|---|---|---|
稳态等效 | 1358 | 1330 | 625 | 0.73 | 60 |
Table 2 Equivalent single homogeneous material parameters
模型 | 密度/(kg·m-3) | 比热容/(J·kg-1·K-1) | 面向热导率/(W·m-1·K-1) | 纵向热导率/(W·m-1·K-1) | 厚度/μm |
---|---|---|---|---|---|
稳态等效 | 1358 | 1330 | 625 | 0.73 | 60 |
编号 | 材料 | 厚度/mm | 面向热导率参考值/( W·m-1·K-1) | 面向热导率测试值/(W·m-1·K-1) | 相对偏差/% |
---|---|---|---|---|---|
1 | 1060 | 0.17 | 234 | 255 | 9.0 |
2 | 304 | 0.34 | 16 | 17.1 | 6.7 |
3 | 304 | 0.44 | 16 | 16.1 | 0.7 |
4 | 304 | 0.44 | 16 | 16.5 | 2.9 |
5 | 5020 | 0.46 | 138 | 132 | -4.0 |
6 | T2 | 0.58 | 407 | 394 | -3.1 |
7 | 1060 | 0.46 | 234 | 225 | -3.8 |
8 | A3 | 0.49 | 80 | 71.8 | -10.2 |
9 | H62 | 0.39 | 108.9 | 115 | 5.7 |
10 | H62 | 0.48 | 108.9 | 108 | -0.5 |
11 | T2 | 0.39 | 407 | 386 | -5.1 |
12 | T2 | 0.39 | 407 | 400 | -1.8 |
13 | 1060 | 0.17 | 234 | 255 | 9.0 |
14 | A3 | 0.30 | 80 | 83.3 | 4.2 |
Table 3 In-plane thermal conductivity test results of metal sheets
编号 | 材料 | 厚度/mm | 面向热导率参考值/( W·m-1·K-1) | 面向热导率测试值/(W·m-1·K-1) | 相对偏差/% |
---|---|---|---|---|---|
1 | 1060 | 0.17 | 234 | 255 | 9.0 |
2 | 304 | 0.34 | 16 | 17.1 | 6.7 |
3 | 304 | 0.44 | 16 | 16.1 | 0.7 |
4 | 304 | 0.44 | 16 | 16.5 | 2.9 |
5 | 5020 | 0.46 | 138 | 132 | -4.0 |
6 | T2 | 0.58 | 407 | 394 | -3.1 |
7 | 1060 | 0.46 | 234 | 225 | -3.8 |
8 | A3 | 0.49 | 80 | 71.8 | -10.2 |
9 | H62 | 0.39 | 108.9 | 115 | 5.7 |
10 | H62 | 0.48 | 108.9 | 108 | -0.5 |
11 | T2 | 0.39 | 407 | 386 | -5.1 |
12 | T2 | 0.39 | 407 | 400 | -1.8 |
13 | 1060 | 0.17 | 234 | 255 | 9.0 |
14 | A3 | 0.30 | 80 | 83.3 | 4.2 |
石墨膜规格 | 面向热导率/( W·m-1·K-1) | |||||
---|---|---|---|---|---|---|
测试1 | 测试2 | 测试3 | 均值 | 标准差 | 相对标准差/% | |
17 μm单层背胶 | 945 | 977 | 984 | 969 | 20.8 | 2.1 |
17 μm双层背胶 | 529 | 524 | 539 | 531 | 7.6 | 1.4 |
25 μm单层背胶 | 672 | 674 | 667 | 671 | 3.6 | 0.5 |
25 μm双层背胶 | 800 | 829 | 805 | 811 | 15.5 | 1.9 |
40 μm单层背胶(A款) | 681 | 663 | 657 | 667 | 12.5 | 1.9 |
40 μm单层背胶(B款) | 642 | 660 | 651 | 651 | 9.0 | 1.4 |
40 μm双层背胶 | 725 | 713 | 755 | 731 | 21.6 | 3.0 |
Table 4 In-plane thermal conductivity test results of graphite film samples
石墨膜规格 | 面向热导率/( W·m-1·K-1) | |||||
---|---|---|---|---|---|---|
测试1 | 测试2 | 测试3 | 均值 | 标准差 | 相对标准差/% | |
17 μm单层背胶 | 945 | 977 | 984 | 969 | 20.8 | 2.1 |
17 μm双层背胶 | 529 | 524 | 539 | 531 | 7.6 | 1.4 |
25 μm单层背胶 | 672 | 674 | 667 | 671 | 3.6 | 0.5 |
25 μm双层背胶 | 800 | 829 | 805 | 811 | 15.5 | 1.9 |
40 μm单层背胶(A款) | 681 | 663 | 657 | 667 | 12.5 | 1.9 |
40 μm单层背胶(B款) | 642 | 660 | 651 | 651 | 9.0 | 1.4 |
40 μm双层背胶 | 725 | 713 | 755 | 731 | 21.6 | 3.0 |
石墨膜裸材规格 | 厚度/μm | 密度/(g·cm-3) | 闪光法测试/ (W·m-1·K-1) |
---|---|---|---|
17 μm裸材 | 18 | 1.979 | 1588 |
25 μm裸材 | 26 | 1.882 | 1398 |
40 μm裸材 | 40 | 1.978 | 1464 |
Table 5 Flash test data of bare sample
石墨膜裸材规格 | 厚度/μm | 密度/(g·cm-3) | 闪光法测试/ (W·m-1·K-1) |
---|---|---|---|
17 μm裸材 | 18 | 1.979 | 1588 |
25 μm裸材 | 26 | 1.882 | 1398 |
40 μm裸材 | 40 | 1.978 | 1464 |
石墨膜规格 | 总厚/μm | 实测密度/ (kg·m-3) | 密度预测/ (kg·m-3) | 热导率预测/ (W·m-1·K-1) | 本文测试/ (W·m-1·K-1) | 相对偏差/% |
---|---|---|---|---|---|---|
17 μm单层背胶 | 35 | 1785 | 1424 | 771 | 969 | 23 |
17 μm双层背胶 | 90 | 1002 | 1308 | 600 | 531 | -12 |
25 μm单层背胶 | 40 | 1317 | 1514 | 874 | 671 | -26 |
25 μm双层背胶 | 80 | 1548 | 1514 | 874 | 811 | -7.5 |
40 μm单层背胶A款 | 65 | 1354 | 1563 | 901 | 667 | -30 |
40 μm单层背胶B款 | 55 | 1222 | 1684 | 1065 | 651 | -48 |
40 μm双层背胶 | 125 | 1467 | 1590 | 937 | 731 | -25 |
Table 6 Comparison of graphite film sample test data and bare material prediction data
石墨膜规格 | 总厚/μm | 实测密度/ (kg·m-3) | 密度预测/ (kg·m-3) | 热导率预测/ (W·m-1·K-1) | 本文测试/ (W·m-1·K-1) | 相对偏差/% |
---|---|---|---|---|---|---|
17 μm单层背胶 | 35 | 1785 | 1424 | 771 | 969 | 23 |
17 μm双层背胶 | 90 | 1002 | 1308 | 600 | 531 | -12 |
25 μm单层背胶 | 40 | 1317 | 1514 | 874 | 671 | -26 |
25 μm双层背胶 | 80 | 1548 | 1514 | 874 | 811 | -7.5 |
40 μm单层背胶A款 | 65 | 1354 | 1563 | 901 | 667 | -30 |
40 μm单层背胶B款 | 55 | 1222 | 1684 | 1065 | 651 | -48 |
40 μm双层背胶 | 125 | 1467 | 1590 | 937 | 731 | -25 |
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