数值方法在平板准稳态法测量有机玻璃热物性实验中的应用

中国塑料 ›› 2007, Vol. 21 ›› Issue (1): 91-94.

数值方法在平板准稳态法测量有机玻璃热物性实验中的应用

曾文辉¹，周孑民²

1，东莞新能源电子科技有限公司研发部，广东东莞523080; 2，中南大学能源科学与工程学院，湖南长沙410083

出版日期:2007-01-26 发布日期:2021-03-04
基金资助:
国家自然科学基金项目(50376076)

Application of Numerical Method in Thermal Property Measurement of Poly ( methyl methacrylate) by Quasi-steady State Method

ZENG Wen-hui¹，ZHOU Jie-min²

1 .Department of New Product Development, Dongguan Amperex Electronics Technology Co.，Ltd Dongguan 523080, China; 2. School of Energy Science and Engineering, Central South University, Changsha 410083 , China

Online:2007-01-26 Published:2021-03-04

摘要/Abstract

摘要： 利用数值方法对平板准稳态法实验获得的有机玻璃试样的导热率及比热容进行了修正。在修正的过程中，使用了步进法，以计算曲线的热、冷端温差及其热、冷端温升速率与实验曲线相等为计算终止条件，最终获得修正的导热率及比热容。其修正幅度分别为1.7%和2. 8%，且修正后的数值均在相关文献的报道范围之内。

关键词: 平板准稳态法, 导热率, 比热容, 数值方法, 有机玻璃

Abstract: The numerical method was applied to correct the experimental thermal conductivity and spe-cific heat of poly(methyl methacrylate) measured via quasi-steady state plate method. In the correction. the step-by-step method was used.The calculation was ended until the temperature difference and tem perature rise speed rate of the calculated curves match the relative data of the experimental curves. The correction amplitude of the thermal conductivity and the specific heat is 1.7 % and 2.8 %,respective- ly,and the corrected data was in the recommended range of relevant references.

Key words: plate quasi-steady state method;thermal conductivity, specific heat, numerical method;poly(methyl methacrylate)

中图分类号:

TQ317. 3

曾文辉, 周孑民. 数值方法在平板准稳态法测量有机玻璃热物性实验中的应用[J]. 中国塑料, 2007, 21(1): 91-94.

ZENG Wen-hui, ZHOU Jie-min. Application of Numerical Method in Thermal Property Measurement of Poly ( methyl methacrylate) by Quasi-steady State Method [J]. China Plastics, 2007, 21(1): 91-94.

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