化工学报2016，Vol.67Issue(z2)：38-45,8.DOI:10.11949/j.issn.0438-1157.20161403
热膨胀系数简易测量装置研制及若干材料测量
Development of simple thermal expansion coefficient measurement apparatus and its application to several materials
摘要
Abstract
With liquid nitrogen as coolant,a simple thermal expansion coefficient measurement apparatus for solid materials was developed based on a micrometer.It can be applied in the temperature range from 80 K to 353 K.The thermal expansion coefficient of serval typical materials such as copper T1,aluminum 6060,stainless steel 304,nylon and epoxy G10 were measured and compared with literature data.The repeatability and relative uncertainty of the present data were found to be higher than 99.3% and less than 3.34%,respectively.The maximum relative deviation and the mean deviation between the measuring data and literature data were less than 6.0% and 3.1% respectively in the temperature range from 80 K to 353 K.Based on the verification,the expansion coefficient of some other materials widely applied in high/low temperature environment engineering such as invar,aluminum 6062,stainless steel 31 6,carbon steel 45, Teflon and ABS plastics were also measured.关键词
热膨胀系数/低温/材料物性/测量装置Key words
thermal expansion coefficient/low temperature/material properties/measurement apparatus分类
通用工业技术引用本文复制引用
黄永华,吴哲,李晓慈,董巨辉..热膨胀系数简易测量装置研制及若干材料测量[J].化工学报,2016,67(z2):38-45,8.基金项目
国家自然科学基金项目(51676118) （51676118）
航天低温推进剂技术重点实验室基金项目(SKLTSCP1206)。@@@@supported by the National Natural Science Foundation of China (51676118)and the Open Research Fund of the State Key Laboratory of Technologies in Space Cryogenic Propellants (SKLTSCP1206) （SKLTSCP1206）
