竹缠绕复合材料的线膨胀系数测试  

Measurement of Linear Expansion Coefficient of Bamboo Winding Composites

作　　者：孙元平 姚毅恒 张淑娴 马建新 翁赟 SUN Yuanping;YAO Yiheng;ZHANG Shuxian;MA Jianxin;WENG Yun(Zhejiang Xinzhou Bamboo-based Composites Technology Company,Hangzhou 310000,China;State Forestry and Grassland Administration Engineering Research Center for Bamboo Winding Composites,Hangzhou 310000,China)

机构地区：[1]浙江鑫宙竹基复合材料科技有限公司,杭州310000 [2]国家林业和草原局竹缠绕复合材料工程技术研究中心,杭州310000

出　　处：《材料导报》2020年第S01期539-541,共3页Materials Reports

基　　金：“十三五”国家重点研发计划(2016YFD0600906)。

摘　　要：为准确计算竹缠绕复合材料产品尺寸随温度的变化量,利用线膨胀测试仪,在233~353 K(-40~80℃)区间内,测试了竹缠绕复合材料纵向和横向两个方向上的线膨胀系数。测试结果表明,竹缠绕复合材料在横向上的平均线膨胀系数为2.31×10^-5 K^-1,在纵向上的平均线膨胀系数为1.06×10^-5 K^-1。分析可知,两个方向上的线膨胀系数差异是由于竹蔑本身就是各向异性材料。In order to accurately calculate the change of product size of bamboo winding composite material with different temperature,the linear expansion coefficients of bamboo winding composites in both longitudinal and transverse directions were measured by using the linear expansion tester in the temperature range of 233—353 K(-40—80℃).Test results indicate that the average linear expansion coefficient of bamboo winding compo-sites is 2.31×10^-5 K^-1 in the transverse direction and 1.06×10^-5 K^-1 in the longitudinal direction.According to the analysis,the difference of linear expansion coefficient in the two directions is caused by the fact that the bamboo is an anisotropic material.

关 键 词：竹缠绕复合材料 线膨胀系数 各向异性 

分 类 号：TB332[一般工业技术—材料科学与工程]