碳酸钙晶须对HDPE/木粉复合材料力学性能和热稳定性影响  

Influence of CaCO_3 Whisker on the Mechanical Properties and Thermal Stability of HDPE/Wood Flour Composites

作　　者：张筱茜 姜艳霞 张俊佳 赵震 杨永晟 孙秋菊 宋剑斌 ZHANG Xiao-qian;JIANG Yan-xia;ZHANG Jun-jia;ZHAO Zhen;YANG Yong-sheng;SUN Qiu-ju;SONG Jian-bin(Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China)

机构地区：[1]沈阳师范大学化学化工学院能源与环境催化研究所,辽宁沈阳110034

出　　处：《塑料工业》2019年第4期123-126,共4页China Plastics Industry

基　　金：辽宁省自然科学基金引导项目(20180551250);沈阳师范大学博士;引进人才科研项目启动基金(BS201816;BS201838)

摘　　要：采用碳酸钙(CaCO_3)晶须与木粉、高密度聚乙烯(HDPE)复合,通过挤出和注塑制备CaCO_3/HDPE/木粉复合材料。借助材料试验机、热重分析仪等研究CaCO_3晶须质量分数对HDPE/木粉复合材料力学性能、吸水率和热稳定性的影响。结果表明,CaCO_3晶须可以有效改善HDPE/木粉复合材料的力学性能。拉伸强度、弯曲强度和冲击强度分别提高了43. 7%、19. 3%、20. 1%。通过60℃热水浸泡实验,发现HDPE/木粉复合材料的吸水率得到进一步降低。热重分析结果证实CaCO_3晶须的加入在一定程度上改善了HDPE/木粉复合材料的热稳定性。Calcium carbonate( CaCO3) whisker,wood flour and high density polyethylene( HDPE)were utilized to prepare CaCO3/HDPE/wood flour composites by extrusion and injection methods. The influence of CaCO3 on the mechanical properties,water absorption and thermal stability of HDPE/wood flour composites were studied through material testing machine and thermogravimetric( TG) analyzer. The results show that the introduction of CaCO3 whisker effectively improves the tensile strength,flexural strength and notched impact strength of HDPE/wood flour composites, which increase 43. 7%, 19. 3% and 20. 1%,respectively. In addition,the water absorption of HDPE/wood flour composites is further reduced,which is supported by soaking test( 60 ℃). The analysis of TG proves that the addition of CaCO3 whisker could improve the thermal stability of HDPE/wood flour composites.

关 键 词：木粉 高密度聚乙烯 碳酸钙晶须 力学性能 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]