三种颜色桉木/聚乙烯木塑复合材料耐酸雨腐蚀性能  

Acid Rain Corrosion Resistance of Three Colored Eucalyptus/polyethylene Wood Plastic Composites

作　　者：肖舜仁 蒋倪鑫 顾瑶琼 姜彩昀 何春霞[1,2] XIAO Shunren;JIANG Nixin;GU Yaoqiong;JIANG Caiyun;HE Chunxia(College of Engineering,Nanjing Agricultural University,Nanjing 210031,China;Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province,Nanjing 210031,China)

机构地区：[1]南京农业大学工学院,江苏南京210031 [2]江苏省智能化农业装备重点试验室,江苏南京210031

出　　处：《材料科学与工程学报》2020年第4期674-679,共6页Journal of Materials Science and Engineering

基　　金：国家大学生创新创业训练计划资助项目(201710307097)。

摘　　要：对黄色、绿色和银色桉木/PE木塑复合材料进行模拟酸雨加速腐蚀实验,比较了模拟酸雨腐蚀对三种有色桉木/PE木塑复合材料的化学基团、力学性能、颜色变化和微观结构的影响。结果表明:随着腐蚀周期的增长,三种颜色木塑复合材料出现褪色、力学性能下降及吸水率增大现象,但添加银色颜料的桉木/PE木塑复合材料褪色程度较低、性能下降较小、吸水率增加较小。银色木塑复合材料经腐蚀三个周期后弯曲强度分别下降了12.93%、16.84%、24.16%,黄色木塑复合材料腐蚀三个周期后弯曲强度分别下降了13.07%、19.13%、33.64%,绿色木塑复合材料腐蚀三个周期后弯曲强度分别下降了19.35%、24.19%、28.91%。银色桉木/PE复合材料两相界面结合较为紧密,裂纹和孔洞缺陷较其它两种颜色复合材料显著减少。In order to investigate the acid rain corrosion resistance of pigmented eucalyptus/polyethylene(PE)composites,simulated acid rain accelerated corrosion experiments were carried out on three colored(yellow,green and silver)eucalyptus/PE wood-plastic composites.The effect of simulated acid rain corrosion on the chemical groups,mechanical properties,discoloration and microstructures of the three types of eucalyptus/PE composites were compared.The results show that an extended corrosion time tends to result in higher discoloration and water absorption,and poorer mechanical properties.However,the eucalyptus/PE wood-plastic composite with silver pigment has a lower degree of fading,less performance degradation,and less water absorption.After three cycles of corrosion,the reductions of flexural strength are 12.93%,16.84%and 24.16%,respectively,for silver eucalyptus/PE composites,and 13.07%,19.13%and 33.64%,respectively,for yellow eucalyptus/PE composites,and 19.35%,24.19%and 28.91%,respectively,for green eucalyptus/PE composites.In comparison to the yellow and green eucalyptus/PE composites,the fracture surface of the silver eucalyptus/PE composite material is tightly bonded,and the cracks and hole defects are significantly improved compared.

关 键 词：桉木纤维 聚乙烯 酸雨腐蚀 FTIR 力学性能 

分 类 号：TB313.2[一般工业技术—材料科学与工程]