添加落叶松树皮粉对杨木粉/HDPE复合材料性能的影响  

Effects of the Addition of Larix Gmelini Bark Flours on the Property of Poplar Wood Flours/HDPE Composites

作　　者：黄海兵[1] 张佳彬[1] 吕蕾[1] 王赫昱 高鹏[1] 

机构地区：[1]黑龙江省木材科学研究所,哈尔滨150081

出　　处：《森林工程》2018年第1期46-50,70,共6页Forest Engineering

基　　金：黑龙江省林业科学院青年基金项目(201409);黑龙江省财政自拟项目(HCZ201704)

摘　　要：本文用落叶松树皮粉替代部分或全部杨木粉,采用挤出法制备落叶松树皮粉/杨木粉/高密度聚乙烯(HDPE)复合材料,测试其抗弯性能、拉伸性能、冲击强度和流变性能。研究发现,添加少量落叶松树皮粉(10份)对杨木粉/HDPE复合材料的力学性能没有显著影响,过高则使性能有所下降,但能够改善物料流动性,有利于提高生产效率。方差分析发现,与未添加落叶松树皮粉复合材料相比,添加10份落叶松树皮粉后,对材料的弯曲模量,拉伸强度和拉伸模量的影响不显著。旋转流变测试发现,当落叶松树皮粉份数增加时,复合材料熔体的储能模量和粘度系数都在降低,当落叶松树皮粉份数大于20份时,复合材料熔体的储能模量和粘度系数变化趋势比较相似。而转矩流变发现,当落叶树皮粉份数增加时,熔体的平衡温度和平衡转矩都在增加。In present study, part of poplar wood flours （ WF） was replaced by larix gmelini bark flours （ BF） and the BF /WF / high density polyethylene （ HDPE） composites were prepared by extrusion method. The flexural performances, tensile properties, impact and rheological properties of the resulting composite were tested. The study found that bark less than 10 weight part had no sig-nificantly effect on these properties, however, bark four of more than 10 weight part decreased the mechanical properties of WF/BF/ HDPE composite. Addition of bark flowers could improve the fluidity of BF/WF/HDPE mixture and the efficiency of production. Va-riance analysis found that compared with composite by addition of 0 bark flowers, bending modulus, tensile strength and tensile modu-lus of materials were not significantly affected by 10 weight part. Rotating rheological tests showed that storage modulus and complex viscosity of melts reduced with the increasing of bark flours usage. When bark weight part was more than 20, the storage modulus and complex viscosity among each composite group were similar, respectively. Equilibrium temperature and equilibrium torque of WF/BF/ HDPE composites increased with bark raising.

关 键 词：落叶松树皮粉 HDPE 复合材料 力学性能 流变性能 

分 类 号：TS653[轻工技术与工程]