木粉含量对连续固态挤出自增强PP性能的影响
发布时间：2018-11-25 13:16
【摘要】：采用单螺杆挤出机连续固态挤出制备自增强聚丙烯(PP)复合材料试样,对不同木粉含量的试样性能进行表征和综合分析。结果表明,PP复合材料试样密度随着木粉含量的增加呈线性上升趋势;拉伸强度和弯曲强度呈现先上升后下降的趋势,而在木粉含量为50%时达到最大;拉伸弹性模量和弯曲弹性模量随着木粉含量的增加一直增大,但断裂伸长率下降;木粉含量的增加能够提高试样的耐热性,但结晶度有所下降;木粉含量过多会造成复合材料界面结合减弱,影响最终复合材料的性能。
[Abstract]:The self-reinforced polypropylene (PP) composites were prepared by continuous solid-state extrusion with a single screw extruder. The properties of the samples with different wood flour contents were characterized and comprehensively analyzed. The results show that the density of PP composites increases linearly with the increase of wood flour content, the tensile strength and bending strength increase first and then decrease, and reach the maximum when the wood flour content is 50. The tensile modulus and flexural modulus of elasticity increase with the increase of wood flour content, but the elongation at break decreases, and the heat resistance of the sample increases with the increase of wood flour content, but the crystallinity decreases. Excessive wood flour content will weaken the interfacial bonding of the composite and affect the properties of the final composite.
【作者单位】： 衢州学院机械工程学院;北京化工大学塑料机械及塑料工程研究所;
【基金】：浙江省自然科学基金项目(LQ16E030008) 国家级大学生创新创业训练计划项目(201611488004) 浙江省教育厅项目(Y201534120)
【分类号】：TB332
[Abstract]:The self-reinforced polypropylene (PP) composites were prepared by continuous solid-state extrusion with a single screw extruder. The properties of the samples with different wood flour contents were characterized and comprehensively analyzed. The results show that the density of PP composites increases linearly with the increase of wood flour content, the tensile strength and bending strength increase first and then decrease, and reach the maximum when the wood flour content is 50. The tensile modulus and flexural modulus of elasticity increase with the increase of wood flour content, but the elongation at break decreases, and the heat resistance of the sample increases with the increase of wood flour content, but the crystallinity decreases. Excessive wood flour content will weaken the interfacial bonding of the composite and affect the properties of the final composite.
【作者单位】： 衢州学院机械工程学院;北京化工大学塑料机械及塑料工程研究所;
【基金】：浙江省自然科学基金项目(LQ16E030008) 国家级大学生创新创业训练计划项目(201611488004) 浙江省教育厅项目(Y201534120)
【分类号】：TB332
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4 于e，
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