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材料导报  2019, Vol. 33 Issue (18): 3135-3139    https://doi.org/10.11896/cldb.18070183
  高分子与聚合物基复合材料 |
溶液共混法制备碱式硫酸镁晶须/聚丙烯复合材料及其力学性能
党力, 李宛琴, 吕智慧, 胡杰林, 次旺拉姆, 刘威
青海大学化工学院,西宁 810016
Preparation and Mechanical Properties of Polypropylene/Magnesium Oxysulfate Whisker Composites by Solution Blending Method
DANG Li, LI Wanqin, LYU Zhihui, HU Jielin, CIWANG Lamu, LIU Wei
School of Chemical Engineering, Qinghai University, Xining 810016
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摘要 以二甲苯作为溶剂、聚丙烯(PP)作为基体、月桂改性的碱式硫酸镁晶须(MOSw)作为填料,采用溶液共混法制备了一系列碱式硫酸镁晶须/聚丙烯(PP/MOSw)复合材料。力学性能测试结果表明:当MOSw添加量小于5%(质量分数,下同)时,复合材料的拉伸强度、屈服强度及冲击强度均有明显提升。随着MOSw添加量的进一步增大,PP/MOSw复合材料的拉伸强度和屈服强度反而下降,但仍然优于相同添加量的熔融共混法样品。断面扫描电镜(SEM)结果表明:当MOSw添加量小于5%时,其分散较为均匀;当MOSw添加量较大时,其在基体中易发生团聚,且团聚体与基体之间的相容性差。此外,还采用Turcsányi方程定量计算了填料与基体之间的界面相互作用,结果同样表明:当MOSw添加量小于5%时,晶须与基体之间的界面相互作用较强;随着MOSw添加量的增大,晶须与基体之间的界面相互作用减弱。
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党力
李宛琴
吕智慧
胡杰林
次旺拉姆
刘威
关键词:  溶液共混法  碱式硫酸镁晶须  聚丙烯  界面相互作用    
Abstract: Aseries of polypropylene/magnesium oxysulfate whisker (PP/MOSw) composites were prepared via solution blending method, using xylene as solvent, PP resin as matrix and lauric acid modified MOSw as filler. Mechanical property tests showed that the tensile strength, yield strength and impact strength were all greatly increased when the amount of MOSw was less than 5wt%. With the further increase of MOSw content, the tensile strength and yield strength of PP/MOSw composites turned to decline, but still greater than those of composites prepared via melt blending method. The SEM analyses of fracture surface implied that less than 5wt% amount of MOSw was well-dispersed. However, great amount of MOSw easily led to aggregating and had poor compatibility with PP matrix. Besides, Turcsányi equation was used to quantitative calculate the interfacial interaction between MOSw and PP matrix. The results also confirmed that less than 5wt% amount of MOSw led to stronger interfacial interaction. With the increase of MOSw content, the interfacial interaction instead became weaker.
Key words:  solution blending method    magnesium oxysulfate whisker    polypropylene    interfacial interaction
               出版日期:  2019-09-25      发布日期:  2019-07-31
ZTFLH:  TB332  
基金资助: 国家自然科学基金(21868030);青海大学博士科研启动基金(4106040151)
通讯作者:  danglix@163.com/dangli@qhu.edu.cn   
作者简介:  党力,青海大学讲师,于2017年6月在中国科学院大学青海盐湖研究所获得无机化学专业理学博士学位,毕业后就职于青海大学化工学院。目前,以第一作者在国内外学术期刊上发表论文10余篇,授权国家发明专利1项。研究工作主要围绕聚合物/无机材料复合材料,开展关于盐湖新型无机材料表面改性的理论研究及其在聚合物基体中的应用研究等。
引用本文:    
党力, 李宛琴, 吕智慧, 胡杰林, 次旺拉姆, 刘威. 溶液共混法制备碱式硫酸镁晶须/聚丙烯复合材料及其力学性能[J]. 材料导报, 2019, 33(18): 3135-3139.
DANG Li, LI Wanqin, LYU Zhihui, HU Jielin, CIWANG Lamu, LIU Wei. Preparation and Mechanical Properties of Polypropylene/Magnesium Oxysulfate Whisker Composites by Solution Blending Method. Materials Reports, 2019, 33(18): 3135-3139.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.18070183  或          http://www.mater-rep.com/CN/Y2019/V33/I18/3135
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