PP-g-MAH改性SGF/PP泡沫复合材料的结构与力学性能研究
采用型内二次发泡工艺制备了马来酸酐接枝聚丙烯（PP-g-MAH）共混改性短玻璃纤维（SGF）/聚丙烯（PP）泡沫复合材料,考察了PP-g-MAH的含量对复合材料的泡孔形貌、微观结构和力学性能的影响。结果表明：PP-g-MAH的引入改善了泡沫体的发泡效果,平均孔径减小了约35%,泡孔密度提高近4倍且分布均匀;偶联剂的表面包覆和PP-g-MAH的共同作用改善了SGF与PP的相容性,显著增强了两者的界面结合;随SGF含量增加,SGF/PP泡沫复合材料的抗弯强度先增大后减小,而冲击强度则呈现先急剧增加而后趋缓的变化趋势。...
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| Published in | 材料工程 no. 11; pp. 57 - 60 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
南京航空航天大学材料科学与技术学院,南京210016%南京航空航天大学材料科学与技术学院,南京,210016
2012
安徽理工大学材料科学与工程学院,安徽淮南232001 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 1001-4381 |
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| Summary: | 采用型内二次发泡工艺制备了马来酸酐接枝聚丙烯（PP-g-MAH）共混改性短玻璃纤维（SGF）/聚丙烯（PP）泡沫复合材料,考察了PP-g-MAH的含量对复合材料的泡孔形貌、微观结构和力学性能的影响。结果表明：PP-g-MAH的引入改善了泡沫体的发泡效果,平均孔径减小了约35%,泡孔密度提高近4倍且分布均匀;偶联剂的表面包覆和PP-g-MAH的共同作用改善了SGF与PP的相容性,显著增强了两者的界面结合;随SGF含量增加,SGF/PP泡沫复合材料的抗弯强度先增大后减小,而冲击强度则呈现先急剧增加而后趋缓的变化趋势。 |
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| Bibliography: | YANG Ji-nian,LI Zi-quan（1 School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China;2 College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China） 11-1800/TB The short glass fiber（SGF）/polypropylene（PP） foam composites modified with maleic anhydride grafted PP（PP-g-MAH） were prepared via post-foaming process in designed dies.The influence of PP-g-MAH content on the cellular morphologies,microstructures and mechanical properties of composites were investigated.The results show that the outstanding improvement in foaming effect is realized by the addition of PP-g-MAH with a 35% reduction for average cell size and nearly four-fold increase in cell density.The compatibilities between SGF and PP are improved and their interfacial adhesion is enhanced significantly by the surface pretreatment of coupling agent as well as PP-g-MAH.The flexural strength of SGF/PP foam composites is increased first and then de |
| ISSN: | 1001-4381 1001-4381 |