摘要
以乙烯醋酸乙烯酯(EVA)为载体,采用溶剂法制备芳纶浆粕(PPTA-pulp)胶粒,利用双螺杆熔融挤出共混的方法制备了芳纶浆粕胶粒/聚丙烯(PP)复合材料,研究了氧等离子体处理及氧等离子体处理和聚丙烯接枝马来酸酐(MPP)组合使用对芳纶浆粕增强聚丙烯复合材料力学性能的影响,研究了复合材料的断面形态和动态力学行为。结果表明氧等离子体处理可以在芳纶浆粕表面引入活性基团,从而使纤维与基体之间的界面粘结得到增强,提高了复合材料的力学性能、动态储存模量和PP的玻璃化转变峰温度,添加MPP后,复合材料的力学性能得到更进一步改善。
PPTA-pulp colloidal particle is prepared with EVA as the matrix via the solvent method. The composites of Kevlar pulp （PPTA-pulp） colloidal particle and polypropylene （PP） are prepared using twin-screw extruder. Effects of oxygen plasma treatment and oxygen plasma treatment combined with compatibihzers on mechanical properties of PPTA-pulp-reinforced PP are studied. The morphology and the dynamic mechanical properties of the composites are investigated by using SEM and DMA. The results show that active groups are introduced after oxygen plasma treatment, which can advance the affinity between PPTA-pulp and PP molecular. The mechanical performance, storage modulus and glassification temperature of surface treated PPTA-pulp-reinforced PP are increased in comparison to the untreated composites. The mechanical properties of the composites are even better after treating with combination of oxygen plasma treatment and MPP addition.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2008年第2期47-49,51,共4页
Modern Chemical Industry
