摘要
合成了甲基丙烯酸甲酯-丁二烯-苯乙烯-甲基丙烯酸环氧丙酯(MBS-g-GMA)核壳粒子用于聚碳酸酯(PC)的增韧,并在PC/MBS-g-GMA共混物中引入聚对苯二甲酸丁二醇酯(PBT)以提高性能。PBT的加入使MBS-g-GMA在PC中分散更均匀;共混物缺口冲击强度进一步提高,PBT质量分数为20%时,冲击强度接近700J/m;PBT提高了PC/MBS-g-GMA共混物的熔体流动速率,使加工性能得到改善。断裂形态表明,PBT加入后共混物应力发白区尺寸增加,剪切屈服更明显,共混物韧性提高。
Methyl methacrylate-butadiene-styrene-glycidyl methacrylate（MBS-g-GMA） core-shell particles were prepared to toughen polycarbonate（PC）.The addition of poly（butylene terephthalate）（PBT） into the blends improves the dispersion of PC/MBS-g-GMA and MBS-g-GMA in PC matrix.The notched impact strength of the blends is improved,and when the mass fraction of PBT is 20%,impact strength of 700J/m can be achieved.The melt flow rate of PC/MBS-g-GMA blends increases with the introduction of PBT and the processability is improved.The fracture morphology shows the size of stress-whitening zone increases due to the addition of PBT and the shear yielding becomes much obvious and the toughness of the blends is improved.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2012年第9期40-43,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50803007)
吉林省科技发展计划项目(20090142)
关键词
聚碳酸酯
聚对苯二甲酸丁二醇酯
核壳粒子
结构
性能
polycarbonate
poly（butylene terephthalate）
core-shell particles
structure
properties
