摘要
采用熔融接枝法,合成了不同官能化程度的甲基丙烯酸环氧丙酯(GMA)接枝聚烯烃弹性体(POE-gGMA),作为聚对苯二甲酸乙二醇酯(PET)的增韧改性剂。考察了不同接枝率的POE对PET的增韧效果。通过红外光谱表征确定了预期反应的发生,根据红外工作曲线测定了样品的接枝率。结果表明,随着POE-g-GMA接枝率的增加,POE在PET中的分散相尺寸明显减小;共混物的熔体质量流动速率降低,PET与POE间的相容性增加;共混物冲击强度明显提高,拉伸强度也有所提高,PET能够被有效增韧。当接枝率为1.188%时,对PET的增韧效果达到最佳。
Polyolefinic elastomer （ POE ） was functionalized to varying degrees with glycidyl methacrylate （GMA） by melt grafting processes. The POE-g-GMA elastomers were used to toughen poly （ ethylene terephthalate） （PET）. The effect of POE with different grafting rate on the toughening property of PET was investigated. The reaction was confirmed by FTIR results and the grafting degree of POE-g-GMA copolymers were determined by infrared calibration curve. Results showed that the increase of the grafting degree of POE-g-GMA reduced the particle size of the dispersed phase in the PET blends and decreased the melt flow rate of blends. The compatibility of blends was improved, and the impact and tensile strength of blends was improved significantly. When the grafting degree was over 1. 188%, PET resin was effectively toughened.
出处
《塑料工业》
CAS
CSCD
北大核心
2013年第11期95-99,共5页
China Plastics Industry
