PTW含量对回收饮料瓶R-PET/PC共混材料性能的影响

高分子材料科学与工程, 2014, 30(10): 66-71.

PTW含量对回收饮料瓶R-PET/PC共混材料性能的影响

李迎春 ^1, , 马星慧 ^2, , 乔冰 ^3, , 贺茂勇 ^4, , 宋晶晶 ^5,

1.中北大学材料科学与工程学院,山西太原030051

2.中北大学材料科学与工程学院,山西太原030051

3.中北大学材料科学与工程学院,山西太原030051

4.中北大学材料科学与工程学院,山西太原030051

5.中北大学材料科学与工程学院,山西太原030051

关键词：乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯 , 回收聚酯饮料瓶 , 聚碳酯酯 , 增容 , 增韧

Effect of PTW Contents on Properties of Recycled Drink Bottles R-PET/PC Blends

Keywords： PTW , recycled polyethylene terephthalate , polycarbonate , compatibility , toughening

乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯(PTW)是一种含有缩水甘油酯型环氧的三元共聚物.以PTW为增容剂,采用双螺杆挤出机熔融制备出R-PET/PC/PTW共混材料.通过力学性能测试、黏度测试、红外光谱分析、冲击断面扫描电镜分析等,研究了PTW含量的变化对共混材料结构和性能的影响.研究表明,随着PTW含量的不断增多,R-PET/PC/PTW共混材料冲击断面中两相相界面越来越模糊,相容性明显改善;共混材料特性黏度不断提高,熔体流动速率(MFR)逐渐变小;当PTW含量在10％时,黏度达到0.6328 dL/g,共混材料的综合力学性能最佳,缺口冲击强度达到11.74 kJ/m2,比不加PTW的R-PET/PC共混物的冲击强度2.41 kJ/m2提高近4倍.共混材料弯曲强度有所提高,拉伸强度有少许的下降,但断裂伸长率大幅提高,说明PTW对R-PET/PC共混材料是一种很好的增韧增容剂.

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