摘要
分别采用环氧树脂(EP)与三醋酸甘油酯(GT)对二醋酸纤维素(CA)进行增韧改性制备CA/EP与CA/GT复合材料。与CA/GT复合材料相比,CA/EP复合材料在达到相同的拉伸强度时,所获得的断裂伸长率更高。同时随着EP添加量的增多,CA/EP复合材料的冲击强度也随之增加,韧性得到显著改善。通过维卡软化点测试,可以发现CA/EP复合材料的耐热性能更加优异。增塑剂迁移率测试表明,CA/EP复合材料迁移率较CA/GT明显降低。透明度测试与SEM表明,EP与CA之间相容性较好,并且EP的加入,可以诱导CA从脆性断裂向韧性断裂发生转变。
Epoxy resin （EP） and glycerol triacetate （GT） were used to toughen cellulose diacetate （CA） to prepare CA/EP and CA/GT composites. Compared with CA/GT composites, CA/EP composites obtain higher elongation at break upon reaching the same tensile strength. Simultaneously, with the increase in the amount of EP, the impact strength of CA/EP composites also increases, and the toughness is significantly improved. By Vicat softening point test, the heat resistance of CA/EP composites is more excellent. Plasticizer migration rate test results show that CA/EP composites＇ mobility is lower than the CA/ GT composites. UV transparency test and scanning electron microscope analysis show that EP and CA have good compatibility and CA can be induced to shift from brittle fracture to ductile fracture by EP.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第9期45-48,75,共5页
China Plastics Industry
基金
江苏省产学研项目BY2015019-02
