纳米二氧化硅增强聚氯乙烯韧性和塑化性能的研究  

Study on Toughening and Plasticizing Properties of PVC Reinforced by Nano Silica

作　　者：穆娟[1] 丁海琴 吕惠芳[1] MU Juan;DING Hai-qin;Lü Hui-fang(Wuxi Vocational Institute of Arts&Technology,Yixing 214200,China)

机构地区：[1]无锡工艺职业技术学院,江苏宜兴214200

出　　处：《塑料科技》2022年第1期62-65,共4页Plastics Science and Technology

基　　金：江苏省高等学校自然科学研究项目(19KJD430006)。

摘　　要：为了改变SiO_(2)表面基团,在纳米SiO_(2)表面接入修饰剂。研究改性SiO_(2)对PVC韧性和塑化性能的影响。结果表明:对于韧性方面,SiO_(2)/HB130F用量为3%时,改善PVC的力学性能效果最好。与空白实验相比,SiO_(2)/HB130F使PVC的弯曲强度、拉伸强度分别降低0.1%、3.7%,冲击强度提升124.5%。针对塑化性能方面,HB115F、HB120F或HB130F的用量为3%时,改善PVC塑化性能效果明显,使PVC的塑化时间分别减少63.5%、58.8%和55.3%。综上所述,DNS修饰的SiO_(2)对PVC的韧性和塑化性能改善效果明显,其中HB130F的改善效果最好。In order to change the surface groups of SiO_(2), the modifier was added on the surface of nano-SiO_(2). The effects of modified SiO_(2)on toughness and plasticizing properties of PVC were studied. The results show that when the content of SiO_(2)/HB130 F is 3%, the effect of improving the mechanical properties of PVC is the best. Compared with blank experiment, SiO_(2)/HB130 F reduces flexural strength and tensile strength of PVC by 0.1% and 3.7%, respectively, and increases the impact strength by 124.5%. In terms of plasticizing properties, when the dosage of HB115 F, HB120 F or HB130 F is 3%, the plasticizing properties of PVC is significantly improved, and the plasticizing time of PVC is reduced by 63.5%, 58.8% and 55.3%, respectively. To sum up, DNS modified SiO_(2)has obvious improvement effect on toughness and plasticization of PVC, and HB130 F has the best improvement effect.

关 键 词：纳米二氧化硅 聚氯乙烯 力学性能 塑化性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.3[化学工程—合成树脂塑料工业]