具备隔音隔热性能的PVC复合材料的制备及其性能研究  

Preparation and Properties of PVC Composites with Sound Insulation and Thermal Insulation Properties

作　　者：胡晓娜[1] HU Xiao-na(Shanxi Polytechnic College,Shanxi 030006,China)

机构地区：[1]山西职业技术学院,山西太原030006

出　　处：《塑料科技》2024年第1期71-74,共4页Plastics Science and Technology

基　　金：山西省教育科学“十四五”规划2021年度专项课题(PJ-21033)。

摘　　要：以回收废弃聚氯乙烯(PVC)管材料粉末为原料,利用三烯丙基异氰脲酸酯(TAIC)对其进行扩链改性,再添加硅烷偶联剂KH-550改性的SiO_(2)空心微珠,制备了具有隔音隔热功能的PVC板材,实现对废弃PVC材料的回收利用。结果表明:TAIC能够有效提高PVC熔体黏度,并通过扩大PVC分子链长度改善PVC板的力学性能。改性SiO_(2)微珠能够对PVC起增刚作用,从而提高PVC板的力学性能。改性SiO_(2)微珠能够提高PVC板疏水性和隔音、隔热性能。当改性SiO_(2)微珠含量为3份时,PVC板的导热系数从0.35 W/(m·K)降至0.14 W/(m·K)。当改性SiO_(2)微珠含量为15份时,PVC板在800~1 400 Hz段的最大声波阻隔率从50%左右提高到97%左右。Using recycled waste polyvinyl chloride(PVC) pipe powder as a raw material,the chain extension modification was carried out by triallyl isocyanurate(TAIC),and SiO_(2) hollow microspheres modified by silane coupling agent KH-550 were added to prepare PVC board with sound insulation and heat insulation function,so as to realize the recycling of waste PVC material.The results show that TAIC can effectively increase the viscosity of PVC melt and improve the mechanical properties of PVC board by enlarging the molecular chain length of PVC.Modified SiO_(2) microspheres can enhance the stiffness of PVC,thus improving the mechanical properties of PVC board.Modified SiO_(2) microbeads can improve the hydrophobicity,sound insulation,and heat insulation performance of PVC board.When the content of modified SiO_(2) microspheres is 3 phr,the thermal conductivity of PVC board decreases from 0.35 W/(m·K) to 0.14 W/(m·K).When the content of modified SiO_(2) microspheres is 15 phr,the maximum acoustic wave barrier ratio of PVC board is increased from about 50% to about 97% in the range of 800~1 400 Hz.

关 键 词：聚氯乙烯 三烯丙基异氰脲酸酯 SiO_(2)空心微珠 隔音性能 隔热性能 力学性能 

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]