一种新型多功能助剂在聚丙烯/滑石粉复合材料中的应用

Study on Application of a Novel Multifunctional Additive for Polypropylene/Talcum Powder Composites

将自制新型多功能助剂DZHA-200应用于聚丙烯/滑石粉复合材料中,在表征了DZHA-200熔融和耐热性能基础上,考察了该助剂对复合材料的加工性能、滑石粉的分散性能以及宏观性能的影响。结果表明,与市售分散剂乙撑双硬脂酰胺(EBS)相比,DHZA-200更有利于提高复合材料的加工性能,提高了滑石粉在聚合物基体中的分散效果;当DZHA-200用量为1份(质量份,下同)时,复合材料的熔体流动速率、拉伸强度、断裂伸长率、简支梁缺口和非缺口冲击强度分别提高了53%、5%、27%、6%和18%,而复合材料的弯曲性能变化不大。

This article reported a study on the application of a novel multifunctional additive,DZHA-200,for polypropylene(PP)/talcum powder composites.Effect of this additive on processing and mechanical properties of the composites as well as dispersibility of talcum powder were investigated through characterizations of melt and thermal stability of DZHA-200.The results indicated that DZHA-200 could improve processability of the composites and enhance the dispersibility of talcum powder in the matrix in comparison with commercially available additives.When 1 phr of DZHA-200 was added into the composites,melt flow rate,tensile strength,elongation at break,notched Charpy impact strength and un-notched Charpy impact strength were improved by 53%,5%,27%,6%and 18%,respectively.However,there was little influence on flexural properties of the composites.