宇航材料工艺2012，Vol.42Issue(6)：60-64,5.
高密度PMI泡沫塑料的制备、结构与性能研究
Preparation, Structure and Properties of High Density PMI Foam
张乐 1张广成 1米星宇 1刘良威1
作者信息
- 1. 西北工业大学理学院应用化学系,西安710129
- 折叠
摘要
Abstract
High density Polymethacrylimide (PMI) foam was prepared by using methacrylic acid(MAA) and acrylonitrile( AN) as the main monomers. The influence of the flowing agent dosage, foaming temperature and foaming time on the density of PMI foam was discussed. The microstructure, mechanical performance and dielectric electrical properties at 10 GHz of the high-density PMI foam were studied. The results indicate that high-density PMI foam with the density of 150 to 450 kg/m3 can be obtained by foaming 40 min at 170 to 180t with 1 to 5 phr flowing a-gent. The bubble edges and bubble walls of the high-density PMI foam gradually thickened with the increase of the foam density, following the decrease of the average cellular diameter. Meanwhile, the mechanical properties including compression strength, tensile strength was improved gradually, which was closen to the theoretically calculated values, and the dielectric constant and dielectric loss increased linearly at the same time.关键词
高密度/PMI泡沫塑料/微观结构/力学性能/介电性能Key words
High density/ PMI foam plastics/ Microstructure/ Mechanical performance/ Dielectric properties引用本文复制引用
张乐,张广成,米星宇,刘良威..高密度PMI泡沫塑料的制备、结构与性能研究[J].宇航材料工艺,2012,42(6):60-64,5.
