Effect of foaming agent on microcellular unsaturated polyester
Microcellular unsaturated polyester was prepared by different foaming agents was studied.Compared with the cell size and density of microcellular unsaturated polyester prepared using azodicarbonamide (AC),the ones of microcellular unsaturated polyester prepared using NaHCO3 were small.For NaHCO3,the cell density of microcellular unsaturated polyester decreased with the increasing temperature.For microcellular unsaturated polyester prepared using NaHCO3 at 100 ℃,the average cell size was about 18 μm and the cell density was 1.1 × 1010 celis/cm3.The compression strength at 100 ℃ is strongest among that of the materials at the other temperature.The average compression strength was 24.2 MPa.The compression strength-to-weight ratio of microcellular unsaturated polyester prepared at 90 ℃ and 100 ℃was about twice that of unsaturated polyester.
unsaturated polyester microcell cell size cell density compression strength
Xueni Zhao Jianpeng He Peipei Zhai Wei Ren
College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology,Xian Shaanxi 710021, PR China
国际会议
香港
英文
172-176
2012-12-11(万方平台首次上网日期,不代表论文的发表时间)