Yan Kui, Guo Wei, Mao Huajie, Yang Qing, Meng And Zhenghua
School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China.
Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China.
Polymers (Basel). 2020 Feb 7;12(2):363. doi: 10.3390/polym12020363.
A combined in-mold decoration and microcellular injection molding (IMD/MIM) method has been used in this paper. The foamed PP/nano-CaCO composites were prepared to investigate their mechanical properties, cellular structure, and surface quality. The content of nano-CaCO varied from 0 to 10 wt %. The results showed that nano-CaCO acted as a reinforcing phase and nucleating agent, which help to improve the mechanical properties of foamed composites. The cellular structure and mechanical properties were optimum when the nano-CaCO content was 6 wt %. In the vertical section, the cell size and density of transition layer on the film side was bigger than that on the non-film side. In the parallel section, the cell ratio of length to diameter of transition layer on the film side was smaller than that on the non-film side, and the cell tile angle was larger than that on the non-film side. With nano-CaCO content increasing, the surface quality showed a trend of decreasing first and then increasing.
本文采用了模内装饰与微孔注射成型相结合的方法（IMD/MIM）。制备了发泡聚丙烯/纳米碳酸钙复合材料，以研究其力学性能、泡孔结构和表面质量。纳米碳酸钙的含量从0到10 wt%不等。结果表明，纳米碳酸钙作为增强相和成核剂，有助于提高发泡复合材料的力学性能。当纳米碳酸钙含量为6 wt%时，泡孔结构和力学性能最佳。在垂直截面中，薄膜侧过渡层的泡孔尺寸和密度大于非薄膜侧。在平行截面中，薄膜侧过渡层泡孔的长径比小于非薄膜侧，泡孔铺展角大于非薄膜侧。随着纳米碳酸钙含量的增加，表面质量呈现出先下降后上升的趋势。
