Study on foaming behavior of microcellular PP/inorganic powder composites
The modified inorganic powder material (one-dimensional MgSO4 whisker, two-dimensional Mica, zero-dimensional SiO2 ) was added into polypropylene with 5％ wt. The microcellular foam PP composite was prepared under the condition of twice-open mold. According to the principle of interfacial adhesion, Liquid-solid interface free energy of PP composite system was calculated by means of the contact angle. Based on heterogeneous nucleation theory, foaming behavior of microcellular foam material was characterized quantitatively by interfacial behavior. The effects of different inorganic powder material on foaming behavior were analyzed in microcellular foam polypropylene. The results indicated that the minimum nucleation energy barrier of PP/Mica composite system is 46.94N.mwith the nucleation rate in 5.53×1011. After foaming, the cell diameter of the composite is 22.1μm and the cell density is 6.92×108 months/cm3.
PP energy barrier of nucleation microcellular foam foaming behavior interfacial behavior
Wei Gong Chun Zhang Jie Yu Jian-Hua Zhu Li He
Department of Material and Building Engineering, Guizhou Normal University,Guiyang 550014, China Nat National Engineering Research Center for Compounding and Modification ofPolymeric Materials, Guiyang National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyan
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
454-460
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）