rPET/R-MFMB/GF复合材料的结构及力学性能研究  

STRUCTURE AND MECHANICAL PROPERTIES OF rPET/R-MFMB/GF COMPOSITIES

作　　者：郑丽娜[1] 吕亚男[1] 魏金刚[1] 代佳丽[1] 王经武[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450052

出　　处：《工程塑料应用》2010年第11期8-11,共4页Engineering Plastics Application

摘　　要：采用自制的反应性多功能母料(R-MFMB)及玻璃纤维(GF)与废旧聚对苯二甲酸乙二酯(rPET)热机械反应性共混,制得rPET/R-MFMB/GF复合材料,对其化学结构、形态结构及力学性能进行研究。结果表明,R-MFMB中的环氧官能团与rPET分子链上的端—OH、端—COOH以及GF表面的—NH2均能发生化学反应,大部分R-MFMB自组装于rPET与GF的界面区,构筑成强结合力适度柔性界面的结构特征。R-MFMB及GF的含量对rPET/R-MFMB/GF的力学性能有明显的影响,其配比为55/15/30时,复合材料的悬臂梁缺口冲击强度、弯曲弹性模量分别提高到原料rPET的3.52倍、3.21倍,综合力学性能也显著优于rPET/GF质量比为70/30复合材料。The composites of rPET/R-MFMB/GF were prepared through the thermal-mechanical reactive blending, which consisted of self-made reactive muhifunctional masterbatch （ R-MFMB）, glass fiber （GF） and recycled poly （ ethylene terephthalate） （rPET）. The chemical structure, morphological structure and mechanical properties of the composites were studied. The results showed that the epoxy functional groups of R-MFMB could take place chemical reaction with both the end-groups of --OH and --COOH of rPET molecular chains and the groups of --NH2 on the surface of GF. A considerable part of R-MFMB self-assemblied on the interface between rPET and GF, which seemed to form the structural characteristics of the strong bonding, moderate flexible interface. The content of R-MFMB and GF significantly influenced the mechanical properties of rPET/R-MFMB/GF, and further, the notched izod impact strength（NIIS） and flexural modulus（FM） of the composites with the ratio rPET/R-MFMB/GF = 55/15/30 improved to 3.52 times and 3.21 times as pure rPET＇ s respectively. The synthetic mechanical properties of rPET/R-MFMB/GF were better than those of the binary composites of rPET/GF = 70/30.

关 键 词：反应性多功能母料 废旧聚对苯二甲酸乙二酯 玻璃纤维 结构 柔性界面 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]