中国塑料 ›› 2009, Vol. 23 ›› Issue (12): 39-43 .DOI: 10.19491/j.issn.1001-9278.2009.12.009

• 材料与性能 • 上一篇    下一篇

聚(苯乙烯-丙烯酰胺)/蒙脱土核壳结构材料改性聚酰胺6的性能研究

吴 唯 陈军 何思阳 杨竹亭 陈 川   

  1. 华东理工大学材料科学与工程学院 华东理工大学 材料科学与工程学院 华东理工大学材料科学与工程学院 华东理工大学材料科学与工程学院 华东理工大学材料科学与工程学院
  • 收稿日期:2009-08-10 修回日期:2009-10-16 出版日期:2009-12-26 发布日期:2009-12-26

Properties of Nylon 6 Composite Modified by the P(St-AM)/OMMT Core–shell Structures

Wei Wu   

  • Received:2009-08-10 Revised:2009-10-16 Online:2009-12-26 Published:2009-12-26
  • Contact: Wei Wu

摘要: 用自制的以有机蒙脱土(OMMT)为核、聚苯乙烯为次外层、聚丙烯酰胺为外层的新型聚(苯乙烯-丙烯酰胺)/OMMT核壳结构,通过熔融共混法制备了含3 %(质量分数,下同)核壳结构的改性聚酰胺6(PA6)。研究了改性PA6的力学性能、加工流动性能、结晶性能和热稳定性能。结果表明,核壳结构改性PA6能明显提高材料的弯曲性能,其弯曲强度较纯PA6提高了1.44 %,弯曲模量提高了3.46 %;核壳结构对PA6的结晶有成核作用,材料的结晶温度提高了8.5 oC,结晶度提高了3.3 %;核壳结构改性PA6与纯PA6具有基本一致的热稳定行为;核壳结构还能有效提高PA6的加工流动性,其熔体流动速率是纯PA6的2.18倍。

关键词: 有机蒙脱土, 丙烯酰胺, 核壳结构, 改性尼龙6

Abstract: Polystyrene/polyacrylamide/organic montmorillonite core-shell particles were synthesized through emulsion polymerization and used to modify polyamide 6, their influence on mechanical properties, processability, crystallization behavior, and thermal stability of PA6 composites was investigated. By the inclusion of the core-shell particles, the flexile strength and modulus were increased by 1.44 and 3.46%, respectively, based on neat PA6. The core-shell particles acted as nucleating agent, which increased the crystallization temperature of PA6by 8.5 oC and the degree of crystallinity by 3.3 %. The PA6 composites also showed a good thermal stability and processability, the melt flow rate was increased by 118 %.

Key words: organic montmorillonite, acrylamide, core–shell structure, Modified PA6

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