中国塑料

中国塑料 ›› 2012, Vol. 26 ›› Issue (04): 31-34 .DOI: 10.19491/j.issn.1001-9278.2012.04.006

• 材料与性能 • 上一篇    下一篇

无卤膨胀复合阻燃低密度聚乙烯/乙烯-醋酸乙烯酯共混物的研究

韦宝权 洪晓东 梁兵   

  1. 辽宁工程技术大学
  • 收稿日期:2011-12-02 修回日期:1900-01-01 出版日期:2012-04-26 发布日期:2012-04-26

Study on Non-halogen Intumescent Complex Flame Retardant for PE-LD

  

  • Received:2011-12-02 Revised:1900-01-01 Online:2012-04-26 Published:2012-04-26

摘要： 分别采用三聚氰胺氰尿酸盐（MCA）、微胶囊红磷(MCP)以及氢氧化镁[Mg(OH)2]等与膨胀型阻燃剂PNP进行复配，研究了不同阻燃剂及其配比对低密度聚乙烯/乙烯-醋酸乙烯酯（PE-LD/EVA）共混物的阻燃和力学性能的影响。结果表明，在PE-LD/EVA为70/30的基体树脂中，当复合阻燃剂的含量为35 %时，PNP/MCA的最佳配比为3/2，阻燃材料的极限氧指数为30.8 %；PNP/MCA/MCP的最佳比例为24/16/4，阻燃材料的极限氧指数为32.3 %；PNP/MCA/MCP/ Mg(OH)2的最佳比例为24/16/4/22，阻燃材料的极限氧指数为30.9 %，垂直燃烧达到UL 94 V-0级，拉伸强度为11.1 MPa，断裂伸长率为80.6 %。

关键词: 低密度聚乙烯, 乙烯-醋酸乙烯酯, 膨胀型阻燃剂, 无卤阻燃, 协同效应

Abstract: Melamine cyanurate(MCA), microcapsule red phosphorus(MCP), and magnesium hydroxide[Mg(OH)2] were compounded with an intumescent flame retardant PNP to prepare a multi-components flame retardant. The performance of the flame retardants in low-density polyethylene/ethylene-vinyl acetate (PE-LD/EVA) blends was studied. When the matrix resins of PE-LD/EVA was 70/30, the content of complex flame retardants was 35 %, the weight ratio of PNP/MCA was 3/2, limited oxygen index reached 30.8 %. When weight ratios of PNP/MCA/P =24/16/4 were used, the limited oxygen index was 32.3 %. A limited oxygen index of 30.9 % was observed at weight ratios of PNP/MCA/P/MH=24/16/4/22，the vertical combustion level reached UL 94 V-0, and the tensile strength was 11.1 MPa, the elongation at break was 80.6 %.

Key words: low-density polyethylene, ethylene-vinyl acetate, intumescent flame retardant, non-halogen flame retardancy, synergistic effect

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