摘要
研究了在共聚甲醛中加入Ａｌ（ＯＨ）３或Ｍｇ（ＯＨ）２后，产物的阻燃性及力学性能。结果表明：Ａｌ（ＯＨ）３加入量占共聚甲醛的６０％时，产物完全不燃；Ｍｇ（ＯＨ）２的阻燃效果则较差。将Ａｌ（ＯＨ）３用铝偶联剂预处理后再与共聚甲醛共混，能明显改善共混产品的拉伸强度及缺口冲击强度，而不影响其阻燃性。加入硬脂酸锌可明显改进其流动性。二者并用可明显增加共混材料的强度及流动性。
Flame retardancy and mechanical properties of acetal copolymer blended withAl(OH)3 or Mg(OH)2 were studied. The results indicated that the acetal copolymer containing 60% Al(OH)3 wasn't combustible. Flame retardancy of Mg(OH)2 was inferior to that of Al(OH)3. When Al(OH)3 was pretreated with aluminum coupling agent, the notch impact strength and tensile strength of blend would be improved and their flame retardancy would be not influenced by pretreatment. When pretreated Al(OH)3 and zinc stearate were added to the blend, a synergistic effect with respect to strength and flow would be observed.
出处
《石化技术与应用》
CAS
1999年第2期79-81,99,共4页
Petrochemical Technology & Application
关键词
工程塑料
聚甲醛
阻燃剂
AL(OH)3
偶联剂
阻燃性
engineering plastics
acetal copolymer
flame retardant
aluminum hydroxide
coupling agent
