聚甲醛阻燃的研究  

A STUDY ON FLAME-RETARDANT POLYOXYMETHYLENE

作　　者：刘鹏波[1] 徐闻[1] 李英杰[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2004年第6期120-123,共4页Polymer Materials Science & Engineering

基　　金：国家863计划项目(2002AA333070);云南省省院省校科技合作项目(2002ZABDA00A015)

摘　　要：选用氢氧化镁(Mg(OH)2)、聚磷酸铵(APP)作为聚甲醛(POM)的阻燃剂,研究了它们对POM阻燃效果及力学性能的影响。结果表明,加入Mg(OH)2阻燃剂后,POM的阻燃性能有较大的提高,当Mg(OH)2的加入量为60%时,极限氧指数由15提高到40,水平燃烧速度由0.33mm/s降至0.31mm/s。APP阻燃POM的效果优于Mg(OH)2,在APP加入量达到25%时即制得自熄的POM。两种阻燃剂的加入都使POM的力学性能下降。The flame retardancy and mechanical properties of Polyoxymethylene (POM) blended with Mg(OH)_2 and APP were studied in this paper. The experimental results show that the flame retardancy of POM/Mg(OH)_2 blend is improved with the increase of Mg(OH)_2 content. Compared with POM, The limiting oxygen index (LOI) of POM/Mg(OH)_2 (40/60) is increased from 15 to 40, and the horizontal burning rate of the blend decreased from 0.33 mm/s to (0.31) mm/s. After blended with APP, the flame retardancy of POM is also improved. The LOI of POM/APP (75/25) is increased to 25. During the horizontal burning experiment, the specimen doesn't burn when the flame ignition source is removed.

关 键 词：聚甲醛 氢氧化镁 聚磷酸铵 阻燃 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]