氢氧化镁/碳微球复合阻燃剂对PET结构和性能的影响  

Effect of Mg(OH)_2/ Carbon Microspheres Composite Flame-retardant on the Structure and Property of PET

作　　者：张莹[1] 牛梅[1,2] 薛宝霞[1] 杨雅茹[1] 李京京[1] 戴晋明[1,2] 

机构地区：[1]太原理工大学轻纺工程学院,山西榆次030600 [2]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024

出　　处：《塑料工业》2015年第4期102-105,109,共5页China Plastics Industry

基　　金：国家自然科学(青年)基金(51302183);山西省自然科学(青年)基金(2012021021-6);山西省回国留学人员科研基金(2012L027);太原理工大学青年基金资助项目(2012-044)

摘　　要：利用双螺杆挤出机制备了氢氧化镁[Mg(OH)2]/碳微球(CMS)/聚对苯二甲酸乙二醇酯(PET)复合材料,通过场发射扫描电镜、热重法、差示扫描量热仪、数显氧指数测试仪和水平垂直燃烧仪等手段对Mg(OH)2/CMS/PET复合材料的微观形貌、热性能及阻燃性能进行表征。结果表明,Mg(OH)2/CMS复合阻燃剂较好地分散在PET基体上;Mg(OH)2/CMS复合阻燃剂提高了材料的热稳定性,有效地利用Mg(OH)2和CMS的协同作用,促进材料形成炭层起到隔热隔氧的作用,使得材料的极限氧指数提高了39%,熔滴降低了65%,提高了材料的阻燃性能。Magnesium hydroxide [ Mg （ OH ）2 ] /carbon microspheres （ CMSs ）/polyethylene terephthalate （PET） composites were prepared by using twin-screw extruder. Scanning electron microscope, thermogravimetry, differential scanning calorimetry, limiting oxygen index and horizontal vertical burning tester were used to characterize the microstructure, thermal and flame-retardant property of Mg（OH） 2/CMSs/ PET composites. The results showed that the compatibility between Mg （OH）i/CMSs compositeflame- retardant and PET matrix was better; the thermal stability of Mg （OH）2/CMSs compositeflame-retardant enhanced, making full use of synergistic effect between Mg （OH）2 and CMSs, boosting to form the carbon layer which had the effect of heat and oxygen insulation; finally the limiting oxygen index of PET was increased by 39%, and the droplet was reduced by 65%, improving the flame-retardant property of PET.

关 键 词：氢氧化镁 碳微球 聚对苯二甲酸乙二醇酯 复合阻燃剂 热稳定性 炭层 阻燃性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TQ314.24