【作者】 张志远； 李向梅； 杨荣杰；

【Author】 ZHANG Zhiyuan,LI Xiangmei,YANG Rongjie(National Laboratory of Flame Retardant Materials,Engineering Research Center of Fire-Safe Materials and Technology,Ministry of Education,Beijing Institute of Technology,Beijing 100081)

【机构】 北京理工大学材料学院,阻燃材料研究国家专业实验室,火安全材料与技术教育部工程研究中心；

【摘要】 本文将聚磷酸铵(APP)同双季戊四醇(DPER)构成的膨胀阻燃剂(IFR)应用于丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)中,可以改善ABS的阻燃性能,并且添加蒙脱土(MMT)后阻燃效率更高。当APP/MMT纳米复合物/DPER的添加量为40wt%时,复合材料的极限氧指数为34.7%,可以达到UL94 V-0级(3.2mm)。热失重分析表明,APP及APP/MMT纳米复合物膨胀阻燃体系降低了ABS的初始分解温度,但最大分解速率也均低于ABS,同时可以提高材料在700℃时的残炭量。锥形量热仪测试结果也表明,APP及APP/MMT纳米复合物构成的膨胀阻燃体系可以显著降低ABS的热释放速率和总的热释放量,增加炭层的强度和厚度。更多还原

【Abstract】 In this paper,flame-retardant Acrylonitrile Butadiene Styrene terpolymer(ABS) were prepared with intumescent flame retardants(IFR).The IFR consisted with ammonium polyphosphate(APP) and dipentaerythritol(DPER) could improve the flame retardancy of ABS,and better with montmorillonite(MMT).With a 40wt% load of APP/MMT nanocomposite/DPER,the composite could achieve a 34.7% LOI value,and pass the UL94 V-0 rate(3.2mm).Thermal gravimetric analysis(TGA) results shows that both IFRs based on APP and APP/MMT nanocomposite decreased the onset temperature of ABS,while giving much more char at 700 ℃.Fire behaviour was tested with cone calorimeter(CONE).It was notable that IFRs could rapidly reduce the heat release rate and total heat release of ABS,and increase strength and thickness of the char layer.更多还原