中国塑料 ›› 2025, Vol. 39 ›› Issue (4): 37-40.DOI: 10.19491/j.issn.1001-9278.2025.04.007

• 材料与性能 • 上一篇    下一篇

阻燃增强PBT的灼热丝性能研究

沈彬(), 刘志刚, 李二响   

  1. 南通开普乐工程塑料有限公司,江苏 南通 226300
  • 收稿日期:2024-05-24 出版日期:2025-04-26 发布日期:2025-04-23
  • 作者简介:沈彬(1986-),从事塑料改性工作,178450569@qq.com

Study on glow⁃wire ignition performance of flame⁃retardant reinforced PBT

SHEN Bin(), LIU Zhigang, LI Erxiang   

  1. Nan Tong Kepoly Engineering Plastics Co,Ltd,Nantong 226300,China
  • Received:2024-05-24 Online:2025-04-26 Published:2025-04-23

摘要:

通过卤素阻燃剂与磷系、氮系、磷氮系阻燃剂的多元复配,对阻燃增强聚对苯二甲酸丁二醇酯(PBT)的灼热丝性能进行研究。采用溴化聚苯乙烯、三氧化二锑、二乙基次磷酸铝(ADP)、三聚氰胺氰尿酸盐(MCA)、三聚氰胺聚磷酸盐(MPP)、成碳型复合无卤阻燃剂(KCP)等阻燃剂体系进行复配实验。结果表明,单一的卤素或者无卤阻燃剂体系的增强PBT材料无法满足IEC60335⁃1关于无人看管电器载流部件的灼热丝性能指标要求,通过不同类型阻燃剂复配,利用溴⁃氮⁃磷协同阻燃,最终可以实现最高同时满足GWIT>825 ℃、GWFI>960 ℃、UL 94 V⁃0的PBT增强材料。

关键词: 聚对苯二甲酸丁二醇酯, 阻燃, 高灼热丝, 起燃温度, 增强

Abstract:

In this study, flame⁃retardant reinforced PBT compounds were prepared through a multi⁃component combination of halogen flame retardants with phosphorus, nitrogen, and phosphorus⁃nitrogen⁃based flame retardants, and their glow⁃wire ignition temperature (GWIT) was investigated. Brominated polystyrene, antimony trioxide, diethylaluminum hypophosphate, melamine cyanurate, melamine polyphosphate, and carbon⁃based composite halogen⁃free flame retardant were used as flame retardants to compound with the reinforced PBT for flame⁃retardant experiments. The enhanced PBT compound only with halogen flame retardant or with halogen⁃free flame⁃retardant system cannot meet the requirements of IEC60335⁃1 for the GWIT of current carrying components in unmanned electrical appliances. By a combination of different types of flame retardants and the use of bromine⁃nitrogen⁃phosphorus synergistic flame retardant, the enhanced PBT could ultimately achieve the best flame⁃retardant performance and simultaneously meet the requirements of flame⁃retardant standard at GWIT>825 ℃, GWFI>960 ℃, and UL 94 V⁃0.

Key words: polybutylene terephthalate, flame retardant, high glow-wire ignition temperature, ignition temperature, reinforcement

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