含磷聚硅氧烷阻燃涂层的制备及性能研究
Preparation and performance study of phosphorus-containing polysiloxane flame-retardant coating
曾晓亮 1兰新生 1何双梅 2郭德明 2王燕 1赵海波2
作者信息
- 1. 国网四川省电力公司电力科学研究院,成都 610041
- 2. 四川大学化学学院 环保型高分子材料国家地方联合工程实验室 教育部环境与火安全高分子材料协同创新中心 环境友好高分子材料教育部工程研究中心,成都 610064
- 折叠
摘要
在本文中,我们采用亚磷酸二苯酯(DP)和乙烯基三乙氧基硅烷(VTEO)制备了含磷聚硅氧烷阻燃涂层,通过溶胶-凝胶法将其施加于基材表面.阻燃涂层处理后的基材外观和颜色未发生明显变化,且极限氧指数可达27.0%,在垂直燃烧测试中可实现自熄,损毁长度仅为76 mm.阻燃机理研究表明,含磷聚硅氧烷阻燃涂层一方面可以催化基材脱水炭化,形成更为致密的稳定交联炭层;另一方面可降低可燃气体的释放量,同时发挥凝聚相阻燃和气相阻燃作用,提升基材在使用过程中的火安全性能.
Abstract
In this study,diphenyl phosphite(DP)and vinyltriethoxysilane(VTEO)are employed to craft a phosphorus-containing polysiloxane flame retardant coating,and further imposed to cotton fabric by the sol-gel method.The treated not only substrate maintains its original appearance and color,but also exhibits self-extinguishing behavior with a low damage length(76 mm)after ignition as well as a high limiting oxygen in-dex(27.0%).The mechanism research reveals the flame-retardant role in both the condensed phase and the gas phase.On the one hand,the coating promotes the dehydration and carbonization of substrate and further forms a dense,stable cross-linked char layer.Additionally,it also reduces the release of combustible gases dur-ing the burning processes.Thus,the fire safety performance of substrates is achieved in practical use.
关键词
阻燃/聚硅氧烷/溶胶-凝胶Key words
Flame retardancy/Polysiloxane/Sol-gel引用本文复制引用
基金项目
国网四川省电力公司科技项目(52199723000M)
出版年
2024
国家科技期刊平台
NSTL
万方数据