聚脲/芳纶复合织物阻燃及抗穿刺性能研究
Research on the flame retardant and puncture resistant properties of polyurea/aramid composite fabrics
赵运程 1王行雨 1赵斌2
作者信息
- 1. 青岛大学 纺织服装学院 功能纺织品与先进材料研究院,山东 青岛 266071;新型防火阻燃材料开发与应用国家地方联合工程研究中心(山东),山东 青岛 266071
- 2. 青岛大学 纺织服装学院 功能纺织品与先进材料研究院,山东 青岛 266071;新型防火阻燃材料开发与应用国家地方联合工程研究中心(山东),山东 青岛 266071;天津市消防安全技术重点实验室,天津 300381
- 折叠
摘要
为提高芳纶织物的抗穿刺性能,以自制慢速反应的本征阻燃聚脲为基体对其进行涂敷整理.通过傅里叶变换红外光谱仪、核磁共振波谱仪表征了潜伏固化剂及阻燃聚脲化学结构;采用热重分析、垂直燃烧、极限氧指数、偏光显微镜、隐形车衣穿刺测试仪及万能材料试验机,研究了复合织物热稳定性、阻燃性能、微观形貌及抗穿刺性能.结果表明,聚脲/芳纶复合织物表现出易燃性,但随着本征阻燃聚脲基体中含磷多元醇比例增加,芳纶复合织物阻燃性能逐步提高,当含磷多元醇比例达到21%时,聚脲/芳纶复合织物在垂直燃烧测试中自熄,炭长仅为2.1 cm,极限氧指数达到了28.5%,达到了难燃织物的级别.同时,聚脲涂层显著提升了芳纶织物的抗穿刺性能.
Abstract
To enhance the puncture resistance of aramid fabric,a self-synthesized polyurethane with intrinsic flame-retardant prop-erties and a slow reaction rate was used as the coating matrix in the finishing treatment.The polyurea/aramid composite fabric was prepared using a coating method.The chemical structures of the latent curing agent and flame-retardant polyurea were charac-terized by Fourier Transform Infrared Spectroscopy and Nuclear Magnetic Resonance spectroscopy.The thermal stability,flame-retardant properties,microstructure,and puncture resistance of the composite fabric were analyzed using thermogravimetric analy-sis,vertical burning tests,limiting oxygen index tests,polarizing microscopy,puncture testing instruments,and a universal testing machine.The results indicated that while the aramid/polyurea fab-ric was initially flammable,its flame-retardant performance im-proved with an increasing proportion of phosphorus-containing polyols in the polyurea matrix.When the proportion of phosphorus-containing polyols reached 21%,the polyurea/ara-mid composite fabric self-extinguished in the vertical burning test,with a char length of only 2.1 cm and a limiting oxygen in-dex of 28.5%,qualifying it as a flame-retardant fabric.More-over,the polyurea coating significantly enhanced the puncture re-sistance of the aramid fabric.
关键词
聚脲/芳纶/阻燃/抗穿刺Key words
polyurea/aramid fiber/flame retardant/puncture re-sistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据