含水滑石阻燃涂层整理剂的应用及其作用机制  

Application and mechanism of hydrotalcite flame retardant agent

作　　者：陈慧芬[1] 郑今欢[1,2] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018 [2]浙江理工大学生态染整技术教育部工程研究中心,浙江杭州310018

出　　处：《纺织学报》2014年第11期107-111,117,共6页Journal of Textile Research

基　　金：浙江省重点科技创新团队计划资助项目(2010R50038)

摘　　要：将水滑石与水性PU涂层胶复配,制成阻燃功能涂层整理剂并应用于涤纶织物,应用发现水滑石的添加赋予了织物较好的阻燃性能,改善了其防水透湿性能。通过对涂层织物的性能分析,对所用的水滑石进行XRD分析、FT-IR表征及涂层织物的TG、SEM等分析,探讨了水滑石阻燃作用机制及其改善涂层织物透湿性能的原因。结果表明:水滑石阻燃涂层织物在燃烧过程中,水滑石会较织物先受热分解,一方面,通过吸热来降低涂层织物表面的温度,表现出吸热作用和气相阻燃的特性;另一方面,水滑石受热分解后在涤纶织物表面形成保护膜,表现出凝聚相阻燃的特点。由于水滑石中含有大量亲水基团,能通过亲水传递来提高涂层涤纶织物的透湿性能。The hydrotalcite-PU flame retardant agent was prepared by compound hydrotalcite into waterborne PU,and then applied on polyester fabrics.The mechanism of flame retardant and moisture permeability were studied by characterizing hydrotalcite structures by X-ray diffraction（XRD） and infrared spectroscopy（FT-IR）,and the coated fabric by thermogravimetry（TG） and scanning electron microscopy（SEM）.The results show that the combustion of coated fabric is retarded because hydrotalcite plays a multi-role of endothermic cooling,then diluting gas phase,and finally forming heat insulation layer on the fabric surface during the burning process.The moisture permeability is improved resulted from the hydrophilic group in hydrotalcite.

关 键 词：水滑石 水性PU涂层胶 阻燃机制 透湿机制 

分 类 号：TS195.2[轻工技术与工程—纺织化学与染整工程]