含氟硅油改性聚氨酯的结构与应用性能  

Structure and Application Performance of Polyurethane Modified by Fluorinated Polysiloxane

作　　者：雷海波[1,2] 罗运军 王胜鹏[3] 李卓昕[4] 王宝义[4] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081 [2]潍坊市产品质量监督检验所,山东潍坊261031 [3]浙江传化股份有限公司,杭州311215 [4]中国科学院高能物理研究所核分析技术重点实验室,北京100049

出　　处：《材料工程》2012年第10期25-29,共5页Journal of Materials Engineering

摘　　要：为了研究水性含氟硅油改性聚氨酯(WFSPU)的结构与应用性能之间的关系,用动态力学分析仪、正电子湮灭寿命谱及X射线光电子能谱仪分别测试了WFSPU膜的微相分离特征、自由体积及膜表面元素组成;采用织物强力仪、抗渗水性测定仪、织物透湿量测定仪、接触角测定仪、折皱回复角测定仪等测试了涂层织物的黏结强度、静水压、透湿量、接触角、折皱回复角等应用性能。研究结果表明:用含氟硅油(AFS)改性聚氨酯,聚氨酯膜具有微相分离结构,聚氨酯膜的自由体积空洞半径和自由体积分数均增大,F,Si元素向膜表面迁移;随AFS含量的增加,涂层织物的透湿性量呈先增后降趋势,静水压逐渐降低,涂层织物的拒水性提高,回弹性呈先增后降趋势,综合考虑,AFS质量分数为6%时,WFSPU的性能较好。In order to study the relationship between the structure and application performance of water-borne polyurethane modified by fluorinated polysiloxane（WFSPU）,the phase separation characteristic,free volume hole size and surface elements of WFSPU film were investigated by dynamic mechanical analyzer,positron annihilating life spectrometer and X-ray photoelectron spectroscopy instrument respectively.The application performance of coated fabric including cohesive strength,moisture permeability,water repellency and elasticity were tested by using fabric strength tester,water resistance tester for fabric,water vapor permeability tester,contact angle meter and crease recovery angle tester.The results show that,compared with unmodified polyurethane,the microphase separation degree of modified polyurethane improved,size and percentage of free volume hole of polyurethane film increased,and some F,Si element migrated to film surface;as the AFS content increasing,The cohesive force between coating and fabric increased gradually,the moisture breathability of coated fabric increased first and then decreased,the hydrostatic pressure decreased gradually,the water repellency of coated fabric increased gradually,and the elasticity increased first and then decreased.In all,the performance of WFSPU was best when the mass fraction of AFS was 6%m

关 键 词：水性聚氨酯 氟硅改性 织物涂层 

分 类 号：TQ314.2[化学工程—高聚物工业]