阻燃腈纶/芳纶包芯纱的制备及其紫外光稳定性  

Preparation and UV stability of flame-retardant acrylic/aramid core-spun yarns

作　　者：吴俊雄 尉霞 罗璟娴[1] 闫姣儒 吴磊 WU Junxiong;WEI Xia;LUO Jingxian;YAN Jiaoru;WU Lei(School of Textile Science and Engineering,Xi′an Polytechnic University,Xi′an,Shaanxi 710048,China;Key Laboratory of Functional Textile Material and Product,Xi′an Polytechnic University,Ministry of Education,Xi′an,Shaanxi 710048,China)

机构地区：[1]西安工程大学纺织科学与工程学院,陕西西安710048 [2]西安工程大学、功能性纺织材料及制品教育部重点实验室,陕西西安710048

出　　处：《纺织学报》2023年第3期60-66,共7页Journal of Textile Research

基　　金：陕西省重点研发计划项目(2022GY-362)。

摘　　要：针对芳纶紫外光稳定性差易发生光降解老化的问题,制备外包阻燃腈纶、芳纶为芯纱的包芯纱,用来阻断紫外线对芳纶的直接照射。设计芳纶/芳纶、阻燃腈纶/芳纶、腈氯纶/芳纶、阻燃腈纶/阻燃粘胶/芳纶、阻燃腈纶/阻燃莫代尔/芳纶5种包芯纱,并以包芯纱为纬纱,芳纶为经纱织造织物,测试织物的紫外光老化性、舒适性及阻燃性。结果表明:与纯芳纶织物相比,阻燃腈纶/芳纶、阻燃腈纶/阻燃粘胶/芳纶、阻燃腈纶/阻燃莫代尔/芳纶3种织物的紫外线防护系数分别提高25.8%、18.7%、20.8%,断裂强力分别下降23.1%、37.9%、27.0%,续燃时间分别延长0.9、0.2、0.2 s,阴燃时间分别延长0.3、0.4、0.7 s;老化前后纯芳纶、阻燃腈纶/芳纶、阻燃腈纶/阻燃粘胶/芳纶、阻燃腈纶/阻燃莫代尔/芳纶4种织物断裂强力分别下降43.6%、5.9%、8.3%、9.1%;阻燃腈纶/芳纶织物的舒适性能下降,但阻燃腈纶/阻燃粘胶/芳纶织物的舒适性有所提高;阻燃腈纶/阻燃粘胶/芳纶包芯纱的综合性能最佳,具有良好的紫外光稳定性、舒适性及阻燃性。Objective Aramid fiber has become the most widely used high performance fiber for protective fabrics because of its good flame retardancy and chemical stability.But,due to the penetration of the molecular chain contains a lot of chromogenic groups,it is prone to aging degradation under high-energy rays,especially UV light,and the UV aging performance seriously affected usability of the aramid products used outdoors.Therefore,it is necessary to study how to improve the UV aging resistance of aramid fiber in fabrics.Method Aiming at the problem of poor UV light stability and easy photodegradation and aging of aramid,the core-spun yarn structure was adopted to block the direct UV irradiation of aramid by covering the aramid core with flame-retardant acrylic fibers.Five core-spun yarns were designed,including aramid/aramid,flame-retardant acrylic/aramid,modacrylic/aramid,flame-retardant acrylic/flame-retardant viscose/aramid and flame-retardant acrylic/flame-retardant Modal/aramid.The core-spun yarns were used as weft and aramid as warp to weave fabrics,and the UV aging,comfort and flame retardant properties were tested.Results Compared with pure aramid fabric,the UV protection coefficient of flame-retardant acrylic/aramid fabric,flame-retardant acrylic/flame-retardant viscose/aramid fabric and flame-retardant acrylic/flame-retardant Modal/aramid fabric increased by 25.8%,18.7%and 20.8%,respectively(Fig.4),while the fracture strength decreased by 23.1%,37.9%and 27.0%,respectively(Fig.1).The continuous combustion time was prolonged by 0.9 s,0.2 s and 0.2 s respectively,and the smoldering time was prolonged by 0.3 s,0.4 s and 0.7 s respectively.The fracture strengths of pure aramid yarn,flame-retardant acrylic/aramid yarn,flame-retardant acrylic/flame-retardant viscose/aramid yarn and flame-retardant acrylic/flame-retardant Modal/aramid yarn decreased by 43.6%,5.9%,8.3%and 9.1%,respectively(Fig.2).The comfort of flame-retardant acrylic/aramid fabric decreases,but the comfort of flame-retardant acrylic/flame-retardant v

关 键 词：芳纶 阻燃腈纶 包芯纱 紫外光稳定性 舒适性 阻燃性 

分 类 号：TS106.4[轻工技术与工程—纺织工程]