单宁酸基阻燃多功能涂层及表面整理Lyocell织物  

Tannic acid-based flame retardant multifunctional coating for surface finishing Lyocell fabrics

作　　者：黄田田 宋媛珠 赵斌 HUANG Tiantian;SONG Yuanzhu;ZHAO Bin(Institute of Functional Textiles and Advanced Materials,Qingdao University,Qingdao,Shandong 266071,China;College of Textiles&Clothing,Qingdao University,Qingdao,Shandong 266071,China)

机构地区：[1]青岛大学功能纺织品与先进材料研究院,山东青岛266071 [2]青岛大学纺织服装学院,山东青岛266071

出　　处：《纺织学报》2024年第12期152-158,共7页Journal of Textile Research

基　　金：国家自然科学基金面上项目(21975226);省部共建生物多糖纤维成形与生态纺织国家重点实验室科研启动项目(GZRC202017)。

摘　　要：为提高Lyocell织物的功能性,基于氢键作用在Lyocell织物表面原位构建单宁酸(TA)/六(1,2,4-三氮唑-3-胺基)环三磷腈(HATA)阻燃抗菌涂层,并引入乙烯基三乙氧基硅烷赋予织物疏水性。经涂层整理后的Lyocell织物极限氧指数由19.0%提高到了29.4%,在垂直燃烧测试中表现出离火自熄,残炭长度仅为5.5 cm,在微型量热测试中,最大热释放速率显著降低了74.8%。研究结果表明:TA/HATA涂层的构建有效促进了Lyocell织物高温成炭;阻燃织物具有良好的抗菌性能、疏水性和抗紫外线性能,对金黄色葡萄球菌和大肠杆菌的抑菌率分别为99.99%和99.88%,水接触角可达116°,UPF值可达64.04;涂层对织物力学性能影响不大,对白度影响较大。Objective Lyocell fibers belong to regenerated cellulose fiber family with excellent comfort,breathability and biodegradability,which is widely used in clothing,bedding,furniture and other fields.However,the limiting oxygen index(LOI)of lyocell fiber is only 19%,indicating high flammability with a great threat to people′s life and property safety.In addition,the hygroscopicity of lyocell fabrics provides suitable conditions for the propagation of microorganisms,which adversely influences human health.Therefore,the flame retardant and antibacterial modification for Lyocell fabrics is worthy of attention.Method Aminoazole-based cyclotriphosphazene(HATA)is rich in phosphorus and nitrogen,which can achieve efficient flame retardant for fabrics.Besides,tannic acid(TA)belongs to biomass,which has a wide range of sources.Glycidyl trimethyl ammonium chloride(GTA)was utilized to improve the loading of tannic acid on the fabric,amnd triethoxyvinylsilane(VTEO)was selected to endow the fabric hydrophobicity.A multifunctional lyocell fabric was prepared by the dip-drying method,and the flame retardant,UV resistance,hydrophobicity and antibacterial properties were investigated by vertical flame tests(VFT),limiting oxygen index(LOI)evaluation,microscale combustion calorimetry(MCC),anti-UV performance test,contact angle test,and oscillating method of antimicrobial test.Results In this study,control lyocell was burned out with little char residue during the VFT.However,treated Lyocell passed VFT with self-extinguish behavior and the char residue was only 5.5 cm.Besides,treated Lyocell after 5 laundering failed to pass VFT,but remained a little char residue.Compared with the control lyocell,the LOI value of treated Lyocell increased from 19.0%to 29.4%.MCC test showed that the peak heat release(PHRR)and total heat release(THR)of treated Lyocell decreased 74.9%and 65%,respectively.Moreover,TG resulted that the introduction of the coating reduced the maximum decomposition rate(R max)and the temperature at the maximum decomposition

关 键 词：LYOCELL织物 功能整理 阻燃 抗菌 疏水 抗紫外线 功能性纺织品 

分 类 号：TS102[轻工技术与工程—纺织工程]