3D打印衣康酸/羟丙基纤维素基水凝胶及其阻燃性  

3D Printing Itaconic Acid/Hydroxypropyl Cellulose Hydrogels and Its Flame Retardancy

作　　者：俞润昊 李蓉 刘川 郝康安 黄安荣[3] 王丽雯 左晓玲 YU Runhao;LI Rong;LIU Chuan;HAO Kang′an;HUANG Anrong;WANG Liwen;ZUO Xiaoling(College of Materials Science and Engineering,Guizhou Minzu University,Guiyang 550025,China;College of Physics and Electrical Engineering,Guizhou Minzu University,Guiyang 550025,China;National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang 550025,China;Guiyang No.1 High School,Guiyang 550003,China)

机构地区：[1]贵州民族大学材料科学与工程学院,贵州贵阳550025 [2]贵州民族大学机械与电子工程学院,贵州贵阳550025 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [4]贵阳市第一中学,贵州贵阳550003

出　　处：《塑料工业》2024年第12期160-167,共8页China Plastics Industry

基　　金：国家自然科学基金(1230041576);贵州省科学技术基金(黔科合基础ZK﹝2022﹞重点029);4D打印智能材料科技创新人才团队(GZMUZK﹝2023﹞CXTD01)。

摘　　要：基于天然高分子聚合物的水凝胶阻燃材料,由于其在阻燃性及环境兼容性方面的卓越特性,正逐渐成为科学研究的热点。本研究以改性衣康酸(EP)与改性羟丙基纤维素(HPCS)作为初始原料,采用可见光固化3D打印技术,制备了一种具有优异热稳定性和阻燃性的天然高分子水凝胶(EP/HPCS水凝胶)。结果表明,该水凝胶表现出优异的保水性能,在长时间空气暴露下仍能保持较高含量的水分。热失重分析显示,EP/HPCS水凝胶具有良好的高温热稳定性,并且残炭量可达3.445%。EP/HPCS水凝胶具有优异的阻燃性,极限氧指数为63.3%,垂直燃烧测试显示其具有自熄性。此外,该水凝胶的拉伸强度可达到113.34 kPa。这种同时具备高温热稳定性、良好力学性能及阻燃性的水凝胶材料,为可用于织物热防护、煤矿保护等领域的新一代无卤阻燃材料的绿色开发提供了新思路。Hydrogel flame retardant materials based on natural polymer macromolecules are increasingly becoming a focus of scientific research due to their outstanding flame retardancy and environmental compatibility.In this study,modified itaconic acid(EP)and modified hydroxypropyl cellulose(HPCS)were used as the initial precursors to fabricate a kind of natural polymer hydrogel(EP/HPCS hydrogel)with excellent thermal stability and flame retardancy through the visible light-curable 3D printing technology.The results demonstrate that the hydrogel shows excellent water retention properties and could retain a high moisture content even after a long time of air exposure.Thermogravimetric analysis reveals that the EP/HPCS hydrogel possesses good high-temperature thermal stability,with a char residue of up to 3.445%.This hydrogel exhibits excellent flame retardancy,with a limiting oxygen index(LOI)value of 63.3%.The vertical combustion test shows that this hydrogel also has self-extinguishing properties.Furthermore,the tensile strength of the hydrogel could reach 113.34 kPa.This hydrogel material combines high-temperature thermal stability,good mechanical properties,and flame retardancy,providing a new approach for the green development of a new generation of halogen-free flame retardant materials that are applied in the fields such as fabric thermal protection and coal mine safety.

关 键 词：天然高分子材料 水凝胶 3D打印 阻燃性 可见光固化 衣康酸 羟丙基纤维素 

分 类 号：TQ321.2[化学工程—合成树脂塑料工业]