原位溶胶-凝胶法制备光固化3D打印大豆油基杂化材料及其性能分析
Preparation of light-curing soybean oil-based hybrid materials for 3D printing by in situ sol-gel method and analysis of their properties
曹力铸 1李少辉 1刘晓暄 2崔艳艳1
作者信息
- 1. 广东工业大学材料与能源学院,广东省功能软凝聚态物质重点实验室,广东 广州 510006
- 2. 广东工业大学材料与能源学院,广东省功能软凝聚态物质重点实验室,广东 广州 510006;化学与精细化工广东省实验室揭阳分中心,广东 揭阳 522000
- 折叠
摘要
以 2.7 官能度大豆油多元醇(SBOP)与甲基丙烯酸乙酯二异氰酸酯(MOI)为原料,成功制备了 2.7 官能度可自由基光固化的大豆油基光敏树脂SBO-2.7A.将SBO-2.7A作为基体树脂,通过添加一定比例活性稀释剂丙烯酸羟乙酯(HEA),制备出了 3D打印大豆油基光敏树脂.通过原位溶胶-凝胶法,将不同正硅酸乙酯(TEOS)添加量的大豆油基打印树脂配方进行3D打印成型,优选出最佳的酸性蒸汽后处理条件后,最终制备出具有机械性能提高的打印大豆油基材料.通过红外光谱仪、电子显微镜、哈克旋转流变仪、拉伸试验机等对 3D打印树脂的黏度、光固化行为及其对 3D打印样品的热力学性能、机械性能等的影响进行分析,结果表明,原位溶胶-凝胶法生成纳米SiO2 使得3D打印制品拉伸性能、储能模量均得到提高,其中拉伸强度由起始的 9.96 MPa增加到了14.14 MPa,提高了 42%;储能模量由 293 MPa提高至567 MPa,提高了93.5%.
Abstract
SBO-2.7A,a 2.7-functional free radical light-curing soybean oil-based photosensitive resin,is successfully prepared from 2.7-functional soybean oil polyol(SBOP)and ethyl methacrylate diisocyanate(MOI).As a matrix resin,SBO-2.7A is then mixed with a certain proportion of HEA reactive diluent to prepare soybean oil-based photosensitive resin for 3D printing purpose.Soybean oil-based printing resin formulations with varying TEOS dosages are 3D printed and molded through in situ sol-gel method.After selecting the optimal acidic steam post-treatment conditions,the soybean oil-based materials with improved mechanical properties are printed.The viscosity and light-curing behavior of the resin,as well as the thermomechanical and mechanical properties of the printed samples are analyzed through FT-IR,SEM,Hacker rotational rheometer,and tensile testing.Results indicate that the in situ sol-gel method leads to the generation of nano-SiO2,which improves the tensile properties and energy storage modulus of the 3D printed products.The tensile strength increases by 42%,from 9.96 MPa to 14.14 MPa.Similarly,the energy storage modulus increases by 93.5%,from 293 MPa to 567 MPa.
关键词
大豆油基光敏树脂/3D打印/原位溶胶-凝胶法/大豆油基杂化材料/纳米二氧化硅Key words
soybean oil-based photosensitive resin/3D printing/in situ sol-gel/soybean oil-based hybrid material/nano silicon dioxide引用本文复制引用
基金项目
揭阳市(扬帆计划)引进创新创业团队和领军人才项目(CXTD2021001)
出版年
2024
NETL
NSTL
万方数据