生物质化学工程2025，Vol.59Issue(6)：47-53,7.DOI:10.3969/j.issn.1673-5854.2025.06.006
环氧化木质素交联剂的制备及其对丙烯酸树脂性能的影响
Preparation of Epoxidized Lignin Crosslinking Agent and Its Effect on the Properties of Acrylic Resin
摘要
Abstract
In order to improve reactivity and utilization efficiency of lignin,epoxidized lignin(EPL)was prepared by chemical modification of pre-hydrolyzed lignin(PL).And its effect as a crosslinking agent on the mechanical properties of acrylic resin and the interfacial bonding strength in adhesive application were investigated.The results showed that EPL exhibited excellent interfacial compatibility with acrylic resin.The acrylic resin(HLEPL1)with 1％EPL crosslinking agent exhibited good mechanical properties.The tensile strength,tensile strain and toughness of the adhesive were 3.0 MPa,732.1％and 10.7 kJ/m3,respectively,which were 87.5％,41.3％and 167.5％higher than those of the acrylic resin without lignin(HLEPL0).In addition,due to the poor compatibility between lignin and acrylic resin,the mechanical properties of acrylic resin with unmodified lignin decreased significantly,with tensile strength,tensile strain,and toughness measuring were 0.3 MPa,108.8％,and 0.2 kJ/m3,respectively.In the application of adhesive,wood panels were bonded through hot pressing.The shear stress and bonding strength of HLEPL0 were 630.0 N and 4.2 MPa,respectively,while those of HLEPL1 increased to 1 116.2 N and 7.4 MPa,respectively.Moreover,its bonding strength remained at 90.9％after 5 cycles.关键词
木质素改性/木质纤维/力学性能/丙烯酸树脂/胶黏剂Key words
lignin modification/wood fiber/mechanical property/acrylic resin/adhesive分类
化学化工引用本文复制引用
邹双琳,史晓华,王蕊,肖领平,孙润仓..环氧化木质素交联剂的制备及其对丙烯酸树脂性能的影响[J].生物质化学工程,2025,59(6):47-53,7.基金项目
国家自然科学基金资助项目(22278049,U24A20559) （22278049,U24A20559）
大连市科技人才创新项目(2024RJ017) （2024RJ017）
