云南化工2023，Vol.50Issue(z1)：34-37,4.DOI:10.3969/j.issn.1004-275X.2023.Supp.09
酚醛物质的量比对木质素酚醛树脂物化性质的影响
The Influence of Phenolic Content Ratio on the Physicochemical Properties of Lignin Phenolic Resin
摘要
Abstract
Lignin is a biomass with a special structure of phenylpropane and abundant reserves.Due to its phenolic hydroxyl groups,it can be used as a substitute for phenolic compounds.In this study,lignin was used as a raw material to replace phenol in the synthesis of thermoplastic lignin phenol-formaldehyde resin.In order to discuss the effect of the molar ratio of phenol to formaldehyde on resin synthesis,the ratio of phe-nol to formaldehyde was set at1∶0.8,1∶0.7,and1∶0.6 for synthesis experiments,and phenolic resin was prepared.The material properties were characterized using FTIR,TG,DSC and other methods,and the properties of thermoplastic phenolic resins with different molar ratios of substances were studied.The lignin thermoplastic based phenolic resin prepared with a phenol formaldehyde ratio of 1∶0.7 has a higher ordered arrangement and higher thermal curing temperature.And it has excellent thermal stability,with the highest melting temperature and residual carbon rate.Meanwhile,through FTIR dataanalysis,it can be concluded that the prepared resin has a relatively high ortho site ratio.Therefore,a resin sample with a molar ratio of 1∶0.7 of phenolic substances was selected as the spinning precursor.关键词
木质素/高邻位/酚醛树脂Key words
lignin/high-ortho/phenolic resin分类
化学化工引用本文复制引用
张晓旭,孔林枫,李欣,任宇,刘灿,赵平..酚醛物质的量比对木质素酚醛树脂物化性质的影响[J].云南化工,2023,50(z1):34-37,4.基金项目
云南省基础研究专项面上项目 202101AT070041 （）
云南省教育厅科学研究基金项目2023Y0691. （）
