摘要
以淀粉、糠醛与甲醛共缩聚合成淀粉基树脂为基质,二氧化硅颗粒为研磨材料制备新型天然可再生生物质砂轮片,分析了淀粉基树脂的主要化学结构、黏度和凝胶时间及砂轮片的微观形态和力学性能。结果表明:淀粉、糠醛与甲醛在弱酸性条件下发生了共缩聚反应,该淀粉基树脂的玻璃化转变温度较纯淀粉树脂高。用该树脂制备的砂轮片的硬度高于自制酚醛树脂砂轮片,且该生物质树脂基砂轮片的切割性能与自制酚醛树脂砂轮片相近。因此,未来用该砂轮片替代部分酚醛树脂基砂轮片是可行的。
A novel natural renewable bio-based grinding wheel has been prepared based on the co-condensation starch-based resin matrix from the corn starch,furfural and formaldehyde and the abrasive particles of silicon dioxide.The main chemical structure,viscosity and gel time of the resin matrix and the microstructure and mechanical properties of the grinding wheel were studied.The results showed that the reaction among starch,furfural and formaldehyde have been proven under weak acidic conditions,and the glass transition temperature of the matrix starch-based resin was higher than that of pure corn starch resin.Meanwhile,the hardness of the grinding wheel prepared with the bio-based resin matrix is higher than that of the grinding wheel based on the phenol-formaldehyde resin matrix prepared in laboratory.Moreover,the cutting performance of the bio-based grinding wheel is similar to that of the phenol-formaldehyde resin grinding wheel prepared in laboratory.Hence,it is feasible to replace part of phenol-formaldehyde resin based grinding wheel with this novel bio-based grinding wheel in the future.
作者
周云霞
丰尚
刘博文
李学辉
周照玲
张俊
周晓剑
杜官本
Zhou Yunxia;Feng Shang;Liu Bowen;Li Xuehui;Zhou Zhaoling;Zhang Jun;Zhou Xiaojian;Du Guanben(Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products,Southwest Forestry University,Kunming Yunnan 650233,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2023年第1期164-172,共9页
Journal of Southwest Forestry University：Natural Sciences
基金
云南省科技计划项目(202101AT070038)资助
云南省农业联合项目专项(202101BD070001-105)资助
国家自然科学基金青年基金(31800482)资助
云南省青年托举人才项目资助
云南省万人计划“青年拔尖人才”项目资助。
关键词
砂轮片
玉米淀粉
树脂
糠醛
二氧化硅颗粒
切割性能
grinding wheel
corn starch
resin
furfural
silica particle
cutting performance
