期刊文献+

协同交联型大豆胶黏剂的流变与固化性能研究

Rheological Behaviors and Curing Properties of Synergistic Cross-linked Soybean Based Adhesives
在线阅读 下载PDF
收藏 分享 导出
摘要 利用饲料级大豆粉为原料,通过水性聚酰胺和异氰酸酯对其进行协同复合改性制备出具有良好流变行为和固化性能的大豆胶黏剂。采用旋转流变仪研究了复合改性剂用量对大豆胶黏剂流变行为和固化性能的影响,结果表明:改性后的大豆胶黏剂属于假塑性流体,当水性聚酰胺添加量为10%时,所得大豆胶黏剂的流变性能较优,而异氰酸酯添加量对大豆胶黏剂的流变行为几乎没有影响;运用动态温度扫描模式研究大豆胶黏剂的黏弹性能,异氰酸酯添加量对大豆胶黏剂的储能模量和损耗模量影响较大。水性聚酰胺/异氰酸酯协同交联体系可与大豆蛋白分子间发生交联,当10%水性聚酰胺和4%异氰酸酯协同改性时,所得胶合板的胶合强度可达0.74 MPa,满足国家Ⅱ类胶合板使用要求(≥0.70 MPa)。 Soybean-based adhesives with good rheological behaviors and curing properties were made of soybean flour by synergistic modification of aqueous polyamide and isocyanate.The effect of various modifiers on the rheological behaviors was investigated by using rotational rheometer.The results showed that the soy-based adhesives were pseudoplastic fluid,and the rheological behavior was better when 10%aqueous polyamide was added,but the isocyanate cross-linking agent had no influence on the rheological behavior of these adhesives at room temperature.Through the dynamic temperature scan mode of the rheometer test,it was found that the amount of isocyanate had great influence on the storage modulus and loss modulus of soybean adhesive.The bonding strength was 0.74 MPa and meeting the national board II requirements(≥0.70 MPa)when 10%aqueous polyamide and 4%isocyanate were added simultaneously,which indicated that the cross-linking reaction happened between the aqueous polyamide/isocyanate synergistic cross-linking system and soy protein molecules.
作者 王广彬 王利军 陈家宝 李玲 王春鹏 储富祥 许玉芝 WANG Guangbin;WANG Lijun;CHEN Jiabao;LI Ling;WANG Chunpeng;CHU Fuxiang;XU Yuzhi(Institute of Chemical Industry of Forest Products,CAF,National Engineering Lab.for Biomass Chemical Utilization,Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,Key Lab.of Biomass Energy and Material,Jiangsu Province,Nanjing 210042,China;Research Institute of Forestry New Technology,CAF,Beijing 100091,China;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China)
出处 《生物质化学工程》 CAS 北大核心 2019年第5期9-14,共6页 Biomass Chemical Engineering
基金 国家重点研发计划资助项目(2016YFD0600705) 木竹产业技术创新战略联盟科研计划课题(TIAWBI201604)。
关键词 大豆胶黏剂 协同交联 流变行为 固化性能 胶合强度 soy-based adhesives synergistic cross-linking rheological behaviors curing properties bonding strength
  • 相关文献

参考文献4

二级参考文献40

共引文献30

论文智能改写系统
维普数据出版直通车
投稿分析
职称考试

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈