期刊论文

Preparation of Starch/Phenolic Prepolymer Copoly condensation Adhesive

Wu, Yiqiang(wuyq0506@126.com)

中文

高分子材料科学与工程

1000-7555

2020

36

1

134-140

10.16865/j.cnki.1000-7555.2019.0326

2015M572276:中国博士后科学基金面上项目 2016JJ3184:湖南省自然科学基金青年项目 17C1500:湖南省教育厅科学研究项目 :大学生科技创新项目 :***科研启动基金

本校为第一且通讯机构

以玉米淀粉为原料,采用次氯酸钠进行氧化改性,并以聚乙烯醇为接枝剂进行接枝改性,再与酚醛预聚物进行共缩聚反应,制得淀粉/酚醛预聚物(S/PFO)共缩聚胶黏剂。讨论了淀粉/酚醛预聚物比例、共缩聚温度和共缩聚时间对S/PFO共缩聚胶黏剂固体含量、黏度、固化时间、干状胶合强度和湿状胶合强度的影响。结果表明,淀粉/酚醛预聚物比例为15/120,共缩聚温度为90 ℃,共缩聚时间为2.0 h时,所制得的S/PFO共缩聚胶黏剂综合性能最佳。采用同步热分析和扫描电子显微镜对S/PFO共缩聚胶黏剂的固化性能和胶合界面进行了表征。相比于酚醛树脂胶黏剂,S/PFO共缩聚胶黏剂固化温度和固化焓值均降低,能够有效降低生产能耗...

Corn starch was oxidized with sodium hypochlorite and grafted with polyvinyl alcohol. And then the copolycondensation was carried out with the phenolic prepolymer to prepared starch/ phenol-formaldehyde oligomers (S/PFO) copolycondensation adhesive. The effects of starch/ phenol-formaldehyde oligomers ratio, copolymerization temperature and copolymerization time on the solid content, viscosity, curing time, dry bonding strength and wet bonding strength of S/PFO copolymerization adhesive were discussed. The results show that the S/PFO copolycond...