林产化学与工业Issue(1)：119-126,8.DOI:10.3969/j.issn.0253-2417.2016.01.017
新型酚醛树脂改性大豆蛋白基胶黏剂的研究
Modification of Soy Protein-based Adhesives by a New Phenol Formaldehyde Resin
摘要
Abstract
Soy-based adhesive (S) was prepared by use of defatted soy flour as feedstock,and new phenol formaldehyde resins were synthesized by using common formaldehyde and high concentration formaldehyde ( PF1 , PF2 ) as crosslinker agent. S and PF1 ,or PF2 were then directly blended to form the modified S. The structure and the performance of these adhesives were subsequently characterized by differential scanning calorimetry ( DSC) ,infrared spectrum ( FT-IR) ,dynamic thermal mechanical properties ( DMA) and nuclear magnetic resonance ( 13C NMR) ,respectively. It was found that with the same molar ratio,plywood of S crosslined by PF2 showed better bonding performance and strength stability. Their dry and wet strengths increased by nearly 4. 3% and 11. 6% compared with those crosslined by PF1 ,respectively. Dynamic DSC analysis showed that PF2 was easy to react with S by decreasing the activation energy of adhesives system. 13 C NMR showed that the hydroxymethyl content PF2 system was 88. 73%,which was significantly higher than the 80. 91% of PF1 . FT-IR analysis confirmed that the phenol formaldehyde resin reacted with amino of S, and PF2 showed much more efficient than PF1 . The DMA results showed that PF2 could improve the mechanical performance and thermal stability of the final product,reduce the onset curing temperature and curing temperature,and accelerate the curing reaction rate of modified S.关键词
高浓度甲醛/酚醛树脂/豆胶/固化性能Key words
high concentration formaldehyde/phenol formaldehyde resin/soy-based adhesive/curing performance分类
化学化工引用本文复制引用
吴志刚,杜官本,雷洪,王辉,席雪冬,曹明,廖晶晶..新型酚醛树脂改性大豆蛋白基胶黏剂的研究[J].林产化学与工业,2016,(1):119-126,8.基金项目
林业公益性行业科研专项(201304505) （201304505）
“十二五”国家科技支撑计划资助(2012BAD24B03) （2012BAD24B03）
云南省中青年学术带头人后备人才项目资助(2011HB024) （2011HB024）
