期刊论文

中文

化工进展

1000-6613

2014

33

12

3368-3373

10.3969/j.issn.1000-6613.2014.12.040

湖南省自然科学基金重点项目(11JJ2021)；

本校为第一机构

针对大豆蛋白胶黏剂耐水性差的缺点，用尿素初步改性大豆分离蛋白（SPI），然后与白乳胶（PVAc）共混合成了共混改性大豆分离蛋白胶黏剂。采用正交实验方法考察了大豆蛋白胶与白乳胶质量比、共混时间、交联剂质量分数、交联时间对大豆蛋白胶黏剂剪切粘接强度的影响，确定了优化配比及制备工艺条件，并在此基础上采用正交试验优化了热压参数。结果表明：大豆蛋白胶与白乳胶质量比10∶1，共混时间1h，交联剂质量分数1.0%，交联时间1.5h，热压温度120℃，热压压强1.2MPa，热压时间2min/mm，涂胶量250g/m2时，测得胶黏剂的干态剪切粘接强度为2.01MPa，按照Ⅰ类胶合板标准测得湿态剪切粘接强度为1.04...

In order to improve the shortcomings of water-resistant of soy protein isolate（SPI） adhesive, SPI was modified by urea and then poly（vinyl-acetate）（PVAc） latex/urea modified SPI blending adhesives was prepared. The mass ratios of urea modified SPI and PVAc latex,blending time,the contents of crosslinking agent,crosslinking time were investigated by an orthogonal experiment to evaluate their effects on the shear bond strengths. The optimal preparation condition was determined. And based on this formula,the hot pressing parameters were opti...