摘要
为了降低大豆蛋白胶的成本,提高其耐水性能和涂布性能,本研究以高温脱脂豆粕粉为主要原料,以环氧氯丙烷-聚酰胺多胺(PAE)为交联剂,并添加十二烷基硫酸钠(SDS),制得豆粕基大豆蛋白胶粘剂。着重探讨了高温脱脂豆粕粉用量以及SDS用量对大豆蛋白胶粘剂的涂布性能、胶合强度和耐水性能的影响及其作用机制。研究结果表明:引入适当SDS可通过其乳化作用使大豆蛋白伸展,从而提升大豆蛋白胶粘剂的润湿性和交联活性,进而改善胶合性能和涂布挂胶性;当高温脱脂豆粕粉用量为70%、SDS用量为0.30%时,所制备的大豆蛋白胶粘剂的胶合性能和涂布挂胶性达到最好,其63℃水泡湿强度提高到1.45 MPa,比国家标准要求值提高了45%,满足II类胶合板工业化生产需要。
In order to reduce the cost of soybean protein adhesive and improve its water resistance and coating performance,the soybean protein adhesive was prepared in this study,by using high-temperature defatted soybean meal powder as main raw material,polyamide polyamine-epichlorohydrine(PAE)as crosslinker,and adding sodium dodecyl sulfate(SDS).The effects of the amount of high-temperature defatted soybean meal powder and SDS content on the coating properties,bonding strength and water resistance of soybean protein adhesive as well as their mechanism were emphatically discussed.The research results showed that the addition of appropriate amount of SDS could stretch soybean protein through its emulsification,thus enhancing the wettability and crosslinking activity of soybean protein adhesive,which in turn improved the bonding performance and coating properties.When the amount of high-temperature defatted soybean meal powder was 70%and SDS content was 0.30%,the prepared soybean protein adhesive achieved the best bonding performance and coating properties,and its wet strength of 63℃soaking was increased to 1.45 MPa,which was 45%higher than the national standard requirements,meeting the needs of industrial production of type Ⅱ plywood.
作者
何文诚
阚雨菲
阚浩峰
刘泽顺
舒焕然
高振华
He Wencheng;Kan Yufei;Kan Haofeng;Liu Zeshun;Shu Huanran;Gao Zhenhua(College of Materials Science and Engineering,Northeast Forestry University,Harbin 150040,Heilongjiang,China;Zhejiang Quzhou Bolan Decoration Materials Co.,Ltd.,Quzhou 324000,Zhejiang,China;Heilongjiang Province Key Laboratory of Wood Science and Technology,Harbin 150040,Heilongjiang,China)
出处
《中国胶粘剂》
CAS
2023年第3期1-6,共6页
China Adhesives
基金
黑龙江省重点研发计划项目(JD22A009)
关键词
大豆蛋白胶粘剂
豆粕粉
涂布挂胶性
胶合性能
soybean protein adhesive
soybean meal powder
coating property
bonding performance
