摘要
采用酸、碱和酸碱联合3种方式处理脱脂豆粉,制备改性豆胶,并用于压制三层胶合板,以Ⅱ类胶合板的标准检测其耐水胶合强度。结果表明,酸碱处理均能提高改性豆胶的耐水性能,当酸用量为11.9份时,改性豆胶压制的胶合板最高耐水胶合强度为0.48MPa;碱的用量为22.6份时,耐水胶合强度为0.43MPa;酸碱联合改性豆胶的效果优于单独用酸或碱改性,当酸、碱的用量分别为11.9和39.9份时,改性豆胶压制的胶合板最优耐水胶合强度为0.61MPa。红外光谱分析表明,酸碱联合改性豆胶能综合酸、碱单独使大豆蛋白变性的优点,更有利于提高改性豆胶的耐水性。
The defatted soy flour was processed by acid, base and acid-base to preparing modified soy-based adhesives, which were used on pressing three layers plywood, and its water-resistant bonding strength was tested by the request of China National Standard Plywood type Ⅱ. The results illuminated that the water-resistant of modified soy-based adhesives improved by acid or base＇s processing. When the usage of acid was 11.9, the higher water-resistant bonding strength of plywood which pressed with modified soy-based adhesive was 0.48 MPa; and the usage of base was 22.6, the water-resistant bonding strength was 0.43 MPa. The acid-base as soy-based adhesives＇ modifier better than single acid or base, when the usage of acid and base were 11.9 and 39.9, the best water-resistant bonding strength of plywood was 0.61 MPa. The infrared spectrum analysis showed that as the modifiers of soy-based adhesives acid-base gather the merit of single acid or base modifying soy proteins, and improving the water-resistant of modified soy-based adhesive more effectively.
出处
《福建林学院学报》
CSCD
北大核心
2010年第4期349-352,共4页
Journal of Fujian College of Forestry
基金
国家自然科学基金资助项目(30972311)
福建省林业厅科学基金资助项目(2007021961)
福建省科技厅产学重大专项基金资助项目(2010N5001)
关键词
酸
碱
改性豆胶
耐水胶合强度
红外光谱分析
acid
base
modified soy-based adhesive
water-resistant bonding strength
infrared spectrum analysis
