低黏度高固体含量植物蛋白胶黏剂制备与应用技术

（1）利用超声处理（UT）技术处理大豆蛋白(SPI)，调控大豆蛋 白胶黏剂的分子量以及粒径分布的均匀性，提高其分散性并形成均匀 稳定的粘接层、并且解析预处理大豆蛋白分子对粒径及胶层黏附稳定性的影响，优化胶黏剂制备方案。 （2）利用蛋白酶降解大豆蛋白技术，通过打断 SPI 多肽链之间的肽键调控大豆蛋白胶黏剂的分子量，降低大豆蛋白胶黏剂的黏度， 提高胶黏剂的反应活性。改善胶黏剂的涂覆性和渗透性。大豆蛋白分 子降解与重组形成均匀稳定胶层，解析大豆蛋白分子降解与重组对分 散性以及胶接性能影响规律，优化酶解与蛋白重组方案。 （3）通过加入不同比例的环氧交联剂，用于改性大豆蛋白胶黏剂，研究其对胶黏剂流变性能、固体含量、耐水性等的影响，优化胶黏剂制备方案。

(1) Ultrasonic treatment (UT) is applied to modify soy protein isolate (SPI). The molecular weight and particle size distribution uniformity of the soy protein adhesive are regulated to improve its dispersibility and form a uniform and stable adhesive layer. Meanwhile, the effect of pretreated SPI molecules on the particle size and adhesion stability of the adhesive layer is elucidated, and the preparation protocol of the adhesive is optimized.

(2) Protease-mediated degradation of SPI is adopted, where the peptide bonds between SPI polypeptide chains are cleaved to regulate the molecular weight of the soy protein adhesive, reduce its viscosity, and enhance its reactive activity. These modifications improve the coatability and permeability of the adhesive. As the degraded and recombined SPI forms a uniform and stable adhesive layer, the influencing rules of SPI degradation and recombination on its dispersibility and bonding performance are clarified, and the enzymatic hydrolysis and protein recombination protocols are optimized.

(3) Epoxy crosslinking agents with varying addition ratios are incorporated to modify the soy protein adhesive. The impacts of these crosslinkers on the rheological properties, solid content, water resistance and other key performance indicators of the adhesive are investigated, and the preparation protocol of the adhesive is optimized.