Progress in preparation and application of modified soy protein adhesives
Nowadays,formaldehyde-based adhesives are heavily used in the production of WBP,which is the primary source of indoor formaldehyde pollution and severely affects people's health,work and living quality.In recent years,soy protein adhesives have attracted extensive attention in the field of wood adhe-sives because of their advantages such as non-toxic,biodegradable,low cost and convenient processing.However,compared with the widely used commercial formaldehyde-based adhesives such as phenolic resin and urea-formaldehyde resin,soy protein-based adhesives have some shortcomings in low bonding strength,poor water resistance and poor mildew resistance.In view of the above problems,it is commonly used to functionalize soy protein adhesives by physical and chemical means such as cross-linking modifi-cation,mixed modification,structure modification,hydrolase modification and filling modification.The dif-ferent methods of functional modification of soy protein adhesive were reviewed,the problems of different modification methods were summarized,and the future development of soy protein adhesive was prospec-ted.
soy protein adhesivesmodificationbonding strengthwater resistance
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