ADHESIVE FOR MAKING CHAFF BOARD

摘要

FIELD: chemistry.SUBSTANCE: invention relates to production of adhesives based on phenol-formaldehyde resins, used in wood processing to make chaff boards. Polyvinyl acetate dispersion is further added in amount of 10-20 pts.wt to 100 pts.wt of an adhesive composition based on water-soluble phenol-formaldehyde resin SFZH-3014 while stirring. The polyvinyl acetate dispersion contains a plasticiser - dibutyl phthalate.EFFECT: invention enables to produce an adhesive which provides uniform resinification of chaff particles when making chaff board, increases flexibility of the adhesive joint and improves physical and mechanical properties of the finished product.4 tbl