Modified starch-based wood adhesive as well as preparation method and application thereof

Abstract

The invention relates to a modified starch-based wood adhesive as well as a preparation method and application thereof, which belong to the fields of an adhesive and a preparation method thereof. The preparation method comprises the following steps of: after carrying out acidolysis-gelatinization pretreatment on starch as a main raw material, carrying out graft copolymerization on the starch in a seed emulsion polymerization process by adopting vinyl acetate monomers, and adding nano silicon dioxide sol and other assistants after cooling to finally obtain a wood starch adhesive with excellent performance. The main technical indexes of the adhesive prepared with the preparation method are all better than those of the traditional starch-based wood adhesive, and the adhesive has the advantages of no toxicity or pollution, high bonding strength, good water resistance, milky white and glossy color, high drying speed, long storage time and the like and can be widely applied to bonding decorative wood and artificial boards.

Description

technical field

[0001] The invention relates to a modified starch-based wood adhesive and its preparation method and application, belonging to the field of adhesives and its preparation. Background technique

[0002] Starch has the advantages of being renewable, pollution-free, low-cost, and biodegradable. Using starch as the main raw material to prepare wood adhesives can greatly reduce the amount of non-renewable resource petroleum monomers and reduce costs. Chinese patent ZL200510040113.5 "A preparation method of starch glue for wood" proposes a method of using starch as the main raw material, carrying out acidolysis, oxidation, graft copolymerization modification, and finally adding certain auxiliary agents to prepare starch glue. craft. The starch glue prepared by this process has the advantages of low cost and environmental protection, but its appearance, bonding strength, and water resistance need to be further improved to further expand its application. The present...