Bio-oil starch adhesive used for artificial board and preparation method

Abstract

The invention relates to a bio-oil starch adhesive used for an artificial board, which belongs to the artificial board adhesive technical field. In a preparation method of the adhesive, a composite denaturation method is employed for performing denaturation treatment on starch, hydrochloric acid and an oxidizing agent are added for acidolysis and oxidation denaturation on the starch, the starch molecular weight is reduced, the reaction activity is enhanced; a stabilizing agent is added, an acrylamide grafting monomer is employed to form a basic frame structure of an main agent of the adhesive; the bio-oil is added, the acid and an aldehyde substance in the bio-oil is used for modifying a chemical group in the frame structure to obtain the main agent of the adhesive; and a curing agent composed of dialdehyde and isocyanate as well as a filler are added to prepare the bio-oil starch adhesive. The bio-oil starch adhesive used for artificial board has the characteristics of green environmental protection, low cost, good glued joint performance, low viscosity, long working life and simple preparation technology, and can replace urea resin widely used in the current artificial board field and thoroughly solve the severe formaldehyde pollution problem of the artificial board product.

Description

technical field

[0001] The invention belongs to the technical field of wood-based panel adhesives, in particular to a preparation method of a bio-oil starch adhesive for wood-based panels. technical background

[0002] Urea-formaldehyde resin is the main type of glue used in wood-based panels in China, accounting for more than 90% of the glue used in wood-based panels. In recent years, with the enhancement of people's awareness of environmental protection and the improvement of national environmental protection regulations, the relatively serious formaldehyde pollution caused by urea-formaldehyde resins has made green and environmentally friendly biomass adhesives a research hotspot. Starch-based adhesives are cheap, the main raw materials are renewable, and are environmentally friendly. They have been industrially applied in the bonding of paper materials (such as corrugated boards, wallpapers, paper tubes, etc.), and have the potential to replace urea-formaldehyde resin ad...

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