Self-heating inorganic adhesive and its preparation method and use method in inorganic artificial board production

Abstract

The invention discloses a self-heating inorganic adhesive. The self-heating inorganic adhesive comprises two components and concretely comprises an inorganic adhesive semi-finished product and a quicklime gelatin capsule in a weight ratio of (40-60): (10-25). The inorganic adhesive semi-finished product is prepared from 30-60 parts by weight of water, 20-30 parts by weight of aluminum hydroxide, 20-35 parts by weight of phosphoric acid, 10-20 parts by weight of calcium sulfate, 4-10 parts by weight of fly ash, 3-5 parts by weight of calcium carbonate, 2-4 parts by weight cooked glutinous riceflour and 0.3-0.7 parts by weight of curcumin. The invention also discloses a preparation method of the self-heating inorganic adhesive. Through use of the cooked glutinous rice flour as the initial adhesive, the initial viscosity of the adhesive is effectively increased. Through use of the inorganic adhesive in the production of agricultural and forestry residual fiber (planing) boards, the problems of loosing in the board blank transportation and loading and unloading are solved. Compared with other initial adhesives, the cooked glutinous rice flour has obvious price advantages.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a self-heating inorganic adhesive, a preparation method thereof and an application method thereof in the production of inorganic wood-based panels. Background technique [0002] my country is a big country of wood-based panels. The national production of wood-based panels has exceeded 300 million cubic meters, and it is increasing at an average annual rate of 14.6%. The rapid development of the wood-based panel industry provides excellent industrial support for the development of my country's furniture and interior and exterior decoration industries. At present, my country's wood-based panel production mainly uses urea-formaldehyde resin adhesives. Urea-formaldehyde resin adhesive has the advantages of good gluing performance and low price, and has been widely used in the production of wood-based panels. However, the application of urea-formaldehyde resin adhesive...

AI Technical Summary

Problems solved by technology

Inorganic adhesives are mostly used in the production of wood-based panels by cold pressing molding process, which has long production cycle, low production efficiency and large mold investment

In order to solve this drawback, inorganic adhesives need to add a certain amount of coagulant in the production process of wood-based panels. On the one hand, it increases the production cost of wood-based panels. Pre-curing problems, which in turn affect the physical and mechanical properties of wood-based panels