Aldehyde-free adhesive for floor

Abstract

The invention discloses an aldehyde-free adhesive for floor. The adhesive is prepared from the following raw materials in parts by weight: 10-20 parts of polydiphenylmethane diisocyanate, 20-30 partsof polyvinyl alcohol, 5-10 parts of vegetable protein, 1-5 parts of an emulsifying agent, 5-10 parts of nano-montmorillonite, 1-5 parts of a toughening agent, 10-20 parts of soyabean protein and 50-80parts of a dispersion medium. The aldehyde-free adhesive for the floor has good bonding performance and film forming performance, and is environmentally-friendly, free from release of harmful gases,good in water resistance and high in adhesive strength.

Description

technical field [0001] The invention relates to the field of floor production, in particular to a formaldehyde-free adhesive for floor. Background technique [0002] Composite flooring is a three-layer or multi-layer board-like material that is made of wood sections that are peeled into veneers or sliced ​​into thin wood, and then glued with adhesives. Usually, odd-numbered layers of veneers are used, and adjacent layers are The fiber directions of the veneers are glued perpendicular to each other. [0003] The adhesives used in the production of plywood are usually self-made adhesives, and the self-made adhesives are roughly composed of glue and some auxiliary raw materials. The use of traditional adhesives has high technical requirements and is difficult for workers to master. In addition, traditional adhesives have disadvantages such as large amount of glue used, large internal stress, poor heat resistance and scalding resistance, and easy glue penetration. Contents o...

AI Technical Summary

Problems solved by technology

The use of traditional adhesives has high technical requirements and is difficult for workers to master

In addition, traditional adhesives have disadvantages such as large amount of glue, large internal stress, poor heat and scald resistance, and easy glue penetration.