Environment-friendly modified isocyanate resin aqueous emulsion and manufacturing method thereof

Abstract

The invention discloses an environment-friendly modified isocyanate resin aqueous emulsion and a manufacturing method thereof. According to the method, isocyanate resin, polyamide polyepoxy active molecular compounds, amino nitrile molecular compounds and ammonium chloride are adopted for a chemical reaction according to a certain ratio, the modified isocyanate resin aqueous emulsion is prepared through emulsification, and glue is applied to fibers in the dynamic stirring process by conducting double-channel spray gluing and mixing the modified isocyanate resin aqueous emulsion with wood fibers. The glued fibers need to be dried by hot air in the stirring process, and after glued fiber plate blanks are pressed under high-temperature and high-pressure conditions, formaldehyde-free plates with the thickness of 5-200 mm and the density of 0.1-1.2 g / cm<3> can be obtained. According to the technology, the isocyanate resin aqueous emulsion can form a twined and cross-linked bionic structuresystem in a series of functional modification processes and has the advantages of being excellent in performance, environmentally friendly, low in cost and the like.

Description

technical field [0001] The present invention relates to an environmentally friendly modified isocyanate resin aqueous emulsion that can be used for artificial fiber boards and an application method thereof, in particular to a method for manufacturing an environmentally friendly modified isocyanate resin aqueous emulsion. The artificial fiber board can be used in the fields of office and construction. Such as office furniture, wooden floor and replace some solid wood construction consumables. Background technique [0002] Due to the lack of forest resources in our country, a large number of wood-based panels are needed to meet the needs of consumers. Since the reform and opening up, wood-based panels, especially man-made fiberboards, have developed rapidly, but so far mainly use trialdehyde glue, melamine formaldehyde resin, and phenolic resin. , Urea-formaldehyde resin. Since trialdehyde glue will release formaldehyde and affect human health, it has gradually been replaced ...

AI Technical Summary

Problems solved by technology

Since trialdehyde glue will release formaldehyde and affect human health, it has gradually been replaced by environmentally friendly adhesives. At present, the main development direction is MDI adhesives and soybean glue, but the price of MDI adhesives is currently high, much higher than Ordinary trialdehyde glue and soybean glue also have many shortcomings due to their infancy, mainly in terms of strength and water swelling rate.

Although it can be improved through modification, many modification methods currently cost too much and are too poor in practicability

Mainly focus on graft modification of soybean protein, enzyme modification, cross-linking agent modification, but the cost is generally high and lack of practicability

Images