Formaldehyde elimination agent and preparation method thereof

Abstract

The invention discloses a formaldehyde eliminating agent and preparing method thereof. Weight proportioning of raw material for the formaldehyde eliminating agent is: 100-300 quotient of formaldehyde, 150-700 quotient of urea, 50-500 quotient of water, 10-80 quotient of accelerant, 0.1-5 quotient of stabilizer, and 1-20 quotient of catalyst. The preparing method includes steps: adding each component into reaction kettle in turn, stirring the mixture at temperature of 20-50 DEG C until equally mixed and whole dissolved, adjusting pH between 7.5-9.0, and stirring until stable. Advantages of the formaldehyde eliminating agent are: preparing cost is low, formaldehyde eliminating effect is evident and permanent when the formaldehyde eliminating agent is used with urea-formaldehyde resin glue or melamine modified urea-formaldehyde resin glue for synthetic plate of incompetent formaldehyde releasing amount and E2 level synthetic plate, making formaldehyde releasing amount of incompetent and E2 level middle/high density fiber board reach to E2 and E1 level separately and observably reducing preparing cost of the middle/high density fiber board without reducing mechanics capability of the synthetic plate.

Description

technical field [0001] The invention relates to a preparation for eliminating harmful chemical substances and a preparation method thereof, in particular to a preparation for eliminating formaldehyde and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, decoration and purchase of new furniture have become common things in people's lives. Various types of wood-based panels are often used in large quantities in decoration and furniture manufacturing, such as plywood, blockboard, medium-density fiberboard, and particle board. In fact, in 2005, the output of my country's wood-based panels has exceeded 60 million m 3 , per capita consumption of 3m 2 wood-based panels. However, 90% of the adhesives used in these wood-based panels are urea-formaldehyde resin and its modified products, which have the problem of formaldehyde release and often become the main source of formaldehyde pollution in indoor air. Alt...

AI Technical Summary

Problems solved by technology

[0007] The primary purpose of the present invention is to provide a formaldehyde scavenger that can be directly added to the urea-formaldehyde resin adhesive for the problems existing in the prior art. The formaldehyde scavenger has high formaldehyde elimination rate, long-lasting effect and low cost. When the urea-formaldehyde resin with the formaldehyde scavenger is used to prepare wood-based panels, it can produce green and environmentally friendly wood-based panels with good mechanical properties and low formaldehyde emission without reducing the production efficiency of wood-based panels and without increasing the production cost of wood-based panels. Fundamentally eliminate formaldehyde pollution in indoor air caused by wood-based panels and their products