Green and low-toxicity formaldehyde scavenger and preparation method thereof

Abstract

The invention discloses a green and low-toxicity formaldehyde scavenger. The formaldehyde scavenger comprises the following components in parts by weight: 5-15 parts of ethylene urea, 5-15 parts of adipic dihydrazide, 10-80 parts of cysteine hydrochloride, 5-20 parts of a surfactant, 10-70 parts of a penetrating agent and 720-1000 parts of water. Compared with a traditional formaldehyde scavenger,the formaldehyde scavenger exerts synergistic effect among multiple components, and rapidly removes formaldehyde in indoor air; a reaction product of the scavenger and formaldehyde is a non-toxic andharmless substance; meanwhile, further diffusion of formaldehyde is prevented; the surfactant and the penetrant in the efficient formaldehyde scavenger can enable the formaldehyde catching agent to form films on the surface and inside a formaldehyde gas diffusion source; cysteine hydrochloride can improve the moisture retention of the film, promote the reaction between the formaldehyde scavengerin the film and formaldehyde in the diffusion source to generate a non-toxic harmless non-volatile product, and prevent formaldehyde from being released into air.

Description

technical field [0001] The invention belongs to the field of environmentally friendly new materials, and in particular relates to a green, low-toxic formaldehyde scavenger and a preparation method thereof. Background technique [0002] Excessive formaldehyde is a major cause of human building syndrome, and the research on removing trace formaldehyde in indoor air is very important. At present, researchers in many countries have applied for a large number of patents for various formaldehyde removal methods invented. The methods of removing formaldehyde can be roughly divided into: chemical method, biological absorption method, and physical adsorption method are described below. [0003] (1) Chemical reaction method: volatile aldehydes are difficult to physically adsorb, and chemical reactions such as condensation and degradation for formaldehyde removal in solution can be loaded with reactive reagents that can combine with aldehydes such as resorcinol and the surface of the...