Chromogenic formaldehyde adsorption material and method for preparing same

Abstract

The invention discloses a chromogenic formaldehyde adsorption material and a method for preparing the chromogenic formaldehyde adsorption material. The chromogenic formaldehyde adsorption material is prepared from a substrate, an active component for formaldehyde, an auxiliary agent and a chromogenic agent of formaldehyde; the mass ratio of the active component for formaldehyde to the auxiliary agent is 1:0.03 to 1:0.2; the use amount of the chromogenic agent for formaldehyde is 0.1-1 per mill of the mass of the mixture of the active component for formaldehyde and the auxiliary agent; the active component of formaldehyde is polyethyleneimine or polyethylene polyamine; the chromogenic agent of formaldehyde is a mixture of 3-methyl-2-benzothiazolinonehydrazone hydrochloride hydrate (MBTH) and a ferric iron salt or 4-amino-3-hydrazine-5-mercapto-1,2,4-triazole (AHMT); and the mixed molar ratio of MBTH to the ferric iron salt is 1:1-1:20. The chromogenic formaldehyde adsorbent cannot cause secondary pollution, is safe to use and easy to prepare, is environmental friendly, and can be produced industrially easily.

Description

technical field [0001] The invention relates to a color-developing formaldehyde adsorbing material and a preparation method thereof. The color-developing formaldehyde adsorbing material shows the reaction degree of formaldehyde through color change, and is suitable for controlling formaldehyde pollution in the air. Background technique [0002] With the development of the economy and the improvement of people's living standards, a large number of new houses have been built, and the interior decoration has become more and more exquisite. my country's "Indoor Air Quality Standards" stipulates that the maximum allowable concentration of formaldehyde in the living room is 0.10mg / m 3 , the vast majority of newly renovated homes have indoor formaldehyde concentrations that exceed the standard by several to ten times within 5-10 months after the completion of the renovation. Residents usually adopt relatively passive methods such as opening windows for ventilation or waiting for a ...

AI Technical Summary

Problems solved by technology

The patent application number is 03104742.4, and the name is "adsorption and decomposition agent for indoor harmful gas formaldehyde". It discloses a formaldehyde adsorption and decomposition agent that uses methyl yellow, magenta, etc. as indicators to indicate the degree of formaldehyde reaction, but the patent is a liquid preparation. , directly sprayed indoors when used, the effect of removing formaldehyde is limited, and the oxides contained in the liquid will cause secondary pollution