A kind of preparation method of organic formaldehyde adsorbent

Abstract

The invention discloses a preparation method of an organic formaldehyde adsorbent: (1) ester group hydrolysis. The polymethyl acrylate macroporous resin or the polymethyl methacrylate macroporous resin is put into sodium hydroxide aqueous solution or sulfuric acid solution, and heated under reflux for 2 to 10 hours for hydrolysis. (2) Amination and imidization reactions. (1) Wash the hydrolyzed macroporous resin to neutrality, add an aminating agent, and react at 50°C to 150°C for 2 to 20 hours, take out the macroporous resin, wash and dry. The formaldehyde adsorbent is a solid powder or granular organic material, including a matrix material and active functional groups, the active functional groups are amino functional groups and imidazole derivative functional groups. The formaldehyde adsorbent achieves the purpose of adsorbing formaldehyde through the reaction of formaldehyde with amine groups and imidazole derivatives.

Description

technical field [0001] The invention belongs to the field of air pollution purification, and relates to an organic formaldehyde adsorbent and a preparation method thereof. Background technique [0002] In recent years, with the continuous improvement of living standards and the continuous improvement of people's living conditions, people have begun to pay more and more attention to the environmental pollution caused by interior decoration. Relevant state departments have successively formulated a series of standards on indoor environment, but the reality is not optimistic. Formaldehyde is recognized as the No. 1 killer of home decoration and is closely related to people's lives. In particular, phenolic resin with formaldehyde as the main component is the preferred adhesive for plywood, thin board, medium density board, etc. used in interior decoration. After these panels are used as decoration materials or made into furniture, the residual free formaldehyde in the panels wi...

AI Technical Summary

Problems solved by technology

For example, according to the good solubility of formaldehyde in water, some manufacturers use water washing to purify formaldehyde. Although the short-term effect is better, there are also some unfavorable factors. Bacteria, viruses, etc.

There is also a formaldehyde scavenger, which uses the chemical activity of formaldehyde to spray on the surface of furniture or in the air to eliminate and capture formaldehyde, but this formaldehyde scavenger may cause secondary pollution

It is mostly used by some air treatment companies, and it is inconvenient for ordinary customers who have already moved in or used furniture