Formaldehyde removing device

Abstract

The invention relates to a formaldehyde removing device and a preparation method thereof, and is characterized in that the device is prepared by mixing the following raw materials by weight: 50-60% of urea, and the balance of starch. Some copper sulphate can also be added to prevent powder from rotting. The powder can be blended into aqueous solutions with different concentrations, and the aqueous solutions can be coated on furniture or plate materials without painting so as to eliminate adsorption-state and combination-state formaldehyde. Through tests, the formaldehyde concentration is lower than the human formaldehyde smell sense threshold by 0.06 mg / m3 (the national standard is 0.08 mg / m3), and is only 0.015 mg / m3; and the formaldehyde harm is basically eliminated.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a novel formaldehyde removal device. Background technique [0002] People usually use large areas of paint and adhesives in home decoration, which generally contain formaldehyde. According to statistics, about 80% of the wood-based panel industry uses formaldehyde-based resin binders. In addition, adhesives are often used in the process of furniture production, wall and floor decoration, etc. Therefore, the release of formaldehyde has become one of the main sources of indoor air pollution. When formaldehyde reaches a certain concentration, it will cause great harm to the human body, irritate the upper respiratory tract and cornea, and cause abnormal sense of smell, irritation, allergy, abnormal lung function, abnormal immune function and other adverse consequences, especially for the elderly, children and pregnant women. , can cause infertility in pregnant women and deformiti...

AI Technical Summary

Problems solved by technology

[0008] The patent application number 200410077942.6 discloses a formaldehyde scavenger, which contains expensive materials such as vitamin C, which is expensive and not suitable for industrial use. Methyl, this technical solution is mainly used for the removal of formaldehyde in the production process, and it cannot be removed for the slowly released formaldehyde in building materials, furniture materials, and interior decoration materials in residential buildings

The patent with application number 03100568.3 discloses a formaldehyde scavenger and its manufacturing method. The configuration process is complex and requires multiple steps of filtration, extraction, washing, vacuum evaporation, crystallization, and drying. The price is high and the effect is mediocre.