Colour development methyl aldehyde adsorption material and preparation method thereof

A formaldehyde adsorption and formaldehyde technology, applied in chemical instruments and methods, analysis by making materials undergo chemical reactions, material analysis by observing the impact on chemical indicators, etc., can solve the limited effect of removing formaldehyde and secondary pollution and other issues, to achieve the effect of safety and environmental protection, simple color change

Active Publication Date: 2009-07-01
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 25ml of polyethylene polyamine polymer with a molecular weight of 8000 and a concentration of 30% was fully mixed with 0.5ml of polyethylene glycol, diluted with 20ml of deionized water to prepare a formaldehyde reactant, and then added with 20mg of β-naphthol indicator and mixed evenly. Spray the mixed liquid evenly on the surface of a pleated paper filter of 25mm×40mm, and vacuum-dry it at 30°C to make a color-developing formaldehyde adsorption filter, which can be used as an air purifier component.

Embodiment 2

[0018] Mix 42ml of polyethylene polyamine polymer with a molecular weight of 50,000 and a concentration of 20% with 1.5ml of polypropylene glycol, add 10ml of deionized water to dilute to make a formaldehyde reactant, and then add 80mg of benzoxoethylketone indicator and mix evenly. spare. Take 15g of adsorption resin and impregnate it in the above mixed liquid, stir, and then vacuum-dry at 45°C to obtain a color-changing formaldehyde adsorption resin. The adsorption capacity of the resin to formaldehyde is 3.5mmol / g.

Embodiment 3

[0020] Mix 15ml of polyalkyleneimide with a molecular weight of 5000-6000 and a concentration of 30% with 0.5ml of polyethylene glycol, add 30ml of deionized water to make a formaldehyde reactant, and then add 60mg of benzoxoethylketone indicator to mix Evenly, spare. Take 10 g of nylon staple fiber, spray the above mixed solution on the surface of the fiber, and dry it in vacuum at 65° C. to obtain a color-changing formaldehyde adsorption fiber material. The adsorption capacity of the fiber to formaldehyde is 1.7 mmol / g.

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Abstract

The invention discloses a chromogenic formaldehyde adsorbing material and a preparation method thereof. The adsorbing material consists of a carrier, a high molecular organic amine polymer, a polylol polymer and a formaldehyde reaction indicator, wherein the high molecular organic amine polymer and the polylol polymer account for 1 to 50 percent of formaldehyde adsorbent, the formaldehyde reaction indicator is little, and the balance being the carrier. The preparation method thereof comprises the following steps: mixing the high molecular organic amine polymer and the polylol polymer according to mass, adding deionized water to dilute the mixture so as to prepare formaldehyde reagent; mixing the formaldehyde reagent and the formaldehyde reaction indicator; and spraying or dipping the mixed solution onto the surface of the carrier, and drying the carrier and so on. The adsorbing material and the preparation method can quickly, thoroughly and continuously remove formaldehyde pollution in indoor air until the content of the formaldehyde is reduced to safe concentration, are nontoxic, pollution-free, safe and environment-friendly to use, and can intuitively show the reaction degree of the formaldehyde.

Description

technical field [0001] The invention relates to a color-developing formaldehyde absorbing material and a preparation method thereof. The color-developing formaldehyde absorbing material shows the degree of formaldehyde reaction through color change, and is suitable for indoor formaldehyde pollution control. 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 exceeding the standard by several to ten times within 5 to 10 months after the renovation is completed. Residents usually adopt relatively passive methods such as opening windows for ventilation or waiting for a period of ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26G01N21/78
Inventor 张琴范海明陈兆文郭绪涛
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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