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Preparation method of macromolecular formaldehyde adsorbent

A formaldehyde adsorption and polymer technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as formaldehyde volatilization, and achieve the effect of reducing formaldehyde, solving the problem of formaldehyde volatilization, and having a wide range of applications.

Inactive Publication Date: 2020-07-21
浙江明江新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most modified plastics companies use porous adsorption materials to adsorb formaldehyde when controlling formaldehyde gas. However, when encountering high temperature, formaldehyde will desorb again. Therefore, this method cannot fundamentally solve the problem of formaldehyde volatilization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare 191g of acrylic acid-sodium acrylate solution with a neutralization degree of 70%, add 25g of acrylamide and 125g of polyoxyethylene ether to the acrylic acid-sodium acrylate solution, add 0.2g of N,N-methylenebisacrylamide The temperature was raised to 60°C, and 0.5 g of ammonium persulfate was added, and the stirring was stopped after the reaction system became viscous, and then reacted at constant temperature for 2 hours. Rinse the reacted polymer with 500mL of deionized water, soak the polymer in 300mL of absolute ethanol for 1 hour, then dry it in an oven at 80°C for 24 hours, and obtain a polymer formaldehyde adsorbent after crushing.

Embodiment 2

[0019] Prepare 204g of acrylic acid-sodium acrylate solution with a neutralization degree of 80%, add 25g of acrylamide and 125g of polyoxyethylene ether to the acrylic acid-sodium acrylate solution, add 0.2g of N,N-methylenebisacrylamide The temperature was raised to 60°C, and 0.5 g of ammonium persulfate was added, and the stirring was stopped after the reaction system became viscous, and then reacted at constant temperature for 2 hours. Rinse the reacted polymer with 500mL of deionized water, soak the polymer in 300mL of absolute ethanol for 1 hour, then dry it in an oven at 80°C for 24 hours, and obtain a polymer formaldehyde adsorbent after crushing.

Embodiment 3

[0021] Prepare 218g of acrylic acid-sodium acrylate solution with a neutralization degree of 90%, add 25g of acrylamide and 125g of polyoxyethylene ether to the acrylic acid-sodium acrylate solution, add 0.2g of N,N-methylenebisacrylamide The temperature was raised to 60°C, and 0.5 g of ammonium persulfate was added, and the stirring was stopped after the reaction system became viscous, and then reacted at constant temperature for 2 hours. Rinse the reacted polymer with 500mL of deionized water, soak the polymer in 300mL of absolute ethanol for 1 hour, then dry it in an oven at 80°C for 24 hours, and obtain a polymer formaldehyde adsorbent after crushing.

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PUM

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Abstract

The invention relates to a preparation method of a macromolecular formaldehyde adsorbent, and belongs to the field of preparation or chemical processing of organic macromolecular compounds. The preparation method comprises the following steps: preparing an acrylic acid-sodium acrylate solution with a certain neutralization degree, adding acrylamide and a polyoxyethylene ether solution into the sodium acrylate solution, adding a cross-linking agent, heating to a certain temperature, adding an initiator, reacting for a certain period of time after a reaction system becomes viscous, purifying anddrying to obtain the formaldehyde adsorbent. The novel formaldehyde adsorbent synthesized by the method is high in molecular weight and good in heat resistance, has a large number of amide adsorptiongroups, can react with formaldehyde at high temperature, and is suitable for being used in the processing process of modified plastics.

Description

technical field [0001] The invention proposes a method for preparing a formaldehyde adsorbent in the field of organic polymer compound preparation or chemical processing. Background technique [0002] At present, most of the automotive interior parts are modified polypropylene, and during the modification and injection molding process of polypropylene, formaldehyde gas that is very harmful to the human body will be generated due to high temperature. Therefore, controlling the formaldehyde content in plastics is a key task for modified plastics companies. [0003] At present, most modified plastics companies use porous adsorption materials to absorb formaldehyde when controlling formaldehyde gas. However, when encountering high temperature, formaldehyde will desorb again. Therefore, this method cannot fundamentally solve the problem of formaldehyde volatilization. [0004] The formaldehyde adsorbent synthesized by the invention is a high-molecular polymer with a large number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01J20/26B01D53/02B01D2257/70
Inventor 金江彬陈静王艳宁范开鑫
Owner 浙江明江新材料科技股份有限公司
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