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A kind of preparation method of indoor latex paint that absorbs and removes formaldehyde

A latex paint and formaldehyde technology, applied in latex paint, coating, etc., can solve the problems of low interaction efficiency, formaldehyde desorption, uneven dispersion of emulsion, etc., to improve adsorption and removal efficiency, improve aldehyde removal efficiency, and strong The effect of adsorption performance

Active Publication Date: 2020-05-12
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the aldehyde-removing latex paints on the market in China use some substances with adsorption properties as aldehyde-removing materials. When the formaldehyde-removing latex paint is saturated with formaldehyde, it will desorb formaldehyde. This phenomenon will Severely limit the formaldehyde removal efficiency of latex paint; although, many high-quality formaldehyde removal latex paints will add some catalytic degradation and chemical aldehyde removal additives on the basis of absorbing formaldehyde to increase the amount of formaldehyde removal, but simple The interaction efficiency between the components of the compounded formaldehyde removal filler is low, and it is prone to uneven dispersion in the emulsion, which significantly reduces the formaldehyde removal performance of latex paint

Method used

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  • A kind of preparation method of indoor latex paint that absorbs and removes formaldehyde

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Experimental program
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Effect test

Embodiment 1

[0024] (1) Preparation of chitin-modified graphene airgel.

[0025] a. Add 1 g of graphite oxide to a beaker filled with 300 mL of deionized water, and ultrasonically treat it in an ultrasonic cell pulverizer for 30 min, with an ultrasonic power ratio of 90%, to prepare a graphene oxide aqueous solution.

[0026] b. Add 10 g of chitin to a beaker filled with 100 mL of deionized water, mechanically stir and disperse for 1.5 h at a stirring speed of 180 rpm to obtain a chitin aqueous dispersion.

[0027] c. Add 300mL graphene oxide aqueous solution to the reactor, then add ethylenediamine 300mL, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) to the reactor ) 0.07g, condensed and refluxed at 90°C for 4h; then cooled the reactor to 20°C, added 100mL chitin aqueous dispersion to the system, reacted for 4h, filtered and washed the product 3 times, and freeze-dried at -50°C for 24h , to obtain chitin-modified graphene airgel.

[0028] (2) Preparation of indoor la...

Embodiment 2

[0033] (1) Preparation of chitin-modified graphene airgel.

[0034] a. Add 1 g of graphite oxide to a beaker filled with 300 mL of deionized water, and process it in an ultrasonic cell pulverizer for 30 min with an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution.

[0035] b. Add 10 g of chitin to a beaker filled with 100 mL of deionized water, mechanically stir and disperse for 1.5 h at a stirring speed of 180 rpm to obtain a chitin aqueous dispersion.

[0036] c. Add 300mL graphene oxide aqueous solution to the reactor, then add ethylenediamine 300mL, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) to the reactor ) 0.07g, condensed and refluxed at 90°C for 4h; then cooled the reactor to 20°C, added 100mL chitin aqueous dispersion to the system, reacted for 4h, filtered and washed the product 3 times, and freeze-dried at -50°C for 24h , to obtain chitin-modified graphene airgel.

[0037] (2) Preparation of indoor latex paint that ...

Embodiment 3

[0042] (1) Preparation of chitin-modified graphene airgel.

[0043] a. Add 1 g of graphite oxide to a beaker filled with 300 mL of deionized water, and process it in an ultrasonic cell pulverizer for 30 min with an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution.

[0044] b. Add 10 g of chitin to a beaker filled with 100 mL of deionized water, mechanically stir and disperse for 1.5 h at a stirring speed of 180 rpm to obtain a chitin aqueous dispersion.

[0045]c. Add 300mL graphene oxide aqueous solution to the reactor, then add ethylenediamine 300mL, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) to the reactor ) 0.07g, condensed and refluxed at 90°C for 4h; then cooled the reactor to 20°C, added 100mL chitin aqueous dispersion to the system, reacted for 4h, filtered and washed the product 3 times, and freeze-dried at -50°C for 24h , to obtain chitin-modified graphene airgel.

[0046] (2) Preparation of indoor latex paint that a...

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Abstract

The invention belongs to the field of chemical paint, and in particular relates to a preparation method of indoor emulsion paint capable of adsorbing and removing formaldehyde. The preparation methodparticularly comprises the following steps: 1, preparing chitin modified graphene aerogel; 2, preparing the indoor emulsion paint capable of adsorbing and removing the formaldehyde. The indoor emulsion paint prepared by the method has double functions of physical adsorption and chemical removal and has remarkable advantages of large formaldehyde adsorption quantity, high formaldehyde removal efficiency after adsorption and the like.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to a preparation method of indoor latex paint which absorbs and removes formaldehyde. [0002] technical background [0003] With the development of social economy and the improvement of people's living standards, ordinary people pay more and more attention to their health, especially the environmental protection requirements for the living environment are getting higher and higher. In interior decoration, people often choose artificial boards such as particle boards and composite boards. Among them, adhesives are needed in the preparation of artificial boards, and adhesives often contain unreacted free formaldehyde, which is also the main source of formaldehyde pollution in indoor air. [0004] Formaldehyde is a moderately toxic substance that is very harmful to human health; its effects are mainly manifested in abnormal sense of smell, irritation, allergy, abnormal lung function, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/02C09D7/61
CPCC08K2003/2241C08K2003/2296C08K2201/011C09D5/024C09D133/04C08L83/04C08K13/06C08K9/08C08K7/24C08K3/22
Inventor 史胜南吕会勇葛晶王飞高萌
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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