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Hydrolyzed gelatin and diatomite covalently bonded aldehyde-removing composite material and preparation method thereof

A technology of hydrolyzing gelatin and covalent bonding, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems of easy loss of active components and achieve long-lasting and good aldehyde removal effects. Effect

Active Publication Date: 2020-10-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above patents all have the problem that the active component is easily lost due to physical adsorption between the aldehyde removal component and the matrix diatomite

Method used

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  • Hydrolyzed gelatin and diatomite covalently bonded aldehyde-removing composite material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0014] The aldehyde-removing composite material covalently bonded with hydrolyzed gelatin and diatomite consists of the following components in parts by weight:

[0015] (A) 100 parts of diatomaceous earth, and

[0016] (B) 10 parts of hydrolyzed gelatin with a molecular weight of 2000.

[0017] The preparation method of the above-mentioned long-acting aldehyde-removing composite material: add 10 parts of hydrolyzed gelatin to 100 parts of water and stir at 20°C for 0.5h to dissolve, then add 100 parts of diatomaceous earth and continue stirring for 0.5h, and dry at 70°C; then dry The final diatomite containing hydrolyzed gelatin is dispersed in 200 parts of N,N-dimethylformamide, and 1 part of catalyst 4-dimethylaminopyridine and 10 parts of dehydrating agent 1-(3-dimethylaminopropyl )-3-Ethylcarbodiimide hydrochloride, reacted at 90°C for 10h. Cool down, filter, wash with ethanol and dry at 70°C, and grind to obtain a aldehyde-removing composite material in which hydrolyze...

Embodiment 2

[0019] The aldehyde-removing composite material covalently bonded with hydrolyzed gelatin and diatomite consists of the following components in parts by weight:

[0020] (A) 100 parts of diatomaceous earth, and

[0021] (B) 20 parts of hydrolyzed gelatin with a molecular weight of 3000.

[0022] The preparation method of the above-mentioned long-acting aldehyde-removing composite material: add 20 parts of hydrolyzed gelatin to 100 parts of water and stir at 30°C for 1 hour to dissolve, then add 100 parts of diatomaceous earth and continue stirring for 0.5 hours, and dry at 80°C; Diatomaceous earth containing hydrolyzed gelatin is dispersed in 200 parts of N,N-dimethylformamide, adding 2 parts of catalyst 4-dimethylaminopyridine and 20 parts of dehydrating agent 1-(3-dimethylaminopropyl) -3-Ethylcarbodiimide hydrochloride, react at 100°C for 20h. Cool down, filter, wash with ethanol and dry at 80°C, and grind to obtain a aldehyde-removing composite material chemically covalen...

Embodiment 3

[0024] The aldehyde-removing composite material covalently bonded with hydrolyzed gelatin and diatomite consists of the following components in parts by weight:

[0025] (A) 100 parts of diatomaceous earth, and

[0026] (B) 30 parts of hydrolyzed gelatin with a molecular weight of 4000.

[0027] The preparation method of the above-mentioned long-acting aldehyde-removing composite material: add hydrolyzed gelatin to 100 parts of water and stir at 40°C for 2 hours to dissolve it, then add 100 parts of diatomaceous earth to continue stirring for 1 hour, and dry at 80°C; then the dried hydrolyzed gelatin Diatomaceous earth of glue is dispersed in 200 parts of N,N-dimethylformamide, 5 parts of catalyst 4-dimethylaminopyridine and 30 parts of dehydrating agent 1-(3-dimethylaminopropyl)-3-ethane Carbodiimide hydrochloride, reacted at 110°C for 30h. Cool down, filter, wash with ethanol and dry at 90°C, and grind to obtain a aldehyde-removing composite material in which hydrolyzed ge...

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Abstract

The invention relates to a hydrolyzed gelatin and kieselguhr covalent bonded aldehyde-removal composite material and a preparation method thereof. The aldehyde-removal composite material comprises 100parts by weight of kieselguhr and 2-40 parts by weight of hydrolyzed gelatin. According to the aldehyde-removal composite material provided by the invention, an aldehyde-removal component, namely thehydrolyzed gelatin, and a carrier, namely the kieselguhr, are subjected to chemical covalent bonding, formaldehyde can be adsorbed by the porous kieselguhr, moreover, the covalent bonded hydrolyzed gelatin on the surface of the kieselguhr can be reacted with the formaldehyde, and then with the combination of physical adsorption and chemical aldehyde removal, the composite material is good in aldehyde removal effect and long-lasting in effect.

Description

technical field [0001] The invention discloses a material for purifying formaldehyde, and relates to a formaldehyde-removing composite material covalently bonded with hydrolyzed gelatin and diatomite and a preparation method thereof. Background technique [0002] In building decoration, man-made panels are widely used as the main materials for construction and interior decoration. These materials use a large amount of urea-formaldehyde resin as an adhesive during the production process, which will release formaldehyde to the surrounding environment. Formaldehyde is a kind of protoplasmic poison that destroys the protein of biological cells. It is a teratogenic and carcinogenic substance and poses a serious threat to human health. [0003] In order to solve the problem of indoor formaldehyde pollution and protect human health, researchers at home and abroad have invested a lot of energy in developing various formaldehyde-removing materials. There have been many patent report...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02B01D53/81B01D53/72
CPCB01D53/02B01D53/72B01D53/81B01D2253/106B01D2257/7022
Inventor 赵芸薛浩亮李涛涛王姗姗矫庆泽冯彩虹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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