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Preparation method and application of boron nitride and polyaniline composite material

A composite material and boron nitride technology, which is applied in the field of preparation of boron nitride and polyaniline composite materials, can solve the problems of adsorption capacity of adsorption materials, hidden dangers of secondary pollution, complicated preparation methods, and reduced effect, and achieve good formaldehyde adsorption. Effect, improvement of adsorption effect, effect of simple preparation method

Pending Publication Date: 2022-03-25
深圳市绿蔓科技有限公司
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Problems solved by technology

[0003] At present, there are many ways to remove gaseous formaldehyde, such as: adsorption method, chemical absorption method, photocatalytic oxidation method, etc. Usually, the most widely used methods are physical adsorption method and catalytic oxidation method. Physical adsorption is to eliminate formaldehyde gas at room temperature. The simplest and most effective method, but its wide application is mainly limited by the adsorption capacity of the adsorption material and the hidden danger of secondary pollution, but most of the existing formaldehyde adsorption materials use more complex materials and formulas, and the effect of adsorbing formaldehyde is poor , especially after a period of use, the effect of adsorption and removal of formaldehyde decreases, and it is difficult to ensure the removal rate of formaldehyde
[0004] Chinese Patent No. CN108479721A discloses a formaldehyde adsorbing material and its application. The material is prepared by the following method: a) soaking straw fiber plate scraps in oxalic acid solution and drying; b) pickling straw fiber plate powder, modified The agent and soybean protein adhesive were mixed and granulated, impregnated in ZnCl 2 In the solution, suction filter and dry the product; then carbonize, wash and dry; c) use soybean derivatives to prepare soybean protein hydrolyzate; d) soak the product of step b) in soybean protein hydrolyzate, suction filter and dry , that is to obtain the formaldehyde adsorption material, although the microporous material can effectively adsorb formaldehyde, the preparation method is relatively complicated, and it is difficult to effectively adsorb formaldehyde for a long time, so it needs to be improved
[0005] Chinese Patent No. CN113600144A discloses a method for preparing a formaldehyde adsorbing material. The preparation method of the formaldehyde adsorbing material includes: step ① placing the silica gel powder in a plasma reaction chamber for processing, and taking it out after processing; ② dissolving part of polyethyleneimine in a disperse evenly in ionized water, add amine source and disperse evenly; form a mixed liquid; ③ add silica gel powder after plasma treatment to the mixed liquid, impregnate and disperse and filter, take effectively impregnated silica gel powder and dry it to obtain Silica gel powder with formaldehyde adsorption function; ④ mix the silica gel powder obtained in step ③ with carboxymethyl cellulose and water, granulate and dry to obtain silica gel particles. Although the formaldehyde adsorption material has a good adsorption effect, the preparation Materials and methods are complex and need to be improved

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  • Preparation method and application of boron nitride and polyaniline composite material

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preparation example Construction

[0027] see figure 1 , the invention provides a kind of preparation method of boron nitride, polyaniline composite material, comprises the following steps:

[0028] S1: set B 2 o 3 and CO(NH 2 ) 2 Add to 10-20mL methanol and stir until a transparent solution is formed, then stir at room temperature for 24 hours, and white crystals are precipitated;

[0029] S2: Then put the white crystal into the quartz boat after being ground, and put it in a chemical vapor deposition (CVD) tube furnace, and heat it to the experimental set temperature at a rate of 5 °C / min. 3 Maintain the temperature in the atmosphere for 3h, and then naturally cool to room temperature under the protection of an ammonia atmosphere to obtain a boron nitride precursor;

[0030] S3: Disperse the boron nitride precursor in N,N-dimethylformamide (DMF), sonicate at room temperature for 2h to obtain a boron nitride precursor with good dispersion in DMF, and then mix the above The solution was put into a polytet...

Embodiment 1

[0035] A preparation method of boron nitride and polyaniline composite material, comprising the following steps:

[0036] S1: set B 2 o 3 and CO(NH 2 ) 2 Add it into 10mL methanol at a molar ratio of 1:8 and stir until a transparent solution is formed, then stir at room temperature for 24 hours, and white crystals are precipitated;

[0037] S2: Then put the white crystal into the quartz boat after being ground, and put it in a chemical vapor deposition (CVD) tube furnace, and heat it to the experimental set temperature at a rate of 5 °C / min. 3 Maintain the temperature in the atmosphere for 3h, and then naturally cool to room temperature under the protection of an ammonia atmosphere to obtain a boron nitride precursor;

[0038] S3: Disperse the boron nitride precursor in N,N-dimethylformamide (DMF), sonicate at room temperature for 2h to obtain a boron nitride precursor with good dispersion in DMF, and then mix the above The solution was put into a polytetrafluoroethylene ...

Embodiment 2

[0042] S1: set B 2 o 3 and CO(NH 2 ) 2 Add it into 15mL of methanol at a molar ratio of 1:10 and stir until a transparent solution is formed, then stir at room temperature for 24 hours, and white crystals are precipitated;

[0043] S2: Then put the white crystal into the quartz boat after being ground, and put it in a chemical vapor deposition (CVD) tube furnace, and heat it to the experimental set temperature at a rate of 5 °C / min. 3 Maintain the temperature in the atmosphere for 3h, and then naturally cool to room temperature under the protection of an ammonia atmosphere to obtain a boron nitride precursor;

[0044] S3: Disperse the boron nitride precursor in N,N-dimethylformamide (DMF), sonicate at room temperature for 2h to obtain a boron nitride precursor with good dispersion in DMF, and then mix the above The solution was put into a polytetrafluoroethylene stainless steel high-pressure reaction kettle, kept at 180°C for 12 hours, and naturally cooled to room temperat...

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Abstract

The invention provides a preparation method and application of a boron nitride and polyaniline composite material, and relates to the technical field of material chemistry, and the preparation method comprises the following steps: S1, adding B2O3 and CO (NH2) 2 into 10-20 mL of methanol, stirring to form a transparent solution, then stirring at room temperature for 24 hours, and precipitating to obtain white crystals. According to the preparation method, porous boron nitride is dispersed in the hydrochloric acid solution of aniline, the initiator is added under the ice bath, the reaction is performed for a certain time, so that the boron nitride and polyaniline composite material is prepared, and the hydrochloric acid solution of aniline is added to react with the initiator, so that the adsorption effect on formaldehyde is effectively improved; the prepared boron nitride and polyaniline composite material has a good formaldehyde adsorption effect, the preparation method is simple, and the composite material has the advantages of large formaldehyde adsorption capacity and stable properties, so that the composite material can still have a good formaldehyde adsorption effect after long-term use, and the adsorption rate of formaldehyde adsorption is ensured.

Description

technical field [0001] The invention relates to the technical field of material chemistry, in particular to a preparation method and application of boron nitride and polyaniline composite materials. Background technique [0002] Formaldehyde has a wide range of applications, mainly used in the production of plywood, plastic, resin, rubber, adhesives, foam plastics, and paint in industrial production. In addition, various types of furniture made of wood-based panels synthesized with urea-formaldehyde resin , ceilings, wall panels, etc.; foamed plastic strips used for building heat insulation and cold protection materials are aged and deteriorated under high temperature light and high temperature, and formaldehyde is released from compounds; cosmetics, disinfectants, preservatives, printing inks, cleaning agents, insecticides Formaldehyde may be brought by chemicals, paper, etc.; interior decoration materials such as car seat covers, seat cushions, and roof linings, especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K7/24B01D53/02C08G73/02
CPCC08K7/24B01D53/02C08G73/0266B01D2259/4508B01D2257/70B01D2253/202B01D2253/10C08L79/02
Inventor 张超红
Owner 深圳市绿蔓科技有限公司