A kind of formaldehyde scavenger and preparation method thereof

A formaldehyde scavenger and compound technology, applied in the field of air purification, can solve the problems of insufficient speed of decomposition of formaldehyde, high cost of preparation and raw materials, and great influence of photocatalyst light conditions, etc., to achieve strong formaldehyde degradation ability and mild application conditions Effect

Active Publication Date: 2021-12-14
郑州绿佳环保科技有限公司
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Problems solved by technology

However, catalysts that can effectively eliminate formaldehyde at room temperature are mostly noble metal catalysts, such as nano-cube CeO 2 Loaded Pd, its preparation and raw material costs are higher
Moreover, the photocatalyst is greatly affected by the light conditions, and the speed of decomposing formaldehyde is not fast enough.

Method used

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  • A kind of formaldehyde scavenger and preparation method thereof
  • A kind of formaldehyde scavenger and preparation method thereof
  • A kind of formaldehyde scavenger and preparation method thereof

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preparation example Construction

[0035] The embodiment of the present invention also relates to a preparation method of a formaldehyde scavenger, comprising the following steps: adding formaldehyde trapping agent and neutral silica sol into pure water, stirring evenly, adding triethanolamine and calcium sulfate, finally adding high molecular polymer, stirring evenly Then get the formaldehyde scavenger.

[0036] In a specific embodiment of the present invention, the preparation method of the formaldehyde scavenger comprises the following steps: take 1 / 2 volume of pure water, heat it to 28-30° C., and add the formulated amount of formaldehyde scavenger. After stirring for 20 to 30 minutes, add the formula amount of neutral silica sol. After stirring for 10 to 20 minutes, add the formula amount of triethanolamine and calcium sulfate. After stirring evenly, add the high-molecular polymer of formula quantity. Add the remaining amount of pure water and stir for 20 to 30 minutes to obtain a formaldehyde scavenger....

Embodiment 1

[0044] Preparation of High Molecular Polymers

[0045] (1) Add 60 parts by weight of water to 6 parts by weight of sodium p-styrene sulfonate and 1 part by weight of polyvinylpyrrolidone, stir evenly, add 2 parts by weight of acrylic acid, fully mix and let stand for 20 minutes, and fill it with nitrogen for 2 ~3 minutes. The reaction system was placed in a reaction box and heated for 15-20 minutes, and magnetic stirring was carried out while heating. After the temperature reached 40°C, the heating was stopped and the stirring was continued to obtain a mixed solution.

[0046] (2) Turn on the ultraviolet lamp to irradiate the above mixed solution, and the irradiation intensity is 5mW / cm 2. Glucose solution (obtained by dissolving 2 parts by weight of anhydrous glucose in 3.2 parts by weight of purified water) was added during the irradiation process to make the mixed solution undergo polymerization reaction. The reaction time is 10-13 hours.

[0047] (3) When the mixed s...

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Abstract

The invention relates to a formaldehyde scavenger and a preparation method thereof. The formaldehyde scavenger contains the following components in mass percentage: high molecular polymer 1%-5%, formaldehyde trapping agent 1%-5%, neutral silica sol 5%-15%, triethanolamine 0.5%-2% , calcium sulfate 0.01 to 1%, and the balance is pure water. Its application conditions are mild, and it has a strong ability to degrade formaldehyde at room temperature. The raw materials of the scavenger are relatively safe to the human body, and no secondary pollution will be generated during use. It can be sprayed directly in the air to eliminate free harmful gases in the air. It can also be sprayed on boards, furniture, wallpapers, and fabrics to eliminate free formaldehyde.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a formaldehyde scavenger and a preparation method of the formaldehyde scavenger. Background technique [0002] Formaldehyde, chemical formula HCHO or CH 2 O, with a molecular weight of 30.03, is also called formaldehyde. Colorless, irritating to human eyes and nose. The main harm of formaldehyde is the stimulation of skin and mucous membranes. When formaldehyde reaches a certain concentration indoors, people will feel uncomfortable, which can cause red eyes, itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, asthma, dermatitis, etc. Newly decorated rooms have higher levels of formaldehyde, which is the main cause of many diseases. The most common symptoms are eye irritation and headache, which can cause atopic dermatitis and asthma in severe cases. Because formaldehyde can react with protein to generate nitrogen methine compound, which can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01D53/02B01J20/045B01J20/103B01J20/22B01J20/26B01J20/30B01D2257/704B01D2257/708B01D2258/06
Inventor 马洪涛王超杰
Owner 郑州绿佳环保科技有限公司
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