Solid chlorine dioxide sustained-release material and preparation method thereof

A chlorine dioxide, slow-release material technology, applied in the fields of botanical equipment and methods, oxidized water/sewage treatment, chemicals for biological control, etc., can solve the problem of inconvenient gas storage, transportation and use, poor air purification effect problems such as good quality and danger, to achieve stable and reliable production process, excellent air purification effect, and the effect of removing air pollutants

Inactive Publication Date: 2018-11-06
SUZHOU SASENS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chlorine dioxide was originally used for drinking water disinfection and food preservation, however, the use of chlorine dioxide in liquid environments limits its application fields
The use of chlorine dioxide gas has the following difficulties: ① high-concentration chlorine dioxide gas is dangerous, easy to explode, and can cause death by biological contact or inhala

Method used

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Examples

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preparation example Construction

[0033] The present invention also provides a preparation method of solid chlorine dioxide slow-release material, the steps comprising:

[0034] 1. Preparation of the silica airgel micropowder:

[0035] 1) Prepare a mixed solution of ethyl orthosilicate, hydrochloric acid, water, and ethanol solution, and reflux at 120°C for 2-4 hours to obtain a prepolymer; the concentration of hydrochloric acid is 1mol / L, and ethyl orthosilicate, hydrochloric acid, water , The volume ratio of ethanol solution is 10:0.01-0.5:0.5-5:200-500;

[0036] 2) Take the prepolymer and dilute it with n-hexane, add ammonia water dropwise under stirring conditions at room temperature, and then let it stand for 2 hours to obtain a gel; the concentration of ammonia water is 1mol / L, and the volume ratio of prepolymer, n-hexane and ammonia water is 100:500-1000:1-5;

[0037] 3) Stir again to pulverize the gel, replace it with n-hexane solvent, and dry it under normal pressure at 120-150° C. to obtain silica ...

Embodiment 1

[0044] A solid chlorine dioxide slow-release material, its raw materials include: sodium chlorite, solid acid, carrier material, coating agent and auxiliary agent; the carrier material is silica airgel micropowder; the auxiliary agent includes Accelerators, stabilizers and binders. The accelerator is one or more of anhydrous ferric chloride, potassium persulfate, sodium dichloroisocyanurate, glucose, potassium permanganate, and sodium chloride. The solid acid is one of citric acid, sulfamic acid, tartaric acid, oxalic acid, sodium bisulfate; the coating agent is gelatin, acacia powder, rosin, paraffin, polyvinylpyrrolidone, acrylic acid and methacrylic acid One of the copolymers; the stabilizer is anhydrous calcium chloride or anhydrous magnesium sulfate, and the composition of the binder includes silica gel. The mass ratio of described sodium chlorite, solid acid, carrier material, coating agent and auxiliary agent is 10:15:10:10:40; The mass ratio of described accelerator, ...

Embodiment 2

[0054] A solid chlorine dioxide slow-release material, its raw materials include: sodium chlorite, solid acid, carrier material, coating agent and auxiliary agent; the carrier material is silica airgel micropowder; the auxiliary agent includes Accelerators, stabilizers and binders. The accelerator is one or more of anhydrous ferric chloride, potassium persulfate, sodium dichloroisocyanurate, glucose, potassium permanganate, and sodium chloride. The solid acid is one of citric acid, sulfamic acid, tartaric acid, oxalic acid, sodium bisulfate; the coating agent is gelatin, acacia powder, rosin, paraffin, polyvinylpyrrolidone, acrylic acid and methacrylic acid One of the copolymers; the stabilizer is anhydrous calcium chloride or anhydrous magnesium sulfate, and the composition of the binder includes silica gel. The mass ratio of described sodium chlorite, solid acid, carrier material, coating agent and auxiliary agent is 10:15:15:12:50; The mass ratio of described promotor, sta...

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PUM

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Abstract

The invention discloses a solid chlorine dioxide sustained-release material and a preparation method thereof, raw materials comprise sodium chlorite, a solid acid, a carrier material, a coating agentand auxiliary agents; the carrier material is silicon dioxide aerogel micro powder; and the auxiliary agents include an accelerator, a stabilizer, and a binder. The solid chlorine dioxide sustained-release material can realize a controllable release rate of chlorine dioxide by silicon dioxide aerogel micro powder loading, polymer coating and accelerator adjustment, and has more excellent air purification effect; the safety, long-term stability and stability of the chlorine dioxide released by the solid chlorine dioxide sustained-release material can be realized by controlling of the mass transfer of a chemical reaction process for producing the chlorine dioxide; the solid chlorine dioxide sustained-release material product prepared by the method is convenient to use, can effectively removeair pollutants (such as formaldehyde), deodorizes (H2S), and sterilizes, air is purified, and the solid chlorine dioxide sustained-release material product is safe and environmentally-friendly, is stable and reliable in production process, high in efficiency and low in cost, and has a good market prospect.

Description

technical field [0001] The invention relates to the field of chlorine dioxide slow-release materials, in particular to a solid chlorine dioxide slow-release material and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, maintaining a suitable living environment has become particularly important. Indoor air quality is closely related to people's life and health. Chlorine dioxide is an internationally recognized safe, non-toxic and green disinfectant. Utilizing its strong oxidizing properties, harmful substances in the air such as formaldehyde, odor, bacteria and other substances can be converted into non-toxic products through chemical reactions, so chlorine dioxide has a good application prospect in the field of air purification. [0003] Chlorine dioxide was originally used for drinking water disinfection and food preservation, however, the use of chlorine dioxide in liquid environments limits its application fi...

Claims

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Application Information

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IPC IPC(8): C02F1/76A01N25/08A01N25/18A01N59/00A01P1/00A01P3/00
CPCA01N25/08A01N25/18A01N59/00C02F1/76
Inventor 周颂李金泽刘艳周恒宋佳伟
Owner SUZHOU SASENS CO LTD
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