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Preparation method of antimony pentoxide colloid for flame retardance of textile fabric

A technology of antimony pentoxide and antimony trioxide, applied in sol preparation, chemical instruments and methods, colloid chemistry, etc., can solve the problems of difficult dispersion, emulsification, and easy aggregation of powder, and achieve good dispersibility, excellent The effect of cast rate

Pending Publication Date: 2021-08-06
海宁恒爱新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the powder is easy to aggregate and difficult to disperse, there will be precipitation; while the water-soluble antimony pentoxide colloidal solution has good dispersibility, but when used in an organic system, it will cause delamination and cracking due to poor oil-water miscibility. Foaming, emulsification and other phenomena will affect the use effect

Method used

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  • Preparation method of antimony pentoxide colloid for flame retardance of textile fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A preparation method of antimony pentoxide colloid for flame retardancy of textiles, specifically comprising the following steps:

[0020] S1: Mix the antimony trioxide powder and sodium peroxide evenly, then add it into the container, add distilled water dropwise, raise the temperature to 90°C after the dropwise addition, condense and reflux and stir for 1 hour to obtain the antimony pentoxide sol, in which The mass ratio of antimony powder to peroxide is 1.55:1; the rate of adding distilled water is 0.15mL / s for 6 minutes; then add dropwise at a rate of 0.36mL / s to the required solution amount.

[0021] S2: Heating, evaporating, and concentrating the antimony pentoxide sol in step S1 in a water bath at 95°C to a water content of 40%, to obtain antimony pentoxide powder, which is dispersed in sodium dodecylbenzenesulfonate and amine In the aqueous solution, after stirring at room temperature for 2h, the modified antimony pentoxide sol was obtained by suction filtration...

Embodiment 2

[0025] A preparation method of antimony pentoxide colloid for flame retardancy of textiles, specifically comprising the following steps:

[0026] S1: Mix antimony trioxide powder and potassium peroxide evenly, then add it into the container, add distilled water dropwise, heat up to 100°C after the dropwise addition, condense and reflux and stir for 2 hours to obtain antimony pentoxide sol, in which The mass ratio of antimony powder to peroxide is 1.75:1.26; the rate of adding distilled water is 0.20mL / s, dropwise for 10min; then add dropwise at a rate of 0.4mL / s to the required solution amount.

[0027] S2: Heating, evaporating, and concentrating the antimony pentoxide sol in step S1 in a water bath at 100°C to a water content of 45%, to obtain antimony pentoxide powder, which is dispersed in sodium dodecylbenzenesulfonate and amine After stirring for 5 hours at room temperature, the modified antimony pentoxide sol was obtained by suction filtration, wherein the mass ratio of ...

Embodiment 3

[0031] A preparation method of antimony pentoxide colloid for flame retardancy of textiles, specifically comprising the following steps:

[0032] S1: Mix antimony trioxide powder and sodium peroxide evenly, then add it into the container, add distilled water dropwise, heat up to 95°C after the dropwise addition, condense and reflux and stir for 1.5 hours to obtain antimony pentoxide sol, in which The mass ratio of diantimony powder to peroxide is 1.65:1.16; the rate of adding distilled water is 0.17mL / s for 8 minutes; then add dropwise at a rate of 0.38mL / s to the required solution amount.

[0033] S2: Heating, evaporating, and concentrating the antimony pentoxide sol in step S1 in a water bath at 98°C to a water content of 42%, to obtain antimony pentoxide powder, which is dispersed in sodium dodecylbenzenesulfonate and amine In the aqueous solution, after stirring at room temperature for 3h, the modified antimony pentoxide sol was obtained by suction filtration, wherein the ...

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Abstract

The invention discloses a preparation method of antimony pentoxide colloid for flame retardance of a textile fabric, wherein the preparation method comprises the steps: uniformly mixing antimony trioxide powder and peroxide, adding into a container, dropwise adding distilled water, heating to 90-100 DEG C after dropwise adding, and condensing, refluxing and stirring for 1-2 hours to obtain antimony pentoxide sol; S2, heating, evaporating and concentrating the antimony pentoxide sol in the step S1 under a water bath condition of 95-100 DEG C until the water content is 40-45% to obtain antimony pentoxide powder, dispersing the antimony pentoxide powder in an aqueous solution of sodium dodecyl benzene sulfonate and benzylamine, stirring at room temperature for 2-5 hours, and performing suction filtration to obtain modified antimony pentoxide sol; and removing sodium ions or potassium ions in the antimony pentoxide sol in the step S2 by using cation exchange resin at 30-35 DEG C; and S3, heating the antimony pentoxide sol obtained in the step S3 at 95-98 DEG C, evaporating, concentrating to 46-48%, adding lactic acid into the concentrated sol, stirring for 30-60 minutes, heating in a water bath at 50-70 DEG C, dropwise adding an ethanol solution, and stirring for 1-2 hours after dropwise adding to obtain the antimony pentoxide sol.

Description

technical field [0001] The invention belongs to the technical field of antimony pentoxide colloid for flame-retardant textiles, and in particular relates to a preparation method of antimony pentoxide colloid for flame-retardant textiles. Background technique [0002] Antimony pentoxide colloid has a wide range of uses due to its large specific surface area, high thermal stability, strong covering ability and transparency and many other advantages. In addition, antimony pentoxide colloid is widely used as a flame retardant for plastics and fibers due to its small particle size, generally 1-100nm, high transparency, good thermal stability, low smoke generation, and low toxicity. The traditional methods for preparing antimony pentoxide organosol can be roughly divided into two types: direct method and indirect method. The direct method uses trivalent antimony compounds as raw materials and controls certain conditions to directly prepare antimony pentoxide organosol. US Patent...

Claims

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Application Information

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IPC IPC(8): B01J13/00D06M11/47
CPCB01J13/0004D06M11/47D06M2200/30
Inventor 宋伟
Owner 海宁恒爱新材料有限公司
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