A kind of red phosphorus micropowder aqueous suspension flame retardant and its preparation method and application

A water-based suspension and flame retardant technology, applied in textiles and papermaking, fire-resistant coatings, fiber treatment, etc., can solve the problems of difficult dispersion and difficult addition in large quantities, and achieve uniform treatment and dispersion, easy addition, and low odor effects

Active Publication Date: 2017-09-12
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a red phosphorus micropowder aqueous suspension flame retardant and its preparation method in view of the problem that the existing red phosphorus micropowder is not easy to disperse and is difficult to add in a large amount when it is used for coating, coating and fabric flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A, in the red phosphorus micropowder of 20g, particle diameter 50 μ m, grind after adding 0.5g acrylate copolymer ammonium salt solution and 2g water, cause the surface of red phosphorus micropowder to evenly cover one deck wetting dispersant;

[0028] B. Transfer the red phosphorus micropowder covered with a wetting dispersant to a plastic cup after grinding in step A, add 78g of water, and disperse for 30min at 5000rpm with a high-speed shear emulsifying disperser;

[0029] C. Add 0.5 g of modified urea solution to the red phosphorus micropowder solution dispersed in step B, and continue to disperse at 3000 rpm for 10 minutes to obtain the red phosphorus micropowder aqueous suspension flame retardant product.

[0030] The properties of the red phosphorus micropowder aqueous suspension flame retardant are as follows:

[0031] Viscosity: 10cp, low odor, suspension, storage time 6 months, thixotropic when stored for a long time, it becomes a flowable liquid after slight ...

Embodiment 2

[0033] A, in the red phosphorus micropowder of 100g, particle diameter 100 μ m, grind after adding 3g anionic polyfunctional polymer alcohol ammonium salt solution and 5g water, cause the surface of red phosphorus micropowder to evenly cover one deck wetting dispersant;

[0034] B. Transfer the red phosphorus micropowder covered with a layer of wetting dispersant after grinding in step A into a plastic cup, add 95g of water, and then use a high-speed shear emulsifying disperser at 5000rpm to disperse for 30min;

[0035] C. Add 2.5 g of modified urea solution to the red phosphorus micropowder solution dispersed in step B, and continue to disperse at 5000 rpm for 5 minutes to obtain the red phosphorus micropowder aqueous suspension flame retardant product.

[0036] The properties of the red phosphorus micropowder aqueous suspension flame retardant are as follows:

[0037] Viscosity: 20cp, low odor, suspension, storage time 6 months, thixotropic when stored for a long time, it ca...

Embodiment 3

[0039] A, in the red phosphorus micropowder of 100g, particle diameter 50 μ m, grind after adding 2g acrylate copolymer ammonium salt solution and 8 water, cause the surface of red phosphorus micropowder to evenly cover one deck wetting dispersant;

[0040] B. Transfer the red phosphorus micropowder covered with a wetting dispersant to a plastic cup after grinding in step A, add 90g of water, and disperse for 30min at 5000rpm with a high-speed shear emulsifying disperser;

[0041]C. Add 2.5g modified urea solution to the red phosphorus micropowder solution dispersed in step B, and continue to disperse at 3000rpm for 10min, then add 0.2g polyacrylamide, disperse at 3000rpm for 2min to obtain red phosphorus micropowder aqueous suspension Flame retardant products.

[0042] The properties of the red phosphorus micropowder aqueous suspension flame retardant are as follows:

[0043] Viscosity: 20cp, low odor, suspension, storage time 6 months, thixotropic when stored for a long tim...

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Abstract

Disclosed are a flame retardant of red phosphorus micro powder in aqueous suspension and manufacturing method thereof. The manufacturing method comprises the steps of: adding a wetting and dispersing agent and an appropriate amount of water into red phosphorus micro powder and performing a grinding operation; adding water into the wet ground red phosphorus micro powder to perform a dispersing operation; and adding an anti-settling agent into the dispersion of red phosphorus micro powder and dispersing the same continuously until uniform to obtain a flame retardant of red phosphorus micro powder in aqueous suspension, wherein the red phosphorus content is 20-60%, and the viscosity is 10-500 cp, usually 10-100 cp. The aqueous suspension has good flowability and thixotropy, and the flame-retardant effect thereof on a material treated thereby is good and uniform; meanwhile, the suspension has good stability, low odor, and a wide variety of applications in polymers, paints, coatings and fabrics requiring flame retardance.

Description

technical field [0001] The invention relates to a red phosphorus flame retardant, more specifically, the invention relates to a red phosphorus micropowder aqueous suspension flame retardant and a preparation method thereof, belonging to the technical field of flame retardant preparations and preparations. Background technique [0002] Red phosphorus is a high-efficiency flame retardant. Red phosphorus is easily oxidized into phosphorus oxide when heated. In the presence of water, it is quickly converted into phosphoric acid, metaphosphoric acid, polyphosphoric acid, etc., covering the surface of the combustible and protecting it. And shielding effect, mixed phosphoric acid has a strong dehydration and carbonization effect on polymers at high temperatures, and can form a stable glass carbonization layer on the surface of the burnt object, further enhancing the flame retardant effect. Adding red phosphorus to polymer foaming materials, epoxy and unsaturated polyester coatings,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/02C08K9/00C08K3/02C08L7/00C09D5/18D06M11/69
CPCC08K3/02C08K9/04
Inventor 郭岳李谦
Owner CHINA BLUESTAR CHENGRAND CO LTD
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