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Preparation method of microcapsule fire retardant

A technology of flame retardant and microcapsule, which is applied in the field of preparation of microcapsule flame retardant, can solve the problems of low flame retardant efficiency, etc., and achieve the effects of improving flame retardant performance, good adsorption effect, and decreasing smoke generating ability.

Inactive Publication Date: 2019-01-11
黄旭东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: Aiming at the problem of low flame retardant efficiency of the existing single flame retardant, a preparation method of a microcapsule flame retardant is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Take a zeolite molecular sieve with a particle size of 200 mesh and dry it to a constant weight at a temperature of 60°C to obtain a dry zeolite molecular sieve. In parts by weight, weigh 20 parts of a dry zeolite molecular sieve, 6 parts of ammonium polyphosphate, and 5 parts of melamine phosphoric acid. Salt, 30 parts of magnesium sulfate heptahydrate, 80 parts of deionized water, 1 part of dispersant, 20 parts of mass fraction are 10% sodium hydroxide solution, dry zeolite molecular sieve, magnesium sulfate heptahydrate, deionized water and dispersant are mixed, After ultrasonic dispersion at room temperature for 10 minutes, heat and stir at 70°C for 1 hour to obtain a mixed solution, sequentially add 10% sodium hydroxide solution, ammonium polyphosphate and melamine phosphate, and stir for 2 hours to obtain a blended solution. Filter the blend to obtain filter residue, wash with deionized water for 3 times and then dry to obtain the modified flame retardant; in parts...

example 2

[0023]Take a zeolite molecular sieve with a particle size of 250 mesh and dry it to a constant weight at a temperature of 70°C to obtain a dry zeolite molecular sieve. In parts by weight, weigh 24 parts of dry zeolite molecular sieve, 8 parts of ammonium polyphosphate, and 6 parts of melamine phosphoric acid. Salt, 40 parts of magnesium sulfate heptahydrate, 90 parts of deionized water, 5 parts of dispersant, 25 parts of mass fraction are 10% sodium hydroxide solution, dry zeolite molecular sieve, magnesium sulfate heptahydrate, deionized water and dispersant are mixed, After ultrasonically dispersing at room temperature for 15 minutes, heat and stir at 75°C for 1 hour to obtain a mixed solution, sequentially add 10% sodium hydroxide solution, ammonium polyphosphate and melamine phosphate, and stir for 2 hours to obtain a blended solution. Filter the blend to obtain a filter residue, wash with deionized water for 4 times and then dry to obtain the modified flame retardant; in p...

example 3

[0025] Take a zeolite molecular sieve with a particle size of 300 mesh and dry it to a constant weight at a temperature of 80° C. to obtain a dry zeolite molecular sieve. In parts by weight, weigh 28 parts of a dry zeolite molecular sieve, 10 parts of ammonium polyphosphate, and 8 parts of melamine phosphoric acid. Salt, 50 parts of magnesium sulfate heptahydrate, 100 parts of deionized water, 10 parts of dispersant, 30 parts of mass fraction are 10% sodium hydroxide solution, dry zeolite molecular sieve, magnesium sulfate heptahydrate, deionized water and dispersant are mixed, After ultrasonically dispersing at room temperature for 20 minutes, heat and stir at 80°C for 2 hours to obtain a mixed solution, sequentially add 10% sodium hydroxide solution, ammonium polyphosphate and melamine phosphate, and stir for 3 hours to obtain a blended solution. Filter the blend to obtain filter residue, wash with deionized water for 5 times and then dry to obtain the modified flame retardan...

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Abstract

The invention relates to a preparation method of a microcapsule fire retardant, and belongs to the technical field of fire retardant. According to the preparation method, magnesium hydroxide, ammoniumpolyphosphate, and melamine phosphate are mixed for coating of zeolite molecular sieve, wherein melamine phosphate is capable of achieving flame resistance at a condensed phase and a gas phase, a large amount of latent heat is absorbed through sublimation, volatilization, and evaporation, inert gas is generated, and gas state substances such as MA steam, water vapor, N2, CO2, and NH4 are generated, the concentrations of oxygen and combustible gas at a combustion zone are reduced through dilution, and at the same time, coating of material surface is realized; charing is promoted, formation ofmolten drops from some polymers is promoted, so that a part heat energy is taken away, and combustion reaction is terminated; the zeolite molecular sieve is a crystal aluminosilicate formed by SiO4 and Al2O3 tetrahedrons through oxygen bridges; not only uniform pore structures, and large specific surface area, but also extremely high surface polarity is achieved. The zeolite molecular sieve possesses excellent absorption effect and certain catalyst effect, and flame resistance of the microcapsule fire retardant is improved.

Description

technical field [0001] The invention relates to a preparation method of a microcapsule flame retardant, belonging to the technical field of flame retardants. Background technique [0002] PVC membrane structural material is based on high-strength fabrics such as polyester fabrics, and is evenly coated with PVC coating materials on both sides. It has the advantages of low cost, excellent toughness, and easy processing, and is widely used in construction, sports, leisure and other fields. . Generally, a large amount of plasticizer needs to be added during the processing of flexible PVC coating film materials to improve the softness and processing performance of samples, and plasticizers are generally flammable, which not only greatly reduces the flame retardancy of PVC film materials, but also And it will limit the wide application of such materials. Flexible PVC film materials will emit a large amount of toxic and harmful black smoke during combustion, which threatens the s...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K7/26C08K3/32C08K5/3492C08K9/10C08K7/24C08L27/06
CPCC08K3/32C08K5/34928C08K7/24C08K7/26C08K9/10C08K13/06C08K2003/323C08L2201/02C08L27/06
Inventor 黄旭东张鑫骆兵建
Owner 黄旭东
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