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Method for preparing modified magnesium hydroxide flame retardant

A technology of magnesium hydroxide and flame retardant, which is applied in the treatment of dyed low-molecular organic compounds, dyed high-molecular organic compounds, and fibrous fillers. It can solve the problems of poor dispersion and compatibility, large particle size distribution, and product The problem of uneven quality can achieve the effect of good compatibility, low equipment requirements and good particle size dispersion

Active Publication Date: 2014-08-06
山东大耀特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the production of magnesium hydroxide flame retardants in China mainly faces different product quality, which is difficult to compare with foreign countries, and the product has a large particle size distribution, poor dispersion and compatibility, and its performance is still inferior to the currently used halogen-based and phosphorus-based flame retardants. agent

Method used

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  • Method for preparing modified magnesium hydroxide flame retardant
  • Method for preparing modified magnesium hydroxide flame retardant
  • Method for preparing modified magnesium hydroxide flame retardant

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1, a kind of preparation method of modified magnesium hydroxide flame retardant, this preparation method comprises the following steps:

[0038] (1) Use alkanolamide polyoxyethylene ether and sodium didodecylphenyl ether disulfonate as the main emulsifiers to prepare a composite emulsifier with an HLB value of 15;

[0039] (2) Dissolve 5g sodium lauryl sulfate and 8g triethanolamine in 61kg water to make a transparent solution;

[0040] (3) Add 86kg of oxidized polyethylene wax to the reactor, then add 32kg of compound emulsifier with an HLB value of 15, add 6kg of emulsifying aid, and then heat the reactor to 105°C to emulsify the oxidized polyethylene wax;

[0041] (4) After the oxidized polyethylene wax in (3) is melted, slowly add 61kg of a mixed aqueous solution of sodium lauryl sulfate and triethanolamine heated to 85°C, then seal it, and first stir at a speed of 75 rpm for 23 minutes , then stirred for 47 minutes at a speed of 186 rpm;

[0042] (5) S...

Embodiment 2

[0051] Example 2 , a preparation method of a modified magnesium hydroxide flame retardant, the preparation method comprising the following steps:

[0052] (1) Use fatty alcohol polyoxyethylene ether and sodium lauryl sulfate as the main emulsifiers to prepare a composite emulsifier with an HLB value of 11;

[0053] (2) Dissolve 15g sodium lauryl sulfate and 18g triethanolamine in 185kg water to make a transparent solution;

[0054] (3) Add 212kg of oxidized polyethylene wax to the reactor, then add 59kg of compound emulsifier with an HLB value of 11, add 13kg of emulsifying aid, and then heat the reactor to 123°C to emulsify the oxidized polyethylene wax;

[0055] (4) After the oxidized polyethylene wax in (3) is melted, slowly add 185 kg of a mixed aqueous solution of sodium lauryl sulfate and triethanolamine heated to 84 ° C, then seal it, and first stir at a speed of 79 rpm for 26 minutes , then stirred for 39 minutes at a speed of 265 rpm;

[0056] (5) Stop heating, nat...

Embodiment 3

[0065] Example 3 , a preparation method of a modified magnesium hydroxide flame retardant, the preparation method comprising the following steps:

[0066] (1) Use alkylphenol polyoxyethylene ether and sodium p-methoxy fatty amidobenzenesulfonate as the main emulsifiers to prepare a composite emulsifier with an HLB value of 16;

[0067] (2) Dissolve 15g sodium lauryl sulfate and 20g triethanolamine in 200kg water to make a transparent solution;

[0068] (3) Add 300kg of oxidized polyethylene wax to the reactor, then add 60kg of compound emulsifier with an HLB value of 16, add 20kg of emulsifying aid, and then heat the reactor to 119°C to emulsify the oxidized polyethylene wax;

[0069] (4) After the oxidized polyethylene wax in (3) is melted, slowly add 200kg of a mixed aqueous solution of sodium lauryl sulfate and triethanolamine heated to 86°C, then seal it, and first stir at a speed of 81 rpm for 26 minutes , then stirred for 44 minutes at a speed of 265 rpm;

[0070] (5...

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Abstract

The invention discloses a method for preparing a modified magnesium hydroxide flame retardant. The method comprises the following steps: preparing a compound emulsifier; dissolving sodium lauryl sulfate and triethanolamine in water to prepare a transparent solution, adding the compound emulsifier and an auxiliary emulsifier in oxidized polyethlene wax, adding the transparent solution after the oxidized polyethlene wax is melted, and agitating to obtain an emulsion; adding an ammonia water solution into the emulsion to obtain an organic modified emulsion; adding an anionic surfactant water solution into magnesium hydroxide, and agitating to obtain powder; drying to obtain magnesium hydroxide powder; adding the organic modified emulsion into the magnesium hydroxide powder, adding a dispersant, cooling to a room temperature, and obtaining magnesium hydroxide modified by the organic emulsion. The modified magnesium hydroxide flame retardant has great dispersibility and great compatibility with organic substances, can be uniformly dispersed in a base material, and cannot cause agglomeration. After the modified magnesium hydroxide flame retardant is added to an organic material, the mechanical property losses of the material can be effectively reduced. The method has the advantages of simple preparing technology, easiness in operation, strong controllability and simple equipment. As no pollution is caused in the whole technical process, energy-saving and environment-friendly requirements are met.

Description

technical field [0001] The present invention relates to a kind of preparation method of modified magnesium hydroxide flame retardant, specifically, relate to a kind of polymer material that can be used in rubber, chemical industry, building material, plastic and electron, unsaturated polyester and paint, coating etc. The invention relates to an organic surface modification preparation method of a high-purity magnesium hydroxide flame retardant, which belongs to the technical field of chemical industry. Background technique [0002] Magnesium hydroxide flame retardant is the preferred green and environment-friendly flame retardant to replace traditional halogen flame retardants. Because halogen-based flame-retardant materials produce a lot of smoke and toxic and harmful gases when they burn, causing serious secondary pollution. Therefore, in recent years, developed countries such as the United States, Japan, and the European Union have banned the use of halogen-based flame-re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/10C09C3/08
Inventor 王强
Owner 山东大耀特种材料有限公司
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