Ultrafine modified magnesium hydroxide flame retardant and preparation method thereof

A magnesium hydroxide and flame retardant technology, applied in chemical instruments and methods, dyed organic silicon compound treatment, dyed low-molecular organic compound treatment, etc., can solve the problem of reducing the impact resistance of materials, poor compatibility of matrix resins, and material flexibility Loss of resistance and other issues, to achieve high flame retardant efficiency, good affinity, the effect of small physical properties

Pending Publication Date: 2020-04-28
HEFEI ZHONGKE FLAME RETARDANT NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Magnesium hydroxide is not only cheap and environmentally friendly, but also has low flame retardant performance. It requires a high amount of addition to make the material flame retardant, and it has poor compatibility with the matrix resin and poor affinity, which greatly reduces the The impact resistance of the material, or the loss of flexibility of the material, so it is necessary to modify the magnesium hydroxide flame retardant

Method used

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  • Ultrafine modified magnesium hydroxide flame retardant and preparation method thereof
  • Ultrafine modified magnesium hydroxide flame retardant and preparation method thereof
  • Ultrafine modified magnesium hydroxide flame retardant and preparation method thereof

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preparation example Construction

[0057] The second aspect of the present invention provides the preparation method of the superfine modified magnesium hydroxide flame retardant as described above, comprising the following steps:

[0058] (1) Add surfactant, activator, and dispersant to ethanol, then heat to 40-80°C and stir to dissolve to obtain solution A;

[0059] (2) dissolving the magnesium salt in water to prepare a 1-5mol / L magnesium salt solution;

[0060] (3) Add the magnesium salt solution dropwise to the aqueous solution of 1-3mol / L alkaline precipitant to ensure that the pH of the system during the reaction is greater than or equal to 10. After the reaction, add solution A dropwise at a temperature of 40-80°C , stirring at a stirring speed of 400-600r / min, followed by suction filtration, washing, and drying at 100-110°C to obtain a modified magnesium hydroxide flame retardant;

[0061] (4) Add the modified magnesium hydroxide flame retardant to a super pulverizer for pulverization to obtain an ult...

Embodiment 1

[0066] Embodiment 1 provides a kind of superfine modified magnesium hydroxide flame retardant, comprises the preparation raw material of following parts by weight: 40 parts of alkaline precipitant, 25 parts of magnesium salt, 7 parts of activator, 10 parts of surfactant, dispersion 2 doses.

[0067] The alkaline precipitating agent is sodium hydroxide.

[0068] The magnesium salt is magnesium chloride hexahydrate.

[0069] The activator is sodium hexametaphosphate.

[0070] Described tensio-active agent is the mixing of calcium stearate, polyvinyl alcohol.

[0071] The mass ratio of calcium stearate to polyvinyl alcohol is 1:2.5.

[0072] The dispersants are KYC-913 and KYC-9.

[0073] The mass ratio of KYC-913 and KYC-9 is 1:0.7.

[0074] A kind of preparation method of superfine modified magnesium hydroxide flame retardant as described above, comprises the following steps:

[0075] (1) Add surfactant, activator, and dispersant to ethanol, then heat to 60°C and stir to ...

Embodiment 2

[0080] Example 2 is basically the same as Example 1, except that it includes the following preparation materials in parts by weight: 30 parts of alkaline precipitant, 20 parts of magnesium salt, 6 parts of activator, 8 parts of surfactant, and 1 part of dispersant.

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Abstract

The invention relates to the technical field of inorganic flame retardant materials, in particular to an ultrafine modified magnesium hydroxide flame retardant and a preparation method thereof. The superfine modified magnesium hydroxide flame retardant is prepared from the following preparation raw materials in parts by weight: 30-50 parts of an alkaline precipitator, 20-30 parts of magnesium salt, 6-8 parts of an activating agent, 8-12 parts of a surfactant and 1-3 parts of a dispersing agent. The superfine modified magnesium hydroxide flame retardant prepared by the invention has the advantages of higher flame-retardant efficiency, favorable compatibility with materials, higher cost performance, environment friendliness and no toxicity.

Description

technical field [0001] The invention belongs to the technical field of inorganic flame retardant materials. Specifically, the invention relates to an ultrafine modified magnesium hydroxide flame retardant and a preparation method thereof. Background technique [0002] Flame retardants, also known as flame retardants, fire resistance or fireproofing agents, improve the safety of a variety of materials. Magnesium hydroxide is a new type of filled flame retardant. During the process of thermal decomposition, it releases bound water and absorbs a large amount of latent heat, so as to reduce the surface temperature of the synthetic material it fills in the flame, and has the ability to inhibit polymer decomposition. and the effect of cooling the combustible gases produced. Magnesium oxide produced by thermal decomposition of magnesium hydroxide is an ideal refractory material. In addition to helping to optimize the fire resistance of synthetic materials, the water vapor released...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/02C09C1/02C09C3/06C09C3/08C09C3/10C09C3/12
CPCC09C1/028C09C3/006C09C3/06C09C3/063C09C3/08C09C3/10C09C3/12C09K21/02
Inventor 王周王立贵
Owner HEFEI ZHONGKE FLAME RETARDANT NEW MATERIAL
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