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Preparation method of montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant

A technology of nano-aluminum hydroxide and inorganic flame retardant, which is applied in the field of fine chemicals, can solve the problems of low flame retardant efficiency, large amount of addition, and poor combustion charcoal performance, so as to improve comprehensive mechanical properties, improve flame retardant performance, and reduce The effect of usage

Active Publication Date: 2019-07-09
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as an inorganic flame retardant, aluminum hydroxide has problems such as large amount of addition, poor combustion into char, low flame retardant efficiency, and will reduce the physical and mechanical properties of polymer materials, which limits its application prospects.

Method used

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  • Preparation method of montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant
  • Preparation method of montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant
  • Preparation method of montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant

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Embodiment 1

[0024] In this embodiment, a method for preparing a montmorillonite-modified nano-aluminum hydroxide composite inorganic flame retardant, the steps are as follows:

[0025] (1) Preparation of anionic montmorillonite:

[0026] Add montmorillonite powder into water, disperse and strip it by ultrasonic vibration, raise the temperature to 40°C, add γ-aminopropylmethyldimethoxysilane and dodeca Alkyl benzyl dimethyl ammonium chloride composite modifier, wherein the mass ratio of γ-aminopropyl methyl dimethoxysilane and dodecyl benzyl dimethyl ammonium chloride is 1:1, and then Adding sodium dodecylsulfonate anionic surfactant with a mass ratio of 1:80 to montmorillonite, mechanical stirring and grinding and ultrasonic oscillation for 12h, then adding dropwise anionic surfactant with a mass ratio of 1:100 to montmorillonite Ammonia, and react for 6 hours to obtain an anionic montmorillonite solution with an equivalent diameter of 0.5-2 μm.

[0027] (2) Preparation of nano aluminum...

Embodiment 2

[0032] In this embodiment, a method for preparing a montmorillonite-modified nano-aluminum hydroxide composite inorganic flame retardant, the steps are as follows:

[0033] (1) Preparation of anionic montmorillonite:

[0034] Add montmorillonite powder into water, disperse and strip it by ultrasonic vibration, raise the temperature to 60°C, add γ-aminopropylmethyldimethoxysilane and dodeca Alkyl benzyl dimethyl ammonium chloride composite modifier, wherein the mass ratio of γ-aminopropyl methyl dimethoxysilane and dodecyl benzyl dimethyl ammonium chloride is 1:1, and then Adding sodium dodecylsulfonate anionic surfactant with a mass ratio of 1:90 to montmorillonite, mechanical agitation, grinding and ultrasonic oscillation for 24 hours, then adding dropwise anionic surfactant with a mass ratio of 1:300 to montmorillonite Ammonia, and react for 8 hours to obtain an anionic montmorillonite solution with an equivalent diameter of 0.5-2 μm.

[0035] (2) Preparation of nano alumi...

Embodiment 3

[0040] In this embodiment, a method for preparing a montmorillonite-modified nano-aluminum hydroxide composite inorganic flame retardant, the steps are as follows:

[0041] (1) Preparation of anionic montmorillonite:

[0042] Add montmorillonite powder into water, disperse and strip it by ultrasonic vibration method, raise the temperature to 80°C, add γ-aminopropylmethyldimethoxysilane and dodeca Alkyl benzyl dimethyl ammonium chloride composite modifier, wherein the mass ratio of γ-aminopropyl methyl dimethoxysilane and dodecyl benzyl dimethyl ammonium chloride is 1:1, and then Adding sodium dodecylsulfonate anionic surfactant with a mass ratio of 1:100 to montmorillonite, mechanical agitation, grinding and ultrasonic oscillation for 48h, then adding dropwise anionic surfactant with a mass ratio of 1:400 to montmorillonite Ammonia, and react for 10 hours to obtain an anionic montmorillonite solution with an equivalent diameter of 0.5-2 μm.

[0043] (2) Preparation of nano a...

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Abstract

The invention discloses a preparation method of a montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant. The composite inorganic flame retardant is prepared from anionicmontmorillonite and nano aluminum hydroxide, wherein the equivalent diameter of nano aluminum hydroxide particles is 5-30 nm, and the equivalent diameter of the anionic montmorillonite is 0.5-2 microns. The method comprises the following steps: (1) preparation of the anionic montmorillonite; and (2) preparation of the nano aluminum hydroxide. According to the invention, the flame-retardant effectof aluminum hydroxide is maintained, and meanwhile, flame retardancy, heat resistance, reinforcing performance and gas-heat blocking of montmorillonite are utilized, so that the carbon-forming effectin a combustion process of the high-molecular material is promoted, and flame retardancy of the high-molecular material is better improved. The using amount of aluminum hydroxide is reduced, and meanwhile, the comprehensive mechanical property of the high-molecular material is improved, so that great significance is achieved for development of flame-retardant applications of aluminum hydroxide.

Description

technical field [0001] The invention relates to a preparation method of a montmorillonite-modified nano aluminum hydroxide composite inorganic flame retardant, which belongs to the technical field of fine chemicals. Background technique [0002] With the large-scale application of polymer materials such as plastics and rubber, flame retardant materials are crucial to ensuring social and economic development and the safety of people's lives and property. The flame retardant and smoke suppression of polymer materials have become a major issue in the field of flame retardant. Especially under the current warm appeal of safety and environmental protection, the inorganic flame retardant powder material is a green flame retardant material that integrates the three functions of flame retardant, smoke suppression and filling, and is also the most important functional powder material. . [0003] Aluminum hydroxide is an inorganic flame retardant with a wide range of sources. It is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/06C08K9/02C08K7/00
CPCC08K7/00C08K9/02C08K9/04C08K9/06
Inventor 宋建强彭鹤松李永安王光硕张翔邓克文邓鹏
Owner JIANGXI GUANGYUAN CHEM
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