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Method for making cable-material flame-retardant of natural brucite magnesium hydrate

A technology of magnesium hydroxide and natural water, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of increasing costs and achieve the effect of low modification cost

Inactive Publication Date: 2006-08-09
吕世发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a kind of natural brucite as raw material, through pretreatment, particle collision crushing, overcomes the shortcoming that ultrafine particle is easily polluted by equipment material, ultrafine particle is through magnetization treatment again, in dry state (i.e. Dry method) uses no solvent, that is, the method in which the modifier is directly modified in the modifier after magnetic treatment. This method overcomes the shortcomings of solvent method, toxicity to humans, impact on the environment and increased cost. It has the characteristics of low cost and environment-friendly technology

Method used

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  • Method for making cable-material flame-retardant of natural brucite magnesium hydrate
  • Method for making cable-material flame-retardant of natural brucite magnesium hydrate
  • Method for making cable-material flame-retardant of natural brucite magnesium hydrate

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Effect test

Embodiment 1

[0019] The preparation method of natural brucite magnesium hydroxide flame retardant for cable material of the present invention is made up of following steps:

[0020] (A) Selecting raw materials: choose flake natural brucite produced in Dandong as raw material. The natural brucite produced in Dandong has outstanding mineral properties, and all indicators fully meet the raw material requirements for making flame retardants;

[0021] (B), raw material pretreatment: the natural brucite raw material is carried out manual screening or machine screening to obtain the natural brucite ore with high content and good whiteness;

[0022] (C), crushing treatment: adopt airflow mill to carry out airflow collision crushing, obtain natural brucite magnesium hydroxide particles, adopt diffraction method to detect through laser particle size analyzer, its particle size is d 97 = 2μm;

[0023] (D), magnetization treatment: the brucite magnesium hydroxide particles obtained above are removed ...

Embodiment 2

[0029] The preparation method of natural brucite magnesium hydroxide flame retardant for cable material of the present invention is made up of following steps:

[0030] (A), select raw material: with embodiment 1;

[0031] (B), raw material pretreatment: with embodiment 1;

[0032] (C), crushing treatment: adopt airflow mill to carry out airflow collision crushing, obtain natural brucite magnesium hydroxide particles, adopt diffraction method to detect through laser particle size analyzer, its particle size is d 97 = 10 μm;

[0033] (D), magnetization treatment: with embodiment 1;

[0034] (E), the choice of modifier and magnetization treatment: the modifier chooses aminosilane coupling agent, with KH-550 (γ-aminopropyltriethoxysilane, its structural formula is: H 2 N(CH 2 ) 3 -Si-(OC 2 h 5 ) 3 For example, set KH-550 as coupling agent II; magnetize coupling agent II;

[0035] (F), modification treatment: put the above-mentioned natural brucite magnesium hydroxide par...

Embodiment 3

[0038] The preparation method of natural brucite magnesium hydroxide flame retardant for cable material of the present invention is made up of following steps:

[0039] (A), select raw material: with embodiment 1;

[0040] (B), raw material pretreatment: with embodiment 1;

[0041] (C), crushing treatment: adopt airflow mill to carry out airflow collision crushing, obtain natural brucite magnesium hydroxide particles, adopt diffraction method to detect through laser particle size analyzer, its particle size is d 97 = 5 μm;

[0042] (D), magnetization treatment: with embodiment 1;

[0043] (E), selection of modifying agent and magnetization treatment: the modifying agent selects olefin-based silane coupling agent, taking A-171 (vinyltrimethylsilane) as an example, A-171 is defined as coupling agent I; Carry out magnetization treatment to coupling agent I;

[0044] (F), modification treatment: put the above-mentioned natural brucite magnesium hydroxide particles into the mod...

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Abstract

This invention relates to a method for preparing a fire retardant agent for natural brucite Mg(OH)2 cables including: selecting sheet-like natural brucite, 2, pre-processing the natural brucite, 3, getting superfine micro-particles of Mg(OH)2 after entering into the gas flow to be collided, crushed and magnetized, 4, putting the micro-particles into a modifying machine, then dropping or spraying the magnetized modifier into the modifying machine to get the fire retardant agent of Mg(OH)2 of natural brucite.

Description

technical field [0001] The invention relates to a method for preparing a flame retardant, in particular to a method for preparing a cable material flame retardant by utilizing natural brucite magnesium hydroxide. Background technique [0002] With the increasingly stringent fire safety standards at home and abroad, the environmental protection requirements of non-toxic and pollution-free, the rapid increase in the use of plastics, rubber, and engineering plastics, the amount of flame retardants has also increased rapidly. Flame retardants have become plastic, One of the important raw materials for the production of rubber and engineering plastics. In particular, products such as wires and cables work under conditions such as high-voltage heating and discharge. Once a fire breaks out, a large amount of smoke and toxic gases will be generated, causing property losses and casualties. To this end, countries are actively developing flame retardants that are flame-resistant and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/02H01B7/295
Inventor 吕世发
Owner 吕世发
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