Method for preparing magnesium hydrate flame retardant

A magnesium hydroxide and flame retardant technology, which is applied in dyeing organosilicon compound treatment, dyeing low molecular organic compound treatment, dyeing physical treatment, etc., can solve the problems of difficult product performance guarantee, complicated process flow, and many influencing factors. Achieve the effects of improving production efficiency, shortening the process flow, and increasing the filtration rate

Active Publication Date: 2015-05-06
江苏艾特克阻燃材料有限公司
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Problems solved by technology

Such a process is obviously complicated, the cost is high, and due to too many influencing factors, the product performance is difficult to guarantee

Method used

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  • Method for preparing magnesium hydrate flame retardant
  • Method for preparing magnesium hydrate flame retardant
  • Method for preparing magnesium hydrate flame retardant

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[0024] The preparation method of magnesium hydroxide flame retardant of the present invention comprises the following steps, combining figure 1 Shown:

[0025] Step 1, preparing inorganic magnesium salt solution and alkali solution respectively.

[0026] Among them, water-soluble salts such as magnesium chloride, magnesium sulfate, and magnesium nitrate can be used as the inorganic magnesium salt. Formulated Mg 2+ The concentration range of the substance is 0.5~5mol / L.

[0027] The alkali solution that the present invention adopts is ammoniacal liquor, controls OH - The concentration range of the substance is 0.02~10mol / L. Certainly, adopting other common inorganic alkalis such as sodium hydroxide, potassium hydroxide etc. also can achieve the object of the present invention, but need to strictly control the flow rate and the concentration of adding alkali. Ammonia and Mg 2+ Formed Mg(OH) 2 The precipitated particles are not too fine, and the obtained magnesium hydroxid...

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Abstract

The invention discloses a method for integrally preparing a high-dispersity ultrafine magnesium hydroxide flame retardant, which comprises the following steps: continuously synthesizing high-purity magnesium hydroxide; and carrying out single cycle wet grinding and surface modification on magnesium hydroxide and integrally implementing particle size control and surface processing of the magnesium hydroxide flame retardant. According to the invention, the technical difficulties of control on purity, slurry viscosity, particle size, particle size distribution and specific surface area of the magnesium hydroxide flame retardant, the existence of the phenomena of secondary coagulation and bonding during the drying process and the like; a hydrophilic surface of magnesium hydroxide flame retardant powder is modified into a lipophilic surface, so that the intermiscibility and dispersity of the powder in a macromolecule polymeric material are improved, the influence of the high-dispersity ultrafine magnesium hydroxide flame retardant on the processing performance and the mechanical performance of a polymer product is reduced, and the comprehensive properties of the macromolecule polymer, such as flame retardance, processing, mechanics, electrics, are optimized.

Description

technical field [0001] The invention relates to the field of preparation of magnesium hydroxide flame retardants, in particular to an integrated method for preparing highly dispersed ultrafine magnesium hydroxide flame retardants. Background technique [0002] The development trend of international flame retardants in the 21st century is moving towards environmental protection, low toxicity, low smoke, high efficiency, and multi-functionality. Many foreign countries have restricted the production and use of flame retardants that pollute the environment. Europe has begun to restrict the sales of halogen-containing flame retardants, Japan prohibits the use of acid gas flame retardants when cables are burned, and the United States has formulated regulations for the use of low-halogen cable coatings. With the rapid development of China's economic construction, the improvement of safety performance requirements, people's emphasis on green and environmental protection, and the inf...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/12C09C3/08C09C3/04C09K21/02C08K9/04C08K9/06C08K3/22
Inventor 陈同
Owner 江苏艾特克阻燃材料有限公司
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