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Surface treating coupling agent for natural magnesium hydroxide organic flame-retardant powder

A technology of natural magnesium hydroxide and inorganic flame retardant, applied in the direction of dyeing low-molecular-weight organic compounds, etc., can solve problems such as poor compatibility of polymer materials, and achieve improved mechanical properties, easy availability of raw materials, significant economic benefits and social benefits. effect of benefit

Inactive Publication Date: 2004-04-28
杨治富
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a natural magnesium hydroxide inorganic flame retardant to solve the problems of strong polarity, hydrophilicity, easy cohesion, and poor compatibility with polymer materials of the inorganic flame retardant brucite Coupling agent for powder surface treatment

Method used

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Embodiment Construction

[0007] The present invention is realized like this, the present invention adopts natural magnesium hydroxide ore, and ore is white, light green, slightly light green. The mineral is a trigonal crystal system, the crystal is in the shape of a thick plate, and it is often a sheet-like aggregate. The fracture is vitreous, and the surface is pearly. The hardness is 2.5 and the density is 2.3.

[0008] The production process of natural magnesium hydroxide inorganic flame retardant powder is: raw material - Raymond pulverization - jet milling - powder surface treatment - quality inspection - packaging and storage - delivery.

[0009] In the natural magnesium hydroxide inorganic flame retardant powder surface treatment process, the natural magnesium hydroxide inorganic flame retardant powder surface treatment coupling agent is used, and silane or higher fatty acid alkali metal salt anionic surfactants, such as alkanes Sulfates, sulfonated succinates, dosage (percentage by weight): 0....

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Abstract

The present invention belongs to the field of green flame retardant surface treating technology, and is especially surface treating coupling agent for natural magnesium hydroxide inorganic flame retardant powder. The surface treating coupling agent consists of: silane or alkali metal salt of higher fatty acid as anionic surfactant including alkyl sulfate and sulfonated succinate in 0.5-4 wt%, stearic acid in 0.2-3 wt%, or gamma-methyl propyl acrylate trimethoxy silane 0.1-0.2 wt%. The present invention solves the technological problems in surface treatment of natural brucite, and composite coupling agent is used to raise the dispersity and compatibility of brucite in polymer material and improve the mechanical performance of flame retardant material. Low molecular weight organosilicon compound with special structure has outstanding effect of improving the strength and heat resistance of stuffing material.

Description

technical field [0001] The invention belongs to an environment-friendly green flame retardant surface treatment technology, in particular to a natural magnesium hydroxide inorganic flame retardant powder surface treatment coupling agent. Background technique [0002] At present, the flammability of polymer materials at home and abroad and the great danger of causing fire make the research on the flame retardancy of plastics an important research topic. There are two ways to produce magnesium hydroxide inorganic flame retardants. One is to use chemical synthesis, that is, to use raw materials such as brine and brine containing magnesium chloride to react with caustic alkalis in aqueous media to generate magnesium hydroxide. After filtration, It can be obtained by washing and drying; another way is to grind the natural mineral brucite to the desired particle size. In recent years, due to the environmental problems caused by halogen-containing flame retardants, inorganic flame...

Claims

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Application Information

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IPC IPC(8): C08K3/22C09C3/08
Inventor 杨治富梁兵葛晓宇
Owner 杨治富
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