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A kind of modified magnesium hydroxide, surface modification method and application

A magnesium hydroxide, surface modification technology, applied in chemical instruments and methods, dyed organosilicon compound treatment, dyed low-molecular-weight organic compound treatment, etc. problems, to achieve the effect of improving oxygen index and elongation, low production cost and reducing impact

Active Publication Date: 2022-05-03
江苏艾特克阻燃材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the object of the present invention is to provide a modified magnesium hydroxide, a surface modification method and its application, aiming at solving the problem that the existing modification method cannot simultaneously improve the flame retardancy and elongation of the flame retardant polymer. rate problem

Method used

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  • A kind of modified magnesium hydroxide, surface modification method and application
  • A kind of modified magnesium hydroxide, surface modification method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add magnesium hydroxide raw material (chemically synthesized) into water to prepare magnesium hydroxide slurry with a solid content of 10%;

[0037] The surface modifiers added in the magnesium hydroxide slurry are: γ-(acetoxypropyl)trimethoxysilane, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10- The mixture of oxide and ethanol is added to the grinding medium at the same time, and ground and reacted; in terms of mass ratio, the addition of the gamma-(acetoxypropyl) trimethoxysilane is 0.25% of magnesium hydroxide; the 9 , 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 0.4% of magnesium hydroxide; The ratio of the sum of phosphaphenanthrene-10-oxide and γ-(acetoxypropyl)trimethoxysilane is 50:50; the reaction time is 55 minutes; the reaction temperature is 75°C.

[0038] After the reaction is completed, the obtained modified magnesium hydroxide is separated from the grinding medium, and then filtered, dried and pulverized.

Embodiment 2

[0040] Add magnesium hydroxide raw material (chemically synthesized) into water to prepare magnesium hydroxide slurry with a solid content of 25%;

[0041] The surface modifiers added to the magnesium hydroxide slurry are: γ-(methacryloyloxy)propyltrimethoxysilane, 9,10-dihydro-9-oxa-10-phosphaphenanthrene - A mixture of 10-oxide and ethanol, adding grinding media at the same time, and grinding and reacting; in terms of mass ratio, the added amount of γ-(methacryloyloxy)propyltrimethoxysilane is that of magnesium hydroxide 0.65%; the 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 0.90% of magnesium hydroxide; the addition of the ethanol is the same as that of 9,10-dihydro-9 The ratio of the sum of -oxa-10-phosphaphenanthrene-10-oxide and γ-(methacryloyloxy)propyltrimethoxysilane is 55:45; the reaction time is 60min; the reaction temperature is 70°C.

[0042] After the reaction is completed, the obtained modified magnesium hydroxide is separated from the grinding mediu...

Embodiment 3

[0044] Add magnesium hydroxide raw material (chemically synthesized) into water to prepare magnesium hydroxide slurry with a solid content of 15%;

[0045] The surface modifier added in the magnesium hydroxide slurry is: a mixture of γ-(acetoxypropyl)trimethoxysilane, bis(4-carboxyphenyl)phenylphosphine oxide and ethanol, while adding grinding medium, and carry out grinding and reaction; in terms of mass ratio, the added amount of γ-(acetoxypropyl)trimethoxysilane is 1.3% of magnesium hydroxide; the bis(4-carboxyphenyl)phenyl oxidation Phosphine is 0.65% of magnesium hydroxide; the ratio of the added amount of ethanol to the sum of γ-(acetoxypropyl)trimethoxysilane and bis(4-carboxyphenyl)phenylphosphine oxide is: 53 : 47; The reaction time is 50min; The reaction temperature is 85°C.

[0046] After the reaction is completed, the obtained modified magnesium hydroxide is separated from the grinding medium, and then filtered, dried and pulverized.

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Abstract

The invention discloses a modified magnesium hydroxide, a surface modification method and its application. The surface modification method comprises the steps of adding magnesium hydroxide raw material into water and preparing magnesium hydroxide slurry with a solid content of 10-25%. ; Add a surface modifier and a grinding medium for improving flame retardancy and elongation in the magnesium hydroxide slurry, and grind and react; after the reaction is completed, the obtained modified magnesium hydroxide and the grinding medium Separate, then filter, dry and pulverize. The modification method of the invention requires simple equipment and processes, low production cost, and can be widely used in industrial production processes. After modification by the modification method described in the present invention, the oxygen index and elongation of the flame-retardant polymer are greatly improved at the same time, and its influence on the processing performance of polymer products is reduced, and the material processability and toughness are realized. optimization and balance.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a modified magnesium hydroxide, a surface modification method and application. Background technique [0002] In recent years, with the vigorous development of my country's 4G network, urban rail transit, railways, building construction and other projects, the demand for radio frequency (RF) cables for mobile communications, leaky cables, railway signal cables and other RF cables has risen sharply, prompting low-smoke The use of halogen-free flame-retardant cable materials is increasing rapidly, and people have higher and higher requirements for the safety and environmental protection performance of wire and cable products. Traditional halogen-containing cable materials will release a large amount of toxic hydrogen halide gas when burned, causing damage to personnel's life safety and construction equipment, and their use is increasingly restricted. Research on green and environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K9/04C08K3/22C09C1/02C09C3/04C09C3/08C09C3/12C08L23/08C08L51/06
CPCC08K9/06C08K9/04C08K3/22C09C1/028C09C3/006C09C3/041C09C3/12C09C3/08C08L23/0853C08L23/0815C08K2003/2224C08L2201/02C08L2205/03C08L51/06
Inventor 不公告发明人
Owner 江苏艾特克阻燃材料有限公司
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