Modified aluminum hydroxide and preparation method thereof

A technology of aluminum hydroxide and modifier, which is applied in the treatment of dyed low-molecular organic compounds, dyed high-molecular organic compounds, and fibrous fillers. Improved compatibility, low cost, and reduced impact effects

Inactive Publication Date: 2014-08-27
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the purposes of the present invention is to provide a surface-modified aluminum hydroxide in order to solve technical problems such as poor dispersibility of the above-mentioned aluminum hydroxide additive, difficulty in lipophilicity and poor compatibility.

Method used

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  • Modified aluminum hydroxide and preparation method thereof
  • Modified aluminum hydroxide and preparation method thereof
  • Modified aluminum hydroxide and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0034] A surface-modified aluminum hydroxide, calculated in parts by weight, its raw materials and content are as follows:

[0035] Aluminum hydroxide 30 parts

[0036] Modifier 1.2 parts.

[0037] Described modifier is Span;

[0038] The said class is the class 40.

[0039] The preparation method of above-mentioned a kind of surface-modified aluminum hydroxide specifically comprises the following steps:

[0040] (1) Add 30 parts of aluminum hydroxide powder into a certain amount of deionized water to disperse, make an aluminum hydroxide aqueous suspension with a concentration of 10% by mass, and raise the temperature to 80°C;

[0041] (2) Add 1.2 parts of modifier Span to a certain amount of absolute ethanol, and ultrasonically treat it for 10 minutes to obtain an ethanol solution of modifier with a concentration of 1% by mass;

[0042] (3) Control the dropping rate to 10ml / min. Add the ethanol solution of modifier with a mass percentage concentration of 1% to the alumin...

Embodiment 2

[0047] A surface-modified aluminum hydroxide, calculated in parts by weight, its raw material composition and content are as follows:

[0048] Aluminum hydroxide 30 parts

[0049] Modifier 0.9 parts.

[0050] The modifier is Span; the Span is Span 60.

[0051] The preparation method of above-mentioned a kind of surface-modified aluminum hydroxide specifically comprises the following steps:

[0052] (1) Add 30 parts of aluminum hydroxide powder into a certain amount of deionized water for dispersion, and prepare an aluminum hydroxide aqueous suspension with a concentration of 10% by mass, and then heat up to 85°C;

[0053] (2) Add 0.9 parts of Span to a certain amount of absolute ethanol and perform ultrasonic treatment for 10 minutes to obtain an ethanol solution of modifier with a concentration of 1% by mass;

[0054] (3) Control the dropping rate to 10ml / min. Add the ethanol solution of modifier with a mass percentage concentration of 1% to the aluminum hydroxide aqueous ...

Embodiment 3

[0057] A surface-modified aluminum hydroxide, calculated in parts by weight, its raw material composition and content are as follows:

[0058] Aluminum hydroxide 30 parts

[0059] Modifier 0.3 parts.

[0060] The modifier is Span; the Span is Span 85.

[0061] The preparation method of above-mentioned a kind of surface-modified aluminum hydroxide specifically comprises the following steps:

[0062] (1) Add 30 parts of aluminum hydroxide powder into a certain amount of deionized water for dispersion, and prepare an aluminum hydroxide aqueous suspension with a concentration of 10% by mass, and then heat up to 80°C;

[0063] (2) Add 0.3 parts of Span to a certain amount of absolute ethanol and perform ultrasonic treatment for 10 minutes to obtain an ethanol solution of modifier with a concentration of 1% by mass;

[0064] (3) Control the dropping rate to 10ml / min. Add the ethanol solution of modifier with a mass percentage concentration of 1% to the aluminum hydroxide aqueous ...

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Abstract

The invention discloses a surface-modified aluminum hydroxide and a preparation method thereof. The surface-modified aluminum hydroxide comprises, by mass, 30 parts of aluminum hydroxide and 0.3-1.2 parts of a modifier. The modifier is Span, a complex of Span and stearic acid, or a complex of Span and sodium stearate. The Span is Span 40, Span 60 or Span 85. The preparation method comprises the following steps of preparing an aluminum hydroxide aqueous suspension having a mass concentration of 10%, heating the aluminum hydroxide aqueous suspension to a temperature of 80-85 DEG C, preparing a modifier-ethanol solution having a modifier mass concentration of 1%, adding the modifier-ethanol solution into the aluminum hydroxide aqueous suspension, heating the mixed suspension to a temperature of 70-90 DEG C, keeping the temperature for 0.5-1.5h, and carrying out standing, suction filtration, washing, drying and grinding so that the surface-modified aluminum hydroxide which is conducive to uniform dispersion in a polymer base and improves base compatibility is obtained.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a modified aluminum hydroxide and a preparation method thereof. Background technique [0002] Aluminum hydroxide is a commonly used raw material for chemical production. One of its most important uses is that it can be used as a flame retardant additive for various polymer materials to improve the flame retardant performance of the material, but aluminum hydroxide must be used in these high It can be dispersed evenly in the molecular substrate, so as not to affect the processing performance and basic mechanical properties of the substrate itself. [0003] Due to the "hydrophilic and oleophobic" characteristics of the surface of aluminum hydroxide, the interface properties between it and polymer materials are too different, and the binding force is very poor. In addition, aluminum hydroxide is prone to agglomeration during the molding process, so that It is difficult to disperse ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C09C1/40C09C3/10C09C3/08
Inventor 朱鹏梅庆波吴波刘惠平王荣胡彬龙
Owner SHANGHAI INST OF TECH
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