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Carrier-free aluminum hydroxide flame retardant master batch and preparation method thereof

A kind of aluminum hydroxide flame retardant, aluminum hydroxide technology, applied in the field of flame retardant synthesis, can solve the problems of uneven particle distribution, easy dust, material viscosity increase, etc., to expand the scope of application, reduce dust pollution, expand Effect of processing temperature

Inactive Publication Date: 2020-04-28
HEFEI ZHONGKE FLAME RETARDANT NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low initial decomposition temperature of aluminum hydroxide, which is similar to the processing temperature of rubber and plastic mixing and molding, part of the crystallization water of aluminum hydroxide is often removed during processing, and pores are formed in the product, which affects the mechanical properties of the product. Performance; in addition, because aluminum hydroxide is a strong polar inorganic filler, the primary particles are easy to agglomerate, the oil absorption rate is high, and the compatibility with organic polymers is poor, so when a large amount of polymer materials such as resins are filled, the viscosity of the material will increase. , making molding and processing difficult, particle distribution uneven, and ultimately leading to a decline in technical indicators such as the mechanical properties of the material; finally, traditional aluminum hydroxide flame retardants are mostly powdery, and are prone to dust when compounded with polymer materials, affecting Environmental quality and worker health

Method used

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Examples

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preparation example Construction

[0062] A second aspect of the present invention provides a method for preparing a carrier-free aluminum hydroxide flame retardant masterbatch, comprising the following steps:

[0063] (1) Dissolving the surface treatment agent in an organic solvent to form a modified solution;

[0064] (2) Preheat the aluminum hydroxide at 60-100°C for 10-60 minutes, add the coupling agent by high-pressure spray under stirring, and then keep stirring for 10-40 minutes;

[0065] (3) Then add the modified solution by spraying under high pressure, stir for 10-30min; evaporate the organic solvent, extrude with a screw, and dry at 90-110°C for 0.5-7h to obtain the product.

Embodiment 1

[0068] Example 1 provides a carrier-free aluminum hydroxide flame retardant masterbatch. In parts by weight, the preparation raw materials include: 95 parts of aluminum hydroxide, 1 part of coupling agent, 2 parts of surface treatment agent, 20 parts of organic solvent, 2 parts of binder.

[0069] The particle size of the aluminum hydroxide is 4 μm.

[0070] The coupling agent is isopropyl tris (dodecylbenzenesulfonyl) titanate, isopropyl tris (dioctyl pyrophosphate acyloxy) titanate, γ-aminopropyl triethoxy A combination of silanes, among which isopropyltris(dodecylbenzenesulfonyl)titanate, isopropyltris(dioctylpyrophosphate acyloxy)titanate, gamma-aminopropyltriethoxysilane The mass ratio is 1:2:1.

[0071] The surface treatment agent is silicone oil.

[0072] The silicone oil is amino silicone oil and hydroxyl silicone oil, wherein the mass ratio of amino silicone oil to hydroxyl silicone oil is 1:2.4.

[0073] The amino silicone oil can be purchased commercially from G...

Embodiment 2

[0082] Example 2 provides a carrier-free aluminum hydroxide flame retardant masterbatch. In parts by weight, the raw materials for preparation include: 90 parts of aluminum hydroxide, 0.1 part of a coupling agent, 0.5 parts of a surface treatment agent, 10 parts of an organic solvent, 1 part adhesive.

[0083] The particle size of the aluminum hydroxide is 4 μm.

[0084] The coupling agent is isopropyl tris (dodecylbenzenesulfonyl) titanate, isopropyl tris (dioctyl pyrophosphate acyloxy) titanate, γ-aminopropyl triethoxy A combination of silanes, among which isopropyltris(dodecylbenzenesulfonyl)titanate, isopropyltris(dioctylpyrophosphate acyloxy)titanate, gamma-aminopropyltriethoxysilane The mass ratio is 1:2:1.

[0085] The surface treatment agent is silicone oil.

[0086] The silicone oil is amino silicone oil and hydroxyl silicone oil, wherein the mass ratio of amino silicone oil to hydroxyl silicone oil is 1:2.4.

[0087]The amino silicone oil can be purchased commerc...

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Abstract

The invention relates to the technical field of flame retardant synthesis, and particularly discloses a carrier-free aluminum hydroxide flame retardant master batch and a preparation method thereof. The carrier-free aluminum hydroxide flame retardant master batch comprises the following preparation raw materials in parts by weight: 90-99 parts of aluminum hydroxide, 0.1-1.5 parts of a coupling agent, 0.5-3 parts of a surface treating agent, 10-30 parts of an organic solvent and 1-3 parts of a binder. The coupling agent and the surface treating agent are used for carrying out surface treatmenton the aluminum hydroxide, so that the prepared aluminum hydroxide is not prone to raise dust, the decomposition temperature of the aluminum hydroxide is high, and the application range and the processing temperature of the aluminum hydroxide flame retardant are enlarged; the dispersity of aluminum hydroxide in a high-molecular polymer system is also improved; and finally, the preparation processis simple, the cost is relatively low, the dust pollution is greatly reduced, and the preparation method is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of flame retardant synthesis, in particular to a carrier-free aluminum hydroxide flame retardant masterbatch and a preparation method thereof. Background technique [0002] Aluminum hydroxide has three functions of flame retardant, smoke elimination and filling. It is an internationally recognized pollution-free flame retardant and has a large consumption every year. Aluminum hydroxide flame retardant has a wide range of uses. It is not only used for flame retardancy, but also for smoke suppression and reducing the generation of corrosive gases from materials. It can not only be used alone, but also often used in combination with other flame retardants. Especially for polymers whose processing temperature is lower than the decomposition temperature of aluminum hydroxide flame retardant, aluminum hydroxide flame retardant is an excellent flame retardant material, which is widely used in elastomers, thermosett...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/22C08J3/22
CPCC08J3/223C08K9/10C08K2003/2227
Inventor 王周王立贵
Owner HEFEI ZHONGKE FLAME RETARDANT NEW MATERIAL
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