A kind of thermal conductivity flame retardant and preparation method thereof

A technology of flame retardants and additives, which is applied in the field of thermally conductive flame retardants and their preparation, can solve the problems of insufficient heat conduction and flame retardancy, and achieve good heat conduction effects, good heat conduction, and good compatibility Effect

Active Publication Date: 2019-01-01
山东四新阻燃材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current flame retardants only have the effect of flame retardancy. When flame retardants are added to polymer substrates to make heat-conducting plastics, it is often difficult to have both heat-conducting properties at the same time. double demand

Method used

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  • A kind of thermal conductivity flame retardant and preparation method thereof
  • A kind of thermal conductivity flame retardant and preparation method thereof
  • A kind of thermal conductivity flame retardant and preparation method thereof

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preparation example Construction

[0020] The invention provides a method for preparing a heat-conducting flame retardant, which comprises the following steps:

[0021] (a) Weigh the main material, auxiliary material and first auxiliary agent, and mix the main material, auxiliary material and first auxiliary agent at a first temperature to obtain a preform, wherein the main material includes spherical magnesium hydroxide and Fibrous structure, the mass ratio of spherical magnesium hydroxide to fibrous structure is 5:1~20:1;

[0022] (b) mixing the preform and the second auxiliary agent at a second temperature and drying to obtain the thermally conductive flame retardant.

[0023] In step (a), the purpose of introducing the fibrous structure into the main material is to use the special structure of the fibrous structure to overlap a plurality of spherical magnesium hydroxide to form a spherical needle-shaped heat conduction system, which It has good heat conduction effect. The fibrous structure is one or more ...

Embodiment 1

[0037] Weigh the main material, auxiliary material and first auxiliary agent, and mix the main material, auxiliary material and first auxiliary agent in a high-speed mixer at about 80 degrees Celsius to obtain a preform, wherein the main material includes spherical magnesium hydroxide and acicular magnesium hydroxide, the mass ratio of spherical magnesium hydroxide to acicular magnesium hydroxide is 20:1, the auxiliary material is wollastonite, the first auxiliary agent is polysiloxane, the main material and auxiliary material The mass ratio is 85:15, and the mass of the first auxiliary agent is 5% of the total mass of the main material and the auxiliary material.

[0038] The preform and the second additive are mixed and dried at about 115 degrees Celsius to obtain the thermally conductive flame retardant. Wherein, the second auxiliary agent is vinyl silane, and the mass of the second auxiliary agent is 5% of the total mass of the main material and the auxiliary material.

...

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Abstract

The invention provides a heat conduction flame retardant. The method comprises the steps of: (a) weighing main materials, an auxiliary material and a first assistant, and mixing the main materials, the auxiliary material and the first assistant under a first temperature to obtain a preform, wherein the main materials include spherical magnesium hydroxide and a fiber-like structure in a mass ratio of 5:1-20:1; and (b) modifying the perform by a second assistant under a second temperature and performing drying so as to obtain the heat conduction flame retardant. The invention also provides a heat conduction flame retardant.

Description

technical field [0001] The invention relates to the technical field of magnesium hydroxide materials with flame retardant effect, in particular to a thermally conductive flame retardant and a preparation method thereof. Background technique [0002] Flame retardants are widely used in everyday products. Flame retardants are divided into halogen-containing flame retardants and halogen-free flame retardants. Halogen-containing flame-retardant materials will produce a large amount of smoke and toxic corrosive hydrogen halide gas during the flame-retardant process, causing secondary hazards, so they are gradually banned. Halogen-free flame retardants are mainly phosphorus compounds and metal hydroxides. Among them, magnesium hydroxide is a new type of filled flame retardant. It releases bound water and absorbs a large amount of latent heat when it is thermally decomposed to reduce the surface temperature of the synthetic material it fills in the flame. It has the ability to in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K3/22C08K7/08C08K3/34C08L77/06C08K13/06C09K5/14
CPCC08K3/22C08K3/34C08K7/08C08K9/06C08K9/08C08K2003/2224C08L77/06C08L2201/02C08L2205/03C09K5/14C08L91/06C08L23/0815C08L51/06C08K13/06
Inventor 尹洪伟
Owner 山东四新阻燃材料有限公司
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