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Flame-retardant heat-conducting coating and preparation method thereof

A heat-conducting coating and flame retardant technology, applied in the direction of fire-resistant coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of low yield, foaming of synthetic resin products, uneven surface, etc., to increase thermal conductivity , Not easy to settle, evenly dispersed

Inactive Publication Date: 2020-05-08
COLLTECH DONGGUAN BONDING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary aluminum hydroxide starts dehydration at 200°C, and is completely dehydrated at 330°C to 350°C, while thermoplastic resins are mostly cured within the dehydration temperature range of aluminum hydroxide, resulting in foaming in the finished synthetic resin and uneven surface. Low yield

Method used

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  • Flame-retardant heat-conducting coating and preparation method thereof
  • Flame-retardant heat-conducting coating and preparation method thereof

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preparation example Construction

[0031] In some embodiments of the present invention, the preparation method of flame-retardant thermally conductive coating comprises the following steps:

[0032] (1) Add the flame-retardant heat-conducting powder into the synthetic resin and stir, the stirring speed is 1500-2000r / min, the temperature is 20-30°C, and the stirring time is 25-35min;

[0033] (2) Then add solvent and additives to stir and disperse, the stirring speed is 800-1000r / min, the temperature is 20-30°C, and the stirring time is 25-35min, to obtain a thermally conductive coating.

[0034]The flame-retardant and heat-conducting coating of the present invention uses boehmite flame retardant as heat-conducting powder, makes full use of its smoke suppression, flame-retardant, and heat-conducting properties, and adopts granulation technology to develop towards superfineness, and reasonably selects particle size distribution , to make full contact between particles and increase the density of particles. Durin...

Embodiment 1

[0037] A kind of flame-retardant heat-conducting paint, is made up of the raw material of following percentage by weight:

[0038] Boehmite flame retardant 6um 30wt%;

[0039] Synthetic resin: TDI modified alkyd resin 29wt%;

[0040] Solvent: ethyl acetate 20wt%, butyl acetate 20wt%;

[0041] Auxiliaries: 0.3 wt% of organic bentonite, 0.3 wt% of polyether modified siloxane solution, 0.4 wt% of cobalt isooctanoate.

[0042] The preparation method of flame-retardant heat-conducting coating in the present embodiment is:

[0043] (1) Add the flame-retardant and heat-conducting powder into the synthetic resin and stir, the stirring speed is 1500r / min, the temperature is 25°C, and the stirring time is 30min;

[0044] (2) Then add solvent and additives and stir to disperse. The stirring speed is 800r / min, the temperature is 25°C, and the stirring time is 30min to obtain a thermally conductive coating.

Embodiment 2

[0046] A kind of flame-retardant heat-conducting paint, is made up of the raw material of following percentage by weight:

[0047] Boehmite flame retardant 6um 40wt%;

[0048] Synthetic resin: acrylic resin 29wt%;

[0049] Solvent: ethyl acetate 30wt%;

[0050] Auxiliaries: 0.3 wt% of organic bentonite, 0.3 wt% of polyether modified siloxane solution, 0.4 wt% of cobalt isooctanoate.

[0051] The preparation method of flame-retardant heat-conducting coating in the present embodiment is:

[0052] (1) Add the flame-retardant heat-conducting powder into the synthetic resin and stir, the stirring speed is 2000r / min, the temperature is 20°C, and the stirring time is 30min;

[0053] (2) Then add solvent and additives and stir to disperse. The stirring speed is 1000r / min, the temperature is 20°C, and the stirring time is 30min to obtain a thermally conductive coating.

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Abstract

The invention relates to the technical field of coatings, in particular to a flame-retardant heat-conducting coating and a preparation method thereof. The coating is composed of 30-50 wt% of flame-retardant heat-conducting powder, 20-40 wt% of synthetic resin, 20-40 wt% of a solvent and 1-5 wt% of an auxiliary agent, wherein the flame-retardant heat-conducting powder is a boehmite flame retardant.According to the invention, the boehmite flame retardant is used as the flame-retardant heat-conducting powder, the 1% boehmite flame retardant has a dehydration temperature of 350 DEG C or above, the dehydration peak value is obtained at a temperature of 500 DEG C, EC is less than 50 [mu]S / cm, dielectricity is strong, the problems of product defects and dielectric property reduction caused by the low dehydration temperature of the common aluminum hydroxide are solved, and the prepared coating material is suitable for the field of electronic appliances and has excellent heat-resisting and heat-conducting performances and good flame-retardant effect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a flame-retardant heat-conducting coating and a preparation method thereof. Background technique [0002] In the field of electrical appliances and electronics, there are widespread heat dissipation problems. If the heat cannot be released well, it will inevitably affect the performance of the product, reduce its life, and cause immeasurable losses. Therefore, the heat dissipation problem needs to be solved urgently. At the same time, with the improvement of heat-resistant grades of electrical and electronic products and related technical specifications, flame-retardant requirements for coatings have been put forward, and flame-retardant coatings have emerged as the times require. Flame retardant coating refers to a class of substances coated on the surface of flammable substrates, which can reduce the flammability of the surface of the coated material to prevent the rapid sprea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D175/14C09D133/04C09D175/04C09D5/18
CPCC08K2003/2227C08K2201/003C09D5/18C09D133/04C09D167/08C09D175/04C09D175/14C08K3/22
Inventor 罗勇黄成生
Owner COLLTECH DONGGUAN BONDING TECH CO LTD
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