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Heat conduction insulation coating

A technology of heat conduction insulation and coating, applied in the direction of coating, etc., can solve the problems of poor mechanical properties of coatings, increase costs, and affect the service life of coatings, etc., and achieve the effects of improving electrical properties, increasing sealing, and improving heat resistance

Inactive Publication Date: 2016-08-10
汤海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are a variety of insulating coatings that can be adapted to high temperature environments. These coatings can still maintain good dielectric properties and have good insulation properties under high temperature environments. However, some coatings can meet the requirements of insulation in high temperature environments. Performance requirements, but due to the formulation and process of the coating itself, the mechanical properties of some coatings will deteriorate under high temperature conditions, thus affecting the service life of the coating and increasing the cost

Method used

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Embodiment 1

[0018] A thermally conductive insulating coating, the composition of which is as follows in parts by mass: 10 parts of epoxy-modified silicone resin, 2 parts of modified silicon nitride, 3 parts of modified alumina, 20 parts of acetone, 1 part of cobalt naphthenate, mica powder 8 parts, 2 parts of calcium dihydrogen phosphate, 1.8 parts of polyamide epoxy curing agent, 0.8 parts of potassium sodium tartrate, 1.2 parts of leveling agent.

[0019] Among them, the leveling agent is polyether polyester modified organosiloxane

[0020] Wherein, the preparation method of modified silicon nitride is as follows: put γ-glycidyl etheroxypropyl trimethylsilane in a beaker, add distilled water and oxalic acid, adjust the pH value to 3.6-4, stir and dissolve, add acetone and Nano-silicon oxide, stirred at 30°C for 6 hours, and modified silicon nitride was obtained after standing for 6 hours; the ratio of nano-silicon oxide to acetone was 1g of silicon nitride plus 30ml of acetone, γ-glycid...

Embodiment 2

[0022] A thermally conductive insulating coating, the composition of which is as follows in parts by mass: 12 parts of epoxy-modified silicone resin, 3 parts of modified silicon nitride, 3.5 parts of modified alumina, 21 parts of acetone, 1.2 parts of cobalt naphthenate, mica powder 9 parts, 3 parts of calcium dihydrogen phosphate, 2 parts of polyamide epoxy curing agent, 1 part of potassium sodium tartrate, 1.3 parts of leveling agent.

[0023] Among them, the leveling agent is a mixture of polyether polyester modified organosiloxane and alkyl modified organosiloxane, the mass ratio of which is 1:1.1.

[0024] Wherein, the preparation method of modified silicon nitride is as follows: put γ-glycidyl etheroxypropyl trimethylsilane in a beaker, add distilled water and oxalic acid, adjust the pH value to 4-4.2, stir and dissolve, add acetone and Nano-silicon oxide, stirred at 30°C for 6h, and after standing for 6h, modified silicon nitride was obtained. The ratio of nano-silicon ...

Embodiment 3

[0026] A thermally conductive insulating coating, the composition of which is as follows in parts by mass: 15 parts of epoxy-modified silicone resin, 4 parts of modified silicon nitride, 5 parts of modified alumina, 25 parts of acetone, 1.5 parts of cobalt naphthenate, mica powder 10 parts, 5 parts of calcium dihydrogen phosphate, 2.5 parts of polyamide epoxy curing agent, 1.2 parts of potassium sodium tartrate, 1.8 parts of leveling agent.

[0027] Among them, the leveling agent is a mixture of polyether polyester modified organosiloxane and alkyl modified organosiloxane, the mass ratio of which is 1:1.2.

[0028] Wherein, the preparation method of modified silicon nitride is as follows: put γ-glycidyl etheroxypropyl trimethylsilane in a beaker, add distilled water and oxalic acid, adjust the pH value to 4.2-4.5, stir and dissolve, add acetone and Nano-silicon oxide, stirred at 30°C for 6 hours, and after standing for 6 hours, modified silicon nitride was obtained. The ratio ...

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Abstract

The invention relates to the technical field of coatings, in particular to a heat conduction insulation coating. The heat conduction insulation coating comprises the following components in parts by weight: 10 to 20 parts of epoxy modified organic silicon resin, 2 to 6 parts of modified silicon nitride, 3 to 6 parts of modified aluminium oxide, 20 to 30 parts of acetone, 1 to 1.6 parts of cobalt naphthenate, 8 to 12 parts of mica powder, 2 to 8 parts of monocalcium phosphate, 1.8 to 3.2 parts of polyamide epoxy curing agent, 0.8 to 1.8 parts of potassium sodium tartrate, and 1.2 to 2.4 parts of flatting agent. The heat conduction insulation coating has the advantages that compared with non-heat conduction coating layers, a heat conduction coating layer made of the heat conduction insulation coating has higher heat conduction capability, and can be used as a heat radiating coating layer; by using modified aluminum oxide and mica as the fillers, the content of inorganic components of modified aluminum oxide and the like in the insulation coating is increased, so that the heat-resistant property of the coating film layer can be effectively improved after the fillers are added; the mica filler is in a multi-layer crystal flake shape, the flakes are densely stacked, and the sealing property of the coating paint film can be improved, so that the atom transfer is decreased, and the electric property of paint film at high temperature is improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a thermally conductive and insulating coating. Background technique [0002] Insulating coatings are coatings with excellent electrical insulation properties. It has good electrical properties, thermal properties, mechanical properties and chemical properties. Insulating coatings are divided into two types: solvent-based and 600-1700°C water-based. The modified coating can form a layer of ceramic coating with high volume resistivity on the surface of the object to be coated, which can withstand a strong electric field without being broken down. The coating has high mechanical strength and good chemical stability, and is resistant to aging, water, and chemical corrosion; it also has mechanical and thermal shock resistance, and the coating can work continuously at the corresponding working temperature. [0003] At present, there are a variety of insulating coatings that can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/25C09D7/12
CPCC09D183/04C08K2201/011C08L2201/08C09D7/47C09D7/61C09D7/62C09D7/63C09D7/70
Inventor 汤海涛
Owner 汤海涛