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Low-temperature-curing and superhigh-temperature-resistant coating, and preparation method and application of coating

An ultra-high temperature and low temperature technology, applied in the field of materials, can solve the problems of poor coating adhesion, high temperature oxidation resistance, high thermal shrinkage rate, etc., and achieve excellent adhesion, ultra-low thermal expansion rate and low thermal expansion rate.

Active Publication Date: 2017-05-31
GUANGZHOU WINHIGH CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a low-temperature curing ultra-high temperature resistant coating, which solves the problems of poor coating adhesion, high thermal shrinkage rate, high temperature oxidation resistance and high thermal expansion rate in the prior art

Method used

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  • Low-temperature-curing and superhigh-temperature-resistant coating, and preparation method and application of coating
  • Low-temperature-curing and superhigh-temperature-resistant coating, and preparation method and application of coating
  • Low-temperature-curing and superhigh-temperature-resistant coating, and preparation method and application of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A low-temperature curing ultra-high temperature resistant coating, its raw materials are composed of the following components by mass percentage: 20% hyperbranched polysilaborazane with a number average molecular weight of 2670g / mol and a polydispersity coefficient of 1.53, 30% with a particle size of 100nm composite filler, 4% triethylamine, 40% petroleum ether, 1% polydimethylsiloxane, 2% hexenyl bisstearamide, 3% polydimethylsiloxane , the sum of the mass percentages of each raw material component is 100%;

[0037] Wherein, the composite filler is composed of the following components by mass percentage: 50% graphite powder, 5% zirconium silicate, 15% boron carbide, 10% boron nitride, 15% zirconium boride, 15% Titanium boride, the sum of the mass percentages of each raw material component is 100%;

[0038] Wherein, the hyperbranched polysilaborazane structure used is:

[0039]

[0040] Concrete preparation steps are as follows:

[0041] Step 1, the synthesis of ...

Embodiment 2

[0050] A low-temperature curing ultra-high temperature resistant coating, its raw materials are composed of the following components by mass percentage: 30% hyperbranched polysilaborazane with a number average molecular weight of 2670g / mol and a polydispersity coefficient of 1.53, 30% with a particle size of 10nm composite filler, 3% dimethyl sulfide, 30% p-xylene, 3% dimethylpolysiloxane, 2% monoglyceride stearate, 2% polymethylphenyl Siloxane, the sum of the mass percentages of each raw material component is 100%;

[0051] Wherein, the composite filler is composed of the following components by mass percentage: 40% graphite powder, 10% zirconium silicate, 10% boron carbide, 15% boron nitride, 15% zirconium boride, 10% Titanium boride, the sum of the mass percentages of each raw material component is 100%;

[0052] Wherein, the hyperbranched polysilaborazane structure used is:

[0053]

[0054] Concrete preparation steps are as follows:

[0055] Step 1, step 2 are the s...

Embodiment 3

[0063] A low-temperature curing ultra-high temperature resistant coating, its raw materials are composed of the following components by mass percentage: 20% hyperbranched polysilaborazane with a number average molecular weight of 2670g / mol and a polydispersity coefficient of 1.53, 10% with a particle size of 1000nm composite filler, 6% palladium / carbon, 60% ethyl acetate, 2% simethicone, 1% polyethylene glycol 400, 1% melamine formaldehyde resin, the mass of each raw material component The sum of the percentages is 100%;

[0064] Wherein, the composite filler is composed of the following components by mass percentage: 60% graphite powder, 10% zirconium silicate, 5% boron carbide, 5% boron nitride, 5% zirconium boride, 15% Titanium boride, the sum of the mass percentages of each raw material component is 100%;

[0065] Wherein, the hyperbranched polysilaborazane structure used is:

[0066]

[0067] Concrete preparation steps are as follows:

[0068] Step 1, step 2 are the...

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Abstract

The invention discloses a low-temperature-curing and superhigh-temperature-resistant coating which comprises the following raw materials by mass percent: 20-30% of hyperbranched polyborosilazane, 10-30% of composite packing, 3-6% of catalyst, 30-60% of organic solvent, 1-3% of defoaming agent, 1-3% of dispersing agent and 1-3% of flatting agent, wherein the composite packing comprises the following components by mass percent: 40-60% of graphite powder, 5-15% of zirconium silicate, 5-15% of boron carbide, 5-15% of boron nitride, 5-15% of zirconium boride and 5-15% of titanium boride. In addition, the invention further provides a preparation method and an application of the low-temperature-curing and superhigh-temperature-resistant coating. The low-temperature-curing and superhigh-temperature-resistant coating has excellent adhesion, a low shrinkage rate, a low thermal expansion rate and high-temperature oxidation resistance, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a low-temperature curing ultra-high temperature resistant coating, a preparation method and an application thereof. Background technique [0002] With the rapid development of modern industry and national defense construction such as aerospace, aviation, and weapon industries, the requirements for high-temperature resistant coatings for equipment are getting higher and higher. Good mechanical properties and anti-corrosion properties of the equipment. [0003] However, existing high-temperature-resistant coatings have some disadvantages. For example, single-component high-temperature coatings require high-temperature curing (usually 180-200°C, 1-2h), which consumes a lot of energy during production and use, and cannot be applied to large-scale equipment; Although the two-component high-temperature coating can be cured at room temperature and saves energy, it is inco...

Claims

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Application Information

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IPC IPC(8): C09D183/16C09D7/12
CPCC08K2201/011C08K2201/014C08L2201/08C09D5/18C09D7/61C09D7/65C09D183/16C08L83/04C08L71/02C08L33/00C08K13/02C08K3/04C08K3/34C08K3/38C08K2003/385C08K5/20
Inventor 王敏君王元兵
Owner GUANGZHOU WINHIGH CHEM TECH CO LTD
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