High-strength flame-retardant ablation-resistant coating and preparation method thereof

An ablation-resistant, high-strength technology, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of difficult to achieve multiple use, poor product comprehensive performance, and coating thinning, and improve erosion resistance. Effects of ablative properties, excellent flame retardant properties, temperature resistance and ablative resistance

Active Publication Date: 2017-03-01
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional heat-resistant coatings use phenolic resin, epoxy resin, etc. as matrix resins, and rely on the addition of low-density fillers (cork powder, hollow glass microspheres, etc.) or high-temperature resistant fillers (alumina, zirconia, ceramic powder, etc.) to achieve The anti-heat insulation performance of the coating, the overall performance of the product is poor, and the coating is thicker, and the strength after ablation is low. After gas erosion and ablation, the coating is thinned and carbonized seriously, making it difficult to achieve the purpose of repeated use.

Method used

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  • High-strength flame-retardant ablation-resistant coating and preparation method thereof
  • High-strength flame-retardant ablation-resistant coating and preparation method thereof
  • High-strength flame-retardant ablation-resistant coating and preparation method thereof

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preparation example Construction

[0040] The preparation method of the high-strength flame-retardant and ablation-resistant coating of the present invention, the specific steps are as follows:

[0041] Weigh high-temperature-resistant resin, ablation-resistant filler, flame-retardant filler, reinforcing fiber, additives and solvent in the batching tank according to the formula, stir with a nylon rod for pre-mixing, and stir at 240-480r / min for 60-60~ 120min, or through a three-roller mill, first grind 1-3 times with a roll distance of 0.5-1mm, and then grind 3-5 times with a roll distance of 0.05-0.1mm.

[0042] The method of using the coating of the present invention is as follows: add 20-30 parts of polyamide curing agent and 0.3-2 parts of phenolic curing agent accelerator to the coating prepared according to the formula, and after fully stirring evenly, add an appropriate amount of solvent to adjust the viscosity according to the construction method , Squeegee coating, roller coating or spraying on the sur...

Embodiment 1

[0044] (1) Weigh 4.2kg of o-cresol novolac epoxy resin, 2kg of α-alumina, 1.5kg of fused zirconia, 0.5kg of antimony trioxide, 0.2kg of zinc borate, 2.5kg of high silica glass fiber, BYK- 0.06kg of 410 anti-sedimentation agent, 2kg of xylene and premixed with nylon stick.

[0045] (2) Grind the premixed material for 2 times on a three-roller mill with a roll distance of 0.5-1 mm, and then grind it 4 times with a roll distance of 0.05-0.1 mm to prepare a coating.

[0046] (3) Add 2kg of polyamide curing agent and 0.03kg of DMP-30 curing agent accelerator, stir well, and apply on the surface of the device as required.

[0047] Table 1 Embodiment 1 coating performance

[0048]

Embodiment 2

[0050](1) Weigh 3kg of phenol novolac epoxy resin, 1kg of brominated epoxy resin, 0.5kg of bisphenol A epoxy resin, 2kg of α-alumina, 1kg of fused zirconia, 0.5kg of mica powder, and 0.4kg of hydrotalcite , aluminum hydroxide 0.2kg, basalt fiber 2kg, chopped carbon fiber 0.3kg, Levelol839 leveling agent 0.03kg, BYK-410 modified urea anti-settling agent 0.04kg, xylene 1kg, butyl acetate 1kg, pre-stir with nylon rod mix.

[0051] (2) Grind the premixed material for 2 times on a three-roller mill with a roll distance of 0.5-1 mm, and then grind it 4 times with a roll distance of 0.05-0.1 mm to prepare a coating.

[0052] (3) Add 2.2kg of polyamide curing agent and 0.04kg of DMP-30 curing agent accelerator, stir well, and apply on the surface of the device as required.

[0053] Table 2 Embodiment 2 coating properties

[0054]

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Abstract

The invention relates to a high-strength flame-retardant ablation-resistant coating and a preparation method thereof. the coating comprises the following ingredients (by weight): 40-60 parts of high-temperature-resistant resin, 20-40 parts of an ablation-resistant filler, 5-15 parts of a flame-retardant filler, 15-35 parts of reinforced fiber, 0.5-2 parts of an auxiliary agent and 10-40 parts of a solvent. When the coating is used, 20-30 parts by weight of a polyamide curing agent and 0.3-2 parts by weight of a phenols curing agent promoter are added. Through a method of blade coating, roller painting and spraying for coating the surface of a device, a film is formed. In comparison with the prior art, the film formed by the coating can be resistant to instant high temperature of 1500 DEG C and above, has excellent flame-retardant effect and high bonding strength, and has been successfully applied to parts of guided missile launcher, etc. to effectively solve the thermal protection problem of the surface during missile launching, can be resistant to multiple times of ablation and scouring, and has repairability.

Description

technical field [0001] The invention relates to a high-strength flame-retardant and ablation-resistant coating and a preparation method thereof, belonging to the field of functional coatings. Background technique [0002] In recent years, as my country's national strength continues to increase, missile launchers and missile launch technology have been improved day by day, and the comprehensive performance of new missile weapons has been significantly improved. Realizing rapid maneuvering and precise strikes has become the common goal of missile weapons. With the modification of the missile launcher, a large amount of high-temperature gas will be generated during the thermal launch of the missile. Taking the US standard ship-to-air missile as an example, the temperature of the gas flow can be as high as 2400K, accompanied by high-speed gas scour. Traditional heat-resistant coatings use phenolic resin, epoxy resin, etc. as matrix resins, and rely on the addition of low-density...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D5/18C09D7/12
CPCC08L2201/02C08L2201/08C08L2205/025C08L2205/03C09D5/18C09D7/61C09D7/70C09D163/04C08K13/04C08K7/14C08K2003/2227C08K2003/2244C08K3/2279C08K2003/387C09D163/00C08K7/10C08K7/06C08K3/34C08K3/36
Inventor 尹雨晨孙伟华戚鹏贺晨刘剑锋
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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