Novel ablation heat-resistant coating and preparation method thereof

A technology of heat-resistant coatings and raw materials, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of insufficient thermal protection of high-performance tactical missiles, and achieve the effects of excellent comprehensive performance, low thermal conductivity and low density

Active Publication Date: 2020-09-01
贵州航天风华精密设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of insufficient thermal protection of high-performance tactical missiles in the prior art, and at the same time provide thermal insulation protection on civilian high-temperature equipment, the present invention provides a new type of ablation heat-resistant coating and its preparation method

Method used

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  • Novel ablation heat-resistant coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Formula: Component A: 16kg of silicone resin, 8kg of phenolic epoxy resin, 8kg of fumed nano-silica, 20kg of low-density and low-conductivity filler, 25kg of additives; Component B: the mass of imidazole is 2% of that of Component A.

[0030] Preparation method: (1) Premixing: Measure silicone resin, phenolic epoxy resin, fumed nano-silica, low-density and low-conductivity filler and additives according to the formula, and stir evenly with a nylon rod to obtain a mixture;

[0031] (2) Dispersion: Add the pre-mixed mixture into the disperser, disperse at a speed of 800r / min for 50min, and then disperse at a speed of 1000r / min for 100min at a high speed to obtain a dispersion;

[0032] (3) Sand milling: Put the dispersed material into the sand mill, and use glass beads or zirconia beads of φ1.5~φ3 as the sanding medium. During the sanding process, the viscosity of the material is controlled to be 25s, and the particle size is ≤40μm. can;

[0033] (4) Filtration: Filter t...

Embodiment 2

[0042] Formula: A component: silicone resin 32kg, phenolic epoxy resin 16kg, fumed nano silica 12kg, low density and low conductivity filler 30kg, imidazole curing agent 3kg, auxiliary agent 30kg; B component: 2-methylimidazole The mass is 3% of A component.

[0043] Preparation method: (1) Premixing: Measure silicone resin, phenolic epoxy resin, fumed nano-silica, low-density and low-conductivity filler and additives according to the formula, and stir evenly with a nylon rod to obtain a mixture;

[0044] (2) Dispersion: Add the pre-mixed mixture into the disperser, disperse at a speed of 1000r / min for 60min, and then disperse at a high speed of 1200r / min for 120min to obtain a dispersion;

[0045] (3) Sand milling: Put the dispersed material into the sand mill, and use glass beads or zirconia beads of φ1.5~φ3 as the sanding medium. During the sanding process, the viscosity of the material is controlled to be 45s, and the particle size is ≤40μm. can;

[0046] (4) Filtration:...

Embodiment 3

[0055] Formula: Component A: 22kg of silicone resin, 10kg of phenolic epoxy resin, 9kg of fumed nano-silica, 23kg of low-density and low-conductivity filler, 2kg of imidazole curing agent, 27kg of additives; Component B: 2-ethylimidazole The mass of A component is 2.5%.

[0056] Preparation method: (1) Premixing: Measure silicone resin, phenolic epoxy resin, fumed nano-silica, low-density and low-conductivity filler and additives according to the formula, and stir evenly with a nylon rod to obtain a mixture;

[0057] (2) Dispersion: Add the pre-mixed mixture into the disperser, disperse at a speed of 800r / min for 60min, and then disperse at a speed of 1000r / min for 120min at a high speed to obtain a dispersion;

[0058] (3) Sand milling: Put the dispersed material into the sand mill, and use glass beads or zirconia beads of φ1.5~φ3 as the sanding medium. During the sanding process, the viscosity of the material is controlled to be 35s, and the particle size is ≤40μm. can;

...

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Abstract

The invention relates to the technical field of coating preparation, and in particular to a novel ablative heat-resistant coating and a preparation method thereof. By reasonably proportioning organic silicon resin, novolac epoxy resin, gas phase nano-silicon dioxide, low-density and low-conductivity filler and additive adopted as component materials A and an imidazole curing agent adopted as a component material B and then adjusting technological parameters, the coating is prepared. The coating can resist the high temperature of 750 DEG C, the density is less than 1g / cm<3>, the thermal conductivity is less than 0.15W / m.K, the static insulated temperature is lower than 250 DEG C, and the novel ablative heat-resistant coating can be applied to heat-resistant materials for the thermal protection of the bodies of medium-and-high-Mach tactical missiles and thermal insulation protective materials for petrochemical high-temperature equipment.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a novel ablation heat-resistant paint and a preparation method thereof. Background technique [0002] With the improvement of the comprehensive performance of advanced tactical missiles in terms of high maneuverability, large overload, flight speed, hit accuracy and defense penetration capability, designers must take into account the weight of the carrier, the structural strength of the material and the safety of the internal components of the carrier; especially the tactical The missile body is mostly made of alloy materials (cabin body, fairing, rudder surface, wing surface). The mechanical properties of the missile structure material drop sharply when the temperature is greater than 300 ° C. The heat insulation protection of the missile is the solution to the above problems. Effective Ways. [0003] The working temperature of tactical missiles can reach over 1000°C....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D163/04C09D7/61
CPCC08K2201/011C08L2201/08C08L2205/03C09D5/18C09D183/04C08L63/04C08K13/04C08K3/36C08K7/24C08K7/26C08K13/06C08K9/04C08K3/346
Inventor 张绍波杨晓明胡美羚李江何晶
Owner 贵州航天风华精密设备有限公司
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