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A kind of preparation method of gradient density resin composite material prefabricated body

A technology of resin composite materials and gradient density, applied in chemical instruments and methods, synthetic resin layered products, transportation and packaging, etc., can solve problems such as catastrophe, interface problems, and heat protection system failure, and achieve simple and The effect of eliminating interface problems

Active Publication Date: 2020-10-09
HUBEI FEILIHUA QUARTZ GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gradient density material is divided into several layers on the plane composition. If scientific and reasonable methods cannot be adopted to make the function and performance of the gradient density material show a reasonable gradient change, it will cause interface problems. Thermal system failure with catastrophic consequences

Method used

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  • A kind of preparation method of gradient density resin composite material prefabricated body
  • A kind of preparation method of gradient density resin composite material prefabricated body
  • A kind of preparation method of gradient density resin composite material prefabricated body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dissolve boron phenolic formaldehyde and barium phenolic formaldehyde with alcohol to obtain a non-ceramic resin solution (slurry), wherein the mass ratio of alcohol, boron phenolic formaldehyde and barium phenolic formaldehyde is: 1.0:1.0:1.0 After the dissolution is completed, stir evenly at room temperature , until the solution (slurry) has no precipitation and is uniform in color; that is, no precipitation or other visible foreign matter is allowed in the obtained non-porcelain resin solution (slurry), and it is set aside.

[0020] According to the mass ratio of non-ceramic resin solution: boron nitride 128.8:8.5, add boron nitride to the non-ceramic resin solution, then stir evenly at room temperature until there is no large group accumulation, and obtain micro-ceramic resin solution slurry, That is, no agglomerated particles or other visible foreign matters are allowed to exist in the obtained microceramic resin solution; set aside.

[0021] Place a-type high-dens...

Embodiment 2

[0040] Dissolve boron phenolic formaldehyde and barium phenolic formaldehyde with alcohol to obtain a non-ceramic resin solution (slurry), wherein the mass ratio of alcohol, boron phenolic formaldehyde and barium phenolic formaldehyde components is: 1.0:1.0:0.8; after the dissolution is completed, stir at room temperature Uniformly, until the solution has no precipitation and is uniform in color; that is, no precipitation or other visible foreign matter is allowed in the obtained non-porcelain resin solution, and it is set aside.

[0041] According to the mass ratio of non-ceramic resin solution: boron nitride 128.8:8.0, add boron nitride to the non-ceramic resin solution; then stir evenly at room temperature until there is no large group accumulation, and obtain micro-ceramic resin solution slurry, That is, no agglomerated particles or other visible foreign matters are allowed to exist in the obtained microceramic resin solution; set aside.

[0042] Place a-type high-density ...

Embodiment 3

[0061] Dissolve boron phenolic formaldehyde and barium phenolic formaldehyde with alcohol to obtain a non-ceramic resin solution (slurry), wherein the mass ratio of alcohol, boron phenolic formaldehyde and barium phenolic formaldehyde is: 1.0:1.1:0.9 After the dissolution is completed, stir evenly at room temperature , until the solution has no precipitation and is uniform in color; that is, no precipitation or other visible foreign matter is allowed in the obtained non-porcelain resin solution, and it is set aside.

[0062] According to the mass ratio of non-ceramic resin solution: boron nitride 128.8:8.2, add boron nitride to the non-ceramic resin solution; then stir evenly at room temperature until there is no large group accumulation to obtain micro-ceramic resin solution slurry, That is, no agglomerated particles or other visible foreign matters are allowed to exist in the obtained microceramic resin solution; set aside.

[0063] Place a-type high-density 2.5D quartz fibe...

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Abstract

The invention relates to a preparation method of a gradient density resin composite preform and belongs to the technical field of ablation thermal protective materials of hypersonic flight vehicles. Aprepared non-vitrified resin solution and vitrified resin dissolving pulp are paved on quartz fiber woven cloth respectively, a-type micro-vitrified prepreg, b-type micro-vitrified prepreg, c-type micro-vitrified prepreg and d-type micro-vitrified prepreg are prepared respectively after drying, the prepregs are paved in a forming cavity of a paving and stitching tool, and a finished product of the gradient density resin composite is prepared with a vacuum-pumping compacting method. The prepared gradient density material is divided into multiple layer in the aspect of plane composition, all layers of materials are in uniform transition, so that the interface problem is eliminated, the requirements of a thermal protection system of a hypersonic flight vehicle for an anti-ablation and anti-shear surface layer, a low-density and efficient thermal-insulating inner layer and a buffering and transition middle layer are realized, and the requirements of lightweight, low ablation and efficientthermal insulation of the thermal protection system of the hypersonic flight vehicle are met.

Description

technical field [0001] The invention relates to a method for preparing a gradient density resin composite material prefabricated body, belonging to the technical field of ablation heat-resistant materials for hypersonic aircraft. Background technique [0002] When a hypersonic vehicle flies in a dense atmosphere, it is subjected to an aerodynamic heating environment with high enthalpy, medium and low heat flow, and long endurance. Traditional ablative heat-resistant materials cannot give full play to the advantages of ablation and heat absorption under such thermal environmental conditions, and due to the high thermal conductivity and density of the material, they cannot meet the requirements of light weight and low-heat protection systems for hypersonic aircraft. corrosion and efficient thermal insulation requirements. [0003] Gradient density composite material is a new type of ablative heat-resistant material. It is a material whose function and structure change contin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B5/18B32B5/06B32B37/10B32B27/04C08L61/14C08K3/38C08K7/10C08J5/24B64C1/00
Inventor 王振华范开春吴家炳孙绯陈兴峰张素婉张志斌刘军尹正帅廖乐峰谢丽君王稳
Owner HUBEI FEILIHUA QUARTZ GLASS
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