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Preparation method of braided composite heat insulation layer

A technology of composite materials and heat insulation layers, which is applied in the direction of braids, textiles, and papermaking, can solve the problems of poor heat insulation effect of composite material heat insulation layers, and achieve light weight, good shock absorption performance, and low thermal conductivity. Effect

Active Publication Date: 2013-07-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a method for preparing a braided composite material heat insulation layer, which is used to solve the disadvantage of poor thermal insulation effect of the composite material heat insulation layer structure

Method used

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  • Preparation method of braided composite heat insulation layer
  • Preparation method of braided composite heat insulation layer
  • Preparation method of braided composite heat insulation layer

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Embodiment 1: Step 1: Make the fiber bundle into a square hollow rod with a certain flexibility;

[0015] Step 2: Weave the hollow fiber bundle rods on the required heat insulation components, and weave n (n≤10) hollow rods side by side to form a pattern ( figure 1 );

[0016] Step 3: heating to fully cure the incompletely cured composite material;

[0017] Step 4: Repair the heat insulation layer structure of the braided composite material to meet the requirements of use.

specific Embodiment approach 2

[0018] Embodiment 2: The difference from Embodiment 1 is: Step 1: The fiber bundle is made into a ring-shaped hollow rod with a certain flexibility in cross-section.

specific Embodiment approach 3

[0019] Embodiment 3: The difference from Embodiment 2 is: Step 2: Weave fiber bundle hollow rods on the required heat insulation components, and weave n (n≤10) hollow rods side by side to form a pattern ( figure 2 ).

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Abstract

The invention relates to a braided composite heat insulation layer and a preparation method thereof, and belongs to the technical field of braided composites. The method includes the following steps: (1) preparing a fiber bundle with a hollow structure by using a fusible material; (2) filling inert gas in the hollow structure of the fiber bundle and sealing segment by segment; (3) weaving a thermal-protective layer structure by using the fiber bundle; wherein a rotation structure or a hyperbolic structure is weaved by using the fiber bundle with a round fiber cross section; a curve structure or a planar structure with small curvature is weaved by the fiber bundle with a square fiber cross section; and a prism structure is weaved by using a polygon fiber bundle with a non-square cross section. The braided composite heat insulation layer has the advantages of good heat insulation effect, excellent in-plane mechanical property, light mass, low maintenance cost, excellent corrosion resistance and the like, and is difficult to damage and easy to process and form.

Description

technical field [0001] The invention relates to a preparation method of a braided composite material heat insulation layer, belonging to the technical field of braided composite materials. Background technique [0002] With the wide application of composite materials and the deepening of practice and theoretical research on raw materials, composite technology, interface theory, and composite effects, it provides a basis for the development of woven composite materials. The braided composite material is to weave the fiber bundles into the required preformed structural parts according to a certain order and rules, and then use it as a reinforced skeleton to impregnate and solidify the matrix material. The improvement of the structure of the braided material greatly improves the performance of the material. The integral braided system makes the material have no interlayer problem, has excellent anti-delamination ability, and has better resistance to cracking and fatigue than la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04C1/02D04C1/06
Inventor 王显峰黄志军文立伟还大军齐俊伟肖军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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