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Fiber wet-molding method and heat-insulating tile structure for aerospace plane

A technology of wet forming and heat-insulating tiles, applied in the direction of body insulation, textiles and papermaking, can solve the problems of troublesome installation and replacement, high production cost, and achieve the effect of short production cycle, low cost, and reduced radiation heat transfer.

Active Publication Date: 2018-09-07
郎旗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition to the above shortcomings, the existing technology of thermal insulation tiles still has defects such as troublesome installation and replacement, and high production costs.

Method used

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  • Fiber wet-molding method and heat-insulating tile structure for aerospace plane
  • Fiber wet-molding method and heat-insulating tile structure for aerospace plane
  • Fiber wet-molding method and heat-insulating tile structure for aerospace plane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: The making of heat-insulating tile box-shaped tile shell (excluding sintering process)

[0050] The three working states of the forming mold of the heat-insulating tile box-shaped tile shell are as follows: Figure 1 to Figure 3 shown.

[0051] In the figure: 1 is the upper mold mounting plate and the die barrel integrated, referred to as the die barrel; 2 is the bottom plate of the die; 3 is the side plate of the die; 4 is the hydraulic cylinder; 5 is the punch; 6 is the side of the punch Template support; 7 is the integrated lower mold mounting plate and piston, referred to as the piston; 8 is the surrounding frame; 9 is the wet blank of the heat-insulating tile box-shaped tile shell.

[0052] Raw materials: chopped quartz fiber, alumina fiber, etc.

[0053] Step 1: fully stir the raw material and deionized water according to the weight ratio of 1:100 to make fiber slurry, the detailed process is omitted.

[0054] Step 2: Set the forming mold such as ...

Embodiment 2

[0062] Embodiment 2: Strengthen the making of packaging box

[0063] The three working states of the reinforced packaging box forming mold are as follows: Figure 4 to Figure 6 As shown, the difference from Example 1 is: 1. The size is much larger than the heat insulation tile shell; 2. The angle between the side wall and the bottom surface is greater than 90 degrees, and the formed wet billet can be directly taken off from the punch; 3. The raw material is pulp.

[0064] All the other are the same with embodiment 1.

Embodiment 3

[0065] Embodiment 3: the making of hollow floor square box

[0066] The three working states of the hollow floor square box forming mold are as follows: Figure 7 to Figure 9 As shown, its characteristic is that because the side wall of the square box has flanging, the axis of the driving hydraulic cylinder of the die side formwork has an included angle of 30 degrees with the horizontal plane, and the function is to exert pressure on the flanging of the side wall of the square box.

[0067] A certain specification of a square box product: 500*500*300 mm, the angle between the side wall and the bottom surface is 100 degrees, the wall thickness is 4 mm, and the flange width is 30 mm.

[0068] Raw materials: waste corrugated cardboard boxes.

[0069] Accessories: waterproofing agent.

[0070] Step 1: Pulping. The raw material and water are disintegrated into pulp in a hydraulic pulper according to the weight ratio of 1:100, and a waterproofing agent is added in the later stage...

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Abstract

The invention relates to a fiber wet-molding method and a heat-insulating tile structure for an aerospace plane. According to the invention, through implementation of a novel fiber wet-molding method,a fiber wet-molded product with high density and a box-like structure with vertical bottom surface and side surfaces is prepared; meanwhile, on the basis of the above-mentioned molding method, a high-density tile shell of a rigid ceramic fiber heat-insulating tile used for large-area heat protection for the aerospace plane is manufactured, and a low-density heat-insulating material is filled intothe interior of the high-density tile shell; and on the premise of no increase of the apparent density of a heat-insulating tile, rigidity and strength of the heat-insulating tile are greatly improved, and installation of the heat-insulating tile is simplified.

Description

technical field [0001] The present invention relates to a fiber wet forming method and an aerospace aircraft heat insulation tile structure. A fiber wet-formed product with a box-like structure; another object of the present invention is to manufacture a new type of rigid ceramic fiber thermal insulation tile for large-area thermal protection of aerospace aircraft based on the above forming method. Background technique [0002] Whether it is paper fiber or ceramic fiber, carbon fiber and other fibers, its wet forming is generally divided into negative pressure method and positive pressure method. The negative pressure method uses vacuum to suck the fiber through the holes (seams) on the molding surface The water in the slurry and the fiber are intercepted and formed by the covering net on the mold, and the positive pressure method achieves the above purpose by applying pressure to the fiber slurry, because the pressure applied to the fiber slurry is much greater than the vac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J3/00B64C1/40
CPCD21J3/00B64C1/40
Inventor 郎旗赵彩霞郎歌今
Owner 郎旗