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Method for preparing pyramid-shaped lattice sandwich plate by using fiber woven cloth

A technology of fiber weaving and pyramid, which is applied in the field of preparation of composite material pyramid lattice sandwich panels, can solve the problems of overlapping of pyramid lattice sandwich panels, achieve uniform thickness of rods, enhance structural strength, and improve mechanical properties Effect

Inactive Publication Date: 2011-01-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of preparing the pyramidal lattice sandwich panel of composite material, laying the fiber woven cloth cut into strips in the mold for hot pressing and forming, and the nodes of the prepared pyramid lattice sandwich panel There is a problem of overlapping, and a method for preparing pyramid-shaped lattice sandwich panels using fiber woven cloth is provided

Method used

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  • Method for preparing pyramid-shaped lattice sandwich plate by using fiber woven cloth
  • Method for preparing pyramid-shaped lattice sandwich plate by using fiber woven cloth
  • Method for preparing pyramid-shaped lattice sandwich plate by using fiber woven cloth

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specific Embodiment approach 1

[0014] Specific embodiment one: a kind of method that adopts fiber woven cloth to prepare pyramid-shaped lattice sandwich panel, the preparation process of described composite material pyramid-shaped lattice sandwich panel is:

[0015] Step 1. According to the structure and size of the mold, use a cutting machine or cutting machine to cut the bidirectional fiber woven fabric into a lattice structure that can be completely nested on the mold, and the cutting direction is along the fiber direction of the woven fabric;

[0016] Step 2, using mold cleaning agent or acetone solution to clean the outer surface of the mold, and then applying the sealing agent and the mold release agent to the outer surface of the mold in sequence;

[0017] Step 3, laying the fiber woven cloth with lattice structure obtained in step 1 layer by layer in the mold treated in step 2, and fixing the mold with a clamp;

[0018] Step 4. Place the mold fixed in step 3 in a hot press to cure it. The curing tem...

specific Embodiment approach 2

[0023] Specific embodiment 2: This embodiment is a further limitation of step 4 in the method for preparing a pyramid-shaped lattice sandwich panel using fiber woven cloth described in specific embodiment 1. In step 1, the fiber woven cloth adopts the 3234 model For the epoxy resin, the curing temperature described in step 4 is 120° C., the curing pressure is 0.5 MPa, and the curing time is 1.5 hours.

[0024] The curing temperature, curing pressure and curing time described in this embodiment are set according to the composition of the fiber woven cloth described in step 1, when the fiber woven cloth described in step 1 adopts carbon fiber weaving model T700, And when the synthetic fiber woven cloth is impregnated in the epoxy resin model 3234, the curing temperature of the mold placed in the hot press for curing in step 4 is 120°C, the curing pressure is 0.5Mpa, and the curing time is 1.5 hours.

specific Embodiment approach 3

[0025] Specific embodiment three: This embodiment is a further limitation of step 4 in the method for preparing a pyramid-shaped lattice sandwich panel by using fiber woven cloth described in specific embodiment one. In step one, the fiber woven cloth adopts the TDE85 model For epoxy resin, the curing temperature described in step 4 is 175°C, the curing pressure is 0.5Mpa, and the curing time is 3 hours.

[0026] The curing temperature, curing pressure and curing time described in this embodiment are set according to the composition of the fiber woven cloth described in step 1, when the fiber woven cloth described in step 1 adopts carbon fiber weaving model T700, And when the synthetic fiber woven cloth is impregnated in the TDE85 type epoxy resin, the curing temperature of the mold placed in the hot press for curing in step 4 is 175°C, the curing pressure is 0.5Mpa, and the curing time is 3 hours.

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Abstract

The invention discloses a method for preparing a pyramid-shaped lattice sandwich plate by using fiber woven cloth, which relates to a method for preparing a composite-material pyramid-shaped lattice sandwich plate. The preparation process of the composite-material pyramid-shaped lattice sandwich plate comprises the following steps: 1, cutting bidirectional fiber woven cloth into grid structures which can be completely embedded into a mould by a cutting machine or a cut-off machine according to the structure and size of the mould, wherein the cutting direction is the fiber direction of the woven cloth; 2, cleaning the mould; 3, laying the fiber woven cloth with the grid structures in the mould layer layer by layer, and fixing the mould; 4, putting the mould in a hot press for curing; 5, removing the cured mould to obtain a pyramid-shaped lattice core; and 6, sticking an upper composite-material layer plywood and a lower composite-material layer plywood on the upper and lower ends of the pyramid-shaped lattice core respectively to obtain the composite-material pyramid-shaped lattice sandwich plate. The invention is used for preparing the composite-material pyramid-shaped composite-material lattice sandwich plate.

Description

technical field [0001] The invention relates to a preparation method of a composite material pyramid lattice sandwich panel. Background technique [0002] Lattice sandwich panel is a structure that can meet the engineering indicators of light structure, strong function and other excellent mechanical properties. The lattice sandwich panel is a material composed of upper and lower layers of high-strength, high-modulus thin plates and a thicker lightweight lattice core in the middle. [0003] The materials used in the existing lattice sandwich panels are mostly metal materials. Compared with the lattice sandwich panels prepared by traditional metal materials, the lattice sandwich panels prepared by composite materials have higher specific strength and specific stiffness, and It has stronger designability. At present, when fiber woven cloth is used as a composite material to prepare a pyramid-shaped lattice sandwich panel, it is necessary to pre-cut the fiber woven cloth into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
Inventor 熊健马力吴林志王兵张国旗
Owner HARBIN INST OF TECH
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