Preparation process for pyramid lattice sandwich structure

A technology of a sandwich structure and a preparation process is applied in the field of preparation technology of a pyramid lattice sandwich structure, which can solve the problems of low production efficiency and complex process, and achieve the effects of high production efficiency, simple operation process and exertion of mechanical properties.

Inactive Publication Date: 2012-02-22
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 problems of complex process and low production efficiency for preparing fiber-reinforced composite pyramid lattice sandwich panels, and to provide a preparation process for pyramid lattice sandwich structures

Method used

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  • Preparation process for pyramid lattice sandwich structure
  • Preparation process for pyramid lattice sandwich structure
  • Preparation process for pyramid lattice sandwich structure

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0033] Specific implementation mode one: combine Figure 1-Figure 9 Describe this embodiment, the preparation process of a kind of pyramid lattice sandwich structure of this embodiment is as follows:

[0034] Step 1: Prepare the corrugated plate 1 with notches. The method for preparing the corrugated plate 1 with notches is a one-time molding hot pressing method. The specific process of the one-time molding hot pressing method is as follows:

[0035] Design and manufacture a mold that matches the upper mold 5 and the lower mold 6, the upper mold 5 is provided with a boss 5-1, the surface of the mold is cleaned with an acetone solution, and then the outer surface of the mold is treated with a release agent;

[0036] Lay the pre-impregnated non-weft cloth on the upper surface of the lower mold 6, and ensure that the fiber direction in the non-weft cloth is laid along the y-axis direction, that is, perpendicular to the direction of the channel x in the mould;

[0037] Close the ...

specific Embodiment approach 2

[0043] Specific implementation mode two: combination Figure 1-Figure 9 To illustrate this embodiment, in Step 1 of this embodiment, the non-weft fabric is carbon fiber, glass fiber, aramid fiber or woven fiber cloth prepreg. It is convenient to prepare the fiber-reinforced pyramid lattice core 3 . Other method steps are the same as those in the first embodiment.

specific Embodiment approach 3

[0044] Specific implementation mode three: combination Figure 10 To describe this embodiment, in Step 1 of this embodiment, the corners of the upper mold and the lower mold are provided with arc chamfers. The stress concentration generated by the mold during the preparation of the lattice structure is effectively reduced. Other method steps are the same as those in the first or second embodiment.

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Abstract

The invention discloses a preparation process for a pyramid lattice sandwich structure, and relates to the preparation process. The preparation process for the pyramid lattice sandwich structure solves the problems of complex process and low production efficiency in preparing a fiber-reinforced composite material pyramid lattice sandwich panel at present. The preparation process comprises the following steps of: firstly, preparing a corrugated plate with notches; secondly, cutting the corrugated plate with the notches into a plurality of corrugated strips with the same width as that of the notches of the corrugated plate with the notches along a y-axis direction; thirdly, mutually interlocking the plurality of corrugated strips, and bonding the interlocking positions by using glue to prepare a fiber-reinforced pyramid lattice core; and finally, respectively bonding the two end faces of the interlocked pyramid lattice core to two carbon fiber plates together to obtain the pyramid composite material lattice sandwich structure. The preparation process is applicable for the preparation of lattice sandwich structures.

Description

technical field [0001] The invention relates to a preparation process, in particular to a preparation process of a pyramid lattice sandwich structure. Background technique [0002] The lattice structure is a new type of structure designed to meet the requirements of lightweight and multi-functional engineering structures. It has the advantages of high specific stiffness, high specific strength, strong designability and meeting multi-functional requirements. The lattice structure can not only effectively bear external loads, but also be easy to wire, implant micro-devices, fill functional materials, etc., so this type of structure is an ideal structural platform for ultra-light and multi-functional structures. People can use this ultra-light structure platform to realize other different functions, such as a multifunctional structure integrating structure, thermal control and micro-devices; a multifunctional structure integrating structure, power supply and thermal control, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48
Inventor 吴林志张国旗马力泮世东王兵
Owner HARBIN INST OF TECH
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