Composite honeycomb sandwich structure and styrofoam filling method for structure

A composite material and honeycomb interlayer technology, applied in the field of composite material manufacturing, can solve problems such as deformation

Active Publication Date: 2020-02-04
AVIC BASIC TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a novel composite honeycomb sandwich structure and a foam filling method used in the structure, to solve the problem of deformation caused by thermal expansion stress mentioned in the prior art

Method used

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  • Composite honeycomb sandwich structure and styrofoam filling method for structure
  • Composite honeycomb sandwich structure and styrofoam filling method for structure

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0024] In the description of the present invention, it should be noted that unless otherwise speci...

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Abstract

The invention relates to the technical field of composite material manufacture, in particular to a composite honeycomb sandwich structure and a styrofoam filling method for the structure. The sandwichstructure includes a composite inner skinning, a composite outer skinning, a honeycomb core material, styrofoam and shrinkage inhibiting members, wherein a filling cavity is formed between the composite inner skinning and the composite outer skinning, the filling cavity includes a honeycomb core material filling cavity and a styrofoam filling cavity, and the honeycomb core material is filled intothe honeycomb core material filling cavity; and the styrofoam is filled into the styrofoam filling cavity, and the shrinkage suppression members are bundled and put into the styrofoam. The prepreg unidirectional tape and the styrofoam are cured together, so that the problem of deformation caused by the internal stress which is brought by thermal expansion of the styrofoam is solved.

Description

technical field [0001] The invention specifically relates to the technical field of composite material manufacturing, in particular to a composite material honeycomb sandwich structure and a foam filling method used in the structure. Background technique [0002] Composite sandwich structure is currently known as the most economical material and has a significant strength-to-weight ratio. Compared with solid materials, the effective materials used in composite sandwich structures are only 1%-5% of the replaced materials. Although it is a lightweight material with great potential for low material consumption and low energy consumption, the sandwich structure of composite materials has the advantages of light weight, high bending stiffness and strength, strong resistance to instability, fatigue resistance, sound absorption, heat insulation, etc. A little bit, so in countries with developed aviation industry, composite sandwich structures have been widely used in the main and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B1/06B32B3/08
CPCB32B3/08B32B3/12
Inventor 袁超程文礼邱启艳
Owner AVIC BASIC TECH RES INST
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