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Sandwich structure composite material and preparation method thereof

A composite material and sandwich structure technology, which is applied in the field of resin-based composite material structural parts, sandwich structure composite materials and their preparation, can solve the problems of inability to meet the longitudinal compression load of the vehicle chassis and insufficient lateral pressure performance, and achieve improvement Insufficient lateral pressure performance, high bending rigidity, and high production efficiency

Active Publication Date: 2017-11-07
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sandwich structure has good flat compression performance and high bending rigidity, which can well meet the requirements of the lateral load of the vehicle chassis, but its lateral compression performance is seriously insufficient and cannot meet the requirements of the longitudinal compression load of the vehicle chassis

Method used

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  • Sandwich structure composite material and preparation method thereof
  • Sandwich structure composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] Example 1 Preparation of hollow rectangular tube sandwich structure composite material flat plate

[0036] A sandwich structure composite material of the present invention, such as figure 1 As shown, the sandwich structure composite material includes an upper panel 12, a lower panel 13 and a core layer, the core layer is located between the upper panel 12 and the lower panel 13, the core layer includes 5 hollow rectangular tubes 4, and in the core layer, the hollow The rectangular tubes 4 are arranged parallel to each other (arranged at intervals), and a tube intercalation layer 14 is provided between adjacent hollow rectangular tubes 4 .

[0037] In this embodiment, the hollow rectangular tube 4 is made of unidirectional glass fiber reinforced unsaturated polyester resin-based composite material, the intertube layer 14 is made of glass fiber reinforced epoxy resin composite material, the upper panel 12 and the lower panel 13 Both are made of glass fiber reinforced epo...

Embodiment 2

[0050] Example 2 Preparation of Carbon Fiber Reinforced Hollow Rectangular Tube Sandwich Structure Composite Vehicle Underframe

[0051] A kind of sandwich structure composite material of the present invention (schematic structure can refer to figure 1 ), the sandwich structure composite material includes an upper panel 12, a lower panel 13 and a core layer, the core layer is located between the upper panel 12 and the lower panel 13, the core layer includes 54 hollow rectangular tubes 4, in the core layer, the hollow rectangular tube The tubes 4 are arranged at intervals in a parallel manner, and a tube intercalation layer 14 is provided between adjacent hollow rectangular tubes 4 .

[0052] In this embodiment, the hollow rectangular tube 4 is made of unidirectional carbon fiber reinforced epoxy resin composite material, the intertube layer 14 is made of glass fiber reinforced epoxy resin composite material, and the upper panel 12 and the lower panel 13 are both made of Made ...

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Abstract

The invention discloses a sandwich structure composite material and its preparation method. The sandwich structure composite material comprises an upper panel, a lower panel and a core layer, the core layer is positioned between the upper panel and the lower panel, the core layer comprises at least two hollow rectangular tubes, the hollow rectangular tubes are arranged in the core layer in parallel side by side, and an intertube interlayer is arranged between adjacent hollow rectangular tubes. The preparation method comprises the following steps: making the hollow rectangular tubes, making a preform, assembling a VIMP forming system, carrying out vacuum glue injection, carrying out co-cure forming, and carrying out subsequent treatment. The sandwich structure composite material has the advantages of light weight and increased lateral pressure resistance, and the preparation method has the advantages of simple operation and low cost.

Description

technical field [0001] The invention belongs to the field of fiber-reinforced resin-based composite materials and processing thereof, and relates to a sandwich structure composite material and a preparation method thereof, in particular to a resin-based composite material structural member with a unidirectional fiber-reinforced composite material hollow rectangular tube as a sandwich core. Background technique [0002] Since the emergence of sandwich structure composite materials in the 1940s, more and more attention has been paid to them. Its main characteristics are high bending stiffness and light structural weight, that is, the sandwich structure has high specific strength and specific modulus. Moreover, it has good fatigue resistance, vibration resistance, sound insulation and heat insulation, and has always been an important structural material in engineering applications. However, the traditional sandwich structure composite materials mostly use sandwich materials suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/02B29C70/36
CPCB29C70/02B29C70/36
Inventor 曾竟成刘钧肖加余彭超义
Owner NAT UNIV OF DEFENSE TECH
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