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Preparation method of a co-cured high damping composite material

A technology of composite materials and damping materials, which is applied in the field of material science, can solve the problems of structural rigidity and strength reduction, and the damping layer is easy to peel off from the structure, so as to achieve the effect of improving the damping performance and not easy to peel off

Inactive Publication Date: 2010-07-28
张博明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the damping layer is easy to peel off from the structure during use, and the use of the damping layer, especially the constrained damping structure, easily leads to a substantial decrease in the overall structural stiffness and strength

Method used

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  • Preparation method of a co-cured high damping composite material
  • Preparation method of a co-cured high damping composite material
  • Preparation method of a co-cured high damping composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Example 1: Combining image 3 , a kind of preparation method of co-curing high damping composite material of the present invention, adopts the nitrile rubber that thickness is 0.3mm as the viscoelastic damping material, the composite material prepreg is T700 carbon fiber / epoxy resin 16 layers, the nitrile rubber layer It is laid between the 8th and 9th layers of composite material prepreg. The nitrile rubber layer and the composite material prepreg are co-cured by using the autoclave process and setting the temperature and pressure according to the curing conditions of the epoxy resin. Co-cured high damping composites. The tensile modulus of the nitrile rubber is 114.02GPa, and the modulus of the composite material prepreg without damping layer is 119.36GPa.

Embodiment 2

[0012] Example 2: Combining Figure 1-Figure 3 , The technical scheme adopted in the present invention is: prepare the viscoelastic damping material (such as rubber) into a rubber film whose thickness is equivalent to that of a single layer of composite material (or fiber fabric, prepreg). First, use acetone to remove the release agent and other substances remaining on the surface of the damping film, and then use certain tools to polish the surface of the damping film to make the surface of the damping film rough. The film is embedded in the composite material as a specific layer, and the viscoelastic damping diaphragm is cured together with the composite material to form a new type of composite material. The curing conditions of the composite material are set according to the curing process parameters provided by the resin supplier to set the curing temperature and pressure. Since the composite material contains a separate damping layer, the purpose of effectively improving...

Embodiment 3

[0013] Example 3: Binding Figure 1-Figure 3 , the invention can effectively improve the damping performance of the composite material while ensuring the strength and stiffness of the composite material, the damping material is not easy to peel off during use, and basically does not affect the mechanical properties and molding process of the resin-based composite material.

[0014] The nitrile rubber with a thickness of 0.3mm is used as the viscoelastic damping material, and the composite material prepreg (T700 carbon fiber / epoxy resin) has 16 layers, and the nitrile rubber layer is laid between the 8th and 9th layers of the prepreg. The nitrile rubber layer and the composite material are co-cured by using the autoclave process, setting the temperature and pressure according to the curing conditions of the epoxy resin, and co-curing to obtain a new viscoelastic damping layer co-cured composite material. The tensile modulus of the composite material with the nitrile rubber damp...

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Abstract

The invention provides a preparation method of a co-cured high damping composite material, which greatly improves the damping performance of a resin base composite materials under the condition that the strength and the rigidity are ensured. The method comprises the following steps: taking nitrile-butadiene rubber with the thickness of 0.3mm as a viscoelastic damping material, and T700 carbon fiber / 16 layers of epoxy resin as the prepreg of the composite material; laying the nitrile-butadiene rubber layer between the eighth layer and the ninth layer of the prepreg of the composite material; carrying out autoclave process on the nitrile-butadiene rubber layer and the prepreg of the composite material; setting the temperature and pressure according the curing condition of the epoxy resin; and co-curing to obtain the high damping composite material. The invention has the beneficial effects that the damping performance of the composite material is effectively improved under the condition that the strength and the rigidity of the composite material are ensured; the damping material is not easy to peel in the process of use; and the mechanical properties and the forming process of the resin base composite materials are not influenced.

Description

(1) Technical field [0001] The invention relates to material science, in particular to a preparation method of a co-cured high damping composite material. (2) Background technology [0002] The usual passive damping treatment methods include free damping structure and constrained damping structure. These two methods are post-processing and are often limited by many conditions such as the size, space and weight of the structure. In addition, the damping layer is easily peeled off from the structure during use, and the use of the damping layer, especially the constrained damping structure, tends to lead to a large decrease in the overall structural stiffness and strength. (3) Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a co-cured high-damping composite material that can greatly improve the damping performance of the resin-based composite material under the condition of ensuring strength and stiffness. [0004]...

Claims

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Application Information

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IPC IPC(8): B32B25/08B32B37/06B32B37/10
Inventor 张博明潘利剑
Owner 张博明
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