Preparation method of high-temperature composite material sample

A composite material and sample preparation technology, applied in the field of composite materials, can solve the problems of reinforcement sheet damage, bonding surface fracture, bonding interface internal stress, etc., and achieve the effect of avoiding damage

Active Publication Date: 2015-11-04
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The invention provides a method for preparing a high-temperature composite material sample, which solves or partially solves the problems of internal stress at the bonding interface in the prior art, the occurrence of bonding surface fracture, and the failure of the reinforcement sheet. Technical issues on the performance of tensile specimens and compression specimens

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  • Preparation method of high-temperature composite material sample
  • Preparation method of high-temperature composite material sample

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Embodiment Construction

[0018] see figure 1 , the embodiment of the present invention provides a high-temperature composite sample preparation method comprising the following steps:

[0019] Step 1: Carry out mold design and processing according to the sample structure.

[0020] Step 2, preforming the reinforcing sheet on the lower surface of the mold, the material of the reinforcing sheet on the lower surface is the same as that of the sample.

[0021] Step 3, preform the test plate.

[0022] Step 4, preforming the reinforcement sheet on the upper surface of the mold, the material of the reinforcement sheet on the upper surface is the same as that of the sample.

[0023] Step 5, performing RTM molding on the entire test plate to obtain a high-temperature composite material sample.

[0024] Step 6, processing the test plate.

[0025] Step 1 is described in detail.

[0026] Combining the structural shape of the sample and the overall RTM injection molding, the mold is designed, and the RTM is the...

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Abstract

The present invention discloses a preparation method of a high-temperature composite sample and belongs to the technical field of composite materials. The preparation method of the high temperature composite material comprises the steps of: designing and processing a mold according to the sample structure; pre-forming a reinforcement sheet on the lower surface of the mold, wherein the reinforcement sheet on the lower surface is made of the same material as the sample; pre-forming a test board; pre-forming the reinforcement sheet on the upper surface of the mold, wherein the reinforcement sheet on the upper surface is made of the same material as the sample; conducting RTM forming on the whole test board to obtain high-temperature composite material sample; and processing the on test board. The reinforcement sheets and the body do not have adhesive secondary curing interface, the adhesive surface shear strength is consistent with test piece body material layer, so as to avoid the destruction of the adhesive surface in the test process.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing high-temperature composite material samples. Background technique [0002] As the application range of structural composite materials becomes wider and wider, and the use temperature of materials is higher and higher, higher requirements are put forward for the temperature resistance and mechanical properties of composite materials. Therefore, while introducing new materials, it is necessary to test the tensile properties and compression properties of unidirectional fiber composite materials under high temperature conditions to lay a foundation for product structure design and layup design. [0003] Traditional uniaxial tensile specimens use aluminum sheets as reinforcing sheets and are bonded with adhesives. This method works well when tested at room temperature or low temperature, but when the test temperature reaches 100°C or even 200°C, or e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 饶立凤罗海涛王勇涛
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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