Technology for improving compression performance of composite material laminated board

A composite material layer and pressing board technology, which is applied in the field of composite material laminate preparation, can solve the problems of different resin content and different glue absorption, and achieve the effect of increasing compression performance and expanding the application range

Inactive Publication Date: 2015-11-25
HENGSHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sometimes the same parts have the same number of layers, but the resin content of the final composi

Method used

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  • Technology for improving compression performance of composite material laminated board
  • Technology for improving compression performance of composite material laminated board
  • Technology for improving compression performance of composite material laminated board

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] Such as figure 2 , Pave 6 prepreg laminates on a 1200mm×2500mm flat glass mold with a size of 300mm×300mm. After the paving is completed, a layer of release cloth is placed on the prepreg blank, and three layers of suction Adhesive cloth, a layer of non-porous isolation film, a layer of breathable felt, and a layer of vacuum bag. Use yellow sealant to seal the vacuum bag. The breather shall completely cover the isolation film and the vacuum bag shall completely cover the breathable felt. The vacuum pump 4b passes through the vacuum joint 3b is connected to the vacuum bag 1b. At this time, the vacuum pump 4b is turned on and the vacuum is drawn. According to the vacuum table 2b, it can be observed that the actual vacuum is -0.97MPa. After the paving is completed, the laminate is cured. The thickness of the cured board was tested, and it was found that the thickness of the adhesive-absorbed laminate and the unadsorbed laminate were 3.3% thinner, and the ...

Example Embodiment

[0029] Example 2:

[0030] Select the more complicated parts for testing. The selected mold has a larger curvature, and then the auxiliary materials and the same number and specifications of the absorbent cloth are placed in the same order as in implementation 1, such as image 3 As shown, the vacuum pump 4c is connected to the vacuum bag 1c through the vacuum connector 3c. At this time, the vacuum pump 4c is turned on and the vacuum is drawn. The actual vacuum degree can be observed from the vacuum degree table 2c to be -0.97MPa. After the paving is completed, the laminate is cured . The thickness of the cured board was tested, and it was found that the thickness of the glue-absorbed laminate and the non-adhesive laminate were 3.75% thinner, and the compressive strength increased by 8.3%.

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PUM

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Abstract

The invention discloses a technology for improving the compression performance of a composite material laminated board. The technology comprises the steps that after a prepreg workblank is laid on a glass mold, a demolding cloth, a glass fiber adhesive absorbing cloth, an imperforate isolation film, ventilated felt and a vacuum bag are sequentially placed in place; the vacuum bag is sealed by a sealing adhesive, and the isolation film is completely covered with the ventilated felt which is completely covered with the vacuum bag; the vacuum bag is connected with a vacuum pump through a vacuum connector; the vacuum pump is started for vacuumizing; and finally the laminated board is solidified. On the conditions of neither changing a resin system formula nor increasing the difficulty of a prepreg production technology and a composite material laminated board manufacturing technology, the compression performance of the composite material laminated board is improved, and the material application range is expanded.

Description

technical field [0001] The invention belongs to the technical category of composite material laminated board preparation. Background technique [0002] Fiber-reinforced resin-based composite material is a new type of composite material, which has the advantages of high specific strength, high specific modulus, and corrosion resistance, and is widely used in wind energy, subsea oil fields, sports equipment, rail transit, military, aerospace and other fields . The types of reinforcing fibers are mainly divided into glass fiber, basalt fiber, aramid fiber and carbon fiber. The resin matrix is ​​mainly divided into thermosetting resins and thermoplastic resins. Due to the relatively simple molding process of thermosetting resins, it is the most widely used, mainly including epoxy resins, double horse resins, phenolic resins, vinyl resins and cyanate resins. At present, the processes for preparing fiber-reinforced resin-based composite materials mainly include autoclave process...

Claims

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Application Information

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IPC IPC(8): B29C70/44B29C70/54
CPCB29C70/44B29C70/54
Inventor 郑文建吴小元梁军辉
Owner HENGSHEN
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