High interlaminar shear strength epoxy resin base composite material and preparation method thereof

A technology of epoxy resin and shear strength, which is applied in the field of preparation of epoxy resin-based composite materials with shear strength between high-rise buildings, can solve the problems of only 90.6MPa, many types of raw materials, fiber damage, etc., and achieve the improvement of mechanical properties, Easy to promote, combined with strong effects

Inactive Publication Date: 2009-05-06
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantage is that heat treatment is required in the process of configuring prepreg, there are many types of raw materials used, the process is complicated, and the maximum interlayer shear strength can only reach 84MPa
Invention patent CN 1850903A conducts high-energy radiation on carbon fiber in a closed container, and then composites it with epoxy resin after acrylic acid grafting treatment under negative pressure to form a composite material. Although it can improve the interfacial bonding performance of the composite material, high-energy ray radiation will The fiber damage makes the interlaminar shear strength of the composite material only 90.6MPa

Method used

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  • High interlaminar shear strength epoxy resin base composite material and preparation method thereof
  • High interlaminar shear strength epoxy resin base composite material and preparation method thereof
  • High interlaminar shear strength epoxy resin base composite material and preparation method thereof

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Effect test

Embodiment 1

[0018] Embodiment 1: the epoxy resin (AG-80 of 95 mass parts, produced by Shanghai Resin Factory), the phenolic resin 2123 (produced by Wuxi Guangming Chemical Factory) of 5 mass parts, the DDS of 30 mass parts, the acetone mixing and dissolving of 80 mass parts A homogeneous matrix solution is then poured into the dipping tank. Let 60 parts by mass of PAN-based carbon fiber pass through the above-mentioned matrix solution for 8 seconds to make a unidirectional non-woven fabric, and then place it at room temperature for 12 hours to completely volatilize the acetone in the glue solution, stack it in the same direction to form a plate, and then place the sample Put it into a mold and place it in an autoclave for curing (the curing process conditions are as follows: pre-evacuate to -0.1MPa, then raise the temperature to 100°C at a heating rate of 1°C / min, and pass N 2 pressurize to 0.4MPa, and continue to heat up to 130°C for pre-curing for 40 minutes; continue to heat up and pos...

Embodiment 2

[0019] Embodiment 2: the epoxy resin (AG-80 of 90 mass parts, produced by Shanghai Resin Factory), the phenolic resin 2123 (produced by Wuxi Guangming Chemical Factory) of 10 mass parts, the DDS of 30 mass parts, the acetone mixed dissolving of 100 mass parts A homogeneous matrix solution is then poured into the dipping tank. Let 70 parts by mass of pitch-based carbon fiber pass through the above matrix solution to make a unidirectional non-woven fabric, and then place it at room temperature for 24 hours to completely volatilize the acetone in the glue solution, stack it in the same direction to form a plate, and then put the sample on Put it into a mold and place it in an autoclave for curing (the curing process conditions are as follows: pre-evacuate to -0.05MPa, then raise the temperature to 100°C at a heating rate of 4°C / min, and feed N 2 Pressurize to 0.8MPa, continue to heat up to 150°C for pre-curing, time 30min; continue to heat up, carry out post-curing at 220°C, time...

Embodiment 3

[0020] Embodiment 3: the epoxy resin (AG-80 of 75 mass parts, produced by Shanghai Resin Factory), the phenolic resin 2132 (produced by Wuxi Guangming Chemical Factory) of 25 mass parts, the DDS of 30 mass parts, the acetone mixed dissolving of 120 mass parts A homogeneous matrix solution is then poured into the dipping tank. Let 65 parts by mass of PAN-based carbon fiber pass through the above matrix solution to make a unidirectional non-woven fabric, and then place it at room temperature for 15 hours to completely volatilize the acetone in the glue solution, stack it in the same direction to form a plate, and then place the sample Put it into a mold and put it in an autoclave for curing (the curing process conditions are as follows: pre-evacuate to -0.08MPa, then raise the temperature to 95°C at a heating rate of 2°C / min, and feed N 2 Pressurize to 0.6MPa, continue to heat up to 140°C for pre-curing for 35 minutes; continue to heat up, and perform post-curing at 210°C for 2....

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Abstract

The invention provides a high interlaminal shear strength epoxy resin based composite material, which consists of the following materials in mass portion: 75 to 95 portions of epoxy resin, 5 to 25 portions of phenolic resin and 80 to 120 portions of acetone, hardening agent and carbon fiber, wherein the adding amount of the hardening agent is 30 percent of the total weight of the epoxy resin and the phenolic resin, and the adding amount of the carbon fiber is 60 to 70 percent of the total weight of the epoxy resin and the phenolic resin. The epoxy resin, the phenolic resin, the acetone and the hardening agent are mixed and dissolved into homogeneous matrix solution, and the carbon fiber is soaked in the matrix solution to prepare one-way laid fabric, and the one-way laid fabric is hardened. The material has the advantages of high interlaminal shear strength and simple process.

Description

technical field [0001] The invention belongs to a composite material and a preparation method, in particular to a preparation method of an epoxy resin-based composite material with inter-layer shear strength. technical background [0002] Compared with other fibers, carbon fiber has the characteristics of high strength and elastic modulus, and light weight, so it is widely used in the manufacture of composite products in various fields such as aerospace and sports. Carbon fibers are generally used as reinforcing materials for composite products with thermosetting resins or thermoplastic resins as matrix resins. As the matrix resin, thermosetting resins are often used because of their ease of molding and handling. [0003] Carbon fiber / resin-based composite material has a series of excellent properties such as high specific strength, high specific modulus, corrosion resistance, ablation resistance, fatigue resistance and dimensional stability. It is one of the representative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/06C08K7/06C08K5/18C08K5/41C08J5/24B29C70/34B29C70/54
Inventor 李开喜何宏伟
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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