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Epoxy resin combination, composite material and preparation method thereof

A technology of epoxy resin and composite material, applied in the field of epoxy resin composition and composite material, can solve the problems of limited application of epoxy resin system, high price, high viscosity, etc. The effect of low cost and simple preparation process

Inactive Publication Date: 2009-04-29
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process requires that the resin system must have the characteristics of low viscosity, low curing temperature, and good mechanical properties. However, the epoxy resins currently on the market generally have high viscosity or high price, which undoubtedly limits the application of epoxy resin systems in liquid molds. Application in molding process

Method used

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  • Epoxy resin combination, composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 1. Put the glass fiber unidirectional fabric flat in the blast drying oven, heat-treat at 100°C for 1 hour to remove moisture, and cut it according to the mold size after cooling;

[0061] 2. Clean the surface of the mold, apply a release agent, and place the cut glass fiber unidirectional fabric according to the laying direction: [0] s Sequentially lay in the mould. Then lay out the release cloth and guide cloth in order, insert the injection pipe and exhaust pipe, and finally seal the mold cavity with a vacuum bag, and seal the mold around with sealant;

[0062] 3. Add 10g hexanediol diglycidyl ether and 8g phenyl glycidyl ether low molecular weight epoxy compound to 100g WSR618 epoxy resin, stir them evenly, heat and stir at 70°C for 1 hour, add 2g KH550 after cooling and 0.1g 525, continue mixing. After cooling to 25°C, add 38g of amine curing agent (the mass ratio of isophoronediamine, polyetheramine T403, and 4'4-diaminodicyclohexylmethane is 3:16:1), and sti...

Embodiment 2

[0066] 1. Put the glass fiber two-way fabric flat in the blast drying oven, heat-treat at 100°C for 1 hour to remove moisture, and cut it according to the mold size after cooling;

[0067] 2. Clean the surface of the mold, apply a release agent, and place the cut glass fiber unidirectional fabric in the direction of laying: [+45] s Sequentially lay in the mould. Then lay out the mold release cloth and guide cloth in order, and insert the injection pipe and exhaust pipe, and finally seal the mold cavity with a vacuum bag, and seal the edge of the mold tightly with sealant;

[0068] 3. Repeat steps 3 and 4 in Example 1;

[0069] The tensile strength of the finally measured glass fiber bidirectional fabric / epoxy resin composite along the fiber direction is 450MPa, the tensile modulus is 21GPa, the compressive strength is 404MPa, and the compressive modulus is 25.3Gpa.

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Abstract

The application discloses an epoxy resin composition, a composite material and a preparation method thereof. The epoxy resin composition provided by the application comprises epoxy resin, small molecular compounds with one or a plurality of epoxy groups, as well as amine curing agents. The application has the advantages that high-performance epoxy resin is prepared by a method of blending and modifying common epoxy resin and adding additives, and a high-performance epoxy resin-based composite material is prepared by compounding epoxy resin with reinforcing material through a liquid composite molding process. The composite material has the advantages of simple preparation process and low price, and is beneficial to large amounts of popularization and industrialization. In addition, the composite material can also be used in automobile, ship, wind power blade and other civil composite material fields, can greatly reduce manufacturing cost, and can promote technical and industrial upgrading.

Description

technical field [0001] This application relates to an epoxy resin composition and its composite material, in particular to a preparation method of a high-performance epoxy resin composite material compounded by a liquid molding process and a reinforcing material through an epoxy resin composition . Background technique [0002] Since the advent of epoxy resin, due to its excellent physical and chemical properties, it has been widely used in powder coatings, floors, packaging materials, adhesives and other fields. It is especially useful in the field of composite materials. It can be combined with reinforcing materials (fibers and their fabrics) to form a multi-phase system solid material. The solid material gives full play to the characteristics and potential capabilities of each component material. Reasonable matching and synergistic effect present excellent new properties that the original single material (matrix material, reinforcement material) does not have, so as to m...

Claims

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Application Information

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IPC IPC(8): C08G59/20C08G59/50C08L63/00C08K7/02B29C70/40B29C70/54
Inventor 柴红梅王雷李鹏陈淳薛忠民高克强
Owner 北京玻钢院复合材料有限公司
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