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High-strength environment-friendly solvent-free epoxy resin mould pressing material and preparation method and application thereof

An epoxy resin and solvent-free technology, which is applied in the field of epoxy resin-based compositions, can solve problems such as inconvenient costs, environmental pollution, and danger, and achieve the effects of improving production efficiency, reducing costs, and high strength

Active Publication Date: 2015-08-19
石家庄利鼎电子材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of flammable and explosive solvents such as acetone are used in the production process of prepreg, which pollutes the environment and is dangerous; at the same time, the produced prepreg must be stored in a low temperature environment, which is inconvenient and expensive

Method used

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  • High-strength environment-friendly solvent-free epoxy resin mould pressing material and preparation method and application thereof
  • High-strength environment-friendly solvent-free epoxy resin mould pressing material and preparation method and application thereof
  • High-strength environment-friendly solvent-free epoxy resin mould pressing material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The high-strength environment-friendly solvent-free epoxy resin molding material of this embodiment is prepared according to the following steps by taking the raw materials of serial numbers 1 and 2 in Table 1:

[0027] 1. Preparation of resin system: Mix epoxy resin E-20, epoxy resin E-51 and glycidyl ether, heat up to 100°C, and stir for 3 hours to prepare the resin system;

[0028] 2. Preparation of curing agent system: Mix methyltetrahydrophthalic anhydride and curing accelerator, heat up to 60°C, and stir for 3 hours to prepare the curing agent system;

[0029] 3. Mix the resin system prepared in step 1 and the curing agent system prepared in step 2 evenly to obtain a mixed solution, then add chopped fibers into the mixed solution and mix evenly to obtain a high-strength environmentally friendly solvent-free epoxy resin Resin molding compound.

Embodiment 2

[0031] The high-strength environment-friendly solvent-free epoxy resin molding compound of this embodiment is prepared according to the following steps by taking the raw materials of serial numbers 3 and 4 in Table 1:

[0032] 1. Preparation of resin system: Mix epoxy resin E-20, epoxy resin E-51 and glycidyl ether, heat up to 150°C, and stir for 1 hour to prepare the resin system;

[0033] 2. Preparation of curing agent system: Mix methyltetrahydrophthalic anhydride and curing accelerator, heat up to 90°C, and stir for 1 hour to prepare the curing agent system;

[0034] 3. Mix the resin system prepared in step 1 and the curing agent system prepared in step 2 evenly to obtain a mixed solution, then add chopped fibers into the mixed solution and mix evenly to obtain a high-strength environmentally friendly solvent-free epoxy resin Resin molding compound.

Embodiment 3

[0036] The high-strength environment-friendly solvent-free epoxy resin molding material of this embodiment is prepared according to the following steps by taking the raw materials of serial numbers 5, 6, and 7 in Table 1:

[0037] 1. Preparation of resin system: Mix epoxy resin E-20, epoxy resin E-51 and glycidyl ether, heat up to 125°C, and stir for 2 hours to prepare the resin system;

[0038] 2. Preparation of curing agent system: Mix methyltetrahydrophthalic anhydride and curing accelerator, heat up to 75°C, and stir for 2 hours to prepare the curing agent system;

[0039] 3. Mix the resin system prepared in step 1 and the curing agent system prepared in step 2 evenly to obtain a mixed solution, then add chopped fibers into the mixed solution and mix evenly to obtain a high-strength environmentally friendly solvent-free epoxy resin Resin molding compound.

[0040] The amount of each raw material in the above examples is shown in Table 1. In the table, benzyldimethylamine ...

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Abstract

The invention discloses a high-strength environment-friendly solvent-free epoxy resin mould pressing material and a preparation method and application thereof, relates to a composition using epoxy resin as substrate, in particular to a mould pressing material using the epoxy resin as substrate for manufacturing gauge aprons of railway rails. The invention aims to provide epoxy resin mould pressing materials high in strength, free of solvent, fast in curing and convenient to use and its preparation method and application. The high-strength environment-friendly solvent-free epoxy resin mould pressing material comprises, by weight, 100 parts of epoxy resin E-20, 30-60 parts of epoxy resin E-51, 1-10 parts of glycidyl ether, 60-80 parts of methyl tetrahydrophthalic anhydride, 1.5-4.5 parts of curing accelerator and 300-800 parts of chopped fibers. The epoxy resin mould pressing material is high in strength, can replace metal materials and achieves corrosion resistance and insulation. In addition, the epoxy resin mould pressing material is free of flammable and combustible solvent, safe, environment friendly and convenient to use and is used for the manufacturing field of the gauge aprons of the railway rails.

Description

technical field [0001] The invention relates to a composition with epoxy resin as base material, in particular to a molding compound with epoxy resin as base material for making gauge baffles of railway rails. Background technique [0002] The gauge baffles of the current railway rails are mostly made of metal, which are seriously corroded and not insulated. Other gauge baffles produced with high-strength resin-based composite materials are produced with prepregs, which use a lot of flammable and explosive solvents such as acetone in the production process, which pollutes the environment and is dangerous; at the same time, the produced prepregs Due to the mixture of dicyandiamide and epoxy resin in the dipping cloth, it must be stored in a low temperature environment, which is inconvenient and expensive. [0003] There are two common types of molding materials: [0004] 1. Molding material of unsaturated polyester. This kind of product has a strong odor and serious styren...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08G59/42C08J5/04
Inventor 刘占峰张云霄
Owner 石家庄利鼎电子材料有限公司