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Modified epoxy resin and preparation method thereof

An epoxy resin and modification technology, which is applied in building components, building insulation materials, construction, etc., can solve problems that have not been well solved and high cost, achieve good social benefits, improve low-temperature brittle performance, and reduce environmental pollution Effect

Inactive Publication Date: 2012-07-25
山西永力实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the research on epoxy asphalt in our country is still in its infancy. Since the selection of compatibilizer, curing agent, diluent, accelerator and reinforcing agent in epoxy asphalt materials has not been well resolved, literature reports, epoxy asphalt binder The weight ratio of epoxy resin and asphalt in the binder is 1:2.8 and 1:2.45, which is far lower than the ratio of 1:5.85 and 1:4.45 of imported epoxy asphalt, so the cost is high and the material performance is far lower than imported products

Method used

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  • Modified epoxy resin and preparation method thereof

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Effect test

Embodiment 1

[0018] Modified epoxy resin, the raw materials are composed according to the following parts by weight: 5 parts of epoxy resin, 4 parts of furfuryl alcohol mud, 1 part of unsaturated polyester resin, and 1 part of furfuryl alcohol.

[0019] The preparation method of modified epoxy resin: add 50% of the epoxy resin by weight and the furfuryl alcohol mud and furfuryl alcohol into the reaction kettle, then vacuumize until the vacuum degree is 0 ~ -20KPa, and pass in nitrogen for two Replace the air once, heat up to 107°C after melting, and dehydrate for 60 minutes; after the nitrogen in the reactor is emptied, cool down to 92°C, add the remaining epoxy resin, stir for 30 minutes, and then add solid sodium hydroxide catalyst for 30 minutes After the addition is complete, react for 60 minutes after the addition, then raise the temperature to 150 ° C, and continue the reaction for 90 minutes; finally add polyester and stir for 60 minutes, and then neutralize it to 6.5 with sodium hyd...

Embodiment 2

[0021] Modified epoxy resin, the raw materials are composed according to the following parts by weight: 5 parts of epoxy resin, 4.5 parts of furfuryl alcohol mud, 1 part of unsaturated polyester resin, and 1 part of furfuryl alcohol.

[0022] The preparation method of modified epoxy resin: add 80% of the epoxy resin by weight and the furfuryl alcohol slime and furfuryl alcohol into the reaction kettle, then vacuumize until the vacuum degree is 0 ~ -20KPa, and pass nitrogen gas into the reactor for two Replace the air once, heat up to 98°C after heating and melting, and dehydrate for 80 minutes; after the nitrogen in the reactor is emptied, cool down to 90°C, add the remaining epoxy resin, stir for 35 minutes, and then add solid sodium hydroxide catalyst for 40 minutes After the addition is completed, react for 70 minutes after the addition, then raise the temperature to 140 ° C, and continue the reaction for 110 minutes; finally add polyester and stir for 55 minutes, and neutra...

Embodiment 3

[0024] Modified epoxy resin, the raw materials are composed according to the following parts by weight: 4 parts of epoxy resin, 6 parts of furfuryl alcohol mud, 1.5 parts of unsaturated polyester resin, and 1.2 parts of furfuryl alcohol.

[0025] The preparation method of modified epoxy resin: add 40% of the epoxy resin by weight and the furfuryl alcohol slime and furfuryl alcohol into the reaction kettle, then vacuumize until the vacuum degree is 0 ~ -20KPa, and pass in nitrogen for two Replace the air once, heat up to 120°C after melting, and dehydrate for 35 minutes; after the nitrogen in the reactor is emptied, cool down to 95°C, add the remaining epoxy resin, stir for 20 minutes, and then add solid sodium hydroxide catalyst for 50 minutes After the addition is completed, react for 50 minutes after the addition, then raise the temperature to 125 ° C, and continue the reaction for 125 minutes; finally add polyester and stir for 70 minutes, then neutralize to 6 with sodium hy...

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Abstract

The invention relates to modified epoxy resin and a preparation method thereof, which belong to the technical field of modified epoxy resin and solve the technical problem of utilizing furfuryl alcohol waste efficiently and achieving fine compatibility to bitumen after epoxy resin is modified. The technical scheme includes that the modified epoxy resin comprises the following raw materials: by weight parts, 3-9 parts of epoxy resin, 2-8 parts of furfuryl alcohol mud, 0.5-3 parts of polyester and 0.5-3 parts of furfuryl alcohol. Usage of the epoxy resin is reduced since part of epoxy resin is substituted, and accordingly cost is reduced. The modified epoxy resin has excellent compatibility with the bitumen, can react with the epoxy resin under a certain condition, is simple in preparation process due to the fact that most reaction is completed at the normal temperature. Cost of epoxy bitumen can be reduced and waste is utilized, energy resources are saved for the country, environment pollution is reduced and excellent social benefits are brought.

Description

technical field [0001] The invention relates to a modified epoxy resin and a preparation method thereof, belonging to the technical field of modified epoxy resin. Background technique [0002] Due to the annual waste generated from the production of furfuryl alcohol is 15,000-20,000 tons, the inorganic components of the waste account for 30-40%, mainly copper, chromium salts and some silica and calcium salts, and the organic components account for 60- 70% is furfuryl alcohol, furoic acid, polymers and other by-products. [0003] At present, the production of furfuryl alcohol in the world is mainly in China, because of its serious waste pollution, most foreign countries stop production, and then move their production bases to third world countries. There are two main ways to deal with this waste in my country: one is to burn off the organic part, and the remaining inorganic part is used to extract metal copper and chromium. Or through high-temperature roasting, leaching, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08L67/06C08G59/14C08L95/00
Inventor 吴冬建张立宏申俊敏
Owner 山西永力实业有限公司
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