Winding epoxy resin composition, preparation method thereof and use thereof

A technology of epoxy resin and composition, which is applied in the field of epoxy resin composition and its preparation, can solve problems such as poor toughness and high viscosity, achieve the effects of improving processability and flexibility, reducing mechanical properties, and meeting viscosity requirements

Inactive Publication Date: 2011-01-19
BLUESTAR BEIJING CHEM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the epoxy resin currently used in the winding molding process generally has a high viscosity or poor toughness, so the development of an epoxy resin system suitable for the winding molding process has become a research hotspot in recent years

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 28.0g bisphenol A type glycidyl ether epoxy resin E-51 (purchased from Wuxi Resin Factory of Blue Star Chemical New Materials Co., Ltd., epoxy value 0.48-0.54), 12.0g glycidyl ester epoxy resin TDE-85 (purchased from Tianjin Jingdong Chemical Composite Material Co., Ltd., epoxy value 0.88) was mixed, heated to 100°C and stirred until a transparent solution was formed, then cooled to 50°C, and then 16.68g di Ethyltoluenediamine (DETDA) and 0.2g propylene oxide methyl ether are mixed evenly, placed in a vacuum drying oven to remove remaining air bubbles, and then poured and solidified. The curing program is 78°C for 1 hour, 160°C for 2 hours, and 200°C for 2 hours to obtain a cured epoxy matrix resin. Differential scanning calorimetry (DSC method) measures glass transition temperature, temperature rise rate 5 ℃ / min, records the glass transition temperature of epoxy matrix resin to be 164 ℃, adopts NDJ-8S type rotational viscometer to test resin composition viscosity, The...

Embodiment 2

[0021] 12.0g bisphenol A type glycidyl ether epoxy resin E-51 (purchased from Wuxi Resin Factory of Blue Star Chemical New Material Co., Ltd., epoxy value 0.48-0.54), 28.0g glycidyl ester epoxy resin TDE-85 (purchased from Tianjin Jingdong Chemical Composite Material Co., Ltd., epoxy value 0.88) was mixed, heated to 100°C and stirred until a transparent solution was formed, then cooled to 50°C, and then 13.96g di Ethyltoluenediamine (DETDA) and 2.0 g of propylene oxide methyl ether were mixed evenly and placed in a vacuum drying oven to remove remaining air bubbles, and then poured and solidified. The curing program is 85°C for 1 hour, 160°C for 2 hours, and 210°C for 2 hours to obtain a cured epoxy matrix resin. The glass transition temperature was measured by differential scanning calorimetry (DSC method), the heating rate was 5°C / min, and the glass transition temperature of the epoxy matrix resin was measured to be 180°C. The viscosity of the resin composition was tested w...

Embodiment 3

[0023] 12.0g bisphenol A type glycidyl ether epoxy resin E-51 (purchased from Wuxi Resin Factory of Blue Star Chemical New Material Co., Ltd., epoxy value 0.48-0.54), 28.0g glycidyl ester epoxy resin TDE-85 (purchased from Tianjin Jingdong Chemical Composite Material Co., Ltd., epoxy value 0.88) was mixed, heated to 100°C and stirred until a transparent solution was formed, then cooled to 50°C, and then 13.96g di Ethyltoluenediamine (DETDA) and 1.0 g of propylene oxide methyl ether were mixed evenly and then placed in a vacuum drying oven to remove remaining air bubbles, and then poured and solidified. The curing program is 85°C for 1 hour, 160°C for 2 hours, and 210°C for 2 hours to obtain a cured epoxy matrix resin. The glass transition temperature was measured by differential scanning calorimetry (DSC method), the heating rate was 5°C / min, and the glass transition temperature of the epoxy matrix resin was measured to be 178°C. The viscosity of the resin composition was tes...

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Abstract

The invention relates to a winding epoxy resin composition, a preparation method thereof and use thereof, which are used for solving the problems of high viscosity or low toughness and the like of the conventional epoxy resin for use in a winding forming process. The winding epoxy resin composition consists of 100 mass parts of epoxy resin, 30 to 50 mass parts of amine curing agent and 0.5 to 5.0 mass parts of micro molecular compounds having epoxy groups. The wound products have high-strength and high-toughness impact resistance and are improved in manufacturability and flexibility.

Description

technical field [0001] The invention relates to an epoxy resin composition for winding and its preparation method and application, in particular to an epoxy resin composition suitable for winding molding process and its preparation method and application. Background technique [0002] Epoxy resin is a class of important thermosetting resins that includes many types. Because of its good heat resistance, mechanical properties and manufacturability, it has been widely used in many fields. It is currently the most commonly used carbon fiber composite material. One of the base resins. Carbon / epoxy composites have the unique advantages of high specific strength and specific modulus, good designability, good fatigue resistance, good structural dimensional stability, and easy large-area integral molding, and have been widely used in the aerospace field. [0003] However, the epoxy resin has the disadvantage of insufficient toughness after curing, and cannot effectively exert the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08G59/50C08K5/1525B29C53/56
Inventor 杨刚孟秀青张静陈伟明高磊孙晓光
Owner BLUESTAR BEIJING CHEM MACHINERY
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