Epoxy resin system, preparation method thereof and prepreg
An epoxy resin system and epoxy resin technology, applied in the field of composite materials, can solve the problems of unfavorable storage, transportation and use of prepregs, inability to store for a long time, low apparent activation energy, etc., and achieve stable, reliable and excellent performance. The effect of performance, simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0076] Example 1
[0077] (1) Epoxy resin preparation
[0078] Preparation of component A: Take 10kg of solid epoxy resin E-20 and 4kg of liquid epoxy resin E-51 in the reaction kettle and heat to 100°C and stir for 60 minutes. The solid epoxy resin is completely melted and mixed with the liquid epoxy resin. Then the reactor was cooled to 55°C and kept warm.
[0079] Preparation of component B: Take 6kg of liquid epoxy resin E-51 into the mixer, add 3.6kg of Thinkhard 608K and 1kg of PN-23J, stir for 40min, and then grind twice with a three-roll mill to obtain a uniform mixture.
[0080] Epoxy resin system preparation: add B component into A component reactor and stir at 55°C for 60 min to obtain epoxy resin system.
[0081] (2) Activation energy of resin system curing reaction
[0082] Using Mettler-Toledo DSC1 to study the curing reaction of the resin system, the temperature range is 25~260℃, the heating rate is 5, 10, 15 and 20℃ / min, the protection system is high-purity nitrogen, and...
Example Embodiment
[0091] Example 2
[0092] (1) Epoxy resin preparation
[0093] Preparation of component A: Take 4kg of solid epoxy resin E-20, 9kg of semi-solid phenolic epoxy resin F-46 and 2kg of liquid epoxy resin E-51 in the reaction kettle and heat to 130°C and stir for 45 minutes. The solid epoxy resin is completely melted and fully mixed with the liquid epoxy resin, and then the temperature of the reactor is lowered to 50°C for heat preservation.
[0094] Preparation of component B: Take 5kg of liquid epoxy resin E-51 into the mixer, add 3.6kg of Thinkhard 608K and 1.2kg of PN-23J, stir for 50min, and then grind twice with a three-roll mill to obtain a uniform mixture.
[0095] Epoxy resin system preparation: add B component into A component reactor and stir at 50℃ for 60 min to obtain epoxy resin system.
[0096] (2) Activation energy of resin system curing reaction
[0097] Using the same method as in Example 1, the relationship between activation energy and conversion rate was obtained, such ...
Example Embodiment
[0104] Example 3
[0105] (1) Epoxy resin preparation
[0106] Preparation of component A: Take 5kg of tetrafunctional liquid epoxy resin S720 and 1.2kg of phenoxy resin JER4250 in the reaction kettle and heat to 130℃ and stir for 90min. When the phenoxy resin is completely dissolved in the epoxy resin, add 6kg of solid Epoxy resin and continue to stir for 60 minutes, after the solid epoxy resin is completely melted and fully mixed, the reactor is cooled to 60°C and kept warm.
[0107] Preparation of component B: Take 2kg of liquid epoxy resin E-51 and 5kg of liquid epoxy resin S720 into the blender, add 5kg of Thinkhard 608K and 1.2kg of PN-23J, stir for 50min, and then grind once with a three-roll mill A homogeneous mixture is obtained.
[0108] Epoxy resin system preparation: add B component into A component reactor and stir at 60°C for 25 min to obtain epoxy resin system.
[0109] (2) Activation energy of resin system curing reaction
[0110] Using the same method as in Example 1, ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap