Epoxy resin formulation, epoxy resin material and preparation method and application thereof

By synergistically toughening components such as alicyclic epoxy resin, core-shell particle modified epoxy resin, polyenol acetal, and oxazolidinone, combined with composite curing agents and accelerators, the contradiction between toughening, heat resistance, and curing speed in epoxy resin systems is resolved, achieving high toughness, high impact resistance, and high thermal stability, thus meeting the application requirements of high-end fields.

CN122302484APending Publication Date: 2026-06-30CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing epoxy resin systems struggle to balance toughness, heat resistance, and curing speed, resulting in poor toughness and processability, which fails to meet the demands of high-end applications.

Method used

The epoxy resin is toughened by synergistic toughening of components such as alicyclic epoxy resin, core-shell particle modified epoxy resin, polyenol acetal and oxazolidinone, combined with composite curing agent and accelerator. By controlling the dosage ratio of each component, the toughness, impact resistance and thermal stability of the epoxy resin are ensured, and the curing speed is improved.

Benefits of technology

It improves the toughness and impact resistance of epoxy resin, enhances thermal stability, ensures the processability of pultrusion molding and the wettability of carbon fibers, and significantly improves the curing speed and reduces the curing temperature.

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Abstract

This invention relates to the field of epoxy resins, and discloses an epoxy resin formulation, epoxy resin material, its preparation method, and its application. The epoxy resin formulation includes formulation A and formulation B. By weight, formulation A comprises: 100 parts alicyclic epoxy resin, 20-40 parts core-shell particle modified epoxy resin, 5-15 parts polyenol acetal, 5-15 parts oxazolidinone, 2-6 parts silane coupling agent, and 1-3 parts release agent; formulation B comprises: 100 parts curing agent, 5-10 parts polyether polyol, and 1-5 parts accelerator. In the non-use state, formulations A and B exist independently. The technical solution provided by this invention can effectively balance the mechanical properties, heat resistance, and curing speed of epoxy resin, ensuring the processability of epoxy resin pultrusion molding and its wettability to carbon fibers.
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