A method for preparing high-viscosity, medium-temperature curing epoxy resin castings
CN117774364BActive Publication Date: 2026-05-26AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AVIC BEIJING AERONAUTICAL MFG TECH RES INST
- Filing Date
- 2023-12-28
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Existing methods for preparing high-viscosity, medium-temperature curing epoxy resin castings suffer from problems such as bubble defects, high costs, significant variations in curing processes, and numerous safety hazards.
Method used
An epoxy resin casting is prepared by using a press pre-compression molding and autoclave curing method. The process involves weighing, pre-compression molding, encapsulation, and autoclave curing. The resin thickness and vacuum pressure are controlled to reduce bubble formation and improve process consistency and safety.
Benefits of technology
It effectively reduces bubble defects, improves the mechanical properties and batch stability of the casting, reduces equipment costs, and enhances the safety and applicability of the preparation method.
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Figure CN117774364B_ABST
Abstract
This invention relates to the field of composite material preparation technology, and in particular to a method for preparing high-viscosity, medium-temperature curing epoxy resin castings. Using high-viscosity, medium-temperature curing epoxy resin as raw material, this invention employs a press pre-compression molding-autoclave curing process to prepare epoxy resin castings with excellent mechanical properties and density. Furthermore, this preparation method is simple, highly operable, safe, and widely applicable, effectively improving the internal quality and stability of high-viscosity epoxy resin castings, and is of great significance for promoting the overall performance improvement of epoxy-based composite materials.
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