Retention of compressive strength of thermoplastically cured epoxy compounds under hot and wet conditions
Patent Information
- Application Number
- DE602018086893
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-02-23
- Filing Date
- 2018-02-01
- Publication Date
- 2025-11-05
- Estimated Expiration
- 2038-02-01
AI Technical Summary
Existing prepregs struggle to maintain high compressive strength under both room temperature/dry and hot/wet conditions while also ensuring high damage tolerance and interlaminar fracture toughness.
A pre-impregnated composite material using a resin matrix comprising a mixture of non-crosslinked polyamide 11 particles and crosslinked polyamide 12 particles, combined with polyether sulfone as a thermoplastic toughening agent and epoxy resins, to form composite parts with high compressive strength and interlaminar fracture toughness, which retains strength under hot and wet conditions.
The composite parts exhibit compressive strength retention of at least 75% under hot and wet conditions, maintaining high damage tolerance and interlaminar fracture toughness.