Epoxy powder coating and preparation method thereof
Through the combination of modified phenolic resin, terminal carboxyl polyester resin and nano-cerium oxide coated mica, the problems of slow curing speed and poor leveling of epoxy powder coatings at low temperatures are solved, and high-performance salt spray and damp heat resistance are achieved, making it suitable for coating facilities in extreme environments.
Patent Information
- Application Number
- CN202510928994.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing epoxy powder coatings have slow curing speed, poor leveling properties and insufficient salt spray resistance in low-temperature environments of -5°C to 10°C, making it difficult to meet the construction and anti-corrosion requirements of facilities in extreme environments.
An epoxy powder coating is prepared using a combination of modified phenolic resin, carboxyl-terminated polyester resin and nano-cerium oxide-coated mica through a specific process to improve low-temperature curing performance and leveling properties, as well as enhance salt spray resistance.
The gel time is significantly shortened to 16.2-18.5 minutes, the glossiness is improved to ≥92GU, the salt spray resistance life reaches 1080-1150 hours, and the moisture and heat resistance is improved to 360-380 hours, meeting the construction and anti-corrosion requirements of facilities in extreme environments.