Composites
Sep 19, 2025
The production of composite materials involves key processes such as resin curing, fiber impregnation, and prepreg preparation, where temperature serves as a core parameter determining the chemical reaction rate and material structure.
- Resin Curing: Epoxy resins require cross-linking and molding at a temperature range of 120-180℃. A temperature fluctuation exceeding ±1℃ may lead to internal stress concentration or incomplete curing.
- Prepreg Preparation: Precise temperature control is needed within a wide range of -10℃ to 300℃. For instance, the melting stage requires a temperature of 80℃±0.1℃ to reduce resin viscosity, while the impregnation stage needs a temperature of 120℃±0.1℃ to ensure uniform resin content.
- Autoclave Process: Aerospace components often need to be cured at a high temperature above 200℃ and a pressure of 0.5-1MPa, with the temperature gradient controlled within ±5℃.
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