Affiliation:
1. Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering Xihua University Chengdu China
2. School of Chemical Engineering Changchun University of Technology Changchun China
3. Information Research Center of Xihua University Library Xihua University Chengdu China
4. College of Polymer Science and Engineering Sichuan University Chengdu China
Abstract
AbstractThe composites of polybenzoxazine (PBZ) containing functionalized plasma treatment basalt fibers (fP‐BFs) were fabricated through in‐situ polymerization‐mixing technique. fP‐BFs is an effective reinforcement material that can improve the mechanical, thermal, and interfacial properties of composites. Surface activation of fP‐BFs can be enhanced through plasma modification, which improves the interaction between fP‐BFs and 3‐aminopropyltriethoxysilane. A systematic study on fP‐BFs/PBZ composite showed that a processing power of 300 W, a processing time of 5 min, and a fiber content of 9% can achieve good comprehensive mechanical properties. Thermogravimetric analysis results showed that fP‐BFs‐7/PBZ has the highest thermal stability, and its carbon residue rate, decomposition temperature and thermal decomposition activation energy are 36.80%, 452.2 °C and 133.56 kJ/mol, respectively. The dynamic mechanical analysis experiment showed that the addition of fP‐BFs improved the Tg of the composites. Among them, fP‐BFs‐5/PBZ showed the highest Tg, reaching 233.2 °C.Highlights
Plasma treatment produced multi‐level structure of basalt fibers (fP‐BFs).
Polybenzoxazine (PBZ)/fP‐BFs composites showed excellent performance.
Interfacial bonding mechanism between fP‐BFs and PBZ was elucidated.
Interfacial interactions between BFs and PBZ contributed to property enhancement.
This work provided a green fabrication strategy of PBZ composites.