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As a high‐performance thermoplastic polymer, poly(ether‐ether‐ketone) (PEEK) has excellent thermal stability and mechanical properties; it is widely used in the aerospace field. However, PEEK has high viscosity, high processing temperature and poor fluidity in the molten state. In preparing carbon fibre (CF)/PEEK composites, poor impregnation performance will occur, resulting in high porosity and poor mechanical properties of the CF/PEEK composites. This mini‐review focuses on improving the interface of the CF/PEEK composite by coating the CF surface and introduces the preparation of CF/PEEK composites by coating CF with a resin‐based sizing agent, a mixed sizing agent and nanoparticles. Meanwhile, the properties of CF/PEEK composites prepared by different coating methods are compared. © 2022 Society of Industrial Chemistry. [ABSTRACT FROM AUTHOR]

To further improve the anti‐ablation property of boron phenolic resin (BPR), high‐temperature resistant reactive trisilanolheptaphenyl POSS (3OH‐POSS) was synthesized to modify BPR. The thermal stability of BPR was significantly improved. The initial decomposition temperature of the prepared 3OH‐POSS modified BPR (POSSBPR) was increased from 226.0 to 390.2°C and the chars at 800 and 1000°C was increased from 71.1 and 66.7% to 75.1 and 73.7%, respectively with 20% 3OH‐POSS addition. The prepared POSSBPR castings obtained linear ablation rate (LAR) and mass ablation rate (MAR) were as low as −0.122 mm/s and 0.0465 g/s. And the LAR and MAR of high silica fiber reinforced composites (HSC/POSSBPR) were 0.123 mm/s and 0.0602 g/s, respectively. Moreover, the mechanism of high‐temperature carbon microcrystalline and ceramic structure transformation, and ablation performance enhancement of POSSBPR were determined by X‐ray diffraction, X‐ray photoelectron spectroscopy, and Raman spectroscopy. Results indicated that the introduction of 3OH‐POSS promotes the formation of ordered graphite structure of BPR and forms high‐temperature species, such as SiC ceramic, on the ablated surface, which subsequently improves the ablation resistance of the material. [ABSTRACT FROM AUTHOR]

A novel B–Si–Zr hybridized ceramicizable resin(BSZ-PR) was fabricated by chemical reaction of boric acid, zirconium hydroxyl-containing polyhedral oligomeric silsesquioxane(Zr-POSS) and phenolic. The incorporation of boric acid and Zr-POSS improved the thermal stability of the resin effectively, and the residual carbon rate increased to 72.63% at 800 °C under nitrogen atmosphere. The flexural strength of carbon fiber/BSZ-PR and high silica fiber/BSZ-PR composites were increased by 25.7% and 175.5%, and linear ablation rates were reduced by 37% and 44.75%, respectively. It was discovered that the ceramic structures such as SiO 2 , ZrO 2 and SiC can be formed at high temperatures as well as under extreme ablative conditions from both BSZ-PR and its fiber-reinforced composites, which may be the key to the improved thermal, ablative properties. [ABSTRACT FROM AUTHOR]