A porous electrolytic composite membrane for electrochemical energy systems, such as alkaline fuel cells, metal-air batteries and alkaline electrolyzers, comprises a porous polymeric material and nanomaterials. The polymeric material is preferably polybenzimidazole (PBI). The nanomaterials are preferably functionalized or non-functionalized. The nanomaterials are preferably titania nanotubes and/or graphene oxide nanosheets. The membrane further comprises an electrolyte solution, such as KOH. A method of preparing the membrane is also provided.

The present invention relates to a process for preparing a resin composition comprising benzoxazine, a prepreg and a laminate prepared therefrom. Said resin composition comprising benzoxazine is prepared by adding an acidic filler into the resin composition comprising benzoxazine, wherein said resin composition comprising benzoxazine comprises a benzoxazine resin, an epoxy resin A1 having an epoxy equivalent of 150-450, and an epoxy resin A2 having an epoxy equivalent of 451-1000. By adding an acidic filler into the resin composition, the present invention greatly promotes the polymerization of benzoxazine and epoxy resins, and decreases the curing temperature needed for the polymerization of benzoxazine and epoxy resins. The laminates prepared from the resin composition added with an acidic filler have a high anti-stripping stability, a high glass transition temperature, a low water absorption, a high heat resistance, a high bending strength and a better processability, and can achieve a low coefficient of thermal expansion.

The present disclosure provides a carbon fiber dome. The carbon fiber dome includes at least two carbon fiber prepreg layers. The at least two carbon fiber prepreg layers include carbon fiber prepregs made by at least two weaving methods. In addition, the present disclosure provides a method for manufacturing the carbon fiber dome as described above. The method includes the following steps: using prepreg resin to pre-impregnate carbon fiber materials made by at least two weaving methods; and pre-impregnating the carbon fiber materials made by at least two weaving methods for bonding each other.

The present invention relates to composites comprising rigid-rod polymers and graphene nanoparticles, processes for the preparation thereof, nanocomposite films and fibers comprising such composites and articles containing such nanocomposite films and fibers.

Embodiments of the present invention provide for anion exchange membranes and processes for their manufacture. The anion exchange membranes described herein are made the polymerization product of at least one functional monomer comprising a tertiary amine which is reacted with a quaternizing agent in the polymerization process.