The bonding state between the carbon fiber and the polymer directly affects the properties of carbon fiber reinforced polymer composites (CFRP), which is influenced by the surface structural characteristics of carbon fiber (CF). The surface of CF is composed of tightly packed graphite crystallites lacking active carbon atoms, which results in low surface energy of CF and weak interfacial performance of CFRP. The interfacial properties can be evaluated indirectly through macro-mechanical properties, and can also be characterized by micromechanical testing methods. In order to improve the interfacial combination between the carbon fiber and the polymer, it is usually to modify the interface of CFRP, which mainly includes carbon fiber surface functionalization, carbon fiber surface coating and introduction of micro-nano enhancement phase. In this paper, researches on the interfacial properties of CFRP were reviewed, and the existing problems and the future research focus were also discussed.

Atomic or molecular simulation technology is gradually used in the performance simulation of organic ballistic fibers and their composites, to reveal their various performance mechanisms and evolutionary mechanisms from the molecular point of view. Atomic or molecular simulation technology in the mechanical properties, thermal properties, aging properties, properties of aramid fiber composite fibers, and interface properties of aramid fiber-reinforced composites are summarized in this paper.

Carbon fiber reinforced epoxy composites is playing a role in reducing structural weight and costs, saving resources and optimizing processes. However, the low properties of epoxy matrix and the weak interfacial bonding between carbon fiber and epoxy lead to the poor interlaminar performancec for carbon fiber or fabric reinforced epoxy composites. The application of nanomaterials is an effective way to improve or enhance the interlaminar properties of composite materials. Therefore, this paper summarized the research on the methods of nanomaterialsto reinforce resin matrix, and nanomaterials-carbon fibers multi-scale reinforcement to enhance the interlaminar performace, and nanomaterials to distribute the surface of prepreg uniformly, and nanomaterials to promote interfacial binding energy between carbon fiber and epoxy and nanomaterials macrostructure to improve the interlaminar properties of composites.

No abstract

Abstract-Compatibility between POSS and polymer was the key element of effecting whether POSS as nanofillers could improve mechanical properties of polymer. Based on really materials and applied manufacturing process, a new kind of an effective modulus predictive method for POSS reinforced resin matrix composites which could compute and analyze modulus of any content ratio of POSS in composites with only one content ratio was built in order to provide theoretical foundations for design and property of POSS/resin composites. According to practically different materials system and corresponding manufacturing processes, few experiments which only needed elastic modulus of one random content-ratio POSS/resin composites were made to predict effective elastic modulus of any other content ratio of POSS/resin composites under the same manufacturing processes by obtaining experimental constants based on numerical progressive iterative approximation method and compute the above experimental constants as basic materials parameters so as to build the whole analysis model in the next step. An excellent agreement was found between data obtained from this study and the experiment.