The recent advance of research in the interphase of thermalpalstics/carbon composites was reviewed in this paper.As matrix of composites

thermalplastics were hardly to disperse homogeneously in the reinforeed fiber to achieve eximious soakage for the reason of high melting viscosity

the coalescent of interphase was not satisfying.Thus there should be a new cognition to the optimization of interphase.The interphases would show bad combination neither for the lack of chemical bonds

nor for the connection with short chemical bonds.Hence an interphase with not only strong combination but also excellent relaxation ability should be optimized

meanwhile

the good miscibility with matrix should also be achieved.As the concept from Pluddemann "coupling agent should be parts of matrix" was concerned. We think that the best one was polymer itself which acted as matrix in the composites.Namely

it not only bonded with fiber but also be miscible with matrix.Therefore

this would be a new method for the optimization of interphase in composites.