水合工艺制备钛酸纳米片及其在尼龙6复合材料中的性能OACHSSCD

Titanate nanosheets derived from layered alkali metal titanates exhibit excellent properties in photocatalysis,electrochemistry,and nanocomposites.However,exfoliating alkali metal titanates to produce these nanosheets usually requires toxic organic amines,which limits their large-scale production and application.In this study,layered potassium dititanate was used as a precursor to synthesize titanate nanosheets with high surface area via a steam hydration,which eliminates the need for organic amines.The resulting hydrated nanosheets were compared with intercalated titanate nanosheets prepared using organic amines,and their differences in X-ray diffraction(XRD)patterns,specific surface area,mechanical properties,and tribological performance in Nylon 6 composites were analyzed.The hydrated nanosheets reached a specific surface area of 165.9 m2/g,and their XRD structure was essentially identical to that of intercalated titanate nanosheets.When the addition amount of hydrated titanate nanosheets was 1％(mass ratio)the tensile and flexural properties of hydrated nanosheet/nylon composites were comparable to those of intercalated nanosheet/Nylon 6 composites,though the impact strength was slightly lower.Under different loads and friction rate,1％mass ratio addition of hydrated nanosheets effectively improved the friction and wear properties of Nylon 6,exhibiting similar effectiveness to intercalated nanosheets.These results demonstrate that titanate nanosheets prepared via steam hydration can be effectively applied to enhance the tribological properties of nylon 6 composites.