Excellent mechanical, thermal, and electrical properties of carbon nanotubes (CNTs) and nanofibers (CNFs) have motivated the development of advanced nanocomposites with outstanding and multifunctional properties. After achieving a considerable success in utilizing these unique materials in various polymeric matrices, recently tremendous interest is also being noticed on developing CNT and CNF reinforced cement-based composites. However, the problems related to nanomaterial dispersion also exist in case of cementitious composites, impairing successful transfer of nanomaterials' properties into the composites. Performance of cementitious composites also depends on their microstructure which is again strongly influenced by the presence of nanomaterials. In this context, the present paper reports a critical review of recent literature on the various strategies for dispersing CNTs and CNFs within cementitious matrices and the microstructure and mechanical properties of resulting nanocomposites.

No abstract

 This research focuses on making double-layer complex wrapped yarn using stainless steel fiber (S), rayon yarn, and PET bamboo charcoal yarn in rotor twister. During the process, the twisting speed of the rotor twister was changed. The functional complex thermal-regulating/wicking conductive wrapped yarn of different twisting speeds (2~6 turns/cm) were fabricated using the Fully Computerized Hosiery Machine. The effects of different twisting speeds on the far-infrared emissivity, air permeability, and water absorption of the functional complex thermal-regulating/wicking conductive wrapped yarn were discussed. In the end, the functional knitted fabrics and hosiery with thermal-regulating/wicking conductive properties were made.

No abstract

No abstract