▎ 摘　　要

NOVELTY - Preparation of UV-resistant cashmere composite fabric involves (S1) adding sodium periodate into a solution obtained by dissolving chitosan in acetic acid, terminating with dehydrated ethanol, and dialyzing to obtain dialdehyde chitosan (D-CS) solution, (S2) drying the D-CS solution, mixing with acetic acid solution, adding hydrogen peroxide, stirring, adding Span 80(RTM: sorbitan monooleate) and sodium tripolyphosphate (TPP) to obtain nano-chitosan (nano-CS) solution, (S3) soaking the cleaned pure cashmere fabric into the nano-chitosan solution, washing, and drying to obtain cashmere fabric modified by nano-chitosan, and (S4) adding graphene oxide (GO) powder into deionized water, stirring uniformly to obtain GO solution, soaking the cashmere fabric modified by nano-chitosan into the GO solution, using the principle of layer-by-layer electrostatic self-assembly technology of nano-chitosan and GO to load the GO onto the surface of the cashmere fabric, washing, and drying. USE - Preparation of UV-resistant cashmere composite fabric for UV-resistant fabrics, smart wear and antibacterial clothing. ADVANTAGE - The method is simple and efficient, and provides cashmere composite fabric having excellent washing durability and UV resistance with UV protection factor (UPF) of 500+ and UVA of less than 5% using GO as UV-resistant finishing agent, which has excellent antibacterial, antistatic and UV-resistant properties. DETAILED DESCRIPTION - Preparation of UV-resistant cashmere composite fabric involves (S1) adding sodium periodate into a solution obtained by dissolving chitosan in acetic acid under light shielding condition, terminating with dehydrated ethanol, and dialyzing to obtain dialdehyde chitosan (D-CS) solution, (S2) drying the D-CS solution, mixing with acetic acid solution, adding hydrogen peroxide, stirring, adding Span 80(RTM: sorbitan monooleate) and sodium tripolyphosphate (TPP), and reacting to obtain nano-chitosan (nano-CS) solution, (S3) weighing the nano-chitosan solution, soaking the cleaned pure cashmere fabric into the nano-chitosan solution, washing, and drying to obtain cashmere fabric modified by nano-chitosan, and (S4) preparing nano-chitosan modified cashmere-loaded graphene fabric by adding graphene oxide (GO) powder into deionized water, stirring uniformly, obtaining the GO solution after ultrasonication, soaking the cashmere fabric modified by nano-chitosan into the GO solution, using the principle of layer-by-layer electrostatic self-assembly technology of nano-chitosan and GO to load the GO onto the surface of the cashmere fabric modified by nano-chitosan, washing, and drying.