改性处理对3D打印稻草纤维水泥基复合材料性能的影响OA

To explore the application of plant fibers in 3D printing cement-based materials,this study used rice straw fiber as an additive and investigated the modification effects of boiling treatment and potassium permanganate solution treatment on rice straw fiber,as well as their impact on the performance of 3D printing rice straw fiber cement-based composite.The results show that boiling treatment makes fiber surface clean and rough but increases their water absorption.Potassium permanganate solution treatment reduces water absorption while increasing surface roughness and crystallinity.Both modification methods significantly improve the mechanical properties,the interlayer bonding strength and interstrip bonding strength of 3D printing rice straw fiber cement-based composites,with the potassium permanganate modification superior.This work offers new idea for design and performance optimization of 3D printing rice straw fiber cement-based materials and broadens the application of rice straw fiber in the construction field.