Research On Self-cleaning Fabrics And Durable Water&Oil Repellent Performance

In this paper,the lotus leaf-like fabric with super water and oil repellent had been to research,design based on lotus leaf surface character and combined with "the lotus effect" Lotus leaf is double microstructure,and it includes the micron-structure and the nano-sructure. In order to obtain the fabric of having super hydrophobic surface, the method is used that the superficial structure of lotus leaf is imitated,first is to imitate the tower of micron structure of lotus leaf,and second is imitate the nanometer structure of lotus leaf.This Paper mainly in three areas to improve super water and oil repellent properties of the fabric. First,we choice wool-polyester yarn as the raw material, neutral protease was used on the yarn surface to make stripping treatment before weaving,so as to form a rough surface.Through the choice of two different tissue on the fabric woven, crepe weave and the weft yarn with high shrinkage polyester filament method were used to require base cloth weaving after the test comparison.Then, using single and compound crosslinking agent in combination with water and oil repellent finishing agent for fabric processing, Through the test on water-repellent contact Angle and on the level of oil-repellent of the dry cleaning and friction fabric, we chose the durability good50%washing strengthening agent+50%CLX of the complex match crosslinking agent. Take water-and-oil repellent level as evaluation indexes, curing time and temperature of finishing agent and its matching cross-linking agent on the finishing result is investigated with optimized parameters to obtain the optimal water-and-oil repellent finishing technologies. At last, the result of water-and-oil repellent and durability of the finishing fabric are also texted.In this article, I choice nanometer zinc oxied (ZnO) as my experiment material,for the sake of use the nano-particle and its self cleaning finishing together. Take water-and-oil repellent level as evaluation indexes, curing time and temperature of finishing agent and its matching cross-linking agent on the finishing result is investigated with optimized parameters to obtain the optimal water and oil repellent finishing technologies. two different crosslinking agent is chosen when fabric self-cleaning finishing, then test self cleaning effect to verify the nanoparticles and surface adhesion fastness, and choose the bonding fastness as the crosslinking agents when doing nanometer after processing.According to the optimum process after finishing fabric, to test water-repellent contact Angle and the level of oil-repellent of the fabric which before arrangement and after dry cleaning and friction, we found water-repellent contact Angle of the original fabric increased from76°to150°, oil-repellent level from1to7; After10times dry cleaning, water-repellent contact Angle is134°, oil-repellent level is6magnitude; after1000times friction water-repellent contact Angle is123°, oil-repellent level is5.5magnitude. In order to qualitatively characterize the antifouling performance of the fabric, the paper also made a set of gray experimental test, the test results show that the sort of fabric has good antifouling performance.In the end, after finished by nano water-repellent and oil-repellent process, including thickness, drapability, air permeability are tested. Testing results indicate that there are no obvious differences between original fabrics and finished fabrics. Drapability and air permeability of finished fabric are less weakened. In a word, the style and other characteristics of self-cleaning garment are still remained,they can still meet the fabric durable requirements of water and oil repellent functional.