Desizing Of Polyester Fabric And Water Proofing/Oil Repellent/Antifouling Finish

The purpose for this thesis is to further optimize the desizing process for polyester (PET) fabric, and select suitable desizing agents for this process. Furthermore, solid desizing agent LLC was made in the lab and tested in the experiments showing good performance for the desizing process. Simultaneously, in order to improve the water proofing, oil repellent and antifouling property of PET fabric, the organic fluorine resin TC-410H, produced by Dakin Co. Limited Japan, were used and tested for optimizing the process conditions. In the basis of orthogonal tests of desizing process for PET fabric, this thesis discussed the influencing factors for the process and the system was optimized. By the calculations of DPS software, the main factor and optimal process conditions for the desizing process were fixed and the performances with desizing agents bought from the market(liquid desizing agent 816 and CDA, solid desizing agent DS) and solid desizing regent LLC made in the lab were compared. Finally, the performance of resin TC-410H and the changes of K/S value for the tinct PET fiber after finishing were discussed.From the results of the experiments, it is shown that the performances of solid desizing agents are better than liquid ones. By using of solid desizing agent LLC, nearly all of the size in the PET fiber can be removed. Also, after the treatment with the TC-410H resin, the PET fabric has good property of water proofing, oil repellent and antifouling. Furthermore, the change of K/S value is limited.