The Synthesis Of Polyailine And Development Of Antistatic Fabric

With the improvement of living standard and development of science and technology, the textiles with special function finish have got more and more attention, the exploitation and research of antistatic wool fabric has been one of the important areas of it. In recent years, with the discovery of some conductive new polymer materials, it has provides a new technical support for the antistatic functional finishing of fabrics, it shows an excellent antistatic effect and wide application prospect. This research project mainly use wool fabric as substrate material, synthesis polyailine in fabric surface with in-situ polymerization and get the antistatic wool fabric with surface resistivity of 1.5 KΩ.First of all, the synthesis and preparation of polyaniline is researched. In acid circumstance, mix aniline with mixed acid, use ammonium persulfate as oxidant, then the polymer polyaniline was prepared. The influence of polyaniline conductivity and productivity are discussed and analyzed, the optimum preparation technology: under the condition of 0℃ ice water,the molar ratio of ammonium persulfate and aniline is 1:1,adopt the mixture of hydrochloric acid and 5-sulfosalicylic acid as doping acid, react for 6 h. The dissolving properties、micro-structure、thermal stability of the product are tested and the structure and capacity of polymer with different doping acid are studied.Secondly, plasma pretreatment to wool fabric should be made for increasing the contact area of substrate material. The best pretreatment technology is: the treating power is 25 W, the processing time is 3min, and deal with the pressure is 150 Pa. By scanning electron microscopy(SEM) images realize that plasma processing trigger surface etching phenomenon, at the same time, the wool fabric surface resistivity reduced accordingly. Plasma pretreatment lays the foundation for the development of antistatic wool fabric.Thirdly, wool fabrics is in-situ polymerization finished with the optimal process of polyaniline synthesis, the optimal process is got: aniline concentration is 1mol/L, the molar ratio of 5-sulfosalicylic acid and hydrochloric is 2:10, after two doping, the reaction bath ratio is 1:8. Find that the surface resistivity of finished wool fabric is lower than 1.5KΩ, surface resistivity is 25KΩ after 15 days, after washed for 20 times surface resistivity is 22KΩ, surface resistivity is 13KΩ in 120℃ condition for 50 min,the surface resistivity is 22.1KΩ after rubbed for 40 min. It indicates that the fabric has good antistatic persistence, good antistatic water resistance、thermal stability and abrasion resistance.At last, the wearability of antistatic wool fabric is tested and analyzed, the fabric weight, moisture regain, thickness, contact angle, air permeability, drapability, wrinkleresistance and tensile properties of original and finished fabric are compared. Breaking strength, moisture absorption performance and the dye absorption rate of finished fabric are improved.At the same time, scanning electric static, TG thermogravimetric and the change of apparent color K/S value are tested,find that finished polyaniline the fabric not only meets the antistatic wool fabric standard, but also satisfies the performance requirements for other work suits. It can be used in the development and production of professional clothing of some industries, such as gas stations, textile mill, electric depot, precision electronic instrument laboratory and other special sites.