Antistatic spandex fiber and production method thereof

Abstract

The invention discloses an antistatic spandex fiber. The antistatic spandex fiber comprises a modified titanium dioxide antistatic agent, wherein the modified titanium dioxide antistatic agent is especially structurally characterized in that the surfaces of titanium dioxide particles are coated with antimony-doped stannic oxide layers. A production method of the antistatic spandex fiber comprises the following steps: reacting polyether glycol and diisocyanate in a DMAC solution according to a mole ratio of 1 to (1.55-2.15) to obtain a pre-polymer; carrying out chain-extension reaction by the pre-polymer and a mixed amine chain extender to prepare a polyurethane polymer solution with the required viscosity; and adding the modified titanium dioxide antistatic agent, an antioxidant, a dyeing assistant and other additives into the polyurethane polymer solution, uniformly mixing, curing and spinning. Compared with the prior art, the antistatic spandex fiber is free of other antistatic agents; the antistatic performance of the antistatic spandex fiber is obviously superior to that of the conventional spandex filament; the modified titanium dioxide antistatic agent is highly compatible with DMAC and the polyurethane polymer, is high in thermal stability and can be widely applied to production of the antistatic spandex fiber.

Description

technical field [0001] The invention relates to an antistatic spandex and a production method thereof, and belongs to the technical field of polymer textile materials and their preparation. technical background [0002] Spandex tends to generate static electricity due to friction and induction during production, processing and use, and because spandex fiber itself has low hygroscopicity, high friction coefficient, and high resistivity, the generated charges are easy to accumulate and not easy to escape. Static electricity generated during use will cause problems such as broken threads and uneven tension, which will affect production efficiency and product quality, and fibers with static electricity will also cause discomfort in clothing after they are made into clothing. In some special occasions, it may even cause danger. . [0003] In order to improve the antistatic properties of spandex and eliminate the adverse effects caused by static electricity, it can be improved fr...

AI Technical Summary

Problems solved by technology

However, the solubility of ionic antistatic agents is limited, and contains a large amount of metal salts, which increases the difficulty of washing and dyeing wastewater treatment in the later stage, and has environmental protection problems; non-ionic antistatic agents are generally alcohols, amines, amides or fatty acids. The adduct of oxyethane has poor effect on improving the antistatic property of spandex fiber and has low toxicity