Polyester fiber modified by hydrolysis-resisting agent and producing method thereof

Abstract

The invention discloses polyester fiber which is modified by anti-hydrolytic reagent, which comprises anti-hydrolytic reagent carbodiimide 0.1-1% and polyester fiber 99-99.9%. The modified polyester fiber is prepared through adding anti-hydrolytic reagent carbodiimide in spinning screw bolt and mixing with high viscosity polyester welding flux to do composite spinning. The physical-mechanical properties of polyester fiber which is modified by anti-hydrolytic reagent of the invention completely achieves processing behavior of polyester fiber in common industry, ageing resistance under the environment of acid or high moisture high temperature is greatly improved, and the application field of the invention can be extended to various field of marine fishing net, tire cord yarn and the like. Difficulty of process technology of modified fiber is not complex, the line for manufacturing technique of the traditional chemical fiber need not to change, the invention is applied to commercial manufacture, cost of modified polyester fiber compared with other fiber (such as nylon) which is used at present is greatly reduced, and economic benefit is distinctive.

Description

Technical field [0001] The invention relates to a polyester fiber and a production method thereof, in particular to a polyester fiber modified with an anti-hydrolysis agent and a production method thereof. Background technique [0002] Due to its superior physical and chemical properties and lower cost, polyester fiber has become more and more widely used. However, because polyester contains ester bonds, and ester bonds are very sensitive to hydrolysis in the presence of water at higher temperatures, the hydrolysis reaction will cause the molecular chain to break at the ester bond, which will seriously affect the subsequent processing performance and limit its use. . Therefore, the research on the modification of polyester has attracted the attention of scientific and technical personnel from all over the world, and the modification of resistance to hydrolysis has become a hot spot. At present, there are many studies on the modification of polyester resins with anti-hydrolysis ag...

AI Technical Summary

Problems solved by technology

At present, there are many studies on the modification of polyester resin by using anti-hydrolysis agents, and it has been popularized and applied in industries such as engineering plastics (films) and industrialized production has been formed. However, in terms of polyester fibers, due to its high cost The cost and the special requirements of high-speed spinning of industrial silk have not made any fundamental breakthroughs.