Preparation method of composite polymeric fiber for high-shading-rate mesh cloth

Abstract

The invention discloses a preparation method of a composite polymeric fiber for high-shading-rate mesh cloth. The method includes: firstly, preparing titanium-zinc composite nano powder from titanium tetrachloride, zinc oxide, ammonium hydroxide and the like; secondly, subjecting to reaction with benzophenone tetracarboxylic acid dianhydride and chitosan derivatives to prepare a nano hydrophilic ultraviolet absorption additive; finally, subjecting to reaction with polyurethane, acrylonitrile and the like to obtain the composite polymeric fiber. In a preparation process, the hydrophilic performance of an ultraviolet absorbent is improved by nano modification, and blending with other raw materials in a subsequent polymeric fiber preparation process can be well realized. The composite polymeric fiber prepared according to the method has the great anti-ultraviolet performance, addition of other small molecular anti-ultraviolet absorbents is avoided when the composite polymeric fiber is used as a main preparation material of the shading mesh cloth, and a finished product is stable in chemical performance, high in shading rate, high in ultraviolet absorption performance and less prone to migration volatilization and has advantages of high tensile strength, aging resistance, corrosion resistance, radiation resistance, light weight and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for preparing composite polymer fibers used for mesh cloth with high shading rate. Background technique [0002] Shade net, also known as shading net, is the latest type of protective covering material for agriculture, fishery, animal husbandry, windproof, and soil cover that has been promoted in the past 10 years. After covering in summer, it plays a role of blocking light, rain, moisturizing and cooling. There is also a certain effect of heat preservation and humidification after covering in winter and spring. It is mainly used for the protective cultivation of vegetables, shiitake mushrooms, flowers, edible fungi, seedlings, medicinal materials, ginseng, ganoderma and other crops and aquatic poultry breeding, etc., and has obvious effects on increasing production. [0003] The traditional sunshade net is made of polyethylene, high-density polyethylene, PE, PB, PVC, ...

AI Technical Summary

Problems solved by technology

In fact, the main material fiber of the traditional sunshade net does not have the ability to resist ultraviolet rays, and the shading effect can only be achieved through the action of ultraviolet absorbers or stabilizers. This method of simply adding ultraviolet absorbers usually has certain disadvantages, such as Some anti-ultraviolet absorbers such as benzophenones are small molecular organic compounds, which are prone to volatilization and migration problems. For example, the synergy between some anti-ultraviolet absorbers and other raw materials is not good, which reduces the quality of the finished product. Other properties, etc.