A kind of electrostatic cotton material and its preparation method and application

Abstract

An electrostatic cotton material and its preparation method and application. The electrostatic cotton material is composed of two-component composite filaments, and the two components are in a parallel structure in the composite filaments. Wherein, the melt index of the A component material is 34g / 10min~42g / 10min; the intrinsic viscosity of component B material is 0.60dl / g~0.69dl / g, and the oxygen index exceeds 28.0%. Its production process is completely environmentally friendly, with little attenuation of filtration efficiency in high-temperature environments during use, and has a bright filament aesthetic fabric style, low odor and flame-retardant effect. It is used as a high-dust-holding material for building fresh air systems or automotive air filtration applications.

Description

A kind of electrostatic cotton material and its preparation method and use technical field [0001] The present invention relates to a non-woven material, in particular to a static cotton material. Background technique [0002] With the country's in-depth promotion of air pollution control and residents' longing for a higher quality of life, home and End-use fields such as passenger cars are paying more and more attention to air quality maintenance. Building fresh air system is an inevitable choice for the development of building technology Building energy saving is inseparable from the fresh air system, residents’ health cannot be separated from the fresh air system, and the uneven fresh air market is in deep reshuffle It will usher in greater development in the future. The market ownership of passenger cars is increasing year by year. Driven by its consumption, the market of automotive air-conditioning filters Field demand is always high. The strong demand for fresh...

AI Technical Summary

Problems solved by technology

[0005] 1. The staple fiber electrostatic cotton is mostly made of polyester staple fiber and electrostatic functional staple fiber blended and then needled and reinforced. The needle marks and holes on the cloth surface are obvious, which reduces the filtration efficiency of the electrostatic cotton;

[0006] 2. The electrostatic properties of short-fiber electrostatic cotton mainly come from electrostatic functional short fibers. The manufacturing process is lengthy and the electrostatic attenuation is obvious in high-temperature environments, which cannot adapt to the high-temperature processing conditions of subsequent filter material compounding and filter material pleating processes;

[0007] 3. The arrangement and orientation of the short-fiber electrostatic cotton fibers are messy, and the appearance color is dark after forming, and the needle-punched consolidation is prone to unstable appearance such as fluffing, and the fabric style is poor in aesthetics;

[0008] If the short-fiber electrostatic cotton meets the flame-retardant requirements of passenger car interior materials, it must be coated or impregnated with a strong-smelling flame-retardant functional additive, and then dried in a tenter. The process is difficult and easy to change color and durability The more critical is that the production process has a strong odor during processing and needs to be matched with a special exhaust gas recovery treatment system. After the product is manufactured, it cannot meet the expected value within level 3 in the odor test VDA270 standard for automotive interior materials.

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