Composite polyester staple fiber geotextile and preparation method

Abstract

The invention discloses a composite polyester staple fiber geotextile and a preparation method. The composite polyester staple fiber geotextile is prepared from, in weight percent, 80-90% of polyesterstaple fibers, 5-15% of polypropylene staple fibers and 1-5% of polypropylene composite particles. According to the composite polyester staple fiber geotextile and a technology, the mechanical strength, the bursting strength, the aging resistance and the flame resistance of a polyester geotextile can be improved, product thicknesses can be reduced under the condition of equal surface density, andthe geotextile cannot be easily torn in a right-angle direction.

Description

technical field [0001] The invention belongs to the technical field of non-woven fabrics, and in particular relates to a composite polyester staple fiber geotextile and a preparation method thereof. Background technique [0002] Polyester staple fiber geotextile has the functions of isolation, filtration, drainage, reinforcement, protection and maintenance. It is characterized by good flexibility, corrosion resistance, acid and alkali resistance; and has good water permeability, filtration and isolation performance, and convenient construction. It is mainly used in engineering fields such as water conservancy, hydropower, highways, railways, ports, airports, sports venues, tunnels, coastal tidal flats, reclamation, and environmental protection. Polyester staple fiber geotextiles are non-woven fabrics, which do not require weaving and are less stable than woven fabrics. [0003] At present, the commonly used polyester staple fiber geotextiles are mainly manufactured through...

AI Technical Summary

Problems solved by technology

The polyester staple fiber geotextile manufactured by this process is easy to tear from the right angle direction, and the bursting force is relatively poor. The thickness of the geotextile with the same surface density is much thicker; the method of hot pressing can reduce the thickness of the geotextile. Thickness, but the melting point of polyester is relatively high. At present, 4080 fiber (low-melt cotton) is added as a binder, so that it can be hot-pressed and shaped at a relatively low temperature, but the cost of 4080 fiber is relatively high.

[0004] In addition, both polyester staple fiber geotextiles and polypropylene staple fiber geotextiles require aging resistance. Although the aging resistance of polyester staple fiber geotextiles is stronger than that of polypropylene staple fiber geotextiles, the main use of polyester staple fiber geotextiles is It is a slope protection, and the applicable occasions are mostly outdoors. The surface of the geotextile is less covered, and it is exposed to the wind and sun every day, and the anti-aging performance will be poor.

In addition, polyester staple fiber geotextiles are easy to burn when exposed to open flames, and their flame retardancy is poor.

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