The main raw material of needle punched filament geotextile is polyester chips, which are crude oil extracts, and its products and raw materials are polymer materials. Its advantages are good durability and environmental resistance in the absence of light, suitable for use in environments without degradation. But they are afraid of light and have poor ability to absorb ultraviolet rays. They decompose in 2-3 years under direct sunlight. Needled filament geotextile has high strength and can be used to avoid the impact of irregular stones on the surface of the fabric in stone slope protection.
Needle punched long silk geotextile is mainly used for improving soft soil road sections, slope protection, and other artificial island construction. Needled filament geotextile is first made from a layer of plastic film to create a layer of geotextile. The geotextile is mainly used for repairing the damaged geotextile, and its anti-seepage effect is usually used for the anti-seepage of artificial lakes and Jingxiang lakes.
The original material of geotextile is polymer geotextile, which has a chain layout and is very sensitive to oxidation, easy to degrade, react, and reverberate, resulting in data damage. Therefore, the service life of geotextiles naturally attracts high attention from engineers. Oxidation involves thermal oxidation caused by heat and temperature, as well as photooxidation by ultraviolet radiation in sunlight. The effect of photooxidation damage is very strong. Due to the high energy of ultraviolet light, it can cut off the molecular chains of polymers or cause photooxidation reactions. In addition, chemical and biological corrosion, freeze-thaw changes, and mechanical wear are also affected by data durability, and the impact of solar ultraviolet radiation is important.
Needle punched long silk geotextile is a new type of construction material specified for civil engineering. It is composed of long silk fibers laid into a network through different equipment and processes, and then interwoven with different fibers through needle punching and other processes, intertwining and fixing each other to standardize the fabric, making it soft, full, solid, and stiff, in order to meet the application requirements of different thicknesses. Long silk geotextile has good mechanical properties and good water permeability, It can also resist corrosion and aging, and has the functions of blocking, filtering, drainage, protection, stabilization, reinforcement, etc. It can adapt to uneven base course, resist external force damage during construction, creep is small, and can still adhere to the original function under long-term load.