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In recent years, the country has increased the development of polypropylene spun clay. Domestic enterprises have developed a new high-strength polypropylene spun impunker nonwoven geotextile (HPP geotextile). Compared to ordinary PP geotextiles, HPP geotextiles have high strength and high filterivity. Deng Zongtai, Beijing University of Technology, Trial research on HPP geotechnicization and corrosion resistance, and further provide reference for its promotion applications. The results show that HPP geotextiles have better heat oxygen agentia, as well as better acid, alkali and water soaking properties.

The main method of improving the performance of geotextiles also includes adding additives, chemical modification, and composite. Using additives to make up for the performance defects of geotextiles are a common method, but a large number of additives are also contaminated to a certain extent. Modified research on geotextiles, such as further improving the strength of geotextiles and anti-degradation, and is an important means of expanding the application of geotextiles and improving the added value of geotextiles. The results show that the chitosan or cysteine is covalently grafted into the acrylic modified PP geotextile, which can make the geotextile to capture heavy metals when draining or filtered.

In addition, accompanying the rise of crude oil prices and the promulgation of environmental protection related laws, choosing biological degradable thermoplastic polymers is also an important research direction, including polylactic acid (PLA), thermoplastic starch (TPS), polyhydroxy fatty acid , Petroleum-based biopolyesters and cellulose derivatives are the most commercially available bio-based polymers and bio-based polymers. Most studies associated with these materials are mainly concentrated in the field of biological degradable packaging materials, and there is currently no literature reporting to biodegradable geotextiles. Prambauer et al. On the comprehensive performance of the above materials and its application prospects in the geotextile industry, discussing different structures and related properties, as well as the availability and cost of polymers, mainly PLA and TPS can meet high performance geotechnics The cloth on the availability and price requirements of materials. Of course, in order to obtain the required mechanics and physical properties, it is still necessary to make the necessary modification and blending of the biological polymer.

Research and Development of High Performance Composite Geotextile Materials Agree in the Development of Civil Construction Project. Li Xinyi and others use polyester and low melting point fibers to produce acupuncture composite geotextiles, and use high-density polyethylene (HDPE) and ethylene-vinyl acetate copolymers (EVA) as the main raw material, using rolling process to produce drainage plates . Finally, the geotextile filter is thermally bonded to the drainage plate core to prepare geotextile water supply materials. Soil composite drainage material is more than two composite monomer materials, and has high water volume.

High-performance geotextile requirements for industrial fiber feedstocks must be very durable in various applications, so the selected industrial fibers need to have high stable, creep, and low shrinkage, ultra-high intensity or high modulus. Equivalence. Composite geotextiles are usually mixed by a variety of fibers, which combines different materials to function, finding suitable high-performance fibers have always been an important research direction for high performance geotextiles. The intensity and modulus of inorganic fibers such as glass fibers, basalt fibers, and carbon fibers are significantly higher than synthetic fibers. However, due to high production cost, inorganic fibers are restricted on large area applications on geotextiles. The fiberglass composite flux is complicated by the glass fiber woven base fabric and the short-fiber acupuncture non-woven fabric, which has high permeable, excellent anti-filtration, abrasion resistance. Basalt fiber soil has the advantages of environmental protection, high temperature resistance.

The country has drafted the latest filament spunning needles in 2008 and 2017, the short-fiber acupuncture geotextile and nonwoven composite geomembranes related national standards, and the production technology of corresponding geotextile products. A clear guidance is made by standard, supply conditions, and performance characterization methods. High-performance geotextiles are in actual engineering applications, it is inevitable to face extreme natural environments, such as extremely cold, fire, floods, and even earthquakes, so the research on the evolution of geotextiles in extreme environments is particularly important. Tongji University Civil Engineering College Feng Shijin teaches the dynamic shear strength of geostate membrane and nonwoven geotextile interface between geophysical film and nonwoven geotextile interfacial interfacial in seismic circulating load on the development of seismic coincidence. . The results show that the lubrication of water in the geotextile pores accelerates the development of interface shear deformation, and the shear intensity of the interface is positively correlated with the rate of displacement.

Dongyang Lai Chi Environmental Protection Technology Co., Ltd. has an annual output of more than 40 million square meters of elastic non-woven production line, SSS nonwoven production line, SMS non-woven production line, and a series of elastic deep processing equipment, professional production and sales nonwoven fabric, spinning Nonwoven fabric, elastic nonwoven fabric, medical nonwoven fabric, is your trusted nonwoven manufacturer .