Geosynthetics is a new type of geotechnical engineering materials. It uses natural or man-made synthetic (plastic, chemical fiber, synthetic rubber, etc.) as raw materials to make various types of products. Artificial soil, ground and other layers of soil, Play the role of enhancing (landscape) or protecting soil. At present, it has a wide range of land, railways, hydropower, construction, seaports, mining, military, environmental protection and other fields of engineering.
The development of modern geosynthetics is based on the development of synthetic materials-plastics, synthetic fibers and synthetic rubber. In 1870, W.John and ISHyatt in the United States invented a plastic synthesized with nitrocellulose and camphor plasticizer-"celluloid". In 1908, Leo Baekeland synthesized plastic plastic. Before the 1950s, polyvinyl chloride (PVC), polyethylene (PE), low-density polyethylene (LDPE), polypropylene (nylon), polyester (PET), high-density polyethylene (HDPE) and polypropylene ( PP) Solvents come out. With the successful regeneration of various plastics, various types of synthesis have been produced one after another.
Around the 1930s, modern geotechnical materials began to use various geotechnical building materials. Geosynthetics started in 1958 in the United States by RJ Barret as the United States' use of polyvinyl chloride textiles as a coastal block stone slope bedding engineering layer. This geosynthetic material is mainly woven textiles. However, because the strength of woven geotextiles has lighter directionality and the price is also high, by the end of the 2060s, weaving non-woven fabrics (non-woven fabrics) appeared in Europe and greatly promoted the application and development of geosynthetics. . Geosynthetics, geomembranes, geonets, geonets, geonet mats, and geocells, etc., using synthetic polymers as raw materials, have come out and have developed rapidly, following the masonry, wood, steel, and cement. Five major engineering building materials.
In order to reasonably classify geosynthetics, J. RGiroud and J. Perfetti took the lead in 1977 to call permeable polymer materials "Geotextile" and impermeable polymer materials as "Geomembrane". With the emergence of other types of geosynthetics using synthetic polymers as raw materials, JEFluet suggested the use of various types and materials of "geosynthetics" in 1983. Classification system of related products (geotextiles, geomembranes and related products). In 1983, JR Giroud proposed a geosynthetic classification method, that is, geotextile fabrics are divided into four categories (knitted fabrics, woven fabrics, non-woven materials and textiles), and related products are divided into six categories (strip material knitted fabrics, Geotextiles, geonets, geonets, plastics and composite materials), but geotextile-related products for this use have not yet been determined. The world of synthetic materials (the world of geosynthetics) collects geonet synthetic materials into five categories, namely, textiles (woven, non-woven or non-woven), geomembranes, geogrids, geotechnical materials, geotechnical drainage materials and geocomposite materials. A decentralized system spills the idea of geotextiles as the prototype, and assembles the foundation for a new individual collective.
Work cloth is divided into filament geotextile and short silk geotextile. The full name is broken fiber needle-punched non-woven geotextile and polyester filament anti-stick needle-punched non-woven geotextile. The specifications of geotextile range from 100 grams to 1000 grams per square meter, and the price ranges from 0.6 yuan to 7 yuan per square meter. The slope protection of the steep slope is carried out on the geotextile
Geotextile testing items: Geotextile products are tested according to the national standard GB/T17638-2008. The test indicators are weight and breaking strength, CBR breaking strength, tearing strength, equivalent pore size, vertical permeability coefficient, thickness and other indicators
Filament woven geotextiles are widely used in concrete isolation and drainage. It is mainly used for layer isolation, railway subgrade, highway subgrade, earth-rock dam engineering and river improvement engineering. It mainly plays a role in preventing the mixing, pollution and separation of different materials, such as placing geotextiles between two different materials, or between different particle sizes of the same material, and between the soil surface and the superstructure. Separate the geotextiles from each other.
In addition to good mechanical properties, it also has good longitudinal and transverse drainage properties, good elongation properties and good chemical stability, such as biological resistance, acid and alkali resistance, and aging resistance. At the same time, it also has a wide pore size range, tortuous pore distribution, excellent permeability and filtration performance
The composite geomembrane is pasted with geotextile on one or both sides of the plastic film. Specifications and models include: one cloth and one film, two cloths and one film, two films and one cloth, three cloths and two films (generally one cloth and one film, two cloths and one film), net weight 200-1200 grams, total width; 1-6 meters. High values of physical properties such as stretching, tearing, cracking, etc., composite geomembrane products have high compressive strength, strong stretchability, large deformation elastic molds, strong acid and alkali resistance, corrosion resistance, aging resistance, and impermeability levels Good characteristics and other characteristics. It can meet the requirements of water conservancy engineering (man-made lake), municipal engineering, engineering construction, transportation, subway station, tunnel construction, breeding (yakuchi), method, fish pond aquatic product breeding. In construction projects, there must be construction majors such as seepage prevention, protection, structural reinforcement, and rust prevention. Select fiber materials and add anti-aging agents in the manufacturing process, so it can be used in non-traditional temperature and natural environments. It is common in the anti-seepage solution of river embankments, sewage ditch, and pollution-resistant solution of waste yard.
From September 25 to September 27, the 10th Chinese National Geosynthetics Conference and 2020 China International Geosynthetics Products and Equipment Exhibition was grandly held in Chengdu. Our YINGFAN company attended this event as an exhibitor. We showed our hot sale product, 1mm pond liner and other thickness liners, geotexitle, geocomposites, geogrids to all the visitors in this event. Meanwhile, we also showed our professional installation service.
Our YINGFAN company recently received two prizes and one thanks giving letter from Chinese Technical Assocition on Geosynthetics(GTAC) and Shanghai Chemical Building Material Trade Association (SCBMTA). The "Certificate of Honour" and "Thanks Giving Letter" are from GTAC and "Quality Guarantee Four Star Enterprise“ are from SCBMTA. The two organizations are very famous and influential in Chinese geosynthetics industry.
In order to go all out to support the winning of this anti-epidemic battle, our YINGFAN company, as a geosynthetic supplier, in the conditions of assuring the staff health and safety recently focus on this task and takes emergent actions to delivery material, organize production and logistic, without discussing conditions and regardless of all costs. Owning to our company’s efforts for this tough battle, the Shanghai official television media team, introduced by Zhujiajiao Industry Park officials and local government officials, came to have an interview with our general director, Mr Heyong and our relevant staff on Feb 12, 2020.
Right now, it is the 2019-nCov epidemic outbreak period in China. Based on this virus characteristics and World Health Organization clarification, it is safe to receive a letter or package from China and people receiving packages from China are not at risk of contracting 2019n-CoV. From previous analysis, coronaviruses do not survive long on objects, such as letters or packages.
YINGFAN high density polyethylene liners are rapidly deliveried to support 2019-nCov Hospitals Projects in Wuhan City, named Huoshenshan Hospital and Leishanshan Hospital which are as part of its efforts to contain and treat patients suspected of contracting coronavirus, spreaded quickly to whole China mainland and some foreign countries, since the beginning of Dec, 2020.
To celebrate company's 10th anniversary, the lunar new year Spring Festival and give many thanks to our staff, our company had an annual ceremony on Jan 18, 2020 at Zhujiege Hotel located in Zhujiajiao Twon, Shanghai city. All of our company’s staff, their families, some of our company’s clients, suppliers, cooperated partners gathered to attend this ceremony and had a feast. Awards were prized for 10 years' working experience staff, annual excellent performance staff and top 3 sales. Our company managerial staff made their speeches.
Our country’s lunar new year, the Spring Festival, is coming soon. This festival is our country’s biggest and most important traditional festival in each year. This lunar New Year’s Eve, year of the rat, is on Jan 24, 2020. And our official holiday is from Jan 24 to Jan 30. Our company’s holiday is arranged as the following: Jan 19th to Jan 31st 2020, Factory workers holiday; Jan 23rd to Jan 31st 2020, Office staff holiday.
The brilliant new 2020 year is coming soon. Our Shanghai Yingfan Environmental Engineering Co., Ltd. gather here to wish you happy new year in 2020. May the glow of New Year candle fill your heart with peace and pleasure and make your New Year bright. May your career be smooth and prosperous in the new year.
Here we will look back our 2019 events in our company. And wish our company be again a booming new year in 2020.
Merry Christmas to all of friends.
Cambodia International Construction Industry EXPO is one of the biggest Expos in Cambodia that supported by Local and International Institution. Our Shanghai Yingfan company, as an exhibitor in this expo 2019, we showed products include hdpe geomembrane liner, permeable geotextile fabric, bentonite barrier, geonets drain composites, geocomposite membrane, and so forth, plus our installation services.
MYANBUILD 2019, Myanmar’s No.1 platform for the building and construction industry was held at Myanmar Expo Hall, Yangon from 28-30 November 2019. Our Shanghai Yingfan company, as an exhibitor in Myanbuild expo 2019, we showed products include geomembrane HDPE liner, geotextile cloth, bentonite blanket, geocomposites, geogrid mesh, and so forth, plus our installation services.
We Yingfan company recently attended the 8th Geosynthetics Testing Technology Training organized by National Test Center of Polymer and Chemical Building Materials from Oct 24th to Oct 25th.