What Will Be The Development Direction Of Vinylon Industry During The "13Th Five-Year" Period?

As existing synthesis

The largest moisture absorbing species has good softness and warmth retention properties.

A good name.

However, because of its longer production process, the comprehensive properties of fibers are not as good as polyester, nylon and acrylic, and the overall scale of the industry is relatively small.

What is the development of China's vinylon fiber industry during the "12th Five-Year" period? What are the varieties of vinylon in China?

"What is the development direction of Vinylon Industry during this period?

From civilian to industrial expansion

At present, the production capacity and output of vinylon fiber and PVA in China are ranked first in the world. The application of products is also changing from single civilian to high-end clothing, clothing, paper making, construction, water conservancy and other industrial fields.

In 2011 ~2014, the output of vinylon fiber in China showed a continuous growth trend, which was 59 thousand and 100 tons, 87 thousand and 100 tons, 100 thousand and 900 tons and 110 thousand and 700 tons (up 87.30% in 2011).

In January 2015 ~11, the production of vinylon fiber was 69 thousand and 200 tons, a decrease of 5.75% compared with the same period last year.

Meanwhile, by the end of 2014, the production capacity of vinylon material polyvinyl alcohol (PVA) in China has accounted for about 65% of the total capacity of the world.

During the "12th Five-Year" period, China's main vinylon enterprises were Anhui Wan Wei Group, Sinopec group Sichuan Vigny nylon plant, Ningxia geochemistry, Inner Mongolia double Xin environmental protection material stock, Hunan Xiang Wei, Fujian Fu Wei shares, etc. PVA production capacity was 200 thousand tons, 165 thousand tons, 130 thousand tons, 130 thousand tons, 95 thousand tons, 60 thousand tons, respectively, accounting for 14.4%, 11.9%, 9.4%, 9.4%, 6.9% and 6.9% of the total capacity of PVA in China.

Anhui Anhui high strength and high modulus PVA fiber has an annual capacity of about 40 thousand tons, and Fujian's annual production capacity is about 28 thousand tons.

In 2015, the PVA scale of the world's major enterprises has reached 680 thousand tons. Among them, the Japanese Cola company ranked 150 thousand in the 150 thousand tons / year. The Taiwan Taiwan Changchun Petrochemical Company ranked second with the North Korea's Shun Chi plant, the United States, Serra and Japan's synthetic chemistry, with a scale of 100 thousand tons / year.

During the "12th Five-Year" period, China's Vinylon Industry has made some achievements and breakthroughs in new product development, new process research and development, new technology research and new equipment development, such as boron production technology and 3S technology in vinylon production.

In May 2015, the new product FS-18 suspension dispersant developed by the Vigny fiber plant in Sichuan successfully reduced the insoluble substance from vinylon products from 3% to less than 1%.

High performance vinylon can be used in the field of protective equipment and other fields.

At present, the main two varieties of vinylon are high strength high modulus vinylon fiber and water soluble vinylon fiber.

Among them, the water soluble vinylon fiber plant has a high operating rate, and the high strength and high modulus vinylon fiber production capacity has been affected by the European economic downturn. The market demand is shrinking, and the overall supply exceeds demand.

The future development of Vinylon Industry is mainly based on the development of functional and special properties of conventional acetal fibers, water soluble fibers and high strength high modulus vinylon fibers.

The high performance vinylon fiber is made of PVA with super high molecular weight and high stereo regularity as raw material and new special spinning technology.

At present, the main spinning methods of high strength and high modulus vinylon fibers are wet spinning, gel spinning, wet spinning, dry wet spinning and melt spinning.

Among them, the higher the polymerization degree of the super high molecular weight PVA, the higher the breaking strength of the fibers. When the polymerization degree of PVA is 6868, the breaking strength of the fiber is 15.3% / PVA; when the polymerization degree of PVA is 7000, the breaking strength of the fiber is 16.06% / PVA; when the degree of polymerization is 8000, the breaking strength of the fiber reaches 18.6%.

High performance polyvinylon fibers are mainly used in protective equipment, reinforced plastics, reinforced concrete and other fields.

In the application of protective equipment, high performance polyvinylon fibers have high strength, modulus and good adhesion. When aramid fibers are combined, some aramid fibers are replaced by proper structural matching.

In the application of reinforced plastics, high performance vinylon filament can be used as skeleton material, various pipes and reinforcing materials for adhesive tape.

In the application of reinforced concrete, high strength and high modulus vinylon fibers can not only effectively inhibit the early plastic cracks of concrete, but also improve the flexural toughness of concrete.

Among them, when the volume content of vinylon fiber and polypropylene fiber is 0.11%, the toughness index of vinylon fiber reinforced concrete is 47% higher than that of polypropylene fiber reinforced concrete.

Vinylon fiber concrete can still bear the load after cracking, making the concrete change from brittle failure to ductile failure, which significantly improves the deformation capacity of concrete and reduces the occurrence of safety accidents.

High performance vinylon fiber is the best substitute for asbestos carcinogenesis.

In December 27, 2012, the Ministry of industry and information technology, the Ministry of science and technology and the Ministry of environmental protection issued a circular on the catalogue of the "toxic and harmful raw materials (products) substituted by the state (2012 Edition)" issued by the Ministry of industry and information technology. Asbestos has been listed as the eighty-first category of toxic and harmful raw materials in the third category of "promotional categories". The recommended product is polyvinylon fiber.

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Functional vinylon can be used for flame retardancy, energy storage and so on.

Functional vinylon fiber is made from PVA emulsifying, dispersing and water solubility, blended with other functional materials or polymers, and prepared by composite spinning.

Functional PVA fibers can be applied to flame retardancy, energy storage, far-infrared heating, and biological reaction carriers.

In terms of flame retardant applications, high strength flame retardant vinylon is prepared by hydrogel spinning technology.

Among them, the flame retardant dispersant is blended with PVA solution before spinning, and the flame retardant disperses uniformly in the fiber. The epidermis forms a dense structure, which is conducive to the permanent flame retardant in the fiber and forming permanent flame retardant.

According to the requirements of relevant indicators, high strength flame retardant vinylon has the characteristics of high strength, flame retardance and abrasion resistance, and no droplets in combustion. Besides, it should also have the performance index of flame retardant content above 20%, limiting oxygen index of more than 29, fiber strength up to 7.5 crest / moisture content, moisture regain 6%, dyeable (reduction, activity) and so on.

The fabric woven by pure spinning or blending is mainly used for steelworkers' work clothes, fire-fighting clothing, training clothes and industrial textiles.

In terms of energy storage applications, energy storage materials can be obtained by spinning before injection and blending with PVA solution.

According to Ye Guangdou, director of the Institute of chemical fiber research, School of polymer science and engineering, Sichuan University, the thermal enthalpy of the storage vinylon fiber studied by Sichuan University is 30 Joule / gram, which is much higher than that of the international Outlast fiber heat enthalpy value of 12 Joule / gram, and the energy storage effect is better.

Far infrared heating applications, far-infrared ceramic powder can radiate more far-infrared rays than normal objects.

PVA has excellent emulsifying and dispersing properties. It can contain a lot of far-infrared ceramic powders. After spinning together, far-infrared thermal fibers can be obtained.

The fiber is made into underwear, which has good hydrophilicity and comfort. Thermal insulation promotes blood circulation, activates the activity of biological macromolecules, facilitates recovery and balance of functions, and promotes and improves blood circulation.

In the application of biological reaction carriers, vinylon fibers, especially superfine polyvinylon fibers, have strong electrostatic adsorption ability to enzymes after sulfonation. They are excellent carriers for enzyme immobilization and have the function of immobilizing microbes and cells.

"Two shifts" and "two changes" lead the pition

With China's economic development entering a new normal, China's vinylon and PVA industry has entered a new normal development. The domestic and PVA industries have been completely broken by the unified market of state owned enterprises. The industry competition is more intense, and the industrial development has entered the pition period and adjustment period.

Wu Fusheng, chairman of Anhui Anhui Wei, pointed out that China's Vinylon Industry is facing "two shifts" and "two changes" under the new normal.

The "two pfers" refer to the pfer of PVA from the world to China, and the shift of China's PVA to the West. The "two pformation" refers to the pformation of industry from extensive to structural upgrading, and the pformation of industries from factor driving to innovation driven.

Wu Fusheng said that "13th Five-Year" is the pition period and the depth adjustment period of the Vinylon Industry. The development goals of the industry should focus on structural adjustment and industrial upgrading. The main contents include product structure adjustment, product chain extension and application development.

Wu Fusheng suggested that the development of the Vinylon Industry should focus on two aspects.

First of all, in accelerating the research field of vinylon and PVA application, enterprises should make full use of the national environmental protection department to vigorously promote the application of water-based coatings, carry out the application of PVA in the field of water-based coatings, and increase the application of vinylon in building materials, water conservancy projects, municipal construction and road and bridge.

Secondly, in strengthening the development of new products, first, enterprises should establish technological development centers or research institutes, and set up professional R & D teams to enhance their production technology and innovation ability; second, the industry should set up a "strategic alliance of vinylon technology innovation" to combine production, learning, research and Application, and jointly develop new varieties and develop new markets; third, enterprises should track the development and application of advanced technology and equipment in foreign countries, enhance their production capacity and improve product quality; fourth, increase the protection of intellectual property rights, and encourage and protect technological innovation of enterprises.

Wu Fusheng also said that next, Wan Wei will carry out further technological innovation in aspects of product upgrading and deep processing, fine chemicals and new materials, and strive to become the leader of China's PVA industry.