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News > Dynamic industry > Silicone Market Chain

Silicone Market Chain

Silicon is an important petrochemical alternative materials, energy and electronic materials. Crustal abundance of silicon is 27 percent, second only to oxygen (46%), which is about 1000 times that of carbon, extremely rich resources, huge development potential. Large-scale, low-cost resources using silicon to produce energy and material needs of human society, and thus respond to the threat of fossil raw materials crisis, reduce carbon emissions and the greenhouse effect, to the future of human society is a must. Over the years, the development and utilization of silicon materials industry and are the focus of public concern.
Silicon metal

Silicon metal is also called industrial silicon or crystalline silicon, usually in an electric furnace and prepared by the reduction of carbon silica. Its primary use is as an additive in the production of semiconductor silicon and non-ferrous alloys, the starting material of silicone. 2013 Chinese silicon metal production increased by 26.1% to 1.488 million tons, the national average capacity utilization rate of 39.2%. Major domestic enterprises such as co-Sheng metal silicon silicon industry, Hubei three new silicon industry, Siziwangqi good-silicon industry, Yunnan Yongchang Silicon, Tin Fu silicon industry, Jingxin silicon industry. Since silicon metal production requires large amounts of energy, energy costs accounted for more than 50% of the cost. Therefore, Chinese silicon metal companies located in the southwestern region rich in hydropower resources, or northwest and northeast regions of low-cost power resources are concentrated.
High purity quartz

Quartz glass is a single oxide glass consisting of silica, silica Si-O bond strong, covalent and ionic bonds about half and half, is a typical network-forming oxides. Quartz glass has excellent physical and chemical properties: high purity, high mechanical strength, chemical stability, through a wide spectrum, thermal shock resistance, high temperature deformation, corrosion-ray radiation and electrical insulation. A low concentration of quartz glass industry, there is a certain scale mainly in North China (Beijing, Langfang), East China (Shanghai, Jiangsu, Zhejiang), Northeast (Liaoning), Central China (Hubei), etc., and to private enterprises . The main enterprises China Building Materials Academy, Beijing Jin Gelan Quartz Glass Co., Ltd., a long-chi Photoelectric Material Co., Ltd., Beijing Cade quartz Plastics Co., Ltd. Shanghai-Hua Shiying, Hubei Hua Shiying Philip Glass Ltd. and other.
Multi (single) crystal silicon

Polysilicon is a form of elemental silicon for the manufacture of transistor radios, tape recorders, color TV, VCR, computer and other basic materials in the electronics industry. In the new energy industry is an important raw material polysilicon production of solar cells, the general purity 6-9N. China is the world's largest producer of polysilicon in 2013 total capacity of 213,650 tons / year, production of 82,200 tons. The main enterprise of Jiangsu in the silicon industry Development Co., LDK Solar LDK, TBEA Xinjiang New Energy Co., Ltd., Luoyang Sino-silicon High-tech Co., and so on.
It refers to single-crystal Si single crystal silicon, polycrystalline silicon of high purity single crystal drawn from the furnace. Having substantially intact crystal lattice structure. Different directions of a different nature, is a good semiconductor material. General purity requirements in 9-12N. For the manufacture of semiconductor devices, solar cells and the like.
Silica

Silica is an amorphous silica (noncrystalline) polymorph. In general, each producing one ton of silicon metal byproduct may 0.3-0.5 tons microsilica. Silica is sometimes confused with fumed silica. Silica average particle size of 150 nm, 100 times smaller than the cement particles, the specific surface area of 15 to 30 m2 / g, and the primary particle size fumed silica is only about 5 to 7 nanometers, specific surface area as high as 150 to 300 m / g. Silica main application areas as high performance concrete reinforcing fillers, especially to improve its comprehensive strength, bond strength and abrasion resistance. After adding silica powder can reduce the chloride ion permeability of concrete to prevent corrosion of reinforced concrete. In addition, a large number of silica powder is also used in ceramics and refractories, and other fields.
Sol

Nanoscale silica sol particle dispersion in water or solvent. Since the SiO2 sol containing a large amount of water and hydroxyl groups, it may be expressed as silica SiO2.nH2O. Used for various refractory binders, coatings industry, can shell casting, a catalyst and catalyst carrier, cellophane anti-adhesive, pre-treatment agent of photographic paper, cement bags slip agent, kinescope dispersant, floor wax anti- slip and so on.
Monosilane

Monosilane is a colorless gas, alias four hydrogenated silicon, monosilane, the gas can ignite in contact with air and release a very strong white amorphous silica smoke. Press purity monosilane can be divided into industrial grade and electronic grade, electronic grade is mainly used in integrated circuits, flat-screen TVs, solar cells and other industries; the main purposes of industrial-grade single skeleton structure as chlorine silane and alkyl chlorides monosilane class , into a polysilicon, silicon oxide, silicon nitride, and other raw materials. 2013 silane industry overall operating situation is poor, the majority of enterprises started in intermittent state, the average operating rate of 13.8%, monosilane production of about 950 tons. The main business Baoding Tianwei Yingli New Energy Co., Ltd. (Fine Silicon Co., Ltd.), Zhejiang Zhongning Silicon Co., Ltd., Tianjin Tai Hang Group, Zhejiang Zhongfu silicon can Limited.

Silicone

Silicone resins are highly crosslinked network of polyorganosiloxane dual characteristics of both organic resins and inorganic materials with unique physical and chemical properties. Silicone resins are primarily used as insulating paint (including varnish, enamel, paint, varnish, etc.) impregnated with H-class motor and transformer coils, and used to impregnate the glass cloth, glass cloth made of stone Busi and motor casing, electrical insulation winding and so on. In addition, the silicone also be used as heat-resistant, weather-resistant anti-corrosion coating, metal protective coatings, construction waterproof coatings, mold release agents, adhesives, and secondary processing into a silicone plastic, used in electronic, electrical and defense industry on, as semiconductor packaging materials and electronic, electrical silicone according to their main purpose and cross-linking can be divided into silicone varnish, silicone coatings, silicone plastic and silicone adhesives and other categories. Silicone processing additives has a unique flexibility and compatibility has become a key component of pulp, tissue production.

Silicone Rubber

Silicone rubber is a made of oxygen and silicon polymers cross-linked into a unique synthetic elastomer. It is the perfect balance of mechanical and chemical properties, which can meet many of today's demanding applications require. Silicone rubber is silicone products, the largest output, the most widely used category of products. According curing mechanism can be divided into high-temperature silicone rubber vulcanized silicone rubber (HTV); RTV silicone rubber (RTV) molding and processing of liquid silicone rubber (LSR).

High temperature silicone rubber, silicone rubber mixing alias, solid silicone rubber. Is one of the most mature silicone rubber products, because of its good resistance to high temperature, weather, water-repellent, anti-arc, electrical insulation, physical inertia and other characteristics of the defense industry, health care, industrial and agricultural production and people It is widely used in daily life.
Development of China's high-temperature silicone rubber has been more mature, 2013 with an annual capacity has reached 549,000 tons / year, output reached 329,000 tons. The liquid silicone rubber that is added to the two-component liquid silicone rubber molding (LSR) has just started in 2013 with an annual capacity of 36,700 tons / year, an increase of 56.2%; production of about 17,700 tons, an increase of 17.2%. The product development is faster than the high-temperature plastic, some cases have emerged alternative application of high-temperature plastic phenomenon. At present, the main high-temperature silicone rubber companies have Xinan Chemical, East Grand, HTC, Blue Star, Hop Shing and so on. The liquid silicone rubber companies in Shenzhen Sen, Guangdong polymerization, Xinan Chemical, Dongguan New Oriental. RTV silicone rubber is generally low molecular weight (30,000 to 60,000). RTV silicone rubber at both ends of the molecular chain (sometimes in the middle there are) a high molecular weight each with one or two functional groups, at (air, water or a suitable catalyst) certain conditions, these functional groups may react to form the crosslinked structure. The main production enterprises in Guangdong Baiyun, Chengdu Si Bao, Guangzhou new exhibition, Hangzhou Zhijiang, Zhengzhou Zhongyuan.
Silicone / latex

Fluid is a class of Si-O-Si main chain, side chain organic group having a linear silicone polymer. Widely used in the textile, chemical, mechanical processing, chemical, electrical and electronics, medical and other industries. Usually silicone oil to keep liquid state at room temperature. As the molecular weight increases, the viscosity increases, and therefore the viscosity of the silicone oil is an important physical property indexes. At present, the common commercial silicone oils include methyl silicone oil, vinyl silicone oil, phenyl silicone oil, methylphenyl silicone oil, methyl hydrogen silicone oil, polyether-modified silicone oil. Commonly referred to as silicone oil used directly as a product, and silicone oil as raw material or additive, added thickeners, surface active agents, solvents, fillers and the like to improve various properties, through a particular process formulated composite , emulsions, solutions and other products, called silicone secondary processed products. Domestic production of silicone oil company has Bluestar new material, Xinan Chemical, heaven-sent, standard American, Colin Yichang and other enterprises, production enterprises are mainly emulsion transfer of shares and the German-American chemical industry.
Functional silanes

Functional silanes and silicone rubber, silicone oil and silicone resin and a silicone material called four categories; from the structure, usually the main chain structure of -Si-OC- silicone small molecules collectively referred to as functional silanes, and the the backbone of small molecule intermediates and polymer macromolecules -Si-O-Si- structure generally called silicone, that silicone rubber, silicone and silicone products; from the functional point of view, multi-functional silanes hybridization structure, the majority of products in the same molecule containing both polar and non-polar types of functional groups can be used as an inorganic material and organic material bridge interface or directly involved in a crosslinking reaction of the organic polymeric material, thereby significantly improving the material properties. The main producers have a new sky and new materials, Nanjing Shuguang, Jingdezhen Wang Bo, Jingzhou Jianghan, Guotai-Huarong, Wu silicone, Jiangsu dawn like.
Fumed silica

Widely used in various industries, mainly used for rubber reinforcing agents, plastic filling agent, ink thickener, soft metal polishing agent, insulation insulation fillers, bleaching agents, matting agents, senior cosmetics packing and coating materials, various fields of medicine, environmental protection, and to provide a basis for new materials and technology to ensure the development of related industries. Compared with conventional materials because it is magnetic, catalytic, optical absorption, thermal resistance and melting points, etc. exhibit specific functions, and thus give increased attention. China fumed silica market almost by several large foreign companies such as Degussa, Cabot, Wacker, Tokuyama and other monopoly, which Wacker, Cabot, Tokuyama has long been building a large production base in China , its production capacity of 1.6 million tons / year (a joint venture with Dow Corning), 1.5 million tons / year (with the Blue Star Joint Venture) and 10,000 tons / year. In addition to foreign investment and joint ventures, Chinese domestic production capacity of the larger companies, including Guangzhou GBS High; Xinan Chemical; Shandong Dongyue; Tangshan Fu Chemical 奥瑟亚 three; Zhejiang Fuji PL.

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