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Features Of Micro Silica (Silica Fume) Micro Silica also known as Silica fume. It is a by product of producing silicon metal or ferrosilicon alloys in smelter using electric arc furnaces. It is a grey coloured powder, pozzolanic in nature. Applications Concrete Industry Refractory Rubber Industry Anti caking agent Pellet Binder
Silica fume, also known as micro silica is an amorphous silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy productionThe main field of application is as pozzolanic material for high performance concrete. Technical Specifications: SiO2 Ã¢?? Silica : >90% Color : Grey Application Because of its extreme fineness and high silica content, silica fume is a very effective pozzolanic material. Standard specifications for silica fume used in cementitious mixtures are ASTM C1240, EN 13263. Silica fume is added to cement concrete to improve its properties, in particular its compressive strength, bond strength, and abrasion resistance. These improvements stem from both the mechanical improvements resulting from addition of a very fine powder to the cement paste mix as well as from the pozzolanic reactions between the silica fume and free calcium hydroxide in the paste. Addition of silica fume also reduces the permeability of concrete to chloride ions, which protects the reinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicing salts) and saltwater bridges. Effects of silica fume on different properties of fresh and hardened concrete include a) Workability: With the addition of silica fume, the slump loss with time is directly proportional to increase in the silica fume content due to the introduction of large surface area in the concrete mix by its addition. Although the slump decreases, the mix remains highly cohesive. b) Segregation and bleeding: Silica fume reduces bleeding significantly because the free water is consumed in wetting of the large surface area of the silica fume and hence the free water left in the mix for bleeding also decreases. Silica fume also blocks the pores in the fresh concrete so water within the concrete is not allowed to come to the surface. Application Areas: High performance concrete High strength, low permeability concrete Industrial flooring Water tanks and sumps Chemical storage tanks Basements and sewerage pipelines Refractory mixes etc. Petroleum Referineries Tunnels
Ultrafine Silica Powder (commonly known as superfine white carbon black) is a white, non-toxic, tasteless and amorphous inorganic fine chemical product, which is made through chlorosilane's hydrolysis process in high temperature oxyhydrogen flame. By adjusting the process conditions, silica powder's primary particle size can be produced as 7~40 nanometer, and the specific surface area of the product can be 50-400m2/g. Since ultrafine silica has the features of small particle size, large surface area, high surface activity properties, the product is widely used in rubber, coating, adhesive, paint, printing ink, plastics, cosmetics, agriculture, medicine and other fields. It has various functions such as good reinforcement, thickening, thixotropic, extinction, UV resistance, sterilization and etc.
Fumed Silica is also popular as white carbon black and pyrogenic silica. Fumed Silica is non toxic, non-polluting, high-tech inorganic fine white chemical. In high purity fumed silica the silica content is above 99.8%. The particle size varies from 7 to 40 nm. This new ultra-fine inorganic material become a irreplaceable material due to its small particle size, large specific surface area, strong surface absorption, surface energy, heat resistance property. Production Process: Fumed silica is made from flame pyrolysis of silicon tetrachloride vaporized in 1800C electric arc. Available Grade: PME-SS-150, PME-SS-200, PME-SS-300, PME-SS-380. Special request for customization can be prepared. Technical Details: Parameters PME-SS-150 PME-SS-200 PME-SS-300 PME-SS-380 SiO2 99.8% 99.8% 99.8% 99.8% pH Value 3.7-4.5 3.7-4.5 3.7-4.5 3.7-4.5 Specific Surface Area, m2/g 150 30 20 30 300 30 380 30 105oC Volatile Mass Fraction, wt% 1 1.5 2 2 Burning Loss Weight Mass fraction, wt% 1.5 2 2 2 45um Sieve residue, mg/kg 250 250 250 250 Appearance Density, g/l 50 50 50 50 Al2O3 mass fraction, mg/kg 400 400 400 400 TiO2 mass fraction, mg/kg 200 200 200 200 Fe2O3 mass fraction, mg/kg 30 30 30 30 Chloride mass fraction, mg/kg 250 250 250 250 Carbon mass fraction, mg/kg 0.2 0.2 0.2 0.2
Introduction Fumed silica is hydrophilic fumed silica(silicon dioxide). It is high purity and fluffy powder with typical specific surface area of 150g, 200g, 300g, 380g. Furthermore, it is characterized by an x-ray amorphous structure. Positive effects: Optimum adjustment of rheology during processing Reinforcement of silicone elastomers Thickening of non-polar liquids Free-flow of foodstuffs and industrial powders High chemical purity Excellent insulation properties, even at high temperatures Conversion of liquids to powders, e.G. Pharmaceuticals, cosmetics Gelification of battery acids Rheology control of greases and lubricants Detailed application area: Coating:ep-, up-, pu-, acrylic resinpmma/mmapvc plastisol Sealants:pib, pu, acrylic resin, butyl rubber, rtv silicone sealant Film:hydrate celluloseperpipvcpapepp pvcf Gel coat:laminated resinupmfpf resin Casting film:puepacrylic resin, rtv silicone rubber Cable:htv silicone rubber pe Foam plastic and polymer:epspvcppsappa ep Adhesives:epuppp pupvac Silicon rubber:rtv-1crtv-2c lsr(vms) Fluororubber Natural rubber
Characteristics Control the liquid system, adhesive, polymer¡¡¥s rheology and thixotropy. As additive agent used to prevent subside, thickening and prevent sagging. Reinforce hrc high temperature sulfuration silicon rubber and rtv-2k room temperature sulfuration silicon rubber. Improve the quality of the powder, and improve the liquidity and anti-blocking characteristic. Application Paint and coating . Unsaturated polyester resins, laminating resins and gel coat. Hrc high temperature sulfuration silicon rubber and rtv-2k room temperature sulfuration silicon rubber. Adhesive and fluid sealant Printing ink cable rubber plant protection food and cosmetics Paper and pe bag 10kg/bag
Hydrophilic Fumed Silica A.Characteristic: It is a white and colloidal micro-particle with its primary micro-particle from 5-40 nm and has obvious properties such as thixotropy, reinforcing, thickening and filling etc. and is insoluble in all kinds of solvents and liquids except hydrofluoric acid and concentrated bases. It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries. F-150: used widely in silicone acid rubber, sulfurized silicone rubber in ambient temperature (low water content), silicone neutral rubber. F-200: used widely in sealing ring, sealing gasket, petroleum pipeline, insulator, tablet powdered preparation, artificial viscera, infusion tube, latex nipple and high quality oil ink. F-380: used widely in reinforcing agent for silicone rubber, medical silicone rubber for transparent artificial organs and artificial heart etc. Packing: packed with multi-layer paper plastic compound bag with net weight of 5 kg or 10 kg, or packed by whole plastic seal for users having special demand on water content. 10kg per bag
Fumed silica (CAS number 112945-52-5), also known as pyrogenic silica because it is produced in a flame, consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles which then agglomerate into tertiary particles. The resulting powder has an extremely low bulk density and high surface area. Its three-dimensional structure results in viscosity-increasing, thixotropic behavior when used as a thickener or reinforcing filler. Fumed silica has a very strong thickening effect. Primary particle size is 550 nm. The particles are non-porous and have a surface area of 50600 m2/g. The density is 160190 kg/m3. APPLICATION Paints and coatings Unsaturated polyester resins, laminating resins and gel coats HTV- and RTV-2K-silicone rubber Adhesives and sealants Printing inks Cable compounds and cable gels Plant protection Adhesives and sealants Chemical mechanical planarization (CMP) Coatings Composites Food additives Greases Pharmaceuticals Printing and packaging Silicone sealants Skin and beauty care product
It is white, loose, amorphous, non-toxic and non-odorous nonmetal oxide. Due to the nanometer effect, it has excellent properties, such as reinforce, bodying, thixotropy, insulation and others.Therefore, it can be widely used in the rubber, plastic, paint coating, adhesive, seals and other polymer industrial area. Surface Area (m2/g): 150, 200
Fumed silica is the superfine micro-nano fine chemical product , which is divided into hydrophilic type and hydrophobic type in accordance with their different surface treatments, its appearance is white powder , native particle size ranges from 5nm to 40nm, with signficant functions of thixotropy, reinforcing, thickening and filling. it is widely used in the industries of rubber , sealant, plastic , resin, paint, printing ink, papermaking, medicine, cosmetics food etc.
Fumed silica Sio2 Xysil fumed silica is produced by flame without superficial treatment. Our products classified into four grades mainly according to bet surface area: xysil150, xysil200, xysil300 and xysil380. Package :10kg /bag Fumed silica for adhesive
Xysil hydrophilic fumed silica produced by henan xunyu chemical is synthetic, amorphous fumed silica with bet surface area from 150 to 380 m2/g. Xysil fumed silica is produced by flame without superficial treatment. Our products classified into four grades mainly according to bet surface area: xysil150, xysil200, xysil300 and xysil380. Xysil fumed silica is widely uesed in coating , paints , adhesive , sealant, upr, rtv and htv and so on .
Fumed silica is the superfine micro-nano fine chemical product, which is divided into hydrophilic type and hydrophobic type in accordance with their different surface treatments. Its appearance is white powder. Native particle size ranges from 5nm to 40nm, with significant functions of thixotropy, reinforcing, thickening and filling. Therefore, it is widely used in the industries of rubber, sealant, plastic, resin, paint, printing ink, papermaking, medicine, cosmetics, food etc.
Fusil-200 is 99% purity nanoparticles silica organic silica industrial raw material with a specific surface area of 200 m2/g .The original particle size can be 5- 40 nm. Its a kind of high purity white colloidal powder. It is mainly used for high-temperature vulcanized silicone rubber, organic silicone defoamer, advanced printing ink, powder coating, PVC resin, unsaturated polyester resin thickening, thixotropic agent, pharmaceutical powder, tabular preparation, cosmetics etc. Applications Paints, Coatings, Printing inks and unsaturated polyester resins Sealants and Silicone Adhesive Elastomers, especially HTV and RTV Silicone rubber Films Cosmetics and Heat insulator Properties Reinforcing filler in elastomers Theology and thixotropy control of liquid systems Used as anti-settling, thickening, anti-sagging agent ¬Improvement of free flow and anti-caking ¬Characteristics of powders High transparency
Basisil-200 is a hydrophilic fumed silica with a specific surface area of 200m2/g, and it is synthetic, hydrophilic, amorphous silica. The original particle size can be 5- 40 nm. ItÃ¢??s a kind of high purity white colloidal powder. Widely used in coatings, printing ink, resin, silicone sealant, adhesive etc.
Sio2 85% min H2o 2% max Loi 3% max Specific surface area(b.E.T) : 15, 000-27, 000sqm/kg Pozz. Activity :110% min Bulk density : 550-700kgs/m3; Packing : 850-900kgs/jumboo bag ; or packing as your requirement Qualify: sgs certificate Supply capacity : 1000 tons per month Payment terms: t/t or l/c Delivery time : 15 days Jumbo water aproof bag 900kgs/bag 20bags/container
Silica fume We supply the undensitied silica fume which is a by-product during melting silicon metal or ferro silicon for long-term, silica fume, also referred to as microsilica or fumed silica, is a by-product material that is used as a pozzolan. This by-product is a result of the reduction of high-purity quartz with coal in an electric arc furnace in the manufacture of silicon or ferrosilicon Customs code: 28112200 Specifications and price: Sio2 contents >85%-92% I.L 90% min Density >600kg/m3 Packing - jumbo bags 900kg/packet or by buyerf+s request. Certificate : sgs certificate or others
Silica fume We can supply the silica fume, which is a by-product during melting fused silicon or ferrosilicon for long-term. The silica fume is suitable for industrial applications, particularly in cement manufacture, it is used in concrete&morter , and also used in refractory industry. Best price in china, if you are interested in our products, please contact with us!