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
1. 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 hy-drofluoric acid and concentrated bases.
2. Specification: Q/SHG19-2008ItemIndex
Product: LM200
Apparent: White solid colloidal micro-particle
Specific surface area m2/g: 150�±15
PH value3.6~4.3
Heating loss weight % (m/m) â?¤1.0
Burning loss weight % (m/m) â?¤1.0
Apparent density g/Lâ?¤60
3. Uses: It is used widely in silicone rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.
LM-150: used widely in silicone acid rubber, sulfurized silicone rubber in ambient temperature (low water content), silicone neutral rubber.
LM-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.
LM-300: used widely in resin thickener, thickness agent for synthetic lubricating ester, resin thixotropic agent for electronic component.
LM-380: used widely in reinforcing agent for silicone rubber, medical silicone rubber for transparent artificial organs and artificial heart etc.
4. 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.
5. Store and transport: placed in vent and dry storehouse and prevented from humid, water, pressure and throwing during transport.
Micro silica also known as fume, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 mm. The main field of application is as pozzolanic for high performance concrete because of its extreme fineness and high silica.
Applications :
Silica is added to Portland 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.
Advantages :
Addition of silica 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.
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.
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
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.
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
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 <7.0%
45m >90% min
Density >600kg/m3
Packing - jumbo bags 900kg/packet or by buyerf+s request.
Certificate : sgs certificate or others
