Archive for the ‘Hollow Glass Microspheres’ Category

For these reasons, hollow glass microspheres applications market is shrinking, this trend continues, we have reason to worry about the hollow glass microspheres thus eventually disappear from the market.On the contrary, the development of market Cenospheres more positive, the current domestic market a “prosperity”, coupled with the domestic thermal power plant transformation, yields drift beads have been great as before, floating bead supply shortage, the market purchase prices soared, but it is few people to care about foreign imports cenosphere is in what areas, and what is the result of deep processing, and then finished with what kind of price movement of domestic sales.

In such a big situation, Sinosteel Maanshan Institute of Mining Research Co. spent heavily to introduce high-performance hollow glass bead production lines once the market, with its high compressive strength, low oil absorption and low thermal conductivity and a reasonable sale price is widespread concern, and gradually occupied the hollow glass microspheres vacuum market.Our hospital with hollow glass microspheres to market in a responsible manner the situation and re-regulate its market position and through practical work hard and continue to strengthen the production, use of technology, resources, markets and group advantage, set up factories in Ma On Shan, efforts let the steel horse mine hospital beads became a core technology, China’s leading, world-class manufacturing enterprise hollow glass beads, hollow glass microsphere product reunification standards.Application of hollow glass beads beads market has basically been excavated, mainly used in: thermal insulation coatings, anti-corrosion coatings, heat resistant coatings, powder coatings, fire retardant paint, plastic modified materials, filled with ordinary plastics, glass and steel products rubber products, oil and unsaturated resin filler (glass fiber reinforced plastic). Market feedback is good, even for some time shortage phenomenon, this phenomenon is not accidental, but inevitable trend of the market.

Light weight; bulky
Hollow glass microspheres density of about one dozen points of traditional filler particle density, after filling can greatly reduce the weight of the base product, alternative and save more resin production, reduce product cost.

Has organically modified (lipophilic) surface
Hollow glass beads wetting and dispersing readily be filled in the most thermosetting thermoplastic resin, such as polyester, epoxy, polyurethane and the like.

High dispersion, mobility
Since china glass microsphere are tiny balls, the liquid resin than the sheet-like, acicular or irregular-shaped filler even with good fluidity, so that excellent filling performance. More importantly, such a small bead is isotropic, it does not produce a result-oriented in different parts of the shrinkage caused by inconsistent ills, ensure that the product is dimensionally stable and will not warp.

Insulation, sound insulation, insulation, low water absorption
Internal hollow glass microspheres is rarefied gas, so it has the characteristics of noise, heat, and is used as a variety of insulation, excellent sound insulation filler products. Thermal insulation properties of hollow glass microspheres can be used to protect the product is subjected to alternating between heat and quench emergency conditions caused by thermal shock. Higher specific resistance, low water absorption so that it can be widely used in processing the cable insulation.

Low oil absorption
Spherical particles determines the minimum specific surface area and low oil absorption, use of the process can significantly reduce the amount of resin, even under the premise of a high added amount of the viscosity is not increased much, greatly improved the production operating conditions, production efficiency increased by 10% to 20%.

For example: by adding water dilution, plus hollow ceramic microspheres method, add the foam method. Dilution water and add the cement foam-regulating unstable performance. Plus hollow ceramic microspheres law, and hollow ceramic beads themselves strong enough, in the slurry injection wells can break, resulting slurry density rises.And in the deep mining of oil, adding high-performance hollow beads of grout has a certain fluidity in the process of injection wells, grout injection wells, it can quickly condense, and reached a considerable strength in the short term, the hardened cement pasteIt has good stability and impermeability, corrosion resistance and so on.Temperature and pressure at the bottom of the well with the depth of enhancements and improved every depth 100m, an increase of about 3 degrees Celsius temperature, pressure increase 1.0-2.0mpa. Depth of 7000 meters above the bottom hole temperature up to 200 degrees Celsius, and pressures up to 125mpa.Thus high temperature and pressure, to influence various properties of cement, oil well cement production and use of the most important issues. The strength of the cement slurry high temperature decreased significantly. Added with cenospheres slurry, not only to reduce the density and can withstand prolonged high pressure and high temperature strength, this lightweight cement outperforms other conventional light cement.

High strength hollow glass microspheres with diameter no more than 1 mm are attractive for hydrogen storage and transport. Microspheres were made by drop tower techniques with 150-250 μm diameter and 0.9-4.0 μm membrane thickness . By immersion in high pressure hydrogen for a period of time at an elevated temperature the microspheres could bu filled with hydrogen. The hydrogen pressure was equal to that of gas-filled chamber at 350℃ for 6-10 h. With the help of Fick’s first law and the ideal gas law the pressure in the microspheres could be calculated. Based on the Arrhenius expression, permeability conefficient decreased as temperature dropped. The half-life time for hydrogen retention in hollow glass microspheres was about 40-50 d at room temperature. The maximun hydrogen pressure could reach 20-25 MPa in the hollow glass microspheres with 200 μm diameter and 2 μm membrane thickness. The hydrogen mass fraction was 13% to 16%.

Titanium doped hollow glass microsphere preparation process
Sol-gel technology is metal organic or inorganic compound as precursor, uniform and hydrolysis under liquid phase polycondensation reaction, after solution, sol and gel and curing, after heat treatment and the technological process of the solid oxide or other compounds.Sol-gel technology provides a low temperature chemical new ways of cutting and control in the microstructure of the material. Tell from the principle of doping, titanium doped glass sol – gel titanium doped glass – titanium doped dry gel particles – titanium doped hollow glass microspheres in furnace pelletization process each link of uniform doping control technology properly, can realize Ti – the titanium HGM uniform doping.

Doped Ti hollow glass microspheres prepared in the furnace
Doped Ti of hollow glass microspheres pelletization process inside the furnace is in a composite of high temperature oven dry gel microsphere was prepared. Doped titanium dry gel particles from the feed zone into free fall after high temperature, in turn after absorption of heat, encapsulation, foaming, refining, cooling process, the final settlement in the collection the collection vessel.

Based on the world with innovative strength. Mine is not the first hospital started to develop hollow glass beads business, but the difference lies in the “high performance.” “There are a lot of glass beads on the market now, but its quality and performance, there are gaps.
“Our aim is the world’s leading-edge technology, the world’s leading-edge products, we use the most advanced hollow glass microsphere material pioneered a new strategic service China, again the global launch of China’s high-performance hollow glass beads products, let the world know China’s as good as the product. “Xu Chuanhua”said. In order to continue to stabilize, market, Xuchuan Hua and his research group is still on the product for further development: Continue to improve the product line, and continuously improve product quality, efforts to extend the industrial chain, because “Innovation is endless.”

This article comes from the Ma On Shan Government Portal

The pretreatment of hollow glass microspheres configured dope also added, adding an appropriate amount of dispersant, and then adding silver ammonia solution, the reaction was stirred 20min, deionized water to drink alcohol to clean the glass beads, and drying.
After Pretreatment with three silver-plated hollow glass microspheres were obtained spectrum detection, removal of a small atomic number elements and trace impurity elements.After analysis, the “three-step” Silver content obtained after pretreatment silvered hollow glass microspheres obtained the silver content is lower than after the other two pre-treatment process, the “silver ammonia solution activation method” and “colloidal palladium law “after pretreatment silver content obtained silvered hollow glass microspheres closer, respectively, 65.44% and 60.38%, have reached a high silver content, the silver content, the latter two pretreatment process better than the “three-step”, while in the “three-step” to use to hydrofluoric acid and other toxic substances .

Fill the hollow glass microballoon artificial wood for making furniture parts, accessories and sculpture to provide excellent quality assurance. In the original recipe adding different proportions of hollow glass beads, can adjust the product density.The oil absorption rate of the hollow glass microspheres is much smaller than calcium carbonate and so on ordinary packing, can make the viscosity dropped significantly. Compared with the traditional mineral additives, the hollow glass beads have better liquidity, applicable to the manufacturing area is large, thin plate, after adding the hollow glass beads material more nailing processing, changed the traditional formula of artificial wood is common after nailing cracking phenomenon.

Sinosteel Maanshan Mining Institute New Material Technology Co., Ltd. is specialized in the research and development of high-performance hollow glass microspheres, sales of integrated high-tech enterprise under Sinosteel Maanshan Institute of Mining Research Limited. 2009 new materials technology company developing high-performance hollow glass microspheres products have comprehensive on the market.

To speed up the application of glass beads in the domestic market, and help domestic enterprises to improve product performance, the mine hospital related domestic industries and enterprises to actively carry out cooperation.
Province, a paint factory is a well-known hospital with the help of the mine under the successful development of a new thermal insulation coatings, this product has been successfully applied for the high-tech patent products, effective solution to the traditional building energy-saving insulation of high production costs, easy wall seepage, flammability and other issues, and to promote new products in Anhui Province certificate, companies are thus in one fell swoop into the high-end paint market.

Product Specifications / Features

The high-performance hollow glass microspheres, a kind of ultra-light inorganic non-metallic powder with hollow “ball-bearing” shapes, have been developed into a new type of high performance lightweight material and have been widely applied in recent years. It will be the main direction for new-type compound materials in the 21st century. Its true density is 0.15-0.60 g/cm3; particle size is 5-180μm; Due to its excellent advantages of light weight, bulk density, lower thermal conductivity, higher compressive strength, improved dispersion and liquidity, and excellent chemical stability, it can be used as filler in painting, rubber, plastics, glass steel, man-made stone, putty, exploitation of oil and gas and other materials.
The high-performance hollow glass microspheres are alternatives to conventional fillers and additives such as silicas, calcium carbonate, talc, clay, etc., for many demanding applications. These low-density particles are used in a wide range of industries to reduce part weight, lower costs and enhance product properties.
The unique spherical shape of hollow glass microspheres offers a number of important benefits, including: higher filler loading, lower viscosity/improved flow and reduced shrinkage and warpage. It also helps the hollow glass microspheres blend readily into compounds and makes them adaptable to a variety of production processes including spraying, casting and molding.
The chemically stable soda-lime-borosilicate glass composition of hollow glass microspheres provides excellent water resistance to create more stable emulsions. They are also non-combustible and nonporous, so they do not absorb resin. And, their low alkalinity gives hollow glass microspheres compatibility with most resins, stable viscosity and long shelf life.

FROM:frbiz.com