products > coating ball / sphere
by polyurethane

Insertion of fine-dispersed glass materials with latex positions is a very available method of using fine-dispersed glass. Despite uniqueness properties and a big variety of latexes it is needed to be dedicated in modification concerning different technological processes.

There are two ways of forming the composition: at the expense of high durability of a binding agent and at the expense of polymer adhesion to a filling. Both methods are worked at the same time if the increase of durability is equal to the increase of adhesion.

Among the binding agents the strength of composition defined by strength of the binding agent. The strength of polymeric is the result of a compositions polymer's cohesion forces between macromolecules and adhesive forces that link a filling with polymer. In the issue of adhesion where the filling is placed nodes can be formed. These nodes link with each other and increase valent strength participation in a specimen's rupture. In the general case the increase of strength happens only when the work of adhesion is exceeded the work of cohesion. During the mixing each particle of a filling is covered with a polymeric film. Macromolecules of this film are orientated so that their polar groups directed to the polar groups of a filling.

Investigations showed that with respect to individual latex's polymer the strength of a film that filled with glazing polyurethane microglass sphere (MGS) increases from 0,17 to 0,56 MPa at the minor decreasing of elongation (from 1600% to 1260%). The rupture strength of a film that is filled with glazing glass beads is bigger than the strength a not glazing micro glass ball (MGB). Atomic-force microscopy is a method of analyzing the surface that helped find out the evenness of a surface.

With the help of microscopic, calculating and calorimetric methods was shown that the thickness of a film settled out of a solution is 0,025 micrometers.

Surface modification of MGB of such polyurethane film protects this film from corrosion. For example chemical stability for water increases in 3 times, for acid solution in 2 times and for alkaline solution in 2,5 times.The coverage has thickness ∼1,0 micron.

Latex films that are filled with glass spheres have deformation-strength characteristics. MGS addition increases the rupture strength of a film, but decrease its extensibility. The most optimal filling to use is 30% MSM films because specimens at higher concentration stop being elastic. Preferably to use glazing MGB as a filling because films on its base have higher strength with good elasticity. Film strength both of glazing hollow silica-alumina micro spheres and glazing MGB is equal because of the general nature of a modified polyurethane surface.

The influence of a filling on week latexes is bigger than on high-strength latexes.

Filling dispersion of the same nature doesn't have any influence on physical-mechanical indices of filled latex films.

products > coating ball / sphere
by metal

For applications where only a very thin surface layer of metal is required to achieve the required performance, we relatively could find solution

We have several techniques by which metals such as nickel, copper, gold and silver can be coated onto microspheres.

The coatings are continuous and robust the thickness of the metal coating can be varied ∼1x10-8÷1.5x10-6 microns.

This flexibility allows fine tuning of properties such as density, conductivity, and where appropriate, magnetic susceptibility. Metal coated hollow glass microspheres find as an excellent lightweight filler in electrically conductive coatings, paints and composites, electromagnetic shielding, adhesives and polymers as well as catalysts, laser fusion targets, and flow visualization agents.

The glass microball is coating by retrofit metals could be apply by different metals, such us: aluminum, copper, silver, gold, palladium, platinum and other.
Coverage has chemical purity level 99,90% ÷ 99,99%
Coverage has alkaline resistant's.

The process allows modifications to form cover timber, which gives the opportunity to design the physical and chemical properties in accordance with the required task. In image in right is shown glass microbal with the surface modified by silver (Ag).
Electro conductivity equals 1,59 x10-3 OmxCm at 0°C.
Thermal conductivity 4,19 x 102 Vt/m-1 °K-1 at 20 °C.
The diameter balls vary in the range of 5x10-6 m to 3 x 10-4 micrometers.

Represents interest filter system design, systems absorbers, including hydrogen, conductive systems, conductive compositions, medical, as well as other technical systems.