Methylsilane
Methylsilane is a new chemical material that is necessary for obtaining high-quality nanocomposites of silicon carbide nanoceramic type «carbon-silicon carbide and surfaces with unique parameters of oxidative and corrosion resistance that preserve the working properties at high temperatures (up to 1900oС).
Technical characteristics:
- Chemical formula: CH3SiH3
- Physical form: gas
- Boiling temperature at 1 atm.: -57°С
- Freezing temperature at 1 atm: -156°С
- Pressure at 20°С: 1324 kPa
- Self-ignition temperature: 160°С
The target market for methylsilane is the following industries: space, aviation, nuclear and companies of MIC.
Lightweight high temperature multifunctional combined energy-saving and life-support protection systems
It is a new class of heat-insulating high-temperature multifunctional combined materials developed in GNIIChTEOS, consisting of fibrous oxide refractories protected by highly heat-resistant coatings based on filled modified silicones. Usage of CPS will allow to solve problems of multi-purpose thermal protection, reduce the weight structures, as well as many times to increase equipment productivity by reducing the cycle "heating-cooling" and reducing the duration of repairs, but also will provide energy-saving effect up to 50%.
CPS meets the world quality certificates, exceeds the indicators of known analogues in terms of a combination of thermal and operational characteristics.
General technical characteristics of CPS:
Application temperature, oС up to 1850
Volume density, kg/m3 150÷200
Coefficient of thermal conductivity, Vt/m·deg, 0,015÷0,2 (20oС÷1200оС)
Volume resistivity, Om•cm 1·1017 -1018
The sound absorption coefficient for the frequencies 125-4000Hz 0,16 – 0,55
Application:
- Automotive, aviation, and shipbuilding industries;
- Power and heat generation;
- Metallurgy, ceramic, chemical industry, construction, communications;
- Energy-saving heat and fire protection of thermal equipment;
- Multi-function environmental protection facilities, elevators, rescue rooms, ducts for transmission of information;
- Multifunctional environmental protection of transport;
- Multifunctional environmental protection of power plants, including nuclear technologies;
- High-temperature equipment with a "clean" working chamber.
- Multifunctional fire protection and life support systems;
- Technologies of aerospace vehicles, including spacecraft;
- Erosion-resistant thermal insulation of heavily heat-loaded elements of launch and propulsion systems;
- Lightweight fire and heat protection of mobile vehicles, including overcoming areas with radiation hazard.
Binder «Alumox»
«Alumox» – the effective ready-made silica-free binder for the manufacture of molds that do not interact with the poured metal at temperatures up to 2000°C.
|
Viscosity Alumox, η, cSt |
2,0 –3,0 |
|
Mass fraction of Al, %, |
5 – 6 |
|
Mass fraction of Al2O3, %, |
10,0 – 12,0 |
|
Gelation time of Alumox, min. |
not less than 30 |
|
Relative viscosity when applying 1 and 2 layers, sec |
40 – 42 |
|
Relative viscosity when applying 3-7 layers, sec |
28 –30 |
|
Shelf life in sealed container |
Not limited |
|
Static bending strength of shell samples calcined at 1250 -1350 0C, MPa |
14 – 20 |
|
Toxicity |
Not toxic |
The main field of application is metallurgy – production of ceramic shell forms for high-precision complex-profile casting (up to 2000oC) on the smelted models (blades of gas turbine engines with a directed and single-crystal structure) of products of high-alloy steels, titanium, heat-resistant alloys and refractory metals.
Boron fibers
Boron fibers today remain one of the most popular reinforced material with high mechanical characteristics working under compression and tension. The bulk of the produced fibers go to the production of prepreg tapes with epoxy resin as the matrix. Such belts can be used in aviation for the manufacture of the following parts: horizontal and vertical stabilizers, tail, spar frame, fasteners.
Boron fivers are widely used in sports equipment: fishing rods, tennis rackets, skies, clubs. However, the main purpose of boron fibers is the production of metal composite materials based on aluminum as a matrix, which are successfully used in the form of tubular struts for the frames of reusable spacecraft.
Quality indicators:
- Strength of 3200 MPa;
- Variation coefficient less than 15;
- Deformation in tension - 2,8%;
- Diameter of 140 mkm.