The proposed composite material, elaborated by a Bulgarian research organization is non-combustible, waterproof, sound- and thermal-insulating. The composite material consists of expanded glass granules (diameter 5 - 20 mm), glued together by self-bonding water dispersed colloid system on silicate basis. The material has thermal conductivity coefficient α = 0.050 - 0.055 W/mK, sound absorption 30 – 40 dB, bulk density from 180 to 220 kg/m3 and compressive strength 4 – 5 MPa. The composite material is produced in blocks, of which the needed element is cut out by conventional tools. It can be applied to isolate the spaces around windows and doors to ensure fire security as per the applicable regulations.
The technology for producing products of expanded glass granules is simple and cheaper than the classical expanded glass. A variety of products with different shape and function can be obtained: plates, pipes, blocks, panels, etc.
The technology consists of three stages – preparation of the raw material of glass waste, expanding of the granules in horizontal furnace or inclined rotary furnace, production of the final elements.
The team members offer technical co-operation to engineering and manufacturing companies interested in production of construction materials and commercialization. The proposed collaboration type is commercial agreement with technical assistance.
Advantages & innovations
The technology for producing the material is simple and cheap and easy to be applied.
The composite material is non-combustible, waterproof, sound- and thermal-insulating.
Stage of development
Prototype available for demonstration
Partner sought
- The institute is looking for industrial partners;
- Specific area of activity of the partner: partner sought related to the production of construction materials, components and systems;
- Task to be performed: testing of the prototype, production, marketing or adaptation to specific needs via commercial agreement with technical assistance.