RU2003106408A - PRESSED MATERIAL CONTAINING POLYURETHANE AND RUBBER ELASTOMER, METHOD FOR PRODUCING IT AND APPLICATION - Google Patents

Claims (32)

1. Pressed material containing a mixture of polyurethane elastomer and rubber. 2. The material according to claim 1, which contains from 5 to 40 wt.% Polyurethane elastomer. 3. The material according to claim 1, which contains from 95 to 60 wt.% Rubber. 4. The material according to claim 1, in which the elastomer is obtained in situ by reacting a terminal isocyanate group of the polyurethane prepolymer with a polyol. 5. The material according to claim 4, in which the polyurethane prepolymer containing terminal isocyanate groups contains aromatic groups. 6. The material according to claim 4, in which the polyol is 1,4-butanediol. 7. The material according to claim 1, in which the rubber is selected from natural rubber, synthetic rubber, secondary rubber, primary rubber and mixtures thereof. 8. The material according to claim 7, in which the rubber is reusable rubber. 9. The material according to claim 1, which also contains one or more additives selected from flame retardant agents, heat insulators, soundproofing materials, electrical insulators, pigments, waterproofing materials and mixtures thereof. 10. The material according to claim 1, which further comprises a core, which allows you to eliminate or reduce the flexibility of the material. 11. The material of claim 10, in which the core is made of plastic. 12. The material according to claim 11, in which the core is made of crushed and extruded plastic selected from polyethylene (PE), polypropylene (PP), polystyrene (PS), polyester (PET) and mixtures thereof. 13. The material according to claim 1, made in the form of a single compressed layer. 14. The material according to claim 1, made in the form of tiles of the following composition,%: Polyurethane Elastomer 20 Rubber 80 where percentages are relative to the total weight. 15. The material according to claim 1, made in the form of a silent block of the following composition,%: Polyurethane Elastomer 40 Rubber shavings (1-3 mm) 30 Rubber powder (0.6 mm) 30 in which percentages are relative to the total weight, and the numbers in parentheses indicate the grain size of the component. 16. The material according to claim 1, made in the form of a solid, composite panel of the following composition,%: Polyurethane Elastomer 30 Rubber shavings (1-3 mm) 40 Rubber fiber and fillers (0.6 mm) 20 Fabric 10 in which percentages are relative to the total weight, and the numbers in parentheses indicate the grain size of the component. 17. The material according to claim 1, made in the form of insulating tiles of the following composition,%: Rubber fiber (1-3 mm) 31 Rubber powder (0.6-1 mm) 24 Secondary Fillers (1-4 mm) 19 Secondary fabric (0.5 × 1 cm) 7 Polyurethane Elastomer 19 in which percentages are relative to the total weight, and the numbers in parentheses indicate the grain size of the component. 18. The material according to claim 1, made in the form of an insulating floor tile having a lower insulating layer and an upper layer or tile, in which the layers have the following composition,%: Insulating layer: Rubber fiber (2-5 mm) 30 Rubber trimmings (1-3 mm) 20 Secondary Fillers (1-4 mm) 12 Secondary fabric (0.5 × 1 cm) 10 Polyurethane Elastomer 28 Tiles: Rubber (pure powder, 0.6 μm) 60 Rubber (pure powder, 1 μm) 20 Polyurethane Elastomer 20 where percentages are relative to the total weight of each layer, and the numbers in parentheses indicate the grain size of the component. 19. The material according to claim 1 in the form of an insulating floor tile without a core having a lower insulating layer and an upper layer, or tile, in which the layers have the following composition [A] or [B],%:

where percentages are relative to the total weight of each layer, and the numbers in parentheses indicate the grain size of the component. 20. A method of producing a pressed material according to any one of claims 1 to 19, which includes mixing the starting materials, molding and pressing the resulting mixture. 21. The method according to claim 20, comprising a) mixing the isocyanate-terminated polyurethane prepolymer with the polyol to obtain a homogeneous mixture, b) adding rubber to the resulting homogeneous mixture of the polyurethane prepolymer with the polyol, c) introducing the mixture obtained in step (b) into a press -form for the purpose of molding by pressing, d) closing the mold and applying the required pressure for the necessary time to compress the mixture introduced into the mold, e) drying the pressed mother after pressing la at a suitable temperature for a suitable time, without removing the lid of the mold, and f) extracting from the mold the compact of polyurethane and rubber. 22. The method according to item 21, in which containing the terminal isocyanate groups of the polyurethane prepolymer contains aromatic groups. 23. The method according to item 21, in which the polyol is 1,4-butanediol. 24. The method according to item 21, in which the rubber is selected from natural rubber, synthetic rubber, secondary rubber, primary rubber and mixtures thereof. 25. The method according to paragraph 24, in which the rubber is used in the form of powder, shavings, fibers or mixtures thereof. 26. The method according A.25, in which the rubber is used in powder form with a grain size of 1 mm or less. 27. The method according A.25, in which the rubber is used in the form of chips with a grain size of from 1 to 5 mm 28. The method according A.25, in which the rubber is used in the form of fibers with a grain size of from 1 to 50 mm 29. The method according to item 21, in which the applied pressure is below 500 kg / cm ² (approximately 49 MPa). 30. The method according to item 21, in which the temperature lies in the range from 15 to 85 ° C. 31. The method according to item 21, in which the pressing time is less than 36 hours 32. The method according to item 21, in which the drying time after completion of pressing is less than 3 days.