A FUNCTIONAL COMPOSITE AND A METHOD FOR PREPARING THEREOF

Abstract

A composite material that prevents the emission of the radiation and a production method thereof. The composite material which prevents the emission of the radiation mainly includes boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, zeolite, zinc borate as anti-odour and/or gas suppressor, at least one thermoset component for hardness ability or thermoplastic component for flexibility ability and preferably magnesium oxide, barium titanate and titanium dioxide.

Claims

1. A composite material for preventing the emission of the radiation comprising boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, zeolite, zinc borate as anti-odour and/or gas suppressor, at least one thermoset component for hardness ability or thermoplastic component for flexibility ability.

2. The composite material according to claim 1, further comprising magnesium oxide.

3. The composite material according to claim 1, further comprising barium titanate.

4. The composite material according to claim 1, further comprising titanium dioxide.

5. The composite material according to claim 1, comprising boric acid in an amount of 2-10% ratio by weight relative to the total weight.

6. The composite material according to claim 5, wherein a boric acid ratio is 10%.

7. The composite material according to claim 1, comprising sodium pentaborate in an amount of 6-19% ratio by weight relative to the total weight.

8. The composite material according to claim 7, wherein a sodium pentaborate ratio is 19%.

9. The composite material according to claim 2, comprising magnesium oxide in an amount of 0.2-2% ratio by weight relative to the total weight.

10. The composite material according to claim 9, wherein a magnesium oxide ratio is 2%.

11. The composite material according to claim 1, comprising tribasic lead sulphate in an amount of 0.1-1% ratio by weight relative to the total weight.

12. The composite material according to claim 11, wherein a tribasic lead sulphate ratio is 1%.

13. The composite material according to claim 1, comprising zinc borate in an amount of 0.3-9% ratio by weight relative to the total weight.

14. The composite material according to claim 13, wherein a zinc borate ratio is 9%.

15. The composite material according to claim 3, comprising barium titanate in an amount of 3-7% ratio by weight relative to the total weight.

16. The composite material according to claim 15, wherein a barium titanate ratio is 7%.

17. The composite material according to claim 4, comprising titanium dioxide in an amount of 0.7-8% ratio by weight relative to the total weight.

18. The composite material according to claim 15, wherein a titanium dioxide ratio is 8%.

19. The composite material according to claim 1, comprising zeolite in an amount of 5-18% ratio by weight relative to the total weight.

20. The composite material according to claim 19, wherein a zeolite ratio is 18%.

21. The composite material according to claim 1, comprising barium sulphate in an amount of 0.5-26% ratio by weight relative to the total weight.

22. The composite material according to claim 21, wherein a barium sulphate ratio is 26%.

23. The composite material according to claim 1, wherein the thermoplastic component is selected from a group comprising; ethylene vinyl acetate (EVA), polyamide, polyacrylic rubber, silicone rubber, nitrile rubber, fluorocarbon rubber, polyvinylchloride, polypropylene, polyethylene, or combinations thereof.

24. The composite material according to claim 1, wherein; the thermoset component is selected from a group comprising epoxy, unsaturated polyester polytetrafluoroethylene, styrene butadiene rubber, polyurethane, or combinations thereof.

25. A method for preparing a composite material that prevents the emission of the radiation according to any of the preceding claims, comprising following process steps: grinding the mixture containing boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, zeolite, and zinc borate within the grinder containers and performing dispersion by means of adding water; adding at least one thermoset component for hardness or at least one thermoplastic component for elasticity in the powder mixture and pouring the same into the moulds; pouring the mixture which is poured into the moulds and comprises thermoset component into the moulds, vacuuming the same and curing the vacuumed mixture; exposing the mixture which is poured into moulds and contains thermoplastic component to a high pressure between 10-50 tons in the press machine; extruding the compound (thermoplastic component and radiation shielding powders together and producing the panels directly.

26. The method according to claim 25, wherein dispersion is performed for 5-24 hours.

27. The method according to claim 25, characterized in exposing the mixture which is poured into moulds to pressure within moulds with 3 mm inner thickness and 20×20 dimensions at a temperature preferably between 100-200° C. for 1 hours is carried out.

28. The method according to claim 15, characterized in vacuuming the mixture poured into the moulds and containing thermoset component at a temperature between 50-55° C. is carried out.

29. The method according to claim 15, wherein the vacuumed mixture is cured between 1-5 hours.

Description

FIGURES CLARIFYING THE INVENTION

[0026] FIG. 1: Thermoset composite process flow chart

[0027] FIG. 2: Thermoplastic composite process flow chart

DESCRIPTION OF THE PART REFERENCES

[0028] 1 Grinder Container [0029] 2 Thermoset Components [0030] 3 Thermoplastic Components [0031] 4 Press Machine [0032] 5 Mould

DETAILED DESCRIPTION OF THE INVENTION

[0033] In this detailed description, the preferred embodiments of the inventive composite material that prevents emission of the radiation is described only for clarifying the subject matter in a manner such that no limiting effect is created.

[0034] Together with the invention, a composite material that prevents the emission of the radiation is developed. The inventive material mainly comprises, boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, zeolite, zinc borate as anti-odour and/or gas suppressor, at least one thermoset component (2) for hard structures or thermoplastic component (3) for flexible components.

[0035] A preferred example of the invention is given in Table 1 and the material developed for this comprises the following by weight relative to the total weight. Proposed particulate mixture will be evenly distributed in thermoplastic/thermoset polymeric resins: [0036] boric acid in a ratio of 2-10% (more preferably 10%), [0037] sodium pentaborate in a ratio of 6-19% (more preferably 19%), [0038] magnesium oxide in a ratio of 0.2-2% (more preferably 2%), [0039] tribasic lead sulphate in a ratio of 0.1-1% (more preferably 1%), [0040] zinc borate in a ratio of 0.3-9% (more preferably 9%), [0041] barium titanate in a ratio of 3-7% (more preferably 7%), [0042] titanium dioxide in a ratio of 0.7-8% (more preferably 8%), [0043] zeolite in a ratio of 5-18% (more preferably 18%) and [0044] barium sulphate in a ratio of 0.5-26 (more preferably 26%).

TABLE-US-00001 Usable amount Preferred amount Name of the component by weight by weight Boric acid  2-10% 10%  Sodium Pentaborate  6-19% 19%  Magnesium Oxide 0.2-2% 2% Tribasic Lead Sulphate 0.1-1% 1% Zinc borate 0.3-9% 9% Barium Titanate .sup. 3-7% 7% Titanium Dioxide 0.7-8% 8% Zeolite  5-18% 18%  Barium sulphate 0.5-26%  26% 

[0045] In a preferred embodiment of the invention, said thermoplastic component (3) is selected from a group comprising: ethylene vinyl acetate (EVA), polyamide, polyacrylic rubber, silicone rubber, nitrile rubber, fluorocarbon rubber, polyvinylchloride, polypropylene, polyethylene, propylene or combinations thereof. These components give flexibility and lightness to the final product.

[0046] In a preferred embodiment of the invention, said thermoset component (2) is selected from a group comprising epoxy, unsaturated polyester, polytetrafluoroethylene, styrene butadiene rubber, polyurethane, or combinations thereof. These components give hardness capability to the final product.

[0047] Together with the invention, a method for preparing a composite material that prevents the emission of the radiation is developed. The method mainly comprises the following process steps; [0048] grinding the mixture containing boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, zeolite and zinc borate within the grinder containers (1) and performing dispersion by means of adding water; [0049] preferably adding at least one thermoset component (2) or at least one thermoplastic component (3) in the powder mixture and pouring the same into the moulds; [0050] pouring the mixture which is poured into the moulds and comprises thermoset component (2) into the moulds (5), vacuuming the same at preferably a temperature between 50-55° C. and curing the vacuumed mixture preferably for 1-5 hours; or [0051] exposing the mixture which is poured into moulds and contains thermoplastic component (3) to preferably a high pressure of 10-50 tons within moulds with 3 mm inner thickness and 20×20 dimensions at a temperature preferably between 100-200° C. for 1 hours in the press machine (4), [0052] extruding the compound (thermoplastic component and radiation shielding powders together) and producing the panels directly.

[0053] Grinding the mixture containing boric acid, sodium pentaborate, barium sulphate, tribasic lead sulphate, and zeolite and zinc borate within the grinder containers (1) and performing dispersion by means of adding water; The grinding process performed here is continued until the particle size is 1 micron. Preferably dispersion is carried out for 5-24 hours by means of adding water into the powder mixture which is grinded and thus the particle size is reduced. The components contained in the mixture interact and mix with each other by means of dispersion. An unpleasant odour/gas release occurs during the formation of dispersion. The zinc borate in the dispersion eliminates this odour and suppresses the gas. Following this process, at least one component is selected from the thermoplastic components (3) for flexibility and from the thermoset components (2) for hardness and these are added into the powder mixture.

[0054] In an exemplary embodiment of the invention, the process steps for the product containing thermoset component (2) is as follows; pouring the prepared fluid formula into the moulds (5), vacuuming at a temperature between 50-55 C and removing the air bubbles in it and then leaving the same in the oven for curing. After the material is cured, two materials are welded to each other by extrusion welding, are mounted on the wall or covered on the same. The thermoset composite process flow chart is given in FIG. 1.

[0055] In an exemplary embodiment of the invention, the process steps for the product containing thermoplastic component (3) is as follows; pouring the prepared granule formula in the metallic moulds, dispersing the same in a homogenous manner and putting the same in the hot press machine (4) and exposing the same to pressing at high temperature (preferably 100-200° C.) and high pressure (preferably 10-50 tons). Then it shall be removed from the mould and left for cooling. These operations last in 1-5 hours in total. Thermoplastic composite process flow chart is given in FIG. 2.

[0056] The product samples achieved by means of the present invention are tested within the framework of IEC 61331-1:2005 standard and it is seen that the composite materials confirm the standards in terms of the radiation shielding of the obtained composite material. Details in relation with the irradiation system and standard dosimeter are given in Table 1 and the test measurements of the material are given in Table 2 and Table 3.

TABLE-US-00002 TABLE 1 X ray system YXLON MGC 41 Radiation quality 150 Kv 10 Ma, (IEC 61331-1) Standard dosimeter PTV UNIDOSE E T10008 #81049 + PTW 7861 # 008 XXX CC 400 V

TABLE-US-00003 TABLE 2 lead-free product according to the invention (1 mm thickness 10 × 10 mm 0.5 mm dimensions) Standard Lead Radiation shielding (%) 91% 94%

TABLE-US-00004 TABLE 3 lead-free product according to the invention (0.5 mm thickness 15 × 15 mm 0.25 mm dimensions) Standard Lead Radiation shielding (%) 78% 82%

[0057] The negative effects of the lead on human health are eliminated by this product with our invention. A durable, low cost product is obtained with this product. The product has an elastic structure with the thermoplastic component (3) that it contains. This provides extension of assembly and usage areas. Its application and renewal are easy due to its being light weight.