Radiation-proof tungsten alloy material and its application in preparing radiation-proof appliance

Abstract

The application discloses a kind of anti-radiation tungsten alloy materials, including tungsten powder, modified bentonite cooperates with yttrium oxide regulator, modified treatment fluid, wherein tungsten powder, modified bentonite cooperates with yttrium oxide regulator and modified treatment fluid are made into according to weight ratio (28-31) :(1-3) :(13-16) Ratio.The anti-radiation tungsten alloy of the application is modified bentonite cooperates with yttrium oxide regulator with tungsten powder, bentonite has lamellar structure, can play barrier, toughness performance, to play bidirectional optimization radiation protection and impact performance, while bentonite is optimized after the method of the application, with modified treatment fluid, raw material is synergized, and the radiation protection and impact toughness of product are enhanced together, so that integrated synergistic coordination improves the performance of product, improves the performance use effect of product.

Description

Technical Field

[0001] This invention relates to the field of radiation protection technology, specifically to a radiation-resistant tungsten alloy material and its application in the manufacture of radiation-resistant devices. Background Technology

[0002] Tungsten alloys are alloys composed of tungsten as the base material and other elements. Among metals, tungsten has the highest melting point, excellent high-temperature strength and creep resistance, as well as good thermal conductivity, electrical conductivity, and electron emission properties. It also has a high specific gravity. In addition to being widely used in the manufacture of cemented carbides and as an alloying additive, tungsten and its alloys are widely used in the electronics and electric light source industries. They are also used in aerospace, casting, and weaponry sectors to make rocket nozzles, die-casting molds, armor-piercing projectile cores, contacts, heating elements, and heat shields.

[0003] While existing tungsten alloys are used as radiation shielding materials, they have poor impact toughness, making it difficult to coordinate and improve both radiation shielding and impact performance. Therefore, this invention provides further improvements and optimizations to them. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the purpose of this invention is to provide a radiation-shielding tungsten alloy material and its application in the manufacture of radiation-shielding devices, so as to solve the problems mentioned in the background art.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] This invention provides a radiation-shielding tungsten alloy material. The raw materials of the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid. The tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid are mixed in a weight ratio of (28-31):(1-3):(13-16).

[0007] Preferably, the preparation method of the modified bentonite co-regulatory yttrium oxide is as follows:

[0008] S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 5-10% of the total bentonite amount of silane coupling agent and 1-5% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution;

[0009] S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (2-5% of the total yttrium oxide) and sodium phenolsulfonate (1-5% of the total yttrium oxide), stir thoroughly to obtain yttrium oxide additive;

[0010] S03: Yttrium oxide additive is added to the product S01 at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite-coated yttrium oxide modifier.

[0011] Preferably, the hydrochloric acid solution has a mass fraction of 5-10%.

[0012] Preferably, the sodium alginate solution has a mass fraction of 10-15%.

[0013] Preferably, the modified treatment solution is prepared by:

[0014] S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 2-5% of the total amount of chitosan in phosphate buffer solution, stir evenly to obtain chitosan preparation solution;

[0015] S12: Add 2-3 parts of acetaminophen to 10-15 parts of ethanol solvent, then add 1-4 parts of chitosan preparation solution and stir well;

[0016] S13: Cerium trioxide is thermally activated at 310-320℃ for 5-10 minutes, and then cooled to room temperature;

[0017] S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

[0018] Preferably, the pH value of the phosphate buffer solution is 5.5.

[0019] Preferably, the cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:6.

[0020] Preferably, the method for preparing the radiation-shielding tungsten alloy material is as follows:

[0021] Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

[0022] Preferably, the hot pressing treatment is performed at a temperature of 1210-1240℃, for a time of 1-2 hours, and at a pressure of 10-20 MPa.

[0023] This invention also provides an application of radiation-shielding tungsten alloy material in the manufacture of radiation-shielding devices.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The radiation-shielding tungsten alloy of this invention uses modified bentonite in combination with yttrium oxide regulator and tungsten powder. Bentonite has a layered structure, which can play a role in blocking and toughening properties, thereby achieving bidirectional optimization of radiation protection and impact performance. At the same time, after the bentonite is optimized by the method of this invention, it is combined with the modification treatment liquid. The raw materials are synergistically enhanced, jointly improving the radiation protection and impact toughness of the product. Thus, the product's performance is improved in an integrated and coordinated manner, thereby improving the product's performance and use effect. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This embodiment provides a radiation-shielding tungsten alloy material. The raw materials of the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid. The tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid are mixed in a weight ratio of (28-31):(1-3):(13-16).

[0028] The preparation method of the modified bentonite-coated yttrium oxide regulator in this embodiment is as follows:

[0029] S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 5-10% of the total bentonite amount of silane coupling agent and 1-5% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution;

[0030] S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (2-5% of the total yttrium oxide) and sodium phenolsulfonate (1-5% of the total yttrium oxide), stir thoroughly to obtain yttrium oxide additive;

[0031] S03: Yttrium oxide additive is added to the product S01 at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite-coated yttrium oxide modifier.

[0032] The hydrochloric acid solution in this embodiment has a mass fraction of 5-10%.

[0033] The sodium alginate solution in this embodiment has a mass fraction of 10-15%.

[0034] The preparation method of the modified treatment liquid in this embodiment is as follows:

[0035] S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 2-5% of the total amount of chitosan in phosphate buffer solution, stir evenly to obtain chitosan preparation solution;

[0036] S12: Add 2-3 parts of acetaminophen to 10-15 parts of ethanol solvent, then add 1-4 parts of chitosan preparation solution and stir well;

[0037] S13: Cerium trioxide is thermally activated at 310-320℃ for 5-10 minutes, and then cooled to room temperature;

[0038] S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

[0039] The pH value of the phosphate buffer solution in this embodiment is 5.5.

[0040] In this embodiment, the cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:6.

[0041] The preparation method of the radiation-shielding tungsten alloy material in this embodiment is as follows:

[0042] Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

[0043] In this embodiment, the hot pressing temperature is 1210-1240℃, the processing time is 1-2 hours, and the processing pressure is 10-20 MPa.

[0044] This invention also provides an application of radiation-shielding tungsten alloy material in the manufacture of radiation-shielding devices.

[0045] Example 1.

[0046] This embodiment provides a radiation-shielding tungsten alloy material. The raw materials for the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid. The tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid are mixed in a weight ratio of 28:1:13.

[0047] The preparation method of the modified bentonite-coated yttrium oxide regulator in this embodiment is as follows:

[0048] S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 5% of the total bentonite amount of silane coupling agent and 1% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution;

[0049] S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (2% of the total yttrium oxide) and sodium phenolsulfonate (1% of the total yttrium oxide), stir thoroughly to obtain yttrium oxide additive;

[0050] S03: Yttrium oxide additive is added to the product S01 at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite-coated yttrium oxide modifier.

[0051] The hydrochloric acid solution in this embodiment has a mass fraction of 5%.

[0052] The sodium alginate solution in this embodiment has a mass fraction of 10%.

[0053] The preparation method of the modified treatment liquid in this embodiment is as follows:

[0054] S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 2% of the total amount of chitosan in phosphate buffer solution, stir evenly to obtain chitosan preparation solution;

[0055] S12: Add 2 parts of acetaminophen to 10 parts of ethanol solvent, then add 1 part of chitosan preparation solution and stir well;

[0056] S13: Cerium trioxide is thermally activated at 310℃ for 5 minutes, and then cooled to room temperature;

[0057] S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

[0058] The pH value of the phosphate buffer solution in this embodiment is 5.5.

[0059] In this embodiment, the cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:6.

[0060] The preparation method of the radiation-shielding tungsten alloy material in this embodiment is as follows:

[0061] Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

[0062] In this embodiment, the hot pressing temperature is 1210℃, the processing time is 1 hour, and the processing pressure is 10MPa.

[0063] This invention also provides an application of radiation-shielding tungsten alloy material in the manufacture of radiation-shielding devices.

[0064] Example 2.

[0065] This embodiment provides a radiation-shielding tungsten alloy material. The raw materials for the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid. The tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid are mixed in a weight ratio of 31:3:16.

[0066] The preparation method of the modified bentonite-coated yttrium oxide regulator in this embodiment is as follows:

[0067] S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 10% of the total bentonite amount of silane coupling agent and 5% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution;

[0068] S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (5% of the total yttrium oxide) and sodium phenolsulfonate (5% of the total yttrium oxide), stir thoroughly to obtain yttrium oxide additive;

[0069] S03: Yttrium oxide additive is added to the product S01 at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite-coated yttrium oxide modifier.

[0070] The hydrochloric acid solution in this embodiment has a mass fraction of 10%.

[0071] The sodium alginate solution in this embodiment has a mass fraction of 15%.

[0072] The preparation method of the modified treatment liquid in this embodiment is as follows:

[0073] S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 5% of the total amount of chitosan in phosphate buffer solution, stir evenly to obtain chitosan preparation solution;

[0074] S12: Add 3 parts of acetaminophen to 15 parts of ethanol solvent, then add 4 parts of chitosan preparation solution and stir well;

[0075] S13: Cerium trioxide is thermally activated at 320℃ for 10 min, and then cooled to room temperature;

[0076] S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

[0077] The pH value of the phosphate buffer solution in this embodiment is 5.5.

[0078] In this embodiment, the cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:6.

[0079] The preparation method of the radiation-shielding tungsten alloy material in this embodiment is as follows:

[0080] Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

[0081] In this embodiment, the hot pressing temperature is 1240℃, the processing time is 2 hours, and the processing pressure is 20MPa.

[0082] This invention also provides an application of radiation-shielding tungsten alloy material in the manufacture of radiation-shielding devices.

[0083] Example 3.

[0084] This embodiment provides a radiation-shielding tungsten alloy material. The raw materials for the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid. The tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid are mixed in a weight ratio of 29:2:14.5.

[0085] The preparation method of the modified bentonite-coated yttrium oxide regulator in this embodiment is as follows:

[0086] S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 7.5% of the total bentonite amount of silane coupling agent and 3% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution;

[0087] S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (3.5% of the total yttrium oxide) and sodium phenolsulfonate (3%), stir thoroughly to obtain yttrium oxide additive;

[0088] S03: Yttrium oxide additive is added to the product S01 at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite-coated yttrium oxide modifier.

[0089] The hydrochloric acid solution in this embodiment has a mass fraction of 7.5%.

[0090] The sodium alginate solution in this embodiment has a mass fraction of 12.5%.

[0091] The preparation method of the modified treatment liquid in this embodiment is as follows:

[0092] S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 3.5% of the total chitosan in phosphate buffer solution, stir well to obtain chitosan preparation solution;

[0093] S12: Add 2.5 parts of acetaminophen to 12.5 parts of ethanol solvent, then add 2.5 parts of chitosan preparation solution and stir until homogeneous;

[0094] S13: Cerium trioxide is thermally activated at 315℃ for 7.5 min, and then cooled to room temperature;

[0095] S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

[0096] The pH value of the phosphate buffer solution in this embodiment is 5.5.

[0097] In this embodiment, the cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:6.

[0098] The preparation method of the radiation-shielding tungsten alloy material in this embodiment is as follows:

[0099] Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

[0100] In this embodiment, the hot pressing temperature is 1230℃, the processing time is 1.5h, and the processing pressure is 15MPa.

[0101] This invention also provides an application of radiation-shielding tungsten alloy material in the manufacture of radiation-shielding devices.

[0102] Comparative Example 1.

[0103] Unlike Example 3, no modified bentonite-co-regulatory yttrium oxide was added.

[0104] Comparative Example 2.

[0105] Unlike Example 3, no yttrium oxide additive was added in the preparation of the modified bentonite co-coated yttrium oxide regulator.

[0106] Comparative Example 3.

[0107] Unlike Example 3, sodium phenolsulfonate was not added in the preparation of the yttrium oxide additive.

[0108] Comparative Example 4.

[0109] Unlike Example 3, sodium dodecyl sulfate was not added in the preparation of the bentonite-coated yttrium oxide modifier.

[0110] Comparative Example 5.

[0111] Unlike Example 3, no modified treatment solution was used.

[0112] Comparative Example 6.

[0113] Unlike Example 3, chitosan formulation was not added during the preparation of the modified solution.

[0114] The performance tests of the products in Examples 1-3 and Comparative Examples 1-6 are as follows:

[0115]

[0116] As can be seen from Examples 1-3 and Comparative Examples 1-6, the product of Example 3 of the present invention has excellent impact toughness and electromagnetic wave shielding effectiveness. The product performance is improved in a coordinated manner, and it still has excellent performance stability in alkaline environment.

[0117] As can be seen from Comparative Examples 1-4, the performance of the products deteriorated significantly without the addition of modified bentonite-coated yttrium oxide regulator. Furthermore, the performance of the products also deteriorated when yttrium oxide additives were not added during the preparation of the modified bentonite-coated yttrium oxide regulator and sodium phenolsulfonate was not added during the preparation of the yttrium oxide additive. Other methods are not as effective as the modified bentonite-coated yttrium oxide regulator prepared by the method of this invention, which significantly improves the performance of the products.

[0118] Furthermore, the product of this invention is not treated with a modified treatment solution, and no chitosan conditioning solution is added during the preparation of the modified treatment solution, resulting in a uniform deterioration trend in the product's performance. However, the modified treatment solution prepared by the method of this invention, combined with modified bentonite and yttrium oxide regulator, significantly improves the stability of the product's performance.

[0119] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0120] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A radiation-shielding tungsten alloy material, characterized in that, The raw materials for the radiation-shielding tungsten alloy material are tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid, wherein the weight ratio of tungsten powder, modified bentonite with yttrium oxide regulator, and modification treatment liquid is (28-31):(1-3):(13-16). The preparation method of modified bentonite with yttrium oxide regulator is as follows: S01: Add bentonite to hydrochloric acid solution at a weight ratio of 1:5, then add 5-10% of the total bentonite amount of silane coupling agent and 1-5% of sodium dodecyl sulfate, stir thoroughly to obtain bentonite solution; S02: Add yttrium oxide to sodium alginate solution at a weight ratio of 1:6, then add sodium carboxymethyl cellulose (2-5% of the total yttrium oxide) and sodium phenolsulfonate (1-5% of the total yttrium oxide), stir thoroughly to obtain yttrium oxide additive; S03: Yttrium oxide additive was added to the SO1 product at a weight ratio of 1:3, stirred thoroughly, washed with water, and dried to obtain modified bentonite co-formulated yttrium oxide regulator; The preparation method of the modified treatment solution is as follows: S11: Add chitosan to the deionized water at a weight ratio of 1:5, add 2-5% of the total amount of chitosan in phosphate buffer solution, stir evenly to obtain chitosan preparation solution; S12: Add 2-3 parts of acetaminophen to 10-15 parts of ethanol solvent, then add 1-4 parts of chitosan preparation solution and stir well; S13: Cerium trioxide is thermally activated at 310-320℃ for 5-10 minutes, and then cooled to room temperature; S14: Add the cerium trioxide product of S13 to S12 and stir thoroughly to obtain the modified treatment solution.

2. The radiation-shielding tungsten alloy material according to claim 1, characterized in that, The hydrochloric acid solution has a mass fraction of 5-10%.

3. The radiation-shielding tungsten alloy material according to claim 2, characterized in that, The sodium alginate solution has a mass fraction of 10-15%.

4. The radiation-shielding tungsten alloy material according to claim 3, characterized in that, The pH value of the phosphate buffer solution is 5.

5.

5. The radiation-shielding tungsten alloy material according to claim 4, characterized in that, The cerium trioxide product of S13 in S14 is added to S12 at a weight ratio of 1:

6.

6. The radiation-shielding tungsten alloy material according to claim 1, characterized in that, The preparation method of the radiation-shielding tungsten alloy material is as follows: Tungsten powder and modified bentonite with yttrium oxide regulator are stirred and mixed evenly, then added to the modification treatment solution, stirred thoroughly, washed with water, dried, and then hot-pressed. The treatment is then complete.

7. The radiation-shielding tungsten alloy material according to claim 6, characterized in that, The hot pressing treatment is performed at a temperature of 1210-1240℃, for a time of 1-2 hours, and at a pressure of 10-20 MPa.

8. The application of the radiation-shielding tungsten alloy material as described in any one of claims 1-7 in the manufacture of radiation-shielding appliances.

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