X-ray shielding structure and preparation method

Abstract

The invention discloses an X-ray shielding structure and a preparation method, and relates to the technical field of radiation protection, the X-ray shielding structure comprises a ray shielding layer and a protection layer which are sequentially and alternately stacked, and the ray shielding layer is adhered to the protection layer. The preparation method mainly comprises the following steps: preparing silicon resin sheets, spraying X-ray shielding material powder, preparing crushed particles, and preparing the ray shielding layer and the protective layer. The X-ray shielding material powder and the silicon resin are mixed to form the crushed particles, and the ray shielding layer is prepared by using the crushed particles, so that the dispersion uniformity of the X-ray shielding material powder is improved, and the X-ray shielding effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of radiation protection technology, and in particular to an X-ray shielding structure and a preparation method thereof. Background Art

[0002] Current X-ray shielding materials mainly use high atomic number metals or metal compounds such as lead, bismuth, antimony, tungsten, tantalum and rare earth elements to fill rubber and plastic materials, and use the shielding effect of metal elements on X-rays and the flexibility of polymer materials to achieve X-ray shielding function. However, due to the poor compatibility between metals and non-metallic polymers, the dispersion and distribution of metals or metal compounds in plastics and rubber materials are not good, and metals or metal compounds are prone to agglomeration, resulting in the prepared shielding material being unable to achieve a uniform shielding effect. To achieve a better shielding effect, the thickness of the material must be increased or the amount of metal or metal compound added must be increased. This leads to the disadvantages of current X-ray shielding materials being relatively heavy and expensive. In addition, some rubber or plastic materials do not have good protection performance for metal materials and there is a high risk of heavy metal pollution.

[0003] Therefore, how to provide an X-ray shielding structure and preparation method to improve the uniformity of dispersion of metals or metal compounds in plastics and rubber materials or to improve the protective effect of plastics and rubber on metals or metal compounds has become a difficult problem that needs to be solved urgently by technicians in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide an X-ray shielding structure and a preparation method to improve the X-ray shielding effect or improve the safety performance of X-ray shielding materials.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an X-ray shielding structure, comprising a ray shielding layer and a protective layer which are alternately stacked in sequence, wherein the ray shielding layer is adhered to the protective layer.

[0006] Optionally, the radiation shielding layer is prepared by mixing metal powder and silicone resin.

[0007] Optionally, the protective layer is made of polytetrafluoroethylene.

[0008] A method for preparing an X-ray shielding structure, used for manufacturing the above-mentioned X-ray shielding structure, the method for preparing the X-ray shielding structure comprising: Step 1: coating the liquid silicone resin to form a silicone resin sheet; Step 2: before the silicone resin is cured, spraying X-ray shielding powder on the silicone resin sheet; Step 3: After the silicone resin is solidified, the silicone resin sheet containing the X-ray shielding powder is crushed to obtain crushed particles; Step 4: coating the liquid polytetrafluoroethylene to obtain a polytetrafluoroethylene sheet, and spraying the crushed particles obtained in step 3 on the polytetrafluoroethylene sheet before the polytetrafluoroethylene solidifies; Step 5: solidifying the polytetrafluoroethylene sheet containing the crushed particles to obtain the X-ray shielding layer; Step 6: coating liquid polytetrafluoroethylene on the surface of the X-ray shielding layer and forming the protective layer after solidification.

[0009] Step seven: bonding multiple X-ray shielding layers coated with protective layers together in sequence.

[0010] Optionally, the X-ray shielding powder includes one or more of lead, barium, tungsten or rare earth.

[0011] Optionally, the thickness of the silicone resin sheet is 0.1-0.6 μm.

[0012] Optionally, the mass ratio of the X-ray shielding powder to the silicone resin sheet is 50% to 80%.

[0013] Optionally, the particle size of the crushed particles is 500-800 mesh.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: Silicone resin is resistant to high temperatures and is insulating. The silicone resin particles protect the X-ray shielding powder. Polytetrafluoroethylene is corrosion-resistant. Polytetrafluoroethylene wraps the silicone resin particles, further protecting the X-ray shielding powder. Through structural optimization, the safety performance of the X-ray shielding device is improved.

[0015] X-ray shielding material powder is mixed with silicone resin to form crushed particles, and the crushed particles are used to prepare a ray shielding layer, thereby improving the uniformity of dispersion of the X-ray shielding material powder and enhancing the X-ray shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 Schematic diagram of the X-ray shielding structure of the present invention.

[0018] Explanation of the accompanying symbols: 1. Radiation shielding layer; 2. Protective layer. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Example 1, as Figure 1 As shown, an X-ray shielding structure includes a ray shielding layer 1 and a protective layer 2 which are alternately stacked in sequence, and the ray shielding layer 1 is adhered to the protective layer 2.

[0021] Specifically, the radiation shielding layer 1 is prepared by mixing metal powder and silicone resin.

[0022] Specifically, the protective layer 2 is made of polytetrafluoroethylene.

[0023] Example 2, a method for preparing an X-ray shielding structure, used to manufacture the X-ray shielding structure as described in Example 1, the method for preparing the X-ray shielding structure comprising: Step 1: coating the liquid silicone resin to form a silicone resin sheet; Step 2: before the silicone resin is cured, spraying X-ray shielding powder on the silicone resin sheet; Step 3: After the silicone resin is solidified, the silicone resin sheet containing the X-ray shielding powder is crushed to obtain crushed particles; Step 4: coating the liquid polytetrafluoroethylene to obtain a polytetrafluoroethylene sheet, and spraying the crushed particles obtained in step 3 on the polytetrafluoroethylene sheet before the polytetrafluoroethylene solidifies; Step 5: solidifying the polytetrafluoroethylene sheet containing the crushed particles to obtain the X-ray shielding layer 1; Step 6: Coat liquid polytetrafluoroethylene on the surface of the X-ray shielding layer 1 and form the protective layer 2 after solidification.

[0024] Step seven: bonding multiple X-ray shielding layers 1 coated with the protective layer 2 together in sequence.

[0025] Specifically, the X-ray shielding powder includes one or more of lead, barium, tungsten or rare earth.

[0026] Specifically, the thickness of the silicone resin sheet is 0.1-0.6 μm.

[0027] Specifically, the mass ratio of the X-ray shielding powder to the silicone resin sheet is 50% to 80%.

[0028] Specifically, the particle size of the crushed particles is 500-800 mesh.

[0029] In the present invention, X-ray shielding powder is mixed with silicone resin to form crushed particles, and the crushed particles are used to prepare a ray shielding layer, thereby improving the uniformity of dispersion of the X-ray shielding powder and enhancing the X-ray shielding effect.

[0030] Silicone resin is resistant to high temperatures and is insulating. The silicone resin particles protect the X-ray shielding powder. Polytetrafluoroethylene is corrosion-resistant. Polytetrafluoroethylene wraps the silicone resin particles, further protecting the X-ray shielding powder. Through structural optimization, the safety performance of the X-ray shielding device is improved.

[0031] The X-ray shielding structure provided by the present invention is suitable for small radiation shielding equipment.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An X-ray shielding structure, characterized in that: It comprises a radiation shielding layer (1) and a protective layer (2) which are alternately stacked in sequence, wherein the radiation shielding layer (1) is adhered to the protective layer (2).

2. The X-ray shielding structure according to claim 1, wherein: The ray shielding layer (1) is prepared by mixing metal powder and silicone resin.

3. The X-ray shielding structure according to claim 1, wherein: The protective layer (2) is made of polytetrafluoroethylene.

4. A method for preparing an X-ray shielding structure, characterized in that: For manufacturing the X-ray shielding structure according to any one of claims 1 to 3, the preparation method of the X-ray shielding structure comprises: Step 1: coating the liquid silicone resin to form a silicone resin sheet; Step 2: before the silicone resin is cured, spraying X-ray shielding powder on the silicone resin sheet; Step 3: After the silicone resin is solidified, the silicone resin sheet containing the X-ray shielding powder is crushed to obtain crushed particles; Step 4: coating the liquid polytetrafluoroethylene to obtain a polytetrafluoroethylene sheet, and spraying the crushed particles obtained in step 3 on the polytetrafluoroethylene sheet before the polytetrafluoroethylene solidifies; Step 5: solidifying the polytetrafluoroethylene sheet containing the crushed particles to obtain the X-ray shielding layer (1); Step 6: coating liquid polytetrafluoroethylene on the surface of the X-ray shielding layer (1), and forming the protective layer (2) after solidification; Step seven: bonding multiple X-ray shielding layers (1) coated with protective layers (2) together in sequence.

5. The method for preparing an X-ray shielding structure according to claim 4, wherein: The X-ray shielding powder includes one or more of lead, barium, tungsten or rare earth.

6. The method for preparing an X-ray shielding structure according to claim 4, wherein: The thickness of the silicone resin sheet is 0.1-0.6 μm.

7. The method for preparing an X-ray shielding structure according to claim 4, wherein: The mass ratio of the X-ray shielding powder to the silicone resin sheet is 50% to 80%.

8. The method for preparing an X-ray shielding structure according to claim 4, wherein: The particle size of the crushed particles is 500-800 meshes.

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