High-energy ray protection metal fiber fabric and high-energy ray equipment shielding device and clothes made of fabric

Abstract

The invention relates to a high-energy ray protection metal fiber fabric. The high-energy ray protection metal fiber fabric is formed by weaving more than one metal fiber; the density of each metal in the metal fiber is greater than or equal to 4.5 g / cm < 3 >; the metal fibers comprise alloy fibers, and the alloy fibers adopt first metal with the atomic number larger than or equal to 70 as a base material. Different from the prior art, the high-density metal material containing the metal alloy with the large atomic number is adopted for weaving the metal fiber fabric, and high-energy ray protection and shielding are carried out. The high-energy ray protection metal fiber fabric can be integrally woven, has heat dissipation, air permeability and flexibility, and can be used for preparing high-energy ray equipment shielding devices and high-energy ray biological protection metal fiber clothes.

Description

Technical Field

[0001] The present application relates to the field of nuclear industry, and in particular to a high-energy ray protection metal fiber fabric and a high-energy ray equipment shielding device and clothing prepared with the fabric. Background Art

[0002] Metals with large atomic numbers and high density are usually used as protective materials for shielding high-energy rays. Lead, a metal with large atomic number, has the advantages of low cost and easy processing. It is widely used in the field of shielding and protection against high-energy rays. Lead polymer protective clothing / ornaments, protective plates and equipment shielding are widely used in radiation medicine, nuclear research and nuclear industry sites. Currently, there are also some tungsten polymer protective clothing / ornaments, protective plates and equipment shielding made of tungsten.

[0003] Traditional radiation protective clothing processes lead, tungsten or other metals into powder, and then mixes them with low-density high-molecular rubber and plastic polymer materials and rolls them into a composite rubber with a certain density and is relatively soft. The mixing ratio of metal powder to rubber and plastic materials is generally about 60% to 40%. The mixing and compounding process of high-density heavy metal powder or particles with light rubber and plastic materials consumes extremely high energy, and it is difficult for the metal functional particles to be evenly distributed, resulting in unstable protective performance and high testing and verification costs. In order to ensure that the polymer composed of inorganic metals and high-molecular rubber and plastic has the performance of protective clothing preparation (softness, shearability

[0004] Cutting and good mechanical strength, etc.), the addition of powdered metal is greatly hindered, resulting in a low density of the composite rubber and poor protective performance. As a functional material, the increase of metal powder in the composite rubber will lead to an increase in the use mass of the non-metallic polymer carrier, which will further increase the weight of the protective product. The polymerized rubber is tight and tight, and has no air permeability or moisture permeability at all. The composite rubber composed of inorganic metals and polymer rubber and plastic materials is easily aged, cracked or brittle due to irradiation with high-energy photons, and then there are disadvantages such as metal precipitation leading to a decrease in protective performance and potential risks to occupational health. At present, there is no technology for effectively separating polymer rubber radiation protection products when they reach the end of their service life, so it cannot meet the environmental protection requirements of waste minimization in the nuclear and medical industries.

[0005] For pipeline and equipment shielding devices, early shielding devices used thinner lead sheets to be pre-shaped by lamination, and the outer layer was shaped by a rigid structure packaging colloid shell. Such rigid shielding structures have many inconveniences in on-site installation or removal operations, are time-consuming, and impose heavy radiation doses on personnel. Other flat soft lead shielding materials are limited by the product's own structure and are difficult to construct standard pipeline and equipment shapes, resulting in multiple shielding leakage locations and excessive shielding surfaces. Summary of the invention

[0006] In view of the above problems, the present application provides a high-energy ray protection metal fiber fabric. The metal fiber fabric uses large atomic number metals and high-density metal materials for high-energy ray protection and shielding. It can achieve the same shielding effect while having good air permeability and lower weight than traditional lead powder colloid composite material shielding devices.

[0007] The first aspect of the present application provides a high-energy ray protection metal fiber fabric, wherein the fabric is woven with more than one metal fiber; the density of each metal in the metal fiber is ≥4.5g / cm 3 ; The metal fiber includes alloy fiber, and the alloy fiber uses a first metal with an atomic number ≧70 as a substrate.

[0008] The applicant found in the study that polymer materials with low density and low / small atomic number contribute very little to the protection against X-rays and gamma rays, but contribute greatly to the overall weight of the protective product, causing a heavy burden on the wearer of the protective product.

[0009] Different from the prior art, the present invention uses high-density metal materials containing metal alloys with large atomic numbers to weave metal fiber fabrics for high-energy ray protection and shielding. The high-energy ray protection metal fiber fabric can be woven in one piece and has heat dissipation, air permeability and flexibility, and can be used to prepare high-energy ray equipment shielding devices and high-energy ray biological protection metal fiber clothing.

[0010] Furthermore, the metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium, copper, iron, manganese, nickel, zinc, silver, tin, antimony, molybdenum or a mixture thereof.

[0011] Furthermore, the first metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium or a mixture thereof. Furthermore, the mass percentage content of the first metal in the alloy fiber with the metal as the base material is ≥ 90%.

[0012] Furthermore, the mass percentage content of the first metal in the high-energy ray shielding metal fiber fabric is 1-90%.

[0013] Furthermore, the tensile strength of the alloy metal fiber is ≥3300N / mm 2 .

[0014] Furthermore, the high-energy ray shielding metal fiber fabric is a single-layer fabric.

[0015] Furthermore, the high-energy rays include X-rays and gamma rays.

[0016] A second aspect of the present application provides a high-energy ray equipment shielding device, wherein the shielding device is prepared using the high-energy ray protection metal fiber fabric described in the first aspect of the present application.

[0017] Different from the prior art, the present application uses high-density metal materials containing metal alloys with large atomic numbers to weave metal fiber fabrics to prepare high-energy radiation equipment shielding devices; the device has a certain flexibility and can better fit the shielded device, while having a certain ventilation and heat dissipation property and will not affect the normal heat dissipation of the device.

[0018] A third aspect of the present application provides a high-energy ray biological protection metal fiber clothing, the clothing comprising an outer layer and a shielding layer, the shielding layer being prepared using the high-energy ray protection metal fiber fabric described in the first aspect of the present application.

[0019] Different from the prior art, the present application uses high-density metal materials containing alloys of metals with large atomic numbers to weave metal fiber fabrics to prepare high-energy radiation biological protection metal fiber clothing; the weight of the clothing is reduced, it has certain ventilation and heat dissipation properties, is more comfortable to wear, can increase the working time after wearing the clothing, and improve work efficiency.

[0020] Furthermore, the outer layer is made of a textile fabric that is water-repellent, oil-repellent, easy to clean and has high wear resistance.

[0021] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the written contents of the specification, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the specific implementation methods of the present application are explained below. DETAILED DESCRIPTION

[0022] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments.

[0023] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description in conjunction with the specific embodiments listed. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0024] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0025] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0026] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0027] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0028] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0029] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0030] The first aspect of the present application provides a high-energy ray protection metal fiber fabric, wherein the high-energy ray protection metal fiber fabric is woven using more than one metal fiber; the density of each metal in the metal fiber is ≥4.5g / cm 3 ; The metal fiber includes alloy fiber, and the alloy fiber uses a first metal with an atomic number ≧70 as a substrate.

[0031] From the perspective of protection theory, the interactions between X-ray and gamma photons and matter include three types: photoelectric effect, Compton effect, and electron pair effect. Photons with lower energy have a larger photoelectric effect cross section with matter with a large atomic number; photons with energy between 1 and 4 MeV are more likely to form the Compton effect, which has nothing to do with the atomic number of the matter, but is related to the number of electrons per unit mass of the protection material; rays composed of photons with higher energy are more likely to produce electron pair effects with matter.

[0032] The applicant found in the study that polymer materials with low density and low / small atomic number contribute very little to the protection against X-rays and gamma rays. At the same time, they account for a large proportion of the overall weight of the protective product, causing a heavy burden on the wearer of the protective product, resulting in a reduction in the wearing time of the protective clothing and reduced work efficiency.

[0033] Based on the above theory and the basic principle of radiation protection that "the mass attenuation coefficient μ value does not change due to changes in the physical state of the material", the present invention abandons the traditional metal powder colloidal structure design and selects metals containing large atomic numbers and high-density metal materials to design high-energy radiation protection and shielding products. However, in further research, it was found that the processing performance of large atomic number metals is poor, and the fiber prepared by them has poor spinnability; therefore, this technical solution introduces large atomic number metals in the form of alloys through research and development experiments, and uses large atomic number metals with atomic numbers ≥ 70 as the base material to prepare spinnable alloy fibers.

[0034] The present application uses alloy fibers with atomic number ≥ 70 as the metal base material to weave metal fiber fabrics, which can effectively shield and protect against rays composed of photons of different energies; at the same time, there are certain gaps between the woven fibers, which can be ventilated and breathable, increase wearability, and effectively reduce the weight of the fabric.

[0035] Furthermore, the metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium, copper, iron, manganese, nickel, zinc, silver, tin, antimony, molybdenum or a mixture thereof.

[0036] Furthermore, the first metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium or a mixture thereof.

[0037] Furthermore, the mass percentage content of the first metal in the alloy fiber with the metal as the base material is ≥ 90%.

[0038] Furthermore, the alloy fiber is lead alloy fiber, wherein the content of lead metal is ≧80%; the remainder is antimony and tin metal.

[0039] Furthermore, the lead alloy fiber contains 88% lead, 10% tin and 2% antimony.

[0040] The melting point of lead is 327.4℃, with low strength, low hardness, low melting point, easy corrosion, poor toughness, and can be made into wire but difficult to use, so it is not suitable for making protective clothing. Adding antimony can improve the strength and hardness of the alloy, improve the low-temperature brittleness of lead, improve corrosion resistance, and adjust the melting point of lead; adding nickel can improve the plasticity and toughness of the alloy, reduce brittleness, and have a positive effect on corrosion resistance and oxidation performance.

[0041] Furthermore, the alloy fiber is a tungsten alloy fiber, wherein the content of tungsten metal is ≧80%; the remainder is nickel and molybdenum metal.

[0042] Furthermore, the tungsten content in tungsten alloy fiber is 85-99%, and a small amount of nickel metal and molybdenum metal are added to form an alloy. Adding molybdenum can improve the hardness, ultimate tensile strength, yield strength, and elongation of tungsten; adding nickel can improve the plasticity and toughness of tungsten alloy, reduce brittleness, and have a positive effect on corrosion resistance and oxidation performance. The melting point of tungsten metal is 3422℃, and the melting point of the alloy is in the range of 2622~3410℃ with the proportion of tungsten metal, which is suitable for high temperature environment.

[0043] Furthermore, the alloy fiber is a tantalum alloy fiber, wherein the tantalum metal content is 47%, the tungsten metal content is 50%, and the hafnium metal content is 3%.

[0044] Tantalum metal is a hard-to-dissolve corrosion-resistant metal with strong low-temperature plasticity and poor material stability; tungsten metal has a high melting point and good conductivity. It is also a hard-to-dissolve metal with good strength and corrosion resistance at high temperatures. Tantalum-tungsten alloy has good corrosion resistance, plasticity and toughness, and alloy strength and hardness are higher than tantalum metal. Adding hafnium to the alloy can improve the creep resistance of the alloy and further enhance the tantalum's resistance to liquid alkali metal corrosion. Tantalum alloy fiber can be used in extreme environments with strong acids and alkalis of pH ≦5 or pH ≧12.

[0045] Furthermore, the mass percentage content of the first metal in the high-energy ray shielding metal fiber fabric is 1-90%.

[0046] Furthermore, the tensile strength of the alloy fiber is ≥3300N / mm 2 In order to prevent the metal fiber fabric from being insufficiently stiff and causing the fabric structure to collapse, the tensile strength of the alloy fiber is controlled.

[0047] Furthermore, the high-energy ray shielding metal fiber fabric is a single-layer fabric.

[0048] Furthermore, the single-layer fabric is woven, including but not limited to three weave structures: plain weave, twill weave, and satin weave.

[0049] Furthermore, the single-layer fabric may also be knitted, including but not limited to plain stitch and rib stitch.

[0050] Furthermore, woven fabrics have a higher density and are more compact. Woven satin fabrics, twill fabrics, and plain fabrics are less breathable, while knitted fabrics have a higher air permeability. Knitted fabrics have better softness than woven fabrics. Woven fabrics are stiffer and have relatively poor softness. The breaking strength of woven fabrics is higher than that of knitted fabrics, and woven fabrics are less likely to break.

[0051] Furthermore, the cross section of the metal fiber is circular or elliptical, and its diameter is 0.01 to 1.8 mm.

[0052] Furthermore, the cross section of the metal fiber is irregular and has a size of 0.01 to 3 mm.

[0053] Furthermore, the high-energy rays include X-rays and gamma rays.

[0054] Furthermore, the thickness of the high-energy radiation shielding metal fiber fabric is usually 1 to 50 mm, and a larger thickness can also be customized according to shielding requirements.

[0055] The weight and specific content of the first metal and other metals in the alloy fiber, the structure and thickness of the fabric can be determined according to the environmental radiation conditions and the shielding requirements of the customer. Finally, the type of metal, the structure and thickness of the fabric can be designed according to the needs and reflected on the same piece of fabric.

[0056] A second aspect of the present application provides a high-energy ray equipment shielding device, wherein the shielding device is prepared using the high-energy ray protection metal fiber fabric described in the first aspect of the present application.

[0057] Furthermore, the shielding device is a shielding device that can be wrapped around the outside of a pipeline or equipment to shield the radiation in the pipeline or equipment from radioactive sources. The pipeline or equipment shielding device includes a first shielding member and a second shielding member, the first shielding member is sleeved on the outside of the pipeline, the second shielding member is sleeved on the outside of the first shielding member, and both the first shielding member and the second shielding member are provided with notches to facilitate the installation of the shielding members. The installation position of the second shielding member is staggered with that of the first shielding member, and the main body of the second shielding member completely wraps the notch position of the first shielding member to prevent radioactive radiation from leaking from the notch position of the first shielding member. The first shielding member and the second shielding member are prepared using the high-energy radiation protection metal fiber fabric described in the first aspect of the present application.

[0058] Furthermore, the structure of the shielding device has high requirements on the overall stiffness of the shielding material. Therefore, the cross-sectional size of the metal fiber used to prepare the shielding device is 0.1-3 mm, and the fiber fabric is preferably a fiberized metal with weaving properties.

[0059] Furthermore, a fixed metal sheet with high elasticity and strong toughness can be laid in the shielding device. The metal sheet is mainly used to increase the stiffness of the overall shielding device, avoid structural collapse, and enhance the reliability of the equipment. The metal sheet is rolled to the required thickness and then cut to the required size and shape. It can be fixed in the high-energy ray protection metal fiber fabric by laying, clamping, bonding, etc. The metals used in the metal sheet include but are not limited to copper alloys, aluminum alloys, zinc alloys, stainless steel sheets, etc.

[0060] A third aspect of the present application provides a high-energy ray biological protection metal fiber clothing, the clothing comprising an outer layer and a shielding layer, the shielding layer being prepared using the high-energy ray protection metal fiber fabric described in the first aspect of the present application.

[0061] Furthermore, the shielding layer is prepared by using more than one piece of high-energy radiation protection metal fiber fabric; in some key protection locations, multiple metal fiber fabrics can be linked together to serve as the shielding layer.

[0062] Furthermore, the outer layer and the shielding layer are fixed by dot sewing, and a fixed position can be set according to needs, and yarn is used to hook at the fixed position, thereby playing a role in fixing the relative position of the outer layer and the shielding layer.

[0063] Furthermore, the outer layer is made of a textile fabric that is water-repellent, oil-repellent, easy to clean, highly wear-resistant, and has a water absorption rate of ≥ 200%. The outer layer is made of fabric with high water absorption rate, which can play the role of sweat removal, heat and moisture conduction, and breathable heat dissipation.

[0064] Furthermore, the cross-sectional size of the metal fiber in the fabric is 0.01-0.1mm. The fiber fabric is preferably a knitted fabric. Since the knitted fabric forms a coil structure, it has better air permeability, the fiber fabric is more flexible, and the weight is relatively low, which is suitable as a clothing shielding layer. The clothing prepared by using the high-energy ray protection metal fiber fabric to prepare the shielding layer has a weight reduction of about 40% compared with the products made of the existing lead / tungsten colloid technology architecture, which solves the weight and stuffiness problems of traditional radiation clothing, improves wearing comfort, and also increases the working time after each wearing, thereby improving work efficiency.

[0065] In this embodiment, the lead alloy fiber contains 88% lead, 10% tin and 2% antimony.

[0066] In this embodiment, the tungsten alloy fiber contains 91% tungsten, 5% nickel and 4% molybdenum.

[0067] In this embodiment, the tantalum content of the tantalum alloy fiber is 47%, the tungsten content is 50%, and the hafnium content is 3%.

[0068] In this embodiment, the alloy fiber is prepared by the following method: various metal powders are mixed in proportion in a mixer according to the alloy formula, pressed by isostatic pressing equipment to form alloy bars or blocks, and then heated at an extremely high temperature of >1500°C and then kept warm for multiple rounds of rolling to form alloy wires, which are then heat treated and prepared by a wire drawing machine to prepare alloy fiber wires with a diameter of 0.01 mm or more.

[0069] Example 1: A high-energy ray biological protection metal fiber clothing

[0070] In this embodiment, the shielding layer contains 40% lead alloy fiber, 50% tungsten alloy fiber, and 10% silver fiber. The cross-section of each metal fiber is circular with a diameter of 0.05 mm. The knitting structure is a plain needle structure. The lead alloy and tungsten alloy fibers are mixed and knitted to form a shielding layer. The outer layer is made of a textile fabric that is water-repellent, oil-repellent, easy to clean, and has high wear resistance. The shielding layer is sandwiched within the outer layer, and the outer layer and the shielding layer are fixed by dot sewing. Yarn is used to connect at a fixed position to fix the relative position of the outer layer and the shielding layer. The clothing is used in radiation medical scenarios where the energy is less than 125kev collimated X-rays and the photoelectric effect is dominant.

[0071] The high-energy radiation biological protection metal fiber clothing prepared in Example 1 was tested experimentally, and the weight was reduced by about 40% compared with the traditional lead clothing while achieving the equivalent protection effect of 1.0 mmPb. The protection equivalent of the traditional medical rubber lead clothing is 1.0 mmPb, and the weight is about 9.5 kg / piece.

[0072] Embodiment 2: A high-energy ray biological protection metal fiber clothing

[0073] In this embodiment, the shielding layer contains 50% tungsten alloy fiber, 40% lead alloy fiber, and 10% copper fiber. The cross-section of the metal fiber is circular with a diameter of 0.02 mm, and the knitted tissue is a plain needle tissue. The metal fibers are mixed and knitted to weave the shielding layer. The outer layer is made of a textile fabric that is water-repellent, oil-repellent, easy to clean, and has high wear resistance. The shielding layer is sandwiched within the outer layer, and the outer layer and the shielding layer are fixed by dot sewing. High-toughness wire is used to connect at a fixed position, which plays a role in fixing the relative position of the surface layer and the shielding layer. This protective clothing is suitable for diffuse reflection environments of gamma rays with an energy greater than 0.5Mev and less than 5Mev in nuclear power plant scenarios. This scenario belongs to a Compton effect-dominated scenario.

[0074] The high-energy radiation biological protection metal fiber clothing prepared in Example 2 was tested experimentally: when the protection effect of the protection equivalent of 1.0 mmPb was achieved, the weight of the high-energy radiation biological protection metal fiber clothing prepared in Example 2 was about 4.35 kg / piece, which was more than 40% lower than that of the traditional rubber lead clothing. When the protection equivalent of the traditional conventional rubber lead clothing in nuclear power plants was 1.0 mmPb, the weight was about 9.5 kg / piece.

[0075] Embodiment 3: A high-energy ray pipeline shielding device

[0076] In this embodiment, the fibers include: 50% tungsten alloy fibers, 40% lead alloy fibers, and 10% iron fibers; the cross-section of each metal fiber is circular, with a diameter of 2 mm, and the woven structure is a plain weave. After the fibers are mixed, a single-layer high-energy radiation protection metal fiber fabric is woven by a woven method.

[0077] A high-energy ray pipeline shielding device is prepared using a single layer of high-energy ray protection metal fiber fabric. The shielding device is a radioactive source pipeline shielding device, which is wrapped around the outside of the pipeline to shield the rays in the pipeline. The device includes a first shielding member and a second shielding member. The first shielding member and the second shielding member are in the shape of a hollow sleeve, and a longitudinal notch is provided along the pipeline direction. Since the shielding member has a certain flexibility, the shielding member can be sleeved in a fixed position by opening the notch position, which is convenient for operation. The first shielding member is sleeved on the outside of the pipeline, and the second shielding member is sleeved on the outside of the first shielding member. The installation position of the second shielding member is staggered with the first shielding member, and the main body of the second shielding member fully wraps the notch position of the first shielding member to prevent radioactive rays from leaking from the notch position of the first shielding member. The device is suitable for diffuse reflection environments of gamma rays with an energy greater than 0.5Mev and less than 5Mev at the site of nuclear power plants, and for scenes where the Compton effect is dominant.

[0078] The high-energy ray pipeline shielding device prepared in Example 3 was experimentally tested. The gamma-ray shielding effect of the high-energy ray pipeline shielding device was equivalent to: 5.0~5.5mmPb, and the protection ratio was about: 34.8%~55.4%. Under the premise of achieving the same shielding effect, the weight was reduced by about 40% compared with the traditional lead powder colloid composite material shielding device.

[0079] Example 4 A high-energy ray-protective metal fiber fabric suitable for high temperatures

[0080] In this embodiment, 70% tungsten alloy fiber, 5% silver fiber, and 25% lead alloy fiber are mixed and woven into a fiber fabric. The cross section of each metal fiber is circular, with a diameter of 1 mm, and the woven structure is a plain weave. After the fibers are mixed, they are woven into single-layer high-energy radiation protection metal fiber fabrics 1-5 of different densities.

[0081] The fabric can be used for high-energy radiation protection and shielding in high-temperature environments of fourth-generation nuclear power units and equipment operating at temperatures above 550°C.

[0082] 1-5 pairs of fiber fabrics prepared in Example 4 60 CO and 137 CS and X-ray tests were carried out, and the protection ratios are shown in Table 1:

[0083] Table 1 High-energy radiation protection ratio

[0084]

[0085]

[0086] Example 5 A high-energy radiation protection metal fiber fabric suitable for strong acid and alkali environments

[0087] In this embodiment, 30% tantalum alloy fiber, 40% tungsten alloy fiber, and 30% lead alloy fiber are mixed to weave metal fiber fabric. The cross section of each metal fiber is circular, with a diameter of 0.5 mm, and the woven structure is a plain weave. After the fibers are mixed, a single layer of high-energy ray protection metal fiber fabric is woven by weaving. The fabric can be used in extreme environments of strong acid and alkali with pH ≦5 or pH ≧12.

[0088] Example 6: A high-energy ray protection metal fiber clothing

[0089] In this embodiment, a mixed woven shielding layer is made of 40% lead alloy, 50% tungsten alloy fiber, 4% copper fiber, and 6% silver mixed fiber. The cross section of each metal fiber is circular with a diameter of 0.02 mm, the knitting structure is a plain needle structure, and the shielding layer is woven by knitting. The outer layer is made of a textile fabric that is water-repellent, oil-repellent, easy to decontaminate, and has high wear resistance. The shielding layer is sandwiched within the outer layer, and the outer layer and the shielding layer are fixed by dot sewing, and yarn is used to connect at a fixed position to fix the relative position of the outer layer and the shielding layer.

[0090] Finally, it should be noted that although the above embodiments have been described in the text of the specification of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the text of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A high-energy ray protection metal fiber fabric, characterized in that: The high-energy radiation protection metal fiber fabric is woven with more than one metal fiber; the density of each metal in the metal fiber is ≥4.5g / cm 3 ; The metal fiber includes alloy fiber, and the alloy fiber uses a first metal with an atomic number ≧70 as a substrate.

2. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium, copper, iron, manganese, nickel, zinc, silver, tin, antimony, molybdenum or a mixture thereof.

3. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The first metal includes lead, tungsten, rhenium, tantalum, bismuth, hafnium or a mixture thereof.

4. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The mass percentage content of the first metal in the alloy fiber with the metal as the base material is ≥90%.

5. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The mass percentage content of the first metal in the high-energy ray protection metal fiber fabric is 1-90%.

6. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The tensile strength of the alloy metal fiber is ≥3300N / mm 2 .

7. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The high-energy ray protection metal fiber fabric is a single-layer fabric.

8. The high-energy radiation shielding metal fiber fabric according to claim 1, characterized in that: The high-energy rays include X-rays and gamma rays.

9. A high-energy radiation equipment shielding device, characterized in that: The shielding device is prepared by using the high-energy ray protection metal fiber fabric described in any one of claims 1 to 7.

10. A high-energy ray biological protection metal fiber clothing, characterized in that: The clothing comprises an outer layer and a shielding layer, and the shielding layer is prepared by using the high-energy ray protection metal fiber fabric according to any one of claims 1-8.

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