Protective fabric and protective blanket made of same

Abstract

The invention discloses a protective fabric and a protective blanket made of the protective fabric. The protective fabric may include a first thermal insulation layer, a second thermal insulation layer, and an anti-radiation material layer between the first thermal insulation layer and the second thermal insulation layer, each of the first thermal insulation layer and the second thermal insulation layer may include a first base cloth and an aluminum film, the anti-radiation material layer can comprise second base cloth, lining cloth and an anti-radiation layer between the second base cloth and the lining cloth. The periphery of the protective blanket is subjected to edge covering treatment, and portable hand pull rings, hanging points and binding points with a covering function are designed at the four corners of the protective blanket. The protection blanket is mainly used for emergency repair and rescue protection in a limited nuclear radiation scene, carries out hot spot shielding, can be quickly unfolded, and has high radiation shielding, firmness, durability, fire prevention and flame retardance.

Description

Technical Field

[0001] The invention relates to a protective fabric and a protective blanket made of the protective fabric, and more particularly to a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. Background Art

[0002] In terms of X-ray and gamma ray protection, radiation protection products have long been dominated by lead-containing materials. The lead element has a weak absorption area in the energy range of 40-88keV, so more lead must be added or the material must be heavier and thicker to meet the shielding requirements. This makes the protection products heavy. In addition, it is difficult to make very thin radiation protection sheets with traditional processing technology, so the final product is very rigid. At the same time, lead-containing materials have disadvantages such as being difficult to recycle, being toxic and harmful to the human body, and polluting the environment.

[0003] In recent years, there has been an increasing number of studies on lead-free X-ray radiation protection materials. Beijing University of Chemical Technology and the Institute of Radiation Protection and Nuclear Safety Medicine of the Chinese Center for Disease Control and Prevention have cooperated to develop lead-free X-ray shielding rubber materials and protective clothing using mixed lanthanide elements and their compounds as shielding agents. Tianjin University of Technology uses polypropylene as the matrix and lead and barium-containing powders as shielding agents. After mixed granulation, they are melt-spun into X-ray-proof composite fibers and non-woven fabrics, and X-ray protective clothing is prepared using this. The performance of the material was evaluated and it was found that the three-layer non-woven fabric (930g / m 2 ) has a shielding efficiency of 9% for 0.2MeV electrons, which cannot meet the minimum lead equivalent requirement. The American RST (Radiation Shield Technologies) radiation shielding technology company advertises the use of modified polyethylene and polyvinyl chloride as shielding fabrics, and uses metal tantalum as the shielding interlayer between the two fabrics to develop radiation-proof fabrics and DEMRON full-body radiation protective clothing, which can effectively protect against X-rays and gamma rays. The performance evaluation of the DEMRON material found that the material's protective performance and shielding agent elements were significantly different from those reported in its publicity. The American INFAB company first applied aviation material technology to the manufacture of medical radiation protection products in 1981. Its leading products are the HX70 lightweight synthetic radiation protection material developed in 1989 and the "GREEN LITE" lead-free radiation protection material developed in recent years. Performance research found that this protective clothing is lead protective clothing, which is inconsistent with the lead-free protective clothing it advertised.

[0004] At present, radiation protection blankets are mainly based on radiation protection performance. There are no products that have both heat insulation and high temperature resistance. These products also do not clearly indicate their X-ray protection lead equivalent and the protection efficiency against X-rays and gamma rays, making it impossible to determine whether the products meet the requirements. Summary of the invention

[0005] The present invention aims to solve the problem that existing radiation protection materials are heavy and hard, and the shielding materials made therefrom have insufficient shielding efficiency and do not have other emergency rescue functions such as heat insulation and high temperature resistance.

[0006] To this end, an object of the present invention is to provide a protective fabric that can reduce the kerma rate of 130 keV gamma rays by more than 70%, while also having the functions of high strength tear resistance, resistance to radiation heat permeability, thermal stability, resistance to hydrostatic pressure, resistance to bending, wear resistance, and flame retardancy.

[0007] Another object of the present invention is to provide a protective blanket which can reduce the kerma rate of 130 keV gamma rays by more than 70%, and at the same time has the functions of high strength tear resistance, radiation heat permeability, thermal stability, hydrostatic pressure resistance, bending resistance, wear resistance, flame retardancy, etc.

[0008] To achieve the above-mentioned objectives, one aspect of the present invention provides a protective fabric, wherein the protective fabric may include a first thermal insulation layer, a second thermal insulation layer and a radiation protection material layer between the first thermal insulation layer and the second thermal insulation layer, each of the first thermal insulation layer and the second thermal insulation layer may include a first base cloth and an aluminum film, and the radiation protection material layer may include a second base cloth, a lining cloth and a radiation protection layer between the second base cloth and the lining cloth.

[0009] In an embodiment, the second base fabric may be a flame retardant base fabric, the radiation protection layer may be a radiation protection material layer, and the lining fabric may be a flame retardant lining fabric.

[0010] In an embodiment, the first base fabric may be one or more of aramid, nylon, and PE.

[0011] In an embodiment, the thickness of the aluminum film may be between 3 μm and 30 μm.

[0012] In an embodiment, a mixture including a lead-free shielding agent, a bromine-antimony flame retardant and a polymer is coated on the second base fabric, and the second base fabric coated with the mixture is laminated to a lining fabric to form a radiation protection material layer.

[0013] In an embodiment, the lead-free shielding agent may be one or more of tantalum, tungsten, tin, and gadolinium.

[0014] In an embodiment, the polymer may be one or more of PU, PVC, TPU, and rubber.

[0015] In an embodiment, the thickness of the radiation protection material layer may be between 0.5 mm and 5 mm.

[0016] The protective fabric provided by the present invention can reduce the kerma rate of 130 keV gamma rays by more than 70%, and also has the functions of high strength tear resistance, radiation heat permeability resistance, thermal stability, hydrostatic pressure resistance, bending resistance, wear resistance, flame retardancy, etc. It is environmentally friendly, non-toxic and harmless, and can be widely used in the fields of military, medical and health care, public safety protection, nuclear power plants, radioactive source disposal, emergency rescue in nuclear disasters, etc., and has broad military and civilian application prospects.

[0017] Another aspect of the present invention provides a protective blanket, wherein the protective blanket may include a first thermal insulation layer, a second thermal insulation layer and a radiation protection material layer between the first thermal insulation layer and the second thermal insulation layer, each of the first thermal insulation layer and the second thermal insulation layer may include a first base cloth and an aluminum film, and the radiation protection material layer may include a second base cloth, a lining cloth and a radiation protection layer between the second base cloth and the lining cloth.

[0018] In an embodiment, the second base fabric may be a flame retardant base fabric, the radiation protection layer may be a radiation protection material layer, and the lining fabric may be a flame retardant lining fabric.

[0019] In an embodiment, the first base fabric may be one or more of aramid, nylon, and PE.

[0020] In an embodiment, the thickness of the aluminum film may be between 3 μm and 30 μm.

[0021] In an embodiment, a mixture including a lead-free shielding agent, a bromine-antimony flame retardant and a polymer is coated on the second base fabric, and the second base fabric coated with the mixture is laminated to a lining fabric to form a radiation protection material layer.

[0022] In an embodiment, the lead-free shielding agent may be one or more of tantalum, tungsten, tin, and gadolinium.

[0023] In an embodiment, the polymer may be one or more of PU, PVC, TPU, and rubber.

[0024] In an embodiment, the thickness of the radiation protection material layer may be between 0.5 mm and 5 mm.

[0025] In the embodiment, the protective blanket is surrounded by edges, and the four corners of the protective blanket are provided with hand pull rings, hanging points and binding points with covering function.

[0026] The protective blanket provided by the present invention can reduce the kerma rate of 130 keV gamma rays by more than 70%, and also has the functions of high strength tear resistance, radiation heat permeability resistance, thermal stability, hydrostatic pressure resistance, bending resistance, wear resistance, flame retardancy, etc. It is environmentally friendly, non-toxic and harmless, and can be widely used in the fields of military, medical and health care, public safety protection, nuclear power plants, radioactive source disposal, nuclear disaster emergency rescue, etc., and has broad military and civilian application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0028] Figure 1 The diagram schematically shows the structure of a protective blanket made of protective fabric according to an embodiment of the present invention.

[0029] Figure 2 To schematically illustrate Figure 1 A diagram of the material structure of the protective blanket. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with specific embodiments. These embodiments are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential changes and adjustments made by those skilled in the art based on the above-mentioned invention contents belong to the scope of protection of the present invention.

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention can be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0032] Furthermore, when describing the embodiments of the present invention, detailed descriptions of well-known features or functions will be excluded so as not to unnecessarily obscure the gist of the present invention. In the drawings, parts irrelevant to the description are omitted.

[0033] In the present invention, it will be understood that the terms “including”, “having” and other variations when used in the present invention specify the presence of stated elements but do not exclude the presence or addition of one or more other elements.

[0034] In the present invention, terms such as "first" and "second" are only used for the purpose of distinguishing one element from other elements, and do not limit the order or importance of the elements unless otherwise specifically mentioned. Therefore, within the scope of the present invention, a first element in one embodiment may be referred to as a second element in another embodiment, and similarly, a second element in one embodiment may be referred to as a first element in another embodiment.

[0035] In the present invention, the elements described in various embodiments are not necessarily essential elements, and some elements may be optional. In addition, embodiments that include other elements in addition to the elements described in various embodiments or embodiments that include other elements that replace the elements described in various embodiments are also within the scope of the present invention.

[0036] Hereinafter, a protective fabric according to an embodiment of the present invention and a protective blanket made of the protective fabric will be described in detail with reference to the accompanying drawings.

[0037] Figure 1 The diagram schematically shows the structure of a protective blanket made of protective fabric according to an embodiment of the present invention. Figure 2 To schematically illustrate Figure 1 A diagram of the material structure of the protective blanket.

[0038] like Figure 1 As shown, the protective blanket according to the embodiment of the present invention may include a main body material with edges on all sides, and the four corners of the blanket are provided with hand pull rings, hanging points and binding points with covering effect. In the embodiment of the present invention, the main body material may be made of protective fabric.

[0039] In an embodiment of the present invention, Figure 2 As shown, the protective fabric may have a three-layer structure, and the three-layer structure may be a heat insulation layer, a radiation protection material layer and a heat insulation layer in sequence, wherein the radiation protection material layer may be arranged between the two heat insulation layers. For ease of description, hereinafter, the two heat insulation layers may be referred to as a first heat insulation layer and a second heat insulation layer, respectively. That is, the protective fabric may include a first heat insulation layer, a second heat insulation layer and a radiation protection material layer between the first heat insulation layer and the second heat insulation layer. Therefore, the protective fabric thus made may have excellent heat insulation, high temperature resistance and radiation protection properties.

[0040] In an embodiment of the present invention, the protective fabric can be formed by sequentially stacking and sewing a first heat insulation layer, a radiation protection material layer, and a second heat insulation layer. Therefore, the protective fabric thus made is strong and durable. However, the combination of the first heat insulation layer, the radiation protection material layer, and the second heat insulation layer of the protective fabric according to an embodiment of the present invention is not limited thereto.

[0041] In an embodiment of the present invention, each of the first heat insulation layer and the second heat insulation layer may include a first base fabric and an aluminum film.

[0042] In an embodiment of the present invention, each of the first heat insulation layer and the second heat insulation layer may be formed by laminating an aluminum film with a first base fabric.

[0043] In a preferred embodiment of the present invention, the first base fabric may be a high-strength tear-resistant base fabric.

[0044] That is to say, each of the first heat insulation layer and the second heat insulation layer can be made of a high-strength tear-resistant base cloth composite aluminum film.

[0045] In a preferred embodiment of the present invention, the high-strength tear-resistant base fabric may be one or more of aramid, nylon, and PE.

[0046] In a preferred embodiment of the present invention, the thickness of the aluminum film may be between 3 μm and 30 μm.

[0047] For example, the thickness of the aluminum film may be 3.5 μm.

[0048] For another example, the thickness of the aluminum film may be 8 μm.

[0049] For another example, the thickness of the aluminum film may be 15 μm.

[0050] For another example, the thickness of the aluminum film may be 25 μm.

[0051] For another example, the thickness of the aluminum film may be 28 μm.

[0052] Therefore, the protective fabric having the above-mentioned first heat-insulating layer and the second heat-insulating layer can have excellent resistance to radiant heat permeability and thermal stability performance.

[0053] In an embodiment of the present invention, the radiation protection material layer may include a second base fabric, a lining fabric, and a radiation protection layer between the second base fabric and the lining fabric.

[0054] In a preferred embodiment of the present invention, the radiation protection material layer may be a high-performance flexible radiation protection material layer.

[0055] In an embodiment of the present invention, the second base fabric may be a flame-retardant base fabric, the radiation protection layer may be a radiation protection material layer, and the lining fabric may be a flame-retardant lining fabric.

[0056] In a preferred embodiment of the present invention, the second base fabric may be a high-strength flame-retardant base fabric.

[0057] That is to say, the high-performance flexible radiation-proof material layer can be composed of a high-strength flame-retardant base fabric, an intermediate radiation-proof material layer and a flame-retardant lining fabric.

[0058] In an embodiment of the present invention, a mixture of lead-free shielding agent, bromine-antimony flame retardant and polymer is coated on the second base fabric, and the second base fabric coated with the mixture is laminated to the lining fabric to form a radiation protection material layer.

[0059] The following describes the method for preparing a radiation protection material layer by taking a method for preparing a high-performance flexible radiation protection material layer as an example.

[0060] The high-performance flexible radiation-proof material layer is made by a calendering method, that is, using a high-strength flame-retardant fabric as the base fabric, dispersing a lead-free shielding agent and a bromine-antimony flame retardant in a coating polymer, scraping a certain thickness on the base fabric and then drying it, and then bonding it with a flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer.

[0061] In a preferred embodiment of the present invention, the lead-free shielding agent may be one or more of tantalum, tungsten, tin, and gadolinium.

[0062] In a preferred embodiment of the present invention, the polymer may be one or more of PU, PVC, TPU, and rubber.

[0063] In a preferred embodiment of the present invention, the thickness of the high-performance flexible radiation protection material layer may be between 0.5 mm and 5 mm.

[0064] For example, the thickness of the high performance flexible radiation protection material layer may be 1.5 mm.

[0065] For another example, the thickness of the high-performance flexible radiation protection material layer may be 2.5 mm.

[0066] For another example, the thickness of the high-performance flexible radiation protection material layer may be 3 mm.

[0067] For another example, the thickness of the high-performance flexible radiation protection material layer may be 4 mm.

[0068] For another example, the thickness of the high-performance flexible radiation protection material layer may be 4.5 mm.

[0069] Therefore, the protective fabric having the above-mentioned radiation protection material layer can have excellent radiation protection performance.

[0070] The protective fabric according to the embodiment of the present invention is mainly used for emergency repair and rescue protection in limited nuclear radiation scenarios, for hot spot shielding, and has high radiation shielding, durability and fire retardant properties.

[0071] Moreover, the protective fabric according to the embodiment of the present invention can reduce the kerma rate of 130 keV gamma rays by more than 70%, and at the same time has the functions of high strength tear resistance, resistance to radiation heat permeability, thermal stability, hydrostatic pressure resistance, bending resistance, wear resistance, flame retardancy, etc. It is environmentally friendly, non-toxic and harmless, and can be widely used in military, medical and health, public safety protection, nuclear power plants, radiation source disposal, emergency rescue in nuclear disasters and other fields, and has broad military and civilian application prospects.

[0072] In addition, the protective blanket according to the embodiment of the present invention can be made of the protective fabric according to the embodiment of the present invention. Therefore, the protective blanket made therefrom can have excellent heat insulation, high temperature resistance and radiation protection performance.

[0073] The protective blanket according to the embodiment of the present invention may further include a binding edge, a hand pull ring, a hanging point and a binding point with a covering effect. Therefore, the protective blanket according to the embodiment of the present invention can be quickly deployed and is strong and durable.

[0074] In a preferred embodiment of the present invention, the protective blanket is edged all around, and the four corners of the protective blanket are provided with hand pull rings, hanging points, and binding points with covering functions. Therefore, the protective blanket according to the embodiment of the present invention is portable and can be carried.

[0075] The protective blanket according to the embodiment of the present invention is mainly used for emergency repair and rescue protection in limited nuclear radiation scenarios, performs hot spot shielding, and can be quickly deployed, and has high radiation shielding, durability and fire retardant properties.

[0076] Moreover, the protective blanket according to the embodiment of the present invention can reduce the kerma rate of 130 keV gamma rays by more than 70%, and at the same time has the functions of high strength tear resistance, resistance to radiation heat permeability, thermal stability, hydrostatic pressure resistance, bending resistance, wear resistance, flame retardancy, etc. It is environmentally friendly, non-toxic and harmless, and can be widely used in military, medical and health, public safety protection, nuclear power plants, radioactive source disposal, nuclear disaster emergency rescue and other fields, and has broad military and civilian application prospects.

[0077] The protective blanket according to the present invention is further described below in conjunction with specific embodiments.

[0078] Embodiment 1: like Figure 1-2 As shown, the protective blanket according to the present invention is a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket has a three-layer structure, which is formed by stacking and sewing a heat-insulating layer, a high-performance flexible radiation-proof material layer and a heat-insulating layer from the outside to the inside. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket is hemmed all around, and the four corners of the heat-insulating, high-temperature-resistant emergency radiation-proof blanket are designed with portable hand pull rings, hanging points and binding points with a covering effect. The insulation layer is an aramid composite aluminum film cloth, and the thickness of the aluminum film is about 3.5μm. The high-performance flexible radiation-proof material layer is made by calendering, with high-strength flame-retardant fabric as the base fabric, and the lead-free shielding agent tantalum, tungsten, and bromine-antimony flame retardant are dispersed in the coated PVC. After a certain thickness is scraped on the base fabric, it is dried and then bonded with the flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer. The thickness of the high-performance flexible radiation-proof material layer is about 1.5mm.

[0079] Embodiment 2: like Figure 1-2 As shown, the protective blanket according to the present invention is a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket has a three-layer structure, which is formed by stacking and sewing a heat-insulating layer, a high-performance flexible radiation-proof material layer and a heat-insulating layer from the outside to the inside. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket is hemmed all around, and the four corners of the heat-insulating, high-temperature-resistant emergency radiation-proof blanket are designed with portable hand-pull rings, hanging points and binding points with a covering effect. The insulation layer is a nylon composite aluminum film cloth, and the thickness of the aluminum film is about 25μm. The high-performance flexible radiation-proof material layer is made by calendering, with high-strength flame-retardant fabric as the base fabric, and the lead-free shielding agent tin, gadolinium, and bromine antimony flame retardant are dispersed in the coating PVC and TPU mixture. After a certain thickness is scraped on the base fabric, it is dried and then bonded with the flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer. The thickness of the high-performance flexible radiation-proof material layer is about 4mm.

[0080] That is to say, the technical solution of Example 2 is basically the same as the technical solution of Example 1, with the only difference being that the thermal insulation layer is a nylon composite aluminum film cloth, the aluminum film thickness is about 25 μm, the lead-free shielding agent is tin and gadolinium, the polymer is a mixture of PVC and TPU, and the thickness of the high-performance flexible radiation protection material layer is about 4 mm.

[0081] Embodiment 3: like Figure 1-2 As shown, the protective blanket according to the present invention is a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket has a three-layer structure, which is formed by stacking and sewing a heat-insulating layer, a high-performance flexible radiation-proof material layer and a heat-insulating layer from the outside to the inside. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket is hemmed all around, and the four corners of the heat-insulating, high-temperature-resistant emergency radiation-proof blanket are designed with portable hand-pull rings, hanging points and binding points with a covering effect. The insulation layer is a PE composite aluminum film cloth, and the thickness of the aluminum film is about 15μm. The high-performance flexible radiation-proof material layer is made by calendering, with high-strength flame-retardant fabric as the base fabric, and the lead-free shielding agent tungsten, tin, gadolinium, and bromine antimony flame retardant are dispersed in the coated PU, and a certain thickness is scraped on the base fabric and then dried, and then bonded with the flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer. The thickness of the high-performance flexible radiation-proof material layer is about 3mm.

[0082] That is to say, the technical solution of Example 3 is basically the same as the technical solution of Example 1, with the only difference being that the thermal insulation layer is a PE composite aluminum film cloth, the thickness of the aluminum film is about 15 μm, the lead-free shielding agent is tungsten, tin, and gadolinium, the polymer is PU, and the thickness of the high-performance flexible radiation protection material layer is about 3 mm.

[0083] Embodiment 4: like Figure 1-2 As shown, the protective blanket according to the present invention is a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket has a three-layer structure, which is formed by stacking and sewing a heat-insulating layer, a high-performance flexible radiation-proof material layer and a heat-insulating layer from the outside to the inside. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket is hemmed all around, and the four corners of the heat-insulating, high-temperature-resistant emergency radiation-proof blanket are designed with portable hand-pull rings, hanging points and binding points with a covering effect. The insulation layer is an aramid / PE composite aluminum film cloth, and the thickness of the aluminum film is about 28μm. The high-performance flexible radiation-proof material layer is made by calendering, with high-strength flame-retardant fabric as the base fabric, and the lead-free shielding agent tungsten, tin, and bromine-antimony flame retardant are dispersed in the coating PU and PVC mixture. After a certain thickness is scraped on the base fabric, it is dried and then bonded with the flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer. The thickness of the high-performance flexible radiation-proof material layer is about 2.5mm.

[0084] That is to say, the technical solution of Example 4 is basically the same as the technical solution of Example 1, with the only difference being that the thermal insulation layer is an aramid / PE composite aluminum film cloth, the aluminum film thickness is approximately 28 μm, the lead-free shielding agent is tungsten and tin, the polymer is a mixture of PU and PVC, and the thickness of the high-performance flexible radiation protection material layer is approximately 2.5 mm.

[0085] Embodiment 5: like Figure 1-2 As shown, the protective blanket according to the present invention is a heat-insulating, high-temperature-resistant emergency radiation-proof blanket. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket has a three-layer structure, which is formed by stacking and sewing a heat-insulating layer, a high-performance flexible radiation-proof material layer and a heat-insulating layer from the outside to the inside. The heat-insulating, high-temperature-resistant emergency radiation-proof blanket is hemmed all around, and the four corners of the heat-insulating, high-temperature-resistant emergency radiation-proof blanket are designed with portable hand-pull rings, hanging points and binding points with a covering effect. The insulation layer is a nylon / PE composite aluminum film cloth, and the thickness of the aluminum film is about 8μm. The high-performance flexible radiation-proof material layer is made by calendering, with high-strength flame-retardant fabric as the base fabric, and the lead-free shielding agent tantalum, gadolinium, and bromine antimony flame retardant are dispersed in the coating rubber. After a certain thickness is scraped on the base fabric, it is dried and then bonded with the flame-retardant lining cloth to form a high-performance flexible radiation-proof material layer. The thickness of the high-performance flexible radiation-proof material layer is about 4.5mm.

[0086] That is to say, the technical solution of Example 5 is basically the same as the technical solution of Example 1, with the only difference being that the thermal insulation layer is a nylon / PE composite aluminum film cloth, the aluminum film thickness is about 8 μm, the lead-free shielding agent is tantalum and gadolinium, the polymer is rubber, and the thickness of the high-performance flexible radiation protection material layer is about 4.5 mm.

[0087] Table 1 below shows the results of testing the heat-insulating, high-temperature-resistant emergency radiation-proof blankets according to Examples 1 to 5 of the present invention in terms of radiation protection capability (kerma reduction rate of 130 keV gamma rays), radiation heat penetration resistance (time for inner surface temperature rise to reach 24°C), thermal stability (warp dimension change rate, weft dimension change rate, appearance), hydrostatic pressure resistance, bending resistance (after 2500 bends) (appearance, warp breaking strength, weft breaking strength), wear resistance, breaking strength (warp, weft), tear strength (warp, weft), peel strength, flame retardancy (warp afterflaming time, weft afterflaming time, warp damage length, weft damage length, presence or absence of melting, dripping), etc. according to GA634-2015 and GBZ / T147-2002.

[0088] Table 1 According to Table 1 above, the heat-insulating and high-temperature emergency radiation-proof blanket according to Examples 1-5 of the present invention can reduce the kerma rate of gamma rays with an energy of 130 keV by more than 70% (radiation protection capability). The performance of the outer fabric reaches the effect: the time for the inner surface temperature to rise to 24°C is ≥60s (anti-radiation heat penetration performance); after the thermal stability test (260°C), the dimensional change rate along the warp and weft directions is not more than 10%, and there is no discoloration, delamination, carbonization, melting and dripping; hydrostatic pressure resistance is ≥17kPa; after bending 2500 times, there is no delamination or shedding of the composite layer material or fiber, and the warp and weft breaking strength is ≥500N (bending resistance); wear resistance is ≥100 times; warp and weft breaking strength is ≥650N; warp and weft tearing strength is ≥100N; warp and weft peeling strength is ≥9N / 30mm; damaged length is ≤100mm, afterburning time is ≤2s, and there is no melting or dripping (flame retardant performance).

[0089] The manufacturing process technology of the heat-insulating and high-temperature resistant emergency radiation-proof blanket according to the embodiment of the present invention is mature and reliable, easy to mass produce, and can be widely used in emergency repair and rescue protection in limited nuclear radiation scenarios. The radiation-proof blanket is light and soft, and has flame retardancy, heat insulation, high temperature resistance, high strength and wear resistance and other good physical and mechanical properties. It is suitable for radiation protection in a variety of complex environments.

[0090] The above embodiments are only partial embodiments of the present invention and cannot be used to limit the protection scope of the present invention. For those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the essence and scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A protective fabric, characterized in that: The protective fabric includes a first thermal insulation layer, a second thermal insulation layer and a radiation protection material layer between the first thermal insulation layer and the second thermal insulation layer, each of the first thermal insulation layer and the second thermal insulation layer includes a first base cloth and an aluminum film, and the radiation protection material layer includes a second base cloth, a lining cloth and a radiation protection layer between the second base cloth and the lining cloth.

2. The protective fabric according to claim 1, characterized in that The second base fabric is a flame retardant base fabric, the radiation protection layer is a radiation protection material layer, and the lining fabric is a flame retardant lining fabric.

3. The protective fabric according to claim 1 or 2, characterized in that: The first base fabric is one or more of aramid, nylon and PE.

4. The protective fabric according to claim 1 or 2, characterized in that: The thickness of the aluminum film is between 3 μm and 30 μm.

5. The protective fabric according to claim 1 or 2, characterized in that: The second base fabric is coated with a mixture of a lead-free shielding agent, a bromine-antimony flame retardant and a polymer, and the second base fabric coated with the mixture is bonded to the lining fabric to form the radiation protection material layer.

6. The protective fabric according to claim 5, characterized in that The lead-free shielding agent is one or more of tantalum, tungsten, tin and gadolinium.

7. The protective fabric according to claim 5, characterized in that The polymer is one or more of PU, PVC, TPU and rubber.

8. The protective fabric according to claim 1 or 2, characterized in that: The thickness of the radiation protection material layer is between 0.5 mm and 5 mm.

9. A protective blanket made using the protective fabric according to any one of claims 1 to 8.

10. The protective blanket according to claim 9, characterized in that The protective blanket is surrounded by edges, and the four corners of the protective blanket are provided with hand pull rings, hanging points and binding points with covering function.

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