Dual-function glove for ray shielding and mechanical damage protection and preparation method of dual-function glove

Abstract

The invention relates to a dual-function glove for ray shielding and mechanical damage protection and a preparation method thereof.The glove comprises at least one ray shielding layer, a color developing layer and at least one mechanical protection layer are sequentially arranged on the outer side of the ray shielding layer, or at least one mechanical protection layer is directly arranged on the outer side of the ray shielding layer; the mechanical protection layer is located on the outermost side of the glove and makes contact with the outside. The ray shielding layer is made of a first rubber layer and comprises first rubber, a shielding component, a reinforcing filler, a filling agent, an active agent, an anti-aging agent, a plasticizer, a lubricating release agent, a vulcanizing agent and an accelerant. And the mechanical protection layer is made of fiber cloth or a second rubber layer, the raw materials of the second rubber layer comprise second rubber, a shielding component, reinforcing filler and the like, and the mechanical protection performance is good. According to the glove structure, the ray shielding layer and the mechanical protection layer or the ray shielding layer, the color developing layer and the mechanical protection layer are stacked, so that the dual functions of ray shielding and mechanical protection are achieved, and the safety of a user is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear radiation protection materials, and in particular to a dual-function glove for radiation shielding and mechanical damage protection and a preparation method thereof. Background Art

[0002] In nuclear industry production experiments, radiation such as X-rays, gamma rays and neutron radiation are potentially harmful to the human body. In order to ensure the scientific nature of the research and the safety of operators, all experiments must be carried out in radiation-proof glove boxes. As the main protective equipment for nuclear industry laboratory operators, the radiation protection gloves in the glove box are usually made of rubber. During use, they will be affected by complex environments such as organic solvents, strong acids and alkalis, and sharp objects. They are easily worn out and need to be replaced regularly. Once the glove box gloves are damaged, they will pose a serious threat to personnel safety, especially in high mechanical hazard operations often involved in nuclear industry production (such as cable burrs, metal tools, steel plate edges and other sharp objects). Instantaneous mechanical damage such as cutting and puncture will frequently cause the gloves to fail, seriously affecting the safety of users.

[0003] Existing protective gloves have their own strengths in radiation protection and mechanical protection, but it is difficult to take into account the requirements of both aspects. Patent CN117757168B discloses a radiation protection glove, which is prepared by adding rubber, filler and vulcanizing agent to prepare a single-layer radiation protection glove with good flexibility and chemical corrosion resistance, but it does not provide effective protection against mechanical damage. Patent CN112832032A provides a glove coated with a nitrile rubber wear-resistant coating on a fabric glove, which has wear resistance and tear resistance, but does not have radiation protection function and cannot meet the use requirements of nuclear industry glove boxes. Common mechanical protection gloves are usually fabric gloves coated with wear-resistant latex, while radiation protection glove box gloves are mostly single-layer compression molded, which only provide basic mechanical protection and lack effective anti-cutting, anti-puncture and anti-tear properties.

[0004] In addition, according to the standard of "Protective Gloves against Ionizing Radiation and Radioactive Contaminants" (GB 384522019), the current three types of mechanical protection performance level of gloves is only level 1, which is difficult to resist damage from sharp objects and cannot fully meet the high safety requirements of operators in practical applications. Therefore, it is urgent to develop a multi-layer glove box glove with dual functions of radiation shielding and mechanical protection to better ensure the safety of operators.

[0005] In view of the above problems, the present invention is proposed. Summary of the invention

[0006] The invention discloses a dual-function glove for radiation shielding and mechanical damage protection and a preparation method thereof, aiming to solve the technical problems existing in the prior art.

[0007] According to one aspect of the present invention, a dual-function glove for radiation shielding and mechanical damage protection and a preparation method thereof are provided, comprising at least one radiation shielding layer, a color developing layer and at least one mechanical protection layer are sequentially arranged on the outside of the radiation shielding layer, or at least one mechanical protection layer is adjacently arranged on the outside of the radiation shielding layer, and the mechanical protection layer is arranged on the outermost side of the glove and contacts the outside;

[0008] The radiation shielding layer is made of a first rubber layer, and its raw materials include the following components: by mass, 100 parts of the first rubber, 0-400 parts of the first shielding component, 5-25 parts of the first reinforcing filler, 5-10 parts of the first filler, 3-13 parts of the first active agent, 0.5-2 parts of the first antioxidant, 5-20 parts of the first plasticizer, 1-6 parts of the first lubricating release agent, 0.5-5 parts of the first vulcanizing agent, and 1-4 parts of the first accelerator;

[0009] The mechanical protection layer is made of fiber cloth or a second rubber layer. The raw materials of the second rubber layer include the following components: by mass, 100 parts of the second rubber, 0-400 parts of the second shielding component, 20-40 parts of the second reinforcing filler, 5-20 parts of the second filler, 3-6 parts of the second active agent, 0.5-2 parts of the second antioxidant, 5-10 parts of the second plasticizer, 1-6 parts of the second lubricating release agent, 0.5-5 parts of the second vulcanizing agent, and 1-4 parts of the second accelerator;

[0010] The radiation shielding layer, the color developing layer and the mechanical protection layer are superimposed, or the radiation shielding layer and the mechanical protection layer are superimposed, so that the gloves have both radiation shielding and mechanical damage protection functions.

[0011] As a preferred technical solution, the color developing layer is made of a third rubber layer, and its raw materials include the following components: by mass, 100 parts of a third rubber, 0-400 parts of a third shielding component, 0-25 parts of a third reinforcing filler, 0-10 parts of a third filler, 3-13 parts of a third active agent, 0.5-2 parts of a third antioxidant, 5-20 parts of a third plasticizer, 1-6 parts of a third lubricating release agent, 0.5-5 parts of a third vulcanizer, 1-4 parts of a third accelerator, and 0.01-0.1 parts of a color powder.

[0012] As a preferred technical solution, the third rubber is one or more of EPDM rubber, butyl rubber, halogenated butyl rubber, and chloroprene rubber;

[0013] The third shielding component is a lead-free shielding component, which is one or more of tungsten, tungsten oxide, tungsten pentaboride, tungsten boride, ferroferric oxide, bismuth, and bismuth trioxide;

[0014] The third reinforcing filler is white carbon black;

[0015] The third filler is one or more of talc, clay, titanium dioxide, barium sulfate, PTFE, high-density polyethylene, and ultra-high molecular weight polyethylene;

[0016] The third active agent is one or more of magnesium oxide, zinc oxide, and stearic acid;

[0017] The third antioxidant is one or more of a phenolic antioxidant and an amine antioxidant;

[0018] The third plasticizer is one or more of petroleum resin, ester plasticizer, and oil plasticizer;

[0019] The third lubricating release agent is one or more of paraffin, surfactant, fatty acid, and fatty acid salt;

[0020] The third vulcanizing agent is one or more of sulfur, peroxide, reactive phenolic resin, and active oxide;

[0021] The third accelerator is one or more of thiurams, thiazoles, sulfenamides, dithiocarbamates, guanidines, thiophosphates, and thioureas.

[0022] As a preferred technical solution, the thickness of the color development layer ranges from 0.2 to 0.4 mm.

[0023] As a preferred technical solution, the thickness ratio of the first rubber layer to the fiber cloth is 2:1-10:1; the thickness ratio of the first rubber layer to the second rubber layer is 1.3:1-10:1.

[0024] As a preferred technical solution, the thickness of the first rubber layer is in the range of 0.4-1 mm.

[0025] As a preferred technical solution, the first rubber is one or more blended composite rubbers of EPDM rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber, and chlorosulfonated polyethylene rubber; the second rubber is one or more blended composite rubbers of polyurethane rubber, EPDM rubber, chloroprene rubber, natural rubber, and nitrile rubber.

[0026] As a preferred technical solution, the first filler is one or more of talcum powder, clay, titanium dioxide, barium sulfate, and calcium carbonate; the second filler is one or more of PTFE, high-density polyethylene, ultra-high molecular polyethylene, and fiber.

[0027] As a preferred technical solution, the first vulcanizing agent is one or more of sulfur, peroxide, reactive phenolic resin, and active oxide; the second vulcanizing agent is one or more of sulfur, peroxide, diisocyanate, reactive phenolic resin, and active oxide.

[0028] As a preferred technical solution, the first shielding component and the second shielding component are both lead-free shielding components, which are one or more of tungsten, tungsten oxide, tungsten pentaboride, tungsten boride, ferroferric oxide, bismuth, and bismuth trioxide.

[0029] As a preferred technical solution, the first reinforcing filler and the second reinforcing filler are both at least one of carbon black and white carbon black.

[0030] As a preferred technical solution, the carbon black includes one or more of furnace black and channel black.

[0031] According to another aspect of the present invention, there is also provided a method for preparing the above-mentioned dual-function gloves, comprising the following steps:

[0032] According to the components of the first rubber layer, the raw rubber of the first rubber is firstly put into an internal mixer for first mastication to obtain a first masticated product;

[0033] Adding a first active agent, a first antioxidant, a first plasticizer, a first lubricating demoulding machine and a first filler to the first plasticized product for first mixing to obtain a first mixed product;

[0034] adding the first reinforcing filler and the first shielding component to the first mixed product for a second mixing to obtain a second mixed product;

[0035] The second mixed material is subjected to a thin layer grinding process using an open mill, and then pressed into a sheet to obtain a mixed rubber sheet of stage A;

[0036] Adding the mixed rubber sheet of stage A, the first vulcanizing agent and the first accelerator into the internal mixer for the third mixing to obtain the third mixed rubber;

[0037] For the third mixed rubber, a thin layer is processed into strips to obtain the mixed rubber strip of section B;

[0038] The mixed rubber strip of stage B is put into an extrusion calender for calendering to obtain a first rubber layer sheet;

[0039] According to the composition of the second rubber layer and the third rubber layer, the above steps are repeated to obtain the second rubber layer or the third rubber layer;

[0040] The first rubber layer and the second rubber layer, or the first rubber layer, the third rubber layer and the second rubber layer are laminated and placed in a glove mold, and molded and vulcanized, and demolded to obtain a dual-function glove.

[0041] As a preferred technical solution, the first mixing time is 2 minutes; the second mixing temperature is 95-110°C or 150°C-160°C; the third mixing temperature is 75°C-85°C; the molding vulcanization temperature is 160°C and the time is 15 minutes.

[0042] As a preferred technical solution, when the first rubber layer, the second rubber layer or the third rubber layer is made of chloroprene rubber, the second mixing temperature is 95-110°C; when the first rubber layer, the second rubber layer or the third rubber layer is made of non-chloroprene rubber or a blended composite rubber containing chloroprene rubber, the second mixing temperature is 150°C-160°C.

[0043] The technical solution adopted by the present invention can achieve at least one of the following beneficial effects:

[0044] 1. The present invention adopts a multi-layer glove design, and achieves the dual protection effect of radiation shielding and mechanical damage protection by setting a radiation shielding layer and a mechanical protection layer in the glove structure, or adding a color developing layer on this basis. The radiation shielding layer is made of a rubber material with good flexibility, which can effectively block radiation and provide shielding performance that meets or exceeds the GB 38452-2019 standard (0.05-0.3mmPb adjustable), ensuring the safety of operators in radiation environments.

[0045] 2. The mechanical protection layer of the present invention uses fiber cloth with excellent mechanical resistance or adds polytetrafluoroethylene (PTFE), plastic and fiber to rubber, which effectively improves the gloves' resistance to cutting, puncture and tearing. This design greatly extends the service life of the gloves and provides better mechanical protection effects at vulnerable parts (such as palms and fingertips), further ensuring the safety of operators' hands.

[0046] 3. One of the schemes of the present invention is to add a color developing layer between the radiation shielding layer and the mechanical protection layer, which is located inside the mechanical protection layer. Once the mechanical protection layer (except the fiber cloth) is damaged, the color developing layer will prompt the operator to change the gloves in time through color change, so as to avoid the gloves from being used in a damaged state and ensure personal safety. In addition, the color developing layer is made of rubber material with good adhesion (such as chloroprene rubber, butyl rubber, halogenated butyl rubber, etc.), which helps to enhance the bonding force between the layers and improve the structural stability and durability of the overall gloves. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments of the present invention. In the description of the present invention, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0048] Unless expressly indicated to the contrary, the numerical parameters in this specification and the appended claims may be approximate values ​​and can be changed according to the desired properties obtained by the content of the present invention. Specifically, all numbers used in the specification and claims to express the content of the composition, reaction conditions, etc., should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression is to include a change of ±10% in some embodiments, a change of ±5% in some embodiments, a change of ±1% in some embodiments, and a change of ±0.5% in some embodiments by a specific number.

[0049] Furthermore, the word "comprising" does not exclude the presence of materials or steps not listed in the claims. Ordinal numbers such as "first", "second", "third" and Arabic numerals, letters, etc. used in the specification and claims to modify corresponding elements or steps do not themselves mean the order of the manufacturing method. The use of these ordinals is only used to make the steps clearly distinguishable.

[0050] In addition, unless the steps are specifically described or must occur in sequence, the order of the above steps is not limited to the above list, and can be changed or rearranged according to the required design. And the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0051] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a dual-function glove for radiation shielding and mechanical damage protection, which includes at least one radiation shielding layer and at least one mechanical protection layer superimposed, wherein the mechanical protection layer is arranged adjacent to the outside of the radiation shielding layer, and the mechanical protection layer is arranged on the outermost side of the glove and directly contacts the outside world, and is used to provide physical protection, that is, the mechanical protection layer is used to resist physical damage from the outside world, such as scratches, punctures and abrasions, etc., and the mechanical protection layer is also used to prevent liquid penetration; the radiation shielding layer is used for radiation protection, that is, in a radioactive or high-energy radiation working environment, it protects the wearer's hands from damage by many rays such as X-rays, gamma rays and neutron radiation. The above-mentioned radiation shielding layer and mechanical protection layer are superimposed, so that the gloves have both radiation shielding and mechanical damage protection functions.

[0053] The radiation shielding layer is made of a first rubber layer, and the raw materials of the first rubber layer include the following components: by mass, 100 parts of a first rubber, 0-400 parts of a first shielding component, 5-25 parts of a first reinforcing filler, 5-10 parts of a first filler, 3-13 parts of a first active agent, 0.5-2 parts of a first antioxidant, 5-20 parts of a first plasticizer, 1-6 parts of a first lubricating release agent, 0.5-5 parts of a first vulcanizer, and 1-4 parts of a first accelerator.

[0054] The mechanical protection layer is made of fiber cloth or a second rubber layer. Preferably, the fiber cloth is made of one or more of polyester, nylon, aramid, high-density polyethylene / glass fiber, and ultra-high molecular polyethylene / glass fiber. Preferably, the raw materials of the second rubber layer include the following components: by mass, 100 parts of the second rubber, 0-400 parts of the second shielding component, 20-40 parts of the second reinforcing filler, 5-20 parts of the second filler, 3-6 parts of the second active agent, 0.5-2 parts of the second antioxidant, 5-10 parts of the second plasticizer, 1-6 parts of the second lubricating release agent, 0.5-5 parts of the second vulcanizing agent, and 1-4 parts of the second accelerator.

[0055] A color developing layer can also be arranged between at least one radiation shielding layer and at least one mechanical protection layer, forming a multilayer structure scheme in which a color developing layer and at least one mechanical protection layer are arranged in sequence on the outside of the radiation shielding layer. The color developing layer is made of a third rubber layer, and the raw materials of the third rubber layer include the following components: 100 parts of a third rubber, 0-400 parts of a third shielding component, 0-25 parts of a third reinforcing filler, 0-10 parts of a third filler, 3-13 parts of a third active agent, 0.5-2 parts of a third antioxidant, 5-20 parts of a third plasticizer, 1-6 parts of a third lubricating release agent, 0.5-5 parts of a third vulcanizing agent, 1-4 parts of a third accelerator, and 0.01-0.1 parts of a color powder. The above-mentioned component design enables the color developing layer to also have mechanical protection and radiation protection functions, while increasing the mechanical protection and radiation protection capabilities of the overall glove structure.

[0056] Among the above raw material components, the first shielding component, the second shielding component and the third shielding component play a radiation shielding role, blocking many rays such as X-rays and gamma rays; the first reinforcing filler, the second reinforcing filler and the third reinforcing filler are used to improve the mechanical properties, so that the first rubber layer, the second rubber layer and the third rubber layer have good tear resistance and compressive strength, while improving durability and wear resistance, and using various operating environments; the combination of the first filler and the first active agent, the combination of the second filler and the second active agent, and the combination of the third filler and the third active agent respectively increase the processing stability of the first rubber layer, the second rubber layer and the third rubber layer and anti-aging ability, ensuring that it remains stable under complex conditions such as high temperature and high humidity, and is not prone to aging or failure; the first plasticizer, the second plasticizer and the third plasticizer are used to improve flexibility to maintain the softness of the gloves; the combination of the first antioxidant and the first vulcanizing agent, the combination of the second antioxidant and the second vulcanizing agent, and the combination of the third antioxidant and the third vulcanizing agent provide an effective anti-aging and vulcanization system to increase the long-term durability of the gloves; the use of the first lubricating release agent, the second lubricating release agent and the third lubricating release agent makes it easy to demold the first rubber layer, the second rubber layer and the third rubber layer during processing, thereby improving production efficiency and product surface finish.

[0057] The superimposed design of the radiation shielding layer and the mechanical protection layer, or the multi-layer structure design in which the radiation shielding layer, the color developing layer and the mechanical protection layer are superimposed in sequence, as well as the design of related components, are different from general radiation protection gloves, and provide a glove design scheme with both radiation protection and mechanical protection functions; at the same time, when the mechanical protection layer adopts the second rubber layer, it not only has the mechanical protection function, but also increases the radiation protection performance of the mechanical protection layer, greatly improving the radiation protection ability of the overall glove structure. The glove performance is higher than the requirements of GB 38452-2019 standard, the mechanical protection capability reaches above level 1, and the shielding performance is adjustable from 0.05 to 0.3 mmPb.

[0058] In some preferred embodiments, all areas of the glove arm and hand adopt the above-mentioned at least one radiation shielding layer and at least one mechanical protection layer, or at least one radiation shielding layer, at least one mechanical protection layer and a color development layer to form a multi-layer structure, or the hand area of ​​the glove adopts the above-mentioned multi-layer structure and the arm area adopts the radiation shielding layer.

[0059] In some preferred embodiments, the first rubber is one or more of the following blended composite rubbers: EPDM rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber, and chlorosulfonated polyethylene rubber.

[0060] In some preferred embodiments, the second rubber is one or more of the following blended composite rubbers: polyurethane rubber, EPDM rubber, chloroprene rubber, natural rubber, and nitrile rubber.

[0061] In some preferred embodiments, the third rubber is one or more of the following blended composite rubbers: EPDM rubber, butyl rubber, halogenated butyl rubber, and chloroprene rubber.

[0062] In some preferred embodiments, the first shielding component, the second shielding component and the third shielding component are all lead-free shielding components, which are one or more of tungsten, tungsten oxide, tungsten pentaboride, tungsten boride, ferrosoferric oxide, bismuth and bismuth trioxide.

[0063] In some preferred embodiments, the first reinforcing filler and the second reinforcing filler are both at least one of carbon black and white carbon black, and the third reinforcing filler is white carbon black. Preferably, the carbon black includes one or more of furnace carbon black and channel carbon black.

[0064] In some preferred embodiments, the first filler is one or more of talc, clay, titanium dioxide, barium sulfate, and calcium carbonate.

[0065] In some preferred embodiments, the second filler is one or more of PTFE, high-density polyethylene, ultra-high molecular polyethylene, and fiber.

[0066] In some preferred embodiments, the third filler is one or more of talc, clay, titanium dioxide, barium sulfate, PTFE, high-density polyethylene, and ultra-high molecular weight polyethylene.

[0067] In some preferred embodiments, the first active agent, the second active agent and the third active agent are all one or more of magnesium oxide, zinc oxide and stearic acid.

[0068] In some preferred embodiments, the first antioxidant, the second antioxidant and the third antioxidant are all one or more of phenolic antioxidants and amine antioxidants.

[0069] In some preferred embodiments, the first plasticizer, the second plasticizer and the third plasticizer are all one or more of petroleum resin, ester plasticizer and oil plasticizer.

[0070] In some preferred embodiments, the first lubricating mold release agent, the second lubricating mold release agent and the third lubricating mold release agent are all one or more of paraffin wax, surfactant, fatty acid and fatty acid salt.

[0071] In some preferred embodiments, the first vulcanizing agent and the third vulcanizing agent are both one or more of sulfur, peroxide, reactive phenolic resin, and active oxide.

[0072] In some preferred embodiments, the second vulcanizing agent is one or more of sulfur, peroxide, diisocyanate, reactive phenolic resin, and active oxide.

[0073] In some preferred embodiments, when the first rubber is chlorosulfonated polyethylene rubber, a blended composite rubber containing chlorosulfonated polyethylene rubber, chloroprene rubber, or a blended composite rubber containing chloroprene rubber, the first activating agent is the same as the first vulcanizing agent; when the second rubber is chloroprene rubber or a blended composite rubber containing chloroprene rubber, the second activating agent is the same as the second vulcanizing agent; when the third rubber is chloroprene rubber or a blended composite rubber containing chloroprene rubber, the third activating agent is the same as the third vulcanizing agent.

[0074] In some preferred embodiments, the first accelerator, the second accelerator and the third accelerator are all selected from one or more of thiurams, thiazoles, sulfenamides, dithiocarbamates, guanidines, thiophosphates and thioureas.

[0075] In some preferred embodiments, due to the requirement of the overall thickness of the gloves, that is, the total thickness of the gloves is about 1 mm, the thickness of each layer needs to be controlled within a certain range. Preferably, the thickness of the first rubber layer is 0.4 mm-1 mm. The thickness of the fiber cloth is 0.1 mm-0.2 mm. The thickness of the second rubber layer is 0.1 mm-0.3 mm. The thickness of the color development layer is 0.2 mm-0.4 mm.

[0076] The embodiment of the present invention also provides a method for preparing the above-mentioned dual-function gloves, comprising the following steps:

[0077] Step S1: The first rubber layer, the second rubber layer and the third rubber layer are all prepared by using the rubber preparation process. Taking the preparation of the first rubber layer as an example, the preparation process steps are explained. The preparation process of the second rubber layer and the third rubber layer is the same as that of the first rubber layer:

[0078] Step S11: putting the first raw rubber into an internal mixer for first plasticization, the first plasticization time is 1 minute;

[0079] Step S12: adding the first active agent, the first antioxidant, the first plasticizer, the first lubricating release agent, and the first filler to the first plasticized material for first mixing, wherein the first mixing time is 2 minutes;

[0080] Step S13: adding the first reinforcing filler and the first shielding component to the first mixed material for second mixing, and discharging the second mixed material when the second mixing temperature reaches 150° C.-160° C.;

[0081] Step S14: using an open mill to grind the second mixed material into a thin layer to achieve uniform mixing and material extension, and then pressing the ground material into a sheet to obtain a mixed film of stage A, and leaving it at room temperature for more than 8 hours;

[0082] Step S15: adding the mixed rubber sheet of stage A, the first vulcanizing agent and the first accelerator into the internal mixer for the third mixing, and when the temperature reaches 75° C.-85° C., discharging the third mixing rubber;

[0083] Step S16: for the third mixed rubber, thin layer processing is performed on the open mixing mill to produce a strip, so as to obtain a B-stage mixed rubber strip;

[0084] Step S17: putting the mixed rubber strip of stage B into an extrusion calender to be calendered into a sheet of fixed thickness, and then winding or cutting it after cooling to obtain a first rubber layer sheet.

[0085] Step S18: looping through steps S11 to S17 to prepare a second rubber layer or a third rubber layer.

[0086] Step S2: The above-mentioned layers of sheets are laminated and placed in a glove mold, and compression vulcanized at a temperature of 160° C. for 15 min. After demolding, the above-mentioned dual-function gloves are obtained.

[0087] In some preferred embodiments, if the mechanical protection layer of the dual-function glove is made of fiber cloth, step S0 is further included before step S1, in which a fiber cloth having a thickness that meets the requirements is prepared.

[0088] In some preferred embodiments, when the first rubber layer, the second rubber layer or the third rubber layer is made of chloroprene rubber or a blended composite rubber containing chloroprene rubber, the second mixing temperature in step S13 is 95-110°C.

[0089] In some preferred embodiments, in step S2, the dimensions of the glove mold are: length is (700-800) ± 5 mm, and cuff diameter is (150, 165, 180, 200, 285) ± 2 mm.

[0090] The thickness of the dual-function gloves prepared according to the above method includes 0.4, 0.6, 0.8, and 1.0 mm, with an error of -0.1 mm / +0.2 mm; the diameter of the glove curling is 5±0.5 mm.

[0091] Embodiment 1:

[0092] This embodiment provides a two-layer dual-function glove, the hand area adopts a two-layer structure consisting of a single-layer mechanical protection layer and a single-layer radiation shielding layer, the mechanical protection layer adopts aramid cloth with a thickness of 0.17 mm, and the radiation shielding layer adopts a first rubber layer with a thickness of 1.0 mm; the arm area adopts a single-layer first rubber layer with a thickness of 1.0 mm.

[0093] The raw materials of the first rubber layer include the following components: by mass: 100 parts of butyl rubber, 300 parts of tungsten powder, 20 parts of N110, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of C5 petroleum resin, 3 parts of paraffin, 1.2 parts of sulfur, 0.7 parts of thiuram accelerator TMTD, and 1.5 parts of thiazole accelerator MBTS.

[0094] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0095]

[0096] Embodiment 2:

[0097] This embodiment provides a three-layer dual-function glove, the hand area adopts a three-layer structure consisting of a single-layer mechanical protection layer, a single-layer color development layer and a single-layer radiation shielding layer, the mechanical protection layer adopts ultra-high molecular polyethylene cloth with a thickness of 0.1mm, the color development layer adopts a third rubber layer with a thickness of 0.4mm, and the radiation shielding layer adopts a first rubber layer with a thickness of 0.4mm; the arm area adopts a single-layer first rubber layer with a thickness of 0.8mm.

[0098] The raw materials of the first rubber layer include the following components: by mass: 100 parts of EPDM rubber, 300 parts of bismuth powder, 20 parts of N550, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant A, 5 parts of C9 petroleum resin, 5 parts of paraffin, 1.5 parts of sulfur, 1 part of thiuram accelerator DPTT, and 1.5 parts of thiazole accelerator MBT.

[0099] The raw materials of the third rubber layer include the following components: by mass, 100 parts of butyl rubber, 300 parts of bismuth powder, 20 parts of white carbon black, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant D, 10 parts of cyclohexane oil, 5 parts of paraffin, 1.5 parts of sulfur, 1 part of dithiocarbamate accelerator ZDBC, 1.5 parts of thiazole accelerator MBTS, and 0.2 parts of fluorescent yellow powder.

[0100] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0101]

[0102] Embodiment 3:

[0103] This embodiment provides a three-layer dual-function glove, the hand area adopts a three-layer structure consisting of a single-layer mechanical protection layer, a single-layer color development layer and a single-layer radiation shielding layer, the mechanical protection layer adopts the second rubber layer with a thickness of 0.3mm, the color development layer adopts the third rubber layer with a thickness of 0.3mm, and the radiation shielding layer adopts the first rubber layer with a thickness of 0.4mm; the arm area adopts a single-layer first rubber layer with a thickness of 1mm.

[0104] The raw materials of the first rubber layer include the following components: by mass, 100 parts of butyl rubber, 110 parts of tungsten powder, 20 parts of N550, 5 parts of zinc oxide, 2 parts of stearic acid, 1681 parts of antioxidant, 5 parts of paraffin oil, 5 parts of paraffin, 1.7 parts of sulfur, 1 part of thiuram accelerator TMTD, and 1 part of thiazole accelerator MBT.

[0105] The raw materials of the second rubber layer include the following components: by mass, 100 parts of polyurethane rubber, 110 parts of tungsten powder, 30 parts of N330, 5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of PTFE, 1 part of antioxidant A, 5 parts of C5 petroleum resin, 1 part of paraffin, 2.5 parts of sulfur, 0.5 parts of thiazole accelerator MBT, and 0.5 parts of thiazole accelerator MBTS.

[0106] The raw materials of the third rubber layer include the following components: by mass, 100 parts of chloroprene rubber, 110 parts of tungsten powder, 20 parts of white carbon black, 4 parts of magnesium oxide, 2 parts of stearic acid, 1 part of antioxidant D, 15 parts of C5 petroleum resin, 1 part of paraffin, 3 parts of surfactant 935P, 5 parts of zinc oxide, and 0.1 part of red toner.

[0107] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0108]

[0109] Embodiment 4:

[0110] This embodiment provides a three-layer dual-function glove, in which the hand area and the arm area adopt a three-layer structure consisting of a single-layer mechanical protection layer, a single-layer color development layer and a single-layer radiation shielding layer. The mechanical protection layer adopts the second rubber layer with a thickness of 0.2 mm, the color development layer adopts the third rubber layer with a thickness of 0.2 mm, and the radiation shielding layer adopts the first rubber layer with a thickness of 0.4 mm.

[0111] The raw materials of the first rubber layer include the following components: by mass, 100 parts of butyl rubber, 240 parts of tungsten powder, 20 parts of N550, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 5 parts of cyclohexane oil, 5 parts of paraffin, 1.2 parts of sulfur, 1 part of thiuram accelerator DPTT, and 1.5 parts of thiazole accelerator MBT.

[0112] The raw materials of the second rubber layer include the following components: by mass, 100 parts of EPDM rubber, 260 parts of tungsten powder, 30 parts of N330, 5 parts of zinc oxide, 10 parts of high-density polyethylene, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of C9 petroleum resin, 1 part of paraffin, 1.5 parts of sulfur, 1 part of dithiocarbamate accelerator ZDC, and 0.5 part of thiazole accelerator MBT.

[0113] The raw materials of the third rubber layer include the following components: by mass, 100 parts of chlorinated butyl rubber, 250 parts of tungsten powder, 25 parts of white carbon black, 4 parts of magnesium oxide, 2 parts of stearic acid, 1 part of antioxidant D, 15 parts of C5 petroleum resin, 1 part of paraffin, 3 parts of surfactant 935P, 5 parts of zinc oxide, and 0.1 part of permanent yellow powder.

[0114] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0115]

[0116] Embodiment 5:

[0117] This embodiment provides a three-layer dual-function glove, the hand area adopts a three-layer structure consisting of a single layer of ultra-high molecular polyethylene cloth, a single layer of mechanical protection layer and a single layer of radiation shielding layer, the mechanical protection layer adopts the second rubber layer, the thickness of which is 0.4mm, the ultra-high molecular polyethylene cloth is arranged on the outermost layer, in contact with the outside world, and its thickness is 0.1mm, the radiation shielding layer adopts the first rubber layer, the thickness of which is 0.4mm; the arm area adopts the first rubber layer, the thickness of which is 0.8mm.

[0118] The raw materials of the first rubber layer include the following components: by mass: 100 parts of EPDM rubber, 300 parts of bismuth powder, 20 parts of N550, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant A, 5 parts of C9 petroleum resin, 5 parts of paraffin, 1.5 parts of sulfur, 1 part of thiuram accelerator DPTT, and 1.5 parts of thiazole accelerator MBT.

[0119] The raw materials of the second rubber layer include the following components: by mass, 100 parts of butyl rubber, 25 parts of white carbon black, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant D, 10 parts of cyclohexane oil, 5 parts of paraffin, 1.5 parts of sulfur, 1 part of dithiocarbamate accelerator ZDBC, and 1.5 parts of thiazole accelerator MBTS.

[0120] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0121]

[0122]

[0123] Embodiment 6:

[0124] This embodiment provides a three-layer dual-function glove, wherein the hand area and the arm area adopt a three-layer structure consisting of a single-layer mechanical protection layer, a single-layer radiation shielding layer and a single-layer radiation shielding layer stacked in sequence. The mechanical protection layer adopts the second rubber layer, and its thickness is 0.2 mm. The radiation shielding layer adopts the first rubber layer, and its thickness is 0.2 mm and 0.4 mm, respectively. Among them, the thickness of the radiation shielding layer located in the middle layer is 0.2 mm.

[0125] The raw materials of the first rubber layer with a thickness of 0.4 mm include the following components: 100 parts of butyl rubber, 240 parts of tungsten powder, 20 parts of N550, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 5 parts of cyclohexane oil, 5 parts of paraffin, 1.2 parts of sulfur, 1 part of thiuram accelerator DPTT, and 1.5 parts of thiazole accelerator MBT.

[0126] The raw materials of the first rubber layer (thickness 0.2 mm) located in the middle layer include the following components: 100 parts of chlorinated butyl rubber, 250 parts of tungsten powder, 25 parts of white carbon black, 4 parts of magnesium oxide, 2 parts of stearic acid, 1 part of antioxidant D, 15 parts of C5 petroleum resin, 1 part of paraffin, 3 parts of surfactant 935P, and 5 parts of zinc oxide.

[0127] The raw materials of the second rubber layer include the following components: 100 parts of EPDM rubber, 30 parts of N330, 5 parts of zinc oxide, 10 parts of high-density polyethylene, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of C9 petroleum resin, 1 part of paraffin, 1.5 parts of sulfur, 1 part of dithiocarbamate accelerator ZDC, and 0.5 part of thiazole accelerator MBT.

[0128] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0129]

[0130] Comparative Example 1:

[0131] The comparative example provides a single-layer rubber protective glove, whose raw materials include the following components: by mass, 100 parts of butyl rubber, 15 parts of N110, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of cyclohexane oil, 5 parts of paraffin, 1.2 parts of sulfur, 0.5 parts of thiuram accelerator TBzTD, and 1.8 parts of thiazole accelerator MBTS.

[0132] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0133]

[0134]

[0135] Comparative Example 2:

[0136] The present comparative example provides a single-layer rubber protective glove, whose raw materials include the following components: by mass, 100 parts of butyl rubber, 240 parts of tungsten powder, 25 parts of N110, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of cyclohexane oil, 5 parts of paraffin, 1.2 parts of sulfur, 0.5 parts of thiuram accelerator TBzTD, and 1.5 parts of thiazole accelerator MBTS.

[0137] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0138]

[0139] Comparative Example 3:

[0140] The comparative example provides a single-layer rubber protective glove, whose raw materials include the following components: by mass, 100 parts of EPDM rubber, 30 parts of N330, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 10 parts of C9 petroleum resin, 2 parts of paraffin, 1.5 parts of sulfur, 1 part of dithiocarbamate accelerator ZDC, and 0.8 parts of thiazole accelerator MBTs.

[0141] The palm of the gloves was selected to test its mechanical protection performance level, lead equivalent ( 60 Co source) and its uniformity. The test results of this embodiment are as follows:

[0142]

[0143] The embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A dual-function glove for radiation shielding and mechanical damage protection, characterized in that: The glove comprises at least one radiation shielding layer, a color developing layer and at least one mechanical protection layer are sequentially arranged on the outside of the radiation shielding layer, or at least one mechanical protection layer is adjacently arranged on the outside of the radiation shielding layer, and the mechanical protection layer is arranged on the outermost side of the glove and contacts with the outside; The radiation shielding layer is made of a first rubber layer, and its raw materials include the following components: by mass, 100 parts of the first rubber, 0-400 parts of the first shielding component, 5-25 parts of the first reinforcing filler, 5-10 parts of the first filler, 3-13 parts of the first active agent, 0.5-2 parts of the first antioxidant, 5-20 parts of the first plasticizer, 1-6 parts of the first lubricating release agent, 0.5-5 parts of the first vulcanizing agent, and 1-4 parts of the first accelerator; The mechanical protection layer is made of fiber cloth or a second rubber layer, and the raw materials of the second rubber layer include the following components: by mass, 100 parts of second rubber, 0-400 parts of second shielding component, 20-40 parts of second reinforcing filler, 5-20 parts of second filler, 3-6 parts of second active agent, 0.5-2 parts of second antioxidant, 5-10 parts of second plasticizer, 1-6 parts of second lubricating release agent, 0.5-5 parts of second vulcanizing agent, and 1-4 parts of second accelerator; The radiation shielding layer, the color developing layer and the mechanical protection layer are superimposed, or the radiation shielding layer and the mechanical protection layer are superimposed, so that the gloves have both radiation shielding and mechanical damage protection functions.

2. The dual-function glove according to claim 1, characterized in that: The color developing layer is made of a third rubber layer, and its raw materials include the following components: by mass, 100 parts of a third rubber, 0-400 parts of a third shielding component, 0-25 parts of a third reinforcing filler, 0-10 parts of a third filler, 3-13 parts of a third active agent, 0.5-2 parts of a third antioxidant, 5-20 parts of a third plasticizer, 1-6 parts of a third lubricating release agent, 0.5-5 parts of a third vulcanizing agent, 1-4 parts of a third accelerator, and 0.01-0.1 parts of a color powder.

3. The dual-function glove according to claim 2, characterized in that: The third rubber is one or more of EPDM rubber, butyl rubber, halogenated butyl rubber and chloroprene rubber; The third shielding component is a lead-free shielding component, which is one or more of tungsten, tungsten oxide, tungsten pentaboride, tungsten boride, ferroferric oxide, bismuth, and bismuth trioxide; The third reinforcing filler is white carbon black; The third filler is one or more of talcum powder, clay, titanium dioxide, barium sulfate, PTFE, high-density polyethylene, and ultra-high molecular weight polyethylene; The third active agent is one or more of magnesium oxide, zinc oxide, and stearic acid; The third antioxidant is one or more of a phenolic antioxidant and an amine antioxidant; The third plasticizer is one or more of petroleum resin, ester plasticizer, and oil plasticizer; The third lubricating release agent is one or more of paraffin, surfactant, fatty acid, and fatty acid salt; The third vulcanizing agent is one or more of sulfur, peroxide, reactive phenolic resin, and active oxide; The third accelerator is one or more of thiurams, thiazoles, sulfenamides, dithiocarbamates, guanidines, thiophosphates, and thioureas.

4. The dual-function glove according to claim 2, characterized in that: The thickness of the color development layer is in the range of 0.2-0.4 mm.

5. The dual-function glove according to claim 1, characterized in that: The thickness ratio of the first rubber layer to the fiber cloth is 2:1-10:1; the thickness ratio of the first rubber layer to the second rubber layer is 1.3:1-10:

1.

6. The dual-function glove according to claim 5, characterized in that: The thickness of the first rubber layer is in the range of 0.4-1 mm.

7. The dual-function glove according to claim 1, characterized in that: The first rubber is one or more of a blended composite rubber of EPDM rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber, and chlorosulfonated polyethylene rubber; the second rubber is one or more of a blended composite rubber of polyurethane rubber, EPDM rubber, chloroprene rubber, natural rubber, and nitrile rubber.

8. The dual-function glove according to claim 1, characterized in that: The first filler is one or more of talcum powder, clay, titanium dioxide, barium sulfate, and calcium carbonate; the second filler is one or more of PTFE, high-density polyethylene, ultra-high molecular polyethylene, and fiber.

9. The dual-function glove according to claim 1, characterized in that: The first vulcanizing agent is one or more of sulfur, peroxide, reactive phenolic resin, and active oxide; the second vulcanizing agent is one or more of sulfur, peroxide, diisocyanate, reactive phenolic resin, and active oxide.

10. The dual-function glove according to claim 1, characterized in that: The first shielding component and the second shielding component are both lead-free shielding components, which are one or more of tungsten, tungsten oxide, tungsten pentaboride, tungsten boride, ferrosoferric oxide, bismuth, and bismuth trioxide.

11. The dual-function glove according to claim 1, characterized in that: The first reinforcing filler and the second reinforcing filler are both at least one of carbon black and white carbon black.

12. The dual-function glove according to claim 11, characterized in that: The carbon black includes one or more of furnace black and channel black.

13. A method for preparing dual-function gloves for radiation shielding and mechanical damage protection, characterized in that: The steps include: According to the components of the first rubber layer, firstly, the raw rubber of the first rubber is put into an internal mixer for first mastication to obtain a first masticated product; Adding the first active agent, the first antioxidant, the first plasticizer, the first lubricating demoulding machine and the first filler to the first plasticized product for first mixing to obtain a first mixed product; adding the first reinforcing filler and the first shielding component to the first mixed product for a second mixing to obtain a second mixed product; The second mixed product is subjected to a thin-layer grinding process using an open mill, and then pressed into a sheet to obtain a mixed rubber sheet of stage A; Adding the mixed rubber sheet of stage A, the first vulcanizing agent and the first accelerator into an internal mixer for a third mixing to obtain a third mixed rubber; The third mixed rubber is processed into a thin layer to obtain a mixed rubber strip of section B; Putting the mixed rubber strip of stage B into an extrusion calender for calendering to obtain the first rubber layer sheet; According to the composition of the second rubber layer and the third rubber layer, the above steps are repeated to obtain the second rubber layer or the third rubber layer; The first rubber layer and the second rubber layer, or the first rubber layer, the third rubber layer and the second rubber layer are laminated together, placed in a glove mold, subjected to molding and vulcanization, and demolded to obtain the dual-function glove.

14. The preparation method according to claim 13, characterized in that: The first mixing time is 2 minutes; the second mixing temperature is 95-110°C or 150°C-160°C; the third mixing temperature is 75°C-85°C; the compression vulcanization temperature is 160°C and the time is 15 minutes.

15. The preparation method according to claim 14, characterized in that: When the first rubber layer, the second rubber layer or the third rubber layer is made of chloroprene rubber, the second mixing temperature is 95-110°C; when the first rubber layer, the second rubber layer or the third rubber layer is made of non-chloroprene rubber or a blended composite rubber containing chloroprene rubber, the second mixing temperature is 150°C-160°C.

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