CN113462041A - Rubber product capable of preventing alpha radiation aging and preparation method thereof - Google Patents

Rubber product capable of preventing alpha radiation aging and preparation method thereof Download PDF

Info

Publication number
CN113462041A
CN113462041A CN202110817451.4A CN202110817451A CN113462041A CN 113462041 A CN113462041 A CN 113462041A CN 202110817451 A CN202110817451 A CN 202110817451A CN 113462041 A CN113462041 A CN 113462041A
Authority
CN
China
Prior art keywords
latex
rubber
alpha
alpha radiation
mass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110817451.4A
Other languages
Chinese (zh)
Inventor
罗杰民
任猛
冯鹏
徐对功
谭树刚
王曙明
熊伟
帅茂兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Materials of CAEP
Original Assignee
Institute of Materials of CAEP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Materials of CAEP filed Critical Institute of Materials of CAEP
Priority to CN202110817451.4A priority Critical patent/CN113462041A/en
Publication of CN113462041A publication Critical patent/CN113462041A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G21F1/10—Organic substances; Dispersions in organic carriers
    • G21F1/103—Dispersions in organic carriers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/12—Laminated shielding materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2258—Oxides; Hydroxides of metals of tungsten
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an alpha radiation aging-resistant rubber product which is formed by laminating and compounding a common rubber protective layer and an alpha radiation aging-resistant layer. The common rubber protective layer is formed by mixing and dipping 40-65% of rubber latex, 4-12% of batch and 30-70% of shielding filler by mass; the alpha radiation aging prevention layer is formed by mixing and dipping 35-60% of rubber latex, 3-10% of batch, 10-65% of alpha shielding filler and deionized water in parts by mass, and the total parts by mass is 100%. The invention also relates to a preparation method of the product. On the basis of shielding gamma/X rays or neutrons, the invention realizes shielding alpha rays, prolongs the service life of rubber products and hardly influences the weight and the use flexibility of gloves.

Description

Rubber product capable of preventing alpha radiation aging and preparation method thereof
Technical Field
The invention relates to the field of ray protection, in particular to the field of alpha ray protection products; in particular to a rubber product for preventing alpha radiation aging and a preparation method thereof.
Background
The radiation protection rubber product is an indispensable consumable guarantee article in nuclear technology, and compared with a structural shielding material such as glass, concrete, resin and the like, the rubber product has good plasticity, and gives operation precision and comfort on the premise of guaranteeing the safety of related personnel in a radiation environment. The substrate of the radiation protection article essentially comprises: natural Rubber (NR), nitrile rubber (NBR), Chloroprene Rubber (CR), butyl rubber (IIR), ethylene propylene diene monomer rubber (EPDM), chlorosulfonated polyethylene rubber (CSM), and the like. Can be used for preparing radiation protection gloves, headgear, protective clothing, etc.
In the research and processing process of nuclear materials, the radiation environment is generally complex, and various mixed radiation fields such as alpha, beta, gamma, X-ray, neutron and the like exist. Because gamma/X rays and neutrons have no electric charge and strong penetrating power, the gamma/X rays and neutrons are easy to directly cause damage to human bodies. Therefore, to reduce gamma/X-ray and neutron external irradiation damage to the human body, the objects shielded in the radiation protective articles are generally mainly directed to gamma/X-ray and neutron. Alpha rays are helium nuclei with high energy (about 5MeV), have large mass and strong ionization energy, but have poor penetrating power, and can block the alpha rays by one piece of paper, so that the probability of direct injury to a human body by the alpha rays is low. However, the radiation protection product can directly contact alpha rays, the energy is high, the damage effect can be directly generated on the molecular structure of the rubber, the surface (damage depth is nano-scale to micron-scale) of the rubber product is aged, the aging phenomena such as color change, microcrack and the like are generated, once microcrack occurs, the alpha rays can generate continuous aging effect on the deep part of the crack, and finally the product is aged and fails. Therefore, in order to further improve the radiation aging resistance of the rubber protective product, the protection of high-energy alpha rays needs to be considered. Currently, there is no alpha-ray proof design for commercially available rubber protective articles.
After the alpha rays with positive charges are emitted into a medium, energy is lost mainly through ionization, excitation and the like. The shielding materials usually used are mainly metallic aluminum and its compounds (aluminum salts such as aluminum oxide, aluminum nitride, aluminum boride, aluminum carbide, aluminum hydroxide, aluminum chloride/borate, etc., and meta-aluminates such as sodium meta-aluminate), polyethylene, water, liquid hydrogen, etc. The surface of the common rubber protective product is further added with an alpha radiation aging prevention layer for reducing the aging effect of alpha rays on the inner rubber.
Disclosure of Invention
The invention aims to provide a rubber product for preventing alpha radiation aging, which realizes the protection effect on alpha rays, reduces the aging effect of the alpha rays on inner-layer rubber and prolongs the service life of the rubber product on the basis of meeting the functions of common rubber protection products.
In order to achieve the above purpose, the specific technical scheme of the invention is as follows:
the alpha radiation aging preventing rubber product is formed by laminating and compounding a common rubber protective layer and an alpha radiation aging preventing layer.
As a better embodiment in the application, the thickness of a single layer of the rubber product is required to be 0.2-2 mm, wherein the thickness of the alpha radiation aging-resistant layer is required to be 0.03-0.5 mm.
In a preferred embodiment of the present invention, the general rubber protective layer is formed by dipping a general rubber protective layer latex obtained by mixing 40 to 65 mass% of rubber latex, 4 to 12 mass% of a compounding material, and 25 to 70 mass% of a shielding filler, and the total mass% is 100%.
In a preferred embodiment of the present invention, the alpha radiation aging prevention layer is formed by dipping an alpha radiation aging prevention layer latex obtained by mixing 35 to 60 mass% of rubber latex, 3 to 10 mass% of a batch, 10 to 65 mass% of an alpha shielding filler and 10 to 70 mass% of deionized water, and the total mass part is 100%.
As a preferred embodiment of the present application, the ordinary rubber protective layer (1) may contain no shielding filler, and the latex in the case of containing no shielding filler is obtained by mixing and dipping 80 to 95 mass% of rubber latex and 5 to 20 mass% of a compounding material, the total mass being 100%; (2) may contain gamma/X ray shielding filler; (3) neutron shielding fillers may be included.
As a preferred embodiment herein, the batch is composed of sulfur, zinc oxide, an accelerator, a reinforcing agent and a stabilizer. The mass percentages of the sulfur, the zinc oxide, the accelerant, the reinforcing agent and the stabilizing agent in the whole dipping emulsion are respectively 0.4-5%, 0.5-10%, 0.2-20% and 0.1-3%.
As a preferred embodiment in the present application, the reinforcing agent includes one or a mixture of several of carbon black, white carbon black, titanium dioxide, graphene and precipitated calcium carbonate.
As a preferred embodiment of the present application, the rubber latex comprises one or more of natural latex, nitrile latex, neoprene latex, butyl latex, chlorosulfonated polyethylene latex, styrene-butadiene latex, and acrylate latex.
As a preferred embodiment in the present application, the γ/X-ray shielding filler includes one or more of tungsten, cerium, tin, lanthanum, bismuth, barium, erbium, samarium, gadolinium, tantalum, ytterbium, hafnium, lead, and their oxides and other compounds. The neutron shielding filler comprises one or more of lithium fluoride, lithium bromide, lithium hydroxide, boron oxide, boron carbide, boron nitride, boric acid and borate.
As a preferred embodiment herein, the α -shielding filler includes one or more of metallic aluminum and its compounds (aluminum salts such as alumina, aluminum nitride, aluminum boride, aluminum carbide, aluminum hydroxide, aluminum chloride/borate, and the like, and meta-aluminates such as sodium meta-aluminate).
The preparation method of the alpha radiation aging resistant rubber product comprises the following steps:
(1) respectively preparing two pre-vulcanized rubber latexes, namely common rubber protective layer latex and alpha-ray shielding latex;
(2) cleaning the mould, immersing the mould into a coagulant, and drying to obtain a first intermediate mould;
(3) sequentially immersing a first middle die into alpha shielding filler-containing latex and common rubber protective layer latex;
(4) and (3) shaping, curling, vulcanizing, demolding, cleaning and drying the dipped gloves to obtain the finished product.
In a preferred embodiment of the present application, the coagulant used in step (2) may be one or more of calcium chloride, calcium nitrate, barium chloride, barium nitrate, and cyclohexylamine acetate, which is an organic coagulant, and the mass concentration of the coagulant is 3% to 50%.
As a preferred embodiment in the present application, in the step (3), if necessary, the corresponding latex needs to be dipped for a plurality of times, that is, the alpha-shielding-containing latex is dipped for a plurality of times and then the ordinary rubber protective layer latex is dipped for a plurality of times until the prepared thickness reaches the requirement.
As a preferred embodiment in the present application, before curling, baking and shaping at a certain temperature are performed, and then curling is performed; the vulcanization can be carried out by hot vulcanization or water bath vulcanization; the post-treatment comprises uniformly spreading talcum powder or starch on the surface of the rubber product or adding water to demould the rubber product, adding water to clean the rubber product, and finally drying the rubber product at a certain temperature to completely shape the rubber product.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
Compared with the prior art, the invention has the beneficial effects that:
on the basis that the existing rubber protective product only considers the protection of gamma/X rays or neutrons, the protection effect on alpha rays is further considered. The alpha ray protection adopts metal aluminum and compounds thereof (aluminum salts such as aluminum oxide, aluminum nitride, aluminum boride, aluminum carbide, aluminum hydroxide, aluminum chloride/aluminum borate and the like, and meta-aluminates such as sodium meta-aluminate and the like), and compared with other materials such as polyethylene, water, liquid hydrogen and the like, the aluminum and the compounds thereof are easier to be added into a matrix as solid fillers and realize the molding of products.
And (II) the alpha-radiation aging prevention layer has poor alpha-ray penetration effect, has no special requirement on thickness, can achieve the purpose of shielding alpha rays only through a micron-level thin layer, and has no obvious difference in weight and operability compared with common radiation protection products.
Drawings
FIG. 1 is a schematic cross-sectional view of a rubber article obtained in example 4
Wherein: 1-object to be protected (such as human body), 2-ordinary rubber protective layer, 3-alpha radiation-proof aging layer and 4-alpha radiation environment.
Detailed Description
The rubber product for preventing alpha radiation from aging is based on the existing rubber protective product only considering the protection of gamma/X ray or neutron, and further considers the protection effect on alpha ray. Therefore, the composite material is formed by laminating and compounding a common rubber protective layer and an alpha radiation aging prevention layer.
The latex of the common rubber protective layer is formed by mixing 40-65 wt% of rubber latex, 4-12 wt% of batch and 25-70 wt% of shielding filler, and the common rubber protective layer is formed by dipping the common rubber protective layer latex; the latex of the alpha radiation aging prevention layer is formed by mixing 35-60 wt% of rubber latex, 3-10 wt% of batch, 10-65 wt% of alpha shielding filler (metal aluminum or a compound thereof) and the balance of deionized water, and the alpha radiation aging prevention layer is formed by dipping the latex of the alpha radiation aging prevention layer.
Compounding agents: sulfur, zinc oxide, an accelerant, a reinforcing agent and a stabilizing agent. The mass of the sulfur, the zinc oxide, the accelerant, the reinforcing agent and the stabilizing agent in the whole dipping emulsion is 0.4-5%, 0.5-10%, 0.2-20% and 0.1-3% respectively.
The reinforcing agent is one or more of carbon black, white carbon black, titanium dioxide, graphene and precipitated calcium carbonate. The accelerator is any one or a mixture of zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate and dithiotetramethyl thiuram. The stabilizer is any one or a mixture of more of ammonia water, sodium hydroxide and potassium hydroxide.
The rubber latex comprises one or more of natural latex, butyronitrile latex, neoprene latex, butyl latex, chlorosulfonated polyethylene latex, styrene-butadiene latex and acrylate latex.
The gamma/X ray shielding filler comprises one or more of elementary substances of tungsten, cerium, tin, lanthanum, bismuth, barium, erbium, samarium, gadolinium, tantalum, ytterbium, hafnium, lead and the like, and oxides and other compounds thereof.
The neutron shielding filler comprises one or more of lithium fluoride, lithium bromide, lithium hydroxide, boron oxide, boron carbide, boron nitride, boric acid and borate.
The alpha shielding filler comprises one or more of metallic aluminum and compounds thereof (aluminum salts such as aluminum oxide, aluminum nitride, aluminum boride, aluminum carbide, aluminum hydroxide, aluminum chloride/borate and the like, and meta-aluminates such as sodium meta-aluminate and the like).
The preparation method comprises the following steps: a. respectively preparing two pre-vulcanized latexes of gamma/X-ray or neutron shielding latex and alumina-containing latex; b. cleaning the mould, immersing the mould into a coagulant, and drying to obtain a first intermediate mould; c. sequentially immersing the first middle mould into alpha shielding filler-containing latex, gamma/X rays or neutron shielding latex; d. according to different required thicknesses, the latex containing the alpha shielding filler can be repeatedly dipped for multiple times, and then the gamma/X-ray or neutron shielding latex can be repeatedly dipped for multiple times; e. shaping, curling, vulcanizing, demoulding, cleaning and drying the dipped gloves to obtain finished gloves
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As used in the following examples and comparative examples,%, unless otherwise specified, each represents a mass percent, i.e., wt%.
Example 1:
preparing common rubber protective layer latex:
weighing 50kg of rubber latex, 8kg of batch and 42kg of shielding filler according to a proportion; and then mixing the components uniformly to obtain the product.
Wherein the rubber latex is natural latex; the batch mixture is prepared by mixing sulfur, zinc oxide, an accelerator zinc dibutyl dithiocarbamate, a reinforcing agent carbon black and a stabilizer potassium hydroxide according to a mass ratio of 2:5:5:10: 2.
The shielding filler is tungsten oxide.
Example 2:
preparing common rubber protective layer latex:
weighing 85kg of rubber latex and 15kg of batch according to the proportion; and then mixing them uniformly to obtain the invented product. Wherein the rubber latex is butyronitrile latex; the batch mixture is prepared by mixing sulfur, zinc oxide, an accelerator zinc dibutyl dithiocarbamate, a reinforcing agent carbon black and a stabilizer potassium hydroxide according to a mass ratio of 2:5:5:10: 2.
Example 3:
preparation of latex for protecting alpha radiation aging layer:
weighing 30kg of rubber latex, 5kg of batch, 50kg of alpha shielding filler and 100kg of deionized water according to a proportion, and then uniformly mixing the materials to obtain the rubber latex. The rubber latex and batch were the same as in example 1. The alpha shielding filler is aluminum oxide.
Example 4:
preparation of rubber articles (such as gloves) protected against aging by alpha radiation:
1) the ordinary rubber protective layer latex in the embodiment 1 is placed for 12 hours or more to obtain corresponding prevulcanization latex (the prevulcanization is the prior art, and a vulcanization system is selected from a sulfur vulcanization system);
the latex of the alpha radiation aging-resistant layer in the embodiment 3 is placed for 12 hours or more to obtain corresponding prevulcanization latex (the prevulcanization is the prior art, and the vulcanization system is selected from a sulfur vulcanization system);
2) cleaning the mould, immersing the mould into a coagulant, and drying to obtain a first intermediate mould; the coagulant is calcium chloride, and the mass concentration of the coagulant is 30 percent.
3) Sequentially immersing the first middle mould into the pre-vulcanized latex of the alpha radiation prevention ageing layer and the pre-vulcanized latex of the common rubber protective layer;
4) according to different required thicknesses, the latex of the prevulcanized alpha radiation prevention aged layer can be dipped for multiple times, and then the common rubber protective layer latex after prevulcanized is further dipped for multiple times;
5) and (4) shaping, curling, vulcanizing, demolding, cleaning and drying the dipped product to obtain the finished glove product. The shaping, curling, vulcanizing, demoulding, cleaning and drying are the same as the prior art.
Example 5:
preparation of rubber articles (e.g. gloves) protected against ageing by alpha radiation, the procedure is as in example 4, except that the conventional rubber protective layer latex from example 1 in step 1) is replaced by the conventional rubber protective layer latex of example 2.
Example 6:
the preparation method of the rubber product for preventing alpha radiation aging is the same as that of the example 4, and only the butyronitrile latex is changed into the butyronitrile latex, so that a rubber product No. 1 is obtained; and changing the nitrile latex into chloroprene latex to obtain the rubber product No. 2.
The rubber products 1# and 2# prepared in the examples 4, 5 and 6 were subjected to performance tests, and the specific results are as follows:
the rubber article prepared in example 4, having a thickness of 0.93mm, wherein the alpha radiation aging resistant layer has a thickness of 0.12mm and the general rubber protective layer has a thickness of 0.81mm, was calculated and tested after vulcanization: the tensile strength of the rubber product is 14.3MPa, and the elongation at break is 1011%. It has a shielding efficiency of 18% for gamma rays of 59.5keV energy. The range of the alpha-ray of 5MeV is only 22.0um and is far lower than the thickness of the alpha-radiation aging-proof layer, so that the alpha-ray can not penetrate through the alpha-radiation aging-proof layer to prevent the alpha-radiation aging-proof layer from aging on the inner layer, and the range of the alpha-radiation aging-proof layer is 35.9um compared with a pure natural rubber layer (without an alpha shielding material), the range of the alpha-radiation aging-proof layer is shortened by 39%, and the alpha-radiation aging-proof layer is more beneficial to attenuation of the alpha-radiation aging-proof layer to reduce the damage effect of the alpha-ray on the inner layer rubber.
The rubber article prepared in example 5, having a thickness of 0.85mm, wherein the alpha radiation aging resistant layer has a thickness of 0.09mm and the general rubber protective layer has a thickness of 0.76mm, was calculated and tested after vulcanization: the tensile strength of the rubber product is 24.3MPa, and the elongation at break is 1052%. The product does not contain shielding filler and has no gamma ray shielding effect; the range of the product to alpha rays of 5MeV is 22.0um, which is still far lower than the thickness of the alpha radiation aging-proof layer, so as to ensure that the alpha rays cannot penetrate through the alpha radiation aging-proof layer, and prevent the aging effect of the alpha rays on the inner layer.
The thickness of the rubber product 1# prepared in the example 6 is 0.48mm, wherein the thickness of the alpha radiation aging resistant layer is 0.04mm, and the thickness of the common rubber protective layer is 0.44mm, and the rubber product is calculated and tested after vulcanization: the tensile strength of the rubber product is 17.3MPa, and the elongation at break is 575%. The shielding efficiency of the film on gamma rays with energy of 59.5keV is 10 percent; for alpha rays of 2MeV, the range is 6.6um, and is still far lower than the thickness of the alpha radiation aging prevention layer, so that the alpha rays can not penetrate through the alpha radiation aging prevention layer, and the aging effect of the alpha rays on the inner layer is prevented.
The thickness of the rubber product No. 2 prepared in the example 6 is 0.66mm, wherein the thickness of the alpha radiation aging resistant layer is 0.05mm, and the thickness of the common rubber protective layer is 0.61mm, and the rubber product is obtained by calculation and test after vulcanization: the tensile strength of the rubber product is 15.9MPa, and the elongation at break is 1375%. The shielding efficiency of the film on gamma rays with energy of 59.5keV is 15 percent; for alpha rays of 4MeV, the range is 16.1um, and the range is still lower than the thickness of the alpha radiation aging prevention layer, so that the alpha rays can not penetrate through the alpha radiation aging prevention layer, and the aging effect on the inner layer is prevented.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above examples are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited to the above examples, and all designs and technical solutions using the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications to the design of the present invention without departing from the principle of the present invention should be considered as the protection scope of the present invention by those skilled in the art. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims (10)

1. A rubber product for preventing alpha radiation aging is characterized in that: the rubber product is formed by laminating and compounding a common rubber protective layer and an alpha radiation aging prevention layer; wherein the single-layer thickness of the rubber product is 0.2 mm-2 mm, and the thickness of the alpha radiation aging-resistant layer is 0.03-0.5 mm.
2. The rubber product for preventing alpha radiation aging of claim 1, wherein the common rubber protective layer is prepared by mixing and dipping 40-65% by mass of rubber latex, 4-12% by mass of batch and 25-70% by mass of shielding filler, and the sum of the mass percentages is 100%; or is prepared by mixing and dipping 80-95 percent of rubber latex and 5-20 percent of batch materials in percentage by mass, wherein the total percentage by mass is 100 percent.
3. An alpha radiation aging resistant rubber article according to claim 1 or claim 2, wherein: the alpha radiation aging prevention layer is formed by mixing and dipping 35-60% of rubber latex, 3-10% of batch, 10-65% of alpha shielding filler and 10-70% of deionized water in percentage by mass, and the total percentage by mass is 100%.
4. The alpha radiation aging resistant rubber article of claim 2, wherein: the shielding filler is gamma/X ray shielding filler or neutron shielding filler; the alpha shielding filler comprises one or more of metallic aluminum and a compound thereof.
5. An alpha radiation aging resistant rubber article according to claim 2 or claim 3, wherein: the batch comprises sulfur, zinc oxide, an accelerator, a reinforcing agent and a stabilizer; the sulfur, the zinc oxide, the accelerant, the reinforcing agent and the stabilizing agent respectively account for 0.4 to 5 percent, 0.5 to 10 percent, 0.2 to 20 percent and 0.1 to 3 percent of the whole dipping emulsion by mass percent.
6. The alpha radiation aging resistant rubber article of claim 5, wherein: the reinforcing agent comprises one or more of carbon black, white carbon black, titanium dioxide, graphene and precipitated calcium carbonate.
7. The alpha radiation aging resistant rubber article as recited in any one of claims 1 to 6, wherein: the rubber latex comprises one or more of natural latex, butyronitrile latex, neoprene latex, butyl latex, chlorosulfonated polyethylene latex, styrene-butadiene latex and acrylate latex.
8. The alpha radiation aging resistant rubber article of claim 4, wherein: the gamma/X ray shielding filler is any one or more of tungsten, cerium, tin, lanthanum, bismuth, barium, erbium, samarium, gadolinium, tantalum, ytterbium, hafnium, lead simple substances, oxides thereof and other compounds; the neutron shielding filler is any one or more of lithium fluoride, lithium bromide, lithium hydroxide, boron oxide, boron carbide, boron nitride, boric acid and borate.
9. The method for preparing the alpha radiation aging-resistant rubber product according to any one of claims 1 to 8, characterized by comprising the following steps:
(1) respectively preparing latex of a common rubber protective layer and latex of an alpha radiation aging resistant layer;
(2) cleaning the mould, immersing the mould into a coagulant, and drying to obtain a first intermediate mould; the coagulant is any one or a mixture of more of calcium chloride, calcium nitrate, barium chloride, barium nitrate and cyclohexylamine acetate, and the mass concentration of the coagulant is 3-50%;
(3) sequentially immersing the first middle mould into the latex of the alpha radiation-proof ageing layer and the latex of the common rubber protective layer;
(4) and (4) shaping, curling, vulcanizing, demolding, cleaning and drying the dipped gloves to obtain finished products.
10. A method of making a rubber article protected from aging by alpha radiation as claimed in claim 9, wherein: and (4) repeating the step (3), namely dipping the alpha-containing shielding latex for multiple times and then dipping the common rubber protective layer latex for multiple times until the prepared thickness meets the requirement.
CN202110817451.4A 2021-07-20 2021-07-20 Rubber product capable of preventing alpha radiation aging and preparation method thereof Pending CN113462041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110817451.4A CN113462041A (en) 2021-07-20 2021-07-20 Rubber product capable of preventing alpha radiation aging and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110817451.4A CN113462041A (en) 2021-07-20 2021-07-20 Rubber product capable of preventing alpha radiation aging and preparation method thereof

Publications (1)

Publication Number Publication Date
CN113462041A true CN113462041A (en) 2021-10-01

Family

ID=77881376

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110817451.4A Pending CN113462041A (en) 2021-07-20 2021-07-20 Rubber product capable of preventing alpha radiation aging and preparation method thereof

Country Status (1)

Country Link
CN (1) CN113462041A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115469350A (en) * 2022-10-14 2022-12-13 广州兰泰胜科技有限公司 Device and method for protecting hands and monitoring radiation in real time

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016166739A (en) * 2015-02-26 2016-09-15 有限会社技研産業 Radiation shield composition, radiation shield material, and radiation shield building material
CN106213630A (en) * 2016-07-27 2016-12-14 中国工程物理研究院材料研究所 A kind of multilamellar radiation protection gloves and processing technology thereof
CN106415732A (en) * 2014-06-23 2017-02-15 Rsm技术有限责任公司 Composition for radiation shielding and method for preparing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106415732A (en) * 2014-06-23 2017-02-15 Rsm技术有限责任公司 Composition for radiation shielding and method for preparing same
US20170200518A1 (en) * 2014-06-23 2017-07-13 Rsmtech Co., Ltd. Composition for radiation shielding and method for preparing same
JP2016166739A (en) * 2015-02-26 2016-09-15 有限会社技研産業 Radiation shield composition, radiation shield material, and radiation shield building material
CN106213630A (en) * 2016-07-27 2016-12-14 中国工程物理研究院材料研究所 A kind of multilamellar radiation protection gloves and processing technology thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115469350A (en) * 2022-10-14 2022-12-13 广州兰泰胜科技有限公司 Device and method for protecting hands and monitoring radiation in real time

Similar Documents

Publication Publication Date Title
US8728349B2 (en) Lead-free X-ray shielding rubber composite
CN102708937B (en) Anti-thermal neutron radiation shielding material and preparation method thereof
CN110804313B (en) High electromagnetic shielding rubber composition and preparation method thereof
CN102855982B (en) Shielding longitudinal watertight degaussing cable and production method thereof for ships
CN113462041A (en) Rubber product capable of preventing alpha radiation aging and preparation method thereof
CN103275417B (en) Composite anti-radiation material
CN109712736B (en) Tritium protection material and preparation method thereof
CN112662020A (en) Lead-free nuclear radiation protection glove and preparation method thereof
CN111849175B (en) Irradiation-resistant lead-free radiation shielding flexible material, and preparation method and application thereof
CN106566013A (en) Anti-X, gamma ray and neutron radiation shielding material and preparation method thereof
CN104744945B (en) Neutron shielding material with anti-flaming thermal-insulation performance and preparation method thereof
CN110867265B (en) Flexible neutron radiation protection material and preparation method of protection article
EP3390527B1 (en) Halogen free and fire-resistant rubber composition and hose
CN109370066A (en) One kind can turning EPDM rubber insulation material and preparation method thereof
CN112545087A (en) Chemical-resistant multilayer radiation-proof glove
CN102516567A (en) Coordination crosslinking method for reinforced anti-aging nitrile elastomer
CN1115484A (en) Protecting material for fast neutron radiation
JP7264057B2 (en) Epihalohydrin rubber composition and rubber laminate
CN114262487A (en) Nuclear radiation resistant vulcanized rubber and preparation method thereof
CN110760131B (en) Benzoxazine resin/ethylene propylene diene monomer composite heat insulating layer and preparation method thereof
CN113929356B (en) Flexible lead-free X-ray protection material and preparation method and application thereof
KR20160010715A (en) Radiation shielding thin-film composite materials made by non-leaded bismuth-tin alloy particles dispersed in the polymer
CN113429643A (en) Multi-material composite rubber product and preparation method thereof
WO2023282545A1 (en) Lead-free gamma radiation shielding sheet and manufacturing method therefor
CN115894986A (en) Six-prevention gloves and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20211001