CN111403069A - Radiation protection composition, radiation protection material and radiation protection product - Google Patents

Radiation protection composition, radiation protection material and radiation protection product Download PDF

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CN111403069A
CN111403069A CN201811605546.4A CN201811605546A CN111403069A CN 111403069 A CN111403069 A CN 111403069A CN 201811605546 A CN201811605546 A CN 201811605546A CN 111403069 A CN111403069 A CN 111403069A
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parts
radiation
radiation protection
weight
protective
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郑林
徐永平
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SUZHOU COLOUR-WAY ENTERPRISE DEVELOPMENT CO LTD
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SUZHOU COLOUR-WAY ENTERPRISE DEVELOPMENT CO LTD
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    • 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
    • G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material
    • G21F3/02—Clothing
    • G21F3/035—Gloves
    • 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
    • G21F1/08—Metals; Alloys; Cermets, i.e. sintered mixtures of ceramics and metals
    • G21F1/085—Heavy metals or alloys
    • 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

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  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Gloves (AREA)

Abstract

The invention discloses a radiation protection composition, a radiation protection material and a radiation protection product. The radiation protection composition comprises the following components in parts by weight: 5-20 parts of aluminum oxide, 5-20 parts of lanthanum oxide and 20-60 parts of tantalum pentoxide. The radiation protection composition is used for manufacturing radiation protection products, has better radiation protection performance, and the manufactured radiation protection products such as gloves have better comfort, and is particularly suitable for medical personnel participating radiotherapy and nuclear medicine.

Description

Radiation protection composition, radiation protection material and radiation protection product
Technical Field
The invention relates to the technical field of radiation protection, in particular to a radiation protection composition, a radiation protection material and a radiation protection product.
Background
Ionizing radiation is widely used in industry and medical field, and there are many opportunities for people to be exposed to ionizing radiation, among which, X-ray radiation is the most common harmful ionizing radiation, and such as radiation therapy involved in interventional operations and the like, medical workers in radiodiagnosis, workers involved in nuclear waste treatment, residents living in high radiation areas or affected by nuclear leakage accidents, and the like are easily exposed to ionizing radiation. After people suffer from ionizing radiation, a series of injuries can be generated on the body, including immune dysfunction, gene mutation, cell death and even canceration and the like. Radiation protection technology, also known as radiation protection technology or radiation shielding technology, is a technology specifically used to protect people from ionizing radiation.
Chinese patent publication No. CN102549057A entitled "radiation attenuating elastomeric material, ionizing radiation resistant multilayer protective glove and use thereof" discloses a radiation attenuating elastomeric material formed by dispersing metal oxide powder containing 70 to 90 mass% of bismuth trioxide, 5 to 15 mass% of tungsten trioxide and 5 to 15 mass% of lanthanum trioxide into an elastomer. Layer C2 of the glove was about 100 μm thick, and layers C1 and C3 were each about 200 μm thick. The glove has a thickness of about 450-710 μm and the glove achieves a gamma radiation attenuation factor of 1.5 to 4.
The Chinese invention patent with the publication number of CN105513660A and the name of novel radiation-proof material and gloves made of the same discloses a radiation-proof material, which comprises the following components in percentage by weight: nano bismuth trioxide: 55-73%; aluminum fluoride: 20 to 35 percent; lanthanum trioxide: 3 to 10 percent; nano tungsten trioxide: 3 to 10 percent; fullerol nanoparticles: 1 to 2 percent. The weight percentage of the radiation-proof material in the prepared glove is about 30-40%, and the shielding of the glove reaches 60-65% under the irradiation of 60keV energy.
European patent publication No. EP1644938B1 entitled "RADIATION PROTETION MATERIA L LL YFOR USE AS RADIATION PROTETION G L OVES" discloses the USE of bismuth oxide particles dispersed in natural rubber or the USE of tungsten oxide, tin oxide or tin oxide/antimony oxide particles mixed with bismuth oxide particles dispersed in natural rubber.
The existing scheme is difficult to balance in the aspects of obtaining better radiation protection performance and better glove comfort, meanwhile, a larger difference exists between the product cost input and the market demand psychological price, and the objective requirements (such as operation convenience) of the use environment of a user on the product are not considered.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, an object of the present invention is to provide a radiation protection composition with better radiation protection performance, which has better product manufacturing cost to benefit the popular public demanders, better convenience and accuracy for the user to operate, better operation safety and better wearing convenience, and is used for manufacturing gloves and other products with better wearing comfort.
Another object of the present invention is to provide a radiation-shielding material comprising the above radiation-shielding composition.
It is a further object of the present invention to provide a radiation-protective article comprising the above-described radiation-protective composition.
The purpose of the invention is realized by adopting the following technical scheme:
a radiation protection composition comprises, by weight, 5-20 parts of aluminum oxide, 5-20 parts of lanthanum oxide and 20-60 parts of tantalum pentoxide.
Preferably, the radiation protection composition further comprises one or two of 10-30 parts of tungsten trioxide and 0-2 parts of fullerol by weight.
Preferably, the tungsten trioxide has an average particle diameter of 100 to 500nm, and the number of hydroxyl groups of the fullerene alcohol is 8 to 24.
Preferably, the average grain size of the aluminum oxide is 100 nm-500 nm, the average grain size of the lanthanum oxide is 100 nm-500 nm, and the average grain size of the tantalum pentoxide is 100 nm-500 nm.
A radiation-protective material comprising a substrate selected from a rubber, a thermoplastic polymer or a fabric and a radiation-protective composition as described above, the radiation-protective composition being incorporated in or bonded to the substrate.
Preferably, the radiation protective material comprises 15 to 50 parts by weight of a base material and 50 to 90 parts by weight of the radiation protective composition.
A radiation-protective article comprising the radiation-protective composition described above.
Preferably, the radiation protective article is a glove for radiation protection, the glove having an outer surface with an average surface roughness of 7 μm to 8 μm.
Preferably, the radiation protective article comprises rubber and the radiation protective composition described above, the radiation protective article having a density of 2.5g/cm3～5.0g/cm3。
Preferably, the density of the radiation protective article is 4.0g/cm3～4.5g/cm3。
Compared with the prior art, the invention at least comprises the following beneficial effects: the radiation protection composition is used for manufacturing radiation protection products, has better radiation protection performance, and the manufactured radiation protection products such as gloves and the like have better comfort, wearing convenience and operation safety and accuracy, and is particularly suitable for people who are affected by radiation, such as medical staff participating in radiotherapy and nuclear medicine. The product of the invention has low manufacturing cost and is beneficial to popularization.
Drawings
Fig. 1 is a schematic view of the structure of a conventional glove.
Fig. 2 is a schematic structural view of a radiation protective glove according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will now be described in a number of examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Technical contributions or effects of the present invention are not limited to solving technical problems and disadvantages in the related art, and specific reference is made to the following more detailed description.
Embodiments of the present invention provide a radioprotective composition comprising an aluminum oxide (Al)2O3) Lanthanum sesquioxide (L a)2O3) Bismuth trioxide (Bi)2O3) Tantalum pentoxide (Ta)2O5) Tungsten trioxide (WO)3) May further comprise a fullerene (C)60(OH)n). The radiation protection composition is used for manufacturing radiation protection products, can effectively shield ionizing radiation, including X rays or gamma rays, can make up the weak absorption interval of the absorption curve of a single substance to the rays by matching the materials, achieves the best absorption effect, can be used for shielding protection within the energy range of 60 keV-120 keV, and is particularly suitable for shielding protection within the energy range of 60 keV-80 keV for diagnosis. The material has good chemical stability, no toxicity and no degradation effect on the combined base material, and is an ideal material for shielding ionizing radiation.
Wherein the average grain size of the aluminum oxide is 100nm to 500nm, optionally, the average grain size of the aluminum oxide is 200nm, 300nm, 350nm, 400 nm. The average grain size of the lanthanum trioxide is 100 nm-500 nm, and optionally, the average grain size of the lanthanum trioxide is 200nm, 300nm, 350nm, 400 nm. The average particle size of the bismuth trioxide is 100 nm-500 nm, and optionally, the average particle size of the bismuth trioxide is 200nm, 300nm, 350nm, or 400 nm. The average particle size of the tantalum pentoxide is 100nm to 500nm, and optionally, the average particle size of the tantalum pentoxide is 200nm, 300nm, 350nm, or 400 nm. The tungsten trioxide has an average particle size of 100nm to 500nm, optionally 200nm, 300nm, 350nm, 400 nm. The number n of hydroxyl groups of the fullerol is 8-24, and optionally the number n of hydroxyl groups of the fullerol is 10, 15, 20. Within the above particle size range, the radiation protective composition of the present invention has better radiation protective properties.
In one embodiment, the radiation protective composition comprises 5 to 20 parts by weight of aluminum oxide and 5 to 20 parts by weight of lanthanum oxide. Alternatively, the part by weight of the aluminum oxide may be 10 parts, 12 parts or 15 parts, and the part by weight of the lanthanum oxide may be 10 parts, 12 parts or 15 parts. The aluminum oxide is matched with the lanthanum oxide to play a role of a radiation protective agent, and the surface glossiness of the product can be obviously improved.
In another embodiment, the radiation protective composition comprises 5 to 20 parts by weight of lanthanum trioxide and 25 to 70 parts by weight of tungsten trioxide. Alternatively, lanthanum trioxide may be present in 5, 10, 12 or 15 parts by weight and tungsten trioxide in 30, 40, 50, 55 or 60 parts by weight, although it is noted that the amount of tungsten oxide is controlled within government permitted safety limits. The tungsten trioxide has a contribution effect on the surface display color of materials and products.
In yet another embodiment, the radioprotective composition comprises, by weight, 25 to 50 parts bismuth trioxide and 25 to 50 parts tantalum pentoxide. Alternatively, the weight part of bismuth trioxide may be 30 parts, 40 parts or 45 parts, and the weight part of tantalum pentoxide may be 30 parts, 40 parts or 45 parts.
In yet another embodiment, the radioprotective composition comprises tantalum pentoxide in parts by weight.
In still another embodiment, the radiation protective composition comprises 5 to 20 parts by weight of aluminum oxide and 40 to 80 parts by weight of a first metal oxide, wherein the first metal oxide comprises bismuth trioxide. Alternatively, the part by weight of the alumina may be 10 parts, 12 parts or 15 parts, and the part by weight of the first metal oxide may be 50 parts, 55 parts, 60 parts, 65 parts or 70 parts. The aluminum oxide is matched with the bismuth trioxide, so that the radiation protection performance and the surface glossiness of the product can be effectively improved, the relative cost of the product is effectively reduced, and the popularization is facilitated.
In yet another embodiment, the radiation protective composition includes 5 to 20 parts by weight of aluminum oxide and 40 to 55 parts by weight of tantalum pentoxide. Alternatively, the part by weight of the aluminum oxide may be 10 parts, 12 parts or 15 parts, and the part by weight of the tantalum pentoxide may be 45 parts, 49 parts, 50 parts or 52 parts.
In yet another embodiment, the radiation protective composition includes, by weight, 5 to 20 parts of lanthanum trioxide and 50 to 80 parts of a second metal oxide including bismuth trioxide. Alternatively, the weight part of the lanthanum oxide may be 10 parts, 12 parts or 15 parts, and the weight part of the second metal oxide may be 55 parts, 60 parts, 65 parts or 70 parts.
In yet another embodiment, the radiation protective composition includes, by weight, 5 to 20 parts of lanthanum trioxide and 50 to 80 parts of a third metal oxide including tantalum pentoxide. Alternatively, the weight part of the lanthanum oxide may be 10 parts, 12 parts or 15 parts, and the weight part of the third metal oxide may be 55 parts, 60 parts, 65 parts or 70 parts. Lanthanum sesquioxide and tantalum pentoxide can better promote the absorption effect to radiation, make up the not enough in weak absorption region.
In another embodiment, the radiation protective composition comprises, by weight, 5 to 20 parts of aluminum oxide, 5 to 20 parts of lanthanum oxide, and 20 to 60 parts of bismuth oxide. Alternatively, the part by weight of the aluminum oxide may be 5 parts, 10 parts, 12 parts or 15 parts, the part by weight of the lanthanum oxide may be 5 parts, 10 parts, 12 parts or 15 parts, and the part by weight of the bismuth oxide may be 30 parts, 40 parts, 45 parts, 50 parts or 55 parts.
In another embodiment, the radiation protective composition comprises 5 to 20 parts by weight of aluminum oxide, 5 to 20 parts by weight of lanthanum oxide and 20 to 60 parts by weight of tantalum pentoxide. Alternatively, the part by weight of the aluminum oxide may be 10 parts, 12 parts or 15 parts, the part by weight of the lanthanum oxide may be 10 parts, 12 parts or 15 parts, and the part by weight of the tantalum pentoxide may be 30 parts, 40 parts, 45 parts, 50 parts or 55 parts.
In yet another embodiment, the radiation protective composition comprises, by weight, 5 to 20 parts of aluminum oxide, 5 to 20 parts of lanthanum oxide, 20 to 35 parts of bismuth oxide, and 15 to 35 parts of tantalum pentoxide. Alternatively, the part by weight of the aluminum oxide may be 10 parts, 12 parts or 15 parts, the part by weight of the lanthanum oxide may be 10 parts, 12 parts or 15 parts, the part by weight of the bismuth oxide may be 25 parts, 30 parts or 32 parts, and the part by weight of the tantalum pentoxide may be 25 parts, 30 parts or 32 parts.
Embodiments of the present invention also provide a radiation protective material comprising any one of the radiation protective compositions described above, optionally further comprising a substrate, preferably an elastomeric material, which may be selected from, by way of example, rubber, thermoplastic polymers or fabrics, preferably the substrate is rubber. The radiation protective composition is incorporated into or bonded to a substrate, for example, by melting, hot pressing, cold pressing, calendering, stretching, granulating, injection molding, extruding, spraying, and the like, to form a radiation protective material that can be used to make radiation protective articles. The radiation protection material comprises, by weight, 15-50 parts of a base material and 50-90 parts of a radiation protection composition. Alternatively, the radiation protective material may further comprise 25 parts, 30 parts, 35 parts, or 45 parts by weight of the base material and the radiation protective composition may further comprise 65 parts, 70 parts, 75 parts, or 85 parts by weight of the radiation protective material.
Wherein, the rubber can be natural rubber or synthetic rubber, preferably natural rubber, one or more additives commonly used in the field such as cross-linking agent, activating agent, anti-aging agent, stabilizing agent, coloring agent and the like can be added into the rubber, and the radiation protection composition is doped into the rubber to form the radiation protection material. As an example, the synthetic rubber is selected from, for example, acrylic rubber, chlorosulfonated polyethylene rubber, nitrile rubber, isoprene rubber, ethylene propylene rubber, acrylonitrile rubber, chloroprene rubber, urethane rubber, silicone rubber, fluorine rubber, polyisobutylene rubber.
The thermoplastic polymer is a thermoplastic polymeric material well known to those skilled in the art, and one or more of the additives commonly used in the art, such as adjuvants, stabilizers, colorants, etc., may be added to the thermoplastic polymer, and the radiation shielding composition is incorporated into the thermoplastic polymer to form a radiation shielding material. By way of example, the thermoplastic polymer is chosen, for example, from polyethylene, polypropylene, polyamide, polyvinyl chloride, polystyrene, polyvinyl alcohol, polyester.
The fabric may be a textile formed from natural fibres, synthetic fibres, for example woven from one or more of nylon, polyester, polyurethane, polyolefin to form a fabric. The radiation-protective composition is sprayed onto the fabric or is incorporated into the fabric by soaking to form the radiation-protective material.
The radiation protection material disclosed by the invention not only has better radiation protection performance, but also has better comfort, convenience in wearing and safety and accuracy in operation of radiation protection products such as gloves and the like made of the radiation protection material, and is particularly suitable for people who are affected by radiation, such as medical staff participating in radiotherapy and nuclear medicine. The product of the invention has low manufacturing cost and is beneficial to popularization.
Example 1
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
5 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 300 nm;
15 parts of lanthanum sesquioxide, the average particle size of the lanthanum sesquioxide being about 400 nm;
55 parts of tantalum pentoxide having an average particle size of about 400 nm.
Example 2
The radiation protection material of the embodiment comprises the following components in parts by weight:
22 parts of rubber;
20 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
8 parts of lanthanum sesquioxide, wherein the average particle size of the lanthanum sesquioxide is about 350 nm;
35 parts of tantalum pentoxide having an average particle size of about 400 nm.
Example 3
The radiation protection material of the embodiment comprises the following components in parts by weight:
35 parts of rubber;
10 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 500 nm;
10 parts of lanthanum sesquioxide, the average particle size of the lanthanum sesquioxide being about 350 nm;
55 parts of tantalum pentoxide having an average particle size of about 350 nm.
Example 4
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
10 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 500 nm;
10 parts of lanthanum sesquioxide, the average particle size of the lanthanum sesquioxide being about 400 nm;
49 parts of tantalum pentoxide, the average particle size of the tantalum pentoxide being about 300 nm;
1 part of fullerol, wherein the hydroxyl number of the fullerol is 10.
Example 5
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
14 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
10 parts of lanthanum sesquioxide, the average particle size of the lanthanum sesquioxide being about 450 nm;
50 parts of tantalum pentoxide having an average particle size of about 350 nm;
1 part of fullerol, wherein the hydroxyl number of the fullerol is 20.
Example 6
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
10 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
10 parts of lanthanum sesquioxide, the average particle size of the lanthanum sesquioxide being about 450 nm;
45 parts of tantalum pentoxide having an average particle size of about 350 nm;
15 parts of tungsten trioxide, the mean particle size of which is about 350 nm.
Example 7
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
19 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
5 parts of lanthanum sesquioxide, wherein the average particle size of the lanthanum sesquioxide is about 450 nm;
25 parts of tantalum pentoxide having an average particle size of about 350 nm;
25 parts of tungsten trioxide, the tungsten trioxide having an average particle size of about 350 nm;
1 part of fullerol, wherein the hydroxyl number of the fullerol is 20.
Example 8
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
19 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
5 parts of lanthanum sesquioxide, wherein the average particle size of the lanthanum sesquioxide is about 450 nm;
25 parts of tantalum pentoxide having an average particle size of about 350 nm;
25 parts of tungsten trioxide, the tungsten trioxide having an average particle size of about 350 nm;
1 part of fullerol, wherein the hydroxyl number of the fullerol is 10.
Example 9
The radiation protection material of the embodiment comprises the following components in parts by weight:
25 parts of rubber;
19 parts of aluminum oxide, wherein the average particle size of the aluminum oxide is about 400 nm;
5 parts of lanthanum sesquioxide, wherein the average particle size of the lanthanum sesquioxide is about 450 nm;
25 parts of tantalum pentoxide having an average particle size of about 350 nm;
25 parts of tungsten trioxide, the tungsten trioxide having an average particle size of about 350 nm;
1 part of fullerol, wherein the hydroxyl number of the fullerol is 8.
Embodiments of the present invention also provide a radiation-protective article comprising the radiation-protective composition described above. The radiation protection article can be formed into a variety of shapes and configurations as desired, and is particularly useful for forming radiation protection articles having a degree of flexibility including, but not limited to, radiation protective gloves, aprons, knee pads, neckerchiefs, sleeves, garments, surgical drapes, protective pads, protective panels, protective covers, protective containers, bras, foot covers, protective films, or protective coatings. The radiation protection product provided by the invention has the advantages of good radiation protection effect, light weight, wearing comfort and the like.
It should be noted that, referring to fig. 1 and 2, the glove manufactured by using the embodiment with lanthanum oxide and/or tantalum pentoxide has rough protrusions formed on the surface thereof, and these rough protrusions can generate enough friction force to facilitate the wearing of the glove by the user, and the held object is not easy to slip off when sweating or wetting. The applicant has surprisingly found that by adjusting the composition and/or average particle size of lanthanum trioxide, tantalum pentoxide, for example, in the examples lanthanum trioxide of about 450nm, and the average particle size of tungsten trioxide of about 450nm, the size of the protuberances on the glove surface can be adjusted appropriately, and in particular the average surface roughness of the outer surface of the glove can be adjusted within the range of 2 μm to 9 μm, and that by varying the composition and particle size of lanthanum trioxide, the glove of the invention, in particular the average surface roughness of the glove can be adjusted within the range of 7 μm to 8 μm, and thus the surface roughness and friction of the glove, the surface roughness of the finished glove is particularly suitable for wearing during interventional procedures, and the glove can achieve a suitable surface roughness without the addition of other procedures for modifying the surface roughness.
In other embodiments, the glove of the present invention may be divided into two portions, a rough portion 10 having a rough surface and a smooth portion 20. The rough surface portion 10 is mainly worn on the palm and fingers, and the smooth surface portion 20 is mainly worn on the parts other than the palm and fingers, such as the wrist. By adopting the mode, the glove can be conveniently worn by a user, and meanwhile, the glove is beneficial to the user to carry out various fine operations after the glove is worn.
In still another embodiment, the glove of the present invention has a wearing opening 30, the wearing opening 30 and a palm connecting portion form a variable width wristband portion 40, and the wristband portion 40 gradually narrows in width from the wearing opening 30 toward the palm. This design facilitates the wearing of the glove by the user.
In particular, the cuff portion has a width dimension at its narrowest width generally corresponding to an adult wrist width. The width dimension of the widest part of the wrist sleeve part is generally one quarter to two thirds larger than the width of the narrowest part. Such design not only is favorable to the user to dress gloves, wears the gloves moreover and is difficult for droing when the operation.
It is particularly noted that when the radiation protective article is a rubber article, i.e. when the radiation protective article comprises a rubber and a radiation protective composition, such as a protective glove, the density of the rubber article has a major effect on the radiation protective properties of the radiation protective article, preferably the density of the radiation protective article is 2.5g/cm3～5.0g/cm3Further, the density of the radiation protective article is 4.0g/cm3～4.5g/cm3。
Radiation protection articles, in particular radiation protection gloves, which can be used in the technical fields affected by ionizing radiation, such as interventional surgery and nuclear medicine, can be manufactured by known immersion techniques, and can be manufactured to a thickness of 0.08mm to 0.45mm, preferably 0.1mm to 0.3mm, in order to take into account the flexibility, mechanical properties and radiation protection properties of the gloves.
The radiation-proof materials of the embodiments 1 to 9 are adopted to manufacture the gloves, and the manufacturing method comprises the following steps:
(1) mixing the liquid rubber and the radiation protection composition, and stirring for about 1h at 45-50 ℃;
(2) cooling the mixture obtained in the step (1) to room temperature (20-25 ℃), and immersing the glove mold into the mixture for about 0.5 h;
(3) after the dipping is finished, baking the glove mold at the temperature of 110-120 ℃ for 2-5 minutes, soaking the mixture in the step (2) for 25-30 minutes, baking at the temperature of 110-120 ℃ for 2-5 minutes, and drying for about 40-50 minutes;
(4) and (5) demolding to obtain the glove.
The thickness, the average surface roughness of the outer surface, the mechanical properties and the radiation attenuation properties of the corresponding gloves of the above examples were measured, and the results are shown in tables 1 and 2. Wherein the thickness of the glove can be obtained by a conventional thickness detection method, the mechanical property of the glove is detected according to EN374 and EN455-2 test standards, and the radiation attenuation property of the glove is detected by detecting the radiation attenuation shielding rate of the glove with the corresponding thickness to X-rays under the X-ray tube voltage of 60keV, 70keV, 80keV, 100keV and 120 keV.
TABLE 1
Figure BDA0001923501850000091
Figure BDA0001923501850000101
As can be seen from the results of the mechanical property test of the glove in Table 1, the glove of the embodiment of the invention has better tensile strength and flexibility, the mechanical property meets the requirements of ASTM D3577-09 Standard Specification for rubber medical gloves, and the glove is particularly suitable for occasions with higher requirements on the flexibility of the hand operation of a wearer, such as interventional surgery. Particularly, the gloves containing the fullerol have obviously better flexibility, and particularly, the fullerol with the hydroxyl number of 10-20 has an obvious effect of improving the flexibility of the gloves.
The radiation protection effect of the glove corresponding to the above example was measured in accordance with the specification of YY/T0481-2016 radiation Condition for measuring characteristics of medical diagnostic X-ray apparatus (IEC 61267:2005), and the data obtained by the measurement are shown in Table 2.
TABLE 2
Figure BDA0001923501850000102
From Table 2As can be seen from the detection result of the radiation attenuation of the glove, the glove provided by the embodiment of the invention has obviously better radiation protection capability, can effectively shield X rays, and particularly has obvious shielding effect on the X rays with the voltage of 60 keV-80 keV of an X-ray tube. As can be seen from tables 1 and 2, the density was 4.0g/cm3～4.5g/cm3The glove has better radiation shielding effect, and can simultaneously take into account the flexibility and the ductility of the glove.
Although embodiments of the present invention have been shown and described, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, all such changes being within the scope of the appended claims.

Claims (10)

1. The radiation protection composition is characterized by comprising, by weight, 5-20 parts of aluminum oxide, 5-20 parts of lanthanum oxide and 20-60 parts of tantalum pentoxide.
2. The radioprotective composition of claim 1, further comprising one or both of 10-30 parts by weight of tungsten trioxide and 0-2 parts by weight of fullerol.
3. The radioprotective composition of claim 2, wherein the tungsten trioxide has an average particle size of 100nm to 500nm, and the fullerene alcohol has a hydroxyl group number of 8 to 24.
4. The radioprotective composition of claim 1, wherein the alumina has an average particle size of 100nm to 500nm, the lanthanum oxide has an average particle size of 100nm to 500nm, and the tantalum pentoxide has an average particle size of 100nm to 500 nm.
5. A radiation-protective material comprising a substrate selected from a rubber, a thermoplastic polymer or a fabric and a radiation-protective composition according to any one of claims 1 to 4, wherein the radiation-protective composition is incorporated in or bonded to the substrate.
6. The radiation-shielding material of claim 5, wherein the radiation-shielding material comprises, by weight, 15 to 50 parts of the substrate and 50 to 90 parts of the radiation-shielding composition.
7. A radiation-protective article comprising the radiation-protective composition of any one of claims 1 to 4.
8. The radiation-protective article according to claim 7, wherein the radiation-protective article is a glove for radiation protection, the glove having an outer surface with an average surface roughness of from 7 μm to 8 μm.
9. The radiation-protective article according to claim 7, comprising rubber and the radiation-protective composition according to any one of claims 1 to 4, wherein the radiation-protective article has a density of 2.5g/cm3～5.0g/cm3。
10. The radiation-protective article according to claim 9, wherein the radiation-protective article has a density of 4.0g/cm3～4.5g/cm3。
CN201811605546.4A 2018-12-13 2018-12-26 Radiation protection composition, radiation protection material and radiation protection product Pending CN111403069A (en)

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CN111403063A (en) 2020-07-10
CN111403061A (en) 2020-07-10

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