Lead-free anti-radiation glove and preparation method thereof

Abstract

The invention discloses a lead-free anti-radiation glove and a preparation method thereof, and relates to the technical field of gloves. The lead-free anti-radiation glove comprises a wearing layer, a calcium ion layer attached to the wearing layer and an anti-radiation layer attached to the calcium ion layer, the wearing layer is prepared from deproteinized latex and polyurethane emulsion, and the anti-radiation layer is prepared from, by weight, 100 parts of natural latex, 0.1-0.4 part of casein and 40-60 parts of anti-radiation material dispersion liquid. And 0.5 to 1.0 part of a hydroxyethyl cellulose solution. The calcium ion layer is located between the wearing layer and the anti-radiation layer, so that the wearing layer and the anti-radiation layer are tightly and stably connected to form the composite layer disposable medical glove, the wearing comfort is met, and the composite layer disposable medical glove has excellent anti-radiation performance and good toughness.

Description

TECHNICAL FIELD

[0002] The present application relates to the technical field of gloves, in particular to a lead-free radiation protection glove and a preparation method thereof. BACKGROUND

[0003] During interventional surgery and radiological diagnosis, the hands of medical staff are frequently exposed to radiation such as X-rays, and radiation protection gloves can significantly reduce the damage of radiation to the skin and tissues. Although the traditional lead-containing radiation protection gloves can reduce the damage of radiation to the skin and tissues to a certain extent, the lead-containing gloves are thick, which reduces the flexibility and tactile sensitivity of fingers when worn, and affects the accuracy of surgical operation. Moreover, lead is a toxic heavy metal, and the disposal of lead-containing gloves needs to be strictly controlled.

[0004] There are also gloves containing tungsten and other radiation protection materials on the market. Although such gloves are thinner and do not contain toxic metals compared with lead-containing gloves, long-term wearing of the gloves can cause a hot feeling in the hands, affecting the comfort of wearing. In addition, due to the physical properties of tungsten powder and other radiation protection materials, it is difficult for them to disperse uniformly in the latex matrix, affecting the storage of the latex, especially in long-term continuous production, which can cause phase separation of the slurry, affecting the radiation protection performance and toughness of the formed gloves. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a lead-free radiation protection glove and a preparation method thereof.

[0006] To achieve the above-mentioned purpose, the present application provides a lead-free radiation protection glove, which comprises a wearing layer, a calcium ion layer attached to the wearing layer, and a radiation protection layer attached to the calcium ion layer. The preparation raw materials of the radiation protection layer include the following raw materials by weight: 100 parts of natural latex, 40-60 parts of a radiation protection material dispersion liquid, 0.5-1.0 parts of a hydroxyethyl cellulose solution, and 3.0-9.0 parts of a vulcanization aid; The preparation raw materials of the radiation protection material dispersion liquid include a radiation protection material, casein, a hydroxypropyl methyl cellulose solution, a polyacrylic acid sodium solution, a carboxymethyl cellulose sodium solution, and water, and the mass ratio of the radiation protection material, casein, hydroxypropyl methyl cellulose solution, polyacrylic acid sodium solution, carboxymethyl cellulose sodium solution, and water is 100: (0.2-0.8): (0.3-0.8): (0.1-0.4): (0.2-0.6): 100.

[0007] Optionally, the preparation method of the wearing layer raw material comprises the following steps: providing a deproteinized latex, adjusting the pH to 9-10, sequentially adding sulfur, an accelerator, an active agent, an antioxidant and a polyurethane emulsion, under stirring, heating to 35-45 DEG C, pre-vulcanizing for 20-30 hours, and obtaining the pre-vulcanized wearing layer raw material.

[0008] Optionally, the wearing layer comprises the following raw materials in parts by weight: 100 parts of deproteinized latex, 10-30 parts of polyurethane emulsion, 0.6-1.6 parts of sulfur, 0.6-2.0 parts of accelerator, 0.6-2.0 parts of active agent, and 1.0-2.5 parts of antioxidant.

[0009] Optionally, the preparation raw material of the calcium ion layer comprises a calcium nitrate solution with a concentration of 30-40 wt%.

[0010] Optionally, the preparation method of the anti-radiation layer raw material comprises the following steps: providing the natural latex, adding a vulcanization aid and a hydroxyethyl cellulose solution, stirring at room temperature for 30-60 minutes, adding the anti-radiation material dispersion, stirring at room temperature for 20-30 hours, and obtaining the anti-radiation layer raw material.

[0011] Optionally, the vulcanization aid comprises a stabilizer, sulfur, an accelerator, an active agent, an antioxidant and casein.

[0012] Optionally, the preparation method of the hydroxyethyl cellulose solution comprises the following steps: adding hydroxyethyl cellulose into water, and fully stirring to obtain a hydroxyethyl cellulose solution with a concentration of 0.1-0.3 wt%.

[0013] Optionally, the anti-radiation material comprises at least one of tungsten powder, bismuth powder and tungsten alloy powder.

[0014] Optionally, the concentrations of the hydroxypropyl methyl cellulose solution, the sodium polyacrylate solution and the sodium carboxymethyl cellulose solution are 0.1-0.5 wt%.

[0015] The application further provides a preparation method of the lead-free anti-radiation glove. S10, drying a mold, immersing the dried mold into the pre-vulcanized wearing layer raw material, taking out the mold and drying, and attaching the wearing layer on the mold; S20, immersing the mold with the attached wearing layer in the calcium ion layer raw material according to the step S10, taking out the mold and drying, and attaching the calcium ion layer on the wearing layer; S30, immersing the mold with the attached calcium ion layer in the anti-radiation layer raw material according to the step S20, taking out the mold and drying and demolding, and obtaining the lead-free anti-radiation glove.

[0016] In the technical solution of the present application, when wearing the glove, the wearing layer is attached to the hand, the radiation protection layer faces the working environment, and the calcium ion layer is between the wearing layer and the radiation protection layer. For the radiation protection layer, the technical solution of the present application first mixes the radiation protection material such as tungsten powder with casein, hydroxypropyl methyl cellulose solution, polyacrylic acid sodium solution, carboxymethyl cellulose sodium solution and water phase to prepare a radiation protection material dispersion solution. By fully utilizing the charge shielding, steric hindrance and colloid network construction of casein protein macromolecules, the dispersibility of polyacrylic acid sodium, the skeleton stability of hydroxypropyl methyl cellulose, and the charge barrier property and thickening property of carboxymethyl cellulose sodium, the uniform dispersion of the radiation protection material is realized.

[0017] When preparing the raw material of the radiation protection layer, the natural latex, vulcanization aid and hydroxyethyl cellulose solution are first mixed and fully stirred to make the vulcanization aid and hydroxyethyl cellulose uniformly dispersed in the latex. Then the prepared radiation protection material dispersion solution is added and fully mixed by stirring. The radiation protection material can be well dispersed in the natural latex system, avoiding the agglomeration of particles, which helps to improve the uniformity and consistency of the material, ensures the uniform dispersion of the radiation protection material, and helps to improve the toughness of the glove. Even after long-term storage, phase separation is not easy to occur, which can ensure continuous production, and the prepared radiation protection layer has excellent radiation protection performance.

[0018] For the wearing layer, deproteinized latex is used as the main latex and polyurethane emulsion is used as the auxiliary latex. The two cooperate with each other. Purely using deproteinized latex can lead to unstable dispersion of rubber particles, reduced film forming performance and other problems. The introduction of polyurethane emulsion just makes up for this defect. The polar groups in the molecule can interact with the surface of the rubber particles of deproteinized latex, rebuild the stable interface structure, and restore the process performance of the latex, which reflects the complementary advantages of the two materials in the microstructure. When blending and pre-vulcanizing, the latex particles in the deproteinized latex form a preliminary crosslinked network in the particle inner region, and the water-based polyurethane can be filled in the gap of the crosslinked network, thereby improving the overall performance of the material. The water-based polyurethane molecular chain contains hydrophilic groups (such as hydroxyl, carboxyl, etc.), which can adsorb water vapor molecules through hydrogen bonds, and transfer the moisture from the high humidity side to the low humidity side through the thermal motion of the molecular chain, forming a “adsorption-diffusion-desorption” moisture permeation process. This mechanism allows the glove to be waterproof while allowing water vapor to permeate, avoiding the feeling of stuffiness in the hand after long-term wearing. Pre-vulcanization can make the crosslinking density of the entire latex layer more uniform during the post-vulcanization process, thereby improving the overall performance of the glove. The wearing layer uses deproteinized latex and polyurethane emulsion as the forming latex, which can not only maintain the flexibility of deproteinized latex, but also exert the micro-phase separation and air permeability of polyurethane. The glove prepared by blending the two has a full and soft feel, and wearing is more comfortable. Long-term use will not cause compression to the hand.

[0019] The calcium ion layer is between the wearing layer and the radiation protection layer, so that the wearing layer and the radiation protection layer are closely and stably connected to form a composite layer of the disposable medical glove, which not only meets the comfort of wearing, but also has excellent radiation protection performance and good toughness. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes include A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope of the present application.

[0023] The present application provides a lead-free radiation protection glove, comprising a wearing layer, a calcium ion layer attached to the wearing layer, and a radiation protection layer attached to the calcium ion layer; the preparation raw materials of the radiation protection layer include the following raw materials in parts by weight: natural latex 100 parts, radiation protection material dispersion liquid 40-60 parts, hydroxyethyl cellulose solution 0.5-1.0 parts, vulcanization aid 3.0-9.0 parts; wherein the preparation raw materials of the radiation protection material dispersion liquid include radiation protection material, casein, hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, sodium carboxymethyl cellulose solution and water, and the mass ratio of the radiation protection material, casein, hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, sodium carboxymethyl cellulose solution and water is 100: (0.2-0.8): (0.3-0.8): (0.1-0.4): (0.2-0.6): 100.

[0024] In the technical scheme of the present application, when wearing the glove, the wearing layer is attached to the hand, the radiation protection layer faces the working environment, and the calcium ion layer is between the wearing layer and the radiation protection layer, so that the wearing layer and the radiation protection layer are tightly and stably connected to form a composite layer glove, and the wearing layer ensures the comfort of wearing. For the radiation protection layer, the present application first prepares a uniformly dispersed radiation protection material dispersion liquid from radiation protection material, casein, hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, sodium carboxymethyl cellulose solution and water, and then adds the uniformly dispersed radiation protection material dispersion liquid into the natural latex system, so that the radiation protection material can be well dispersed in the natural latex system, avoiding the agglomeration of particles, helping to improve the uniformity and consistency of the material, ensuring the uniformity of the radiation protection material, helping to improve the toughness of the glove, and preventing phase separation even after long-term storage, ensuring continuous production, and the prepared radiation protection layer has excellent radiation protection performance.

[0025] It should be noted that the vulcanization aid includes 0.3-1.0 parts by weight of stabilizer, 0.6-1.6 parts by weight of sulfur, 0.8-1.6 parts by weight of accelerator, 0.6-2.0 parts by weight of activator, 1.0-2.0 parts by weight of antioxidant and 0.1-0.4 parts by weight of casein. Among them, the stabilizer can be KOH; the accelerator can be zinc diethyl dithiocarbamate, zinc dibutyl dithiocarbamate, or ethyl phenyl dithiocarbamate; the activator can be zinc oxide, and the antioxidant can be antioxidant 616.

[0026] The preparation method of the hydroxyethyl cellulose solution includes: adding hydroxyethyl cellulose into soft water, and stirring thoroughly to prepare a hydroxyethyl cellulose solution with a concentration of 0.1-0.3wt%.

[0027] The radiation protection material includes at least one of tungsten powder, bismuth powder and tungsten alloy powder.

[0028] The concentration of the hydroxypropyl methyl cellulose solution, the sodium polyacrylate solution and the sodium carboxymethyl cellulose solution is 0.1-0.5 wt%, and the corresponding preparation method can refer to the preparation method of the hydroxyethyl cellulose solution with a concentration of 0.1-0.3 wt%.

[0029] Further, the preparation method of the wearing layer raw material comprises the following steps: providing a deproteinized latex, adjusting the pH to 9-10, sequentially adding sulfur, an accelerator, an active agent, an antioxidant and a polyurethane emulsion, under stirring, heating to 35-45℃, and pre-vulcanizing for 20-30 hours to obtain a pre-vulcanized wearing layer raw material.

[0030] By using the above technical solution, the deproteinized latex is used as the main latex, and the polyurethane emulsion is used as the auxiliary latex. In the system, the deproteinized latex is prone to have defects such as poor wetting, uneven film thickness and pinholes during impregnation or coating due to the change of surface energy. The addition of the polyurethane emulsion can reduce the surface tension of the blended system and improve the wettability of the substrate. The polyurethane molecules can form a continuous phase in the drying process, providing a supporting skeleton for the deproteinized latex particles and avoiding the cracking problem of the deproteinized latex during drying. The two cooperate with each other during blending and pre-vulcanization. The latex particles in the deproteinized latex form a preliminary crosslinked network in the particle inner region, and the water-based polyurethane can be filled in the gap of the crosslinked network, thereby improving the overall performance of the material. The water-based polyurethane molecular chain contains hydrophilic groups (such as hydroxyl and carboxyl groups), which can absorb water vapor molecules through hydrogen bonds and transfer the moisture from the high humidity side to the low humidity side through molecular chain thermal motion, forming a "adsorption-diffusion-desorption" moisture permeation process. This mechanism allows the glove to be waterproof while allowing water vapor to permeate, avoiding the feeling of stuffiness on the hands when wearing for a long time. Pre-vulcanization can make the crosslinking density of the entire latex layer more uniform during post-vulcanization, thereby improving the overall performance of the glove. The wearing layer uses deproteinized latex and polyurethane emulsion as the forming latex, which can not only maintain the flexibility of the deproteinized latex, but also exert the micro-phase separation and air permeability characteristics of the polyurethane. The glove prepared by blending the two has a full and soft hand feel, and is more comfortable to wear. Long-term use will not cause compression to the hands.

[0031] Specifically, the wearing layer comprises the following preparation raw materials in parts by weight: deproteinized latex 100 parts, polyurethane emulsion 10-30 parts, sulfur 0.6-1.6 parts, accelerator 0.6-2.0 parts, active agent 0.6-2.0 parts, and antioxidant 1.0-2.5 parts.

[0032] Further, the preparation raw material of the calcium ion layer comprises a calcium nitrate solution with a concentration of 30-40 wt%. Using the calcium nitrate solution with a concentration of 30-40 wt% as the raw material of the calcium ion layer can make the wearing layer and the radiation protection layer be connected together more tightly and stably, forming a composite layer structure glove.

[0033] Further, the preparation method of the radiation protection layer raw material comprises the following steps: providing the natural latex, adding vulcanization aid and hydroxyethyl cellulose solution, stirring for 30-60 min at room temperature, adding the radiation protection material dispersion solution, stirring for 20-30 h at room temperature, and preparing the radiation protection layer raw material.

[0034] By using the above technical scheme, when the radiation protection layer raw material is prepared, the natural latex, vulcanization aid and hydroxyethyl cellulose solution are mixed and fully stirred, so that the vulcanization aid and hydroxyethyl cellulose are uniformly dispersed in the latex, then the prepared radiation protection material dispersion solution is added and stirred for fully mixing, the radiation protection material can be well dispersed in the natural latex system, the particle agglomeration is avoided, which helps to improve the uniformity and consistency of the material, ensures the uniform dispersion of the radiation protection material, helps to improve the toughness of the glove, even if stored for a long time, the phase separation phenomenon is not easy to occur, continuous production can be ensured, and the prepared radiation protection layer has excellent radiation protection performance.

[0035] The application further provides a preparation method of the lead-free radiation protection glove. S10, drying the mold, and immersing the dried mold into the pre-vulcanized wearing layer raw material, taking out the mold and drying, and the wearing layer is attached to the mold. S20, immersing the mold with the attached wearing layer in the calcium ion layer raw material in the step S10, taking out the mold and drying, and the calcium ion layer is attached to the wearing layer. S30, immersing the mold with the attached calcium ion layer in the step S20 into the radiation protection layer raw material, taking out the mold and drying and demolding, and preparing the lead-free radiation protection glove.

[0036] By using the above technical scheme, the calcium ion layer is arranged between the wearing layer and the radiation protection layer, so that the wearing layer and the radiation protection layer are tightly and stably connected to form a composite layer glove, which not only meets the comfort of wearing, but also has excellent radiation protection performance and good toughness.

[0037] The technical scheme of the application will be further described in detail below in combination with specific embodiments, and it should be understood that the following embodiments are only used to explain the application and not to limit the application. Embodiment 1

[0038] A preparation method of a lead-free radiation protection glove comprises the following steps: S10, drying the mold, and immersing the dried mold into the pre-vulcanized wearing layer raw material, the mold stays in the wearing layer raw material for 6 s, taking out the mold, and drying the mold with the attached wearing layer raw material at 65 DEG C for 10 min.

[0039] The preparation method of the pre-vulcanized wearing layer raw material comprises the following steps: taking 100 kg of deproteinized latex (deproteinized latex IRN-410 of Hunan Wanxian New Material Technology Co., Ltd.), adding potassium hydroxide to adjust the pH value to 9.5, and then adding 0.8 kg of sulfur, 1 kg of tetra-sulfur bis-pentylene thiuram, 0.8 kg of zinc oxide, 1 kg of antioxidant 616 and 10 kg of polyurethane emulsion (DSM, type NeoRez R-961) in sequence, stirring at a rotating speed of 100 rpm, and pre-vulcanizing at 40 DEG C for 24 hours to obtain the pre-vulcanized wearing layer raw material.

[0040] S20, the mold with the wearing layer attached in step S10 is immersed in a calcium nitrate solution (dispersion medium is soft water) with a concentration of 35 wt%, the mold stays in the calcium nitrate solution for 7 s, and the mold is taken out, and the mold with the calcium nitrate solution attached is dried at a temperature of 60 DEG C for 10 min, so that the calcium ion layer is attached to the wearing layer.

[0041] S30, the mold with the calcium ion layer attached in step S20 is immersed in the anti-radiation layer raw material, the mold stays in the anti-radiation layer raw material for 11 s, the mold is taken out, the mold with the anti-radiation layer raw material attached is dried at 110 DEG C for 7 min, the mold is immersed in hot water at 80 DEG C, the mold stays in the hot water for 20 s, the mold is taken out, the mold is dried at a temperature of 115 DEG C for 4 min, the mold is immersed in a mold release agent (Foshan Jichen New Material Co., Ltd., water-based coating 880C), the mold stays in the mold release agent for 10 s, the mold is taken out, the mold is dried at 115 DEG C for 15 min, and the mold is demolded to obtain a lead-free anti-radiation glove.

[0042] The preparation method of the anti-radiation layer raw material comprises the following steps: (1) preparing a hydroxyethyl cellulose solution: hydroxyethyl cellulose (Shandong Yinying, HEC-30000) is added to soft water and stirred to obtain a hydroxyethyl cellulose solution with a concentration of 0.2 wt%, which is ready for use; (2) preparing a hydroxypropyl methyl cellulose solution: hydroxypropyl methyl cellulose (Hebei Shuangniu Cellulose Co., Ltd., MH7004 series, viscosity 20.18 w) is added to soft water and stirred to obtain a hydroxyethyl cellulose solution with a concentration of 0.1 wt%, which is ready for use; (3) preparing a sodium polyacrylate solution: sodium polyacrylate (Henan Mingchuang Food Technology Co., Ltd.) solution is added to soft water and stirred to obtain a sodium polyacrylate solution with a concentration of 0.3 wt%, which is ready for use; (4) preparing a sodium carboxymethyl cellulose solution: sodium carboxymethyl cellulose (Shanghai Shengguang Food Chemical Co., Ltd., type FH9) is added to soft water and stirred to obtain a sodium carboxymethyl cellulose solution with a concentration of 0.2 wt%, which is ready for use; (5) Preparation of the radiation protection material dispersion liquid: 100 parts by weight of tungsten powder (average particle size of 2.5 μm), 0.2 parts by weight of casein, 0.4 parts by weight of a hydroxypropyl methylcellulose solution, 0.2 parts by weight of a sodium polyacrylate solution, and 0.6 parts by weight of a sodium carboxymethylcellulose solution were added to 100 parts by weight of soft water, and stirred at a rotation speed of 800 rpm for 3.5 h to prepare the radiation protection material dispersion liquid; (6) Preparation of the radiation protection layer raw material: 100 kg of natural latex (Shanghai Ximei Rubber Products Co., Ltd., brand Huangchunfa, original factory batch number 128A / 67) was added with 0.7 kg of a hydroxyethyl cellulose solution, 0.3 kg of KOH, 0.8 kg of sulfur, 0.8 kg of zinc diethyl dithiocarbamate, 0.6 kg of zinc oxide, 1.0 kg of antioxidant 616, and 0.1 kg of casein, and stirred at a rotation speed of 100 rpm for 0.5 h at room temperature (25 °C), and then 50 kg of the radiation protection material dispersion liquid was added and stirred at a rotation speed of 100 rpm for 24 h at room temperature (25 °C) to prepare the radiation protection layer raw material. Examples 2~3

[0043] Examples 2~3 are based on Example 1, except that in step S10, the temperature for preparing the pre-vulcanized wearing layer raw material is different, and the others are the same as Example 1.

[0044] Example 2: the temperature for pre-vulcanization is 35 °C.

[0045] Example 3: the temperature for pre-vulcanization is 45 °C. Examples 4~5

[0046] Examples 4~5 are based on Example 1, except that in step S10, the mass amount of the polyurethane emulsion is different, and the others are the same as Example 1.

[0047] Example 4: 20 kg of polyurethane emulsion.

[0048] Example 5: 30 kg of polyurethane emulsion. Examples 6~7

[0049] Examples 6~7 are based on Example 1, except that the concentration of the calcium nitrate solution is different, and the others are the same as Example 1.

[0050] Example 6: the concentration of the calcium nitrate solution is 30 wt%.

[0051] Example 7: the concentration of the calcium nitrate solution is 40 wt%. Examples 8~9

[0052] Examples 8-9 are based on Example 1, except that the amounts of the ingredients used to prepare the dispersion of the radiation-protective material are different, and otherwise are the same as in Example 1.

[0053] Example 8: 100 parts by weight of tungsten powder, 0.5 parts by weight of casein, 0.6 parts by weight of a solution of hydroxypropyl methylcellulose, 0.3 parts by weight of a solution of sodium polyacrylate, 0.4 parts by weight of a solution of sodium carboxymethylcellulose, 100 parts by weight of soft water.

[0054] Example 9: 100 parts by weight of tungsten powder, 0.8 parts by weight of casein, 0.8 parts by weight of a solution of hydroxypropyl methylcellulose, 0.4 parts by weight of a solution of sodium polyacrylate, 0.2 parts by weight of a solution of sodium carboxymethylcellulose, 100 parts by weight of soft water. Examples 10-11

[0055] Examples 10-11 are based on Example 1, except that the amounts of the ingredients used to prepare the dispersion of the radiation-protective material are different, and otherwise are the same as in Example 1.

[0056] Example 10: the amount of the dispersion of the radiation-protective material is 40 kg by mass.

[0057] Example 11: the amount of the dispersion of the radiation-protective material is 60 kg by mass. Comparative Example 1

[0058] This comparative example is based on Example 1, except that in step S10, the mold is immersed in the unvulcanized underlayer material, and specifically, the underlayer material is prepared by taking 100 kg of deproteinized latex, adding potassium hydroxide to adjust the pH to 9.5, and then adding 0.8 kg of sulfur, 1 kg of tetraalkylthiuram disulfide, 0.8 kg of zinc oxide, 1 kg of antioxidant 616, and 5 kg of polyurethane emulsion, and stirring at a speed of 100 rpm for 24 hours at room temperature (25°C). Comparative Example 2

[0059] This comparative example is based on Example 1, except that in step S30, the components are mixed directly to prepare the radiation-protective layer material, and specifically, the radiation-protective layer material is prepared by taking 100 kg of natural latex, adding 0.7 kg of hydroxyethyl cellulose solution, 0.3 kg of KOH, 0.8 kg of sulfur, 0.8 kg of zinc diethyl dithiocarbamate, 0.6 kg of zinc oxide, 1.0 kg of antioxidant 616, 0.1 kg of casein, and 50 kg of the dispersion of the radiation-protective material, and stirring at a speed of 100 rpm for 24 hours at room temperature (25°C). Performance Test

[0060] The gloves prepared in Examples 1-11 and Comparative Examples 1-2 were subjected to radiation resistance performance test and tear strength test, and the test results are shown in Table 1 below.

[0061] The test method of the radiation resistance performance refers to GBZ / T 147-2002, and the test method of the tear strength refers to GB / T7543-2020 IS010282.

[0062] Table 1 Radiation resistance performance and tear strength of gloves Test item Lead equivalent (mm Pb) Tear strength (N) Example 1 0.026 27.0 Example 2 0.026 24.5 Example 3 0.026 28.5 Example 4 0.026 29.0 Example 5 0.026 28.0 Example 6 0.025 26.0 Example 7 0.027 27.5 Example 8 0.026 27.5 Example 9 0.026 25.5 Example 10 0.025 25.0 Example 11 0.029 26.0 Comparative Example 1 0.026 22.5 Comparative Example 2 0.024 25.5 As can be seen from the test results in Table 1, the calcium ion layer is arranged between the wearing layer and the radiation resistance layer in the present application, so that the wearing layer and the radiation resistance layer are closely and stably connected to form a composite layer of the one-time medical glove, which not only meets the comfort of wearing, but also has excellent radiation resistance performance and good toughness.

[0063] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the patent protection scope of the present application.

Claims

1. A lead-free radiation protection glove, characterized by, The wearable layer, the calcium ion layer attached to the wearable layer, and the anti-radiation layer attached to the calcium ion layer are included. The anti-radiation layer raw material preparation method comprises the following steps: providing the natural latex, adding the vulcanization aid and the hydroxyethyl cellulose solution, stirring at room temperature for 30-60 min, adding the anti-radiation material dispersion liquid, stirring at room temperature for 20-30 h, and preparing the anti-radiation layer raw material. The anti-radiation material dispersion liquid 40-60 parts, the hydroxyethyl cellulose solution 0.5-1.0 parts, and the vulcanization aid 3.0-9.0 parts are included. The anti-radiation material dispersion liquid comprises the anti-radiation material, casein, hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, sodium carboxymethyl cellulose solution, and water, and the mass ratio of the anti-radiation material, casein, hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, sodium carboxymethyl cellulose solution, and water is 100: (0.2-0.8): (0.3-0.8): (0.1-0.4): (0.2-0.6):

100.

2. The lead-free radiation shielding glove of claim 1, wherein, The wearable layer raw material preparation method comprises the following steps: providing the deproteinized latex, adjusting the pH to 9-10, sequentially adding sulfur, accelerator, active agent, antioxidant, and polyurethane emulsion, heating to 35-45℃ under stirring, and pre-vulcanizing for 20-30 h to obtain the pre-vulcanized wearable layer raw material.

3. The lead-free radiation shielding glove of claim 2, wherein, The wearable layer raw material preparation method comprises the following steps: providing the deproteinized latex, adjusting the pH to 9-10, sequentially adding sulfur, accelerator, active agent, antioxidant, and polyurethane emulsion, heating to 35-45℃ under stirring, and pre-vulcanizing for 20-30 h to obtain the pre-vulcanized wearable layer raw material.

4. The lead-free radiation shielding glove of claim 1, wherein, The calcium ion layer raw material comprises a calcium nitrate solution with a concentration of 30-40 wt%.

5. The lead-free radiation shielding glove of claim 1, wherein, The anti-radiation layer raw material preparation method comprises the following steps: providing the natural latex, adding the vulcanization aid and the hydroxyethyl cellulose solution, stirring at room temperature for 30-60 min, adding the anti-radiation material dispersion liquid, stirring at room temperature for 20-30 h, and preparing the anti-radiation layer raw material.

6. The lead-free radiation shielding glove of claim 1, wherein, The vulcanization aid comprises stabilizer, sulfur, accelerator, active agent, antioxidant, and casein.

7. The lead-free radiation shielding glove of claim 1, wherein, The hydroxyethyl cellulose solution preparation method comprises the following steps: adding hydroxyethyl cellulose into water, and fully stirring to obtain a hydroxyethyl cellulose solution with a concentration of 0.1-0.3 wt%.

8. The lead-free radiation shielding glove of claim 1, wherein, The anti-radiation material comprises at least one of tungsten powder, bismuth powder, and tungsten alloy powder.

9. The lead-free radiation shielding glove of claim 1, wherein, The hydroxypropyl methyl cellulose solution, sodium polyacrylate solution, and sodium carboxymethyl cellulose solution have a concentration of 0.1-0.5 wt%.

10. A method of producing a lead-free radiation protection glove, characterized by, The method comprises the following steps: S10, drying the mold, immersing the dried mold into the pre-vulcanized wearable layer raw material, taking out the mold and drying, and attaching the wearable layer on the mold; S20, immersing the mold with the wearable layer attached in the calcium ion layer raw material in step S10, taking out the mold and drying, and attaching the calcium ion layer on the wearable layer; S30, immersing the mold with the calcium ion layer attached in step S20 into the anti-radiation layer raw material, taking out the mold and drying and demolding, and obtaining the lead-free anti-radiation glove.