CN111358094A - Disposable butyronitrile gloves with sweat accumulation preventing function and preparation method thereof - Google Patents
Disposable butyronitrile gloves with sweat accumulation preventing function and preparation method thereof Download PDFInfo
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- CN111358094A CN111358094A CN202010350658.0A CN202010350658A CN111358094A CN 111358094 A CN111358094 A CN 111358094A CN 202010350658 A CN202010350658 A CN 202010350658A CN 111358094 A CN111358094 A CN 111358094A
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0006—Gloves made of several layers of material
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0079—Plastic or rubber gloves with channels for conveying fluids
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/04—Appliances for making gloves; Measuring devices for glove-making
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0064—Producing wearing apparel
- B29D99/0067—Gloves
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L13/00—Compositions of rubbers containing carboxyl groups
- C08L13/02—Latex
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/50—Synthetic resins or rubbers
- A41D2500/52—Synthetic resins or rubbers in sheet form
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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
Abstract
The invention discloses a disposable butyronitrile glove with a sweat accumulation prevention function, which is provided with a sweat and water vapor discharge structure and consists of three layers of adhesive films, namely an inner adhesive film, a middle adhesive film and an outer adhesive film. The latex for generating the adhesive film mainly comprises nitrile rubber and related auxiliary materials thereof. Polylysine and dopa are added to the inner-layer glue film, nano iron powder is added to the middle-layer glue film, and nano manganese dioxide is added to the outer-layer glue film. The butyronitrile gloves are also provided with an acid-base indicating strip and an organic solvent indicating strip. The invention also discloses a preparation method of the disposable butyronitrile gloves. The disposable butyronitrile gloves prepared by the preparation method can reduce or avoid accumulation of hand sweat and water vapor, relieve hand itching in the wearing process, prompt damage risks, slow down the influence of ozone on the strength of the adhesive film, and indicate whether pollutants such as acid, alkali, organic solvents and the like are infected or not.
Description
Technical Field
The invention belongs to the field of safety protection, relates to a rubber glove for hand protection, and particularly relates to a disposable butyronitrile glove with a sweat accumulation prevention function and a preparation method thereof.
Background
The butyronitrile gloves are mainly processed by butyronitrile rubber, and are indispensable protective articles for protecting hands and preventing cross infection in scientific research industries of medical treatment, medicine and health, hairdressing and beauty, food processing, chemical engineering biology and the like. The nitrile rubber does not contain protein, so that anaphylactic reaction can not be caused, and the nitrile rubber has the performances of static resistance, ageing resistance and oil resistance, is designed according to the hand shape of a human body, has higher flexibility, better tensile property and puncture resistance, higher tensile strength and better wear resistance, and is widely used.
However, nitrile gloves also present certain problems in use. Due to the air impermeability of the nitrile rubber, sweat, water vapor and the like generated by hands cannot be discharged in time when the gloves are worn for a long time, the skin of the hands is soaked and whitened, and the accuracy of operation is affected; due to long-time wearing, the hand itch cannot be effectively treated; because the nitrile rubber gloves are thin, when the gloves are punctured or broken, the skin of the hands can be completely exposed in a dangerous environment, and the gloves are not beneficial to the effective protection of the hands; the nitrile rubber is easily affected by corrosive gases such as ozone and the like, so that the strength of the nitrile rubber is reduced, and the protection effect is poor; the butyronitrile gloves have no pollutant contact marks on the outer layer, cross contamination between a contaminated part and a clean part is easily caused, and effective protection is not facilitated.
Disclosure of Invention
The invention aims to provide a disposable butyronitrile glove with a sweat accumulation prevention function and a preparation method thereof, and the butyronitrile glove and the preparation method thereof can timely discharge sweat and water vapor generated by hands, relieve hand itching, prompt the danger of puncturing or breaking of the glove, improve ozone resistance and mark the possibility of contamination of pollutants.
In order to solve the above technical problems, the present invention provides a disposable nitrile glove having a sweat accumulation prevention function, which is provided with sweat and a water vapor discharge structure 2-1-2 thereof. As shown in fig. 1, the sweat and water vapor discharge structure 2-1-2 is located on the inner surface of the disposable butyronitrile glove and is a series of strip-shaped protrusions, the cross section of each strip-shaped protrusion is a semiellipse, as shown in the partial enlarged view of the cross section of the wrist part of fig. 1, the major diameter of each semiellipse is 0.58 mm, the minor diameter of each semiellipse is 0.46 mm, and the minor diameter of each semiellipse is perpendicular to the surface of the adhesive film.
The sweat and the water vapor discharging structure 2-1-2 are distributed on the inner surface of the disposable butyronitrile gloves, as shown in fig. 2, fig. 2 is a schematic diagram of the disposable butyronitrile gloves after being cut along a horizontal plane, 6 sweat and water vapor discharging structures 2-1-2 are arranged at each finger part, 30 sweat and water vapor discharging structures 2-1-2 are arranged on the inner surface of each disposable butyronitrile glove, and each sweat and water vapor discharging structure 2-1-2 extends to the wrist part, so that sweat and water vapor generated by the hand can be discharged to the outside of the glove. The sweat and the water vapor discharging structures 2-1-2 are arranged at equal intervals on the section perpendicular to the middle finger direction, namely, the intervals of all the sweat and the water vapor discharging structures 2-1-2 on a certain section along the inner surface of the disposable butyronitrile gloves are equal.
The sweat and the water vapor discharging structure 2-1-2 can form 60 microchannels between the skin of the hand of the wearer and the inner surface of the disposable butyronitrile gloves, the microchannels are respectively positioned at two sides of each sweat and water vapor discharging structure 2-1-2, and the microchannels are composed of the sweat and water vapor discharging structure 2-1-2, the inner surface of the butyronitrile gloves and the skin of the hand of the wearer. After wearing the disposable nitrile gloves, various actions of the hands, such as stretching fingers, grasping articles and the like, can enable some parts of the micro-channels to be in an expanded state, such as the section to be enlarged, and other parts to be in a contracted state, such as the section to be reduced; it is also possible to make the same portion of the microchannel in an expanded state at one time and in a contracted state at another time. The change state of the micro-channels is similar to the peristalsis of intestinal tracts, and the driving force for discharging sweat and water vapor thereof can be generated, so that the accumulation of the sweat and the water vapor thereof between the disposable butyronitrile gloves and the hand skin can be reduced or even avoided, and the use experience of a wearer is greatly improved.
As shown in figure 5, the disposable butyronitrile gloves with the function of preventing sweat accumulation are composed of three layers of adhesive films, wherein the three layers of adhesive films are an inner adhesive film 2-1, a middle adhesive film 2-2 and an outer adhesive film 2-3 respectively.
The butyronitrile latex for generating the inner layer adhesive film 2-1 is prepared from the following raw materials in parts by weight: 100 parts of nitrile rubber emulsion, 0.8 part of potassium hydroxide, 0.008 part of tween 80 (surfactant), 0.083 part of n-heptanol (defoaming agent), 1.0 part of zinc oxide, 0.38 part of sulfur, 2.9 parts of titanium dioxide, 0.07 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 260 parts of water. The pH value of the obtained latex is 7.1-7.6.
Further preferably, the butyronitrile latex for generating the inner glue film 2-1 also comprises polylysine and dihydroxyphenylalanine. The polylysine is composed of 10-13 lysine residues, and the adding amount is 0.008 weight part. The two hydroxyl groups of the dihydroxyphenylalanine are positioned at the 3 and 4 positions of a benzene ring, also called dopa, the molecular weight is 197.19, and the addition amount is 0.003 weight part.
The inventor obtains the latex raw material ratio by changing the raw material ratio of the butyronitrile latex for generating the inner glue film 2-1, so that the added polylysine and dopa can normally play a role in relieving itching.
The butyronitrile latex for generating the middle layer adhesive film 2-2 is prepared from the following raw materials in parts by weight: 100 parts of nitrile rubber emulsion, 1.1 parts of potassium hydroxide, 0.013 part of tween 80 (surfactant), 0.091 part of n-heptanol (defoamer), 0.9 part of zinc oxide, 0.59 part of sulfur, 1.8 parts of titanium dioxide, 0.11 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 230 parts of water.
The butyronitrile latex for generating the outer-layer adhesive film 2-3 is prepared from the following raw materials in parts by weight: 100 parts of nitrile butadiene rubber emulsion, 1.4 parts of sodium hydroxide, 0.011 part of tween 80 (surfactant), 0.096 part of n-heptanol (defoaming agent), 1.8 parts of zinc oxide, 0.61 part of sulfur, 2.3 parts of titanium dioxide, 0.14 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 196 parts of water.
The nitrile-butadiene rubber emulsion is modified carboxyl nitrile-butadiene rubber emulsion.
The modified carboxyl nitrile rubber emulsion is modified by the following method: adding 9.7 parts by weight of copper phosphate, 10 parts by weight of sodium methylene dinaphthalenesulfonate, 1.7 parts by weight of malic acid, 0.093 part by weight of benzethonium chloride, 1.8 parts by weight of citric acid and 1.08 parts by weight of D-lactic acid into 100 parts by weight of the carboxylated nitrile rubber emulsion, and uniformly mixing.
The properties of the carboxylated nitrile rubber emulsion are as follows: the solid content is 40 percent, the pH value is 8.1 to 8.3, the viscosity is less than or equal to 88 mPa.S, the surface tension is more than or equal to 41mN/m, the density is 0.91 to 0.967g/cm3, and the particle size is 110-122 nm.
The carboxyl nitrile rubber emulsion is prepared from the following raw materials in parts by weight: 78 parts of butadiene, 51 parts of acrylonitrile, 5.66 parts of acrylic acid, 6.3 parts of methyl acrylate, 0.28 part of sodium carbonate, 0.29 part of sodium chloride, 1.6 parts of potassium dodecyl sulfonate, 4.1 parts of polyoxyethylene stearate, 0.93 part of diallyl phthalate, 0.6 part of potassium persulfate, 3.1 parts of ethylene glycol diethyl acrylate, 3.6 parts of dimethyl maleate, 3.8 parts of vinyltriethoxysilane, 3.9 parts of isophorone diamine, 3.3 parts of microcrystalline paraffin, 1.2 parts of propyl stearate, 3.8 parts of tin methyl mercaptide, 1.5 parts of diphenylmethane diisocyanate, 3.8 parts of epoxy ethyl oleate and 192 parts of deionized water.
The preparation method of the carboxyl nitrile rubber emulsion comprises the following steps: step 1): adding acrylonitrile, acrylic acid, methyl acrylate, potassium dodecyl sulfonate, polyoxyethylene stearate, potassium persulfate and deionized water into a reaction kettle, uniformly mixing, then filling nitrogen, vacuumizing, adding butadiene, mixing, adjusting the temperature to 27 ℃, carrying out heat preservation reaction for 7 hours, then adding diallyl phthalate, sodium carbonate and sodium chloride, continuously heating to 63 ℃, carrying out heat preservation reaction for 3.6 hours, and stopping the reaction when the conversion rate reaches more than 98% to obtain the butyronitrile latex emulsion; step 2): adding ethylene glycol diethyl acrylate, dimethyl maleate, vinyl triethoxysilane, isophorone diamine, microcrystalline paraffin and propyl stearate into a dispersion stirring tank, adding a proper amount of deionized water, dispersing and stirring for 72 minutes, and then circularly grinding the dispersion liquid for 5 hours until the particle size of powder in the dispersion liquid is less than or equal to 4 micrometers to obtain the butyronitrile latex auxiliary material; step 3): mixing the butyronitrile latex emulsion and the butyronitrile latex auxiliary material, adding raw materials such as methyl tin mercaptide, diphenylmethane diisocyanate, bis (2-dimethylaminoethyl) ether, epoxy ethyl oleate and the like, and stirring for 23 minutes at 86 ℃ to obtain the carboxyl butyronitrile rubber latex.
The polylysine containing 10-13 lysine residues and the dopa have the effect of relieving itching. Polylysine has positive charge under the pH condition of the butyronitrile latex which generates the inner layer adhesive film 2-1, dopa can interact with peripheral nerves on the superficial surface of skin, and itching can be effectively relieved. The itching relieving principle is similar to that of mussel mucin.
The polylysine containing 10-13 lysine residues is a commercial polylysine.
Further preferably, in the process of generating the inner-layer adhesive film 2-1, by applying an electrostatic field, polylysine with positive charges is enriched on the inner side of the inner-layer adhesive film 2-1, so that more polylysine can be accumulated on the inner side of the inner-layer adhesive film 2-1 close to the skin of the hand, and the itching relieving effect of the polylysine can be better exerted.
The electrostatic field is realized by arranging 316 stainless steel 1-2 inside the disposable butyronitrile glove hand mold. The basic structure of the hand model is shown in fig. 6, the outer layer of the hand model is a ceramic insulating layer 1-1 with the thickness of 1.5 mm, and 316 stainless steel 1-2 with the thickness of 3.0 mm is tightly attached to the outer layer of the hand model, namely the ceramic insulating layer 1-1. The container material of the butyronitrile latex for generating the inner-layer adhesive film 2-1 is nodular cast iron. In the process of preparing the inner-layer adhesive film 2-1, the negative pole of a direct-current power supply is connected with the stainless steel of the hand mold, the positive pole of the direct-current power supply is connected with the nodular cast iron container, the voltage of the direct-current power supply is set to 80V, so that an electrostatic field with certain intensity is formed on the surface of the hand mold, the polylysine with positive charges can move towards the inner side of the inner-layer adhesive film 2-1 before the adhesive film is completely solidified, the inner-layer adhesive film layer 2-1-1 rich in polylysine is formed, and the polylysine concentration on the inner side of the inner-layer adhesive film is obviously higher than other parts of the inner-layer adhesive film 2-1, as shown in the adhesive film structure.
Further preferably, the butyronitrile latex for generating the middle layer adhesive film 2-2 further comprises nano iron powder, wherein the nano iron powder is prepared by a chemical method, is spherical in shape, has an average diameter of 30-50 nanometers, and is added in an amount of 0.008 part by weight. The nanometer iron powder can quickly turn red in the air, the reduced iron and the oxygen in the air generate oxidation-reduction reaction to generate red iron oxide, the glove can be shown to be worn to the middle layer adhesive film 2-2, the possibility of complete abrasion is very high, a user can be prompted to replace the glove in time, or other necessary protection measures are taken to prevent the hands skin from being completely exposed in the dangerous environment due to complete damage of the butyronitrile gloves, and the protection effect is improved.
The nano iron powder is a commercial nano iron powder.
The inventor obtains the latex raw material ratio by changing the raw material ratio of the butyronitrile latex for generating the middle layer adhesive film 2-2, so that the added nano iron powder can quickly react with oxygen in the nano iron powder when being exposed to air.
In order to prevent the added nano iron powder from being oxidized in advance by oxygen in the environment in the process of generating the middle layer adhesive film 2-2, the preparation process of the butyronitrile latex for generating the middle layer adhesive film 2-2 and the generation process of the middle layer adhesive film 2-2 are both carried out in the atmosphere of inert gas, and the inert gas is air which is completely deprived of oxygen.
Further preferably, the butyronitrile latex for generating the outer glue film 2-3 further comprises nano manganese dioxide, the nano manganese dioxide is microspherical, the average particle size of the nano manganese dioxide is 60-70 nanometers, and the addition amount of the nano manganese dioxide is 0.007 parts by weight. The nano manganese dioxide can decompose trace ozone existing in the using environment of the nitrile gloves into oxygen, for example, ozone generated by ultraviolet irradiation of disinfection and sterilization can convert ozone molecules with strong oxidizability into oxygen molecules with weak oxidizability, so that the aging process of nitrile glove rubber caused by ozone can be delayed, the service life of the nitrile gloves is prolonged, and the protection effect is improved.
The nano manganese dioxide is commercial nano manganese dioxide.
The inventor obtains the latex raw material ratio by changing the raw material ratio of the butyronitrile latex for generating the outer rubber film 2-3, so that the added nano manganese dioxide can better play the function of catalyzing ozonolysis.
Further preferably, an acid-base indicating strip 2-4 is arranged outside the outer glue film 2-3 of the butyronitrile gloves. The schematic structural diagram of the section of the glove adhesive film at the position provided with the acid-base indicating strip 2-4 is shown in fig. 8, and the schematic structural diagram of the section of the glove adhesive film at the position provided with the acid-base indicating strip 2-4 externally added with an electrostatic field when the inner layer adhesive film 2-1 is generated is shown in fig. 10.
The latex for generating the acid-base indicating strip 2-4 is prepared from the following raw materials in parts by weight: 100 parts of nitrile butadiene rubber emulsion, 1.3 parts of sodium hydroxide, 0.010 part of tween 80, 0.092 part of n-heptanol, 1.9 parts of zinc oxide, 0.62 part of sulfur, 2.1 parts of titanium dioxide, 0.15 part of zinc diethyldithiocarbamate, 60 parts of litmus aqueous solution, the mass concentration of the litmus aqueous solution is 1.1 percent, and 310 parts of water. The pH value of the obtained latex is 7.9-8.1.
Litmus is a commonly used acid-base indicator, and exhibits red color under acidic conditions and blue color under alkaline conditions. When the butyronitrile gloves are worn for relevant operations, acidic substances such as hydrochloric acid, sulfuric acid, acetic acid and the like are contacted, hydrogen ions in the acidic substances react with litmus on the surfaces of the acid-base indication strips 2-4, and red spots appear; when the butyronitrile gloves are worn for relevant operations, basic substances, such as sodium hydroxide, potassium hydroxide, ammonia water and the like, are contacted, hydroxide ions in the basic substances react with litmus on the surfaces of the acid-base indicating strips 2-4, and blue spots are generated. Therefore, the fact that the butyronitrile gloves are contacted with acid-base substances can be indicated, namely, the surfaces of the butyronitrile gloves are polluted by the acid-base substances, a wearer can avoid wearing the polluted butyronitrile gloves again to touch a cleaning position, and the pollution area is guaranteed not to be diffused.
Further preferably, an organic solvent indicating strip 2-5 is arranged outside the outer glue film 2-3 of the butyronitrile gloves. The schematic view of the cross-sectional structure of the glove film at the position where the organic solvent indicating strip 2-5 is disposed is shown in FIG. 9, and the schematic view of the cross-sectional structure of the glove film at the position where the organic solvent indicating strip 2-5 is disposed is shown in FIG. 11 when the inner layer film 2-1 is generated by applying an electrostatic field.
The latex for generating the organic solvent indicator strips 2-5 is prepared from the following raw materials in parts by weight: 100 parts of natural rubber emulsion, 1.2 parts of sodium hydroxide, 0.014 part of tween 80, 0.095 part of n-heptanol, 1.8 parts of zinc oxide, 0.63 part of sulfur, 2.2 parts of titanium dioxide, 0.18 part of zinc diethyldithiocarbamate and 390 parts of water.
After the natural rubber is contacted with the organic solvent, the color of the natural rubber is changed from light yellow to dark brown, so that the organic solvent indicating strip 2-5 taking the natural rubber as the main raw material can indicate the condition that the butyronitrile gloves are polluted by the organic solvent, and the condition that the organic solvent pollution is diffused unconsciously by a wearer is avoided.
The distribution of the acid-base indicating strips 2-4 and the organic solvent indicating strips 2-5 on the surface of the butyronitrile gloves is shown in figure 12, the right figure is a schematic front view of the butyronitrile gloves, and the left figure is a schematic back view of the butyronitrile gloves. The widths of the acid-base indicating strips 2-4 and the organic solvent indicating strips 2-5 are both 9 mm, and 2 strips are respectively arranged and positioned in the middle of the butyronitrile gloves. The interval between two acid-base indicating strips 2-4 is 27 mm, the interval between two organic solvent indicating strips 2-5 is also 27 mm, and the interval between two adjacent indicating strips is 9 mm. The length directions of the acid-base indicating strips 2-4 and the organic solvent indicating strips 2-5 are perpendicular to the direction of fingers in the glove.
In order to solve the technical problems, the invention also provides a preparation method of the disposable butyronitrile gloves with the sweat accumulation prevention function, and the preparation method comprises the following steps:
step 1) preparing butadiene-acrylonitrile latex for dipping for generating an inner-layer adhesive film 2-1: preparing and mixing the materials according to the weight parts, clockwise stirring for 72 minutes at the stirring speed of 88 revolutions per minute, and grinding for 5 times by using a colloid mill;
step 2) preparing the butadiene-acrylonitrile latex for dipping for generating the middle layer adhesive film 2-2: preparing and mixing the materials according to the weight parts, stirring the materials for 61 minutes in a counter-clockwise mode, wherein the stirring speed is 96 revolutions per minute, and grinding the materials for 4 times by using a paint grinder;
step 3) preparing the butadiene-acrylonitrile latex for dipping for generating the outer-layer adhesive film 2-3: preparing and mixing the raw materials according to the weight part, clockwise stirring for 46 minutes at the stirring speed of 116 revolutions per minute, and grinding for 3 times by using a paint grinder;
step 4), hand mold cleaning: washing the hand mold with dilute sulfuric acid in sequence, wherein the pH value of the dilute sulfuric acid is 2.2-2.7, washing the hand mold with alkali by using sodium hydroxide solution, and the pH value of the sodium hydroxide solution is 10.1-10.7; hot water at 83-86 ℃ for cleaning, and the water supplement amount is 5000-6000 liters per hour;
step 5), soaking a coagulant: soaking the cleaned hand model in coagulant at 51 deg.C for 62 s, and oven drying at 120 deg.C for 130 s, wherein the coagulant is 12% calcium chloride solution;
step 6), generating an inner-layer adhesive film 2-1: dipping the hand mould obtained in the step 5) in the latex obtained in the step 1) at the temperature of 27 ℃, wherein the dipping time is 22s, the stirring speed of the latex is 13 r/min, and then drying for 17 min at the temperature of 98 ℃;
step 7), generating a middle-layer adhesive film 2-2: dipping the hand mold with the inner layer adhesive film 2-1 in the step 6) in the latex obtained in the step 2) at 29 ℃, wherein the dipping time is 21s, the stirring speed of the latex is 15 r/min, and then drying for 10 min at 100 ℃;
step 8) generating an outer-layer adhesive film 2-3: dipping the hand mould with the inner layer adhesive film 2-1 and the middle layer adhesive film 2-2 in the step 7) in the latex obtained in the step 3) at 33 ℃, wherein the dipping time is 30s, the stirring speed of the latex is 28 r/min, and then drying for 20 min at 113 ℃;
step 9), chlorination treatment, high-temperature drying, edge curling and demolding: and (3) chloridizing the adhesive film which is subjected to the step 8), drying for 31 minutes at 133 ℃, curling and demolding to obtain the butyronitrile gloves.
The preparation method uses a hand model capable of generating sweat and water vapor thereof to discharge the structure 2-1-2. The surface of the hand mold capable of generating sweat and water vapor of the sweat and the water vapor discharging structure 2-1-2 is provided with strip-shaped depressions 1-3, as shown in figure 3, the cross sections of the strip-shaped depressions 1-3 are semi-ellipses, as shown in a partial enlarged view of the cross section of a finger part of figure 3, the major diameter of the semi-ellipse is 0.58 mm, the minor diameter of the semi-ellipse is 0.46 mm, and the minor diameter of the semi-ellipse is vertical to the surface of the adhesive film.
The distribution of the strip-shaped depressions 1-3 on the surface of the hand mold is shown in fig. 4, the right drawing of fig. 4 is a front view of the hand mold capable of generating sweat and its water vapor vent structure 2-1-2, and the left drawing is a rear view. Each finger part is provided with 6 strip-shaped depressions 1-3, the surface of the hand model is provided with 30 strip-shaped depressions 1-3, and each strip-shaped depression 1-3 extends to the wrist part of the hand model. The strip-shaped depressions 1-3 are equidistantly arranged on the section perpendicular to the middle finger direction, namely, the intervals of the surfaces of all the strip-shaped depressions 1-3 on a certain section are equal.
Further preferably, the preparation method uses a hand model capable of generating an electrostatic field and a direct current power supply, the basic structure of the hand model capable of generating the electrostatic field is shown in fig. 6, the outer layer of the hand model is a ceramic insulating layer 1-1 with the thickness of 1.5 mm, and 316 stainless steel 1-2 with the thickness of 3.0 mm is tightly attached to the ceramic insulating layer 1-1 of the outer layer of the hand model. The container material of the butyronitrile latex for generating the inner-layer adhesive film 2-1 is nodular cast iron. The negative pole of the direct current power supply is connected with the stainless steel of the hand mold, and the positive pole of the direct current power supply is connected with the nodular cast iron container. The dc power supply is a commercially available commercial dc power supply.
In the step 6), the voltage of the direct current power supply is set to 80V, so that an electrostatic field with a certain intensity is formed on the surface of the hand mold, and the polylysine with positive charges can move towards the inner side of the inner-layer adhesive film 2-1 before the adhesive film is completely solidified to form the inner-layer adhesive film layer 2-1-1 rich in polylysine, as shown in the adhesive film structure shown in fig. 7, the polylysine concentration at the inner side of the inner-layer adhesive film is obviously higher than other parts of the inner-layer adhesive film 2-1.
Further preferably, nanometer iron powder is added in the step 2), the nanometer iron powder is spherical, the average diameter of the nanometer iron powder is 30-50 nanometers, and the adding amount of the nanometer iron powder is 0.008 part by weight. The step 2) and the step 6) are carried out under the protection of air with complete oxygen removal.
Further preferably, nano manganese dioxide is added in the step 3), the nano manganese dioxide is microspherical, the average particle size of the nano manganese dioxide is 60-70 nanometers, and the addition amount of the nano manganese dioxide is 0.007 parts.
Further preferably, the preparation method further comprises a step of preparing the latex for generating the acid-base indicator strips 2-4 after the step 3), preparing and mixing the latex according to the parts by weight, stirring the latex clockwise for 28 minutes at a stirring speed of 120 revolutions per minute, and grinding the latex 3 times by using a colloid mill.
Further preferably, the preparation method further comprises a step of preparing the latex generating the organic solvent indicator strips 2-5 after the step 3), preparing and mixing the latex according to the weight parts, stirring the latex anticlockwise for 33 minutes at a stirring speed of 90 revolutions per minute, and grinding the latex by using a colloid mill for 2 times.
Further preferably, the preparation method further comprises a step of generating an acid-base indicating strip 2-4 and an organic solvent indicating strip 2-5 after the step 8), and the latex generating the acid-base indicating strip 2-4 and the latex generating the organic solvent indicating strip 2-5 are respectively sprayed to the outer adhesive film 2-3 by using a spray gun, wherein the spraying rate of the spray gun is 1.2 ml/min. The spraying shape is strip, the width is 9 mm, the interval between the acid-base indicating strip 2-4 and the organic solvent indicating strip 2-5 is 9 mm, the acid-base indicating strip 2-4 and the organic solvent indicating strip 2-5 are respectively provided with 2 strips, the strips are positioned in the middle of the butyronitrile gloves, spray guns are respectively arranged at corresponding positions, the hand mold is rotated in the spraying process, the hand mold is rotated for 1 circle in the spraying process, the rotating speed of the hand mold is 3.6 revolutions per minute, and the strips form a ring shape on the outer layer of the butyronitrile gloves on the plane vertical to the finger direction, as shown in fig. 12.
Drawings
FIG. 1 is a schematic view and a partial enlarged view of a disposable butyronitrile glove with a sweat and vapor exhausting structure;
FIG. 2 is a schematic cross-sectional view of a disposable nitrile glove having a sweat and vapor venting structure according to the present invention;
FIG. 3 is a schematic diagram and a partial enlarged view of a hand mold capable of generating sweat and discharging water vapor;
FIG. 4 is a schematic representation of the surface of a hand mold capable of producing sweat and its vapor venting structures of the present invention, the right view being a front view and the left view being a rear view;
FIG. 5 is a schematic view of the structure of the disposable butyronitrile glove adhesive film with sweat accumulation prevention function of the present invention;
FIG. 6 is a schematic cross-sectional view of a hand mold capable of generating an electrostatic field according to the present invention;
FIG. 7 is a schematic structural diagram of a disposable nitrile glove adhesive film with sweat accumulation prevention function prepared under the condition of electrostatic field according to the present invention;
FIG. 8 is a schematic diagram of the structure of the adhesive film of the acid-base indicator strip sprayed on the disposable butyronitrile gloves with sweat accumulation prevention function of the present invention;
FIG. 9 is a schematic diagram of the structure of the adhesive film of the indicator strip portion of the disposable butyronitrile glove with sweat accumulation prevention function sprayed with organic solvent according to the present invention;
FIG. 10 is a schematic diagram of the structure of the adhesive film of the spraying acid-base indicating strip part of the disposable butyronitrile glove with sweat accumulation preventing function prepared under the condition of electrostatic field;
FIG. 11 is a schematic diagram of the structure of the adhesive film of the indicator strip portion of the disposable butyronitrile glove sprayed with organic solvent, which is prepared under the condition of electrostatic field and has the function of preventing sweat accumulation according to the present invention;
FIG. 12 is a schematic surface distribution diagram of an acid-base indicating strip and an organic solvent indicating strip of the disposable nitrile glove with sweat accumulation prevention function of the present invention, wherein the right side view is a front view, and the left side view is a rear view;
wherein:
1-1 parts of ceramic insulating layer, 1-2 parts of 316 stainless steel, 1-3 parts of strip-shaped recess;
2-1 parts of inner-layer adhesive film, 2-1-1 parts of polylysine-rich inner-layer adhesive film, 2-1-2 parts of sweat and water vapor discharge structure, 2-2 parts of middle-layer adhesive film, 2-3 parts of outer-layer adhesive film, 2-4 parts of acid-base indication strip, 2-5 parts of organic solvent indication strip.
Effects of the invention
The disposable butyronitrile gloves with the sweat accumulation prevention function and the preparation method thereof have the advantages that ① can enable sweat and water vapor generated by hands of a wearer to be discharged in time, wearing comfort is improved, operation sensitivity is improved, ② effectively relieves or even avoids hand itching in the wearing process, ③ prompts the damage degree of the butyronitrile gloves of the wearer in time, replacement or remedial measures can be taken in time to prevent hand skin from being damaged or further expanded, ④ enables the disposable butyronitrile gloves to have excellent ozone corrosion resistance, ⑤ prompts the butyronitrile gloves to be contaminated by acid, alkali, organic solvents and other pollutants in time, and further pollution of the pollutants to clean parts is avoided.
Detailed Description
Example 1
The hand mold used in this embodiment is a hand mold capable of generating sweat and discharging water vapor from the structure 2-1-2, the basic structure of which is shown in fig. 3, the surface of the hand mold has strip-shaped depressions 1-3, the cross section of the strip-shaped depressions 1-3 is a semiellipse, the major diameter of the semiellipse is 0.58 mm, the minor diameter is 0.46 mm, and the minor diameter is perpendicular to the surface of the adhesive film. The distribution of the strip-shaped depressions 1-3 on the surface of the hand mold is shown in fig. 4, the right drawing of fig. 4 is a front view of the hand mold capable of generating sweat and its water vapor vent structure 2-1-2, and the left drawing is a rear view. Each finger part is provided with 6 strip-shaped depressions 1-3, the surface of the hand model is provided with 30 strip-shaped depressions 1-3, and each strip-shaped depression 1-3 extends to the wrist part of the hand model. The strip-shaped depressions 1-3 are equidistantly arranged on the section perpendicular to the middle finger direction, namely, the intervals of the surfaces of all the strip-shaped depressions 1-3 on a certain section are equal.
The disposable butyronitrile gloves with the sweat accumulation preventing function are prepared by a preparation method comprising the following steps:
step 1) preparing butadiene-acrylonitrile latex for dipping for generating an inner-layer adhesive film 2-1: 100 parts of nitrile rubber emulsion, 0.8 part of potassium hydroxide, 0.008 part of tween 80 (surfactant), 0.083 part of n-heptanol (defoaming agent), 1.0 part of zinc oxide, 0.38 part of sulfur, 2.9 parts of titanium dioxide, 0.07 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 260 parts of water are weighed according to parts by weight, and the pH value of the obtained latex is 7.1-7.6. Clockwise stirring for 72 minutes after mixing, wherein the stirring speed is 88 revolutions per minute, and grinding for 5 times by using a colloid mill;
step 2) preparing the butadiene-acrylonitrile latex for dipping for generating the middle layer adhesive film 2-2: 100 parts of nitrile rubber emulsion, 1.1 parts of potassium hydroxide, 0.013 part of tween 80 (surfactant), 0.091 part of n-heptanol (defoamer), 0.9 part of zinc oxide, 0.59 part of sulfur, 1.8 parts of titanium dioxide, 0.11 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 230 parts of water are weighed according to parts by weight. Stirring for 61 minutes in a counterclockwise direction after mixing, wherein the stirring speed is 96 revolutions per minute, and grinding for 4 times by using a paint grinder;
step 3) preparing the butadiene-acrylonitrile latex for dipping for generating the outer-layer adhesive film 2-3: 100 parts of nitrile-butadiene rubber emulsion, 1.4 parts of sodium hydroxide, 0.011 part of Tween 80 (surfactant), 0.096 part of n-heptanol (defoaming agent), 1.8 parts of zinc oxide, 0.61 part of sulfur, 2.3 parts of titanium dioxide, 0.14 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 196 parts of water are weighed according to parts by weight. Stirring for 46 minutes clockwise after mixing, wherein the stirring speed is 116 revolutions per minute, and grinding for 3 times by using a paint grinder;
step 4), hand mold cleaning: washing the hand mold with dilute sulfuric acid in sequence, wherein the pH value of the dilute sulfuric acid is 2.2-2.7, washing the hand mold with alkali by using sodium hydroxide solution, and the pH value of the sodium hydroxide solution is 10.1-10.7; hot water at 83-86 ℃ for cleaning, and the water supplement amount is 5000-6000 liters per hour;
step 5), soaking a coagulant: soaking the cleaned hand model in coagulant at 51 deg.C for 62 s, and oven drying at 120 deg.C for 130 s, wherein the coagulant is 12% calcium chloride solution;
step 6), generating an inner-layer adhesive film 2-1: dipping the hand mould obtained in the step 5) in the latex obtained in the step 1) at the temperature of 27 ℃, wherein the dipping time is 22s, the stirring speed of the latex is 13 r/min, and then drying for 17 min at the temperature of 98 ℃;
step 7), generating a middle-layer adhesive film 2-2: dipping the hand mold with the inner layer adhesive film 2-1 in the step 6) in the latex obtained in the step 2) at 29 ℃, wherein the dipping time is 21s, the stirring speed of the latex is 15 r/min, and then drying for 10 min at 100 ℃;
step 8) generating an outer-layer adhesive film 2-3: dipping the hand mould with the inner layer and the middle layer adhesive film 2-2 in the step 7) in the latex obtained in the step 3) at 33 ℃, wherein the dipping time is 30s, the stirring speed of the latex is 28 r/min, and then drying for 20 min at 113 ℃;
step 9), chlorination treatment, high-temperature drying, edge curling and demolding: and (3) chloridizing the adhesive film which is subjected to the step 8), drying for 31 minutes at 133 ℃, curling and demolding to obtain the butyronitrile gloves.
The nitrile-butadiene rubber emulsion is modified carboxyl nitrile-butadiene rubber emulsion.
The modified carboxyl nitrile rubber emulsion is modified by the following method: adding 9.7 parts by weight of copper phosphate, 10 parts by weight of sodium methylene dinaphthalenesulfonate, 1.7 parts by weight of malic acid, 0.093 part by weight of benzethonium chloride, 1.8 parts by weight of citric acid and 1.08 parts by weight of D-lactic acid into 100 parts by weight of the carboxylated nitrile rubber emulsion, and uniformly mixing.
The properties of the carboxylated nitrile rubber emulsion are as follows: the solid content is 40 percent, the pH value is 8.1 to 8.3, the viscosity is less than or equal to 88 mPa.S, the surface tension is more than or equal to 41mN/m, the density is 0.91 to 0.967g/cm3, and the particle size is 110-122 nm.
The carboxyl nitrile rubber emulsion is prepared from the following raw materials in parts by weight: 78 parts of butadiene, 51 parts of acrylonitrile, 5.66 parts of acrylic acid, 6.3 parts of methyl acrylate, 0.28 part of sodium carbonate, 0.29 part of sodium chloride, 1.6 parts of potassium dodecyl sulfonate, 4.1 parts of polyoxyethylene stearate, 0.93 part of diallyl phthalate, 0.6 part of potassium persulfate, 3.1 parts of ethylene glycol diethyl acrylate, 3.6 parts of dimethyl maleate, 3.8 parts of vinyltriethoxysilane, 3.9 parts of isophorone diamine, 3.3 parts of microcrystalline paraffin, 1.2 parts of propyl stearate, 3.8 parts of tin methyl mercaptide, 1.5 parts of diphenylmethane diisocyanate, 3.8 parts of epoxy ethyl oleate and 192 parts of deionized water.
The preparation method of the carboxyl nitrile rubber emulsion comprises the following steps: step 1): adding acrylonitrile, acrylic acid, methyl acrylate, potassium dodecyl sulfonate, polyoxyethylene stearate, potassium persulfate and deionized water into a reaction kettle, uniformly mixing, then filling nitrogen, vacuumizing, adding butadiene, mixing, adjusting the temperature to 27 ℃, carrying out heat preservation reaction for 7 hours, then adding diallyl phthalate, sodium carbonate and sodium chloride, continuously heating to 63 ℃, carrying out heat preservation reaction for 3.6 hours, and stopping the reaction when the conversion rate reaches more than 98% to obtain the butyronitrile latex emulsion; step 2): adding ethylene glycol diethyl acrylate, dimethyl maleate, vinyl triethoxysilane, isophorone diamine, microcrystalline paraffin and propyl stearate into a dispersion stirring tank, adding a proper amount of deionized water, dispersing and stirring for 72 minutes, and then circularly grinding the dispersion liquid for 5 hours until the particle size of powder in the dispersion liquid is less than or equal to 4 micrometers to obtain the butyronitrile latex auxiliary material; step 3): mixing the butyronitrile latex emulsion and the butyronitrile latex auxiliary material, adding raw materials such as methyl tin mercaptide, diphenylmethane diisocyanate, bis (2-dimethylaminoethyl) ether, epoxy ethyl oleate and the like, and stirring for 23 minutes at 86 ℃ to obtain the carboxyl butyronitrile rubber latex.
The disposable butyronitrile glove with the sweat accumulation preventing function prepared by the method has a structure shown as 9, the sweat and water vapor discharging structure 2-1-2 is positioned on the inner surface of the disposable butyronitrile glove and is a series of strip-shaped bulges, the cross section of each strip-shaped bulge is a semiellipse, as shown in a partial enlarged view of the cross section of the wrist part of fig. 1, the major diameter of each semiellipse is 0.58 mm, the minor diameter of each semiellipse is 0.46 mm, and the minor diameter of each semiellipse is vertical to the surface of the adhesive film. The sweat and the water vapor discharging structure 2-1-2 are distributed on the inner surface of the disposable butyronitrile gloves, as shown in fig. 2, fig. 2 is a schematic diagram of the disposable butyronitrile gloves after being cut along a horizontal plane, 6 sweat and water vapor discharging structures 2-1-2 are arranged at each finger part, 30 sweat and water vapor discharging structures 2-1-2 are arranged on the inner surface of each disposable butyronitrile glove, and each sweat and water vapor discharging structure 2-1-2 extends to the wrist part. The sweat and the water vapor discharging structures 2-1-2 are arranged at equal intervals on the section perpendicular to the middle finger direction, namely, the intervals of all the sweat and the water vapor discharging structures 2-1-2 on a certain section along the inner surface of the disposable butyronitrile gloves are equal. The butyronitrile gloves prepared by the embodiment reduce or even avoid the accumulation of sweat and water vapor thereof between the disposable butyronitrile gloves and hand skin, and greatly improve the use experience of a wearer.
Example 2
The disposable nitrile gloves of the present invention are prepared by a preparation method comprising the steps of:
step 1), step 3) to step 5), step 7) to step 9) are the same as in example 1;
step 2) preparing the butadiene-acrylonitrile latex for dipping for generating the middle layer adhesive film 2-2: under the protection of air with oxygen completely removed, 100 parts of nitrile rubber emulsion, 1.1 parts of potassium hydroxide, 0.013 part of tween 80 (surfactant), 0.091 part of n-heptanol (defoamer), 0.9 part of zinc oxide, 0.59 part of sulfur, 1.8 parts of titanium dioxide, 0.11 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 0.008 part of nano iron powder are weighed according to parts by weight, the nano iron powder is prepared by a chemical method, is spherical in shape, has an average diameter of 30-50 nanometers, and is 230 parts of water. After mixing, the mixture was stirred for 61 minutes in the counterclockwise direction at a rotation speed of 96 rpm and ground 4 times with a paint grinder.
Step 6), generating an inner-layer adhesive film 2-1: the hand former from step 5) was dipped in the latex from step 1) at 27 ℃ for 22s under the protection of air with complete removal of oxygen, the latex was stirred at 13 rpm and then dried at 98 ℃ for 17 minutes.
The preparation method of the carboxylated nitrile-butadiene rubber emulsion and the modification method of the carboxylated nitrile-butadiene rubber emulsion are the same as those in example 1.
The middle layer adhesive film 2-2 of the disposable butyronitrile gloves prepared by the method contains nano iron powder, if the nano iron powder in the middle layer is damaged, the nano iron powder in the middle layer is in contact with oxygen in the environment, oxidation-reduction reaction is carried out, red iron oxide is generated, under the condition that the nano iron powder is not completely damaged, partial damage can be prompted to occur, a wearer can replace the nano iron powder in time or take other protective measures, and damage is prevented from further expanding.
Example 3
The disposable nitrile gloves of the present invention are prepared by a preparation method comprising the steps of:
steps 2) to 9) are the same as in example 1;
step 1) preparing butadiene-acrylonitrile latex for dipping for generating an inner-layer adhesive film 2-1: 100 parts of nitrile-butadiene rubber emulsion, 0.8 part of potassium hydroxide, 0.008 part of tween 80 (surfactant), 0.083 part of n-heptanol (defoaming agent), 1.0 part of zinc oxide, 0.38 part of sulfur, 2.9 parts of titanium dioxide, 0.07 part of zinc diethyldithiocarbamate (vulcanization accelerator), 0.008 part of polylysine, wherein the polylysine is composed of 10-13 lysine residues, 0.003 part of dihydroxyphenylalanine and 260 parts of water are weighed according to the parts by weight. After mixing, the mixture was stirred clockwise for 46 minutes at 116 rpm and ground 3 times with a paint grinder. The pH value of the obtained latex is 7.1-7.6.
The preparation method of the carboxylated nitrile-butadiene rubber emulsion and the modification method of the carboxylated nitrile-butadiene rubber emulsion are the same as those in example 1.
The disposable butyronitrile gloves prepared by the method can reduce the pruritus incidence rate of the hands of a wearer by 39 percent in the using process.
Comparative example 1
The hand model used in this comparative example was the same as that of example 1.
The disposable nitrile gloves are prepared by a preparation method comprising the following steps:
step 1) preparing nitrile latex for dipping for generating an inner-layer adhesive film: 100 parts of nitrile-butadiene rubber emulsion, 1.2 parts of potassium hydroxide, 0.9 part of methylene dinaphthalene sodium sulfonate, 0.7 part of sodium polyacrylate, 1.1 part of sulfur, 1.3 parts of zinc oxide, 0.7 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 1.7 parts of titanium dioxide are respectively weighed according to the parts by weight, the solid content is adjusted to 32% by water, and the stirring speed is 120 r/min;
step 2) preparing butadiene-acrylonitrile latex for dipping for generating a middle layer adhesive film: 100 parts of nitrile-butadiene rubber emulsion, 1.2 parts of potassium hydroxide, 0.9 part of methylene dinaphthalene sodium sulfonate, 0.7 part of sodium polyacrylate, 1.1 part of sulfur, 1.3 parts of zinc oxide, 0.7 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 1.7 parts of titanium dioxide are respectively weighed according to the parts by weight, the solid content is adjusted to 32% by water, and the stirring speed is 120 r/min;
step 3), preparing the butadiene-acrylonitrile latex for dipping for generating an outer-layer adhesive film: 100 parts of nitrile-butadiene rubber emulsion, 1.2 parts of potassium hydroxide, 0.9 part of methylene dinaphthalene sodium sulfonate, 0.7 part of sodium polyacrylate, 1.1 part of sulfur, 1.3 parts of zinc oxide, 0.7 part of zinc diethyldithiocarbamate (vulcanization accelerator) and 1.7 parts of titanium dioxide are respectively weighed according to the parts by weight, the solid content is adjusted to 32% by water, and the stirring speed is 120 r/min;
step 4), hand mold cleaning: the hand mold is washed by dilute sulfuric acid in sequence, the pH value of the dilute sulfuric acid is 2.0-3.0, and the hand mold is washed by alkali in a sodium hydroxide solution, and the pH value of the sodium hydroxide solution is 10.0-11.0; cleaning with hot water at the temperature of 80-90 ℃;
step 5), soaking a coagulant: soaking the cleaned hand mold in coagulant at 53 deg.c for 40 sec, and stoving at 100 deg.c for 110 sec to obtain 12% concentration calcium chloride solution as coagulant;
step 6) generating an inner-layer adhesive film: dipping the hand mould obtained in the step 5) into the latex obtained in the step 1), wherein the dipping time is 20s, the stirring speed of the latex is 20 r/min, and then drying the latex at 100 ℃ for 20 min;
step 7) generating a middle-layer adhesive film: dipping the hand mold with the inner layer adhesive film in the step 6) in the latex obtained in the step 2), wherein the dipping time is 20s, the stirring speed of the latex is 20 r/min, and then drying the latex at 100 ℃ for 20 min;
step 8) generating an outer-layer adhesive film: dipping the hand mold with the inner layer and the middle layer adhesive film in the step 7) in the latex obtained in the step 3), wherein the dipping time is 20s, the stirring speed of the latex is 20 r/min, and then drying for 20 min at 100 ℃;
step 9), chlorination treatment, high-temperature drying, edge curling and demolding: and (3) chloridizing the adhesive film which is subjected to the step 8), drying at 134 ℃ for 33 minutes, curling and demolding to obtain the butyronitrile gloves.
The nitrile-butadiene rubber emulsion is modified carboxyl nitrile-butadiene rubber emulsion.
The modified carboxyl nitrile rubber emulsion is modified by the following method: adding 12 parts of Chalcanthitum, 11 parts of secondary alkyl sodium sulfonate, 3 parts of succinic acid, 0.5 part of benzalkonium chloride, 2 parts of realgar and 4 parts of citric acid into 100 parts by weight of butyronitrile emulsion, and uniformly mixing.
The carboxyl nitrile rubber emulsion is prepared from the following raw materials in parts by weight: 90 parts of butadiene, 45 parts of acrylonitrile, 8 parts of acrylic acid, 4 parts of methyl acrylate, 0.8 part of sodium bicarbonate, 0.42 part of potassium chloride, 1.6 parts of sodium dodecyl sulfonate, 2.9 parts of polyoxyethylene stearate, 1.6 parts of diallyl phthalate, 0.8 part of potassium persulfate, 3.8 parts of ethylene glycol dimethacrylate, 3.1 parts of diethyl maleate, 4.1 parts of vinyltriethoxysilane, 5 parts of isophorone diamine, 4 parts of microcrystalline paraffin, 1.5 parts of butyl stearate, 4.5 parts of methyl tin mercaptide, 2.2 parts of diphenylmethane diisocyanate, 3.5 parts of bis (2-dimethylaminoethyl) ether, 6 parts of epoxy butyl oleate and 170 parts of deionized water.
The preparation method of the carboxyl nitrile rubber emulsion comprises the following steps: preparation method step 1): adding acrylonitrile, acrylic acid, methyl acrylate, sodium dodecyl sulfate, polyoxyethylene stearate, potassium persulfate and deionized water into a reaction kettle, uniformly mixing, then filling nitrogen, vacuumizing, adding butadiene, mixing, adjusting the temperature to 30-40 ℃, carrying out heat preservation reaction for 5 hours, then adding diallyl phthalate, sodium bicarbonate and potassium chloride, continuously heating to 50-60 ℃, carrying out heat preservation reaction for 5 hours, and stopping the reaction when the conversion rate reaches more than 97% to obtain the butyronitrile latex emulsion; step 2): adding ethylene glycol dimethacrylate, diethyl maleate, vinyltriethoxysilane, isophorone diamine, microcrystalline paraffin and butyl stearate into a dispersion stirring tank, adding a proper amount of deionized water, dispersing and stirring for 50-60 minutes, and then circularly grinding the dispersion liquid for 6 hours until the particle size of powder in the dispersion liquid is less than or equal to 4 micrometers to obtain the butyronitrile latex auxiliary material; step 3): mixing the butyronitrile latex emulsion and the butyronitrile latex auxiliary material, adding the raw materials of methyl tin mercaptide, diphenylmethane diisocyanate, bis (2-dimethylaminoethyl) ether, epoxy butyl oleate and the like, and stirring for 40 minutes at 70-80 ℃ to obtain the butyronitrile latex.
The gloves with the same structure as the disposable butyronitrile gloves in the embodiment 1 can be prepared by adopting the method, but the gloves in the comparative example have insufficient toughness of the strip-shaped bulges on the inner sides, poor sweat and water vapor discharging effect, the discharging speed of the sweat and the water vapor is only about 20 percent of that of the gloves prepared in the embodiment 1, and the gloves have certain foreign body feeling during wearing, thereby reducing the using experience of a wearer.
Claims (2)
1. The disposable butyronitrile gloves with the sweat accumulation prevention function are characterized in that the disposable butyronitrile gloves with the sweat accumulation prevention function are provided with sweat and a water vapor discharge structure (2-1-2) thereof, the sweat and the water vapor discharge structure (2-1-2) thereof are positioned on the inner surfaces of the disposable butyronitrile gloves and are a series of strip-shaped bulges, the cross sections of the strip-shaped bulges are semiellipses, the major diameter of each semiellipse is 0.58 mm, the minor diameter of each semiellipse is 0.46 mm, and the minor diameter of each semiellipse is vertical to the surface of a glue film;
the sweat and the water vapor discharging structures (2-1-2) thereof are distributed on the inner surface of the butyronitrile gloves, 6 sweat and water vapor discharging structures (2-1-2) thereof are arranged at each finger part, 30 sweat and water vapor discharging structures (2-1-2) thereof are arranged on the inner surface of each butyronitrile glove, each sweat and water vapor discharging structure (2-1-2) thereof extend to the wrist part, and the sweat and water vapor discharging structures (2-1-2) thereof are arranged at equal intervals on the section perpendicular to the middle finger direction;
the disposable butyronitrile gloves with the function of preventing sweat accumulation are composed of three layers of adhesive films, wherein the three layers of adhesive films are respectively an inner layer adhesive film (2-1), a middle layer adhesive film (2-2) and an outer layer adhesive film (2-3);
the butyronitrile latex for generating the inner layer adhesive film (2-1) is prepared from the following raw materials in parts by weight: 100 parts of nitrile butadiene rubber emulsion, 0.8 part of potassium hydroxide, 0.008 part of tween 80, 0.083 part of n-heptanol, 1.0 part of zinc oxide, 0.38 part of sulfur, 2.9 parts of titanium dioxide, 0.07 part of zinc diethyldithiocarbamate and 260 parts of water, wherein the pH value of the obtained latex is 7.1-7.6;
the butyronitrile latex for generating the middle layer adhesive film (2-2) is prepared from the following raw materials in parts by weight: 100 parts of nitrile rubber emulsion, 1.1 parts of potassium hydroxide, 0.013 part of tween 80, 0.091 part of n-heptanol, 0.9 part of zinc oxide, 0.59 part of sulfur, 1.8 parts of titanium dioxide, 0.11 part of zinc diethyldithiocarbamate and 230 parts of water;
the butyronitrile latex for generating the outer-layer adhesive film (2-3) is prepared from the following raw materials in parts by weight: 100 parts of nitrile butadiene rubber emulsion, 1.4 parts of sodium hydroxide, 0.011 part of tween 80, 0.096 part of n-heptanol, 1.8 parts of zinc oxide, 0.61 part of sulfur, 2.3 parts of titanium dioxide, 0.14 part of zinc diethyldithiocarbamate and 196 parts of water;
the nitrile-butadiene rubber emulsion is modified carboxyl nitrile-butadiene rubber emulsion;
the modified carboxyl nitrile rubber emulsion is modified by the following method: adding 9.7 parts by weight of copper phosphate, 10 parts by weight of sodium methylene dinaphthalenesulfonate, 1.7 parts by weight of malic acid, 0.093 part by weight of benzethonium chloride, 1.8 parts by weight of citric acid and 1.08 parts by weight of D-lactic acid into 100 parts by weight of the carboxylated nitrile rubber emulsion, and uniformly mixing;
the properties of the carboxylated nitrile rubber emulsion are as follows: the solid content is 40 percent, the pH value is 8.1 to 8.3, the viscosity is less than or equal to 88 mPa.S, the surface tension is more than or equal to 41mN/m, the density is 0.91 to 0.967g/cm3, and the particle size is 110-122 nm;
the carboxyl nitrile rubber emulsion is prepared from the following raw materials in parts by weight: 78 parts of butadiene, 51 parts of acrylonitrile, 5.66 parts of acrylic acid, 6.3 parts of methyl acrylate, 0.28 part of sodium carbonate, 0.29 part of sodium chloride, 1.6 parts of potassium dodecyl sulfonate, 4.1 parts of polyoxyethylene stearate, 0.93 part of diallyl phthalate, 0.6 part of potassium persulfate, 3.1 parts of ethylene glycol diethyl acrylate, 3.6 parts of dimethyl maleate, 3.8 parts of vinyltriethoxysilane, 3.9 parts of isophorone diamine, 3.3 parts of microcrystalline paraffin, 1.2 parts of propyl stearate, 3.8 parts of tin methyl mercaptide, 1.5 parts of diphenylmethane diisocyanate, 3.8 parts of epoxy ethyl oleate and 192 parts of deionized water;
the preparation method of the carboxyl nitrile rubber emulsion comprises the following steps: step 1): adding acrylonitrile, acrylic acid, methyl acrylate, potassium dodecyl sulfonate, polyoxyethylene stearate, potassium persulfate and deionized water into a reaction kettle, uniformly mixing, then filling nitrogen, vacuumizing, adding butadiene, mixing, adjusting the temperature to 27 ℃, carrying out heat preservation reaction for 7 hours, then adding diallyl phthalate, sodium carbonate and sodium chloride, continuously heating to 63 ℃, carrying out heat preservation reaction for 3.6 hours, and stopping the reaction when the conversion rate reaches more than 98% to obtain the butyronitrile latex emulsion; step 2): adding ethylene glycol diethyl acrylate, dimethyl maleate, vinyl triethoxysilane, isophorone diamine, microcrystalline paraffin and propyl stearate into a dispersion stirring tank, adding a proper amount of deionized water, dispersing and stirring for 72 minutes, and then circularly grinding the dispersion liquid for 5 hours until the particle size of powder in the dispersion liquid is less than or equal to 4 micrometers to obtain the butyronitrile latex auxiliary material; step 3): mixing the butyronitrile latex emulsion and the butyronitrile latex auxiliary material, adding raw materials such as methyl tin mercaptide, diphenylmethane diisocyanate, bis (2-dimethylaminoethyl) ether, epoxy ethyl oleate and the like, and stirring for 23 minutes at 86 ℃ to obtain the carboxyl butyronitrile rubber latex.
2. A method for preparing disposable nitrile gloves with sweat accumulation prevention function according to claim 1, wherein the method for preparing disposable nitrile gloves with sweat accumulation prevention function comprises the following steps:
step 1) preparing nitrile latex for dipping for generating an inner-layer adhesive film (2-1): preparing and mixing the materials according to the weight parts, clockwise stirring for 72 minutes at the stirring speed of 88 revolutions per minute, and grinding for 5 times by using a colloid mill;
step 2) preparing the butadiene-acrylonitrile latex for dipping for generating the middle layer adhesive film (2-2): preparing and mixing the materials according to the weight parts, stirring the materials for 61 minutes in a counter-clockwise mode, wherein the stirring speed is 96 revolutions per minute, and grinding the materials for 4 times by using a paint grinder;
step 3) preparing the butadiene-acrylonitrile latex for dipping for generating the outer-layer adhesive film (2-3): preparing and mixing the raw materials according to the weight part, clockwise stirring for 46 minutes at the stirring speed of 116 revolutions per minute, and grinding for 3 times by using a paint grinder;
step 4), hand mold cleaning: washing the hand mold with dilute sulfuric acid in sequence, wherein the pH value of the dilute sulfuric acid is 2.2-2.7, washing the hand mold with alkali by using sodium hydroxide solution, and the pH value of the sodium hydroxide solution is 10.1-10.7; hot water at 83-86 ℃ for cleaning, and the water supplement amount is 5000-6000 liters per hour;
step 5), soaking a coagulant: soaking the cleaned hand model in coagulant at 51 deg.C for 62 s, and oven drying at 120 deg.C for 130 s, wherein the coagulant is 12% calcium chloride solution;
step 6), generating an inner-layer adhesive film (2-1): dipping the hand mould obtained in the step 5) in the latex obtained in the step 1) at the temperature of 27 ℃, wherein the dipping time is 22s, the stirring speed of the latex is 13 r/min, and then drying for 17 min at the temperature of 98 ℃;
step 7), generating a middle layer adhesive film (2-2): dipping the hand mould with the inner layer adhesive film (2-1) in the step 6) in the latex obtained in the step 2) at 29 ℃, wherein the dipping time is 21s, the stirring speed of the latex is 15 r/min, and then drying for 10 min at 100 ℃;
step 8), generating an outer-layer adhesive film (2-3): dipping the hand mould with the inner layer adhesive film (2-1) and the middle layer adhesive film (2-2) in the step 7) in the latex obtained in the step 3) at 33 ℃, wherein the dipping time is 30s, the stirring speed of the latex is 28 r/min, and then drying for 20 min at 113 ℃;
step 9), chlorination treatment, high-temperature drying, edge curling and demolding: chloridizing the adhesive film obtained in the step 8), drying at 133 ℃ for 31 minutes, curling and demolding to obtain the butyronitrile gloves;
the preparation method uses a hand mould capable of generating sweat and a water vapor discharge structure (2-1-2) thereof, the surface of the hand mould capable of generating sweat and the water vapor discharge structure (2-1-2) thereof is provided with strip-shaped depressions (1-3), the cross section of each strip-shaped depression (1-3) is a semiellipse, the major diameter of each semiellipse is 0.58 mm, the minor diameter of each semiellipse is 0.46 mm, and the minor diameter of each semiellipse is vertical to the surface of the adhesive film;
the strip-shaped depressions (1-3) are distributed on the surface of the hand model, 6 strip-shaped depressions (1-3) are arranged at each finger part, 30 strip-shaped depressions (1-3) are arranged on the surface of the hand model, each strip-shaped depression (1-3) extends to the wrist part of the hand model, and the strip-shaped depressions (1-3) are equidistantly arranged on the section perpendicular to the middle finger direction.
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Cited By (1)
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