High-cleanliness wear-resistant anti-slip butyronitrile glove and production process thereof

Abstract

The invention relates to the technical field of butyronitrile gloves, and discloses a high-cleanliness wear-resistant anti-skid butyronitrile glove and a production process thereof.The butyronitrile glove is prepared by the steps that carboxyl butyronitrile latex serves as a base material, a wear-resistant functional additive and the like serve as auxiliary materials, slurry is prepared, then a glove model is soaked in the slurry for sizing, and finally the high-temperature vulcanization process is conducted, so that the high-cleanliness wear-resistant anti-skid butyronitrile glove is obtained. Wherein the wear-resistant functional additive is prepared by immobilizing a carbon nanotube on the surface of sisal fiber by using a macromolecular substance with an alternating structure as a connecting material, and the macromolecular substance structure contains a large number of silicon-oxygen bonds, so that a super-hydrophobic layer can be formed on the surface of the glove, and the glove is endowed with a self-cleaning effect; and the macromolecular substances can improve the compatibility between the sisal fibers and the carbon nanotubes and the glove base material, so that the antistatic performance of the glove is improved, and the glove has a high-cleanliness effect. In addition, after the carbon nanotubes are immobilized on the surfaces of the sisal fibers, a'ball 'effect can be formed, so that the wear resistance of the butyronitrile gloves is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrile gloves, and in particular to a high-cleanliness, wear-resistant and non-slip nitrile glove and a production process thereof. Background Art

[0002] In many fields, including modern industry, healthcare, and food processing, nitrile gloves, with their unique properties and advantages, have become a key protective equipment for ensuring operational safety and product quality. One of the most notable features of nitrile gloves is their high elasticity and flexibility, which allows them to fit snugly to the hand, providing a pleasant feel, natural friction, and dexterity. This allows the wearer to perform various tasks with greater precision, ensuring ease of use, whether performing delicate medical procedures or complex industrial assembly. Furthermore, the excellent protective properties of nitrile gloves have positively impacted their application across various industries. For example, in the healthcare sector, nitrile gloves protect medical workers' hands from chemicals like alcohol and iodine. In the industrial sector, nitrile gloves prevent corrosion on components, ensuring the quality and performance of electronic products. In industries like automotive manufacturing and chemical production, nitrile gloves also protect workers' hands from harmful substances like oil, acids, and alkalis, safeguarding their health.

[0003] However, with the continuous development of various industries, the performance requirements for nitrile gloves are gradually increasing, among which cleanliness and wear resistance are the top priorities. Based on this, the present invention provides a nitrile glove with high cleanliness and wear resistance, which can effectively broaden the application scope of nitrile gloves. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a high-cleanliness, wear-resistant, and non-slip nitrile glove and a production process thereof.

[0006] (2) Technical solution

[0007] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0008] The first step is to add carboxyl nitrile latex, wear-resistant functional additives, vulcanizing agent, zinc oxide, surfactant, foaming agent and accelerator into deionized water, stir and mix evenly, then continue to add thickener under continuous stirring, and stir until a uniform slurry is formed;

[0009] Step 2: After washing and drying, the glove mold is immersed in the coagulation liquid at a controlled temperature of 60-70°C for 30-60 seconds, immediately removed and dried. Then, it is immersed in the slurry at a controlled temperature of room temperature for 10-20 seconds, removed and then immersed for a second time for 20-30 seconds. After removal and draining, it is dried and transferred to a temperature environment of 130-140°C for vulcanization for 1-3 hours. Finally, it is demoulded.

[0010] The wear-resistant functional additive is sisal fiber immobilized with carbon nanotubes.

[0011] As a further embodiment of the present invention, the weight proportions of the components in the slurry are as follows: 80-100 parts of carboxylated nitrile latex, 2-6.5 parts of wear-resistant functional additives, 5-10 parts of vulcanizing agent, 2-3 parts of zinc oxide, 1-2 parts of surfactant, 1-4 parts of foaming agent, 3-6 parts of accelerator, 80-100 parts of deionized water, and 4-8 parts of thickener.

[0012] As a further solution of the present invention, the preparation method of the wear-resistant functional additive is as follows:

[0013] Step 1: Add the binder to deionized water, stir mechanically to mix evenly, then raise the temperature to 60-70°C and pre-hydrolyze for 2-4 hours to form a binder hydrolyzate;

[0014] Step 2: Disperse sisal fiber in anhydrous ethanol to form a uniform dispersion, add the connecting material hydrolyzate to the formed dispersion, raise the temperature to 60-70°C, keep warm for 2-4 hours, lower the temperature to 30-40°C, continue to add multi-walled carbon nanotubes, continue to keep warm and stir for 6-12 hours, stop heating, cool naturally, centrifuge the solid material, wash, and vacuum dry to obtain a wear-resistant functional additive.

[0015] As a further solution of the present invention, in step 1, the preparation method of the connecting material is as follows:

[0016] N,N'-bis(2-hydroxyethyl)-N,N'-bis(trimethoxysilylpropyl)ethylenediamine, bis(dichloromethyldimethylsilane) and toluene are stirred and mixed evenly, placed in a polymerization kettle filled with nitrogen, and then the catalyst is added. After the addition is completed, the temperature is raised to 70-80°C, and the mixture is kept warm and stirred for 12-18 hours. The nitrogen is removed, the solvent is removed by rotary evaporation, the solid material is collected, and the connecting material is obtained after purification.

[0017] As a further embodiment of the present invention, the molar ratio of N,N'-bis(2-hydroxyethyl)-N,N'-bis(trimethoxysilylpropyl)ethylenediamine to bis(dichloromethyldimethylsilane) is 1:1.

[0018] As a further embodiment of the present invention, the catalyst is potassium hydroxide or sodium hydroxide.

[0019] As a further embodiment of the present invention, the mass ratio of the sisal fiber to the multi-walled carbon nanotubes is 1:0.1-0.2.

[0020] In the above technical solution, N,N'-bis(2-hydroxyethyl)-N,N'-bis(trimethoxysilylpropyl)ethylenediamine and bis(dichloromethyldimethylsilane) are first used as raw materials. Under the action of a catalyst, the active hydroxyl substituents and halogen substituents in each other's structures undergo continuous substitution reactions to obtain a macromolecular substance connected by ether bonds and having an alternating structure. The macromolecular substance is used as a connecting material, and the large number of siloxane groups in its structure are utilized to achieve the purpose of immobilizing carbon nanotubes on the surface of sisal fibers, and finally obtain sisal fibers immobilized with carbon nanotubes, that is, wear-resistant functional additives.

[0021] As a further embodiment of the present invention, the vulcanizing agent is sulfur; the surfactant is at least one of sodium fatty alcohol polyoxyethylene ether sulfate, sodium dodecylbenzenesulfonate, and glyceryl monostearate; the foaming agent is potassium ricinoleate or potassium oleate; the accelerator is accelerator BZ or accelerator EZ; and the thickener is sodium hydroxyethyl cellulose or sodium alginate.

[0022] As a further embodiment of the present invention, the coagulation liquid is a mixture of calcium chloride, calcium stearate and water in a mass ratio of 8-15:0.8-2:100.

[0023] A pair of high-cleanliness, wear-resistant and non-slip nitrile gloves is produced by adopting the above production process.

[0024] (3) Beneficial technical effects

[0025] The present invention uses a macromolecular substance with an alternating structure as a connecting material to immobilize carbon nanotubes on the surface of sisal fibers to produce a wear-resistant functional additive. On the one hand, the macromolecular substance structure contains a large number of silicon-oxygen bonds, which can form a super-hydrophobic layer on the surface of the gloves, giving the gloves a self-cleaning effect. On the other hand, the presence of the macromolecular substance can improve the compatibility between the sisal fibers and the carbon nanotubes and the glove substrate, which is conducive to the uniform dispersion of the wear-resistant functional additive. The conductivity of the carbon nanotubes is utilized to realize the construction of a conductive path of the gloves, improve the antistatic properties of the gloves, and thus make the gloves have a high cleaning effect. In addition, after being immobilized on the surface of the sisal fibers, the carbon nanotubes can form a "balling" effect, thereby improving the wear resistance of the nitrile gloves. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described in more detail below. Preferred embodiments of the present invention are provided below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0027] Preparation Example 1

[0028] Preparation of wear-resistant functional additives:

[0029] Step 1: Add 1.5 g of the binder to 80 mL of deionized water, stir mechanically to mix evenly, then raise the temperature to 65°C and pre-hydrolyze for 3 hours to form a binder hydrolyzate;

[0030] Step 2: Disperse 2.5 g of sisal fiber in 100 mL of anhydrous ethanol to form a uniform dispersion, then add the connecting material hydrolyzate to the formed dispersion. After the addition is completed, raise the temperature to 65 ° C. After heat preservation for 3 hours, lower the temperature to 40 ° C. and continue to add 0.3 g of multi-walled carbon nanotubes. After the addition is completed, continue to keep warm and stir for 9 hours, stop heating, cool naturally, and centrifuge the solid material. After washing and vacuum drying, the wear-resistant functional additive can be obtained.

[0031] The preparation method of the connecting material is as follows:

[0032] 0.4 g of N, N'-bis(2-hydroxyethyl)-N, N'-bis(trimethoxysilylpropyl)ethylenediamine, 0.13 g of bis(dichloromethyldimethylsilane) and toluene were stirred and mixed evenly, placed in a polymerization kettle filled with nitrogen, and 0.1 g of potassium hydroxide was added. After the addition was completed, the temperature was raised to 75°C, and the mixture was kept warm and stirred for 16 hours. The nitrogen was removed, the solvent was removed by rotary evaporation, the solid material was collected, and the connecting material was obtained after purification.

[0033] Example 1

[0034] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0035] The first step is to add 80 parts of carboxyl nitrile latex, 2 parts of wear-resistant functional additives, 5 parts of sulfur vulcanizing agent, 2 parts of zinc oxide, 1 part of surfactant fatty alcohol polyoxyethylene ether sodium sulfate, 1 part of foaming agent potassium ricinoleate and 3 parts of accelerator BZ to 80 parts of deionized water in parts by weight, stir and mix evenly, then continue to add 4 parts of thickener sodium hydroxyethyl cellulose under continuous stirring, and stir until a uniform slurry is formed after the addition is completed;

[0036] The second step is to wash and dry the glove mold, then immerse it in the coagulation liquid at a controlled temperature of 60°C for 30 seconds, remove it immediately, dry it, and then immerse it in the slurry at a controlled temperature of room temperature for 10 seconds, remove it, and then immerse it again for 20 seconds. After removal and draining, it is transferred to a temperature environment of 130°C for vulcanization for 3 hours, and finally demolded.

[0037] The preparation method of the wear-resistant functional additive is shown in Preparation Example 1; the coagulation liquid is formed by mixing calcium chloride, calcium stearate and water in a mass ratio of 10:1:100, and the following are the same.

[0038] Example 2

[0039] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0040] The first step is to add 85 parts of carboxylated nitrile latex, 6 parts of wear-resistant functional additives, 8 parts of sulfur vulcanizing agent, 3 parts of zinc oxide, 1.5 parts of surfactant sodium dodecylbenzene sulfonate, 2 parts of foaming agent potassium oleate and 4 parts of accelerator EZ to 100 parts of deionized water in parts by weight, stir and mix evenly, then continue to add 6 parts of thickener sodium alginate under continuous stirring, and stir until a uniform slurry is formed;

[0041] The second step is to wash and dry the glove mold, then immerse it in the coagulation liquid at a controlled temperature of 65°C for 40 seconds, remove it immediately, dry it, and then immerse it in the slurry at a controlled temperature of room temperature for 15 seconds, remove it, and then immerse it a second time for 25 seconds. Remove it, drain it, and after drying, transfer it to a temperature environment of 135°C for vulcanization for 2 hours. Finally, demould it.

[0042] Example 3

[0043] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0044] The first step is to add 100 parts of carboxylated nitrile latex, 6.5 parts of wear-resistant functional additives, 10 parts of sulfur as a vulcanizing agent, 3 parts of zinc oxide, 2 parts of sodium dodecylbenzenesulfonate as a surfactant, 4 parts of potassium oleate as a foaming agent, and 6 parts of accelerator EZ to 100 parts of deionized water in parts by weight, stir and mix evenly, then continue to add 8 parts of sodium alginate as a thickener under continuous stirring, and stir until a uniform slurry is formed after the addition is completed;

[0045] The second step is to wash and dry the glove mold, then immerse it in the coagulation liquid at a controlled temperature of 70°C for 60 seconds, remove it immediately, dry it, and then immerse it in the slurry at a controlled temperature of room temperature for 20 seconds, remove it, and then perform a second immersion at 0 seconds. Remove it, drain it, and after drying, transfer it to a temperature environment of 140°C for vulcanization treatment for 1 hour, and finally demold it.

[0046] Comparative Example 1

[0047] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0048] The first step is to add 85 parts of carboxylated nitrile latex, 6 parts of binder, 8 parts of vulcanizing agent sulfur, 3 parts of zinc oxide, 1.5 parts of surfactant sodium dodecylbenzene sulfonate, 2 parts of foaming agent potassium oleate and 4 parts of accelerator EZ to 100 parts of deionized water, stir and mix evenly, then continue to add 6 parts of thickener sodium alginate under continuous stirring, and stir until a uniform slurry is formed after the addition is completed;

[0049] The second step is to wash and dry the glove mold, then immerse it in the coagulation liquid at a controlled temperature of 65°C for 40 seconds, remove it immediately, dry it, and then immerse it in the slurry at a controlled temperature of room temperature for 15 seconds, remove it, and then immerse it a second time for 25 seconds. Remove it, drain it, and after drying, transfer it to a temperature environment of 135°C for vulcanization for 2 hours. Finally, demould it.

[0050] The preparation method of the connecting material is shown in Preparation Example 1.

[0051] Comparative Example 2

[0052] A production process for high-cleanliness, wear-resistant and non-slip nitrile gloves comprises the following steps:

[0053] The first step is to add 85 parts of carboxylated nitrile latex, 8 parts of sulfur as a vulcanizing agent, 3 parts of zinc oxide, 1.5 parts of sodium dodecylbenzenesulfonate as a surfactant, 2 parts of potassium oleate as a foaming agent, and 4 parts of accelerator EZ to 100 parts of deionized water, stirring and mixing them evenly. Then, under continuous stirring, continue to add 6 parts of sodium alginate as a thickener. After the addition is completed, stir until a uniform slurry is formed;

[0054] The second step is to wash and dry the glove mold, then immerse it in the coagulation liquid at a controlled temperature of 65°C for 40 seconds, remove it immediately, dry it, and then immerse it in the slurry at a controlled temperature of room temperature for 15 seconds, remove it, and then immerse it a second time for 25 seconds. Remove it, drain it, and after drying, transfer it to a temperature environment of 135°C for vulcanization for 2 hours. Finally, demould it.

[0055] Performance Testing

[0056] The gloves in the examples and comparative examples were sampled and processed to make various test samples, and various performance tests were performed;

[0057] Use a water contact angle meter to test the water contact angle;

[0058] The surface resistivity is tested using a resistivity tester, and the test voltage is 100V;

[0059] According to GB / T 9867-2008, wear resistance test is carried out;

[0060] The results are shown in the table below:

[0061] Water contact angle / ° Resistivity / Ω Absolute wear / g Example 1 151 <![CDATA[3.4×10 5 ]]> 0.31 Example 2 152 <![CDATA[2.8×10 5 ]]> 0.27 Example 3 151 <![CDATA[3.0×10 5 ]]> 0.28 Comparative Example 1 153 <![CDATA[6.7×10 8 ]]> 0.58 Comparative Example 2 125 <![CDATA[7.1×10 8 ]]> 0.64

[0062] Analysis shows that although nitrile gloves prepared with linkers as additives can exhibit excellent superhydrophobic self-cleaning effects, they lose the "balling" effect and conductivity brought by carbon nanotubes, resulting in a significant reduction in the gloves' dustproof, antistatic and wear-resistant properties.

[0063] Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas, including the best mode, and also enable any technician in the field to practice the present invention, including making and using any device or system, and implementing any combined method. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The scope of patent protection of the present invention is defined by the claims and may include other embodiments that can be thought of by those skilled in the art. If these other embodiments have structural elements similar to the literal description of the claims, or if they include equivalent structural elements that are not substantially different from the literal description of the claims, then these other embodiments should also be included in the scope of the claims.

[0064] Based on the ideal embodiments of the present invention, and with reference to the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A production process for high-cleanliness wear-resistant and non-slip nitrile gloves, characterized in that: The following steps are involved: The first step is to add carboxyl nitrile latex, wear-resistant functional additives, vulcanizing agent, zinc oxide, surfactant, foaming agent and accelerator into deionized water, stir and mix evenly, then continue to add thickener under continuous stirring, and stir until a uniform slurry is formed; Step 2: After washing and drying, the glove mold is immersed in the coagulation liquid at a controlled temperature of 60-70°C for 30-60 seconds, immediately removed and dried. Then, it is immersed in the slurry at a controlled temperature of room temperature for 10-20 seconds, removed and then immersed for a second time for 20-30 seconds. After removal and draining, it is dried and transferred to a temperature environment of 130-140°C for vulcanization for 1-3 hours. Finally, it is demoulded. The wear-resistant functional additive is sisal fiber immobilized with carbon nanotubes.

2. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 1, characterized in that: The weight proportions of the components in the slurry are as follows: 80-100 parts of carboxyl nitrile latex, 2-6.5 parts of wear-resistant functional additive, 5-10 parts of vulcanizing agent, 2-3 parts of zinc oxide, 1-2 parts of surfactant, 1-4 parts of foaming agent, 3-6 parts of accelerator, 80-100 parts of deionized water, and 4-8 parts of thickener.

3. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 1, characterized in that: The preparation method of the wear-resistant functional additive is as follows: Step 1: Add the binder to deionized water, stir mechanically to mix evenly, then raise the temperature to 60-70°C and pre-hydrolyze for 2-4 hours to form a binder hydrolyzate; Step 2: Disperse sisal fiber in anhydrous ethanol to form a uniform dispersion, add the connecting material hydrolyzate to the formed dispersion, raise the temperature to 60-70°C, keep warm for 2-4 hours, lower the temperature to 30-40°C, continue to add multi-walled carbon nanotubes, continue to keep warm and stir for 6-12 hours, stop heating, cool naturally, centrifuge the solid material, wash, and vacuum dry to obtain a wear-resistant functional additive.

4. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 3, characterized in that: In step 1, the preparation method of the connecting material is as follows: N,N'-bis(2-hydroxyethyl)-N,N'-bis(trimethoxysilylpropyl)ethylenediamine, bis(dichloromethyldimethylsilane) and toluene are stirred and mixed evenly, placed in a polymerization kettle filled with nitrogen, and then the catalyst is added. After the addition is completed, the temperature is raised to 70-80°C, and the mixture is kept warm and stirred for 12-18 hours. The nitrogen is removed, the solvent is removed by rotary evaporation, the solid material is collected, and the connecting material is obtained after purification.

5. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 4, characterized in that: The molar ratio of the N,N'-bis(2-hydroxyethyl)-N,N'-bis(trimethoxysilylpropyl)ethylenediamine to bis(dichloromethyldimethylsilane) is 1:

1.

6. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 4, characterized in that: The catalyst is potassium hydroxide or sodium hydroxide.

7. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 3, characterized in that: The mass ratio of the sisal fiber to the multi-walled carbon nanotube is 1:0.1-0.

2.

8. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 1, characterized in that: The vulcanizing agent is sulfur; the surfactant is at least one of sodium fatty alcohol polyoxyethylene ether sulfate, sodium dodecylbenzenesulfonate, and glyceryl monostearate; the foaming agent is potassium ricinoleate or potassium oleate; the accelerator is accelerator BZ or accelerator EZ; and the thickener is sodium hydroxyethyl cellulose or sodium alginate.

9. The production process of a high-cleanliness wear-resistant and non-slip nitrile gloves according to claim 1, characterized in that: The coagulation liquid is a mixture of calcium chloride, calcium stearate and water, with a mass ratio of 8-15:0.8-2:

100.

10. A high-cleanliness, wear-resistant and non-slip nitrile glove, characterized in that: The method is prepared by the production process as claimed in claim 1.