Nitrile glove with anti-static function and processing method thereof

Abstract

The application discloses a nitrile glove with an antistatic function and a processing method thereof, and relates to the technical field of nitrile gloves. The antistatic nitrile glove comprises the following raw materials in parts by weight: 50-60 parts of nitrile latex, 0.5-1 part of biomass conversion material, 0.5-1.5 parts of polythiophene conductive polymer, 0.2-1 part of ionic liquid, 1.5-2 parts of dispersing agent, 1.5-2 parts of sulfur, 0.8-1 part of accelerator, 1.2-1.5 parts of corrosion-resistant agent, 1-2 parts of antioxidant, 0.5-1.5 parts of glycerol, 2-3 parts of zinc oxide and 0.3-1 part of stearic acid. The nitrile glove with the antistatic function has excellent antistatic performance, mechanical performance and corrosion resistance.

Description

Technical Field

[0001] This invention relates to the field of nitrile gloves, specifically to a nitrile glove with antistatic function and its processing method. Background Technology

[0002] Nitrile gloves are widely used in medical protective equipment, electronics manufacturing, precision assembly, and chemical operations due to their excellent oil resistance, chemical corrosion resistance, and mechanical strength. Current nitrile gloves are typically made from nitrile latex as the main raw material through an impregnation molding process. However, with the continuous expansion of application scenarios, especially in electronics manufacturing and explosion-proof environments, higher requirements are being placed on the antistatic performance of gloves. Traditional nitrile gloves, being a high-molecular insulating material, have a high surface resistivity and are prone to accumulating static electricity during use, potentially leading to electrostatic discharge risks, affecting product quality, and even endangering workplace safety.

[0003] In existing technologies, methods to improve the antistatic properties of nitrile gloves mostly involve directly adding antistatic agents such as carbon black, metal powders, or conductive polymers to the latex system. However, these antistatic materials generally suffer from poor dispersibility and insufficient compatibility with nitrile latex, easily agglomerating and settling in the latex system. This leads to uneven film formation, decreased mechanical properties, and even affects the gloves' corrosion resistance and aging resistance. Furthermore, some inorganic or petroleum-based antistatic materials pose an environmental burden during production and use, failing to meet current requirements for green manufacturing and sustainable development.

[0004] In recent years, biomass conversion materials have attracted attention due to their wide availability, tunable structure, and rich surface functional groups. These materials are typically obtained from natural biomass through chemical or physical conversion and possess good hydrophilicity and modifiability. Introducing biomass conversion materials into nitrile latex systems, through surface functionalization or interfacial synergistic effects, allows them to form a stable dispersion structure within the latex. This enables the construction of effective antistatic pathways without compromising the original mechanical and corrosion-resistant properties of nitrile gloves.

[0005] Chinese invention patent application CN105462006A discloses an antistatic nitrile glove and its manufacturing method. The nitrile glove is mainly made of the following raw materials: 20-40 parts nitrile latex, 55-80 parts deionized water, 0.3-0.5 parts potassium hydroxide, 0.1-0.3 parts accelerator, 0.2-0.4 parts vulcanizing agent, 0.3-0.5 parts catalyst, 0-0.8 parts titanium dioxide, and 0.5-1.5 parts dispersant. The nitrile glove has the advantages of good antistatic effect and high cleanliness, but its corrosion resistance needs to be improved. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a nitrile glove with antistatic function and its processing method.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A nitrile glove with antistatic function comprises the following parts by weight of raw materials: The composition includes: 50-60 parts nitrile latex, 0.5-1 part biomass conversion material, 0.5-1.5 parts polythiophene conductive polymer, 0.2-1 part ionic liquid, 1.5-2 parts dispersant, 1.5-2 parts sulfur, 0.8-1 part accelerator, 1.2-1.5 parts corrosion resistant agent, 1-2 parts antioxidant, 0.5-1.5 parts glycerin, 2-3 parts zinc oxide, and 0.3-1 part stearic acid. The dispersant is prepared by the following method: S1: Dodecyl heptaethylene glycol ether reacts with 2-(6-bromohexyl)ethylene oxide to generate intermediate 1. S2: Intermediate 1 reacts with dodecyl dimethyl tertiary amine to form a quaternary ammonium salt compound. S3: Quaternary ammonium salt compounds react with sodium dimethyl isophthalate-5-sulfonate to form a dispersant.

[0008] In step S1, the molar ratio of dodecyl heptaethylene glycol ether to 2-(6-bromohexyl)ethylene oxide is 1:(1.05-1.1).

[0009] In step S2, the molar ratio of intermediate 1 to dodecyl dimethyl tertiary amine is 1:(1.02-1.08).

[0010] In step S3, the molar ratio of the quaternary ammonium salt compound to sodium dimethyl isophthalate-5-sulfonate is (2.03-2.1):1.

[0011] The corrosion resistant agent is prepared by the following method: A1: 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane reacts with 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole to form a four-armed compound. A2: The four-armed compound reacts with 1,1,2,2-tetrahydroperfluorododecyl alcohol to form a corrosion resistant agent.

[0012] In step A1, the molar ratio of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane to 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole is 1:4.02.

[0013] In step A2, the molar ratio of the four-armed compound to 1,1,2,2-tetrahydroperfluorododecyl alcohol is 1:4.05.

[0014] The antioxidant is antioxidant 1076.

[0015] The promoter is one of promoter TMTD and promoter BZ, the biomass conversion material is nanocellulose, and the ionic liquid is 1-butyl-3-methylimidazolium tetrafluoroborate.

[0016] A method for processing nitrile gloves with antistatic function includes the following steps: (1) Weigh out the following by weight: 50-60 parts of nitrile latex, 0.5-1 part of biomass conversion material, 0.5-1.5 parts of polythiophene conductive polymer, 0.2-1 part of ionic liquid, 1.5-2 parts of dispersant, 1.5-2 parts of sulfur, 0.8-1 part of accelerator, 1.2-1.5 parts of corrosion resistant agent, 1-2 parts of antioxidant, 0.5-1.5 parts of glycerin, 2-3 parts of zinc oxide, and 0.3-1 part of stearic acid; (2) Mix nitrile latex, biomass conversion material, polythiophene conductive polymer, ionic liquid, dispersant, sulfur, accelerator, corrosion resistant agent, antioxidant, glycerin, zinc oxide and stearic acid, pre-vulcanize, and let stand at room temperature to obtain mature latex. (3) Clean the mold and dry it; immerse it in calcium nitrate solution and dry it; immerse it in mature latex and dry it; filter it; dry and vulcanize it, and demold it to obtain nitrile gloves.

[0017] Due to the adoption of the above technical solutions, the beneficial effects of the present invention include: The nitrile gloves prepared by this invention have excellent antistatic properties, mechanical properties and corrosion resistance. The added nanoscale biomass materials have extremely high specific strength and modulus, and can form a dense reinforcing network in the latex matrix, which significantly improves the tensile strength and corrosion resistance of the gloves. At the same time, their natural hydrophilicity and porous structure help to regulate the breathability and wearing comfort of the gloves. Attached Figure Description

[0018] Figure 1 The proton NMR spectrum of intermediate 1 prepared in step S1 of Example 1; Figure 2 The 1H NMR spectrum of the quaternary ammonium salt compound prepared in step S2 of Example 1; Figure 3 The 1H NMR spectrum of the dispersant prepared in step S3 of Example 1; Figure 4 This is a high-resolution mass spectrum of the dispersant prepared in step S3 of Example 1; Figure 5 The 1H NMR spectrum of the four-armed compound prepared in step A1 of Example 4; Figure 6 The 1H NMR spectrum of the corrosion resistant agent prepared in step A2 of Example 4; Figure 7 This is a high-resolution mass spectrum of the corrosion resistant agent prepared in step A2 of Example 4. Detailed Implementation

[0019] The following description, in conjunction with specific embodiments, provides further details, but the present invention is not limited to these embodiments.

[0020] Example 1: Preparation of dispersant: S1: Under nitrogen protection, 400 ml of toluene and 0.105 mol of 2-(6-bromohexyl)ethylene oxide were added to the reactor. The temperature was raised to 50 °C, and the mixture was stirred until homogeneous. Then, 0.1 mol of dodecyl heptaethylene glycol ether was added, and the mixture was stirred until homogeneous. At 50 °C, 10 ml of a toluene solution containing 0.7 g of boron trifluoride ether was slowly added dropwise over 20 min. After the addition was complete, the temperature was raised to 90 °C and reacted for 6 h. Then, the temperature was lowered to 0 °C, and saturated sodium bicarbonate solution was slowly added dropwise to adjust the pH to 7. The mixture was allowed to stand and separate into layers. The aqueous phase was discarded, and the organic phase was taken and washed twice with saturated brine (100 ml each time). 600 ml of cyclohexane was added, and the mixture was stirred to precipitate the precipitate. The precipitate was then washed three times with cyclohexane (50 ml each time) and dried under vacuum at 40 °C for 12 h to obtain intermediate 1. The reaction equation is shown below:

[0021] Its proton nuclear magnetic resonance spectrum is as follows Figure 1 As shown, its proton NMR spectrum data are as follows: 1 H NMR (400 MHz, Chloroform- d ) δ 3.94 – 3.87 (m, 2H), 3.75 – 3.61 (m, 28H), 3.55 – 3.34 (m,5H), 3.11 (d, J = 6.1 Hz, 1H), 1.90 – 1.80 (m, 2H), 1.70 – 1.20 (m, 28H),0.93 – 0.85 (m, 3H); HRMS (m / z):701.4132[M+H] + .

[0022] S2: Under nitrogen protection, 600 ml of acetonitrile and 0.1 mol of intermediate 1 were added to the reactor and stirred at room temperature for 5 min. Then, 0.102 mol of dodecyl dimethyl tertiary amine was slowly added dropwise over 20 min. After the addition was complete, the temperature was raised to 60 °C and reacted for 8 h. Then, the mixture was distilled under reduced pressure at 50 °C for 1.5 h. The solid was then slowly added to 500 ml of diethyl ether, stirred, and filtered. The solid was washed three times with diethyl ether (100 ml of diethyl ether each time) and dried under vacuum at 50 °C for 12 h to obtain the quaternary ammonium salt compound. The reaction equation is shown below:

[0023] Its proton nuclear magnetic resonance spectrum is as follows Figure 2 As shown, its proton NMR spectrum data are as follows: 1 H NMR (400 MHz, Chloroform- d ) δ 3.94 – 3.87 (m, 2H), 3.74 – 3.60 (m, 28H), 3.56 – 3.35 (m,7H), 3.26 (s, 6H), 3.11 (d, J = 6.0 Hz, 1H), 1.81 – 1.21 (m, 50H), 0.95 –0.84 (m, 6H); HRMS (m / z):834.7385[M-Br] + .

[0024] S3: Under nitrogen protection, 1000 mL of anhydrous DMSO (dimethyl sulfoxide), 0.203 mol of quaternary ammonium salt compound, 0.1 mol of sodium dimethyl isophthalate-5-sulfonate, and 0.001 mol of dibutyltin oxide were added to the reactor. The mixture was stirred and stirred until homogeneous. After reacting at 120 °C for 6 h (methanol was removed using a Dean-Stark apparatus during the reaction), the mixture was cooled to room temperature. Under vigorous stirring, the reaction solution was slowly added dropwise to 1500 mL of diethyl ether. The solid precipitated by stirring was filtered, washed three times with diethyl ether (150 mL each time), and dried under vacuum at 60 °C for 12 h to obtain the dispersant. The reaction equation is shown below:

[0025] Its proton nuclear magnetic resonance spectrum is as follows Figure 3 As shown, its proton NMR spectrum data are as follows: 1 H NMR (400 MHz, Chloroform- d δ 8.57 (t, J = 2.2 Hz, 1H), 8.20 (d, J = 2.2 Hz, 2H), 4.94 (tt, J = 6.7, 4.9 Hz, 2H), 4.07 – 3.97 (m, 4H), 3.89 – 3.80 (m, 6H), 3.73 – 3.55 (m, 50H), 3.50 (t, J = 6.1 Hz, 4H), 3.43 (t, J = 8.6 Hz, 8H), 3.26 (s, 12H), 1.88 – 1.23 (m, 100H), 0.93 – 0.85 (m, 12H); its high-resolution mass spectrum is as follows: Figure 4 As shown, HRMS (m / z): 1879.4371 [M-2Br-Na]+ .

[0026] Example 2: Preparation of dispersant: S1: Under nitrogen protection, 400 ml of toluene and 0.108 mol of 2-(6-bromohexyl)ethylene oxide were added to the reactor. The temperature was raised to 50 °C, and the mixture was stirred and mixed. Then, 0.1 mol of dodecyl heptaethylene glycol ether was added, and the mixture was stirred and mixed. At 50 °C, 10 ml of toluene solution containing 0.7 g of boron trifluoride ether was slowly added dropwise over 20 min. After the addition was completed, the temperature was raised to 95 °C and reacted for 5.5 h. Then, the temperature was lowered to 0 °C, and saturated sodium bicarbonate solution was slowly added dropwise to adjust the pH to 7. The mixture was allowed to stand and separate into layers. The aqueous phase was discarded, and the organic phase was taken and washed twice with saturated brine (100 ml each time). 600 ml of cyclohexane was added, and the mixture was stirred to precipitate the precipitate. The precipitate was then washed three times with cyclohexane (50 ml each time). The mixture was dried under vacuum at 40 °C for 12 h to obtain intermediate 1.

[0027] S2: Under nitrogen protection, 600 ml of acetonitrile and 0.1 mol of intermediate 1 were added to the reactor and stirred at room temperature for 5 min. Then, 0.105 mol of dodecyl dimethyl tertiary amine was slowly added dropwise over 20 min. After the addition was complete, the temperature was raised to 65 °C and reacted for 7 h. Then, the mixture was distilled under reduced pressure at 50 °C for 1.5 h. The solid was then slowly added to 500 ml of diethyl ether, stirred, and filtered. The solid was washed three times with diethyl ether (100 ml of diethyl ether was used each time) and dried under vacuum at 50 °C for 12 h to obtain the quaternary ammonium salt compound.

[0028] S3: Under nitrogen protection, 1000 mL of anhydrous DMSO, 0.205 mol of quaternary ammonium salt compound, 0.1 mol of sodium dimethyl isophthalate-5-sulfonate, and 0.001 mol of dibutyltin oxide were added to the reactor. The mixture was stirred and mixed, and the temperature was raised to 125 °C for 5 h (methanol was removed during the reaction using a Dean-Stark apparatus). After cooling to room temperature, the reaction solution was slowly added dropwise to 1500 mL of diethyl ether under vigorous stirring. The solid was stirred and precipitated, filtered, washed three times with diethyl ether (150 mL each time), and dried under vacuum at 60 °C for 12 h to obtain the dispersant.

[0029] Example 3: Preparation of dispersant: S1: Under nitrogen protection, 400 ml of toluene and 0.11 mol of 2-(6-bromohexyl)ethylene oxide were added to the reactor. The temperature was raised to 50 °C, and the mixture was stirred and mixed. Then, 0.1 mol of dodecyl heptaethylene glycol ether was added, and the mixture was stirred and mixed. At 50 °C, 10 ml of toluene solution containing 0.7 g of boron trifluoride ether was slowly added dropwise over 20 min. After the addition was completed, the temperature was raised to 100 °C and reacted for 5 h. Then, the temperature was lowered to 0 °C, and saturated sodium bicarbonate solution was slowly added dropwise to adjust the pH to 7. The mixture was allowed to stand and separate into layers. The aqueous phase was discarded, and the organic phase was taken and washed twice with saturated brine (100 ml each time). 600 ml of cyclohexane was added, and the mixture was stirred to precipitate the precipitate. The precipitate was then washed three times with cyclohexane (50 ml each time). The mixture was dried under vacuum at 40 °C for 12 h to obtain intermediate 1.

[0030] S2: Under nitrogen protection, 600 ml of acetonitrile and 0.1 mol of intermediate 1 were added to the reactor and stirred at room temperature for 5 min. Then, 0.108 mol of dodecyl dimethyl tertiary amine was slowly added dropwise over 20 min. After the addition was complete, the temperature was raised to 70 °C and reacted for 6 h. Then, the mixture was distilled under reduced pressure at 50 °C for 1.5 h. The solid was then slowly added to 500 ml of diethyl ether, stirred, and filtered. The solid was washed three times with diethyl ether (100 ml of diethyl ether was used each time) and dried under vacuum at 50 °C for 12 h to obtain the quaternary ammonium salt compound.

[0031] S3: Under nitrogen protection, 1000 mL of anhydrous DMSO, 0.21 mol of quaternary ammonium salt compound, 0.1 mol of sodium dimethyl isophthalate-5-sulfonate, and 0.001 mol of dibutyltin oxide were added to the reactor. The mixture was stirred and mixed, and the temperature was raised to 130 °C for 4 h (methanol was removed using a Dean-Stark apparatus during the reaction). The mixture was then cooled to room temperature, and the reaction solution was slowly added dropwise to 1500 mL of diethyl ether under vigorous stirring. The solid was stirred and precipitated, filtered, washed three times with diethyl ether (150 mL each time), and dried under vacuum at 60 °C for 12 h to obtain the dispersant.

[0032] Example 4: Preparation of corrosion resistance agent: A1: Under nitrogen protection, add 800 ml of toluene, 0.1 mol of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, 0.402 mol of 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole, and 1.0 g of photoinitiator 184 to the reactor, stir and mix thoroughly, and incubate at room temperature with an intensity of 8.4 mW / cm². 2 After irradiation under a 365nm UV LED lamp for 4 hours, the mixture was distilled under reduced pressure at 70℃ for 2 hours. The solution was then slowly poured into 500mL of cold diethyl ether, stirred, and a precipitate was formed. The precipitate was filtered, washed three times with 100mL of cold diethyl ether each time, and dried under vacuum at 40℃ for 12 hours to obtain the four-armed compound. The reaction equation is shown below:

[0033] Its proton nuclear magnetic resonance spectrum is as follows Figure 5 As shown, its proton NMR spectrum data are as follows: 1 H NMR (400 MHz, Chloroform- d ) δ 12.23 (s, 4H), 8.02 – 7.95 (m, 8H), 7.83 – 7.77 (m, 8H), 3.29 (t, J = 8.4 Hz, 8H), 1.19 (t, J = 8.4 Hz, 8H), 0.06 (s, 12H); HRMS (m / z):1233.1599[M+H] + .

[0034] A2: Under nitrogen protection, 1000 ml of dichloromethane, 0.1 mol of the four-arm compound, 0.41 mol of N,N'-dicyclohexylcarbodiimide, and 0.01 mol of 4-dimethylaminopyridine were added to the reactor and stirred for 10 min. Then, 0.405 mol of 1,1,2,2-tetrahydroperfluorododecyl alcohol was added, and the reaction was carried out at room temperature for 12 h. The mixture was filtered, and the filtrate was washed successively with 150 ml of 1 wt% dilute hydrochloric acid, 150 ml of saturated sodium bicarbonate solution, and 150 ml of saturated brine. The filtrate was dried over 40 g of anhydrous sodium sulfate, filtered, and distilled under reduced pressure at 30 °C for 1 h. The filtrate was purified by silica gel column chromatography (using a petroleum ether / ethyl acetate mixed solution as the eluent, with a petroleum ether / ethyl acetate volume ratio of 5:1 to 10:1 gradient elution). The filtrate was then distilled under reduced pressure at 50 °C for 1.5 h and dried under vacuum at 50 °C for 12 h to obtain the corrosion-resistant agent. The reaction equation is shown below.

[0035] Its proton nuclear magnetic resonance spectrum is as follows Figure 6 As shown, its proton NMR spectrum data are as follows: 1 H NMR (400 MHz, Chloroform- d δ 8.04 – 8.00 (m, 8H), 7.98 – 7.93 (m, 8H), 4.40 (tt, J = 6.5, 2.7 Hz, 8H), 3.29 (t, J = 8.4 Hz, 8H), 2.78 – 2.58 (m, 8H), 1.19 (t, J = 8.4Hz, 8H), 0.06 (s, 12H); its high-resolution mass spectrum is shown below. Figure 7 As shown, HRMS (m / z): 3417.1188 [M+H] + .

[0036] Example 5: Preparation of nitrile gloves: (1) Weigh out: 500g of nitrile latex, 5g of biomass conversion material (nanocellulose), 5g of polythiophene conductive polymer, 2g of ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate), 15g of dispersant (prepared in Example 1), 15g of sulfur, 8g of accelerator (accelerator TMTD), 12g of corrosion resistant agent (prepared in Example 4), 10g of antioxidant (antioxidant 1076), 5g of glycerin, 20g of zinc oxide, and 3g of stearic acid; (2) Mix nitrile latex, biomass conversion material, polythiophene conductive polymer, ionic liquid, dispersant, sulfur, accelerator, corrosion resistant agent, antioxidant, glycerin, zinc oxide and stearic acid, heat to 40℃ for pre-vulcanization for 2 hours, and then let stand at room temperature for 48 hours to obtain mature latex. (3) The mold was cleaned with 100ml of anhydrous ethanol and 100ml of deionized water in sequence and then dried at 100℃ for 1h; it was immersed in 20wt% calcium nitrate aqueous solution for 10s and dried at 90℃ for 5min; it was immersed in cured latex for 10s and then placed in an oven at 80℃ for 10min; it was placed in deionized water at 40℃ for 30s; it was placed in an oven at 120℃ for 40min for vulcanization, and then naturally cooled to room temperature and demolded to obtain nitrile gloves.

[0037] Example 6 Preparation of nitrile gloves: (1) Weigh out: 550g of nitrile latex, 8g of biomass conversion material (nanocellulose), 10g of polythiophene conductive polymer, 6g of ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate), 18g of dispersant (prepared in Example 2), 18g of sulfur, 9g of accelerator (accelerator TMTD), 13g of corrosion resistant agent (prepared in Example 4), 15g of antioxidant (antioxidant 1076), 10g of glycerin, 25g of zinc oxide, and 6g of stearic acid; (2) Mix nitrile latex, biomass conversion material, polythiophene conductive polymer, ionic liquid, dispersant, sulfur, accelerator, corrosion resistant agent, antioxidant, glycerin, zinc oxide and stearic acid, heat to 40℃ for pre-vulcanization for 2 hours, and then let stand at room temperature for 48 hours to obtain mature latex. (3) The mold was cleaned with 100ml of anhydrous ethanol and 100ml of deionized water in sequence and then dried at 100℃ for 1h; it was immersed in 20wt% calcium nitrate aqueous solution for 10s and dried at 90℃ for 5min; it was immersed in cured latex for 10s and then placed in an oven at 80℃ for 10min; it was placed in deionized water at 40℃ for 30s; it was placed in an oven at 120℃ for 40min for vulcanization, and then naturally cooled to room temperature and demolded to obtain nitrile gloves.

[0038] Example 7 Preparation of nitrile gloves: (1) Weigh out: 600g of nitrile latex, 10g of biomass conversion material (nanocellulose), 15g of polythiophene conductive polymer, 10g of ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate), 20g of dispersant (prepared in Example 3), 20g of sulfur, 10g of accelerator (accelerator BZ), 15g of corrosion resistant agent (prepared in Example 4), 20g of antioxidant (antioxidant 1076), 15g of glycerin, 30g of zinc oxide, and 10g of stearic acid; (2) Mix nitrile latex, biomass conversion material, polythiophene conductive polymer, ionic liquid, dispersant, sulfur, accelerator, corrosion resistant agent, antioxidant, glycerin, zinc oxide and stearic acid, heat to 40℃ for pre-vulcanization for 2 hours, and then let stand at room temperature for 48 hours to obtain mature latex. (3) The mold was cleaned with 100ml of anhydrous ethanol and 100ml of deionized water in sequence and then dried at 100℃ for 1h; it was immersed in 20wt% calcium nitrate aqueous solution for 10s and dried at 90℃ for 5min; it was immersed in cured latex for 10s and then placed in an oven at 80℃ for 10min; it was placed in deionized water at 40℃ for 30s; it was placed in an oven at 120℃ for 40min for vulcanization, and then naturally cooled to room temperature and demolded to obtain nitrile gloves.

[0039] Comparative Example 1 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the dispersant is replaced with an equal mass of a dispersant prepared by the following method: The preparation method of the dispersant is basically the same as that in Example 2, except that the dodecyl heptaethylene glycol ether in step S1 is replaced with an equimolar amount of dodecyl diethylene glycol ether.

[0040] Comparative Example 2 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the dispersant is replaced with an equal mass of a dispersant prepared by the following method: The preparation method of the dispersant is basically the same as that in Example 2, except that the dodecyl heptaethylene glycol ether in step S1 is replaced with an equimolar amount of dodecyl alcohol.

[0041] Comparative Example 3 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the dispersant is replaced with an equal mass of a dispersant prepared by the following method: The preparation method of the dispersant is basically the same as that in Example 2, except that 2-(6-bromohexyl)ethylene oxide in step S1 is replaced with an equimolar amount of epoxybromopropane.

[0042] Comparative Example 4 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the dispersant is replaced with an equal mass of a dispersant prepared by the following method: The preparation method of the dispersant is basically the same as that in Example 2, except that the dodecyl dimethyl tertiary amine in step S2 is replaced with an equimolar amount of N,N-dimethylhexylamine.

[0043] Comparative Example 5 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the corrosion resistance agent is replaced with an equal mass of corrosion resistance agent prepared by the following method: The preparation method of the corrosion resistant agent is basically the same as that in Example 4, except that 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane in step A1 is replaced with an equimolar amount of 1,3-dimethyl-1,1,3,3-tetravinyldisiloxane.

[0044] Comparative Example 6 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the corrosion resistance agent is replaced with an equal mass of corrosion resistance agent prepared by the following method: The preparation method of the corrosion resistant agent is basically the same as that in Example 4, except that 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole in step A1 is replaced with an equimolar amount of 4-mercaptobenzoic acid.

[0045] Comparative Example 7 The raw material composition and preparation method of the nitrile gloves are basically the same as those in Example 6, except that the corrosion resistance agent is replaced with an equal mass of corrosion resistance agent prepared by the following method: The preparation method of the corrosion resistant agent is basically the same as that in Example 4, except that 1,1,2,2-tetrahydroperfluorododecyl alcohol in step A2 is replaced with an equimolar amount of perfluorobutyl ethanol.

[0046] The nitrile latex used in the embodiments and comparative examples of this application is model TC-N135R, with a solid content of 44wt%, and is produced by Zhejiang Tianchen Adhesive Industry Co., Ltd.; the sulfur is S-80 type special sulfur powder produced by Qingdao Luchuan Chemical Co., Ltd., with a mesh size of 400; the polythiophene conductive polymer is model Clevios. TM pH 1000; the nanocellulose is model XFJ180, produced by Jiangsu Xianfeng Nanomaterials Technology Co., Ltd.

[0047] The nitrile gloves prepared in Examples 5-7 and Comparative Examples 1-7 of this application were subjected to antistatic performance, tensile strength, elongation at break and corrosion resistance tests. The test results are shown in Table 1.

[0048] Antistatic performance test: Cut a sample of the glove with dimensions of 10cm × 10cm × 0.1mm and test it according to BS EN16350. The test was conducted according to the 2014 standard, equilibrated for 24 hours at 25°C and 45% humidity, and the vertical resistance was then tested.

[0049] Tensile strength and elongation at break tests: The tests were conducted in accordance with GB / T 528-2009. The gloves were cut into dumbbell-shaped specimens of type 1A. The test temperature was 23℃ and the tensile speed was 100mm / min.

[0050] Tensile strength retention rate test: Place the samples into wide-mouth glass bottles containing 500ml of 5wt% hydrochloric acid solution, tighten the caps, and place them in a constant temperature environment of 23±2℃ in the dark for 48h. Test the tensile strength of the samples before and after soaking according to GB / T 528-2009, and calculate the tensile strength retention rate. The calculation formula is: Tensile strength retention rate = (tensile strength after soaking / tensile strength before soaking) × 100%.

[0051] Table 1 Performance Test Table for Nitrile Gloves

[0052] As can be seen from Examples 5, 6 and 7 in Table 1, the nitrile gloves of the present invention have excellent antistatic properties, mechanical properties and corrosion resistance.

[0053] The dispersant prepared in this invention uses isophthalate as a rigid core, flanked by long-chain quaternary ammonium alkyl groups and polyethylene glycol segments, exhibiting an axisymmetric structure. This facilitates uniform dispersion in nitrile rubber and enhances its mechanical properties. The long alkyl chains and polyethylene glycol chains synergistically form an amphiphilic structure. The long alkyl chains are firmly anchored to the hydrophobic segments of the nitrile latex through van der Waals forces and chain entanglement, ensuring stable adsorption of the dispersant on the particle surface. The polyethylene glycol chains extend into the aqueous phase, providing steric hindrance. Together, they construct an "anchoring-extension" protective layer, significantly inhibiting emulsion particle aggregation and promoting uniform film formation, thus avoiding stress concentration caused by defects. The quaternary ammonium cations and sulfonic acid anions synergistically form an electrostatic ionic network. The quaternary ammonium cations adsorb onto the negatively charged surface of the filler, while the sulfonic acid anions form ion pairs with the polar groups of the nitrile latex. This synergistic effect enhances interfacial adhesion, dissipates energy under high strain, prevents rapid microcrack propagation, and ultimately improves elongation at break. Ester groups serve as flexible connecting points, allowing for dynamic adjustment of molecular conformation and absorption of external stress; the synergistic effect of multiple functional groups optimizes the filler-matrix interface, ensuring the long-term stability of the gloves under repeated bending and stretching.

[0054] In Comparative Example 2, when dodecyl heptaethylene glycol ether was replaced with dodecyl alcohol in step S1, the dispersant used lost the hydrophilic and flexible segments of polyethylene glycol, thus lacking the steric hindrance and spatial extension ability of the polyether chain, making the filler particles prone to agglomeration and uneven dispersion; the molecular flexibility decreased, and it could not effectively alleviate the stress concentration in the film; resulting in an increase in vulcanization network defects in the nitrile film, uneven stress distribution, decreased tensile strength, and reduced elongation at break.

[0055] The corrosion resistant agent prepared in this invention has a four-armed star structure with cyclotetrasiloxane as the core. Each arm is connected to a tetrazolium-containing benzene ring via a thioether bond, and a long-chain perfluoroalkyl group is grafted at the ester bond end. The perfluoroalkyl chain and the cyclotetrasiloxane core synergistically form a low surface energy-flexible composite structure. The perfluoroalkyl chain has extremely strong hydrophobicity, oleophobicity, and chemical inertness, spontaneously enriching on the surface of the adhesive film to form a dense fluorinated layer, significantly reducing surface tension and inhibiting the wetting and diffusion of corrosive media. The cyclotetrasiloxane provides the flexibility and heat resistance of the Si-O-Si skeleton, ensuring that the fluorinated layer is not prone to cracking under stress or temperature changes. Together, they construct a durable physical barrier, blocking the penetration of corrosive media into the polymer interior. The tetrazolium group provides coordination through the heteroatoms of the nitrogen heterocycle, which can inhibit localized corrosion and enhance the interfacial compatibility with the nitrile group of the nitrile rubber latex. The tetrazolium group, the perfluoroalkyl chain, and the cyclotetrasiloxane together form a chemical-physical dual protection, improving broad-spectrum resistance to both polar and non-polar corrosive media. Benzene rings and thioether bonds act as connecting bridges, enhancing dispersion and anchoring in nitrile latex through π-π stacking and van der Waals forces, thus avoiding defects caused by phase separation. The synergistic effect of these functional groups ultimately generates a microstructure of a fluorine-rich film with a uniform internal structure, significantly slowing down the penetration and degradation rate of corrosive media and improving corrosion resistance.

[0056] In Comparative Example 5, replacing 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane with 1,3-dimethyl-1,1,3,3-tetravinyldisiloxane resulted in a decrease in corrosion resistance. This is because the cyclic structure possesses a symmetrical and compact rigid eight-membered Si-O ring framework, allowing the four arms to extend radially, forming a spherical star-shaped topology. This facilitates the efficient migration and enrichment of perfluoroalkyl chains to the surface of nitrile latex, constructing a uniform and dense low surface energy barrier. Furthermore, the high branching degree and steric hindrance enhance the physical entanglement and anchoring stability with the matrix. In contrast, the linear short-chain disiloxane structure results in a flexible chain structure, prone to coiling and entanglement. This leads to some fluorine chains being buried within the material, reducing surface fluorine content and barrier density. Simultaneously, the lack of rigid multidirectional support from the cyclic structure results in weaker interaction with the matrix, making migration or phase separation more likely. Therefore, the nitrile gloves exhibit reduced resistance to acid and alkali penetration and solvent swelling.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. However, any modifications, alterations, and variations made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A nitrile glove with antistatic function, characterized in that, The ingredients include the following parts by weight: The composition includes: 50-60 parts nitrile latex, 0.5-1 part biomass conversion material, 0.5-1.5 parts polythiophene conductive polymer, 0.2-1 part ionic liquid, 1.5-2 parts dispersant, 1.5-2 parts sulfur, 0.8-1 part accelerator, 1.2-1.5 parts corrosion resistant agent, 1-2 parts antioxidant, 0.5-1.5 parts glycerin, 2-3 parts zinc oxide, and 0.3-1 part stearic acid. The dispersant is prepared by the following method: S1: Dodecyl heptaethylene glycol ether reacts with 2-(6-bromohexyl)ethylene oxide to generate intermediate 1. S2: Intermediate 1 reacts with dodecyl dimethyl tertiary amine to form a quaternary ammonium salt compound. S3: Quaternary ammonium salt compounds react with sodium dimethyl isophthalate-5-sulfonate to form a dispersant.

2. A nitrile glove with antistatic function according to claim 1, characterized in that, In step S1, the molar ratio of dodecyl heptaethylene glycol ether to 2-(6-bromohexyl)ethylene oxide is 1:(1.05-1.1).

3. A nitrile glove with antistatic function according to claim 1, characterized in that, In step S2, the molar ratio of intermediate 1 to dodecyl dimethyl tertiary amine is 1:(1.02-1.08).

4. A nitrile glove with antistatic function according to claim 1, characterized in that, In step S3, the molar ratio of the quaternary ammonium salt compound to sodium dimethyl isophthalate-5-sulfonate is (2.03-2.1):

1.

5. A nitrile glove with antistatic function according to claim 1, characterized in that, The corrosion resistant agent is prepared by the following method: A1: 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane reacts with 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole to form a four-armed compound. A2: The four-armed compound reacts with 1,1,2,2-tetrahydroperfluorododecyl alcohol to form a corrosion resistant agent.

6. A nitrile glove with antistatic function according to claim 5, characterized in that, In step A1, the molar ratio of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane to 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole is 1:4.

02.

7. A nitrile glove with antistatic function according to claim 5, characterized in that, In step A2, the molar ratio of the four-armed compound to 1,1,2,2-tetrahydroperfluorododecyl alcohol is 1:4.

05.

8. A nitrile glove with antistatic function according to claim 1, characterized in that, The antioxidant is antioxidant 1076.

9. A nitrile glove with antistatic function according to claim 1, characterized in that, The promoter is one of promoter TMTD and promoter BZ, the biomass conversion material is nanocellulose, and the ionic liquid is 1-butyl-3-methylimidazolium tetrafluoroborate.

10. A method for processing a nitrile glove with antistatic function as described in any one of claims 1-9, characterized in that, Includes the following steps: (1) Weigh out the following by weight: 50-60 parts of nitrile latex, 0.5-1 part of biomass conversion material, 0.5-1.5 parts of polythiophene conductive polymer, 0.2-1 part of ionic liquid, 1.5-2 parts of dispersant, 1.5-2 parts of sulfur, 0.8-1 part of accelerator, 1.2-1.5 parts of corrosion resistant agent, 1-2 parts of antioxidant, 0.5-1.5 parts of glycerin, 2-3 parts of zinc oxide, and 0.3-1 part of stearic acid; (2) Mix nitrile latex, biomass conversion material, polythiophene conductive polymer, ionic liquid, dispersant, sulfur, accelerator, corrosion resistant agent, antioxidant, glycerin, zinc oxide and stearic acid, pre-vulcanize, and let stand at room temperature to obtain mature latex. (3) Clean the mold and dry it; immerse it in calcium nitrate solution and dry it; immerse it in mature latex and dry it; filter it; dry and vulcanize it, and demold it to obtain nitrile gloves.

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