Chemical-defense and cutting-prevention composite flocked glove and preparation method

Abstract

The invention belongs to the technical field of labor protection articles, and particularly relates to a chemical-defense and cutting-prevention composite flocking glove and a preparation method thereof.The chemical-defense and cutting-prevention composite flocking glove comprises a flocking layer, an elastic layer, a cutting-prevention layer and a chemical-defense layer which are sequentially arranged in a composite mode from inside to outside; the rubber components of the chemical protection layer comprise water-based butyl latex, channel carbon black, 2402 tert-butyl phenolic vulcanized resin and stannous chloride; the anti-cutting layer is formed by weaving para-aramid fibers in a ten-needle knitting structure; the rubber components of the elastic layer comprise neoprene latex, a tackifying modifier, nano silicon dioxide and an antioxidant; the flocking layer is formed by vertically implanting cellulose linters through water-based flocking latex and fixing the cellulose linters on the inner surface of the elastic layer. The problem that a traditional single-function glove is limited in protection is solved, common hidden dangers such as interlayer stripping and slippage in a multi-layer composite structure are overcome, and the comprehensive protection capacity of the glove in a complex high-risk environment is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the technical field of labor protection products, specifically relating to a chemical-resistant and cut-resistant composite flocked glove and its preparation method. Background Technology

[0002] In high-risk work environments such as chemical processing, machining, laboratory operations, and emergency rescue, operators' hands are frequently exposed to multiple occupational hazards, including chemical corrosion, sharp object cuts, and punctures. Therefore, multifunctional composite gloves that combine efficient chemical protection, reliable mechanical protection, and comfortable long-term wear have become an important development direction in the field of personal protective equipment.

[0003] Currently, most protective gloves on the market focus on a single function. Traditional chemical-resistant gloves typically have a linerless structure, relying on rubber materials such as butyl rubber and neoprene rubber for chemical barrier. However, the rubber layer itself lacks sufficient mechanical strength and is easily torn or punctured by sharp objects. Once the outer layer is damaged, chemical hazards will directly contact the skin. On the other hand, cut-resistant gloves often rely on high-performance fibers such as ultra-high molecular weight polyethylene (UHMWPE) and aramid (such as Kevlar) to weave the liner for protection. However, these fiber fabrics themselves do not have chemical-resistant capabilities. Simply combining a cut-resistant liner with a chemical-resistant rubber layer often results in poor interlayer adhesion due to poor compatibility between different materials (such as rubber and fabric) and mismatched coefficients of thermal expansion. This can easily lead to delamination, slippage, or even peeling during use, seriously affecting the reliability and service life of the protection. To address the above issues, existing multi-functional protective gloves have explored the following technical approaches: The first type of inner liner structure, such as patent document CN116420953A - a chemical and cut-resistant cotton fleece glove and its preparation method, uses two layers of the same rubber material (natural rubber or synthetic rubber) to sandwich an independent cut-resistant glove inner liner, and embeds the cotton fleece layer by spraying to improve comfort. Although this structure has both basic chemical and cut-resistant functions, the inner and outer rubber layers are made of the same material, and the chemical resistance (especially against strong acids, strong alkalis and organic solvents) is limited; moreover, the interlayer bonding mainly relies on external adhesives and mechanical bonding, which is prone to interlayer slippage or peeling under complex stress or long-term chemical media.

[0004] The second type is a multi-layer impregnated composite structure, such as patent document CN113861528A - a method for preparing chemical and cut-resistant unlined gloves. This method employs an unlined design, integrating functionality by dispersing cut-resistant substances (such as magnesium borate whiskers) into nitrile latex and repeatedly impregnating it with different latexes (such as neoprene, nitrile, and natural latex). While this method achieves a certain degree of cut and chemical resistance, its cut-resistant function depends on the uniform dispersion of fillers in the adhesive layers, making it difficult to achieve a high level of protection (such as European standard cut resistance level, such as level 3) and exhibiting insufficient stability. Furthermore, due to differences in material composition and shrinkage rates between the multiple adhesive layers, there are issues with weak interfacial bonding and easy delamination.

[0005] The third type is a composite coating technology specifically designed for mechanical protection. For example, patent document CN120682501A – a manufacturing process for cut- and puncture-resistant protective gloves – employs advanced processes such as nano-ceramic composite coating, zoned impregnation, and differentiated vulcanization. While these gloves offer excellent mechanical protection, they typically lack optimized chemical barrier properties, and their structural design rarely considers the moisture-wicking and comfort of the inner layer, making them unsuitable for scenarios requiring dual protection, such as those involving chemical processing.

[0006] In summary, existing multi-layer protective gloves suffer from technical problems such as weak interlayer bonding, poor synergy between chemical and cut protection, insufficient wearing comfort, and poor environmental performance, making it difficult to meet the actual needs of high-risk work environments for efficient, composite, durable, and comfortable hand protection equipment. Summary of the Invention

[0007] The purpose of this invention is to provide a chemical and cut-resistant composite flocked glove and its preparation method, in order to solve the problems mentioned in the background art, such as the current multi-layer protective gloves being unable to meet the actual use requirements of high-risk working environments for efficient, composite, durable and comfortable hand protection equipment, and generally having problems such as weak interlayer bonding, poor synergy between chemical and cut-resistant performance, insufficient wearing comfort and poor environmental performance.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a chemical-resistant and cut-resistant composite flocked glove, comprising a flocked layer, an elastic layer, a cut-resistant layer, and a chemical-resistant layer sequentially composited from the inside out. The chemical-resistant layer comprises water-based butyl latex, channel black, 2402 tert-butylphenolic resin, and stannous chloride. The cut-resistant layer is woven from para-aramid fibers using a ten-needle knitting structure. The elastic layer comprises chloroprene latex, a tackifier, nano-silica, and an antioxidant. The flocked layer is formed by vertically implanting and fixing short cellulose fibers onto the inner surface of the elastic layer using water-based flocking latex.

[0009] Furthermore, the amount of the chemical protective layer compound, calculated based on 100 parts by weight of the water-based butyl latex, is 5-8 parts of channel black, 3-5 parts of 2402 tert-butylphenol aldehyde vulcanizing resin, and 1-3 parts of stannous chloride.

[0010] Furthermore, the areal density and thickness of the cut-resistant layer are 70-90 g / m² and 0.25-0.4 mm, respectively.

[0011] Furthermore, based on 100 parts by weight of the chloroprene latex, the amount of the tackifier modifier is 2-4 parts, the amount of the nano-silica is 1-3 parts, and the amount of the antioxidant is 2-3 parts. The tackifier modifier is 2402 tert-butylphenolic vulcanized resin, and the antioxidant is antioxidant 1010.

[0012] The specific steps for preparing the above-described chemical-resistant and cut-resistant composite flocked gloves are as follows: S1. Pre-treatment of ceramic hand mold: Heat the ceramic hand mold to 45-55℃, apply release agent and then dry the surface moisture; S2. Chemical protective layer forming: Immerse the pretreated ceramic hand mold in the chemical protective layer adhesive for 40-60 minutes, and dry it at 70-85℃ for 1-1.5 hours to form the chemical protective layer; S3, Cut-resistant layer lamination: Apply Chemlok 402 adhesive evenly to the surface of the chemical protective layer, then attach the pre-woven cut-resistant layer on top, apply pressure at 0.2-0.3 MPa, and dry at 65-75°C for 30-45 minutes; S4. Elastic layer molding: Apply Chemlok 402 adhesive evenly to the surface of the anti-cutting layer, immerse the ceramic hand mold with the chemical-resistant layer and anti-cutting layer attached into the elastic layer adhesive for 30-45 minutes, and dry it at 65-80℃ for 30-60 minutes to form the elastic layer. S5. Flocking Adhesive Coating: Immerse the ceramic hand mold with the chemical-resistant layer, cut-resistant layer and elastic layer attached into the water-based flocking adhesive latex, and control the thickness of the flocking adhesive layer between 0.1 and 0.18 mm and the surface temperature between 60 and 70°C. After removal, keep it in a semi-dry state. The water-based flocking adhesive latex includes the following raw material components by weight: 10-18 parts butyl acrylate, 5-12 parts methyl methacrylate, 2-4 parts crosslinking monomer and 30-45 parts deionized water. The solid content of the water-based flocking adhesive latex is 12-18 wt% and its viscosity is 130-180 mPa·s. S6. Electrostatic flocking: Under an 8-12kV high-voltage electric field, cellulose short fibers are vertically implanted into a semi-dry flocking adhesive layer, and dried at 60-70℃ for 45-60 minutes to obtain a preliminary glove product. The cellulose short fibers are either combed cotton short fibers or modal short fibers, and the length of the cellulose short fibers is 0.15-0.25mm. S7. Vulcanization treatment: The initial glove sample is vulcanized at a low temperature of 45-55℃ for 50-70 minutes, and then vulcanized at a high temperature of 140-150℃ for 45-55 minutes. After cooling, it is demolded to obtain the finished chemical-resistant and cut-resistant composite flocked gloves.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves the organic integration of chemical protection, mechanical cut protection, elastic fit and comfortable lining through a four-layer composite structure design of "chemical protective layer - cut-resistant layer - elastic layer - flocked layer". Each layer has a clear function and works together with each other. It not only solves the problem of the limited protection of traditional single-function gloves, but also overcomes the hidden dangers such as interlayer peeling and slippage that are common in multi-layer composite structures, and significantly improves the comprehensive protection capability of gloves in complex and high-risk environments.

[0014] 2. The chemical protective layer of this invention uses water-based butyl latex as the base material, combined with channel carbon black, 2402 tert-butylphenolic resin and stannous chloride activation system to form stable -CC- and -COC- crosslinking bonds. The chemical penetration resistance time is ≥480 minutes, and the chemical protection level reaches EN374 Type A standard, solving the problems of insufficient optimization of traditional butyl rubber vulcanization process and poor chemical protection durability. The cut protection layer uses para-aramid fiber (DuPont Kevlar), and the areal density (70~90g / m²) and thickness (0.25~0.4mm) are precisely controlled by 10-needle knitting process. It achieves European standard level 3 cut protection and avoids the defects of traditional mixed fiber lining in terms of protection level and flexibility. It ensures reliable protection under medium level cut risk. The two core protective materials are modified and adapted to the process to avoid material compatibility conflicts and achieve precise matching of chemical protection and cut protection performance. The protective effect is stable for a long time and there is no mutual weakening phenomenon.

[0015] 3. This invention employs a dual approach of "adhesive bonding + material modification" to construct a high-strength interlayer bonding system. Specifically, this invention selects Chemlok 402 heat-curing adhesive, specifically adapted to the heat-curing bonding requirements of butyl rubber, neoprene rubber, and aramid fabrics. The coating amount is precisely controlled at 8-12 g / m² to ensure the basic bonding strength. Meanwhile, 2402 tert-butylphenolic resin is added to the elastic layer as a tackifier, utilizing its excellent compatibility with neoprene rubber to simultaneously enhance the adhesion to the cut-resistant layer and flocking adhesive, forming a synergistic effect of "adhesive-material modification." Ultimately, this achieves an interlayer peel strength ≥1.6 N / 2.5 cm, and after 1000 bending tests, there is no delamination or slippage. This solves the core pain points of traditional composite gloves, such as weak interlayer bonding and short service life due to material differences.

[0016] 4. This invention achieves a synergistic improvement in protective performance and wearing experience by optimizing the flocking process and elastic layer formula. Specifically, the elastic layer of this invention uses neoprene latex as the base material, with added nano-silica and antioxidants. It has a tensile strength ≥4.0MPa and an elongation at break ≥750%, ensuring both elasticity that conforms to the hand's curves and improved durability. The flocking layer uses 0.15–0.25mm combed cotton lint or modal lint, vertically implanted into the inner surface of the elastic layer using optimized water-based flocking latex (solid content 12–8wt%, viscosity 130–180mPa・s) and an 8–12kV high-voltage electrostatic flocking process. The flocking density reaches 1200–1500 fibers / cm², improving sweat absorption and breathability by more than 30% compared to traditional gloves, effectively alleviating stuffiness. Furthermore, the flocking wet rubbing fastness is ≥50 times without shedding, solving the risk of shedding caused by the traditional flocking layer directly adhering to the chemical-resistant layer or liner. This achieves the dual requirements of "high protection + high comfort," meeting the needs of long-term work wear.

[0017] 5. This invention uses a water-based latex system (water-based butyl latex, chloroprene latex, water-based flocked latex) and low-VOC adhesives throughout the entire process, with no organic solvent volatilization, meeting environmental protection requirements. By optimizing process steps and ensuring precise control of parameters at each stage (such as segmented control of impregnation time 40-60 minutes, drying temperature 65-85℃, and vulcanization temperature 45-150℃), and through key steps such as hand mold pretreatment, layered impregnation, and segmented vulcanization, product consistency is ensured. No complex or special equipment is required, and it is compatible with existing glove production lines, achieving an organic unity of environmental protection and industrialized mass production. This solves the problems of complex processes, poor environmental performance, and difficulty in scaling up traditional composite gloves. Attached Figure Description

[0018] Figure 1 This is a physical example of the chemical-resistant and cut-resistant composite flocked gloves of the present invention. Figure 1 ; Figure 2This is a physical example of the chemical-resistant and cut-resistant composite flocked gloves of the present invention. Figure 2 . Detailed Implementation

[0019] The following examples are used to further illustrate the content of the present invention and do not limit the application of the present invention (all numbers below are parts by weight). Example 1:

[0020] This embodiment provides a chemical-resistant and cut-resistant composite flocked glove, the preparation process of which is as follows: Prepare the chemical protective layer adhesive, the cut-resistant layer adhesive, the elastic layer adhesive, and the water-based flocking latex, as detailed below: Preparation of chemical protective layer compound: Mix 100 parts of water-based butyl latex, 6 parts of channel black, 4 parts of 2402 tert-butylphenol aldehyde vulcanizing resin and 2 parts of stannous chloride evenly to obtain the chemical protective layer compound. Preparation of the anti-cut layer: Para-aramid fiber (DuPont Kevlar fiber) is woven into a ten-needle knitted structure by a textile machine to form a glove liner (i.e., anti-cut layer) with an areal density of 80g / m² and a thickness of 0.3mm. Preparation of elastic layer compound: Mix 100 parts of chloroprene latex, 3 parts of 2402 tert-butylphenolic vulcanizing resin, 2 parts of nano silica and 2 parts of antioxidant 1010 evenly to obtain elastic layer compound. Preparation of water-based flocking latex: Mix 15 parts butyl acrylate, 8 parts methyl methacrylate, 3 parts crosslinking monomer (acrylamide can be used as the crosslinking monomer here) and 35 parts deionized water evenly to obtain a water-based flocking latex with a solid content of 15 wt% and a viscosity of 150 mPa·s. At the same time, combed cotton linters with a length of 0.2mm were selected as cellulose linters for flocking; Chemlok 402 heat vulcanizing adhesive was selected as the adhesive.

[0021] The specific preparation of chemical-resistant and cut-resistant composite flocked gloves is as follows: First, heat the ceramic hand mold to 50℃, apply a release agent, and then dry it at 80℃ for 10 minutes to remove surface moisture. Next, immerse the pre-treated ceramic hand mold in the chemical-resistant adhesive for 50 minutes, followed by drying at 75℃ for 1 hour to form a 0.25mm thick chemical-resistant layer. Then, evenly coat the surface of the chemical-resistant layer with Chemlok 402 hot-curing adhesive at a rate of 10g / m². Attach the pre-woven cut-resistant layer to the adhesive surface, apply a pressure of 0.25MPa, and dry at 70℃ for 40 minutes to achieve a strong bond between the chemical-resistant and cut-resistant layers. Finally, evenly coat the surface of the cut-resistant layer with Chemlok... Using 402 hot-curing adhesive with a coating amount of 9 g / m², a ceramic hand mold with a chemical-resistant and cut-resistant layer is immersed in the elastic layer adhesive for 35 minutes, followed by drying at 70°C for 45 minutes to form an elastic layer with a thickness of 0.2 mm. The hand mold is then immersed in water-based flocking latex, with the flocking layer thickness controlled at 0.12 mm. After removal, the adhesive layer is kept semi-dry, and the surface temperature is controlled at 65°C. Next, under an 8-12 kV high-voltage electric field, combed cotton short fibers are vertically implanted into the semi-dry flocking adhesive layer at a flocking density of 1300 fibers / cm². This is followed by drying at 65°C for 50 minutes to obtain a preliminary glove. Finally, the preliminary glove is first vulcanized at 50°C for 60 minutes, then vulcanized at 145°C for 50 minutes. After cooling, it is demolded to obtain the finished chemical-resistant and cut-resistant composite flocked glove (the actual product is shown in the image). Figure 1 and Figure 2 (As shown). Example 2:

[0022] This embodiment provides a chemical-resistant and cut-resistant composite flocked glove, the preparation process of which is as follows: Prepare the chemical protective layer adhesive, the cut-resistant layer adhesive, the elastic layer adhesive, and the water-based flocking latex, as detailed below: Preparation of chemical protective layer compound: Mix 100 parts of water-based butyl latex, 8 parts of channel black, 5 parts of 2402 tert-butylphenol aldehyde vulcanizing resin and 3 parts of stannous chloride evenly to obtain the chemical protective layer compound. Preparation of the anti-cut layer: Para-aramid fiber (DuPont Kevlar fiber) is woven into a ten-needle knitted structure by a textile machine to form a glove liner (i.e., anti-cut layer) with an areal density of 90g / m² and a thickness of 0.4mm. Preparation of elastic layer compound: Mix 100 parts of chloroprene latex, 4 parts of 2402 tert-butylphenolic vulcanizing resin, 3 parts of nano silica and 3 parts of antioxidant 1010 evenly to obtain elastic layer compound. Preparation of water-based flocking latex: Mix 18 parts butyl acrylate, 12 parts methyl methacrylate, 4 parts crosslinking monomer (acrylamide can be used as the crosslinking monomer here) and 45 parts deionized water evenly to obtain a water-based flocking latex with a solid content of 18 wt% and a viscosity of 170 mPa·s. At the same time, 0.25mm modal short fibers were selected as the cellulose short fibers for flocking; Chemlok 402 heat vulcanizing adhesive was selected as the adhesive.

[0023] The specific preparation of chemical-resistant and cut-resistant composite flocked gloves is as follows: First, heat the ceramic hand mold to 55℃, apply a release agent, and then dry it at 80℃ for 10 minutes to remove surface moisture. Next, immerse the pre-treated ceramic hand mold in the chemical-resistant adhesive for 55 minutes, followed by drying at 85℃ for 1.5 hours to form a 0.25mm thick chemical-resistant layer. Then, evenly coat the surface of the chemical-resistant layer with Chemlok 402 hot-curing adhesive at a rate of 12g / m². Attach the pre-woven cut-resistant layer to the adhesive surface, apply a pressure of 0.3MPa, and dry at 75℃ for 45 minutes to achieve a strong bond between the chemical-resistant and cut-resistant layers. Finally, evenly coat the surface of the cut-resistant layer with Chemlok... Using 402 hot-curing adhesive with a coating amount of 11 g / m², a ceramic hand mold with a chemical-resistant and cut-resistant layer is immersed in the elastic layer adhesive for 40 minutes, followed by drying at 80°C for 60 minutes to form an elastic layer with a thickness of 0.2 mm. The hand mold is then immersed in water-based flocking latex, with the flocking layer thickness controlled at 0.18 mm. After removal, the adhesive layer is kept semi-dry, and the surface temperature is controlled at 70°C. Next, under an 8–12 kV high-voltage electric field, combed cotton short fibers are vertically implanted into the semi-dry flocking adhesive layer at a flocking density of 1400 fibers / cm². This is followed by drying at 70°C for 60 minutes to obtain a preliminary glove. Finally, the preliminary glove is first vulcanized at 55°C for 55 minutes, then vulcanized at 148°C for 48 minutes. After cooling, it is demolded to obtain the finished chemical-resistant and cut-resistant composite flocked glove. Example 3:

[0024] This embodiment provides a chemical-resistant and cut-resistant composite flocked glove, the preparation process of which is as follows: Prepare the chemical protective layer adhesive, the cut-resistant layer adhesive, the elastic layer adhesive, and the water-based flocking latex, as detailed below: Preparation of chemical protective layer compound: Mix 100 parts of water-based butyl latex, 5 parts of channel black, 3 parts of 2402 tert-butylphenol aldehyde vulcanizing resin and 1 part of stannous chloride evenly to obtain the chemical protective layer compound. Preparation of the anti-cut layer: Para-aramid fiber (DuPont Kevlar fiber) is woven into a ten-needle knitted structure by a textile machine to form a glove liner (i.e., anti-cut layer) with an areal density of 70g / m² and a thickness of 0.25mm. Preparation of elastic layer compound: Mix 100 parts of chloroprene latex, 2 parts of 2402 tert-butylphenolic vulcanizing resin, 1 part of nano silica and 2 parts of antioxidant 1010 evenly to obtain elastic layer compound. Preparation of water-based flocking latex: Mix 10 parts butyl acrylate, 5 parts methyl methacrylate, 2 parts crosslinking monomer (acrylamide can be used as the crosslinking monomer here) and 30 parts deionized water evenly to obtain a water-based flocking latex with a solid content of 12wt% and a viscosity of 130mPa・s. At the same time, combed cotton linters with a length of 0.15mm were selected as cellulose linters for flocking; Chemlok 402 heat vulcanizing adhesive was selected as the adhesive.

[0025] The specific preparation of chemical-resistant and cut-resistant composite flocked gloves is as follows: First, heat the ceramic hand mold to 45℃, apply a release agent, and then dry it at 80℃ for 10 minutes to remove surface moisture. Next, immerse the pre-treated ceramic hand mold in the chemical-resistant adhesive for 45 minutes, followed by drying at 70℃ for 1 hour to form a 0.25mm thick chemical-resistant layer. Then, evenly coat the surface of the chemical-resistant layer with Chemlok 402 hot-curing adhesive at a rate of 8g / m². Attach the pre-woven cut-resistant layer to the adhesive surface, apply a pressure of 0.2MPa, and dry at 65℃ for 30 minutes to achieve a strong bond between the chemical-resistant and cut-resistant layers. Finally, evenly coat the surface of the cut-resistant layer with Chemlok... Using 402 hot-curing adhesive with a coating amount of 8 g / m², a ceramic hand mold with a chemical-resistant and cut-resistant layer is immersed in the elastic layer adhesive for 30 minutes, followed by drying at 65°C for 30 minutes to form an elastic layer with a thickness of 0.2 mm. The hand mold is then immersed in water-based flocking latex, with the flocking layer thickness controlled at 0.1 mm. After removal, the adhesive layer is kept semi-dry, and the surface temperature is controlled at 60°C. Next, under an 8–12 kV high-voltage electric field, combed cotton short fibers are vertically implanted into the semi-dry flocking adhesive layer at a flocking density of 1200 fibers / cm². This is followed by drying at 60°C for 45 minutes to obtain a preliminary glove. Finally, the preliminary glove is first vulcanized at 48°C for 65 minutes, then vulcanized at 142°C for 52 minutes. After cooling, it is demolded to obtain the finished chemical-resistant and cut-resistant composite flocked glove.

[0026] Comparative Example 1: The composite flocked gloves provided in this comparative example, compared with those in Example 1, do not use adhesive modification or special adhesives. Their preparation process is as follows: Prepare the chemical protective layer adhesive, the cut-resistant layer adhesive, the elastic layer adhesive, and the water-based flocking latex, as detailed below: The chemical protective layer rubber compound uses only water-based butyl latex and does not contain channel black, 2402 tert-butylphenolic vulcanizing resin or stannous chloride. The anti-cut layer is the same as in Example 1, and is a glove liner made of para-aramid fiber ten-needle knit (area density 80g / m², thickness 0.3mm). The elastic layer material uses only chloroprene latex, without the addition of tackifiers, nano silica, and antioxidants; The water-based flocking latex and cellulose short fibers are the same as in Example 1; For the adhesive, a common general-purpose adhesive is selected.

[0027] When preparing composite flocked gloves, except that the adhesive was not modified (no corresponding modified components were added to the chemical protective layer and the elastic layer), and a general-purpose adhesive was used instead of Chemlok 402 heat-curing adhesive, all other steps were the same as in Example 1.

[0028] Comparative Example 2: Compared with Example 1, the composite flocked gloves provided in this comparative example use a traditional flocking process, with the flocked layer directly attached to the cut-resistant layer. The preparation process is as follows: The preparation of the chemical protective layer, the cut-resistant layer, and the water-based flocked latex is the same as in Example 1, but the flocked layer is directly attached to the cut-resistant layer without an elastic layer. When preparing composite flocked gloves, the steps of hand mold pretreatment, chemical protective layer forming, anti-cutting layer lamination, electrostatic flocking and vulcanization are the same as in Example 1. The only difference is that when applying the flocking adhesive, water-based flocking latex is directly applied to the surface of the anti-cutting layer, the adhesive layer thickness is controlled at 0.12 mm, it is kept in a semi-dry state, and the surface temperature is 65°C.

[0029] Comparative Example 3: The composite flocked gloves provided in this comparative example do not employ a segmented vulcanization process compared to Example 1. Their preparation process is as follows: The preparation of the chemical-resistant layer adhesive, the cut-resistant layer adhesive, the elastic layer adhesive, and the water-based flocking latex is the same as in Example 1; When preparing composite flocked gloves, except that the vulcanization process was changed to direct high-temperature vulcanization at 145°C for 90 minutes instead of low-temperature vulcanization, all other steps were the same as in Example 1.

[0030] The following table shows the performance tests conducted on the chemical-resistant and cut-resistant composite flocked gloves prepared in Examples 1-3 and the composite flocked gloves prepared in Comparative Examples 1-3: ; As shown in the table above, this invention, through a four-layer composite structure design, material modification and optimization, segmented vulcanization process, and precise control of process parameters, successfully prepared a composite flocked glove that combines high-efficiency chemical protection, cut resistance, strong interlayer bonding, comfortable wear, and environmental friendliness. The comparative examples further confirm that the lack of tackifiers, improper use of adhesives, the absence of an elastic layer, or the absence of a segmented vulcanization process will significantly affect the overall performance of the glove, highlighting the necessity and synergistic effect of the various technical features of this invention. Therefore, this invention is more suitable for high-risk working environments such as chemical processing, machining, and laboratory operations, and has good prospects for industrialization.

Claims

1. A chemical-resistant and cut-resistant composite flocked glove, characterized in that, The material comprises, from the inside out, a flocked layer, an elastic layer, a cut-resistant layer, and a chemical-resistant layer. The chemical-resistant layer consists of water-based butyl latex, channel black, 2402 tert-butylphenol aldehyde vulcanizate, and stannous chloride. The cut-resistant layer is woven from para-aramid fibers using a ten-needle knitting structure. The elastic layer consists of chloroprene latex, a tackifier, nano-silica, and an antioxidant. The flocked layer is formed by vertically implanting and fixing short cellulose fibers onto the inner surface of the elastic layer using water-based flocking latex.

2. The chemical-resistant and cut-resistant composite flocked glove according to claim 1, characterized in that, The chemical protective layer comprises, based on 100 parts by weight of the water-based butyl latex, 5-8 parts of channel black, 3-5 parts of 2402 tert-butylphenol aldehyde vulcanizing resin, and 1-3 parts of stannous chloride.

3. The chemical-resistant and cut-resistant composite flocked glove according to claim 1, characterized in that, The areal density and thickness of the cut-resistant layer are 70-90 g / m². 2 And 0.25~0.4mm.

4. The chemical-resistant and cut-resistant composite flocked glove according to claim 1, characterized in that, The amount of the elastic layer compound is calculated based on 100 parts by weight of the chloroprene latex, the amount of the tackifier is 2 to 4 parts, the amount of the nano silica is 1 to 3 parts, and the amount of the antioxidant is 2 to 3 parts.

5. The chemical-resistant and cut-resistant composite flocked glove according to claim 4, characterized in that, The tackifier is 2402 tert-butylphenol aldehyde vulcanized resin, and the antioxidant is antioxidant 1010.

6. A method for preparing a chemical-resistant and cut-resistant composite flocked glove according to any one of claims 1-5, characterized in that, The specific steps are as follows: S1. Pre-treatment of ceramic hand mold: Heat the ceramic hand mold to 45-55℃, apply release agent and then dry the surface moisture; S2. Chemical protective layer forming: Immerse the pretreated ceramic hand mold in the chemical protective layer adhesive for 40-60 minutes, and dry it at 70-85℃ for 1-1.5 hours to form the chemical protective layer; S3, Cut-resistant layer lamination: Apply Chemlok 402 adhesive evenly to the surface of the chemical protective layer, then attach the pre-woven cut-resistant layer on top, apply pressure at 0.2-0.3 MPa, and dry at 65-75°C for 30-45 minutes; S4. Elastic layer molding: Apply Chemlok 402 adhesive evenly to the surface of the anti-cutting layer, immerse the ceramic hand mold with the chemical-resistant layer and anti-cutting layer attached into the elastic layer adhesive for 30-45 minutes, and dry it at 65-80℃ for 30-60 minutes to form the elastic layer. S5. Flocking adhesive coating: Immerse the ceramic hand mold with the chemical-resistant layer, cut-resistant layer and elastic layer in water-based flocking adhesive latex, and control the thickness and surface temperature of the flocking adhesive layer. After removal, keep it in a semi-dry state. S6. Electrostatic flocking: Under an 8-12kV high-voltage electric field, cellulose short fibers are vertically implanted into a semi-dry flocking adhesive layer, and dried at 60-70℃ for 45-60 minutes to obtain a preliminary glove product. S7. Vulcanization treatment: The initial glove sample is vulcanized at a low temperature of 45-55℃ for 50-70 minutes, and then vulcanized at a high temperature of 140-150℃ for 45-55 minutes. After cooling, it is demolded to obtain the finished chemical-resistant and cut-resistant composite flocked gloves.

7. The chemical-resistant and cut-resistant composite flocked glove according to claim 6, characterized in that, In S5, the water-based flocked latex comprises the following raw material components by weight: 10-18 parts butyl acrylate, 5-12 parts methyl methacrylate, 2-4 parts crosslinking monomer, and 30-45 parts deionized water.

8. The chemical-resistant and cut-resistant composite flocked glove according to claim 7, characterized in that, In S5, the solid content of the water-based flocked latex is 12-18 wt% and its viscosity is 130-180 mPa·s.

9. A chemical-resistant and cut-resistant composite flocked glove according to claim 6, characterized in that, In S5, the thickness and surface temperature of the flocking adhesive layer are 0.1–0.18 mm and 60–70 °C, respectively.

10. A chemical-resistant and cut-resistant composite flocked glove according to claim 6, characterized in that, In S6, the cellulose lint is one of combed cotton lint and modal lint, and the length of the cellulose lint is 0.15-0.25 mm.

Images