Preparation method of ultra-high molecular weight polyethylene anti-cutting gloves

Abstract

The invention relates to a preparation method of ultra-high molecular weight polyethylene anti-cutting gloves, which comprises the following steps: twisting polyethylene fibers at 8-12 pieces / cm, putting the twisted polyethylene fibers into a shuttle loom, weaving into a middle base cloth layer with the thickness of 2-4mm, simultaneously preparing a polyvinyl alcohol modifier, accurately weighing C3-C10 straight-chain polyols or C3-C10 straight-chain polyols and polyethylene glycol according to the proportion, heating to 60 DEG C, stirring for 20-30 minutes, and cooling to room temperature to obtain the ultra-high molecular weight polyethylene anti-cutting gloves. Adding a trace amount of organic acid as a catalyst, heating to 80 DEG C, preserving heat for about 2 hours, cooling, discharging for later use, and selecting polyethylene slices and white graphene polyethylene master batches in proportion as glove raw materials. Silk is a high-grade textile raw material and is soft in gloss, comfortable in hand feeling and good in strength and elasticity.

Description

Technical Field

[0001] This invention relates to the field of glove manufacturing technology, specifically to a method for preparing ultra-high molecular weight polyethylene cut-resistant gloves. Background Technology

[0002] Hands are among the most delicate and intricate organs in the human body, used to perform various tasks. Gloves serve as hand protection, for warmth and work safety, and sometimes for decorative purposes. They are essential for keeping warm in cold weather and are indispensable for medical and industrial protective equipment. Gloves are categorized by manufacturing method, including sewn, knitted, and dipped gloves. With increasing demands for various glove functionalities, related technologies in glove materials and manufacturing processes are constantly evolving. In particular, the material of the glove determines its protective performance and is the basis for glove selection. Flexible puncture-resistant fabrics are one type of material used in cut-resistant gloves. Compared to rigid or semi-rigid puncture-resistant fabrics, they are more comfortable, lightweight, and offer greater flexibility. The fibers used to produce flexible puncture-resistant fabrics must possess high strength, high modulus, shear resistance, and impact resistance. Commonly used flexible stab-resistant fabrics are made from fibers such as ultra-high molecular weight polyethylene (UHMWPE), aramid fiber, poly(p-phenylene benzobisoxazole) fiber, polybutylene terephthalate (PET), ceramic fiber, carbon fiber, polyester fiber, and artificial spider silk. While disposable gloves made from traditional materials have mature and sophisticated processes, they also have significant drawbacks. PE gloves are relatively thin and easily damaged; PVC gloves have a high plasticizing agent content and are prone to releasing harmful gases when heated; nitrile gloves have poor elasticity; and latex gloves are prone to causing allergies. Both PE and PVC gloves require molten molding, resulting in high energy consumption. The manufacturing processes for nitrile and latex gloves are complex and generate significant waste during production. The biggest drawback of gloves made from traditional materials is their environmental unfriendliness and difficulty in biodegradation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a method for preparing ultra-high molecular weight polyethylene cut-resistant gloves, thereby solving the technical problems mentioned in the background art. Technical solution

[0004] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing ultra-high molecular weight polyethylene cut-resistant gloves, comprising the following steps: Step 1: Twist polyethylene fibers by 8-12 twists / cm and place them in a loom to weave a 2-4mm thick intermediate base fabric layer. At the same time, prepare a polyvinyl alcohol modifier. According to the formula, accurately weigh C3-C10 linear polyol or C3-C10 linear polyol and polyethylene glycol, heat to 60℃, add a trace amount of organic acid as a catalyst, heat to 80℃, keep warm for about 2 hours, cool down, discharge the material, and set aside. Select polyethylene chips and white graphene polyethylene masterbatch according to the proportion as raw materials for gloves. Step 2: Place the obtained intermediate base fabric layer on an embroidery machine, combine 3-5 20 / 22D silk fibers as guide threads, and use a jumping, crossing, or a combination of both methods to densely distribute the silk fibers on the upper and lower surfaces of the intermediate base fabric layer to obtain a soft and stab-resistant fabric, thus preparing white graphene polyethylene fiber. Step 3: The gloves are woven from a blend of yarns. The yarns are selected from ultra-high molecular weight polyethylene / polyester staple fiber blended yarn, polyester-covered spandex yarn, PVC-covered glass fiber spandex filament yarn, and elastic yarn. The cuffs of the woven gloves are finished with knitted rib cuffs. The cuffs are then heat-sealed in one step using a hot melt machine at a temperature of 120℃-180℃. After surface chemical treatment with a waterproof finishing agent, the finished product is obtained. Step 4: Polyvinyl alcohol modification. Accurately weigh polyvinyl alcohol, mix at high speed, heat up, and control the temperature between 30-50℃. Add polyvinyl alcohol modifier over 0.5-1 hour. After addition, heat to above 60℃ and stir for 0.5 hours. Add crosslinking agent and release agent, control the temperature between 60-80℃, and stir for 0.5 hours. Discharge and age for 8-16 hours for later use. Step 5: After finishing the soft stab-resistant fabric obtained in the above steps, cut and sew it to obtain a soft stab-resistant glove that can be worn close to the body.

[0005] Preferably, in the glove raw materials, the amount of white graphene polyethylene masterbatch is 5-20% of the total amount of glove raw materials by mass percentage.

[0006] In a further preferred embodiment, the white graphene polyethylene masterbatch is obtained by uniformly mixing white graphene powder, anti-cutting powder, heat-resistant powder, and polyethylene powder, and then granulating them using a screw extruder.

[0007] In a further preferred step, the aged polyvinyl alcohol is dissolved in distilled water at a ratio of 5:1 to 10:1, heated to 75-90°C, and kept at that temperature for 3-4 hours. After observing that the sol is transparent and uniform, the temperature is lowered to below 50°C, a defoamer is added, and the material is poured into a material tank for later use.

[0008] In a further preferred embodiment, the number of meridians or parallels that are jumped is 1-5, and the number of meridians or parallels that are crossed is 4-8.

[0009] In a further preferred embodiment, the white graphene polyethylene masterbatch is composed of, by weight percentage, 1%-3% white graphene powder, 2-15% cut-resistant powder, 13-28% heat-resistant powder, and 65-80% polyethylene powder.

[0010] In a further preferred embodiment, the anti-cutting powder is any one or more of silicon powder, glass fiber powder, carbon fiber powder, carbon nanotubes, and basalt powder.

[0011] In a further preferred embodiment, the heat-resistant powder is any one or more of titanium dioxide, diatomaceous earth, magnesium oxide, ceramic powder, hollow glass microsphere powder, and aerogel powder. Beneficial effects

[0012] Compared with the prior art, the present invention provides a method for preparing ultra-high molecular weight polyethylene cut-resistant gloves, which has the following beneficial effects: In this invention, silk is a high-grade textile raw material, possessing not only a soft luster and comfortable feel, but also good strength and elasticity. Furthermore, it is cheaper than other high-strength fibers. Using silk fibers to prepare soft, puncture-resistant glove fabric improves the softness and feel of the fabric. Since all parts in contact with the skin are made of silk, prolonged close-fitting wear will not cause harm and may even offer certain health benefits. In addition, the basic raw material used in this invention, polyvinyl alcohol (PVA), is a petrochemical byproduct, inexpensive and readily available. PVA has high-temperature water solubility and short-term biodegradability, allowing for recycling and reuse. Compared to other glove materials, it does not cause white pollution and is more environmentally friendly. The polyvinyl alcohol modifier used in this invention... All defoamers are water-soluble polyhydroxy additives, which are non-toxic and environmentally friendly. Other inorganic additives are also non-toxic and harmless. In addition, this invention uses white graphene polyethylene masterbatch as raw material and adopts a two-step melting method to prepare white graphene polyethylene masterbatch and white graphene polyethylene fiber in sequence, so as to obtain polyethylene filament with high cut resistance, antibacterial and heat resistance. The gloves obtained by coating and processing the filament have excellent cut resistance, antibacterial and heat resistance, which can meet the needs of consumers in the field of safety protection. Attached Figure Description

[0013] Figure 1 This is a schematic flowchart of the preparation method of the ultra-high molecular weight polyethylene cut-resistant gloves of the present invention. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0015] Please see Figure 1 The preparation method of ultra-high molecular weight polyethylene cut-resistant gloves includes the following steps: Step 1: Twist polyethylene fibers by 8 strands / cm and weave them into a 2mm thick intermediate base fabric layer in a loom. At the same time, prepare a polyvinyl alcohol modifier. According to the formula, accurately weigh C3 linear polyol or C3 linear polyol and polyethylene glycol, heat to 60℃, add a trace amount of organic acid as a catalyst, heat to 80℃, keep warm for about 2 hours, cool down, discharge the material, and set aside. Select polyethylene chips and white graphene polyethylene masterbatch according to the proportion as raw materials for gloves. Step 2: Place the obtained intermediate base fabric layer on an embroidery machine, combine three 20 / 22D silk fibers as guide threads, and use a jumping, crossing, or a combination of both methods to densely distribute the silk fibers on the upper and lower surfaces of the intermediate base fabric layer to obtain a soft, stab-resistant fabric and prepare white graphene polyethylene fiber. Step 3: The gloves are woven from a blend of yarns. The yarns are selected from ultra-high molecular weight polyethylene / polyester staple fiber blended yarn, polyester-covered spandex yarn, PVC-covered glass fiber spandex filament yarn, and elastic yarn. The cuffs of the woven gloves are finished with knitted rib cuffs. The cuffs are then heat-sealed in one step using a hot melt machine at a temperature of 120℃. After surface chemical treatment with a waterproof finishing agent, the finished product is obtained. Step 4: Polyvinyl alcohol modification. Weigh the polyvinyl alcohol correctly, mix at high speed, heat up, and control the temperature between 30°C and 60°C. Add the polyvinyl alcohol modifier over 0.5 hours. After the addition is complete, heat up to above 60°C and stir for 0.5 hours. Add the crosslinking agent and release agent, control the temperature below 60°C, and stir for 0.5 hours. Discharge the material, age for 8 hours, and set aside. Step 5: After finishing the soft stab-resistant fabric obtained in the above steps, cut and sew it to obtain a soft stab-resistant glove that can be worn close to the body.

[0016] In a further embodiment of the present invention, the amount of white graphene polyethylene masterbatch used in the glove raw materials is 5% of the total amount of glove raw materials by mass percentage.

[0017] In a further embodiment of the present invention, the white graphene polyethylene masterbatch is obtained by uniformly mixing white graphene powder, anti-cutting powder, heat-resistant powder, and polyethylene powder, and then granulating them through a screw extruder.

[0018] In a further embodiment of the present invention, aged polyvinyl alcohol is dissolved in distilled water at a ratio of 5:1 to 10:1, heated to 75°C and kept at that temperature for 3 hours. After observing that the sol is transparent and uniform, the temperature is lowered to below 50°C, defoamer is added, and the material is poured into a material tank for later use. Example

[0019] The preparation method of ultra-high molecular weight polyethylene cut-resistant gloves includes the following steps: Step 1: Twist polyethylene fibers to 12 strands / cm and weave them into a 4mm thick intermediate base fabric layer in a loom. At the same time, prepare a polyvinyl alcohol modifier. According to the ratio, accurately weigh C10 linear polyol or C10 linear polyol and polyethylene glycol, heat to 60℃, add a trace amount of organic acid as a catalyst, heat to 80℃, keep warm for about 2 hours, cool down, discharge the material, and set aside. Select polyethylene chips and white graphene polyethylene masterbatch according to the ratio as raw materials for gloves. Step 2: Place the obtained intermediate base fabric layer on an embroidery machine, combine 3-5 20 / 22D silk fibers as guide threads, and use a jumping, crossing, or a combination of both methods to densely distribute the silk fibers on the upper and lower surfaces of the intermediate base fabric layer to obtain a soft and stab-resistant fabric, thus preparing white graphene polyethylene fiber. Step 3: The gloves are woven from a blend of yarns. The yarns are selected from ultra-high molecular weight polyethylene / polyester staple fiber blended yarn, polyester-covered spandex yarn, PVC-covered glass fiber spandex filament yarn, and elastic yarn. The cuffs of the woven gloves are finished with knitted rib cuffs. The cuffs are then heat-sealed in one step using a hot melt machine at a temperature of 180℃. After surface chemical treatment with a waterproof finishing agent, the finished product is obtained. Step 4: Polyvinyl alcohol modification. Weigh the polyvinyl alcohol correctly, mix at high speed, heat up and control the temperature between 50°C, add the polyvinyl alcohol modifier, add over 1 hour, after addition, heat to above 60°C, stir for 0.5 hours, add the crosslinking agent and release agent, control the temperature between 60-80°C, stir for 0.5 hours, discharge, age for 16 hours, and set aside. Step 5: After finishing the soft stab-resistant fabric obtained in the above steps, cut and sew it to obtain a soft stab-resistant glove that can be worn close to the body.

[0020] In a further embodiment of the present invention, the number of skipped meridians or parallels is 1-5, and the number of crossed meridians or parallels is 4-8; the white graphene polyethylene masterbatch uses raw materials that, by weight percentage, consist of 1%-3% white graphene powder, 2-15% cut-resistant powder, 13-28% heat-resistant powder, and 65-80% polyethylene powder; the cut-resistant powder is any one or more of silicon powder, glass fiber powder, carbon fiber powder, carbon nanotubes, and basalt powder; the heat-resistant powder is any one or more of titanium dioxide, diatomaceous earth, magnesium oxide, ceramic powder, hollow glass microsphere powder, and aerogel powder.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing ultra-high molecular weight polyethylene cut-resistant gloves, characterized in that, Includes the following steps: Step 1: Twist polyethylene fibers by 8-12 twists / cm and place them in a loom to weave a 2-4mm thick intermediate base fabric layer. At the same time, prepare a polyvinyl alcohol modifier. According to the formula, accurately weigh C3-C10 linear polyol or C3-C10 linear polyol and polyethylene glycol, heat to 60℃, add a trace amount of organic acid as a catalyst, heat to 80℃, keep warm for about 2 hours, cool down, discharge the material, and set aside. Select polyethylene chips and white graphene polyethylene masterbatch according to the proportion as raw materials for gloves. Step 2: Place the obtained intermediate base fabric layer on an embroidery machine, combine 3-5 20 / 22D silk fibers as guide threads, and use a jumping, crossing, or a combination of both methods to densely distribute the silk fibers on the upper and lower surfaces of the intermediate base fabric layer to obtain a soft and stab-resistant fabric, thus preparing white graphene polyethylene fiber. Step 3: The gloves are woven from a blend of yarns. The yarns are selected from ultra-high molecular weight polyethylene / polyester staple fiber blended yarn, polyester-covered spandex yarn, PVC-covered glass fiber spandex filament yarn, and elastic yarn. The cuffs of the woven gloves are finished with knitted rib cuffs. The cuffs are then heat-sealed in one step using a hot melt machine at a temperature of 120℃-180℃. After surface chemical treatment with a waterproof finishing agent, the finished product is obtained. Step 4: Polyvinyl alcohol modification. Accurately weigh polyvinyl alcohol, mix at high speed, heat up, and control the temperature between 30-50℃. Add polyvinyl alcohol modifier over 0.5-1 hour. After addition, heat to above 60℃ and stir for 0.5 hours. Add crosslinking agent and release agent, control the temperature between 60-80℃, and stir for 0.5 hours. Discharge and age for 8-16 hours for later use. Step 5: After finishing the soft stab-resistant fabric obtained in the above steps, cut and sew it to obtain a soft stab-resistant glove that can be worn close to the body.

2. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 1, characterized in that: In the aforementioned glove raw materials, the amount of white graphene polyethylene masterbatch, by mass percentage, is 5-20% of the total amount of glove raw materials.

3. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 2, characterized in that: The white graphene polyethylene masterbatch is obtained by uniformly mixing white graphene powder, anti-cutting powder, heat-resistant powder, and polyethylene powder, and then granulating them through a screw extruder.

4. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 3, characterized in that: Dissolve the aged polyvinyl alcohol in distilled water at a ratio of 5:1 to 10:1, heat to 75-90℃ and keep warm for 3-4 hours. After observing that the sol is transparent and uniform, cool down to below 50℃, add defoamer, and put the material into the material tank for later use.

5. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 1, characterized in that: The number of meridians or parallels that are jumped is 1-5, and the number of meridians or parallels that are crossed is 4-8.

6. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 1, characterized in that: The white graphene polyethylene masterbatch is composed of, by weight percentage, 1%-3% white graphene powder, 2-15% cut-resistant powder, 13-28% heat-resistant powder, and 65-80% polyethylene powder.

7. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 6, characterized in that: The anti-cutting powder is any one or more of silicon powder, glass fiber powder, carbon fiber powder, carbon nanotubes, and basalt powder.

8. The method for preparing ultra-high molecular weight polyethylene cut-resistant gloves according to claim 6, characterized in that: The heat-resistant powder is any one or more of titanium dioxide, diatomaceous earth, magnesium oxide, ceramic powder, hollow glass microsphere powder, and aerogel powder.

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