Anti-cutting medical latex gloves and manufacturing method thereof

Abstract

The invention belongs to the field of medical instruments, and particularly relates to an anti-cutting medical latex glove and a manufacturing method thereof. The method comprises the following steps: S1, carrying out surface impurity removal and surface etching on basalt fibers, and then modifying the basalt fibers by using a silane coupling agent; s2, preparing a mixed solution of basalt fibers and natural latex; s3, forming a layer of dried coagulator on the surface of the glove mold; s4, the glove mold obtained in the step S3 is soaked in the mixed solution obtained in the step S2, and preheating treatment is conducted; s5, vulcanizing; s6, demolding is conducted, and the anti-cutting medical latex gloves are obtained. According to the medical latex glove, the basalt short fiber reinforced latex composite material is adopted as basic liquid of the glove, and the basalt short fiber reinforced latex composite material can obtain excellent orientation and shear modulus, so that the anti-cutting performance and the wear-resisting performance of the medical latex glove are improved.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a cut-resistant medical latex glove and its manufacturing method. Background Technology

[0002] Natural latex possesses excellent processing and mechanical properties, exhibiting good film-forming properties and ease of vulcanization. The resulting products possess soft elasticity, good flexibility, and excellent tensile and fracture toughness. Due to its combination of high strength and high elasticity, it is widely used in protective equipment and currently still dominates the market for surgical gloves.

[0003] Medical latex gloves are indispensable tools in medical examinations and surgeries, providing a protective barrier to effectively prevent infection between medical staff and patients. However, due to the material properties of latex gloves, they lack cut-resistant properties after production, while clinical surgical environments often present a high risk of cuts, thus endangering the safety of medical personnel. Therefore, this paper proposes a cut-resistant medical latex glove and its preparation method. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a cut-resistant medical latex glove and its manufacturing method. This invention uses a basalt short-fiber reinforced latex composite material as the base liquid for the glove. The basalt short-fiber reinforced latex material exhibits excellent orientation and shear modulus, thereby improving the cut resistance and abrasion resistance of the medical latex glove.

[0005] The technical solution provided by this invention is as follows: A method for manufacturing a cut-resistant medical latex glove includes the following steps: S1: The basalt fiber is subjected to surface impurity removal and surface etching, and then modified with a silane coupling agent; S2: Prepare a mixture of basalt fiber and natural latex; S3: Forms a dried coagulant layer on the surface of the glove mold; S4: Immerse the glove mold obtained in step S3 in the mixture obtained in step S2 and preheat it; S5: Vulcanization; S6: Demold to obtain cut-resistant medical latex gloves.

[0006] Specifically, in step S1: The length of basalt fibers is 6~9mm; Basalt fibers are placed in an acetone solution and ultrasonically cleaned for 2-4 hours to remove impurities from their surface. Acetone is used as an etching solution to complete the etching process simultaneously. After etching, the basalt fiber is surface treated with silane coupling agent in a water bath and under magnetic stirring for 5-8 hours. After stirring, it is cleaned with ethanol and then dried in an oven to obtain the modified basalt fiber.

[0007] Basalt fiber is a novel high-performance fiber produced from continuous or discontinuous volcanic basalt rocks through a thermochemical process. It possesses high strength, high modulus, high temperature resistance, acid and alkali resistance, and good durability, making it a promising candidate for reinforcing polymer composites. However, due to its smooth, chemically inert surface, small specific surface area, low surface energy, and hydrophilic and oleophobic properties, basalt fiber is difficult to bond well with rubber matrices. Therefore, surface treatment is necessary before use.

[0008] In the above technical solution: The etching with acetone increases the roughness of the basalt fiber surface, which helps to increase the bonding force with other materials; By modifying the surface of basalt fibers with silane coupling agents, the basalt fibers can be bonded to latex. The preferred silane coupling agent is 2-4% KH-550, and the solution can be ethanol and water (mass ratio 1:0.8-1.2).

[0009] Specifically, in step S2: 60-65 parts of natural rubber latex, 0.7-0.9 parts of silica, and 6-8 parts of modified basalt fiber are mixed and stirred evenly. Then, 0.3-0.5 parts of vulcanizing agent, 0.3-0.5 parts of vulcanization accelerator, 0.2-0.4 parts of antioxidant, and 0.4-0.6 parts of zinc oxide are added to adjust the solid content to 35%-40%, thereby obtaining a mixture of basalt fiber and natural latex.

[0010] Specifically, in step S3: after preheating the glove mold to 100~130℃, immerse it in a calcium chloride coagulation solution with a mass fraction of 7~9wt% for 10~40 seconds, then remove and dry it, so that a layer of dried coagulating agent is attached to the glove mold.

[0011] Specifically, in step S4: Soaking time is 40-60 seconds; The preheating temperature is 90~120℃, and the preheating time is 1~2 minutes.

[0012] Specifically, in step S5: the glued glove mold is placed in a vulcanizing furnace for vulcanization treatment. The vulcanization conditions are set to a temperature of 120~160℃, a pressure of 12~20MPa, and a time of 20~40min.

[0013] The manufacturing method of cut-resistant medical latex gloves may specifically include the following steps: S1: Basalt fiber pretreatment Basalt fibers were placed in an acetone solution and ultrasonically cleaned for 2-4 hours to remove impurities and etch them to increase the contact points with the natural rubber surface. Then, a surface treatment agent was used to treat the surface for 5-8 hours under water bath and magnetic stirring. After stirring, the fibers were cleaned with ethanol and then dried in an oven to obtain the modified basalt fibers. S2: Preparation of a mixture of basalt fiber and natural latex Natural rubber latex, silica, and modified basalt fiber are mixed and stirred evenly. Then, vulcanizing agent, accelerator, antioxidant, and zinc oxide are added, and the solid content is adjusted to 35%~40% to obtain mixed rubber latex. S3: Hand mask pretreatment After the glove mold is preheated, it is immersed in the coagulation liquid to ensure full contact with the surface of the glove film. After immersion for 10-40 seconds, it is removed and dried, so that a layer of dried coagulating agent adheres to the glove film. S4: Apply adhesive to hand mask The glove mold coated with coagulant is immersed in the basalt fiber / natural latex mixture impregnation bath prepared in step S2 for 40-60 seconds, then removed and preheated at 90-120℃ for 1-2 minutes. S5: Vulcanization The coated mold is placed in a vulcanizing furnace for vulcanization. Vulcanization is the process of reacting the natural rubber in the latex with the added vulcanizing agent, causing the latex to form a solid glove while ensuring the glove's strength and elasticity. The vulcanization conditions are set as follows: temperature 120~160℃, pressure 12~20MPa, and time 20~40min. S6: Demolding.

[0014] After cooling, the edges are rolled up and the material is demolded to obtain rubber gloves.

[0015] The present invention also provides a cut-resistant medical latex glove, which is made by the method described above.

[0016] Specifically, cut-resistant medical latex gloves have a tensile strength greater than 12N and an elongation greater than 850%.

[0017] Specifically, the thickness of cut-resistant medical latex gloves is 0.1~0.25mm.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) By introducing basalt fiber as a reinforcing material, the cut resistance and abrasion resistance of medical latex gloves are significantly improved. The high strength and high modulus of basalt fiber enable the gloves to provide better protection when facing cut risks, effectively reducing the risk of injury to medical personnel in clinical surgical environments, and has broad application prospects in the field of medical consumables; 2) The preparation method used in this invention improves the interfacial bonding between basalt fibers and natural rubber through pretreatment, thereby enhancing the overall performance of the composite material. This treatment method not only strengthens the adhesion between the fibers and rubber but also makes the gloves more durable and have a longer service life while maintaining their softness and elasticity. Detailed Implementation

[0019] The principles and features of the present invention are described below. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0020] Unless otherwise specified, the test methods used in the embodiments are conventional methods; unless otherwise specified, the materials and reagents used are commercially available.

[0021] The basalt fiber is sourced from Hubei Huierjie Basalt Fiber Co., Ltd., and its length is 6~9mm.

[0022] Example 1 A method for preparing a cut-resistant medical latex glove includes the following steps: S1: Basalt fiber pretreatment S11. Place the basalt fiber in an acetone solution and clean it with an ultrasonic cleaner at a frequency of 20KHz for 3 hours to remove impurities from its surface and etch it to increase the contact points between it and the surface of natural rubber. S12. A mixed solution of ethanol and water (mass ratio 1:1) containing 3% KH-550 silane coupling agent was used for surface treatment for 7 hours under water bath and magnetic stirring. S13. After stirring, wash with ethanol three times to remove unreacted silane coupling agent, and then dry in an oven at 65°C to obtain basalt fiber modified with silane coupling agent KH-550.

[0023] S2: Preparation of basalt fiber / natural latex mixture 63 parts of natural rubber latex, 0.8 parts of silica, and 7 parts of modified basalt fiber were mixed and stirred evenly. Then, 0.4 parts of sulfur, 0.4 parts of sodium dibutyldithiocarbamate accelerator, 0.3 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine antioxidant, and 0.5 parts of zinc oxide were added, and the solid content was adjusted to 37% to obtain basalt fiber / natural latex mixed rubber latex.

[0024] S3: Hand mask pretreatment After the glove mold is preheated, it is immersed in a calcium chloride coagulation solution with a mass fraction of 8wt% to ensure full contact with the surface of the glove mold. After immersion for 30 seconds, it is removed and dried, so that a layer of dried coagulating agent adheres to the glove mold. S4: Applying adhesive to the hand mask The glove mold coated with coagulant was immersed in the basalt fiber / natural latex mixture impregnation bath prepared in step S2 for 40 seconds, and then removed and preheated at 100°C for 1 minute. S5: Vulcanization The coated mold is placed in a vulcanizing furnace for vulcanization. The vulcanization conditions are set as follows: temperature 140℃, pressure 18MPa, and time 30min. S6: Demolding.

[0025] After cooling, the edges are rolled up and the material is demolded to obtain rubber gloves.

[0026] Example 2 A method for preparing a cut-resistant medical latex glove includes the following steps: S1: Basalt fiber pretreatment S11. Place the basalt fiber in an acetone solution and clean it with an ultrasonic cleaner at a frequency of 20KHz for 3 hours to remove impurities from its surface and etch it to increase the contact points between it and the surface of natural rubber. S12. A mixed solution of ethanol and water (mass ratio 1:1) containing 3% KH-550 silane coupling agent was used for surface treatment for 7 hours under water bath and magnetic stirring. S13. After stirring, wash with ethanol three times to remove unreacted silane coupling agent, and then dry in an oven at 65°C to obtain basalt fiber modified with silane coupling agent KH-550.

[0027] S2: Preparation of basalt fiber / natural latex mixture 63 parts of natural rubber latex, 0.8 parts of silica, and 7 parts of modified basalt fiber were mixed and stirred evenly. Then, 0.4 parts of sulfur, 0.4 parts of sodium dibutyldithiocarbamate accelerator, 0.3 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine antioxidant, and 0.5 parts of zinc oxide were added, and the solid content was adjusted to 37% to obtain basalt fiber / natural latex mixed rubber latex.

[0028] S3: Hand mask pretreatment After the glove mold is preheated, it is immersed in a calcium chloride coagulation solution with a mass fraction of 8wt% to ensure full contact with the surface of the glove mold. After immersion for 30 seconds, it is removed and dried, so that a layer of dried coagulating agent adheres to the glove mold. S4: Applying adhesive to the hand mask The glove mold coated with coagulant was immersed in the basalt fiber / natural latex mixture impregnation bath prepared in step S2 for 40 seconds, and then removed and preheated at 100°C for 1 minute. S5: Vulcanization The coated mold is placed in a vulcanizing furnace for vulcanization. The vulcanization conditions are set as follows: temperature 120℃, pressure 18MPa, and time 20min. S6: Demolding.

[0029] After cooling, the edges are rolled up and the material is demolded to obtain rubber gloves.

[0030] Example 3 A method for preparing a cut-resistant medical latex glove includes the following steps: S1: Basalt fiber pretreatment S11. Place the basalt fiber in an acetone solution and clean it with an ultrasonic cleaner at a frequency of 20KHz for 3 hours to remove impurities from its surface and etch it to increase the contact points between it and the surface of natural rubber. S12. A mixed solution of ethanol and water (mass ratio 1:1) containing 3% KH-550 silane coupling agent was used for surface treatment for 7 hours under water bath and magnetic stirring. S13. After stirring, wash with ethanol three times to remove unreacted silane coupling agent, and then dry in an oven at 65°C to obtain basalt fiber modified with silane coupling agent KH-550.

[0031] S2: Preparation of basalt fiber / natural latex mixture 63 parts of natural rubber latex, 0.8 parts of silica, and 7 parts of modified basalt fiber were mixed and stirred evenly. Then, 0.4 parts of sulfur, 0.4 parts of sodium dibutyldithiocarbamate accelerator, 0.3 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine antioxidant, and 0.5 parts of zinc oxide were added, and the solid content was adjusted to 37% to obtain basalt fiber / natural latex mixed rubber latex.

[0032] S3: Hand mask pretreatment After the glove mold is preheated, it is immersed in a calcium chloride coagulation solution with a mass fraction of 8wt% to ensure full contact with the surface of the glove mold. After immersion for 30 seconds, it is removed and dried, so that a layer of dried coagulating agent adheres to the glove mold. S4: Applying adhesive to the hand mask The glove mold coated with coagulant was immersed in the basalt fiber / natural latex mixture impregnation bath prepared in step S2 for 40 seconds, and then removed and preheated at 100°C for 1 minute. S5: Vulcanization The coated mold is placed in a vulcanizing furnace for vulcanization. The vulcanization conditions are set as follows: temperature 160℃, pressure 18MPa, and time 40min. S6: Demolding.

[0033] After cooling, the edges are rolled up and the material is demolded to obtain rubber gloves.

[0034] Comparative Example 1 Compared with Example 1, this example does not involve pretreatment of the basalt fibers. A method for preparing a cut-resistant medical latex glove includes the following steps: S1: Preparation of basalt fiber / natural latex mixture Mix 63 parts of natural rubber latex, 0.8 parts of silica, and 7 parts of basalt fiber. After stirring evenly, add 0.4 parts of sulfur, 0.4 parts of sodium dibutyldithiocarbamate accelerator, 0.3 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine antioxidant, and 0.5 parts of zinc oxide. Adjust the solid content to 37% to obtain basalt fiber / natural latex mixed rubber latex.

[0035] S2: Hand mask pretreatment After the glove mold is preheated, it is immersed in a calcium chloride coagulation solution with a mass fraction of 8wt% to ensure full contact with the surface of the glove mold. After immersion for 30 seconds, it is removed and dried, so that a layer of dried coagulating agent adheres to the glove mold. S3: Applying adhesive to the hand mask The glove mold coated with coagulant was immersed in the basalt fiber / natural latex mixture impregnation bath prepared in step S2 for 40 seconds, and then removed and preheated at 100°C for 1 minute. S4: Vulcanization The coated mold is placed in a vulcanizing furnace for vulcanization. The vulcanization conditions are set as follows: temperature 140℃, pressure 18MPa, and time 30min. S5: Demolding.

[0036] After cooling, the edges are rolled up and the material is demolded to obtain rubber gloves.

[0037] Detection: The tensile strength and elongation of the products prepared in Example 1 and Comparative Example 1 were tested according to GB10213-2006. The test results are shown in the table below: By comparing Examples 1, 2, and 3, it can be found that the parameter setting of the vulcanization process in the latex molding process is also crucial. Too low a temperature will affect the vulcanization speed and lead to insufficient vulcanization, while too high a temperature will lead to "over-vulcanization", which will affect the tensile strength and tear strength of the gloves. Only by finding the optimal temperature-time vulcanization point can the sample achieve the best performance.

[0038] A comparison of Example 1 and Comparative Example 1 reveals that pretreatment of basalt fibers is necessary. Modifiers can remove impurities from their surface and etch them, increasing the contact points between them and the surface of natural rubber. This effectively introduces basalt fibers into the natural rubber system and enhances its mechanical properties.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a cut-resistant medical latex glove, characterized in that, Includes the following steps: S1: The basalt fiber is subjected to surface impurity removal and surface etching, and then the basalt fiber is modified with a silane coupling agent to obtain the modified basalt fiber. S2: Prepare a mixture of basalt fiber and natural latex using the modified basalt fiber; S3: Forms a dried coagulant layer on the surface of the glove mold; S4: Immerse the glove mold obtained in step S3 in the mixture obtained in step S2 and preheat it; S5: Vulcanization; S6: Demold to obtain cut-resistant medical latex gloves.

2. The method for manufacturing the cut-resistant medical latex gloves according to claim 1, characterized in that, In step S1: The length of basalt fibers is 6~9mm; Basalt fibers are placed in an acetone solution and ultrasonically cleaned for 2-4 hours to remove impurities from their surface and simultaneously complete etching. After etching, the basalt fiber is surface treated with silane coupling agent in a water bath and under magnetic stirring for 5-8 hours. After stirring, it is cleaned with ethanol and then dried in an oven to obtain the modified basalt fiber.

3. The method for manufacturing the cut-resistant medical latex gloves according to claim 1, characterized in that, In step S2: 60-65 parts of natural rubber latex, 0.7-0.9 parts of silica, and 6-8 parts of the modified basalt fiber are mixed and stirred evenly. Then, 0.3-0.5 parts of vulcanizing agent, 0.3-0.5 parts of vulcanization accelerator, 0.2-0.4 parts of antioxidant, and 0.4-0.6 parts of zinc oxide are added to adjust the solid content to 35%-40% to obtain a mixture of basalt fiber and natural latex.

4. The method for manufacturing the cut-resistant medical latex gloves according to claim 1, characterized in that, In step S3: After preheating the glove mold to 100~130℃, immerse it in a calcium chloride coagulation solution with a mass fraction of 7~9wt% for 10~40 seconds, then remove and dry it to attach a layer of dried coagulating agent to the glove mold.

5. The method for manufacturing the cut-resistant medical latex gloves according to claim 1, characterized in that, In step S4: Soaking time is 40-60 seconds; The preheating temperature is 90~120℃, and the preheating time is 1~2 minutes.

6. The method for manufacturing the cut-resistant medical latex gloves according to claim 1, characterized in that, In step S5: The glued glove mold is placed in a vulcanizing furnace for vulcanization treatment. The vulcanization conditions are set as follows: temperature 120~160℃, pressure 12~20MPa, and time 20~40min.

7. A cut-resistant medical latex glove, characterized in that: It is prepared according to the method of any one of claims 1 to 6.

8. The cut-resistant medical latex glove according to claim 7, characterized in that: The medical latex gloves have a tensile strength greater than 12N and an elongation greater than 850%.

9. The cut-resistant medical latex glove according to claim 7, characterized in that: The thickness of the medical latex gloves is 0.1~0.25mm.

Images