Anti-cutting glove

Abstract

The invention relates to the technical field of gloves, and discloses an anti-cutting glove which is formed by mixing and vulcanizing natural latex serving as a main raw material and modified boron nitride nanosheets and the like serving as auxiliary materials, the surfaces of the modified boron nitride nanosheets are modified with macromolecular substances, and the modified boron nitride nanosheets are not prone to cracking in the subsequent vulcanizing process. Boron nitride nanosheets are arranged in the natural latex base material and interact with natural latex molecular chains, so that good interface performance can be generated between the boron nitride nanosheets and the natural latex, the boron nitride nanosheets are promoted to be uniformly dispersed in the natural latex base material, on one hand, the special sheet structures of the boron nitride nanosheets can form a continuous physical barrier layer in the glove, and the physical barrier layer is formed in the glove; the puncture resistance of the glove is improved by utilizing the physical barrier effect, and meanwhile, the physical barrier effect can also effectively prevent the glove from being cut and scratched. Besides, the macromolecular substance structure contains a benzene ring structure of biphenyl, so that the mechanical strength of the glove can be improved, and the glove shows excellent comprehensive performance.

Description

Technical Field

[0001] The present invention relates to the technical field of gloves, and particularly relates to a cut-resistant glove. Background Art

[0002] In high-level biosafety laboratories, experimental activities such as sampling or dissecting infected individuals are key operations for studying the pathogenic mechanisms of highly pathogenic pathogens, and are important links in understanding and obtaining the pathogens themselves and understanding and studying their infections. In addition, in clinical practice, surgeons also often use sharp scalpels and sharp instruments for surgical activities, and are also at risk of stabbing and cutting surgical personnel. Therefore, wearing protective gloves has become a consensus in related industries.

[0003] While existing biosafety protective gloves increase the puncture resistance and cut resistance strength, due to the increased thickness or too strong rigidity, the wearing experience is poor, the touch is poor, and the operation is inconvenient, especially difficult to meet the anatomical work that requires fine operation. In order to ensure the experience, at present, natural latex is generally used as the base material of protective gloves. Although it can have a good touch, the puncture resistance and cut resistance performance are not good, so the protective performance is lacking. Based on this, developing a biosafety protective glove with puncture resistance, cut and scratch resistance, and excellent touch is an urgent need for ordinary clinical surgical operations and high-level biosafety experimental activities and protection.

[0004] At present, by adding toughening agents to modify natural rubber, its toughness can be improved to a certain extent, which can play a certain role in enhancing the strength of natural rubber gloves. However, this method has little effect on enhancing the puncture resistance of gloves, and there are still deficiencies in practical applications. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides a cut-resistant glove.

[0007] (2) Technical Solutions

[0008] A cut-resistant glove is made of the following raw materials according to the weight parts:

[0009]

[0010] As a further solution of the present invention, the preparation method of the cut-resistant glove includes the following steps;

[0011] The first step is to weigh each raw material according to the weight parts and set aside;

[0012] In the second step, add each raw material into a stirring kettle, start stirring, set the stirring rate to 100 - 200 rpm, and mechanically stir until evenly mixed to form a premix;

[0013] In the third step, wash the mold with water at 90 - 100 °C. After washing and drying completely, then immerse it in a coagulant, and then dry it completely at a temperature of 80 - 90 °C. Then impregnate the premix into the mold, and conduct heat drying at a temperature of 90 - 110 °C. Finally, dry and vulcanize it at a temperature of 100 - 120 °C for 20 - 40 min to obtain the cut-resistant gloves.

[0014] As a further solution of the present invention, the preparation method of the modified boron nitride nanosheets includes the following steps:

[0015] In step one, disperse the hydroxylated boron nitride nanosheets in an ethanol solution with a volume fraction of 60 - 70%. After forming a homogeneous dispersion, then add an amino silane coupling agent to the dispersion, and then gradually raise the temperature to 70 - 80 °C. After heat preservation and stirring for 6 - 8 h, cool down and discharge the material, and collect the product to obtain the amino-functionalized boron nitride nanosheets;

[0016] In step two, disperse the amino-functionalized boron nitride nanosheets in N,N-dimethylformamide, and then add maleic anhydride and a catalyst to the formed homogeneous dispersion. After adding, introduce nitrogen for protection, start the heating program, and raise the temperature to 60 - 80 °C at a heating rate of 2 - 4 °C / min. After stirring for 1 - 2 h, then add 4,4'-dihydroxymethyl biphenyl, and then raise the temperature to 100 - 120 °C and continuously stir for 8 - 12 h. Then stop heating, remove nitrogen, cool down and discharge the material, and centrifuge the product to obtain the modified boron nitride nanosheets.

[0017] As a further solution of the present invention, in step one, the amino silane coupling agent is any one of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, or N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.

[0018] As a further solution of the present invention, the preparation method of the hydroxylated boron nitride nanosheets is:

[0019] Ultrasonically mix the boron nitride nanosheets and hydrogen peroxide for 10 - 30 min, then place them under stirring at a temperature of 80 - 85 °C for 1 - 2 h, then raise the temperature to 90 - 95 °C and continuously stir for 3 - 6 h, and then lower the temperature to 75 - 80 °C and keep warm for 6 - 9 h, discharge the material, and separate out the solid material to obtain the hydroxylated boron nitride nanosheets.

[0020] As a further solution of the present invention, in step two, the catalyst is p-toluenesulfonic acid or trifluoromethanesulfonic acid.

[0021] As a further solution of the present invention, in step two, the mass ratio of the amino-functionalized boron nitride nanosheets, maleic anhydride, and 4,4'-dihydroxymethylbiphenyl is 1:3-5:6-10.

[0022] In the above technical solution, first, hydrogen peroxide is used to hydroxylate the boron nitride nanosheets, so that a large number of hydroxyl substituents are generated on the surface of the boron nitride nanosheets. Then, an amino silane coupling agent is used to modify the surface thereof, and the amino-functionalized boron nitride nanosheets can be prepared. Using the amino groups on the surface of the boron nitride nanosheets as active sites, and using maleic anhydride and 4,4'-dihydroxymethylbiphenyl as chain extender monomers, under the action of a catalyst, chain extension polymerization is carried out on the surface of the boron nitride nanosheets to obtain boron nitride nanosheets modified with macromolecular substances, that is, modified boron nitride nanosheets.

[0023] As a further solution of the present invention, the antioxidant is any one of antioxidant 1010, antioxidant 1076, or antioxidant 168; the anti-aging agent is anti-aging agent BHT or anti-aging agent 4010.

[0024] As a further solution of the present invention, the cross-linking agent is benzoyl peroxide or dicumyl peroxide.

[0025] As a further solution of the present invention, the vulcanizing agent is sulfur.

[0026] (III) Beneficial technical effects

[0027] The modified boron nitride nanosheets prepared by the present invention are boron nitride nanosheets modified with macromolecular substances. Since a large number of unsaturated alkenyl substituents are contained in the structure of the macromolecular substances, during the subsequent vulcanization process, they can interact with the molecular chains of natural latex, so that good interfacial properties can be generated between the boron nitride nanosheets and natural latex, thereby promoting the uniform dispersion of the boron nitride nanosheets in the natural latex substrate. On the one hand, the special sheet-like structure of the boron nitride nanosheets can form a continuous physical barrier layer in the glove. Using the effect of physical barrier, the puncture resistance of the glove can be improved, and at the same time, this physical barrier effect can also effectively prevent the glove from being cut and scratched. In addition, the benzene ring structure of biphenyl is contained in the structure of the macromolecular substances, which can also help to improve the mechanical strength of the glove, so that the glove exhibits excellent comprehensive performance. Specific embodiments

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below. Preferred embodiments of the present invention are given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0029] Preparation Example 1

[0030] Preparation of modified boron nitride nanosheets:

[0031] Step 1: Ultrasonically mix 3 g of boron nitride nanosheets with 100 mL of 30% hydrogen peroxide by mass for 20 min, then place it under stirring at a temperature of 85 °C for 2 h, then raise the temperature to 95 °C and continue stirring for 4 h, then lower the temperature to 80 °C and keep it warm for 8 h, discharge the material, and separate the solid material to obtain hydroxylated boron nitride nanosheets;

[0032] Step 2: Disperse 2.6 g of hydroxylated boron nitride nanosheets in an ethanol solution with a volume fraction of 70%. After forming a homogeneous dispersion, add 3.5 g of 3-aminopropyltriethoxysilane to the dispersion, then gradually raise the temperature to 75 °C, keep it warm and stir for 8 h, then cool and discharge the material, and collect the product to obtain amino-functionalized boron nitride nanosheets;

[0033] Step 3: Disperse 1.5 g of amino-functionalized boron nitride nanosheets in N,N-dimethylformamide, then add 5 g of maleic anhydride and p-toluenesulfonic acid to the formed homogeneous dispersion. After adding, introduce nitrogen for protection, start the heating program, and raise the temperature to 70 °C at a heating rate of 2 °C / min. After stirring for 1 h, add 12 g of 4,4'-dihydroxymethylbiphenyl, then raise the temperature to 110 °C and continue stirring for 9 h. Then stop heating, remove nitrogen, cool and discharge the material, and centrifuge the product to obtain modified boron nitride nanosheets.

[0034] Using the soap back-titration method, take 0.3 g of modified boron nitride nanosheets as the test sample and conduct a titration test experiment to analyze the ester group content of the sample. The results show that the ester group content of the sample is 8.174 mmol / g. It can be speculated that this ester group is formed by the ring-opening esterification of maleic anhydride.

[0035] Example 1

[0036] A cut-resistant glove is made of the following raw materials by weight:

[0037]

[0038] The preparation method of the cut-resistant glove includes the following steps;

[0039] First step: Weigh each raw material according to the weight parts and set aside;

[0040] Second step, add each raw material to a stirring kettle, start stirring, set the stirring rate to 100 rpm, and mechanically stir until evenly mixed to form a premix;

[0041] Step 3: Wash the mold with water at 90°C. After washing and drying completely, immerse it in the coagulant, then dry it completely at a temperature of 80°C. Then impregnate the pre-mixed material into the mold and conduct heat drying at a temperature of 90°C. Finally, dry and vulcanize at a temperature of 100°C for 40 minutes to obtain the cut-resistant gloves.

[0042] The preparation method of the modified boron nitride nanosheets is shown in Preparation Example 1, and the same applies hereinafter.

[0043] Example 2

[0044] A pair of cut-resistant gloves is made of the following raw materials by weight:

[0045]

[0046] The preparation method of the cut-resistant gloves includes the following steps:

[0047] Step 1: Weigh each raw material according to the weight parts and set aside.

[0048] Step 2: Add each raw material to a stirring kettle, start stirring, set the stirring rate to 150 rpm, and mechanically stir until evenly mixed to form a pre-mixed material.

[0049] Step 3: Wash the mold with water at 100°C. After washing and drying completely, immerse it in the coagulant, then dry it completely at a temperature of 90°C. Then impregnate the pre-mixed material into the mold and conduct heat drying at a temperature of 100°C. Finally, dry and vulcanize at a temperature of 110°C for 30 minutes to obtain the cut-resistant gloves.

[0050] Example 3

[0051] A pair of cut-resistant gloves is made of the following raw materials by weight:

[0052]

[0053]

[0054] The preparation method of the cut-resistant gloves includes the following steps:

[0055] Step 1: Weigh each raw material according to the weight parts and set aside.

[0056] Step 2: Add each raw material to a stirring kettle, start stirring, set the stirring rate to 200 rpm, and mechanically stir until evenly mixed to form a pre-mixed material.

[0057] Step 3: Wash the mold with water at 100°C. After washing, dry it completely, then immerse it in the coagulant, and then dry it completely at a temperature of 90°C. Then impregnate the mold with the premix and perform hot drying at a temperature of 110°C. Finally, dry and vulcanize at a temperature of 120°C for 20 min to obtain the cut-resistant gloves.

[0058] Comparative Example 1

[0059] A pair of cut-resistant gloves is made of the following raw materials by weight:

[0060]

[0061] The preparation method of the cut-resistant gloves includes the following steps;

[0062] Step 1: Weigh each raw material according to the weight parts and set aside;

[0063] Step 2: Add each raw material to the stirring kettle, start stirring, set the stirring rate to 150 rpm, and mechanically stir until evenly mixed to form a premix;

[0064] Step 3: Wash the mold with water at 100°C. After washing, dry it completely, then immerse it in the coagulant, and then dry it completely at a temperature of 90°C. Then impregnate the mold with the premix and perform hot drying at a temperature of 100°C. Finally, dry and vulcanize at a temperature of 110°C for 30 min to obtain the cut-resistant gloves.

[0065] Comparative Example 2

[0066] A pair of cut-resistant gloves is made of the following raw materials by weight:

[0067]

[0068] The preparation method of the cut-resistant gloves includes the following steps;

[0069] Step 1: Weigh each raw material according to the weight parts and set aside;

[0070] Step 2: Add each raw material to the stirring kettle, start stirring, set the stirring rate to 150 rpm, and mechanically stir until evenly mixed to form a premix;

[0071] Step 3: Wash the mold with water at 100°C. After washing, dry it completely, then immerse it in the coagulant, and then dry it completely at a temperature of 90°C. Then impregnate the mold with the premix and perform hot drying at a temperature of 100°C. Finally, dry and vulcanize at a temperature of 110°C for 30 min to obtain the cut-resistant gloves.

[0072] Test Example

[0073] Tensile strength and elongation at break tests were carried out with reference to the standard GB / T 1040.3 - 2006;

[0074] Puncture resistance tests were carried out with reference to the standard GB / T 37841 - 2019;

[0075] The test results are recorded in the following table:

[0076] Tensile strength / MPa Elongation at break / % Puncture resistance strength / N / mm Example 1 36.8 351.2 382 Example 2 36.9 352.7 385 Example 3 36.6 350.6 383 Comparative example 1 32.1 281.9 314 Comparative example 2 26.4 198.1 209

[0077] Enlightened by the ideal embodiments of the present invention, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A cut-resistant glove, characterized in that: The composition is prepared from the following raw materials in parts by weight:

2. The cut-resistant glove according to claim 1, characterized in that: The method for preparing the cut-resistant gloves comprises the following steps: The first step is to weigh each raw material according to the weight and set aside; The second step is to add all the raw materials into a stirring tank, start stirring, set the stirring rate to 100-200 rpm, and mechanically stir until the mixture is uniformly mixed to form a premix; The third step is to clean the mold with 90-100℃ water, dry it completely, then immerse it in a coagulant, and dry it at 80-90℃. Then, immerse the premix into the mold and heat dry it at 90-110℃. Finally, dry and vulcanize it at 100-120℃ for 20-40min to produce cut-resistant gloves.

3. The cut-resistant glove according to claim 1, characterized in that: The preparation method of the modified boron nitride nanosheets comprises the following steps: Step 1: using an aminosilane coupling agent to modify the surface of hydroxylated boron nitride nanosheets to form amino-functionalized boron nitride nanosheets; Step 2: Disperse the amino-functionalized boron nitride nanosheets in N,N-dimethylformamide, and then add maleic anhydride and a catalyst to the formed uniform dispersion. After the addition, introduce nitrogen for protection, start the heating program, increase the temperature to 60-80°C at a heating rate of 2-4°C / min, stir for 1-2h, then add 4,4'-dihydroxymethylbiphenyl, and then increase the temperature to 100-120°C. After continuous stirring for 8-12h, stop heating, remove nitrogen, cool the material, and centrifuge the product to obtain modified boron nitride nanosheets.

4. The cut-resistant glove according to claim 3, characterized in that: In step 1, the aminosilane coupling agent is any one of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane or N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.

5. The cut-resistant glove according to claim 3, characterized in that: In step 1, the preparation method of the hydroxylated boron nitride nanosheets is: The boron nitride nanosheets are ultrasonically mixed with hydrogen peroxide for 10-30 minutes, then stirred at 80-85°C for 1-2 hours, then the temperature is raised to 90-95°C, and stirring is continued for 3-6 hours, and then the temperature is lowered to 75-80°C, and kept warm for 6-9 hours, and the material is discharged and the solid material is separated to obtain hydroxylated boron nitride nanosheets.

6. The cut-resistant glove according to claim 3, characterized in that: In step 2, the catalyst is p-toluenesulfonic acid or trifluoromethanesulfonic acid.

7. The cut-resistant glove according to claim 3, characterized in that: In step 2, the mass ratio of the amino-functionalized boron nitride nanosheets, maleic anhydride and acid 4,4'-dihydroxymethylbiphenyl is 1:3-5:6-10.

8. The cut-resistant glove according to claim 1, characterized in that: The antioxidant is any one of antioxidant 1010, antioxidant 1076 or antioxidant 168; the antioxidant is antioxidant BHT or antioxidant 4010.

9. The cut-resistant glove according to claim 1, characterized in that: The cross-linking agent is benzoyl peroxide or dicumyl peroxide.

10. The cut-resistant glove according to claim 1, characterized in that: The vulcanizing agent is sulfur.

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