CN117887154A - Nitrile glove with good wearing performance in wet environment and energy-saving preparation method - Google Patents
Nitrile glove with good wearing performance in wet environment and energy-saving preparation method Download PDFInfo
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- CN117887154A CN117887154A CN202311851224.9A CN202311851224A CN117887154A CN 117887154 A CN117887154 A CN 117887154A CN 202311851224 A CN202311851224 A CN 202311851224A CN 117887154 A CN117887154 A CN 117887154A
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- nitrile
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- accelerator
- wet environment
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- 150000002825 nitriles Chemical class 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004816 latex Substances 0.000 claims abstract description 18
- 229920000126 latex Polymers 0.000 claims abstract description 18
- 239000004094 surface-active agent Substances 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011593 sulfur Substances 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 12
- 238000004073 vulcanization Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims description 42
- 238000001035 drying Methods 0.000 claims description 41
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 33
- 238000000498 ball milling Methods 0.000 claims description 26
- 238000007598 dipping method Methods 0.000 claims description 24
- 238000002386 leaching Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 239000000701 coagulant Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 7
- -1 alkylbenzene sulfonate Chemical class 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 239000000460 chlorine Substances 0.000 claims description 7
- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- 238000005470 impregnation Methods 0.000 claims description 7
- 230000003472 neutralizing effect Effects 0.000 claims description 7
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 3
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical compound CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 claims description 2
- OPNUROKCUBTKLF-UHFFFAOYSA-N 1,2-bis(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N\C(N)=N\C1=CC=CC=C1C OPNUROKCUBTKLF-UHFFFAOYSA-N 0.000 claims 1
- FGKIZAATMHLTKO-UHFFFAOYSA-N 1-(diaminomethylideneamino)-2-(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1NC(=N)NNC(N)=N FGKIZAATMHLTKO-UHFFFAOYSA-N 0.000 claims 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 18
- 239000000203 mixture Substances 0.000 description 10
- 235000010215 titanium dioxide Nutrition 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000002791 soaking Methods 0.000 description 6
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- NRINZBKAERVHFW-UHFFFAOYSA-L zinc;dicarbamate Chemical compound [Zn+2].NC([O-])=O.NC([O-])=O NRINZBKAERVHFW-UHFFFAOYSA-L 0.000 description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 235000014102 seafood Nutrition 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005486 sulfidation Methods 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Substances CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Gloves (AREA)
Abstract
The invention discloses a nitrile glove with good wearing performance in a wet environment and an energy-saving preparation method, belonging to the technical field of glove preparation. The nitrile glove with good wearability in a wet environment comprises the following components in parts by weight: 100 parts of nitrile latex, 0.5-1.2 parts of sulfur, 0.3-0.5 part of accelerator 1, 0.2-0.35 part of accelerator 2, 0.05-0.2 part of accelerator 3, 0.7-2 parts of KOH, 0.3-1.2 parts of zinc oxide, 0-1.2 parts of titanium dioxide, 0.2-0.5 part of surfactant, 0.005-0.03 part of defoamer, 0.1-0.5 part of antioxidant and 250-400 parts of water. The method adopts a plurality of accelerators to be used together, mildly improves the activity of the accelerators, ensures that the vulcanization temperature is 10-15 ℃ lower than that of the traditional butyronitrile glove, ensures that the processability is better than that of the traditional butyronitrile glove, and provides a new choice for industry energy conservation and emission reduction.
Description
Technical Field
The invention belongs to the technical field of glove preparation, and particularly relates to a nitrile glove with good wearing performance in a wet environment and an energy-saving preparation method.
Background
At present, disposable gloves mainly comprise latex gloves, nitrile gloves, PVC gloves, PE gloves and polyurethane gloves. The butyronitrile glove is approved by the public because of the characteristics of difficult allergy, chemical solvent resistance, puncture resistance and the like. Along with the improvement of people's awareness of health protection, disposable gloves are adopted in more and more industries, especially the requirements of related industries such as food processing industry, seafood processing industry and the like on the gloves are higher and higher, the gram weight and the film thickness of the gloves are improved slightly but can not meet the requirements, and meanwhile, the gram weight and the film thickness of the gloves are improved, so that the cost is increased. In this context, how to improve the donnability of the glove in a wet environment is an urgent problem to be solved, while ensuring that the glove costs are not very different.
Disclosure of Invention
In order to solve the problems, the invention firstly selects the nitrile latex with moderate carboxyl; secondly, replacing the traditional zinc carbamate accelerator by the accelerator (combining zinc carbamate accelerator and guanidine accelerator), and then adding the accelerator into the butyronitrile latex containing titanium dioxide, food-grade zinc oxide, surfactant and pigment to prepare aqueous pre-dipping liquid to produce disposable butyronitrile gloves; in the production process control, the leaching time of the leaching process prior to sulfidation is mainly controlled.
The invention aims to provide the butyronitrile glove with good wearing performance in a wet environment and the corresponding energy-saving preparation method, the prepared glove is not easy to generate pinholes, the dimensional stability of water immersion resistance is high (less than 2%), the alcohol resistance test and the artificial sweat test are good, the good mechanical property is maintained, and meanwhile, the vulcanization temperature is 105-110 ℃, so that the energy consumption in the glove production process is reduced.
The invention is implemented by the following technical scheme:
The invention discloses a nitrile glove with good wearing performance in a wet environment, which comprises the following components in parts by weight: 100 parts of nitrile latex, 0.5-1.2 parts of sulfur, 0.3-0.5 part of accelerator 1, 0.2-0.35 part of accelerator 2, 0.05-0.2 part of accelerator 3, 0.7-2 parts of KOH, 0.3-1.2 parts of zinc oxide, 0-1.2 parts of titanium dioxide, 0.2-0.5 part of surfactant, 0.005-0.03 part of defoamer, 0.1-0.5 part of antioxidant and 250-400 parts of water.
Further, accelerator 1 is zinc dibutyl dithiocarbamate.
Further, the accelerator 2 is one of zinc diethyl dithiocarbamate or zinc dimethyl dithiocarbamate.
Further, the accelerator 3 is any one of alkaline accelerators such as diphenyl guanidine, di-o-toluene guanidine, o-toluene diguanidine, and hexamethylenetetramine.
Further, the nitrile latex is a series of carboxylated nitrile latex with 2-5% of carboxyl monomer content, such as KNL830, LG105 and the like;
the surfactant is one or two of alkylbenzene sulfonate, sodium laurylsulfate, sodium alkyl sulfate, polyvinyl alcohol and polyoxyethylene alkylphenol ether;
The defoaming agent is one or two of organosilicon defoaming agent and sec-octyl alcohol;
The antioxidant is one or two of poly (dicyclopentadiene-co-p-cresol), an anti-aging agent D and an anti-aging agent CEA;
the water is one or more of softened water, deionized water and pure water.
Further, the film thickness of the nitrile glove is 0.05-0.15mm, the tensile strength is larger than 32Mpa, the same gram weight glove has the strength which is higher than that of the traditional nitrile glove by more than 10 percent, the elongation is between 500-600 percent, the dimension deformation rate of the nitrile glove after the nitrile glove is soaked in water for 8 hours is 80 percent smaller than that of the traditional nitrile glove, and the absolute dimension deformation rate is less than 2 percent.
The invention discloses a preparation method of a nitrile glove with good wearing property in a wet environment, which comprises the following steps:
s1, prepreg production: adding three accelerators, sulfur, titanium dioxide, zinc oxide, an antioxidant and a surfactant into a ball milling tank according to the amount shown in the formula, adding water for ball milling for 3 hours, then guiding out ball milling materials for standby, and simultaneously baking to calculate the solid content; adding water, potassium hydroxide and nitrile latex into a batching stirring kettle according to a formula, stirring for 0.5h, adding a corresponding amount of ball grinding materials calculated according to the formula, adding a formula amount of defoaming agent, pre-vulcanizing for 18h, and introducing into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant, and drying;
S4, placing the hand mould impregnated and dried in the step S3 into the prepreg prepared in the step S1 for primary impregnation, and drying;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary gum dipping, and drying;
S6, curling, pre-leaching, vulcanizing, post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould impregnated and dried in the step S5 to obtain the nitrile glove with good wearability in a wet environment.
Further, the coagulant in the step S3 is any one of calcium nitrate, calcium chloride, magnesium nitrate, magnesium chloride, zinc nitrate and zinc chloride solution with the mass concentration of 3-5%;
the time for immersing the coagulant is 5-15s;
the drying temperature is 80-100 ℃ and the drying time is 8-12s.
Further, the time of the primary dipping and the secondary dipping in the step S4 and the step S5 is 5-15S;
The drying temperature is 90 ℃, and the drying time is 1-9min.
Further, the leaching time in the pre-leaching in step S6 is not less than 60S;
the vulcanization temperature is 105-110 ℃, and the vulcanization time is 17-23min.
The invention has the beneficial effects that:
1. The glove produced by the invention has the deformation rate of the soaking size of less than 2%, the elongation at break of 500-600%, the mechanical strength of the glove is over 10% higher than that of a common butyronitrile glove, the pinhole rate is low, and the detection migration quantity of food contact materials and the requirements of heavy metal composite national standards can be used in medical treatment and food processing industries (including seafood processing industries); is not easy to fall off when operating in a wet environment.
2. The accelerator is used together (especially a small amount of alkaline accelerator is compounded), the activity of the accelerator is mildly improved, the vulcanization temperature is 10-15 ℃ lower than that of the traditional nitrile glove, the processability is better than that of the traditional nitrile glove (the vulcanization temperature is lower, equipment is not required to be changed), and a new choice is provided for industrial energy conservation and emission reduction.
Drawings
The accompanying drawings are included to provide a further explanation of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic illustration of the process flow for preparing nitrile gloves of the present invention having good donning properties in a wet environment.
Detailed Description
The technical scheme of the present invention will be further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the following examples.
The raw materials of examples and comparative examples are described below:
nitrile latex: KNL830;
sulfur: industrial sulfur;
accelerator 1: zinc dibutyl dithiocarbamate;
accelerator 2: zinc diethyl dithiocarbamate;
accelerator 3: diphenyl guanidine;
KOH: analytically pure potassium hydroxide;
titanium white powder: rutile type titanium dioxide;
zinc oxide: food grade active zinc oxide;
And (2) a surfactant: alkylbenzene sulfonate (ABS);
defoaming agent: a silicon emulsion;
antioxidant: poly (dicyclopentadiene-co-p-cresol)
Water: deionized water;
Coagulant: 5% calcium nitrate solution.
Example 1
The preparation method of the nitrile glove molding process with good wearability in a wet environment comprises the following steps:
S1, prepreg production: titanium dioxide (1.0 part), zinc oxide (1.2 parts), antioxidant poly (dicyclopentadiene-co-p-cresol) (0.1 part), accelerator 1 (0.4 part), accelerator 2 (0.3 part), accelerator 3 (0.1 part), sulfur (1.0 part) and surfactant ABS (0.3 part) are added into a ball milling tank according to the formula, 10 parts of deionized water is added for ball milling for 3 hours, and then ball milling materials are led out for standby; 250 parts of deionized water, 1.0 part of potassium hydroxide and 100 parts of nitrile latex are added into a burdening stirring kettle according to a formula, after stirring for 0.5h, ball milling materials are added into the mixture, and after 0.01 part of defoamer is added, the mixture is presulfided for 18h and then is led into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant for 6S, and drying at 80 ℃ for 10S;
S4, placing the hand mould subjected to dipping and drying in the step S3 into the prepreg prepared in the step S1 for primary dipping for 10S, and drying at 90 ℃ for 1min;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary impregnation for 8S, and drying at 90 ℃ for 1min;
S6, curling, pre-leaching (60S), vulcanizing (105 ℃ for 20 min), post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould dipped and dried in the step S5 to obtain the nitrile glove with good wearability in a wet environment.
The butyronitrile glove prepared in the embodiment has the thickness of 0.055 mm, the tensile strength of the glove film of 34MPa, the elongation at break of 540%, the soaking time of 8h, the longitudinal dimensional change rate of 1.8% and the width dimensional change rate of 0.5%.
Comparative example 1
The leach time before sulfidation was adjusted to a conventional leach time in this comparative example, comprising the steps of:
S1, prepreg production: titanium dioxide (1.0 part), zinc oxide (1.2 parts), antioxidant poly (dicyclopentadiene-co-p-cresol) (0.1 part), accelerator 1 (0.4 part), accelerator 2 (0.3 part), accelerator 3 (0.1 part), sulfur (1.0 part) and surfactant ABS (0.3 part) are added into a ball milling tank according to the formula, 10 parts of deionized water is added for ball milling for 3 hours, and then ball milling materials are led out for standby; 250 parts of deionized water, 1.0 part of potassium hydroxide and 100 parts of nitrile latex are added into a burdening stirring kettle according to a formula, after stirring for 0.5h, ball milling materials are added into the mixture, and after 0.01 part of defoamer is added, the mixture is presulfided for 18h and then is led into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant for 6S, and drying at 80 ℃ for 10S;
S4, placing the hand mould subjected to dipping and drying in the step S3 into the prepreg prepared in the step S1 for primary dipping for 10S, and drying at 90 ℃ for 1min;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary impregnation for 8S, and drying at 90 ℃ for 1min;
S6, curling, pre-leaching (20S), vulcanizing (105 ℃ C., vulcanizing time 20 min), post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould dipped and dried in the step S5 to obtain the nitrile glove of the comparative example 1.
The butyronitrile glove prepared in this comparative example has a film thickness of 0.055 mm, a tensile strength of 33MPa, an elongation at break of 530%, a soaking time of 8 hours, a change rate of the long-direction dimension of 6.1% and a change rate of the wide-direction dimension of 2.3%.
Comparative example 2
The accelerator in the comparative example is changed into a traditional single accelerator, and the parts are the same, the vulcanization temperature is 105 ℃, and the leaching time is 60s, and the method comprises the following steps:
S1, prepreg production: titanium dioxide (1.0 part), zinc oxide (1.2 parts), antioxidant poly (dicyclopentadiene-co-p-cresol) (0.1 part), accelerator 1 (0.8 part), sulfur (1.0 part) and surfactant ABS (0.3 part) are added into a ball milling tank according to the amount shown in the formula, 10 parts of deionized water is added for ball milling for 3 hours, and then ball milling materials are led out for standby; 250 parts of deionized water, 1.0 part of potassium hydroxide and 100 parts of nitrile latex are added into a burdening stirring kettle according to a formula, after stirring for 0.5h, ball milling materials are added into the mixture, and after 0.01 part of defoamer is added, the mixture is presulfided for 18h and then is led into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant for 6S, and drying at 80 ℃ for 10S;
S4, placing the hand mould subjected to dipping and drying in the step S3 into the prepreg prepared in the step S1 for primary dipping for 10S, and drying at 90 ℃ for 1min;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary impregnation for 8S, and drying at 90 ℃ for 1min;
s6, curling, pre-leaching (60S), vulcanizing (105 ℃ C., vulcanizing time 20 min), post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould dipped and dried in the step S5 to obtain the butyronitrile glove of the comparative example 2.
The butyronitrile glove prepared in this comparative example has a film thickness of 0.055 mm, a tensile strength of 22MPa, an elongation at break of 570%, a soaking time of 8 hours, a change rate of the long-direction dimension of 5.9% and a change rate of the wide-direction dimension of 2.2%.
Comparative example 3
The accelerator in the comparative example is changed into a traditional single accelerator, the vulcanization temperature is 120 ℃ and the leaching time is 60 seconds, and the method comprises the following steps:
S1, prepreg production: titanium dioxide (1.0 part), zinc oxide (1.2 parts), antioxidant poly (dicyclopentadiene-co-p-cresol) (0.1 part), accelerator 1 (0.8 part), sulfur (1.0 part) and surfactant ABS (0.3 part) are added into a ball milling tank according to the amount shown in the formula, 10 parts of deionized water is added for ball milling for 3 hours, and then ball milling materials are led out for standby; 250 parts of deionized water, 1.0 part of potassium hydroxide and 100 parts of nitrile latex are added into a burdening stirring kettle according to a formula, after stirring for 0.5h, ball milling materials are added into the mixture, and after 0.01 part of defoamer is added, the mixture is presulfided for 18h and then is led into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant for 6S, and drying at 80 ℃ for 10S;
S4, placing the hand mould subjected to dipping and drying in the step S3 into the prepreg prepared in the step S1 for primary dipping for 10S, and drying at 90 ℃ for 1min;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary impregnation for 8S, and drying at 90 ℃ for 1min;
S6, curling, pre-leaching (60S), vulcanizing (120 ℃ C., vulcanizing time is 20 min), post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould dipped and dried in the step S5 to obtain the butyronitrile glove of the comparative example 3.
The butyronitrile glove prepared in this comparative example has a film thickness of 0.055 mm, a tensile strength of 29MPa, an elongation at break of 540%, a soaking time of 8 hours, a change rate of the long-direction dimension of 5.4% and a change rate of the wide-direction dimension of 2.1%.
Comparative example 4
In this comparative example, a single accelerator was used, the same parts were used, the cure was restored to 120 ℃ and the conventional leach time was 20s, a conventional commercially available nitrile glove, comprising the steps of:
S1, prepreg production: titanium dioxide (1.0 part), zinc oxide (1.2 parts), antioxidant poly (dicyclopentadiene-co-p-cresol) (0.1 part), accelerator 1 (0.8 part), sulfur (1.0 part) and surfactant ABS (0.3 part) are added into a ball milling tank according to the amount shown in the formula, 10 parts of deionized water is added for ball milling for 3 hours, and then ball milling materials are led out for standby; 250 parts of deionized water, 1.0 part of potassium hydroxide and 100 parts of nitrile latex are added into a burdening stirring kettle according to a formula, after stirring for 0.5h, ball milling materials are added into the mixture, and after 0.01 part of defoamer is added, the mixture is presulfided for 18h and then is led into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant for 6S, and drying at 80 ℃ for 10S;
S4, placing the hand mould subjected to dipping and drying in the step S3 into the prepreg prepared in the step S1 for primary dipping for 10S, and drying at 90 ℃ for 1min;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary impregnation for 8S, and drying at 90 ℃ for 1min;
S6, curling, pre-leaching (20S), vulcanizing (120 ℃ for 20 min), post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould dipped and dried in the step S5 to obtain the butyronitrile glove of the comparative example 4.
The butyronitrile glove prepared in this comparative example has a film thickness of 0.055 mm, a tensile strength of 27MPa, an elongation at break of 530%, a soaking time of 8 hours, a longitudinal dimensional change rate of 10.5% and a width dimensional change rate of 3.7%.
Test examples
The nitrile gloves of example 1 and comparative examples 1-4 were subjected to performance testing and wearability evaluation, and the test results are shown in tables 1 and 2.
TABLE 1 nitrile glove Performance test results
Table 2 results of the nitrile glove donning evaluation test
As can be seen from the results in tables 1 and 2, the performance of the nitrile glove with good donning performance in wet environment exceeds that of the glove produced by the traditional process, the increase of the alcohol-resistant lactic acid mixed solution and the artificial sweat test time of the glove is indirectly proved, the glove is improved in the use process of the glove, namely the alcohol disinfection and the wearing (sweat stain influence) of the glove are improved, and particularly the water-resistant size deformation rate is far smaller than that of the conventional nitrile glove, so that the glove produced by the formula and the process thereof has good donning performance in wet environment.
In addition, the zinc carbamate accelerator is compounded with a small amount of alkaline accelerator in the glove formula, so that the activity of the accelerator is further stimulated, the reaction speed and the crosslinking density are improved, the vulcanization temperature can be further reduced, and the glove is suitable for the national policy and has great advantages.
In the foregoing, the present invention is merely preferred embodiments, which are based on different implementations of the overall concept of the invention, and the protection scope of the invention is not limited thereto, and any changes or substitutions easily come within the technical scope of the present invention as those skilled in the art should not fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The nitrile glove with good wearing performance in a wet environment is characterized by comprising the following components in parts by weight: 100 parts of nitrile latex, 0.5-1.2 parts of sulfur, 0.3-0.5 part of accelerator 1, 0.2-0.35 part of accelerator 2, 0.05-0.2 part of accelerator 3, 0.7-2 parts of KOH, 0.3-1.2 parts of zinc oxide, 0-1.2 parts of titanium dioxide, 0.2-0.5 part of surfactant, 0.005-0.03 part of defoamer, 0.1-0.5 part of antioxidant and 250-400 parts of water.
2. The nitrile glove which is excellent in donning in wet environment according to claim 1, wherein accelerator 1 is zinc dibutyldithiocarbamate.
3. The nitrile glove with good donning properties in wet environment according to claim 1, wherein the accelerator 2 is one of zinc diethyldithiocarbamate or zinc dimethyldithiocarbamate.
4. The nitrile glove excellent in donning in wet environment according to claim 1, wherein the accelerator 3 is any one of diphenylguanidine, di-o-tolylguanidine, o-tolylbiguanidine and hexamethylenetetramine.
5. The nitrile glove with good donning properties in wet environment according to claim 1, characterized in that the nitrile latex is a series of carboxylated nitrile latex with a carboxyl monomer content of 2-5%;
the surfactant is one or two of alkylbenzene sulfonate, sodium laurylsulfate, sodium alkyl sulfate, polyvinyl alcohol and polyoxyethylene alkylphenol ether;
The defoaming agent is one or two of organosilicon defoaming agent and sec-octyl alcohol;
The antioxidant is one or two of poly (dicyclopentadiene-co-p-cresol), an anti-aging agent D and an anti-aging agent CEA;
the water is one or more of softened water, deionized water and pure water.
6. The nitrile glove with good donning properties in wet environment according to claim 1, wherein the nitrile glove has a thickness of 0.05-0.15mm, a tensile strength of greater than 32Mpa, an elongation of between 500-600% and a dimensional change rate of < 2% after the nitrile glove is immersed in water for 8 hours.
7. A method for preparing nitrile gloves of claim 1-6 which are excellent in donning in wet environment, comprising the steps of:
s1, prepreg production: adding three accelerators, sulfur, titanium dioxide, zinc oxide, an antioxidant and a surfactant into a ball milling tank according to the amount shown in the formula, adding water for ball milling for 3 hours, then guiding out ball milling materials for standby, and simultaneously baking to calculate the solid content; adding water, potassium hydroxide and nitrile latex into a batching stirring kettle according to a formula, stirring for 0.5h, adding a corresponding amount of ball grinding materials calculated according to the formula, adding a formula amount of defoaming agent, pre-vulcanizing for 18h, and introducing into a gum dipping tank;
s2, carrying out acid washing, first water washing, alkali washing and second water washing on the hand mould;
s3, immersing the hand mold cleaned in the step S2 into a coagulant, and drying;
S4, placing the hand mould impregnated and dried in the step S3 into the prepreg prepared in the step S1 for primary impregnation, and drying;
S5, placing the hand mould impregnated and dried in the step S4 into the prepreg prepared in the step S1 for secondary gum dipping, and drying;
S6, curling, pre-leaching, vulcanizing, post-leaching, chlorine washing, neutralizing, washing, drying and demolding the hand mould impregnated and dried in the step S5 to obtain the nitrile glove with good wearability in a wet environment.
8. The method for producing nitrile gloves of claim 7, wherein the coagulant in step S3 is any one of calcium nitrate, calcium chloride, magnesium nitrate, magnesium chloride, zinc nitrate and zinc chloride solution having a mass concentration of 3-5%;
the time for immersing the coagulant is 5-15s;
the drying temperature is 80-100 ℃ and the drying time is 8-12s.
9. The method for producing nitrile gloves with excellent donning properties in wet environment according to claim 7, wherein the time for the primary dipping and the secondary dipping in step S4 and step S5 is 5-15S;
The drying temperature is 90 ℃, and the drying time is 1-9min.
10. The method for producing nitrile gloves of claim 7, wherein the pre-leach time for leaching in step S6 is not less than 60S;
the vulcanization temperature is 105-110 ℃, and the vulcanization time is 17-23min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311851224.9A CN117887154A (en) | 2023-12-29 | 2023-12-29 | Nitrile glove with good wearing performance in wet environment and energy-saving preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311851224.9A CN117887154A (en) | 2023-12-29 | 2023-12-29 | Nitrile glove with good wearing performance in wet environment and energy-saving preparation method |
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