CN117229556A - Acid and alkali resistant glove and preparation method thereof - Google Patents
Acid and alkali resistant glove and preparation method thereof Download PDFInfo
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- CN117229556A CN117229556A CN202311522126.0A CN202311522126A CN117229556A CN 117229556 A CN117229556 A CN 117229556A CN 202311522126 A CN202311522126 A CN 202311522126A CN 117229556 A CN117229556 A CN 117229556A
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- alkali resistant
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- 239000002253 acid Substances 0.000 title claims abstract description 109
- 239000003513 alkali Substances 0.000 title claims abstract description 102
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000004816 latex Substances 0.000 claims abstract description 92
- 229920000126 latex Polymers 0.000 claims abstract description 92
- 238000001035 drying Methods 0.000 claims abstract description 55
- 239000000701 coagulant Substances 0.000 claims abstract description 26
- 239000007864 aqueous solution Substances 0.000 claims abstract description 23
- 238000004073 vulcanization Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 59
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 239000003795 chemical substances by application Substances 0.000 claims description 34
- 229920001973 fluoroelastomer Polymers 0.000 claims description 33
- 238000007598 dipping method Methods 0.000 claims description 26
- 239000003086 colorant Substances 0.000 claims description 24
- 239000000706 filtrate Substances 0.000 claims description 24
- 229920001971 elastomer Polymers 0.000 claims description 22
- 229920005557 bromobutyl Polymers 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 19
- 239000005543 nano-size silicon particle Substances 0.000 claims description 19
- 235000012239 silicon dioxide Nutrition 0.000 claims description 19
- 239000010426 asphalt Substances 0.000 claims description 15
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 14
- 239000007822 coupling agent Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 125000005233 alkylalcohol group Chemical group 0.000 claims description 7
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 7
- 235000013539 calcium stearate Nutrition 0.000 claims description 7
- 239000008116 calcium stearate Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 150000002978 peroxides Chemical class 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000003929 acidic solution Substances 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000000126 substance Substances 0.000 abstract description 13
- 238000007654 immersion Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 229920005549 butyl rubber Polymers 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical group ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical group CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- HZZIZUVEOAXDIE-UHFFFAOYSA-N carbamic acid cyclohexane-1,1-diamine Chemical group C(N)(O)=O.NC1(CCCCC1)N HZZIZUVEOAXDIE-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- PHHWLDOIMGFHOZ-UHFFFAOYSA-L disodium;dinaphthalen-1-ylmethanedisulfonate Chemical group [Na+].[Na+].C1=CC=C2C(C(C=3C4=CC=CC=C4C=CC=3)(S(=O)(=O)[O-])S([O-])(=O)=O)=CC=CC2=C1 PHHWLDOIMGFHOZ-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000011504 laterite Substances 0.000 description 1
- 229910001710 laterite Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052957 realgar Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gloves (AREA)
Abstract
The invention discloses an acid and alkali resistant glove and a preparation method thereof, and relates to the technical field of gloves, and the preparation method comprises the following preparation steps: the hand mould is sequentially immersed in coagulant aqueous solution, compact latex and acid and alkali resistant latex, the drying treatment is carried out after each immersion, the wear resistant latex is sprayed on one side of the palm of the acid and alkali resistant glove, the drying is carried out, the vulcanization, the drying, the cooling and the demoulding treatment are sequentially carried out, the preparation process is safe and environment-friendly, and the prepared acid and alkali resistant glove has good acid and alkali resistance, wear resistance and tear resistance, and is more suitable for the chemical industry field.
Description
Technical Field
The invention relates to the technical field of gloves, in particular to an acid and alkali resistant glove and a preparation method thereof.
Background
The nitrile latex glove is prepared by taking nitrile rubber as a raw material and adopting the steps of vulcanization and the like. The nitrile latex glove has good organic chemical resistance, good physical performance, antistatic performance and the like, is widely applied to the fields of food enterprises, household labor, aquaculture and the like, has certain organic chemical resistance, but has limited pH resistance and certain limitation when applied to the chemical field.
Disclosure of Invention
Aiming at the defects existing in the prior art, one of the purposes of the invention is to provide a preparation method of the acid and alkali resistant glove, the preparation process is safe and environment-friendly, and the other purpose of the invention is to provide the acid and alkali resistant glove which has good compactness, strong acid and alkali resistance and wear resistance.
One of the purposes of the invention is realized by adopting the following technical scheme:
the preparation method of the acid and alkali resistant glove comprises the following preparation steps: sequentially dipping a hand die in a coagulant aqueous solution, compact latex and acid and alkali resistant latex, drying after each dipping, spraying the wear resistant latex on one side of the palm of the acid and alkali resistant glove, drying, and sequentially vulcanizing, drying, cooling and demolding to obtain the acid and alkali resistant glove;
the compact latex comprises the following components in parts by weight: 10-20 parts of hydrogenated nitrile rubber, 60-80 parts of brominated butyl rubber, 6-8 parts of modified asphalt, 5-10 parts of a first accelerator, 6-12 parts of a first vulcanizing agent, 1-3 parts of a dispersing agent and 1-3 parts of a defoaming agent;
the acid and alkali resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 3-5 parts of a second vulcanizing agent, 3-4 parts of a second accelerator, 1-3 parts of an acid absorber and 3-4 parts of a coloring agent;
the wear-resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 10-15 parts of nano silicon dioxide, 5-9 parts of coupling agent, 3-5 parts of second vulcanizing agent, 3-4 parts of second accelerator, 1-3 parts of acid absorber and 3-4 parts of coloring agent.
Preferably, the hand mould is immersed in the coagulant aqueous solution for 40-50 s, and the filtrate is dried at 50-60 ℃ to form a coagulant layer; then dipping the hand mould in the compact latex for 20-30 s, drying the filtrate at 65-75 ℃, dipping the hand mould in the compact latex again for 10-20 s, and drying the filtrate at 65-75 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20-30 s, and drying the filtrate at 65-75 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10-15 s, drying at 65-75 ℃, forming a wear-resistant layer on the surface of the palm, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
Preferably, the preparation steps of the compact latex are as follows: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the brominated butyl rubber raw rubber, mixing the plasticated hydrogenated nitrile rubber, the plasticated brominated butyl rubber and the modified asphalt, and adding a first accelerator, a first vulcanizing agent, a dispersing agent and a defoaming agent to prepare the compact latex.
Preferably, the preparation steps of the acid and alkali resistant latex are as follows: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, and adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the acid and alkali resistant latex.
Preferably, the preparation steps of the wear-resistant latex are as follows: firstly, mixing nano silicon dioxide and a coupling agent to obtain modified nano silicon dioxide; and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, adding modified nano silicon dioxide, and then adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the wear-resistant latex.
Preferably, the coagulant aqueous solution comprises the following components in parts by weight: 20-30 parts of calcium nitrate, 1-3 parts of ethoxylated alkyl alcohol, 2-6 parts of calcium stearate and 60-80 parts of water, and the preparation steps are as follows: and (3) dissolving calcium nitrate in water, then adding ethoxylated alkyl alcohol and calcium stearate, uniformly stirring, and filtering to obtain the coagulant aqueous solution.
Preferably, the glove mold is dipped in a coagulant aqueous solution, a dense latex and an acid and alkali resistant latex in this order, and then dried, and then hemmed at the glove opening.
Preferably, the hand mould is pretreated before impregnation, and the steps are as follows: immersing the hand mould in an acidic solution for primary cleaning, drying, immersing in an alkaline solution for secondary cleaning, drying, immersing in an aqueous solution for tertiary cleaning, and drying.
Preferably, the first vulcanizing agent includes sulfur and peroxide.
The second purpose of the invention is realized by adopting the following technical scheme:
an acid and alkali resistant glove is prepared by the preparation method of the acid and alkali resistant glove.
The beneficial effects of the invention are as follows:
1. the brominated butyl rubber is applied to the compact layer, so that the hands of a user can be well protected, and meanwhile, a small amount of hydrogenated nitrile rubber is doped in the compact layer, and the hydrogenated nitrile rubber has certain chemical corrosion resistance, so that the compact layer has good compactness and can endure certain acid-base corrosion;
2. the compact layer is in the acid-alkali resistant layer and the wear-resistant layer, liquid can reach the compact layer only after passing through the acid-alkali resistant layer and the wear-resistant layer, and the compact layer has no acid-alkali resistance and the wear-resistant layer, but the compact layer has little influence on the compact layer due to less liquid permeation quantity at the compact layer;
3. the fluororubber is applied to the acid-alkali resistant layer, so that the glove can be well protected from acid-alkali corrosion, and meanwhile, the hydrogenated nitrile rubber is added to the acid-alkali resistant layer, so that the raw material cost can be controlled, and the prepared glove has excellent acid-alkali resistance;
4. the main components in the wear-resistant layer and the acid and alkali resistant layer are consistent, nano silicon dioxide is added in the wear-resistant layer, the nano silicon dioxide is uniformly distributed in a network structure of hydrogenated nitrile rubber and fluororubber by adopting a coupling agent, and the wear resistance of the glove surface is enhanced;
5. the components of the compact latex, the acid and alkali resistant latex and the wear resistant latex all contain hydrogenated nitrile rubber, when vulcanization treatment is carried out, the compact layer, the acid and alkali resistant layer and the wear resistant layer cannot be layered, the adjacent layers are mutually penetrated, no obvious limit exists, and the performance of the prepared glove is stable.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described below.
The invention provides a preparation method of acid and alkali resistant gloves, which comprises the following preparation steps: sequentially dipping a hand die in a coagulant aqueous solution, compact latex and acid and alkali resistant latex, drying after each dipping, spraying the wear resistant latex on one side of the palm of the acid and alkali resistant glove, drying, and sequentially vulcanizing, drying, cooling and demolding to obtain the acid and alkali resistant glove;
the compact latex comprises the following components in parts by weight: 10-20 parts of hydrogenated nitrile rubber, 60-80 parts of brominated butyl rubber, 6-8 parts of modified asphalt, 5-10 parts of a first accelerator, 6-12 parts of a first vulcanizing agent, 1-3 parts of a dispersing agent and 1-3 parts of a defoaming agent;
the acid and alkali resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 3-5 parts of a second vulcanizing agent, 3-4 parts of a second accelerator, 1-3 parts of an acid absorber and 3-4 parts of a coloring agent;
the wear-resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 10-15 parts of nano silicon dioxide, 5-9 parts of coupling agent, 3-5 parts of second vulcanizing agent, 3-4 parts of second accelerator, 1-3 parts of acid absorber and 3-4 parts of coloring agent.
Specifically, immersing the hand mould in a coagulant aqueous solution for 40-50 s, and drying the filtrate at 50-60 ℃ to form a coagulant layer; then dipping the hand mould in the compact latex for 20-30 s, drying the filtrate at 65-75 ℃, dipping the hand mould in the compact latex again for 10-20 s, and drying the filtrate at 65-75 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20-30 s, and drying the filtrate at 65-75 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10-15 s, drying at 65-75 ℃, forming a wear-resistant layer on the surface of the palm, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
The hydrogenated nitrile rubber is a rubber obtained by hydrotreating nitrile rubber, has the original characteristics of nitrile rubber, has better chemical corrosion resistance, compression set resistance, wear resistance and the like, adopts incompletely saturated hydrogenated nitrile rubber, is easier to vulcanize, and is preferably hydrogenated nitrile rubber with the saturation of 94 percent, and unsaturated double bonds are reserved on the premise of ensuring the excellent performance of the hydrogenated nitrile rubber, so that the hydrogenated nitrile rubber is convenient to vulcanize.
The brominated butyl rubber is an isobutylene-isoprene copolymer elastomer containing active bromine, and has a main chain which is basically saturated with butyl rubber, so that the brominated butyl rubber can retain the original characteristics of butyl rubber, such as higher physical strength, low permeability, aging resistance and the like.
The glove prepared from the brominated butyl rubber has the advantages of good air tightness, strong permeability resistance, excellent compactness, difficult penetration of liquid into the glove, no damage to the hands of a user, and suitability for the chemical industry field. The brominated butyl rubber is applied to the compact layer, so that the hands of a user can be well protected, meanwhile, a small amount of hydrogenated nitrile rubber is doped in the compact layer, and the hydrogenated nitrile rubber has certain chemical corrosion resistance, so that the compact layer has good compactness and can endure certain acid-base corrosion. The compatibility of the brominated butyl rubber and the hydrogenated nitrile rubber can be increased by adding the modified asphalt into the compact layer, wherein the modified asphalt adopts the natural asphalt modified by the butyl rubber, and the specific preparation method is as follows: firstly, adding a small amount of natural asphalt into butyl rubber, then refining the butyl rubber to obtain a modified matrix, and then adding the modified matrix into a large amount of natural asphalt and stirring the mixture to obtain the butyl rubber modified natural asphalt.
In addition, zinc oxide or other auxiliary agents are also contained in the compact latex, hydrogen sulfide is generated in the process of sulfur vulcanization of the brominated butyl rubber, disulfide bonds in the rubber are broken, so that oxidation-reduction reaction is caused, 3-5 parts of zinc oxide is added to prevent the oxidation-reduction reaction, the zinc oxide can react with the hydrogen sulfide to produce zinc sulfide, oxidation-reduction is prevented, and the vulcanization can be smoothly carried out. The first accelerator is used for accelerating the vulcanization of the first vulcanizing agent, and the first accelerator is a thiazole accelerator NS commonly used in the market.
The compact layer is in the acid-alkali resistant layer and the wear-resistant layer, liquid can reach the compact layer only after passing through the acid-alkali resistant layer and the wear-resistant layer, and the compact layer is not as high in acid-alkali resistance as the acid-alkali resistant layer and the wear-resistant layer, but the compact layer is less in influence on the compact layer due to the fact that the liquid permeation amount at the compact layer is less, that is, the acid-alkali resistant layer and the wear-resistant layer can play a certain protection role on the compact layer.
Preferably, the first vulcanizing agent comprises sulfur and peroxide, and the peroxide vulcanizing agent is selected from 2, 4-dichloro benzoyl peroxide. The dispersing agent is sodium dinaphthyl methane disulfonate; the defoamer is phosphate mixed with 20wt% of silicone oil.
The fluororubber is a synthetic polymer elastomer containing fluorine atoms on carbon atoms of a main chain or a side chain, has high chemical stability, can resist corrosion of acid, alkali and some special chemicals, and is suitable for being applied to the chemical industry field. The fluororubber is applied to the acid-base resistant layer, so that the glove can be well protected from acid-base corrosion, meanwhile, the hydrogenated nitrile rubber is added to the acid-base resistant layer, the cost of raw materials can be controlled, and multiple tests prove that when the hydrogenated nitrile rubber is 60-80 parts and the fluororubber is 10-20 parts, the prepared glove has excellent acid-base resistance, and is favorable for application in acid-base occasions.
The acid absorber is used for neutralizing substances such as hydrogen fluoride and the like during vulcanization treatment of the fluororubber, and can also improve the crosslinking degree of the fluororubber.
The wear-resistant layer and the acid and alkali resistant layer have the same main components, nano silicon dioxide is added into the wear-resistant layer, the nano silicon dioxide is uniformly distributed in a network structure of hydrogenated nitrile rubber and fluororubber by adopting a coupling agent, the wear resistance of the glove surface is enhanced, and the coupling agent adopts a silane coupling agent KH450.
The components of the compact latex, the acid and alkali resistant latex and the wear resistant latex all contain hydrogenated nitrile rubber, when vulcanization treatment is carried out, the compact layer, the acid and alkali resistant layer and the wear resistant layer cannot be layered, the adjacent layers are mutually penetrated, no obvious limit exists, and the performance of the prepared glove is stable. The wear-resistant layer is in contact with the outside, the wear-resistant effect is directly achieved, the acid and alkali resistant layer can resist corrosion of acid and alkali materials, and the compact layer can prevent the acid and alkali materials from being immersed in the glove to corrode hands. From the aspects of acid and alkali resistance and compactness, the application performance of the glove is enhanced.
The colorants, which are also called colorants, are added according to specific requirements, and of course, the colors of the colorants in the acid-alkali-resistant latex and the wear-resistant latex can be consistent or inconsistent, so that the variety of glove styles is enriched, and the colorants are natural colorants such as laterite, realgar, cinnabar and the like, so that the glove is safer and more environment-friendly.
Preferably, the second vulcanizing agent is a cyclohexanediamine carbamate vulcanizing agent; the second accelerator is accelerator PX.
Preferably, the preparation steps of the compact latex are as follows: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the brominated butyl rubber raw rubber, mixing the plasticated hydrogenated nitrile rubber, the plasticated brominated butyl rubber and the modified asphalt, and adding a first accelerator, a first vulcanizing agent, a dispersing agent and a defoaming agent to prepare the compact latex.
Preferably, the preparation steps of the acid and alkali resistant latex are as follows: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, and adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the acid and alkali resistant latex.
Preferably, the preparation steps of the wear-resistant latex are as follows: firstly, mixing nano silicon dioxide and a coupling agent to obtain modified nano silicon dioxide; and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, adding modified nano silicon dioxide, and then adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the wear-resistant latex.
Preferably, the coagulant aqueous solution comprises the following components in parts by weight: 20-30 parts of calcium nitrate, 1-3 parts of ethoxylated alkyl alcohol, 2-6 parts of calcium stearate and 60-80 parts of water, and the preparation steps are as follows: and (3) dissolving calcium nitrate in water, then adding ethoxylated alkyl alcohol and calcium stearate, uniformly stirring, and filtering to obtain the coagulant aqueous solution.
Preferably, the coagulant aqueous solution comprises the following components in parts by weight: 20 parts of calcium nitrate, 1 part of ethoxylated alkyl alcohol, 3 parts of calcium stearate and 65 parts of water.
Preferably, the glove mold is dipped in a coagulant aqueous solution, a dense latex and an acid and alkali resistant latex in this order, and then dried, and then hemmed at the glove opening.
Preferably, the hand mould is pretreated before impregnation, and the steps are as follows: immersing the hand mould in an acidic solution for primary cleaning, drying, immersing in an alkaline solution for secondary cleaning, drying, immersing in an aqueous solution for tertiary cleaning, and drying.
The invention also provides an acid and alkali resistant glove which is prepared by the preparation method of the acid and alkali resistant glove.
The following are specific examples of the present invention, in which raw materials, equipment, etc. used are available in a purchase manner except for specific limitations.
Example 1
The preparation method of the acid and alkali resistant glove comprises the following steps: firstly, immersing a hand mould in a coagulant aqueous solution for 40s, and drying the filtrate at 50 ℃ to form a coagulant layer; then dipping the hand mould in compact latex for 20s, drying the filtrate at 70 ℃, dipping the hand mould in compact latex again for 15s, drying the filtrate at 70 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20s, and drying the filtrate at 70 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10s, drying at 70 ℃, forming a wear-resistant layer on the palm of the hand, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
The compact latex comprises the following components in parts by weight: 15 parts of hydrogenated nitrile rubber, 70 parts of brominated butyl rubber, 6 parts of modified asphalt, 5 parts of a first accelerator, 6 parts of a first vulcanizing agent, 1 part of a dispersing agent and 1 part of a defoaming agent.
The acid-base resistant latex comprises the following components in parts by weight: 70 parts of hydrogenated nitrile rubber, 15 parts of fluororubber, 3 parts of a second vulcanizing agent, 3 parts of a second accelerator, 2 parts of an acid absorber and 3 parts of a coloring agent.
The wear-resistant latex comprises the following components in parts by weight: 70 parts of hydrogenated nitrile rubber, 15 parts of fluororubber, 10 parts of nano silicon dioxide, 6 parts of coupling agent, 3 parts of second vulcanizing agent, 3 parts of second accelerator, 2 parts of acid absorber and 3 parts of coloring agent.
Example two
The preparation method of the acid and alkali resistant glove comprises the following steps: firstly, immersing a hand mould in a coagulant aqueous solution for 40s, and drying the filtrate at 50 ℃ to form a coagulant layer; then dipping the hand mould in compact latex for 25s, drying the filtrate at 70 ℃, dipping the hand mould in compact latex again for 10s, drying the filtrate at 70 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20s, and drying the filtrate at 70 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10s, drying at 70 ℃, forming a wear-resistant layer on the palm of the hand, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
The compact latex comprises the following components in parts by weight: 10 parts of hydrogenated nitrile rubber, 75 parts of brominated butyl rubber, 6 parts of modified asphalt, 6 parts of a first accelerator, 8 parts of a first vulcanizing agent, 1 part of a dispersing agent and 1 part of a defoaming agent.
The acid-base resistant latex comprises the following components in parts by weight: 65 parts of hydrogenated nitrile rubber, 20 parts of fluororubber, 3 parts of a second vulcanizing agent, 3 parts of a second accelerator, 2 parts of an acid absorber and 3 parts of a coloring agent.
The wear-resistant latex comprises the following components in parts by weight: 65 parts of hydrogenated nitrile rubber, 20 parts of fluororubber, 15 parts of nano silicon dioxide, 9 parts of coupling agent, 3 parts of second vulcanizing agent, 3 parts of second accelerator, 2 parts of acid absorber and 3 parts of coloring agent.
Example III
The preparation method of the acid and alkali resistant glove comprises the following steps: firstly, immersing a hand mould in a coagulant aqueous solution for 40s, and drying the filtrate at 50 ℃ to form a coagulant layer; then dipping the hand mould in compact latex for 25s, drying the filtrate at 70 ℃, dipping the hand mould in compact latex again for 10s, drying the filtrate at 70 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20s, and drying the filtrate at 70 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10s, drying at 70 ℃, forming a wear-resistant layer on the palm of the hand, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
The compact latex comprises the following components in parts by weight: 15 parts of hydrogenated nitrile rubber, 70 parts of brominated butyl rubber, 6 parts of modified asphalt, 5 parts of a first accelerator, 6 parts of a first vulcanizing agent, 1 part of a dispersing agent and 1 part of a defoaming agent.
The acid-base resistant latex comprises the following components in parts by weight: 70 parts of hydrogenated nitrile rubber, 15 parts of fluororubber, 3 parts of a second vulcanizing agent, 3 parts of a second accelerator, 2 parts of an acid absorber and 3 parts of a coloring agent.
The wear-resistant latex comprises the following components in parts by weight: 70 parts of hydrogenated nitrile rubber, 15 parts of fluororubber, 10 parts of nano silicon dioxide, 6 parts of coupling agent, 3 parts of second vulcanizing agent, 3 parts of second accelerator, 2 parts of acid absorber and 3 parts of coloring agent.
Comparative example 1
This comparative example differs from example 1 in that the compact latex does not contain brominated butyl rubber, and the hydrogenated nitrile rubber is 75 parts; the acid and alkali resistant latex and the wear resistant latex do not contain fluororubber and acid absorbent, and the hydrogenated nitrile rubber is 75 parts.
The gloves prepared in examples 1-3 and comparative example 1 were tested for non-leakage, abrasion, tear and permeation resistance according to the AQ6102-2007 standard, and the performance test results are shown in table 1.
As shown in the table above, compared with the common nitrile rubber glove, the glove prepared by the invention has good acid and alkali resistance, wear resistance and tear resistance, and is more suitable for the chemical industry field.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The preparation method of the acid and alkali resistant glove is characterized by comprising the following preparation steps: sequentially dipping a hand die in a coagulant aqueous solution, compact latex and acid and alkali resistant latex, drying after each dipping, spraying the wear resistant latex on one side of the palm of the acid and alkali resistant glove, drying, and sequentially vulcanizing, drying, cooling and demolding to obtain the acid and alkali resistant glove;
the compact latex comprises the following components in parts by weight: 10-20 parts of hydrogenated nitrile rubber, 60-80 parts of brominated butyl rubber, 6-8 parts of modified asphalt, 5-10 parts of a first accelerator, 6-12 parts of a first vulcanizing agent, 1-3 parts of a dispersing agent and 1-3 parts of a defoaming agent;
the acid and alkali resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 3-5 parts of a second vulcanizing agent, 3-4 parts of a second accelerator, 1-3 parts of an acid absorber and 3-4 parts of a coloring agent;
the wear-resistant latex comprises the following components in parts by weight: 60-80 parts of hydrogenated nitrile rubber, 10-20 parts of fluororubber, 10-15 parts of nano silicon dioxide, 5-9 parts of coupling agent, 3-5 parts of second vulcanizing agent, 3-4 parts of second accelerator, 1-3 parts of acid absorber and 3-4 parts of coloring agent.
2. The method for preparing the acid and alkali resistant glove according to claim 1, wherein the hand mould is immersed in a coagulant aqueous solution for 40-50 s, and the filtrate is dried at 50-60 ℃ to form a coagulant layer; then dipping the hand mould in the compact latex for 20-30 s, drying the filtrate at 65-75 ℃, dipping the hand mould in the compact latex again for 10-20 s, and drying the filtrate at 65-75 ℃ to form a compact layer; then dipping the hand mould in acid and alkali resistant latex for 20-30 s, and drying the filtrate at 65-75 ℃ to form an acid and alkali resistant layer; finally, spraying wear-resistant latex on one side of the palm of the acid and alkali resistant glove for 10-15 s, drying at 65-75 ℃, forming a wear-resistant layer on the surface of the palm, and then sequentially carrying out vulcanization, drying, cooling and demolding treatment to obtain the acid and alkali resistant glove.
3. The method for preparing acid and alkali resistant glove according to claim 1, wherein the step of preparing the compact latex comprises the steps of: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the brominated butyl rubber raw rubber, mixing the plasticated hydrogenated nitrile rubber, the plasticated brominated butyl rubber and the modified asphalt, and adding a first accelerator, a first vulcanizing agent, a dispersing agent and a defoaming agent to prepare the compact latex.
4. The method for preparing the acid and alkali resistant glove according to claim 1, wherein the step of preparing the acid and alkali resistant latex is as follows: and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, and adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the acid and alkali resistant latex.
5. The method for preparing the acid and alkali resistant glove according to claim 1, wherein the step of preparing the wear resistant latex is as follows: firstly, mixing nano silicon dioxide and a coupling agent to obtain modified nano silicon dioxide; and respectively plasticating the hydrogenated nitrile rubber raw rubber and the fluororubber raw rubber, mixing the plasticated hydrogenated nitrile rubber and the plasticated fluororubber, adding modified nano silicon dioxide, and then adding a second vulcanizing agent, a second accelerator, an acid absorber and a coloring agent to prepare the wear-resistant latex.
6. The method for preparing the acid and alkali resistant glove according to claim 1, wherein the coagulant aqueous solution comprises the following components in parts by weight: 20-30 parts of calcium nitrate, 1-3 parts of ethoxylated alkyl alcohol, 2-6 parts of calcium stearate and 60-80 parts of water, and the preparation steps are as follows: and (3) dissolving calcium nitrate in water, then adding ethoxylated alkyl alcohol and calcium stearate, uniformly stirring, and filtering to obtain the coagulant aqueous solution.
7. The method for producing an acid and alkali resistant glove according to claim 1, wherein the glove mold is baked after dipping in the coagulant aqueous solution, the dense latex and the acid and alkali resistant latex in this order, and the glove is hemmed at the opening.
8. The method for preparing the acid and alkali resistant glove according to claim 1, wherein the hand model is pretreated before dipping, and the steps are as follows: immersing the hand mould in an acidic solution for primary cleaning, drying, immersing in an alkaline solution for secondary cleaning, drying, immersing in an aqueous solution for tertiary cleaning, and drying.
9. The method for producing an acid and alkali resistant glove according to claim 1, wherein the first vulcanizing agent comprises sulfur and peroxide.
10. An acid and alkali resistant glove, characterized in that the glove is prepared by the method for preparing the acid and alkali resistant glove according to any one of claims 1-9.
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| CN202311522126.0A CN117229556A (en) | 2023-11-15 | 2023-11-15 | Acid and alkali resistant glove and preparation method thereof |
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- 2023-11-15 CN CN202311522126.0A patent/CN117229556A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 柴春鹏 等: "《高分子合成材料学》", vol. 1, 北京理工大学出版社, pages: 178 - 166 * |
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