CN115679707B - Preparation method of protective clothing fabric - Google Patents
Preparation method of protective clothing fabric Download PDFInfo
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- CN115679707B CN115679707B CN202110853204.XA CN202110853204A CN115679707B CN 115679707 B CN115679707 B CN 115679707B CN 202110853204 A CN202110853204 A CN 202110853204A CN 115679707 B CN115679707 B CN 115679707B
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- chlorosulfonated polyethylene
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- protective clothing
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- 239000004744 fabric Substances 0.000 title claims abstract description 68
- 230000001681 protective effect Effects 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 109
- 229920002681 hypalon Polymers 0.000 claims abstract description 39
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 238000004073 vulcanization Methods 0.000 claims abstract description 19
- 229920006284 nylon film Polymers 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 53
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 32
- 239000002002 slurry Substances 0.000 claims description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 21
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 235000021355 Stearic acid Nutrition 0.000 claims description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 18
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 18
- 239000008117 stearic acid Substances 0.000 claims description 18
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 16
- 229920000715 Mucilage Polymers 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 12
- 239000000395 magnesium oxide Substances 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000010445 mica Substances 0.000 claims description 12
- 229910052618 mica group Inorganic materials 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 12
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 10
- CPGFMWPQXUXQRX-UHFFFAOYSA-N 3-amino-3-(4-fluorophenyl)propanoic acid Chemical compound OC(=O)CC(N)C1=CC=C(F)C=C1 CPGFMWPQXUXQRX-UHFFFAOYSA-N 0.000 claims description 8
- 229960002447 thiram Drugs 0.000 claims description 8
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 7
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 claims description 6
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 6
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 6
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 45
- 239000000126 substance Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 9
- 229920001973 fluoroelastomer Polymers 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 4
- 239000002671 adjuvant Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 3
- 231100000481 chemical toxicant Toxicity 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- -1 nitrile compound Chemical class 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000003440 toxic substance Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000007705 chemical test Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003317 industrial substance Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HLDKTASHQOGTII-UHFFFAOYSA-N acetonitrile;methanedithione Chemical compound CC#N.S=C=S HLDKTASHQOGTII-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 238000013098 chemical test method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011268 mixed slurry Substances 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
- 238000011056 performance test Methods 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a preparation method of a protective clothing fabric, which sequentially comprises the working procedures of plasticating, mixing, breaking mixed rubber, preparing rubber cement, coating, vulcanizing and attaching, wherein the mixed rubber, the nitrile rubber and the chlorosulfonated polyethylene rubber are mixed according to respective corresponding formulas in the mixing process, repeated coating operation is carried out for a plurality of times after the preparation of the rubber cement is finished, the semi-finished rubber fabric is obtained after vulcanization, and finally the semi-finished rubber fabric is attached to a nylon film with the thickness of 0.05mm to finish the preparation of the finished fabric. The protective clothing fabric prepared by the invention has broad-spectrum protective effect and wider market application prospect.
Description
Technical Field
The invention relates to the field of chemical protection, in particular to a preparation method of protective clothing fabric with reliable protection capability under the environment polluted by multiple chemicals.
Background
With the increasing development of economic activities in China, the chemical industry is used as an important economic support in China, the production, transportation, storage and use of dangerous chemicals are more and more frequent, and the chemical protective clothing is very large in demand in the fields of social production and labor protection. In addition to the demands of the production links for chemical protective clothing, the demands of national forces such as military, fire protection, public security, etc. for maintaining social order safety and stability have also been increasing in recent years.
Patent 202010390276.0 filed by the company in 2020 discloses a preparation method of protective clothing fabric, which can effectively protect 6 common toxic chemical substances such as dimethyl sulfate, ammonia, chlorine, phosgene, hydrogen chloride, hydrocyanic acid and the like, and meets the protection requirement of GA770-2008 fire fighter chemical protective clothing.
However, the protective level is low, the protective effect is not broad-spectrum, and particularly the protective performance on substances such as acetone, carbon disulfide, methylene dichloride, diethylamine, ethyl acetate and the like is poor, for example: the average permeation time of acetone is only 22min, and the average permeation time of methylene dichloride is even only 10 min.
In addition, the "coating" process of the prior application (application number 202010390276.0) is relatively complicated, and in order to obtain the ideal protective effect, more than 8 layers of rubber compound slurry layers need to be repeatedly coated on the base fabric, and each layer of rubber compound slurry layer needs to be independently heated and dried in an oven, so that the production efficiency is greatly affected.
Disclosure of Invention
The invention provides a preparation method of protective clothing fabric, which aims to solve the problem of narrow application field in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the preparation method of the protective clothing fabric comprises the following steps:
a. Plasticating, namely plasticating chloroprene rubber, nitrile rubber and chlorosulfonated polyethylene rubber respectively;
b. mixing, namely mixing the rubber after plasticating, wherein: zinc oxide, magnesium oxide, mica powder, white carbon black, stearic acid, zinc borate, antimonous oxide, rosin, coumarone resin and ethylene thiourea are added into the plasticated chloroprene rubber to be mixed and prepared into neoprene rubber compound. The mass parts of the components are as follows: 100 parts of neoprene, 4-6 parts of zinc oxide, 4-6 parts of magnesium oxide, 20-30 parts of mica powder, 10-20 parts of white carbon black, 0.5-1.5 parts of stearic acid, 30-50 parts of zinc borate, 30-50 parts of antimony trioxide, 1-3 parts of rosin, 4-8 parts of coumarone resin and 0.3-1 part of ethylene thiourea;
Zinc oxide, stearic acid, clay, tetramethylthiuram disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and sulfur are added into the plasticated nitrile rubber to be mixed and prepare nitrile rubber compound, and the weight parts of the nitrile rubber compound are as follows: 100 parts of nitrile rubber, 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 48-55 parts of clay, 0.3-1 part of tetramethylthiuram disulfide, 0.8-2 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1-2 parts of sulfur;
Magnesium oxide, stearic acid, mica powder, white carbon black, dipentamethylenethiuram tetrasulfide, pentaerythritol and zinc borate are added into the plasticated chlorosulfonated polyethylene rubber to be mixed and prepared into chlorosulfonated polyethylene rubber compound, and the weight parts of the chlorosulfonated polyethylene rubber compound are as follows: 100 parts of chlorosulfonated polyethylene rubber, 4-6 parts of magnesium oxide, 0.8-2 parts of stearic acid, 18-22 parts of mica powder, 8-20 parts of white carbon black, 1-2 parts of dipentamethylenethiuram tetrasulfide, 3-5 parts of pentaerythritol and 28-35 parts of zinc borate;
c. Crushing the rubber compound, and respectively cutting the mixed chlorine Ding Hun rubber compound, the nitrile rubber compound and the chlorosulfonated polyethylene rubber compound into particles with the particle size less than or equal to 5 cm;
d. preparing mucilage, namely respectively dissolving the crushed particles into an organic solvent, wherein: the neoprene mixed rubber is dissolved in toluene according to the weight part ratio of 1.5:1 to prepare neoprene mixed rubber slurry;
The nitrile rubber compound is dissolved in acetone according to the weight part ratio of 1.5:1 to prepare nitrile rubber compound slurry;
dissolving chlorosulfonated polyethylene mixed rubber into toluene according to the weight part ratio of 1:1 to prepare chlorosulfonated polyethylene mixed rubber slurry;
e. coating, namely respectively coating at least one layer of each mucilage on the front surface of the base cloth, and respectively heating and drying each layer of each coating to prepare a composite layer blank;
f. vulcanizing, namely placing the composite layer blank into an environment with the temperature of 150-180 ℃ and the vulcanizing pressure of 40-60kg/cm 2 for vulcanization reaction for 3-5min to obtain semi-finished fabric;
g. and (3) attaching, namely attaching the nylon film to the back surface of the base cloth, and finally preparing the finished fabric.
In a recommended embodiment, in step b:
the neoprene and the complexing agent are respectively prepared from the following components in parts by weight: 100 parts of neoprene, 4 parts of zinc oxide, 5 parts of magnesium oxide, 20 parts of mica powder, 10 parts of white carbon black, 0.5 part of stearic acid, 40 parts of zinc borate, 40 parts of antimonous oxide, 1 part of rosin, 5 parts of coumarone resin and 0.5 part of ethylene thiourea;
The nitrile rubber and the compounding agent are respectively as follows: 100 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of stearic acid, 50 parts of clay, 0.5 part of tetramethylthiuram disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur;
The chlorosulfonated polyethylene rubber and the compounding agent are respectively prepared from the following components in parts by weight: 100 parts of chlorosulfonated polyethylene rubber, 5 parts of magnesium oxide, 1 part of stearic acid, 20 parts of mica powder, 10 parts of white carbon black, 1.5 parts of dipentamethylenethiuram tetrasulfide, 3 parts of pentaerythritol and 30 parts of zinc borate.
In a recommended embodiment, in the step e, the front surface of the base fabric is coated with a layer of neoprene rubber compound, two layers of butyronitrile rubber compound and a layer of chlorosulfonated polyethylene rubber compound from inside to outside in sequence.
In a preferred embodiment, each of the above layers of cement is applied to a thickness of 0.02mm.
In the recommended embodiment, the neoprene compound slurry is added with a bridging agent in a weight ratio of 5:1 to the neoprene compound slurry before coating.
In the recommended embodiment, before the step f, the rubber release agent is sprayed on the front side and the back side of the composite layer blank prepared in the step e.
In a preferred embodiment, in step f, the temperature of vulcanization is 170℃and the vulcanization pressure is 50kg/cm2 for 3 to 5 minutes.
In a preferred embodiment, the base fabric is a polyester fiber.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the protective clothing is prepared by taking chloroprene rubber, nitrile rubber and chlorosulfonated polyethylene rubber as main raw materials, mixing according to a corresponding formula, preparing corresponding adhesive cement, coating the adhesive cement on the front surface of base cloth layer by layer, attaching a nylon film on the back surface of the base cloth, and finally preparing the finished fabric. The protective agent has a broad-spectrum protective effect, can truly adapt to various complex chemical pollution environments, and has wider market application prospects.
2. According to the invention, only about 4 rubber compound slurry layers are required to be coated in the coating process, so that the process is simpler, and the production efficiency is greatly improved.
Detailed Description
The invention will be further understood by reference to the following examples which are given to illustrate the invention but are not intended to limit the scope of the invention.
PREFERRED EMBODIMENTS
The preparation method of the protective clothing fabric comprises the following steps:
1. Plasticating, namely plasticating chloroprene rubber, nitrile rubber and chlorosulfonated polyethylene rubber respectively, so that raw rubber is changed into a plastic substance from an elastomer, and meanwhile, the plasticity of the raw rubber is uniform, so that preparation can be made for subsequent mixing. The plasticating temperature is generally 40-70 ℃ and the time is 10-20min.
2. Mixing, namely mixing chloroprene rubber, nitrile rubber and chlorosulfonated polyethylene rubber according to the formula requirement. The purpose is to make the raw rubber supplemented with various auxiliary agents, and make the physicochemical properties of the rubber compound meet the design requirements, and the production process conditions of the rubber compound are met, so that the rubber compound is convenient to produce. Such as reinforcing agents to increase strength, plasticizers to increase flow compliance with hardness, special adjuvants to increase resistivity, flame retardant rates, other adjuvants to provide good manufacturing techniques, etc. The specific formula is as follows:
neoprene formulation (parts by mass):
nitrile rubber formula (mass portion)
The chlorosulfonated polyethylene rubber formula (mass parts):
remarks: TMTD tetramethylthiuram disulfide
CZ N-cyclohexyl-2-benzothiazole sulfenamide
DPTT dipentamethylenethiuram tetrasulfide
3. Crushing the rubber compound, and cutting the mixed chlorine Ding Hun rubber compound, the nitrile rubber compound and the chlorosulfonated polyethylene rubber compound into particles with the particle size of less than 5 cm. The main purpose is to facilitate dissolution and stirring and accelerate dissolution.
4. Preparing mucilage, namely respectively dissolving the crushed particles into respective organic solvents, wherein: the neoprene mixed rubber is dissolved in toluene according to the weight part ratio of 1.5:1 to prepare neoprene mixed rubber slurry; the nitrile rubber compound is dissolved in acetone according to the weight part ratio of 1.5:1 to prepare nitrile rubber compound slurry; dissolving chlorosulfonated polyethylene mixed rubber into toluene according to the weight part ratio of 1:1 to prepare chlorosulfonated polyethylene mixed rubber slurry;
5. Filtering, namely filtering undissolved particles and impurities in various mucilage of the step 4 respectively, wherein the main purpose of filtering is to unify and uniformly obtain the mucilage, and ensure that the mucilage meets the requirements of coating (coating).
6. And adding a bridging agent into the neoprene adhesive cement in a weight ratio of 5:1, and uniformly stirring. Compounding with coumarone added during the mixing process. The combination of the two leads the peeling strength of the interface of the base cloth and the rubber to be up to 1.8KN/m, the index of the 'GA 770-2008 fireman chemical protective clothing' is 0.78KN/m, and the test result is that the index is worth more than 2 times. If the bridging agent is completely sprayed, the high peeling strength can be obtained, but the cost is very high due to the high price of the bridging agent.
7. And (3) coating, namely coating a layer of neoprene rubber paste, two layers of butyronitrile rubber paste and a layer of chlorosulfonated polyethylene rubber paste on the front surface of the base cloth (the polyester fiber with the thickness of 0.22mm is adopted in the embodiment) from inside to outside.
Specific:
① The neoprene adhesive cement is coated on the front surface of the base cloth once, and the oven is heated continuously in a step-type manner and dried. Ensure that the solvent in the mucilage volatilizes as much as possible.
② The nitrile rubber compound slurry is coated twice, heated and dried. And the adhesive tape is cooled by a cooling roller after coming out of the drying tunnel, so that the adhesive tape is prevented from sticking to the roller.
③ The surface layer is coated with chlorosulfonated polyethylene rubber once.
In this embodiment, the thickness of each cement layer is 0.02mm, and the coating process is performed in a coating device, and each layer is heated and dried in a continuous oven at a temperature of 100 ℃ for 12min. Thus, a composite layer blank is obtained. It should be noted that the coating thickness of the coating device is generally 0.02mm each time, and the thickness of each time is not preferably more than 0.03 mm, otherwise, the flowing and uneven thickness of the adhesive cement are easily caused.
8. And (3) spraying a rubber release agent, and spraying the rubber release agent on the prepared composite layer blank. Preventing adhesion between rubber and rubber.
9. The vulcanizing of the composite layer blank adopts a drum vulcanizing machine, the rubber surface is directly contacted with a stainless steel belt and a vulcanizing roller, the surface of the vulcanized rubberized fabric has soft and sanitary hand feeling, and the dirty, messy and bad images of rubberized fabric products produced by talcum powder pot-type vulcanizing are thoroughly eliminated. The specific process is as follows:
① Cleaning vulcanizing roller and steel belt of vulcanizing machine.
② Setting vulcanization parameters, wherein the vulcanization time is 3-5min, the vulcanization temperature is 170 ℃, and the vulcanization pressure is 50kg/cm 2. Waiting for the equipment to reach the vulcanization condition of the product.
③ And (5) feeding the composite layer blank into a vulcanizing machine flatly. The composite layer blank is contacted with the vulcanizing roller and the steel belt, and a fluorine release agent is adopted to prevent the rubber from sticking to the roller and the steel belt.
④ After the vulcanization is completed, a piece of semi-finished fabric with neat appearance, uniform texture and good compactness is obtained.
10. And (3) attaching, namely attaching a nylon film with the thickness of 0.05mm to the back surface of the semi-finished fabric (the back surface of the base fabric), and finally preparing the finished fabric (the protective clothing fabric).
The protective clothing fabric of the implementation can be produced by combining the steps, and the protective clothing fabric has 4 layers of rubber layers and a nylon film on the front side and the back side except the base fabric, and has the thickness of only about 0.2mm and the weight of about 400g/m 2 per unit area. The following table is obtained for the chemical test of this product:
Table 1 shows the comparison of the detection results and standard values of various chemical permeation performances of the fabric finished product of the preferred embodiment
From table 1, it can be seen that the protective clothing fabric not only can effectively protect 6 common toxic chemicals such as dimethyl sulfate, ammonia, chlorine, phosgene, hydrogen chloride, hydrocyanic acid and the like, but also has good protective effect on 12 industrial chemicals such as acetone, acetonitrile carbon disulfide and the like, so that the protective clothing fabric prepared by the preparation method disclosed by the invention has a broad-spectrum protective effect and a wider market application prospect.
Comparative example one
The main difference between the process of the first preferred embodiment and the process of the first preferred embodiment is that the nylon film on the back of the base cloth is replaced by a rubber layer which is the same as the front of the base cloth, specifically, in the coating process, after the front of the base cloth is coated, the back of the base cloth is coated with a plurality of layers of mixed rubber layers which are the same as the front of the base cloth from the inner layer to the outer layer by adopting the same coating process, and finally the finished fabric is prepared.
The following table is obtained through chemical testing of the comparative example one protective garment:
table 2 shows the results of the chemical permeation performance tests and the standard values of the fabric of the finished product of the comparative example
As can be seen from Table 2, the fabric finished product prepared in comparative example I can effectively protect various common toxic chemicals such as ammonia, chlorine, phosgene, hydrogen chloride and the like, but has an unsatisfactory protective effect on industrial chemicals such as acetone, acetonitrile, carbon disulfide and the like.
The process of the second comparative example is basically the same as that of the preferred example, and the main difference is that in the second comparative example, rubber in patent number 202010390276.0 "a method for producing protective clothing fabric" filed in 2020 is adopted. The method comprises the following steps:
1. plasticating, namely plasticating fluororubber, nitrile rubber, butyl rubber and chlorosulfonated polyethylene rubber respectively, so that raw rubber is changed into a plastic substance from an elastomer, and meanwhile, the plastic property of the raw rubber is uniform, so that preparation can be made for subsequent mixing. The plasticating temperature is generally 40-70 ℃ and the time is 10-20min.
2. Mixing, namely mixing fluororubber, nitrile rubber and chlorosulfonated polyethylene rubber according to the formula requirement. The purpose is to make the raw rubber supplemented with various auxiliary agents, and make the physicochemical properties of the rubber compound meet the design requirements, and the production process conditions of the rubber compound are met, so that the rubber compound is convenient to produce. Such as reinforcing agents to increase strength, plasticizers to increase flow compliance with hardness, special adjuvants to increase resistivity, flame retardant rates, other adjuvants to provide good manufacturing techniques, etc. The specific formula is as follows:
fluororubber formula (mass portion)
Remarks: TMTD tetramethylthiuram disulfide
CZ: n-cyclohexyl-2-benzothiazole sulfenamides
DM: 2. 2' -dithiodibenzothiazyl
DPTT: dipentamethylenethiuram tetrasulfide
3. And crushing the rubber compound, and cutting the mixed fluororubber compound, the nitrile compound, the butyl compound and the chlorosulfonated polyethylene compound into particles with the particle size of less than 5 cm. The main purpose is to facilitate dissolution and stirring and accelerate dissolution.
4. Preparing mucilage, namely respectively dissolving the crushed particles into respective organic solvents, wherein: the fluororubber compound is dissolved in acetone according to the weight part ratio of 1.2:1 to prepare acetone compound rubber slurry;
The nitrile rubber compound is dissolved in acetone according to the weight part ratio of 1.5:1 to prepare nitrile rubber compound slurry;
the butyl rubber compound is dissolved in solvent gasoline according to the weight part ratio of 0.9:1 to prepare butyl rubber compound slurry;
dissolving chlorosulfonated polyethylene mixed rubber into toluene according to the weight part ratio of 1:1 to prepare chlorosulfonated polyethylene mixed rubber slurry;
5. Filtering, namely filtering undissolved particles and impurities in various mucilage of the step 4 respectively, wherein the main purpose of filtering is to unify and uniformly obtain the mucilage, and ensure that the mucilage meets the requirements of coating (coating).
6. And adding a bridging agent into the fluororubber mixing cement according to the weight ratio of 5:1, and uniformly stirring. Compounding with coumarone added during the mixing process. The combination of the two leads the peeling strength of the interface of the base cloth and the rubber to be up to 2.3KN/m, the index of the 'GA 770-2008 fireman chemical protective clothing' is 0.78 KN/m, and the test result is three times the index. If the bridging agent is completely sprayed, the high peeling strength can be obtained, but the cost is very high due to the high price of the bridging agent.
7. Coating, namely coating a layer of fluororubber mixing rubber slurry, two layers of butyronitrile mixing rubber slurry, two layers of butyl mixing rubber slurry and two layers of chlorosulfonated polyethylene mixing rubber slurry on the front surface of a base cloth (the embodiment adopts polyester fibers with the thickness of 0.2 mm) from inside to outside;
Specifically, the method comprises the following steps;
① The fluorine rubber mixed slurry is coated on the front surface of the base cloth once, and the oven is heated continuously in a step-type manner and dried. Ensure that the solvent in the mucilage volatilizes as much as possible.
② The nitrile rubber compound slurry is used for coating twice. The oven adopts continuous stepwise heating, heating and drying. Ensure that the solvent in the mucilage volatilizes as much as possible.
③ The butyl rubber paste is coated twice, heated and dried. And the adhesive tape is cooled by a cooling roller after coming out of the drying tunnel, so that the adhesive tape is prevented from sticking to the roller.
④ The surface layer is coated with chlorosulfonated polyethylene rubber twice.
In this embodiment, the thickness of each cement layer is 0.02mm, and the coating process is performed in a coating device, and each layer is heated and dried in a continuous oven at a temperature of 100 ℃ for 12min. Thus, a composite layer blank is obtained. It should be noted that the coating thickness of the coating device is generally between 0.01 and 0.02mm during the coating process, and the coating thickness of each coating device should not exceed 0.02mm, otherwise, the flowing and uneven thickness of the adhesive cement are easily caused.
8. And (3) spraying a rubber release agent, and spraying the rubber release agent on the prepared composite layer blank. Preventing adhesion between rubber and rubber.
9. The vulcanizing of the composite layer blank adopts a drum vulcanizing machine, the rubber surface is directly contacted with a stainless steel belt and a vulcanizing roller, the surface of the vulcanized rubberized fabric has soft and sanitary hand feeling, and the dirty, messy and bad images of rubberized fabric products produced by talcum powder pot-type vulcanizing are thoroughly eliminated. The specific process is as follows:
① Cleaning vulcanizing roller and steel belt of vulcanizing machine.
② Setting vulcanization parameters, wherein the vulcanization time is 3-5min, the vulcanization temperature is 170 ℃, and the vulcanization pressure is 50kg/cm < 2 >. Waiting for the equipment to reach the vulcanization condition of the product.
③ And (5) feeding the composite layer blank into a vulcanizing machine flatly. The composite layer blank is contacted with the vulcanizing roller and the steel belt, and a fluorine release agent is adopted to prevent the rubber from sticking to the roller and the steel belt.
④ After the vulcanization is completed, a piece of chemical-proof adhesive tape with clean appearance, uniform texture and good compactness is obtained.
10. And (3) attaching the vulcanized rubber fabric to a nylon membrane, wherein the front surface is a rubber layer, and the back surface is a nylon membrane.
The chemical test of the protective clothing fabric prepared in the second comparative example gave table 3:
the protective clothing fabric prepared in the second comparative example is basically equivalent to the protective clothing fabric prepared in the preferred embodiment in terms of protective performance, and also has a broad-spectrum protective effect.
However, the second comparative example has more types of rubber, more coating times of rubber, relatively complex process and relatively low efficiency.
The present invention has been described in detail with reference to the embodiments, but the description is only the preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention should be considered as falling within the scope of the present invention.
Claims (7)
1. The preparation method of the protective clothing fabric is characterized by comprising the following steps of:
a. Plasticating, namely plasticating chloroprene rubber, nitrile rubber and chlorosulfonated polyethylene rubber respectively;
b. Mixing, namely mixing the rubber after plasticating, wherein: zinc oxide, magnesium oxide, mica powder, white carbon black, stearic acid, zinc borate, antimonous oxide, rosin, coumarone resin and ethylene thiourea are added into the plasticated chloroprene rubber to be mixed and prepared into neoprene mixed rubber, and the neoprene mixed rubber comprises the following components in parts by weight: 100 parts of neoprene, 4-6 parts of zinc oxide, 4-6 parts of magnesium oxide, 20-30 parts of mica powder, 10-20 parts of white carbon black, 0.5-1.5 parts of stearic acid, 30-50 parts of zinc borate, 30-50 parts of antimony trioxide, 1-3 parts of rosin, 4-8 parts of coumarone resin and 0.3-1 part of ethylene thiourea;
Zinc oxide, stearic acid, clay, tetramethylthiuram disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and sulfur are added into the plasticated nitrile rubber to be mixed and prepare nitrile rubber compound, and the weight parts of the nitrile rubber compound are as follows: 100 parts of nitrile rubber, 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 48-55 parts of clay, 0.3-1 part of tetramethylthiuram disulfide, 0.8-2 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1-2 parts of sulfur;
Magnesium oxide, stearic acid, mica powder, white carbon black, dipentamethylenethiuram tetrasulfide, pentaerythritol and zinc borate are added into the plasticated chlorosulfonated polyethylene rubber to be mixed and prepared into chlorosulfonated polyethylene rubber compound, and the weight parts of the chlorosulfonated polyethylene rubber compound are as follows: 100 parts of chlorosulfonated polyethylene rubber, 4-6 parts of magnesium oxide, 0.8-2 parts of stearic acid, 18-22 parts of mica powder, 8-20 parts of white carbon black, 1-2 parts of dipentamethylenethiuram tetrasulfide, 3-5 parts of pentaerythritol and 28-35 parts of zinc borate;
c. Crushing the rubber compound, and respectively cutting the mixed chlorine Ding Hun rubber compound, the nitrile rubber compound and the chlorosulfonated polyethylene rubber compound into particles with the particle size less than or equal to 5 cm;
d. Preparing mucilage, namely respectively dissolving the crushed particles into an organic solvent, wherein:
the neoprene mixed rubber is dissolved in toluene according to the weight part ratio of 1.5:1 to prepare neoprene mixed rubber slurry;
the nitrile rubber compound is dissolved in acetone according to the weight part ratio of 1.5:1 to prepare nitrile rubber compound slurry;
dissolving chlorosulfonated polyethylene mixed rubber into toluene according to the weight part ratio of 1:1 to prepare chlorosulfonated polyethylene mixed rubber slurry;
e. Coating, namely sequentially coating a layer of neoprene rubber paste, two layers of butyronitrile rubber paste and a layer of chlorosulfonated polyethylene rubber paste on the front surface of the base cloth from inside to outside;
f. vulcanizing, namely placing the composite layer blank into an environment with the temperature of 150-180 ℃ and the vulcanizing pressure of 40-60kg/cm 2 for vulcanization reaction for 3-5min to obtain semi-finished fabric;
g. and (3) attaching, namely attaching the nylon film to the back surface of the base cloth, and finally preparing the finished fabric.
2. The method for preparing the protective clothing fabric according to claim 1, wherein: in the step b, the parts by weight of the chloroprene rubber and the complexing agent are respectively as follows: 100 parts of neoprene, 4 parts of zinc oxide, 5 parts of magnesium oxide, 20 parts of mica powder, 10 parts of white carbon black, 0.5 part of stearic acid, 40 parts of zinc borate, 40 parts of antimonous oxide, 1 part of rosin, 5 parts of coumarone resin and 0.5 part of ethylene thiourea;
the nitrile rubber and the compounding agent are respectively as follows: 100 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of stearic acid, 50 parts of clay, 0.5 part of tetramethylthiuram disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur;
The chlorosulfonated polyethylene rubber and the compounding agent are respectively prepared from the following components in parts by weight: 100 parts of chlorosulfonated polyethylene rubber, 5 parts of magnesium oxide, 1 part of stearic acid, 20 parts of mica powder, 10 parts of white carbon black, 1.5 parts of dipentamethylenethiuram tetrasulfide, 3 parts of pentaerythritol and 30 parts of zinc borate.
3. The method for preparing the protective clothing fabric according to claim 1, wherein: the coating thickness of each layer of mucilage is 0.02mm.
4. The method for producing protective clothing fabric according to claim 3, wherein: before the neoprene compound slurry is coated, a bridging agent is added into the neoprene compound slurry according to the weight ratio of 5:1.
5. The method for producing a protective clothing fabric according to any one of claims 1 to 4, characterized in that: before the step f, the front surface of the composite layer blank prepared in the step e is sprayed with a rubber release agent.
6. The method for preparing the protective clothing fabric according to claim 1, wherein: in step f, the vulcanization temperature is 170 ℃, and the vulcanization pressure is 50kg/cm 2, and the duration is 3-5 min.
7. The method for preparing the protective clothing fabric according to claim 1, wherein: the base fabric is polyester fiber.
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| CN109397816A (en) * | 2018-10-24 | 2019-03-01 | 山西新华化工有限责任公司 | Overlay film protective rubber cloth material |
| TWM583376U (en) * | 2016-01-08 | 2019-09-11 | 厚生股份有限公司 | Weather-resistant and fire-retardant composite structure |
| CN212270512U (en) * | 2020-05-08 | 2021-01-01 | 浙江赛飞普诺科技发展有限公司 | Protective clothing fabric |
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| US4943475A (en) * | 1986-07-23 | 1990-07-24 | Membrane Technology & Research, Inc. | Multilayer composite protective fabric material and use in protective clothing |
| CN102605628A (en) * | 2012-02-28 | 2012-07-25 | 陕西理工学院 | Fabric for individual protective clothing and preparation method of fabric |
| CN104877244A (en) * | 2015-06-10 | 2015-09-02 | 深圳市佳宝金有限公司 | Compound rubber protective belt for bridge, preparation method and application thereof |
| TWM583376U (en) * | 2016-01-08 | 2019-09-11 | 厚生股份有限公司 | Weather-resistant and fire-retardant composite structure |
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| CN212270512U (en) * | 2020-05-08 | 2021-01-01 | 浙江赛飞普诺科技发展有限公司 | Protective clothing fabric |
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