CN117820739B - Wear-resistant ozone-resistant railway vibration reduction rubber backing plate and preparation method and application thereof - Google Patents
Wear-resistant ozone-resistant railway vibration reduction rubber backing plate and preparation method and application thereof Download PDFInfo
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- CN117820739B CN117820739B CN202410244783.1A CN202410244783A CN117820739B CN 117820739 B CN117820739 B CN 117820739B CN 202410244783 A CN202410244783 A CN 202410244783A CN 117820739 B CN117820739 B CN 117820739B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 88
- 239000005060 rubber Substances 0.000 title claims abstract description 88
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 230000009467 reduction Effects 0.000 title description 8
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 55
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000004073 vulcanization Methods 0.000 claims abstract description 34
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 30
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000013016 damping Methods 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 21
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 20
- ODUCDPQEXGNKDN-UHFFFAOYSA-N nitroxyl Chemical compound O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000001737 promoting effect Effects 0.000 claims abstract description 18
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims abstract description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 17
- 239000011593 sulfur Substances 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 11
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 21
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 239000005995 Aluminium silicate Substances 0.000 claims description 17
- 235000012211 aluminium silicate Nutrition 0.000 claims description 17
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 17
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 17
- 229960002447 thiram Drugs 0.000 claims description 17
- 239000002174 Styrene-butadiene Substances 0.000 claims description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 12
- 229910021389 graphene Inorganic materials 0.000 claims description 12
- 238000010074 rubber mixing Methods 0.000 claims description 12
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims description 10
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- -1 N-phenyl-N' -1 Chemical compound 0.000 claims description 7
- GZNRISJLOXVOSH-UHFFFAOYSA-N n-phenylaniline;propan-2-one Chemical compound CC(C)=O.C=1C=CC=CC=1NC1=CC=CC=C1 GZNRISJLOXVOSH-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 claims description 6
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 claims description 4
- 108010039224 Amidophosphoribosyltransferase Proteins 0.000 claims description 4
- UTGQNNCQYDRXCH-UHFFFAOYSA-N N,N'-diphenyl-1,4-phenylenediamine Chemical compound C=1C=C(NC=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 UTGQNNCQYDRXCH-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 claims description 3
- CSJXOXIUHCUOBC-UHFFFAOYSA-N 2-(2-methylpentan-2-yl)benzene-1,4-diamine Chemical compound CCCC(C)(C)C1=CC(N)=CC=C1N CSJXOXIUHCUOBC-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 claims description 3
- GIUBHMDTOCBOPA-UHFFFAOYSA-N 3h-1,3-benzothiazole-2-thione;zinc Chemical compound [Zn].C1=CC=C2SC(S)=NC2=C1 GIUBHMDTOCBOPA-UHFFFAOYSA-N 0.000 claims description 3
- QRYFCNPYGUORTK-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-yldisulfanyl)morpholine Chemical compound C1COCCN1SSC1=NC2=CC=CC=C2S1 QRYFCNPYGUORTK-UHFFFAOYSA-N 0.000 claims description 3
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 claims description 3
- DNCLGFHLBSMLPC-UHFFFAOYSA-N [ethyl(phenyl)carbamothioyl]sulfanyl n-ethyl-n-phenylcarbamodithioate Chemical compound C=1C=CC=CC=1N(CC)C(=S)SSC(=S)N(CC)C1=CC=CC=C1 DNCLGFHLBSMLPC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004305 biphenyl Substances 0.000 claims description 3
- VTEKOFXDMRILGB-UHFFFAOYSA-N bis(2-ethylhexyl)carbamothioylsulfanyl n,n-bis(2-ethylhexyl)carbamodithioate Chemical compound CCCCC(CC)CN(CC(CC)CCCC)C(=S)SSC(=S)N(CC(CC)CCCC)CC(CC)CCCC VTEKOFXDMRILGB-UHFFFAOYSA-N 0.000 claims description 3
- NFZRSOHGHXZUPA-UHFFFAOYSA-N bis(2-methylpropyl)carbamothioyl n,n-bis(2-methylpropyl)carbamodithioate Chemical compound CC(C)CN(CC(C)C)C(=S)SC(=S)N(CC(C)C)CC(C)C NFZRSOHGHXZUPA-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- WITDFSFZHZYQHB-UHFFFAOYSA-N dibenzylcarbamothioylsulfanyl n,n-dibenzylcarbamodithioate Chemical compound C=1C=CC=CC=1CN(CC=1C=CC=CC=1)C(=S)SSC(=S)N(CC=1C=CC=CC=1)CC1=CC=CC=C1 WITDFSFZHZYQHB-UHFFFAOYSA-N 0.000 claims description 3
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 claims description 3
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 claims description 3
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- IENJMFWWRIWLIW-UHFFFAOYSA-N 3-methyl-1,3-thiazole-2-thione Chemical compound CN1C=CSC1=S IENJMFWWRIWLIW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004605 External Lubricant Substances 0.000 claims description 2
- 239000005063 High cis polybutadiene Substances 0.000 claims description 2
- 239000004610 Internal Lubricant Substances 0.000 claims description 2
- JYSSGQITKNFRQE-UHFFFAOYSA-N [3-(4-anilinoanilino)-2-hydroxypropyl] 2-methylprop-2-enoate Chemical compound C1=CC(NCC(O)COC(=O)C(=C)C)=CC=C1NC1=CC=CC=C1 JYSSGQITKNFRQE-UHFFFAOYSA-N 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims description 2
- UWNADWZGEHDQAB-UHFFFAOYSA-N i-Pr2C2H4i-Pr2 Natural products CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 21
- 239000001993 wax Substances 0.000 description 11
- 238000009472 formulation Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- VSTOHTVURMFCGL-UHFFFAOYSA-N [C].O=[Si]=O Chemical compound [C].O=[Si]=O VSTOHTVURMFCGL-UHFFFAOYSA-N 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
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- 230000003078 antioxidant effect Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RCPUUVXIUIWMEE-UHFFFAOYSA-N 2-(2,4-dinitrophenyl)sulfanyl-1,3-benzothiazole Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC=C1SC1=NC2=CC=CC=C2S1 RCPUUVXIUIWMEE-UHFFFAOYSA-N 0.000 description 1
- DSFCMDKJXNRJSS-UHFFFAOYSA-N 2-methylpropylcarbamothioylsulfanyl n-(2-methylpropyl)carbamodithioate Chemical compound CC(C)CNC(=S)SSC(=S)NCC(C)C DSFCMDKJXNRJSS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- KJZFYLRIYWTQCO-UHFFFAOYSA-N [3-(4-anilinoanilino)-2-hydroxypropyl] but-2-enoate Chemical compound C1=CC(NCC(O)COC(=O)C=CC)=CC=C1NC1=CC=CC=C1 KJZFYLRIYWTQCO-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000012962 antiaging additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002902 bimodal 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
- SKOLWUPSYHWYAM-UHFFFAOYSA-N carbonodithioic O,S-acid Chemical compound SC(S)=O SKOLWUPSYHWYAM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- CMAUJSNXENPPOF-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-n-cyclohexylcyclohexanamine Chemical compound C1CCCCC1N(C1CCCCC1)SC1=NC2=CC=CC=C2S1 CMAUJSNXENPPOF-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a wear-resistant ozone-resistant railway vibration-damping rubber cushion plate and a preparation method and application thereof, wherein the rubber cushion plate comprises the following raw materials in parts by weight: 70-80 parts of butadiene styrene rubber, 20-30 parts of butadiene rubber, 3-5 parts of zinc oxide, 2-4 parts of stearic acid, 1-2 parts of sulfur, 0.5-1 part of a dispersing agent, 0.5-1.5 parts of a coupling agent, 4-5 parts of a vulcanization promoting component, 4-6 parts of an anti-aging component and 70-85 parts of a wear-resistant reinforcing component; styrene butadiene rubber and butadiene rubber are added up to 100 parts; the anti-aging component is prepared from the following raw materials in parts by weight, wherein the protective wax comprises a p-phenylenediamine anti-aging agent and a ketoamine anti-aging agent in a ratio of 1-2:1-3:2-3; the wear-resistant reinforcing component is prepared from the following raw materials in parts by weight. The rubber backing plate has excellent comprehensive performance.
Description
Technical Field
The invention relates to the technical field of railway vibration-damping rubber backing plates, in particular to a wear-resistant and ozone-resistant railway vibration-damping rubber backing plate, and a preparation method and application thereof.
Background
The track structure in the high-speed railway system is an important aspect affecting the safe, stable and comfortable running of the train, and is divided into two major types, namely a ballasted track and a ballastless track at present. The ballastless track has the advantages of long service life, convenient maintenance and replacement, capability of supporting the stable running of a higher-speed train and the like, and becomes the first choice for track construction in the field of high-speed trains in China. The high polymer material backing plate used as a connecting track bed and a steel rail in the ballastless track plays an important role in the running process of a train. The rubber backing plate is the most widely applied material in the track structure backing plate due to the advantages of excellent durability, wear resistance, strong shearing and extrusion deformation resistance and the like.
However, the rubber pad causes severe internal friction under the action of a cyclic external force, and a reaction force is generated. In the process of resisting external vibration, the force weakens the amplitude of the vibration, and the mechanical energy is converted into heat energy, so that part of the heat energy is dissipated, and the other part of the heat energy is accumulated, so that the rubber heats, the rubber material is aged, and the service life of the rubber material is greatly reduced; in addition, the rubber backing plate is subjected to mutual friction among fasteners in the use process besides the thermal-oxidative aging phenomenon generated by internal heat generation under the cyclic load, so that the backing plate is seriously worn. Meanwhile, environmental factors such as ozone and the like have obvious influence on the performance of the base plate, and the service life of the base plate can be seriously influenced.
Therefore, the wear-resistant ozone-resistant railway vibration-damping rubber pad is particularly important for the railway track industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wear-resistant ozone-resistant railway vibration-damping rubber backing plate, and a preparation method and application thereof.
In order to solve the problems, the invention adopts the following technical scheme:
In a first aspect, a wear-resistant and ozone-resistant railway vibration-damping rubber cushion plate is provided, which comprises the following raw materials in parts by weight: 70-80 parts of butadiene styrene rubber, 20-30 parts of butadiene rubber, 3-5 parts of zinc oxide, 2-4 parts of stearic acid, 1-2 parts of sulfur, 0.5-1 part of a dispersing agent, 0.5-1.5 parts of a coupling agent, 4-5 parts of a vulcanization promoting component, 4-6 parts of an anti-aging component and 70-85 parts of a wear-resistant reinforcing component;
wherein the styrene-butadiene rubber and the butadiene rubber add up to 100 parts;
The anti-aging component is prepared from the following raw materials in parts by weight;
The wear-resistant reinforcing component is prepared from the following raw materials in parts by weight.
As one embodiment of the invention, the protective wax has a solidifying point of 61-67 ℃, a refractive index of 1.423-1.433, a viscosity of 6.3-7.5 centistokes (cSt) at 100 ℃ (6.3X10 -6 square meters per second (m 2/sec)) ~ (7.5×10- 6m2/sec.) further, the protective wax is composed of a mixture of refined paraffin wax and microcrystalline wax, has a broad molecular weight distribution and a typical bimodal structure, has a medium diffusion rate, a broad protective temperature range, and has excellent low-temperature and high-temperature protective properties.
As one embodiment of the invention, the p-phenylenediamine anti-aging agent is selected from one or more of N, N '-diphenyl-p-phenylenediamine, N-phenyl-N' -cyclohexyl-p-phenylenediamine, N-phenyl-N '-isopropyl-p-phenylenediamine, N-phenyl-N' -1, 3-dimethylbutyl-p-phenylenediamine, N '-di-beta-naphthalene-p-phenylenediamine, N- (4-phenylamino) -methacrylamide and N- (3-methacryloyloxy-2-hydroxypropyl) -N' -phenyl-p-phenylenediamine.
As one embodiment of the invention, the ketoamine antioxidant is one or more selected from 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, acetone-diphenylamine high-temperature condensate and acetone-diphenylamine low-temperature condensate.
As one embodiment of the invention, the carbon-silica dual-phase filler is composed of two phases, namely a carbon phase and a fine silica phase dispersed on the surface of the carbon phase and in the carbon phase; the carbon-silicon dioxide double-phase filler is CSDPF-2000 series;
The silane coupling agent is modified into platy nano kaolin, wherein the content of the silane coupling agent is 3-5% of the total weight of the kaolin in percentage by weight; the aggregate content is not less than 1 mu m and not less than 60%, the apparent density is 0.6-1.0 g/cm 3, and the screen residue amount of 45 mu m is not more than 0.02%; adding water into the silane coupling agent modified platy nano kaolin to prepare the nano kaolin with the mass concentration of 10%, wherein the pH value is 8-10; the silane coupling agent is gamma-aminopropyl triethoxysilane;
The thickness of the graphene is 0.335-1.0 nm, and the diameter of the sheet layer is 10-50 mu m.
As one embodiment of the invention, the styrene-butadiene rubber is 1500 series, and the brand is: one of SBR 1500, SBR 1500E, SBR1502, SBR 1502E; the butadiene rubber is non-oil-extended high cis-polybutadiene rubber with the brand: one of BR 9000, BR 9001, BR9002, BR 9100; the sulfur is oil-filled insoluble sulfur, and the brand is: one of IS 8010, IS 7520, IS7020, IS 6033, IS 6010, IS 6005; the dispersing agent is an internal and external lubricant, an active agent and a metal soap compound, and the brand is as follows: one or more of AT-C, AT-B, FS-97 and DB 600; the coupling agent is Si69-50.
As an implementation mode of the invention, the vulcanization promoting component is prepared from the following raw materials in parts by weight.
As one embodiment of the invention, the thiazole-based accelerator is selected from one or more of 2-mercaptobenzothiazole, 2 '-dibenzothiazyl disulfide, zinc 2-mercaptobenzothiazole, 2- (4-morpholinyldithio) benzothiazole, N' -diethyl-dithioaminobenzothiazole, benzothiazole, 3-methyl-2-thiazolethione, 2- (2, 4-dinitrophenylthio) benzothiazole;
The sulfenamide accelerator is one or more of N-cyclohexyl-2-benzothiazole sulfenamide, N-oxydi (1, 2-ethylene) -2-benzothiazole sulfenamide, N-dicyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, N-oxyethylenethiocarbamoyl-N' -oxydiethylene sulfenamide, N-tert-butyl-di-2-benzothiazole sulfenamide and N-cyclohexyl-di (2-mercaptobenzothiazole) sulfenamide;
The thiuram accelerator is selected from one or more of tetrabenzyl thiuram disulfide, diisobutyl thiuram disulfide, dipentamethylenethiuram tetrasulfide, tetraisobutyl thiuram monosulfide, tetra (2-ethylhexyl) thiuram disulfide, N-dimethyl-N, N, -diphenyl thiuram disulfide, diethyl diphenyl thiuram disulfide, tetramethyl thiuram disulfide, tetraethyl thiuram disulfide, tetramethyl thiuram monosulfide and tetrabutyl thiuram disulfide.
In a second aspect, there is provided a method for preparing the wear-resistant ozone-resistant railway vibration-damping rubber pad according to the first aspect, the method comprising:
Firstly, adding styrene-butadiene rubber and butadiene rubber into an internal mixer for plasticating, wherein the plasticating temperature is 110-130 ℃, the rotating speed is 30-40 r/min, and the plasticating time is 5-10 min;
sequentially adding zinc oxide, stearic acid, a dispersing agent, a coupling agent, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 7-10 min, and standing at 130-150 ℃ until the temperature of rubber discharge reaches room temperature;
Step three, after the sizing material is uniformly mixed, adding sulfur and vulcanization promoting components into an internal mixer, continuously mixing for 3-5min, discharging the sizing material after the temperature is 100-120 ℃, and standing to room temperature;
Step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling the rubber material into sheets for 3-5 times, wrapping the sheets for 3-5 times by a triangle to obtain uniform rubber sheets, standing for 12 hours, and extruding and molding by a cold feeding extruder;
Step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: the vulcanization temperature is 160-180 ℃, the vulcanization time is 8-20 min, and the pressure is 15-20 MPa.
In a third aspect, there is provided a wear-resistant ozone-resistant railway vibration-damping rubber pad according to the first aspect, the resulting rubber pad being used in railway lines.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the railway vibration-damping rubber cushion plate provided by the invention has outstanding wear resistance, thermal-oxidative aging resistance and ozone resistance, excellent comprehensive performance and long service life, and can reduce the replacement frequency of the cushion plate and reduce the pollution to the environment.
In addition, in the anti-aging component, carbon-silicon dioxide dual-phase filler (CSDFP) is adopted, the adsorption energy and the combined rubber content of CSDFP are higher than those of a physical mixture of carbon black and white carbon black, the Payne effect of CSDFP rubber is lower than that of carbon black and white carbon black filler, the filler aggregation degree is lower, the dispersion effect is good, the interaction between the filler and the filler is smaller, the modulus is more stable under dynamic cyclic load, and the rigidity stability of the backing plate under dynamic use conditions is ensured. The high surface activity of CSDFP enables the interaction between the filler and the rubber to be higher, meanwhile, the silane coupling agent is adopted to modify the platy nano kaolin to play a synergistic effect of vibration reduction, the small particle size, the large specific surface area and the high surface activity of the kaolin enable the binding points between the filler and the rubber to be more, the thixotropy to be larger, hysteresis loss is generated in dynamic strain, the damping performance of the sizing material is increased, and the vibration reduction performance is more excellent. The high interaction between the filler and the rubber can also obviously improve the wear resistance of the rubber material. The graphene composite material is matched with graphene with lower content, the graphene can be dispersed more uniformly in the rubber material, a network passage is formed in the rubber material, the good thermal conductivity of the graphene accelerates the dissipation of heat generated in the rubber material under dynamic load, the temperature rise in the rubber backing plate under the use condition is reduced, the thermal oxidation aging of the backing plate is slowed down, and the service life of the backing plate is prolonged.
In addition, in the wear-resistant reinforcing component, the aging performance of rubber is improved by adopting a mode of combining protective wax and an anti-aging agent, so that the dual effects of physical protection and chemical protection can be achieved. After the product is vulcanized, a tough and compact wax film can be continuously formed on the surface of the rubber product, ozone cracking can be effectively prevented, protection can be performed under a dynamic working condition, the migration speed is moderate, and a long-term protection effect can be formed. The protective wax, the ketoamine antioxidant and the p-diphenylamine antioxidant are combined to have synergistic effect on pad ozone protection, so that the dual-layer protection is realized from the physical and chemical angles, and the cracking prevention effect is better. The p-phenylenediamine anti-aging agent is combined in the network structure of the rubber in a chemical bond and mode, so that the anti-aging agent molecules cannot migrate freely and do not volatilize and withdraw, the durability of the protection effect is improved, and the pollution is reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be clearly and completely described in connection with the following specific embodiments.
Example 1
The wear-resistant ozone-resistant railway vibration-damping rubber cushion plate comprises the following raw materials in parts by weight: 70 parts of styrene-butadiene rubber SBR 1500, 30 parts of butadiene rubber BR 9000, 3 parts of zinc oxide, 2 parts of stearic acid, 1 part of insoluble sulfur IS 8010, 0.5 part of dispersing agent AT-C, 0.5 part of coupling agent Si69-50, 4 parts of vulcanization promoting component, 4 parts of anti-aging component and 70 parts of wear-resistant reinforcing component;
Wherein the vulcanization promoting component is prepared from the following raw materials in percentage by weight, wherein the vulcanizing agent DTDM comprises thiazole accelerators, sulfenamide accelerators and thiuram accelerators, and the weight ratio of the sulfenamide accelerators to the thiuram accelerators is 0.5:0.5:1:0.3; wherein the thiazole accelerant is a mixture of 2- (4-morpholinodithio) benzothiazole, N' -diethyl-dithioaminobenzothiazole and 2- (2, 4-dinitrothio) benzothiazole, the sulfenamide accelerant is a mixture of N-tertiary butyl-2-benzothiazole sulfenamide, N-tertiary butyl bis-2-benzothiazole sulfenamide and N-oxybis (1, 2-ethylene) -2-benzothiazole sulfenamide, and the thiuram accelerant is a mixture of tetramethylthiuram disulfide, tetra (2-ethylhexyl) thiuram disulfide, dipentamethylenethiuram tetrasulfide and tetrabutylthiuram disulfide;
The anti-aging component is prepared from the following raw materials in percentage by weight, wherein the protective wax comprises p-phenylenediamine anti-aging agents and ketoamine anti-aging agents in a ratio of 1:1:2; wherein, the p-phenylenediamine anti-aging agent is the mixture of N-phenyl-N '-isopropyl p-phenylenediamine, N- (4-phenylamino) -methylacrylamide and N- (3-methylacryloyloxy-2-hydroxypropyl) -N' -phenyl-p-phenylenediamine, and the ketoamine anti-aging agent is the mixture of acetone-diphenylamine high-temperature condensate and acetone-diphenylamine low-temperature condensate;
The wear-resistant reinforcing component is prepared from the following raw materials in percentage by weight, wherein the carbon-silicon dioxide double-phase filler CSDPF is prepared from silane coupling agent modified platy nano kaolin and graphene in a ratio of 15:35:1.
The preparation method of the wear-resistant and ozone-resistant railway vibration reduction rubber cushion plate comprises the following steps:
Step one, adding styrene-butadiene rubber SBR 1500 and butadiene rubber BR 9000 into an internal mixer for plasticating, wherein the plasticating temperature is 110 ℃, the rotating speed is 30r/min, and the plasticating time is 10min;
Sequentially adding zinc oxide, stearic acid, a dispersing agent AT-C, si-50, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 7min, and standing AT 130 ℃ until the temperature of rubber discharge reaches room temperature;
Adding insoluble sulfur IS 8010 and vulcanization promoting components into an internal mixer to continuously mix for 3min after the sizing material IS uniformly mixed, discharging sizing materials after the temperature reaches 100 ℃, and standing to room temperature;
step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling the rubber material into sheets for 3 times, wrapping the sheets for 3 times by a triangle, obtaining uniform rubber sheets, standing for 12 hours, and extruding and forming by a cold feeding extruder;
Step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: the vulcanization temperature is 160 ℃, the vulcanization time is 20min, and the pressure is 15MPa.
Example 2
The wear-resistant ozone-resistant railway vibration-damping rubber cushion plate comprises the following raw materials in parts by weight: 75 parts of styrene-butadiene rubber SBR 1500E, 25 parts of butadiene rubber BR 9001, 4 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of insoluble sulfur IS 7520, 0.7 part of dispersing agent AT-B, 0.8 part of coupling agent Si69-50, 4.5 parts of vulcanization promoting component, 5 parts of anti-aging component and 80 parts of wear-resistant reinforcing component;
Wherein the vulcanization promoting component is prepared from the following raw materials in percentage by weight, wherein the vulcanizing agent DTDM comprises thiazole accelerators, sulfenamide accelerators and thiuram accelerators, and the weight ratio of the sulfenamide accelerators to the thiuram accelerators is 0.5:0.5:2:0.3; the thiazole accelerant is 2-mercaptobenzothiazole, the sulfenamide accelerant is N-cyclohexyl-2-benzothiazole sulfenamide, and the thiuram accelerant is tetrabenzyl thiuram disulfide;
The anti-aging component is prepared from the following raw materials in percentage by weight, wherein the protective wax comprises p-phenylenediamine anti-aging agents and ketoamine anti-aging agents in a ratio of 1:2:2; wherein, the p-phenylenediamine anti-aging agent is N, N' -diphenyl-p-phenylenediamine, and the ketoamine anti-aging agent is 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline;
The wear-resistant reinforcing component is prepared from the following raw materials in percentage by weight, wherein the carbon-silicon dioxide double-phase filler CSDPF is prepared from silane coupling agent modified platy nano kaolin and graphene in a ratio of 18:35:1.
The preparation method of the wear-resistant and ozone-resistant railway vibration reduction rubber cushion plate comprises the following steps:
Step one, adding styrene-butadiene rubber SBR 1500E and butadiene rubber BR 9001 into an internal mixer for plasticating, wherein the plasticating temperature is 120 ℃, the rotating speed is 35r/min, and the plasticating time is 8min;
Sequentially adding zinc oxide, stearic acid, a dispersing agent AT-B, si-50, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 8min, and standing AT 140 ℃ until the temperature of rubber discharge reaches room temperature;
adding insoluble sulfur IS 7520 and vulcanization promoting components into an internal mixer to continuously mix for 4min after the sizing material IS uniformly mixed, discharging the sizing material after the temperature reaches 110 ℃, and standing to room temperature;
Step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling rubber into sheets for 4 times, packaging by a triangle for 4 times to obtain uniform rubber sheets, standing for 12 hours, and extruding and molding by a cold feeding extruder;
step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: the vulcanization temperature is 170 ℃, the vulcanization time is 13min, and the pressure is 18MPa.
Example 3
The wear-resistant ozone-resistant railway vibration-damping rubber cushion plate comprises the following raw materials in parts by weight: 72 parts of styrene-butadiene rubber SBR 1502E, 28 parts of butadiene rubber BR 9002, 4.5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of insoluble sulfur IS 6033, 0.8 part of dispersing agent DB600, 0.6 part of coupling agent Si69-50, 4.3 parts of vulcanization promoting component, 4.5 parts of anti-aging component and 75 parts of wear-resistant reinforcing component;
Wherein the vulcanization promoting component is prepared from the following raw materials in percentage by weight, wherein the vulcanizing agent DTDM comprises thiazole accelerators, sulfenamide accelerators and thiuram accelerators, and the weight ratio of the sulfenamide accelerators to the thiuram accelerators is 0.5:1:1:0.3; wherein the thiazole accelerant is a mixture of 2,2' -dibenzothiazyl disulfide and benzothiazole, the sulfenamide accelerant is N-cyclohexyl-bis (2-mercaptobenzothiazole) sulfenamide, and the thiuram accelerant is a mixture of tetraethylthiuram disulfide and tetraisobutylthiuram monosulfide;
The anti-aging component is prepared from the following raw materials in percentage by weight, wherein the protective wax comprises p-phenylenediamine anti-aging agents and ketoamine anti-aging agents in a ratio of 1:1:3; wherein, the p-phenylenediamine anti-aging agent is N, N' -di-beta-naphthalene p-phenylenediamine, and the ketoamine anti-aging agent is 2, 4-trimethyl-1, 2-dihydroquinoline polymer;
The wear-resistant reinforcing component is prepared from the following raw materials in percentage by weight, namely CSDPF to 2000 of carbon-silicon dioxide double-phase filler, and 15 to 40 to 1 of silane coupling agent modified platy nano kaolin and graphene.
The preparation method of the wear-resistant and ozone-resistant railway vibration reduction rubber cushion plate comprises the following steps:
step one, adding styrene-butadiene rubber SBR 1502E and butadiene rubber BR 9002 into an internal mixer for plasticating, wherein the plasticating temperature is 120 ℃, the rotating speed is 40r/min, and the plasticating time is 6min;
Sequentially adding zinc oxide, stearic acid, a dispersing agent DB600, si69-50, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 9min, wherein the glue discharging temperature is 145 ℃, and standing to room temperature;
adding insoluble sulfur IS 6033 and vulcanization promoting components into an internal mixer to continuously mix for 4min after the sizing material IS uniformly mixed, discharging the sizing material after the temperature reaches 100 ℃, and standing to room temperature;
Step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling the rubber material into sheets for 3 times, wrapping the sheets by a triangle for 5 times to obtain uniform rubber sheets, standing for 12 hours, and extruding and molding by a cold feeding extruder;
step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: vulcanizing at 170deg.C for 17min and 15MPa.
Example 4
The wear-resistant ozone-resistant railway vibration-damping rubber cushion plate comprises the following raw materials in parts by weight: 80 parts of styrene-butadiene rubber SBR 1502, 20 parts of butadiene rubber BR 9100, 5 parts of zinc oxide, 4 parts of stearic acid, 2 parts of insoluble sulfur IS 6005, 1 part of a mixture of dispersing agents AT-B and FS-97, 1.5 parts of coupling agents Si69-50, 5 parts of vulcanization promoting components, 6 parts of anti-aging components and 80 parts of wear-resistant reinforcing components;
Wherein the vulcanization promoting component is prepared from the following raw materials in percentage by weight, wherein the vulcanizing agent DTDM comprises thiazole accelerators, sulfenamide accelerators and thiuram accelerators, and the weight ratio of the sulfenamide accelerators to the thiuram accelerators is 1:1:2:0.7; wherein the thiazole accelerant is a mixture of 2-mercaptobenzothiazole zinc and 3-methyl-2-thiazole thioketone, the sulfenamide accelerant is a mixture of N, N-dicyclohexyl-2-benzothiazole sulfenamide and N-oxyethylenethiocarbamoyl-N' -oxydiethylenetriamine, and the thiuram accelerant is a mixture of N, N, -dimethyl-N, N, -diphenyl thiuram disulfide, diisobutylthiuram disulfide, diethyl diphenyl thiuram disulfide and tetramethylthiuram monosulfide;
The anti-aging component is prepared from the following raw materials in percentage by weight, wherein the protective wax comprises p-phenylenediamine anti-aging agents and ketoamine anti-aging agents in a ratio of 2:3:3; wherein, the p-phenylenediamine anti-aging agent is the mixture of N-phenyl-N '-cyclohexyl p-phenylenediamine and N-phenyl-N' -1, 3-dimethylbutyl p-phenylenediamine, and the ketoamine anti-aging agent is the mixture of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline, 2, 4-trimethyl-1, 2-dihydroquinoline polymer and acetone-diphenylamine high-temperature condensate;
The wear-resistant reinforcing component is prepared from the following raw materials in percentage by weight, namely CSDPF to 2000 of carbon-silicon dioxide double-phase filler, and 20 to 40 to 2 of silane coupling agent modified platy nano kaolin and graphene.
The preparation method of the wear-resistant and ozone-resistant railway vibration reduction rubber cushion plate comprises the following steps:
Step one, adding styrene-butadiene rubber SBR 1502 and butadiene rubber BR 9100 into an internal mixer for plasticating, wherein the plasticating temperature is 130 ℃, the rotating speed is 40r/min, and the plasticating time is 5min;
Sequentially adding zinc oxide, stearic acid, a mixture of a dispersing agent AT-B and FS-97, si69-50, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 10min, wherein the glue discharging temperature is 150 ℃, and standing to room temperature;
adding insoluble sulfur IS 6005 and vulcanization promoting components into an internal mixer to continuously mix for 5min after the sizing material IS uniformly mixed, discharging sizing materials after the temperature reaches 120 ℃, and standing to room temperature;
step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling the rubber material into sheets for 5 times, wrapping the sheets by a triangle for 5 times to obtain uniform rubber sheets, standing for 12 hours, and extruding and molding by a cold feeding extruder;
Step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: the vulcanization temperature is 180 ℃, the vulcanization time is 8min, and the pressure is 20MPa.
Comparative example 1
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: the carbon-silica dual phase filler CSDPF2000 in the present formulation is changed to a combination of silica and carbon black.
Comparative example 2
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: graphene is removed from the formulation.
Comparative example 3
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: kaolin not modified with a silane coupling agent was used in the present formulation.
Comparative example 4
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: the anti-aging component in the formula is prepared from the following raw materials in percentage by weight, wherein the protective wax is ketoamine anti-aging agent (6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline) in a ratio of 1:4.
Comparative example 5
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: the anti-aging component in the formula is prepared from the following raw materials in percentage by weight.
Comparative example 6
This comparative example used a similar formulation and method to example 2 to prepare a rubber mat, except that: the anti-aging component in the formula is prepared from the following raw materials in percentage by weight, wherein the para-phenylenediamine anti-aging agent is ketoamine anti-aging agent in a ratio of 2:2; wherein the p-phenylenediamine anti-aging agent is N, N' -diphenyl-p-phenylenediamine, and the ketoamine anti-aging agent is 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline.
Effect example:
The rubber mats obtained in examples 1 to 4 and comparative examples 1 to 6 were tested for hardness, tensile strength, elongation at break, 200% elongation stress, permanent compression set (100 ℃ C., 24 hours), acle abrasion (sample abrasion volume) and hot air aging (100 ℃ C., 72 hours), respectively.
The performance test index and method are as follows:
Hardness: testing according to GB/T531.1 standard; tensile strength, elongation at break, 200% tensile stress: tested according to GB/T528 standard; constant compression set (100 ℃,24 h): tested according to GB/T7759 standard; acle abrasion (sample abrasion volume): tested according to GB/T1690 standard; hot air aging (100 ℃,72 h): testing according to GB/T3512 standard; fatigue properties were measured according to the TB/T3395 standard.
The test results are shown in tables 1 and 2:
table 1 test results of rubber pad obtained in examples 1 to 4
TABLE 2 results of rubber pad tests obtained in comparative examples 1-6
As is clear from Table 2, the rubber backing plates obtained in examples 1 to 3 have hardness of not less than 74, tensile strength of not less than 15.0MPa, elongation at break of not less than 358%, 200% tensile stress of not more than 11MPa and constant compression set (100 ℃ for 24 hours) of not more than 17 under the premise of satisfying the service performance;
in addition, the abrasion of the Aldrich can be as low as 0.38 cm 3/1.61 km, and the abrasion resistance is good; good ageing performance and oil resistance.
In the comparative example 1, the carbon-silicon dioxide double-phase filler is replaced by silicon dioxide and carbon black, so that the dispersion performance of the filler is poor, the dispersion of the filler in the rubber material is affected, and the tensile strength, the elongation at break and the wear resistance of the rubber material are poor;
In comparative example 2, graphene is not added, heat dissipation is not easy under the dynamic working condition of the filler, and the fatigue performance is poor.
The kaolin added in the comparative example 3 is not modified, and the binding capacity between the kaolin filler and the rubber molecular chain is poor, so that the tensile strength, the elongation at break and the wear resistance of the sizing material are poor;
Comparative example 4 does not use ketoamine antioxidants, and all of the ketoamine antioxidants are replaced by p-phenylenediamine antioxidants; comparative example 5 does not use a p-phenylenediamine anti-aging agent, and is replaced by a ketoamine anti-aging agent; comparative example 6 did not use a protective wax. The various anti-aging additives of comparative examples 4-6 were not used in combination, resulting in a compound having poor thermo-oxidative aging resistance and compression set.
Therefore, the rubber backing plate provided by the invention has excellent comprehensive performance.
Claims (10)
1. The wear-resistant and ozone-resistant railway vibration-damping rubber cushion plate is characterized by comprising the following raw materials in parts by weight: 70-80 parts of butadiene styrene rubber, 20-30 parts of butadiene rubber, 3-5 parts of zinc oxide, 2-4 parts of stearic acid, 1-2 parts of sulfur, 0.5-1 part of a dispersing agent, 0.5-1.5 parts of a coupling agent, 4-5 parts of a vulcanization promoting component, 4-6 parts of an anti-aging component and 70-85 parts of a wear-resistant reinforcing component;
wherein the styrene-butadiene rubber and the butadiene rubber add up to 100 parts;
The anti-aging component is prepared from the following raw materials in parts by weight;
The wear-resistant reinforcing component is prepared from the following raw materials in parts by weight.
2. The wear-resistant and ozone-resistant railway vibration damping rubber cushion plate according to claim 1, wherein the solidifying point of the protective wax is 61-67 ℃, the refractive index value is 1.423-1.433, and the viscosity value at 100 ℃ is 6.3-7.5 centistokes.
3. The wear-resistant and ozone-resistant railway vibration damping rubber gasket according to claim 1, wherein the p-phenylenediamine anti-aging agent is one or more selected from the group consisting of N, N '-diphenyl-p-phenylenediamine, N-phenyl-N' -cyclohexyl-p-phenylenediamine, N-phenyl-N '-isopropyl-p-phenylenediamine, N-phenyl-N' -1, 3-dimethylbutyl-p-phenylenediamine, N '-di-beta-naphthalene-p-phenylenediamine, N- (4-phenylamino) -methacrylanilide, N- (3-methacryloyloxy-2-hydroxypropyl) -N' -phenyl-p-phenylenediamine.
4. The wear-resistant and ozone-resistant railway vibration-damping rubber cushion according to claim 1, wherein the ketoamine anti-aging agent is one or more selected from 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, acetone-diphenylamine high-temperature condensate and acetone-diphenylamine low-temperature condensate.
5. The wear-resistant and ozone-resistant railway vibration-damping rubber cushion plate according to claim 1, wherein the carbon-silica dual-phase filler is composed of two phases, namely a carbon phase and a fine silica phase dispersed on the surface of the carbon phase and in the carbon phase;
The silane coupling agent is modified into platy nano kaolin, wherein the content of the silane coupling agent is 3-5% of the total weight of the kaolin in percentage by weight; the aggregate content is not less than 1 mu m and not less than 60%, the apparent density is 0.6-1.0 g/cm 3, and the screen residue amount of 45 mu m is not more than 0.02%; adding water into the silane coupling agent modified platy nano kaolin to prepare the nano kaolin with the mass concentration of 10%, wherein the pH value is 8-10; the silane coupling agent is gamma-aminopropyl triethoxysilane;
The thickness of the graphene is 0.335-1.0 nm, and the diameter of the sheet layer is 10-50 mu m.
6. The wear-resistant and ozone-resistant railway vibration-damping rubber cushion plate according to claim 1, wherein the styrene-butadiene rubber is 1500 series and has the following brand: one of SBR 1500, SBR 1500E, SBR 1502, SBR 1502E; the butadiene rubber is non-oil-extended high cis-polybutadiene rubber with the brand: one of BR 9000, BR 9001, BR 9002, BR 9100; the sulfur is oil-filled insoluble sulfur, and the brand is: one of IS 8010, IS 7520, IS 7020, IS 6033, IS 6010, IS 6005; the dispersing agent is an internal and external lubricant, an active agent and a metal soap compound, and the brand is as follows: one or more of AT-C, AT-B, FS-97 and DB 600; the coupling agent is Si69-50.
7. The wear-resistant ozone-resistant railway vibration-damping rubber cushion plate according to claim 1, wherein the vulcanization-promoting component is prepared from the following raw materials in parts by weight.
8. The wear-resistant and ozone-resistant railway vibration-damping rubber gasket according to claim 7, wherein the thiazole-based accelerator is selected from one or more of 2-mercaptobenzothiazole, 2 '-dibenzothiazyl disulfide, zinc 2-mercaptobenzothiazole, 2- (4-morpholinyldithio) benzothiazole, N' -diethyl-dithioaminobenzothiazole, benzothiazole, 3-methyl-2-thiazolethione, 2- (2, 4-dinitrothiopheno) benzothiazole;
The sulfenamide accelerator is one or more of N-cyclohexyl-2-benzothiazole sulfenamide, N-oxydi (1, 2-ethylene) -2-benzothiazole sulfenamide, N-dicyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, N-oxyethylenethiocarbamoyl-N' -oxydiethylene sulfenamide, N-tert-butyl-di-2-benzothiazole sulfenamide and N-cyclohexyl-di (2-mercaptobenzothiazole) sulfenamide;
The thiuram accelerator is selected from one or more of tetrabenzyl thiuram disulfide, diisobutyl thiuram disulfide, dipentamethylenethiuram tetrasulfide, tetraisobutyl thiuram monosulfide, tetra (2-ethylhexyl) thiuram disulfide, N-dimethyl-N, N, -diphenyl thiuram disulfide, diethyl diphenyl thiuram disulfide, tetramethyl thiuram disulfide, tetraethyl thiuram disulfide, tetramethyl thiuram monosulfide and tetrabutyl thiuram disulfide.
9. A method for preparing the wear-resistant and ozone-resistant railway vibration-damping rubber pad according to any one of claims 1-8, which is characterized by comprising the following steps:
Firstly, adding styrene-butadiene rubber and butadiene rubber into an internal mixer for plasticating, wherein the plasticating temperature is 110-130 ℃, the rotating speed is 30-40 r/min, and the plasticating time is 5-10 min;
sequentially adding zinc oxide, stearic acid, a dispersing agent, a coupling agent, an anti-aging component and a wear-resistant reinforcing component into an internal mixer after plasticating is finished, mixing for 7-10 min, and standing at 130-150 ℃ until the temperature of rubber discharge reaches room temperature;
Step three, after the sizing material is uniformly mixed, adding sulfur and vulcanization promoting components into an internal mixer, continuously mixing for 3-5 minutes, discharging the sizing material after the temperature is 100-120 ℃, and standing to room temperature;
Step four, adding the mixed rubber after banburying in the step three into an open rubber mixing machine, defaulting a roll speed using device, adjusting a roll gap to be minimum, introducing cooling water, controlling the roll temperature to be not higher than 75 ℃, mixing by the open rubber mixing machine, falling the rubber material into sheets for 3-5 times, wrapping the sheets for 3-5 times by a triangle to obtain uniform rubber sheets, standing for 12 hours, and extruding and molding by a cold feeding extruder;
Step five, putting the formed film obtained in the step four into a flat vulcanizing machine for vulcanizing treatment to obtain the finished product; the parameters of the vulcanization treatment are as follows: the vulcanization temperature is 160-180 ℃, the vulcanization time is 8-20 min, and the pressure is 15-20 MPa.
10. The wear-resistant ozone-resistant railway vibration-damping rubber pad according to any one of claims 1-8, wherein the obtained rubber pad is applied to railway lines.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030016805A (en) * | 2001-08-22 | 2003-03-03 | 주식회사 세라그린 | A composition comprising waste ferric oxide for sound insulation materials and high density rubber, a method for preparing sound insulation materials and high density rubber and sound insulation material and high density rubber made thereby |
| CN109054127A (en) * | 2018-07-26 | 2018-12-21 | 合肥市大卓电力有限责任公司 | Wear-resisting ageing-resistant power cable sheath material of one kind and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030016805A (en) * | 2001-08-22 | 2003-03-03 | 주식회사 세라그린 | A composition comprising waste ferric oxide for sound insulation materials and high density rubber, a method for preparing sound insulation materials and high density rubber and sound insulation material and high density rubber made thereby |
| CN109054127A (en) * | 2018-07-26 | 2018-12-21 | 合肥市大卓电力有限责任公司 | Wear-resisting ageing-resistant power cable sheath material of one kind and preparation method thereof |
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