CN115716940B - Rubber composition, vulcanized rubber, preparation method and application thereof - Google Patents
Rubber composition, vulcanized rubber, preparation method and application thereof Download PDFInfo
- Publication number
- CN115716940B CN115716940B CN202110977074.0A CN202110977074A CN115716940B CN 115716940 B CN115716940 B CN 115716940B CN 202110977074 A CN202110977074 A CN 202110977074A CN 115716940 B CN115716940 B CN 115716940B
- Authority
- CN
- China
- Prior art keywords
- rubber
- parts
- mixing
- weight
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 165
- 239000005060 rubber Substances 0.000 title claims abstract description 165
- 239000000203 mixture Substances 0.000 title claims abstract description 67
- 239000004636 vulcanized rubber Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 74
- 239000006229 carbon black Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000004073 vulcanization Methods 0.000 claims abstract description 41
- 239000011159 matrix material Substances 0.000 claims abstract description 40
- 239000003607 modifier Substances 0.000 claims abstract description 39
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 35
- 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 claims abstract description 31
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 30
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 30
- 229920001194 natural rubber Polymers 0.000 claims abstract description 30
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 29
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 29
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 16
- PWKSKIMOESPYIA-UHFFFAOYSA-N 2-acetamido-3-sulfanylpropanoic acid Chemical group CC(=O)NC(CS)C(O)=O PWKSKIMOESPYIA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000012190 activator Substances 0.000 claims abstract description 12
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 19
- 239000011593 sulfur Substances 0.000 claims description 19
- 229910052717 sulfur Inorganic materials 0.000 claims description 19
- 239000001038 titanium pigment Substances 0.000 claims description 17
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 14
- 239000004902 Softening Agent Substances 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 150000004665 fatty acids Chemical class 0.000 claims description 6
- 239000010692 aromatic oil Substances 0.000 claims description 5
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000344 soap Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000005662 Paraffin oil Substances 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 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 2
- HNWAHFPYJHAAJE-UHFFFAOYSA-N n-tert-butyl-1,3-benzothiazole-2-sulfonamide Chemical compound C1=CC=C2SC(S(=O)(=O)NC(C)(C)C)=NC2=C1 HNWAHFPYJHAAJE-UHFFFAOYSA-N 0.000 claims 2
- 238000012545 processing Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 34
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical group C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 description 18
- 239000011787 zinc oxide Substances 0.000 description 17
- 235000021355 Stearic acid Nutrition 0.000 description 15
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 15
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 15
- 239000008117 stearic acid Substances 0.000 description 15
- 235000010215 titanium dioxide Nutrition 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 9
- 238000011056 performance test Methods 0.000 description 9
- 238000007599 discharging Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 4
- 229960002447 thiram Drugs 0.000 description 4
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 3
- -1 TDAE Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 239000005063 High cis polybutadiene Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid group Chemical group C(\C=C/C(=O)O)(=O)O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004201 L-cysteine Substances 0.000 description 1
- 235000013878 L-cysteine Nutrition 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010690 paraffinic oil Substances 0.000 description 1
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 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 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of rubber materials, and discloses a rubber composition and vulcanized rubber and a preparation method thereof, wherein the composition contains a rubber matrix, a rubber modifier, white carbon black, titanium dioxide, superfine talcum powder, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent; wherein the rubber modifier is L-cysteine, and the rubber matrix is a mixture of butadiene rubber and natural rubber. The rubber composition can obviously improve the processing safety and the vulcanization efficiency of the rubber composition on the premise of ensuring that vulcanized rubber has higher strength and dynamic flexibility.
Description
Technical Field
The invention relates to the field of rubber, in particular to a rubber composition, vulcanized rubber and a preparation method and application thereof.
Background
In recent years, in order to adapt to the development trend of safety, environmental protection and green of automobile tires, white carbon black type non-petroleum resources are increasingly paid attention to in the field of tires because of the characteristics of reducing rolling resistance of the tires, saving fuel consumption of the automobiles and the like, but the white carbon black has a strong surface polarity, so that the dispersion of the white carbon black in a rubber matrix becomes extremely difficult, and therefore, the application of the white carbon black is limited to a certain extent.
Because of the high polarity, the surface of the white carbon black is easy to adsorb zinc oxide, silicon complex zinc is easy to form in the vulcanization process, and the silicon complex zinc cannot activate the accelerator. Thus, the activation of zinc oxide is reduced, which results in hysteresis in vulcanization of rubber, reducing the vulcanization efficiency of rubber in production.
CN104530501a discloses a rubber composition for color tyre sidewall discoloration resistance, the proportion of the rubber composition of the sidewall is based on weight, 100 parts of base rubber, 30-40 parts of active filler, 20-30 parts of coloring filler, 5-7 parts of paraffin oil, 5-7 parts of active agent, 2-3 parts of silane coupling agent, 1-2 parts of light-colored tackifying resin, 4-6 parts of non-polluting anti-aging agent, 1-2 parts of vulcanizing agent, 3-5 parts of accelerator, 3-6 parts of organic colorant and 1-2 parts of ultraviolet absorber. The rubber prepared by the composition has bright color and good color change resistance, the dark color tire sidewall does not have color change phenomenon in strong illumination and damp-heat environment within one year, and the formula has higher tearing resistance and shows excellent color change resistance when used in severe environment of strong illumination and damp-heat.
CN104311918a discloses a rubber composition for the side wall part of a run-flat tire of a car, the raw materials comprise, by weight, 10-30 parts of natural rubber, 70-90 parts of high cis polybutadiene composite rubber, 20-50 parts of carbon black, 20-40 parts of white carbon black, 1.0-3.0 parts of stearic acid and 1.0-5.0 parts of zinc oxide; wherein the content of 1, 2-polybutadiene in the high cis-polybutadiene composite rubber is 1-10%. The rubber prepared by the composition can improve the safety performance of a vehicle during running, and reduce or eliminate traffic accidents caused by puncture and explosion of tires.
However, in the prior art, the dispersibility of the white carbon black is improved by adding a silane coupling agent Si75 and the like into the white carbon black, and Si75 and the like are sulfur-containing compounds, so that the process control requirement is high in the high-temperature mixing process, and the scorching is possibly caused by improper control, so that the overall performance of the composite material is affected. Si75 and the like are prone to ethanol during processing, and the presence of ethanol presents a potential safety hazard to tires.
CN109384964a discloses a rubber composition for tire sidewall, which comprises a rubber matrix, a rubber modifier, white carbon black, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent, wherein the rubber modifier is a maleic acid monomer, and the rubber matrix is a mixture of butadiene rubber and natural rubber. The rubber prepared by the composition has the advantages of high strength, low rolling resistance and good dynamic flexibility, and the vulcanized rubber formed by the composition can be used for tire sidewalls. But the composition generally exhibits in terms of vulcanization efficiency.
When the rubber formula containing the white carbon black cannot be fully satisfied and used as the sidewall rubber in the prior art, the rubber formula has good processing safety and high vulcanization efficiency on the premise of ensuring higher strength and dynamic flexibility.
Disclosure of Invention
The invention aims to solve the problem that the strength, dynamic flexibility, processing safety and vulcanization efficiency of the rubber for the side wall containing white carbon black cannot be simultaneously met in the prior art, and provides a rubber composition which can obviously improve the processing safety and vulcanization efficiency of the rubber composition on the premise that the vulcanized rubber has higher strength and dynamic flexibility.
In order to achieve the above object, a first aspect of the present invention provides a rubber composition, which is characterized in that the composition comprises a rubber matrix, a rubber modifier, white carbon black, titanium pigment, ultrafine talcum powder, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent; wherein the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber.
In a second aspect, the present invention provides a process for producing a vulcanized rubber, the process comprising:
(1) Carrying out first mixing on the component A containing the rubber matrix and the rubber modifier to obtain a section of master batch;
(2) The first-stage masterbatch is subjected to second mixing with a component B containing white carbon black, titanium dioxide, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain a second-stage masterbatch;
(3) Thirdly, mixing the two-stage masterbatch with a component C containing an accelerator and a vulcanizing agent to obtain final rubber;
(4) Vulcanizing the final rubber mixture;
the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber.
In a third aspect, the present invention provides a vulcanized rubber prepared by the above method.
A fourth aspect of the present invention provides the use of the above-described vulcanizate in a tire sidewall.
The rubber composition and vulcanized rubber provided by the invention, and the preparation method and application thereof have the following beneficial effects:
The rubber composition provided by the invention can obviously improve the processing safety and the vulcanization efficiency of the rubber composition on the premise of keeping the vulcanized rubber to have higher strength and dynamic flexibility.
In the method for preparing vulcanized rubber, the rubber compound is obtained by adopting the steps of feeding and multi-section mixing, and then vulcanization is carried out, so that the bridge effect of the rubber modifier in the rubber matrix and the white carbon black can be better exerted, the dispersion of the white carbon black in the rubber matrix is facilitated, the processing safety and the vulcanization efficiency of the rubber material are improved, and the obtained vulcanized rubber has better strength and dynamic flexibility.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
The first aspect of the invention provides a rubber composition, which is characterized in that the composition contains a rubber matrix, a rubber modifier, white carbon black, titanium white, superfine talcum powder, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent; wherein the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber.
In the invention, butadiene rubber and natural rubber are adopted as rubber matrixes, L-cysteine is adopted as a modifier, and white carbon black, titanium pigment, superfine talcum powder, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent are used in a matching manner, so that the dispersibility of the white carbon black and the like in the rubber matrixes can be improved, and the processing safety and the vulcanizing efficiency of the rubber composition can be obviously improved on the premise that the vulcanized rubber prepared from the composition has higher strength and dynamic flexibility.
According to the present invention, the content of natural rubber in the rubber matrix is 40 to 60 parts by weight and the content of butadiene rubber is 40 to 60 parts by weight with respect to 100 parts by weight of the rubber matrix.
In the present invention, the natural rubber may be a natural rubber of a conventional type in the art, for example, SMR-20.
According to the invention, the cis-1, 4-structure content in the butadiene rubber is 90-99 wt.%.
According to the invention, the content of the rubber modifier is 8-15 parts by weight, the content of the white carbon black is 40-60 parts by weight, the content of the titanium pigment is 10-30 parts by weight, the content of the superfine talcum powder is 10-20 parts by weight, the content of the activating agent is 5-10 parts by weight, the content of the anti-aging agent is 1-3 parts by weight, the content of the softening agent is 5-15 parts by weight, the content of the accelerator is 1-5 parts by weight, and the content of the vulcanizing agent is 0.5-4 parts by weight, relative to 100 parts by weight of the rubber substrate.
In the invention, when the amount of each component in the rubber composition satisfies the above range, the composition can be enabled to remarkably improve the processing safety and vulcanization effect of the rubber composition on the premise of keeping the vulcanized rubber prepared from the composition to have higher strength and dynamic flexibility.
Further, relative to 100 parts by weight of the rubber matrix, the content of the rubber modifier is 10-14 parts by weight, the content of the white carbon black is 45-55 parts by weight, the content of the titanium pigment is 10-20 parts by weight, the content of the superfine talcum powder is 10-20 parts by weight, the content of the activating agent is 5-10 parts by weight, the content of the anti-aging agent is 1.5-3 parts by weight, the content of the softening agent is 10-13 parts by weight, the content of the accelerator is 2-4 parts by weight, and the content of the vulcanizing agent is 1-3 parts by weight.
According to the invention, the white carbon black is gas phase white carbon black and/or precipitation white carbon black, preferably precipitation white carbon black; more preferably, the nitrogen adsorption specific surface area of the white carbon black is 10-200m 2/g. Specifically, the white carbon black is 165GR (rotia, france).
According to the invention, the titanium dioxide content in the titanium dioxide is more than 98% by weight, preferably the titanium dioxide content in the titanium dioxide is 99-100% by weight.
According to the present invention, the activator is selected from at least one of a mixture of a metal oxide and a fatty acid, a fatty acid metal soap salt, and zinc borate. The metal oxide is preferably zinc oxide and/or magnesium oxide; the fatty acid is preferably stearic acid; the fatty acid metal soap salt is zinc stearate.
In one specific embodiment of the invention, the activator is zinc oxide and stearic acid, wherein the zinc oxide content is 3-5 parts by weight, and the stearic acid content is 2-5 parts by weight.
According to the present invention, the accelerator is selected from at least one of a sulfenamide accelerator, a thiazole accelerator, a thiuram accelerator, and a guanidine accelerator.
In the present invention, preferably, the accelerator is selected from the group consisting of N-t-butyl-2-benzothiazole sulfenamide (accelerator TBBS) and/or diphenyl guanidine (accelerator D).
In one embodiment of the present invention, the accelerator includes N-t-butyl-2-benzothiazole sulfenamide (accelerator TBBS) and diphenyl guanidine (accelerator D), wherein the N-t-butyl-2-benzothiazole sulfenamide is contained in an amount of 1 to 2 parts by weight and the diphenyl guanidine is contained in an amount of 2 to 3 parts by weight.
According to the present invention, the antioxidant is at least one selected from the group consisting of amine antioxidants, quinoline antioxidants and benzimidazole antioxidants. For example, the antioxidant is N- (1, 3-dimethyl) butyl-N' -phenyl-p-phenylenediamine (antioxidant 4020).
According to the present invention, the softener is selected from at least one of aromatic oil, paraffinic oil, naphthenic oil, petroleum resin, and polyethylene glycol. The aromatic oil may be, for example, aromatic oil TDAEV500,500.
According to the invention, the vulcanizing agent is a sulfur donor. In the present invention, the sulfur donor means a substance capable of supplying sulfur. Preferably, the sulfur donor is selected from at least one of insoluble sulfur, soluble sulfur and oil-filled sulfur. For example, the vulcanizing agent IS ordinary sulfur S, oil-filled insoluble sulfur IS, and the like.
In a second aspect, the present invention provides a process for producing a vulcanized rubber, characterized in that it comprises:
(1) Carrying out first mixing on the component A containing the rubber matrix and the rubber modifier to obtain a section of master batch;
(2) The first-stage masterbatch is subjected to second mixing with a component B containing white carbon black, titanium dioxide, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain a second-stage masterbatch;
(3) Thirdly, mixing the two-stage masterbatch with a component C containing an accelerator and a vulcanizing agent to obtain final rubber;
(4) Vulcanizing the final rubber mixture;
the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber.
The raw materials for preparing the vulcanized rubber in the second aspect of the present invention adopt the composition described in the foregoing first aspect of the present invention, and the component a, the component B and the component C referred to in the second aspect together form the rubber composition described in the first aspect of the present invention, and thus, the kinds of raw material compositions in the second aspect of the present invention are all exactly the same as those described in the first aspect of the present invention, and the present invention is not repeated in the second aspect, and the person skilled in the art should not understand the limitation of the present invention.
According to the method for preparing vulcanized rubber, disclosed by the invention, the rubber compound is obtained by adopting the steps of feeding and multi-section mixing, and then vulcanization is carried out, so that the bridge effect of the rubber modifier in the rubber matrix and the white carbon black can be better exerted, the dispersion of the white carbon black in the rubber matrix is facilitated, the processing safety and the vulcanization efficiency of the rubber material are improved, and the obtained vulcanized rubber has better strength and dynamic flexibility.
Specifically, the component A containing the rubber matrix and the rubber modifier is subjected to first mixing to obtain a section of master batch, and then the subsequent process steps of the invention are carried out, so that the obtained vulcanized rubber has more excellent performances such as strength, dynamic flexibility and the like.
According to the present invention, the content of natural rubber in the rubber matrix is 40 to 60 parts by weight and the content of butadiene rubber is 40 to 60 parts by weight with respect to 100 parts by weight of the rubber matrix.
In the present invention, the natural rubber may be a natural rubber of a conventional type in the art, for example, SMR-20.
According to the invention, the cis-1, 4-structure content in the butadiene rubber is 90-99 wt.%.
According to the invention, the content of the rubber modifier is 8-15 parts by weight, the content of the white carbon black is 40-60 parts by weight, the content of the titanium pigment is 10-30 parts by weight, the content of the superfine talcum powder is 10-20 parts by weight, the content of the activating agent is 5-10 parts by weight, the content of the anti-aging agent is 1-3 parts by weight, the content of the softening agent is 5-15 parts by weight, the content of the accelerator is 1-5 parts by weight, and the content of the vulcanizing agent is 0.5-4 parts by weight, relative to 100 parts by weight of the rubber substrate.
In the present invention, the mixing may be carried out in mixing equipment conventional in the art, such as an open mill and/or an internal mixer, preferably an internal mixer.
According to the present invention, the conditions of the first kneading include: the first mixing temperature is 80-120 ℃, and the first mixing time is 1-5min.
According to the present invention, the conditions for the second kneading include: the second mixing temperature is 100-140 ℃, and the second mixing time is 2-6min.
According to the present invention, the conditions for the third kneading include: the third mixing temperature is not higher than 120 ℃, and the third mixing time is 4-6min.
According to the invention, the vulcanization conditions include: the vulcanization temperature is 150-170 ℃, the vulcanization pressure is 10-20MPa, and the vulcanization time is 20-50min.
In a preferred embodiment of the present invention, the first kneading conditions include: the first mixing temperature is 90-100 ℃, and the first mixing time is 2-3min; preferably, the conditions of the second kneading include: the second mixing temperature is 120-130 ℃, and the second mixing time is 3-5min; preferably, the conditions of the third mixing include: the third mixing temperature is not more than 115 ℃, and the third mixing time is 4-6min; preferably, the vulcanization conditions include: the vulcanization temperature is 150-170 ℃, the vulcanization pressure is 10-20MPa, and the vulcanization time is 30-50min. The rubber compound prepared by adopting the preferred embodiment has better processing safety and vulcanization efficiency, and the vulcanized rubber has better mechanical properties (improved strength and good flexure resistance).
In order to specifically explain the method for producing a vulcanized rubber of the present invention, the following provides a preferred embodiment for explanation:
(1) Placing the rubber matrix in an internal mixer, and plasticating under the conditions that the rotating speed is 50-120rpm, the initial mixing temperature is 70-90 ℃ and the raw rubber plasticating time is 0.1-1 min; then introducing the component A containing the rubber modifier into the internal mixer for first mixing to obtain a section of master batch;
(2) Adding the primary master batch and the component B containing white carbon black, titanium pigment, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent into an internal mixer for secondary mixing, discharging and standing for 3-5 hours to obtain a secondary master batch;
(3) Setting the rotating speed of an internal mixer to be 50-100rpm, setting the initial mixing temperature to be 25-50 ℃, plasticating the two-stage masterbatch for 0.5-1.5min, and adding a component C containing an accelerator and a vulcanizing agent for third mixing to obtain final mixing;
(4) Placing the final rubber into a plate vulcanizing machine for vulcanizing;
the rubber modifier is L-cysteine, and the rubber matrix is a mixture of butadiene rubber and natural rubber.
The pressures used in the present invention are gauge pressure.
A third aspect of the present invention provides a vulcanized rubber prepared by the above method.
A fourth aspect of the present invention provides the use of the above-described vulcanizate in a tire sidewall.
The invention will be described in detail below by way of examples.
Unless otherwise specified, various commercial products used below are commercially available.
The apparatus for preparing vulcanized rubber in the following examples and comparative examples is shown in Table 1.
The test instruments and test conditions of the vulcanized rubbers obtained in examples and comparative examples are shown in Table 2 and Table 3.
The chemical reagents used in the examples and comparative examples are all commercially available and are specifically as follows:
natural rubber: SMR-20, qingdao Sirait International Logistics Co., ltd;
Butadiene rubber: BR9000, a yankee petrochemical product in which the content of cis 1, 4-structure is 97.8% by weight;
white carbon black: 165GR, french Rodiola, nitrogen adsorption specific surface area 170m 2/g;
Titanium white powder: titanium dioxide content 98 wt%, medium chemical industry limited;
superfine talcum powder: mesh number 3000 mesh, jinan Yubang chemical Co., ltd;
Rubber modifier: l-cysteine, aba Ding Huaxue reagent company;
softening agent: environment-friendly aromatic oil TDAEV (TDAE for short), xindayang (Ningbo) limited company;
An activating agent: zinc oxide, stearic acid, weifang Hengfeng chemical Co., ltd;
Anti-aging agent: n- (1, 3-dimethylbutyl) -N' -phenyl-p-phenylenediamine (anti-aging agent 4020) Jiangsu san chemical Co., ltd;
vulcanizing agent: sulfur, a constant chemical company in Weifang;
and (3) an accelerator: n-tert-butyl-2-benzothiazole sulfenamide (TBBS), diphenyl guanidine (accelerator D), tetramethylthiuram disulfide (TMTD), shanghai Yongyangzhi chemical technology Co., ltd.
The amounts of the components in the following examples and comparative examples were each 1g per part by weight.
Examples are provided to illustrate the rubber compositions, vulcanizates, and methods of making the same of the present invention.
TABLE 1
| Sequence number | Device name | Model number | Manufacturing factories |
| 1 | Banbury mixer | BR1600 | America Rayleigh Corp |
| 2 | Flat vulcanizing machine | XLB-D400*400*2 | First rubber machinery plant of Shanghai |
TABLE 2
TABLE 3 Table 3
Example 1
The formula of the rubber composition comprises: 60 parts of natural rubber, 40 parts of butadiene rubber, 8 parts of L-cysteine, 40 parts of white carbon black, 30 parts of titanium pigment, 10 parts of superfine talcum powder, 15 parts of TDAE (total dissolved oxygen), 4 parts of zinc oxide, 1 part of stearic acid, 0.5 part of sulfur, 5 parts of TBBS (TBBS) and 1 part of anti-aging agent 4020.
The preparation process of the vulcanized rubber comprises the following steps:
(1) First mixing the rubber matrix and the rubber modifier to obtain a section of master batch; specifically, natural rubber and butadiene rubber are added into an internal mixer, the rotating speed is set to be 80rpm, the raw rubber plasticating temperature is 80 ℃, and the raw rubber plasticating time is 0.5min; adding a rubber modifier into the internal mixer for mixing, wherein the first mixing temperature is 90 ℃, and the first mixing time is 3min, so as to obtain a section of master batch;
(2) Carrying out second mixing on the primary master batch, white carbon black, titanium pigment, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain secondary master batch; specifically, adding white carbon black, titanium white powder, talcum powder, TDAE, zinc oxide, stearic acid and an anti-aging agent 4020 into an internal mixer, carrying out second mixing with the primary master batch for 5min at the second mixing temperature of 120 ℃, discharging and standing for 4 hours to obtain a secondary master batch;
(3) Thirdly, mixing the two-stage masterbatch, an accelerator and a vulcanizing agent to obtain final rubber; specifically, setting the rotation speed of an internal mixer at 80rpm, plasticating the two-stage masterbatch at 40 ℃ for 1min, adding a vulcanizing agent and an accelerator for third mixing, wherein the third mixing temperature is 105 ℃, the third mixing time is 6min, and discharging to obtain final masterbatch;
(4) And (3) putting the final rubber mixture into a plate vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization pressure is 20MPa, and the vulcanization time is 40min, so that the vulcanized rubber sample S1 is prepared.
The vulcanized rubber sample S1 was subjected to a performance test, and the results are shown in Table 4.
Example 2
The formula of the rubber composition comprises: 40 parts of natural rubber, 60 parts of butadiene rubber, 15 parts of L-cysteine, 60 parts of white carbon black, 20 parts of titanium dioxide, 15 parts of superfine talcum powder, 5 parts of TDAE (total dissolved oxygen), 4 parts of zinc oxide, 3 parts of stearic acid, 4 parts of sulfur, 1 part of TMTD (total methyl methacrylate) and 2 parts of anti-aging agent 4020.
The preparation process of the vulcanized rubber comprises the following steps:
(1) First mixing the rubber matrix and the rubber modifier to obtain a section of master batch; specifically, natural rubber and butadiene rubber are added into an internal mixer, the rotating speed is set to be 80rpm, the raw rubber plasticating temperature is 80 ℃, and the raw rubber plasticating time is 0.5min; adding a rubber modifier into the internal mixer for mixing, wherein the first mixing temperature is 95 ℃, and the first mixing time is 2.5min, so as to obtain a section of master batch;
(2) Carrying out second mixing on the primary master batch, white carbon black, titanium pigment, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain secondary master batch; specifically, adding white carbon black, titanium dioxide, superfine talcum powder, TDAE, zinc oxide, stearic acid and an anti-aging agent 4020 into an internal mixer, carrying out second mixing with the primary master batch for 4min at the second mixing temperature of 125 ℃, discharging and standing for 5 hours to obtain a secondary master batch;
(3) Thirdly, mixing the two-stage masterbatch, an accelerator and a vulcanizing agent to obtain final rubber; specifically, setting the rotation speed of an internal mixer at 80rpm, plasticating the two-stage masterbatch at 40 ℃ for 1min, adding a vulcanizing agent and an accelerator for third mixing, wherein the third mixing temperature is 110 ℃, the third mixing time is 5min, and discharging to obtain final masterbatch;
(4) And (3) putting the final rubber mixture into a plate vulcanizing machine for vulcanization, wherein the vulcanization temperature is 170 ℃, the vulcanization pressure is 10MPa, and the vulcanization time is 20min, so as to prepare a vulcanized rubber sample S2.
The vulcanized rubber sample S2 was subjected to a performance test, and the results are shown in Table 4.
Example 3
The formula of the rubber composition comprises: 50 parts of natural rubber, 50 parts of butadiene rubber, 11 parts of L-cysteine, 50 parts of white carbon black, 10 parts of titanium pigment, 20 parts of superfine talcum powder, 10 parts of TDAE (total dissolved oxygen), 3 parts of zinc oxide, 5 parts of stearic acid, 2 parts of sulfur, 1 part of TBBS (TBBS), 2 parts of accelerator D and 3 parts of anti-aging agent 4020.
The preparation process of the vulcanized rubber comprises the following steps:
(1) First mixing the rubber matrix and the rubber modifier to obtain a section of master batch; specifically, natural rubber and butadiene rubber are added into an internal mixer, the rotating speed is set to be 80rpm, the raw rubber plasticating temperature is 80 ℃, and the raw rubber plasticating time is 0.5min; adding a rubber modifier into the internal mixer for mixing, wherein the first mixing temperature is 100 ℃, and the first mixing time is 2min, so as to obtain a section of master batch;
(2) Carrying out second mixing on the primary master batch, white carbon black, titanium pigment, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain secondary master batch; specifically, adding white carbon black, titanium white powder, superfine talcum powder, TDAE, zinc oxide, stearic acid and an anti-aging agent 4020 into an internal mixer, carrying out second mixing with the primary master batch for 3min at the second mixing temperature of 130 ℃, discharging and standing for 4 hours to obtain a secondary master batch;
(3) Thirdly, mixing the two-stage masterbatch, an accelerator and a vulcanizing agent to obtain final rubber; specifically, setting the rotation speed of an internal mixer at 80rpm, plasticating the two-stage masterbatch at 40 ℃ for 1min, adding a vulcanizing agent and an accelerator for third mixing, wherein the third mixing temperature is 115 ℃, the third mixing time is 4min, and discharging to obtain final masterbatch;
(4) And (3) putting the final rubber mixture into a plate vulcanizing machine for vulcanization, wherein the vulcanization temperature is 160 ℃, the vulcanization pressure is 15MPa, and the vulcanization time is 30min, so as to prepare a vulcanized rubber sample S3.
The vulcanized rubber sample S3 was subjected to a performance test, and the results are shown in Table 4.
Example 4
The rubber composition formulation of this example was the same as in example 3, and a vulcanized rubber was prepared by a method similar to that of example 3, except that:
the process for preparing the vulcanizate is similar to that of example 3, except that:
in the process of preparing the primary master batch, the temperature of the first mixing is 110 ℃ and the time is 4.5min;
in the process of preparing the two-stage master batch, the temperature of the second mixing is 140 ℃ and the time is 2min;
in the process of preparing the final rubber mixture, the time of the third mixing is 4min, and the temperature of the third mixing is 120 ℃.
A vulcanized rubber sample S4 was obtained.
The vulcanized rubber sample S4 was subjected to a performance test, and the results are shown in Table 4.
Example 5
The formula of the rubber composition comprises: 55 parts of natural rubber, 45 parts of butadiene rubber, 13 parts of L-cysteine, 55 parts of white carbon black, 15 parts of titanium pigment, 10 parts of superfine talcum powder, 13 parts of TDAE (total dissolved oxygen), 5 parts of zinc oxide, 5 parts of stearic acid, 3 parts of sulfur, 2 parts of TBBS (TBBS), 1.5 parts of accelerator D and 2 parts of anti-aging agent 4020.
The process for preparing the vulcanized rubber was the same as in example 3. A vulcanized rubber sample S5 was obtained.
The vulcanized rubber sample S5 was subjected to a performance test, and the results are shown in Table 4.
Comparative example 1
50 Parts of natural rubber, 50 parts of butadiene rubber, 4 parts of Si69, 50 parts of white carbon black, 10 parts of titanium dioxide, 20 parts of superfine talcum powder, 10 parts of TDAE, 3 parts of zinc oxide, 5 parts of stearic acid, 2 parts of sulfur, 1 part of TBBS, 2 parts of accelerator D and 3 parts of anti-aging agent 4020. The process for preparing the vulcanized rubber was the same as in example 3. Vulcanized rubber sample DS1 was obtained.
The vulcanized rubber sample DS1 was subjected to a performance test, and the results are shown in Table 4.
Comparative example 2
The formula of the rubber composition comprises: 80 parts of natural rubber, 20 parts of butadiene rubber, 5 parts of L-cysteine, 70 parts of white carbon black, 40 parts of titanium pigment, 5 parts of superfine talcum powder, 10 parts of TDAE (total dissolved oxygen), 3 parts of zinc oxide, 5 parts of stearic acid, 2 parts of sulfur, 1 part of TBBS (TBBS), 2 parts of accelerator D and 3 parts of anti-aging agent 4020. The process for preparing the vulcanized rubber was the same as in example 3. Vulcanized rubber sample DS2 was obtained.
The vulcanized rubber sample DS2 was subjected to a performance test, and the results are shown in Table 4.
Comparative example 3
The formula of the rubber composition comprises: 50 parts of natural rubber, 50 parts of butadiene rubber, 11 parts of maleic acid, 50 parts of white carbon black, 10 parts of titanium dioxide, 20 parts of superfine talcum powder, 10 parts of TDAE (total dissolved air) and 3 parts of zinc oxide, 2 parts of stearic acid, 2 parts of sulfur, 1 part of TBBS (TBBS), 2 parts of accelerator D and 3 parts of anti-aging agent 4020.
The process for preparing the vulcanized rubber was the same as in example 3. Vulcanized rubber sample DS3 was obtained.
The vulcanized rubber sample DS3 was subjected to a performance test, and the results are shown in Table 4.
Comparative example 4
The rubber composition formulation of this comparative example was the same as in example 3, and a vulcanized rubber was produced by a method similar to that of example 3, except that:
In the process of preparing the primary master batch, no rubber modifier is added;
And in the process of preparing the second-stage masterbatch, carrying out second mixing on the first-stage masterbatch, the rubber modifier, the white carbon black, the titanium pigment, the superfine talcum powder, the activator, the anti-aging agent and the softener to obtain the second-stage masterbatch.
Vulcanized rubber sample DS4 was obtained.
The vulcanized rubber sample DS4 was subjected to a performance test, and the results are shown in Table 4.
TABLE 4 Table 4
| Sample numbering | S1 | S2 | S3 | S4 | S5 | DS1 | DS2 | DS3 | DS4 |
| Scorch time t10 (min) | 1.90 | 1.87 | 1.98 | 1.76 | 1.95 | 1.02 | 0.67 | 1.62 | 1.38 |
| Vulcanization time t90 (min) | 14.5 | 14 | 15 | 16.7 | 14.6 | 19.8 | 26.7 | 17.4 | 18.7 |
| Breaking strength (MPa) | 13.9 | 13.5 | 14 | 13 | 14.1 | 9.8 | 7.1 | 12.6 | 11.5 |
| Fatigue life (secondary) | 26521 | 26398 | 26785 | 25006 | 26903 | 15034 | 8921 | 18975 | 16458 |
As can be seen from Table 4, the rubber composition of the present invention can provide a better dispersion of the components of the rubber composition in the rubber matrix, which further improves the processing safety and vulcanization efficiency of the rubber compound and provides a vulcanized rubber having a better strength and dynamic flexibility.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (11)
1. A rubber composition for a tire sidewall is characterized in that the composition contains a rubber matrix, a rubber modifier, white carbon black, titanium pigment, superfine talcum powder, an activator, an anti-aging agent, a softener, an accelerator and a vulcanizing agent; wherein the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber;
The rubber modifier comprises, by weight, 10-14 parts of rubber modifier, 45-55 parts of white carbon black, 10-20 parts of titanium pigment, 10-20 parts of ultrafine talcum powder, 5-10 parts of activator, 1.5-3 parts of antioxidant, 10-13 parts of softener, 2-4 parts of accelerator and 1-3 parts of vulcanizing agent relative to 100 parts of rubber matrix;
the accelerator comprises N-tertiary butyl-2-benzothiazole sulfonamide and diphenyl guanidine;
The method for preparing the rubber composition comprises the following steps:
(1) Carrying out first mixing on the component A containing the rubber matrix and the rubber modifier to obtain a section of master batch;
(2) The first-stage masterbatch is subjected to second mixing with a component B containing white carbon black, titanium dioxide, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain a second-stage masterbatch;
(3) Thirdly, mixing the two-stage masterbatch with a component C containing an accelerator and a vulcanizing agent to obtain final rubber;
(4) And vulcanizing the final rubber mixture.
2. The rubber composition according to claim 1, wherein the content of natural rubber in the rubber matrix is 40 to 60 parts by weight and the content of butadiene rubber is 40 to 60 parts by weight with respect to 100 parts by weight of the rubber matrix.
3. The rubber composition according to claim 2, wherein the cis-1, 4-structure content in the butadiene rubber is 90 to 99% by weight.
4. The rubber composition according to claim 1 or 2, wherein the white carbon black has a nitrogen adsorption specific surface area of 10 to 200m 2/g;
And/or the titanium dioxide content in the titanium dioxide is greater than 98 wt%;
and/or the mesh number of the superfine talcum powder is 2500-3000 mesh;
And/or the activator is selected from at least one of a mixture of a metal oxide and a fatty acid, a fatty acid metal soap salt, and zinc borate.
5. The rubber composition according to claim 1 or 2, wherein the anti-aging agent is selected from at least one of an amine-based anti-aging agent, a quinoline-based anti-aging agent and a benzimidazole-based anti-aging agent;
And/or the softener is selected from at least one of aromatic oil, paraffin oil, naphthenic oil, petroleum resin and polyethylene glycol;
and/or the vulcanizing agent is a sulfur donor.
6. A process for preparing a vulcanized rubber, comprising:
(1) Carrying out first mixing on the component A containing the rubber matrix and the rubber modifier to obtain a section of master batch;
(2) The first-stage masterbatch is subjected to second mixing with a component B containing white carbon black, titanium dioxide, superfine talcum powder, an activating agent, an anti-aging agent and a softening agent to obtain a second-stage masterbatch;
(3) Thirdly, mixing the two-stage masterbatch with a component C containing an accelerator and a vulcanizing agent to obtain final rubber;
(4) Vulcanizing the final rubber mixture;
the rubber modifier is L-cysteine, and the rubber matrix is butadiene rubber and natural rubber;
The rubber modifier comprises, by weight, 10-14 parts of rubber modifier, 45-55 parts of white carbon black, 10-20 parts of titanium pigment, 10-20 parts of ultrafine talcum powder, 5-10 parts of activator, 1.5-3 parts of antioxidant, 10-13 parts of softener, 2-4 parts of accelerator and 1-3 parts of vulcanizing agent relative to 100 parts of rubber matrix;
the accelerator comprises N-tertiary butyl-2-benzothiazole sulfonamide and diphenyl guanidine.
7. The method according to claim 6, wherein the content of natural rubber in the rubber matrix is 40 to 60 parts by weight and the content of butadiene rubber is 40 to 60 parts by weight with respect to 100 parts by weight of the rubber matrix.
8. The method according to claim 7, wherein the cis 1, 4-structure is contained in the butadiene rubber in an amount of 90 to 99% by weight.
9. The method of any of claims 6-8, wherein the conditions of the first mixing include: the first mixing temperature is 80-120 ℃, and the first mixing time is 1-5min;
And/or, the conditions of the second mixing include: the second mixing temperature is 100-140 ℃, and the second mixing time is 2-6min;
And/or, the conditions of the third mixing include: the third mixing temperature is not more than 120 ℃, and the third mixing time is 4-6min;
And/or, the vulcanization conditions include: the vulcanization temperature is 150-170 ℃, the vulcanization pressure is 10-20MPa, and the vulcanization time is 20-50min.
10. Vulcanized rubber prepared by the process of any one of claims 6-9.
11. Use of the vulcanized rubber of claim 10 in a tire sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977074.0A CN115716940B (en) | 2021-08-24 | 2021-08-24 | Rubber composition, vulcanized rubber, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977074.0A CN115716940B (en) | 2021-08-24 | 2021-08-24 | Rubber composition, vulcanized rubber, preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115716940A CN115716940A (en) | 2023-02-28 |
| CN115716940B true CN115716940B (en) | 2024-05-07 |
Family
ID=85253640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110977074.0A Active CN115716940B (en) | 2021-08-24 | 2021-08-24 | Rubber composition, vulcanized rubber, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115716940B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358415A (en) * | 2012-03-28 | 2013-10-23 | 北京安达信自动化科技有限公司 | Energy-conserved rubber mixing method and combined equipment using same |
| CN108239306A (en) * | 2017-12-11 | 2018-07-03 | 山东玲珑轮胎股份有限公司 | Tire sidewall rubber composite material and preparation method thereof |
| CN109384964A (en) * | 2017-08-03 | 2019-02-26 | 中国石油化工股份有限公司 | For the rubber composition on tire sidewall and vulcanized rubber and its preparation method and application |
| WO2020011003A1 (en) * | 2018-07-13 | 2020-01-16 | 杭州星庐科技有限公司 | Rubber composition, processing method therefor, rubber product using rubber composition, and production method therefor |
| CN112239573A (en) * | 2019-07-19 | 2021-01-19 | 中国石油化工股份有限公司 | Rubber composition for wear-resistant sole, vulcanized rubber, and preparation method and application thereof |
-
2021
- 2021-08-24 CN CN202110977074.0A patent/CN115716940B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358415A (en) * | 2012-03-28 | 2013-10-23 | 北京安达信自动化科技有限公司 | Energy-conserved rubber mixing method and combined equipment using same |
| CN109384964A (en) * | 2017-08-03 | 2019-02-26 | 中国石油化工股份有限公司 | For the rubber composition on tire sidewall and vulcanized rubber and its preparation method and application |
| CN108239306A (en) * | 2017-12-11 | 2018-07-03 | 山东玲珑轮胎股份有限公司 | Tire sidewall rubber composite material and preparation method thereof |
| WO2020011003A1 (en) * | 2018-07-13 | 2020-01-16 | 杭州星庐科技有限公司 | Rubber composition, processing method therefor, rubber product using rubber composition, and production method therefor |
| CN112239573A (en) * | 2019-07-19 | 2021-01-19 | 中国石油化工股份有限公司 | Rubber composition for wear-resistant sole, vulcanized rubber, and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115716940A (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109384965B (en) | Rubber composition for tire side wall of tire, vulcanized rubber, and preparation method and application thereof | |
| CN109181027B (en) | High-performance tire tread rubber and preparation method thereof | |
| CN107964138B (en) | Application of mercapto acid monomer, rubber composition, vulcanized rubber and preparation method thereof | |
| CN107641228B (en) | Use of organosilanes and rubber compositions and vulcanizates and process for their preparation | |
| US9512305B2 (en) | Rubber composition for tires, and pneumatic tire | |
| CN107955232B (en) | Application of maleic acid monomer, rubber composition, vulcanized rubber and preparation method thereof | |
| CN109929149B (en) | Rubber composition for tire side wall of tire, vulcanized rubber, and preparation method and application thereof | |
| WO2017145480A1 (en) | Rubber composition and pneumatic tire | |
| EP1544243A1 (en) | Tire component, and tire with such component, of a rubber composition which contains a combination of soybean oil and starch/plasticizer composite | |
| CN109929160B (en) | Application of organosilane coupling agent, rubber composition, vulcanized rubber and preparation method and application thereof | |
| CN109929159B (en) | Rubber composition and vulcanized rubber for tire tread as well as preparation method and application of rubber composition and vulcanized rubber | |
| CN111533967B (en) | Rubber sole and preparation method thereof | |
| CN109384964B (en) | Rubber composition for tire side wall of tire, vulcanized rubber, and preparation method and application thereof | |
| CN107641219B (en) | Use of organosilanes and rubber compositions and vulcanizates and process for their preparation | |
| CN109384966A (en) | For the rubber composition on tire sidewall and vulcanized rubber and its preparation method and application | |
| CN111117021A (en) | Rubber composition based on solution-polymerized styrene-butadiene, vulcanized rubber, and preparation method and application thereof | |
| CN115716940B (en) | Rubber composition, vulcanized rubber, preparation method and application thereof | |
| CN109929148B (en) | Rubber composition for tire side wall of tire, vulcanized rubber, and preparation method and application thereof | |
| CN112778590B (en) | Rubber composition, preparation method and application thereof, rubber composition for tire treads and preparation method thereof | |
| CN108003408B (en) | Vulcanized rubber and preparation method and application thereof | |
| CN112778591B (en) | Rubber composition, preparation method and application thereof, rubber composition for tire treads and preparation method thereof | |
| CN115716951B (en) | Rubber composition for tread, vulcanized rubber, preparation method and application thereof | |
| CN114149624B (en) | Rubber composition for light tire sidewall and application thereof, vulcanized rubber and preparation method and application thereof | |
| CN114437415B (en) | Rubber composition for light tire sidewall and application thereof, vulcanized rubber and preparation method and application thereof | |
| CN109384963B (en) | Rubber composition for tire side wall of tire, vulcanized rubber, and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |