CN102108140B - Rubber composition for tire tread and tire manufactured using the same - Google Patents
Rubber composition for tire tread and tire manufactured using the same Download PDFInfo
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- CN102108140B CN102108140B CN2010105140452A CN201010514045A CN102108140B CN 102108140 B CN102108140 B CN 102108140B CN 2010105140452 A CN2010105140452 A CN 2010105140452A CN 201010514045 A CN201010514045 A CN 201010514045A CN 102108140 B CN102108140 B CN 102108140B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
- C08K5/40—Thiurams, i.e. compounds containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/43—Compounds containing sulfur bound to nitrogen
- C08K5/44—Sulfenamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
The invention relates to a rubber composition for a tire tread and a tire manufactured using the same, and provides a rubber composition for a tire tread which comprises 100 parts by weight of rubber raw materials containing emulsion polymerized styrene-butadiene rubber, 7-13 parts by weight of environmental friendly softeners, 73-79 parts by weight of fillers, 1.6-1.9 parts by weight of vulcanizing agents, and 0.15-0.25 parts by weight of thiuram vulcanization accelerators. The rubber composition for a tire tread minimizes the release amounts of polycyclic aromatic hydrocarbons (PAH) and nitrosamines, so the composition not only is environmental friendly but also has excellent low fuel consumption, braking performance, and abrasion resistance.
Description
Technical field
The present invention relates to rubber composition for tire tread and with the tire of its manufacturing, relate in particular to the burst size of polycyclic aromatic hydrocarbons and nitrosamine is minimized, therefore not only environmental protection but also the rubber composition for tire tread of outstanding low burnup, braking and wear resistance is arranged and with the tire of its manufacturing.
Background technology
Recently along with the requirement to the high performance of car, the human consumer also requires high performance to tire, and particularly the human consumer requires to have both simultaneously the tire of security (braking) and low burnup.If having, each performance of tire improves the tendency that a kind of performance will make other degradation, therefore it has been generally acknowledged that if use the low rubber of glass transformation temperature (Tg) can improve the wear resistance of tire and hang down burnup, but security (braking) can reduce on the contrary.
Due to this specific character, the key of the rubber combination technical development of tire is to develop the technology that makes the reduced minimum of another kind of performance when improving a kind of performance or improve simultaneously various performances.
Recently in Europe due to the REACH rules, the concern of using for the environmental protection material also rises thereupon.Have multiplely as the tenderizer of the additive of rubber composition for tire tread, usually use aromatic hydrocarbon oil, known this aromatic hydrocarbon oil has advantages of in the refining of rubber combination and in extruding operation and improves processibility and embody best physical properties.
But, along with the development climax of recent Environmental awareness, the polycyclic aromatic hydrocarbons that belongs to aromatic hydrocarbon oil classification (the Polycyclic Aromatic Hydrocarbons that is in the news; PAHs) being drawn into human body probably can be carcinogenic, and therefore European rubber association studies the countermeasure.Concrete use regulation scheme has been formulated in Europe, and deliver and to apply the law to the tenderizer that uses rubber combination from 1 day January in 2010, ban the sale of when above by surpassing 10mg/kg as the PAHs content of control object in the oil of DMSO (dimethyl sulfoxide (DMSO)) extraction process extraction, thus all tiremakers with this as the problem that will solve immediately.
In addition, producing nitrosamine in known vulcanization process in tire production process is also a kind of carcinogenic substance.At present German Government with this nitrosamine as Environmental Regulation scope (TRGS 552), according to different industries, the emission standard of nitrosamine is decided to be 2.5 μ g/m
3Below, observe 1 μ g/m for the rubber industry specified requirement
3Boundary.After this measure of control of Germany, the sign of control also appears wanting in Europe and the U.S., makes the problem for nitrosamine discharge quantitative limitation become together the subject matter of the whole world Rubber Industry overall situation with the relevant problem of polycyclic aromatic hydrocarbons.
For a kind of various regulations that can satisfy above-mentioned relevant environment protection of exploitation simultaneously use have both the security of tire and low burnup tire technology require increasing.
Summary of the invention
The present invention is intended to provide the burst size of a kind of PHAs of making and nitrosamine to minimize, simultaneously not only environmental protection but also the rubber composition for tire tread with outstanding low burnup, braking and wear resistance.
The present invention also is intended to provide a kind of tire that utilizes described rubber composition for tire tread to make.
In order to achieve the above object, according to one embodiment of the present invention the rubber composition for tire tread that is used for comprises: crude rubber 100 weight parts of the styrene-butadiene rubber(SBR) of letex polymerization, environmental protection tenderizer 7 to 13 weight parts, weighting agent 73 to 79 weight parts, vulcanizing agent 1.6 to 1.9 weight parts and thiurams vulcanization accelerator 0.15 to 0.25 weight part.
The styrene-butadiene rubber(SBR) of described letex polymerization can be that styrene content is 20～28 % by weight, and the contents of ethylene that divinyl comprises is more than 18 % by weight, and glass transformation temperature (Tg) is-58～-47 ℃.
Described weighting agent can be that the nitrogen adsorption specific surface area is 70～130m
2The carbon black of/g.
Described tenderizer can be benzo (a) pyrene (Benzo (a) pyrene, C
20H
12), benzo (e) pyrene (Benzo (e) Pyrene, C
20H
12), benzo (b) fluoranthene (Benzo (b) Fluoranthene, C
20H
12), benzo (j) fluoranthene (Benzo (j) Fluoranthene, C
20H
12), benzo (a) anthracene (Benzo (a) Anthracene, C
20H
12), benzo (k) fluoranthene (Benzo (k) Fluoranthene, C
20H
12), bend (Chrysene, C
18H
12) and dibenzo (a, h) anthracene (Dibenzo (a, h) Anthracene, C
20H
12) the content summation less than 10mg/kg, the content of aromatic hydrocarbons component is 15～25 % by weight, the content of naphthenic component is 27～37 % by weight, the content of paraffin class component is 38～58 % by weight, kinetic viscosity is more than 95 ℃.
Described thiurams vulcanization accelerator can be thiuram disulfide (Thiuram Disulfide) the class vulcanization accelerator of boiling point more than 300 ℃.
Described thiuram disulfide class vulcanization accelerator is to select free tetra-benzyl thiram disulfide, curing four (2-ethylhexyl) thiuram (tetrakis (2-ethylhexyl) thiuram disulfide), tetrabenzyl zinc dithiocarbamate (zinc tetrabenzyldithiocarbamate), 1, two (the N of 6-, N-dibenzyl sulfide generation-carbamyl dithio) hexane (1,6-bis (N, N-dibenzylthio-carbamodithio) hexane) and their combination form a kind of in group.
Described rubber composition for tire tread may further include the sulfenamide vulcanization accelerator, and the described thiuram disulfide class vulcanization accelerator that comprises and the weight ratio of described sulfenamide vulcanization accelerator are 0.5～2: 5～9.
Another object of the present invention is to provide the tire that utilizes above-mentioned rubber composition for tire tread to make.
Below, the present invention will be described in more detail.
Described rubber composition for tire tread comprises, contains crude rubber, environmental protection tenderizer, weighting agent, thiurams vulcanization accelerator and the vulcanizing agent of the styrene-butadiene rubber(SBR) of letex polymerization.
Described crude rubber contains the styrene-butadiene rubber(SBR) of letex polymerization.
Common styrene-butadiene rubber(SBR) has the styrene-butadiene rubber(SBR) (E-SBR) of letex polymerization and the styrene-butadiene rubber(SBR) (S-SBR) of solution polymerization.Described E-SBR compares with S-SBR, is unfavorable in wet ground braking although glass transformation temperature (Tg) is low, contents of ethylene is low, is conducive to rolling resistance and wear hardness.
Described E-SBR can be that styrene content is 20～28 % by weight, and contents of ethylene is more than 18 % by weight, and glass transformation temperature is-58～-47 ℃.Described E-SBR can be that weight-average molecular weight is more than 800,000.When using the E-SBR of above-mentioned styrene content, contents of ethylene, glass transformation temperature and weight average molecular weight range, produce beneficial effect at aspects such as burnup performance, wear hardness and braking abilities.
In addition, described E-SBR can contain the TDAE oil (environment-friendly aromatic oil, Treated Distillate Aromatic Extract) of 25～60 weight parts with respect to every 100 weight parts of former rubber mass elastomerics, preferably contains 35～40 weight parts.Described TDAE oil and DAE oil (aromatic hydrocarbon oil, Distillate Aromatic Extract) relatively, because the difference glass transformation temperature of aromatic hydrocarbons component, naphthenic component, paraffin class component is different, produce beneficial effect at aspects such as wear resistance and burnup performances.When described E-SBR contains the TDAE oil of 25～60 weight parts with respect to every 100 weight parts of former rubber mass elastomerics, due to cinnamic impact, make the effect of the environmental protection such as carcinogenic burst size minimizes when can expect to improve the E-SBR flexibility.
Described rubber composition for tire tread contains described environmental protection tenderizer.
Usually, emulsifying agent adds in rubber combination, is handling ease or in order to reduce the hardness of vulcanized rubber in order to give plasticity-to rubber, refers to other oils materials that rubber batching or rubber use when preparing.Environmental protection tenderizer of the present invention refers to the oil that comprises when rubber is prepared burden.
Described environmental protection tenderizer can be benzo (a) pyrene, benzo (e) pyrene, benzo (b) fluoranthene, benzo (j) fluoranthene, benzo (a) anthracene, benzo (k) fluoranthene, bend and dibenzo (a, h) the content summation of anthracene is less than 10mg/kg, the content of aromatic hydrocarbons component is 15～25 % by weight, the content of naphthenic component is 27～37 % by weight, the content of paraffin class component is 38～58 % by weight, and kinetic viscosity is more than 95 ℃.
Described environmental protection tenderizer use is generally used in rubber composition for tire oily as the petroleum-type of tenderizer use, with paraffin class is oily, naphthenic is oily, fragrant same clan wet goods is compared, harmful substance contents is minimum, therefore be also to have the environment protection oil of advantageous feature for the environmental factorss such as carcinogenic possibility of PAHs, owing to being highly purified oil, therefore have the cold property of optimization rubber composition for tire and the characteristics of burnup performance simultaneously.
Optimize the aspect of cold property and burnup performance when consideration improves the processing characteristics of crude rubber, described environmental protection tenderizer preferably uses 7～13 weight parts with respect to every 100 weight parts of crude rubber.
Described weighting agent can contain 73～79 weight parts with respect to described crude rubber 100 weight parts.When using described weighting agent less than 73 weight part, the enhancing physical property that relies on weighting agent descends, and uses when surpassing 79 weight part, can be unfavorable for the processibility of rubber combination.
Above-mentioned weighting agent can be nitrogen adsorption specific surface area (nitrogen surface area per gram, N
2SA) be 70～130m
2The carbon black of/g is preferably 85～100m
2The carbon black of/g, more preferably 90～95m
2The carbon black of/g.The nitrogen adsorption specific surface area of described weighting agent is 70～130m
2During/g, produce beneficial effect at aspects such as wear resistance, processibility, enhancing physical property.
With respect to crude rubber 100 weight parts, preferably contain 1.6～1.9 described vulcanizing agent, have suitable cure efficiency this moment, thereby insensitive to heat, and chemical stability is better.
Above-mentioned vulcanizing agent can use the metal oxides such as sulphur class vulcanizing agent, organo-peroxide, resin curative, magnesium oxide, is preferably sulphur class vulcanizing agent.
Described sulphur class vulcanizing agent can use inorganic sulphide agent and tetramethyl-thiuram disulfide (the tetramethylthiuram disulfide such as powder-sulphur, insoluble sulfur, precipitated sulfur, colloid sulphur, TMTD), the organic sulfurizing agents such as tetraethylthiuram disulfide (tetraethylthiuram disulfide, TETD), dithiodimorpholine (dithiodimorpholine).The primary sulfur that can use that described sulfur vulcanizing agent is concrete maybe can produce the vulcanizing agent of sulphur, such as dithio amine (amine disulfide), polymer sulphur etc.
described organo-peroxide is freely a kind of in the group of lower composition of choosing, and this is organized by benzoyl peroxide, dicumyl peroxide, ditertiary butyl peroxide, tert-butyl peroxide cumyl (tert-butylcumyl peroxide), methylethyl ketone peroxide (methyl ethyl ketone peroxide), Cumene Hydroperoxide 80 (Cumene Hydroperoxide), 2,5-2，5-dimethyl-2，5-di(t-butyl peroxy)2，5-hexane (2,5-Dimethyl-2,5-di (tert-butylperoxy) hexane), 2，5-dimethyl-2，5-dibenzoylperoxy hexane (2,5-Dimethyl-2,5-DibenzoylPeroxy Hexane), 2,5-2，5-dimethyl-2，5-di(t-butyl peroxy)2，5-hexane, two (t-butylperoxy propyl group) benzene (1,3-bis (t-butylperoxypropyl) benzene) of 1,3-, di-tert-butyl peroxide diisopropyl benzene (Di-tert-butylperoxy-diisopropylbenzene), t-butylperoxy benzene (tert-Butyl peroxy benzene), peroxidation 2,4 dichloro benzene formyl (2,4-Dichloro Benzoyl Peroxide), 1,1-di-t-butyl peroxy-3,3, and the 5-trimethicone (1,1-dibutylperoxy-3,3,5-trimethylsiloxane), normal-butyl-4,4-di-t-butyl peroxy valerate (n-butyl-4,4-di-tert butyl peroxy valerate) and their combination form.
The thiurams vulcanization accelerator that can contain 0.15～0.25 weight part for described rubber raw materials 100 weight parts.Thereby the thiurams vulcanization accelerator that contains described scope is the generation of nitrosamine is minimized promote simultaneously vulcanization rate to improve to greatest extent productivity and rubber physical property.
Described thiurams vulcanization accelerator is thiuram disulfide class vulcanization accelerator, can be that boiling point is at (b.p) more than 300 ℃.
Described thiuram disulfide class vulcanization accelerator is to be selected from lower group a kind of, this group is by tetra-benzyl thiram disulfide, curing four (2-ethylhexyl) thiuram (tetrakis (2-ethylhexyl) thiuramdisulfide), tetrabenzyl zinc dithiocarbamate (zinc tetrabenzyldithiocarbamate), 1, two (the N of 6-, N-dibenzyl sulfide generation-carbamyl dithio) hexane (1,6-bis (N, N-dibenzylthio-carbamodithio) hexane) and their combination form.
When using described thiuram disulfide class vulcanization accelerator, make the generation of nitrosamine have good environment protecting aspect minimized in sulfidation.
In order to double the suitable cure efficiency of described rubber composition for tire tread, can also contain the vulcanization accelerator of not generate nitrosamines.
The described vulcanization accelerator of not generate nitrosamines is concrete can be to be selected from lower group a kind of, this group by
N cyclohexyl 2 benzothiazole sulfenamide (N-Cyclohexyl-2-benzothiazolesulfonamide), N tert butyl benzothiazole 2 sulfenamide (N-tert-Butyl-2-benzothiazole-sulfenamide), N，N′-dicyclohexyl-2-benzothiazolesulfenamide (N, N '-dicyclohexyl-2-Benzothiazole sulfenamide), vulkacit H (Hexamethylene tetramine), butyraldehyde-n aniline (n-butyl aldehyde aniline), N, and N '-diphenyl urea (N, N '-Diphenylurea), N, N-diethyl urea (N, N-diethylurea), 1,3-two-ortho-, meta-or p-tolyl guanidine (1,3-Di-o-tolylguanidine), 1,3-diphenylguanidine (1,3-Diphenylguanidine), 1 of two catechol boric acid esters, 3-two-ortho-, meta-or p-tolyl guanidinesalt (dicatechol borate-di-o-tolylguanidinesalt), 1-OTBG o tolylbiguanide (1-(o-Tolyl) biguanide), zinc butyl xanthate (zinc butyl xanthate), zinc isopropyl xanthate (zinc isopropyl xanthate), dibenzothiazyl disulfide (2,2 '-Dibenzo thiazolyl Disulfide), 2-mercaptobenzothiazole (2-mercaptobenzothiazole), the zinc salt of 2-mercaptobenzothiazole and their group that combination forms.
The weight ratio of contained described thiuram disulfide class vulcanization accelerator and described sulfenamide vulcanization accelerator is 0.5～2: 5～9, and preferred weight ratio is 1: 5～8, and more preferably weight ratio is 1: 6.Described thiuram disulfide class vulcanization accelerator and described sulfenamide vulcanization accelerator are with 0.5～2: when 5～9 weight ratio comprised, the generation that both can suppress nitrosamine also can show the outstanding performances in aspect such as low burnup, braking, wear resistance and curing time.
Described rubber composition for tire tread can also contain anti-aging agent.Described anti-aging agent is because of oxygen, the additive that the chain reaction of autoxidation is used to occur in order to stop tire.Described anti-aging agent can use a kind of suitable anti-aging agent that is selected from lower group, and this is organized by amine, phenol, quinoline, imidazoles, carboxylamine metal-salt, and wax and their combination form.
Described amines antioxidants can use and select free N-phenyl-N '-(1, the 3-dimethyl)-Ursol D, N-(1, the 3-dimethylbutyl)-N '-phenyl-Ursol D, N-phenyl-N '-sec.-propyl-Ursol D, N, N '-diphenyl-para-phenylene diamine, N, a kind of in the group that N '-diaryl-p-phenylenediamine, N-phenyl-N '-cyclohexyl Ursol D, N-phenyl-N '-octyl group Ursol D and their combination form.
Described phenol anti-aging agent can use and select 2 of free phenol, 2 '-methylene radical-two (4-methyl-6-tert-butylphenols), 2,2 '-a kind of in group that isobutylidene-two (4,6-xylenols), 2,6 ditertiary butyl p cresol and their combination form.
Described quinoline type antioxidant can use 2,2,4-trimethylammonium-1,2-dihydroquinoline and derivative thereof can use particularly and select free 6-oxyethyl group-2,2,4-trimethylammonium-1,2-dihydroquinoline, 6-anilino-2,2,4-trimethylammonium-1,2-dihydroquinoline, 6-dodecyl-2,2,4-trimethylammonium-1, a kind of in the group that 2-dihydroquinoline and their combination form.
Described anti-aging agent preferably can use and select free N-(1, the 3-dimethylbutyl) (N-(1 for-N-phenyl-Ursol D, 3-Dimethybutyl)-N-phenyl-p-phenylenediamine, 6PPD), N-phenyl-N-sec.-propyl-Ursol D (N-phenyl-N-isopropyl-p-phenylenediamine, 3PPD), 2,2,4-trimethylammonium-1, (Poly (2 for 2-dihydroquinoline polymkeric substance, 2,4-trimethyl-1,2-dihydroquinoline, RD) and the group that forms of their combination in a kind of.
Described anti-aging agent prevents effect except aging, consider to the solubleness of rubber want large, volatility is little, to rubber to have nonactive, when not hindering the condition such as sulfuration, to contain 1～10 weight part with respect to the crude rubber of 100 weight parts.
Described rubber composition for tire tread optionally further contains the various additives such as vulcanization accelerator, coupling agent or tackiness agent.Described various additive is so long as the present invention is normally used just can use, and the present invention is not just giving unnecessary details.
Above-mentioned rubber composition for tire tread, the continuous manufacturing step of two steps that can be by routine prepares.Namely, 110～190 ℃ of top temperatures, be preferably under the high temperature of 130～180 ℃, its heat engine tool is processed or final stage that mixing fs (being called " nonproductive " stage) and cross-link bond system are mixed between, by the temperature lower than 110 ℃, for example carry out the subordinate phase (being called " production " stage) of mechanical treatment under the low temperature of 40～100 ℃, can make in suitable mixing machine and obtain, but the present invention is not limited to this.
Described rubber composition for tire tread is not limited to tyre surface (tyre surface band and tyre surface substrate), can be included in the multiple rubber integrant that consists of tire.As above-mentioned rubber integrant, can enumerate sidewall rubber, sidewall rubber insert, filler in bead core (apex), chafer fabric (chafer), electric wire strip of paper used for sealing or air retaining wall etc.
Tire according to another embodiment of the invention utilizes described rubber composition for tire tread and makes.Utilize described tire tread make the method for tire with composition so long as be used for method that conventional tire makes just can, the present invention repeats no more this.
Described tire can be passenger car tire, contest tire, plane tyre, farm machine tire, off-the-road tyre, truck tyre or bus tire etc.Or described tire can be radial or bias tyre, preferred radial.
Rubber composition for tire tread of the present invention minimizes the burst size of PAHs and nitrosamine, not only environmental protection but also outstanding low burnup, braking and wear resistance are arranged.
Embodiment
Below, embodiments of the invention are elaborated, make those skilled in the art can easily implement the present invention.But the present invention can by various multi-form embodiments, be not limited to these embodiment.
Make embodiment: the manufacturing of rubber combination
Utilize the composition preparation of following table 1 according to the rubber composition for tire tread of embodiment and comparing embodiment.The manufacturing of rubber composition for tire tread has utilized the manufacture method of traditional tire tread rubber.
[table 1] (unit: weight part)
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Embodiment | |
| E-SBR A (1) | 100(137) | - | - | - | - | - |
| E-SBR B (2) | - | 100(137) | 100(137) | 100(137) | 100(137) | 100(137) |
| Weighting agent (3) | 70 | 70 | 70 | 70 | 75 | 75 |
| Oil-A (4) | 10 | - | - | - | - | - |
| Oil-B (5) | - | 10 | 10 | 10 | 10 | 10 |
| Accelerant A (6) | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Accelerant B (7) | 0.1 | 0.1 | - | - | - | - |
| Accelerant C (8) | - | - | 0.1 | 0.2 | 0.2 | 0.2 |
| Sulphur | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 1.8 |
| Zinc oxide | 2 | 2 | 2 | 2 | 2 | 2 |
| Stearic acid | 2 | 2 | 2 | 2 | 2 | 2 |
| Anti-aging agent | 2 | 2 | 2 | 2 | 2 | 2 |
Annotate: the numerical value in the bracket of SBR is the numerical value of oil-containing.
(1) E-SBR A: be that 24 % by weight, the interior contents of ethylene of divinyl are that 18 % by weight, glass transformation temperature contain DAE (Distillate aromatic extract) oil for the letex polymerization styrene butadiene rubbers of-55 to-45 ℃ with styrene content
(2) E-SBR B: the contents of ethylene that is 24 % by weight, divinyl with styrene content is that 18 % by weight, glass transformation temperature contain TDAE (Treated distillate aromatic extract) oil for the letex polymerization styrene butadiene rubbers of-58 to-47 ℃
(3) weighting agent: nitrogen adsorption specific surface area (nitrogen surface area per gram, N
2SA) be 90 to 95m
2The carbon black of/g
(4) Oil-A:PAHs content is that 10mg/kg is above, kinetic viscosity is 91 (195 °F) ℃, and the aromatic hydrocarbons component is that 40 % by weight, naphthenic component are that 30 % by weight and paraffin class component are many cyclophanes oil of 25 % by weight
(5) Oil-B:PAHs content is that 98 (210 °F) ℃, aromatic hydrocarbons component are that 20 % by weight, naphthenic component are that 32 % by weight and paraffin class component are the low oil (Low PAHs Oil) of PAHs content of 48 % by weight less than 10mg/kg, kinetic viscosity
(6) accelerant A: sulfenamide vulcanization accelerator, amine type (Amine Type) are uncle's type (Primary), do not produce the vulcanization accelerator of amine
(7) accelerant B: the thiurams vulcanization accelerator, produce secondary amine (Secondary Amine), B.P is the vulcanization accelerator of 60 to 80 ℃
(8) accelerant C: the thiurams vulcanization accelerator, produce secondary amine (Secondary Amine), B.P is the vulcanization accelerator more than 300 ℃
The characteristic of the promotor in above-mentioned table 1 compares by following table 2.
[table 2]
Rubber combination with proportioning of above-mentioned table 1 is presented at table 3 by following method comparison physical property.
1) braking and burnup performance are to utilize RDS (rheometer, Rheometrics DynamicSpectrometer) to measure 0 ℃ of tan δ and 60 ℃ of tan δ in 0.5% strain, 10Hz, temperature variation (Temp.sweep).0 ℃ of tan δ means braking ability, and comparative example 1 is that the larger expression braking ability of value of index of benchmark is more outstanding.60 ℃ of tan δ mean the rolling resistance performance, and the lower expression burnup of the value of the index take comparative example 1 as benchmark performance is more outstanding.
2) abrasion resistance index is to utilize blue Berne wear testing machine to test, and the larger expression wear resistance of the numerical value take comparative example 1 as benchmark is more outstanding.
3) curing time utilizes rheometer at the curing time t90 of 160 ℃ of pyrometry rubber combinations.T90 (min) is larger, and the curing time of expression rubber is longer, and the less expression curing time of this value is shorter.
[table 3]
Table 3 in reference, the rubber combination of having confirmed embodiment uses crude rubber, weighting agent and vulcanizing agent with best proportioning, therefore and used the environmental protection vulcanization accelerator, obtained not only environmental protection but also improved simultaneously the rubber combination of burnup performance, braking and wear resistance.
Above; describe the preferred embodiments of the present invention in detail, but the claimed interest field of the present invention is not limited to this, has utilized key concept of the present invention; various distortion and improvement that the person of ordinary skill in the field carries out still belong to the interest field of request of the present invention.
Claims (6)
1. rubber composition for tire tread, it is characterized in that, crude rubber 100 weight parts, environmental protection tenderizer 7 to 13 weight parts, weighting agent 73 to 79 weight parts, vulcanizing agent 1.6 to 1.9 weight parts and thiurams vulcanization accelerator 0.15 to 0.25 weight part that comprise the styrene butadiene rubbers that contains letex polymerization
The styrene butadiene rubbers of described letex polymerization is that styrene content is that the contents of ethylene that 20 to 28 % by weight, divinyl comprise is more than 18 % by weight, and glass transformation temperature (Tg) is-58 to-47 ℃,
Described thiurams vulcanization accelerator is thiuram disulfide class vulcanization accelerator, and boiling point is more than 300 ℃.
2. rubber composition for tire tread according to claim 1, is characterized in that, described weighting agent is that the nitrogen adsorption specific surface area is 70 to 130m
2The carbon black of/g.
3. rubber composition for tire tread according to claim 1, is characterized in that, benzo (a) the pyrene C that described environmental protection tenderizer is polycyclic aromatic hydrocarbons
20H
12, benzo (e) pyrene C
20H
12, benzo (b) fluoranthene C
20H
12, benzo (j) fluoranthene C
20H
12, benzo (a) anthracene C
20H
12, benzo (k) fluoranthene C
20H
12,
C
18H
12And dibenzo (a, h) anthracene C
20H
12The content summation less than 10mg/kg, the content of aromatic hydrocarbons component is 15～25 % by weight, the content of naphthenic component is 27～37 % by weight, the content of paraffin class component is 38～58 % by weight, kinetic viscosity is more than 95 ℃.
4. rubber composition for tire tread according to claim 1, it is characterized in that, described thiuram disulfide class vulcanization accelerator is to select free tetra-benzyl thiram disulfide, curing four (2-ethylhexyl) thiuram and their combination to form a kind of in group.
5. rubber composition for tire tread according to claim 1, it is characterized in that, described rubber composition for tire tread further comprises the sulfenamide vulcanization accelerator, and described thiuram disulfide class vulcanization accelerator and described sulfenamide vulcanization accelerator are involved with 0.5 to 2:5 to 9 weight ratio.
6. the tire that adopts claim 1 described rubber composition for tire tread of any one to the claim 5 to make.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090130223A KR101140258B1 (en) | 2009-12-23 | 2009-12-23 | Rubber composition for tire tread and tire manufactured by using the same |
| KR10-2009-0130223 | 2009-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108140A CN102108140A (en) | 2011-06-29 |
| CN102108140B true CN102108140B (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105140452A Expired - Fee Related CN102108140B (en) | 2009-12-23 | 2010-10-21 | Rubber composition for tire tread and tire manufactured using the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101140258B1 (en) |
| CN (1) | CN102108140B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6384568B1 (en) * | 2017-05-16 | 2018-09-05 | 横浜ゴム株式会社 | Pneumatic tire |
| CN108034222A (en) * | 2017-12-19 | 2018-05-15 | 滁州环球聚氨酯科技有限公司 | A kind of polyurethane clad on forklift hub surface |
| CN108892827A (en) * | 2018-07-18 | 2018-11-27 | 长沙市凤英机械科技有限公司 | A kind of low temperature resistant low-hardness rubber and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004007606A1 (en) * | 2002-07-11 | 2004-01-22 | Uniroyal Chemical Company, Inc. | Rubber compositions and methods for improving scorch safety and hysteretic properties of the compositions |
| CN1876702A (en) * | 2005-05-27 | 2006-12-13 | 固特异轮胎和橡胶公司 | Tire with tread comprised of natural rubber and specialized emulsion prepared styrene/butadiene elastomer |
| CN101260204A (en) * | 2007-03-08 | 2008-09-10 | 固特异轮胎和橡胶公司 | Tire with sidewall comprised of emulsion styrene/butadiene rubber, cis 1,4-polyisoprene rubber and cis 1,4-polybutadiene rubber |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709978B1 (en) * | 2005-11-08 | 2007-04-20 | 한국타이어 주식회사 | Rubber composition for snow tire tread |
| KR100771692B1 (en) | 2006-09-28 | 2007-10-31 | 금호타이어 주식회사 | Tire tread composition improved rolling resistant property |
| KR101007983B1 (en) * | 2007-12-04 | 2011-01-14 | 한국타이어 주식회사 | Rubber composition for tire tread of passenger car |
| KR100903990B1 (en) * | 2007-12-04 | 2009-06-22 | 한국타이어 주식회사 | Sustainable Rubber composition for tire tread |
-
2009
- 2009-12-23 KR KR1020090130223A patent/KR101140258B1/en not_active IP Right Cessation
-
2010
- 2010-10-21 CN CN2010105140452A patent/CN102108140B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004007606A1 (en) * | 2002-07-11 | 2004-01-22 | Uniroyal Chemical Company, Inc. | Rubber compositions and methods for improving scorch safety and hysteretic properties of the compositions |
| CN1876702A (en) * | 2005-05-27 | 2006-12-13 | 固特异轮胎和橡胶公司 | Tire with tread comprised of natural rubber and specialized emulsion prepared styrene/butadiene elastomer |
| CN101260204A (en) * | 2007-03-08 | 2008-09-10 | 固特异轮胎和橡胶公司 | Tire with sidewall comprised of emulsion styrene/butadiene rubber, cis 1,4-polyisoprene rubber and cis 1,4-polybutadiene rubber |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110073066A (en) | 2011-06-29 |
| CN102108140A (en) | 2011-06-29 |
| KR101140258B1 (en) | 2012-04-26 |
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