CN101186727B - Rubber composition for tire tread of high-speed racing car - Google Patents
Rubber composition for tire tread of high-speed racing car Download PDFInfo
- Publication number
- CN101186727B CN101186727B CN2007101877523A CN200710187752A CN101186727B CN 101186727 B CN101186727 B CN 101186727B CN 2007101877523 A CN2007101877523 A CN 2007101877523A CN 200710187752 A CN200710187752 A CN 200710187752A CN 101186727 B CN101186727 B CN 101186727B
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- CN
- China
- Prior art keywords
- weight
- carbon black
- rubber composition
- rubber
- weight parts
- 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.)
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Classifications
-
- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- 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
-
- 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
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/04—Tyres specially adapted for particular applications for road vehicles, e.g. passenger cars
Abstract
The invention provides a rubber composition for the tire surface of a tire for racing. The composition is provided with 100 to 200 weight portions of carbon blacks relative to 100 weight portions of raw rubber. The carbon black consists of 5 to 90 weight portions of carbon black whose iodine (I<2>) absorption quantity is 130 to 250mg/g and DBP oil absorption quantity is 120 to 140ml/g, and 10 to 95 weight portions of carbon black whose iodine (I<2>) absorption quantity is 250 to 400mg/g and DBP oil absorption quantity is 100 to 140ml/g. the invention can increase the traction performance and even increase the durability by combining two carbon blacks whose particle sizes are different with each other.
Description
Technical field
The present invention relates to the rubber composition for tire tread of high-speed racing car, provide and on dry pavement, can improve the rubber combination of grabbing ground (Grip) performance especially.
Background technology
The rubber composition for tire tread of high-speed racing car uses the little carbon black of particle diameter to improve electrothermal calefactive rate usually, thereby improves the earth-catching property on dry pavement.
And based on such notion, people attempt making the little sooty addition of particle diameter more than the addition in the general rubber composition for tire tread so that the raising maximization of performance.
Yet, when increasing the little sooty addition of particle diameter like this, earth-catching property when braking and manipulation (Handling) improves, and exists but then owing to persistent fever increases tyres durable performance and the remarkable shortcoming that descends of abrasion resistance that makes in travelling.
In addition, as the method that is used to improve the earth-catching property on the dry pavement, following technical scheme is arranged: by a large amount of second-order transition temperatures (Tg) that use the crude rubber that contains big weight phenylethylene composition to improve rubber in rubber composition for tire tread, thereby increase the dynamic loss factor (Tan δ) on the road surface, the tyres durable performance that the increase of the heating in travelling causes but this still can not be avoided and the decline of abrasion resistance.
Korean Patent Publication No. relates to the racing tire tread rubber composition 2005-32414 number, more specifically relate to use the little and novel carbon that structure is flourishing of size of particles make low temperature under damping force and aging after the increase of physicals maintenance energy, thereby the improved racing tire tread rubber composition of abrasion resistance, and the sooty iodine (I that the place of being somebody's turn to do uses
2) adsorptive capacity is 170～190g/kg, surface activity is-4～-10, thereby can not expect to improve significantly earth-catching property.
Summary of the invention
Therefore, the present invention is intended to remedy this shortcoming of earth-catching property that is used in the conventional art improve on the dry pavement as mentioned above, the rubber composition for tire tread of the high-speed racing car that its purpose is to provide following: by mixing use with in the past carbon black more in the past than particle diameter was little and the employed sooty particle diameter of the tyre surface high-speed racing car that structure is flourishing is littler new-type carbon black, thereby significantly increase the dynamic loss factor (Tan δ) when braking on the road surface, and be reduced to minimum by the increase that makes the dynamic loss factor when travelling, can guarantee enlarging markedly of earth-catching property and keeping of weather resistance.
Embodiment
To achieve these goals, the invention is characterized in, in common racing tire rubber composition for tire tread,, use total carbon black of 100～200 weight parts with respect to crude rubber 100 weight parts, this total carbon black by 5 weight %～90 weight %, iodine (I
2) adsorptive capacity be 130～250mg/g and DBP oil number be the carbon black of 120～140ml/100g and 10 weight %～95 weight %, iodine (I
2) adsorptive capacity is that 250～400mg/g and DBP oil number are that the carbon black of 100～140ml/100g constitutes.
It is as follows below to be described in more detail the present invention.
Weighting agent of the present invention two kinds of carbon blacks that particle diameter is different mix use, and specifically, with respect to total carbon black of crude rubber 100 weight parts use 100～200 weight parts, this total carbon black is by the iodine (I of 5 weight %～90 weight %
2) adsorptive capacity is that 130～250mg/g and DBP oil number are the carbon black of 120～140ml/100g and the iodine (I of 10 weight %～95 weight %
2) adsorptive capacity is that 250～400mg/g and DBP oil number are that the carbon black of 100～140ml/100g constitutes.
Above-mentioned iodine (I
2) adsorptive capacity is that 250～400mg/g and DBP oil number are that it has little effect when using with less than 10 weight % for the carbon black of 100～140ml/100g, and when surpassing 95 weight %, dynamic loss factor during braking (Tan δ) significantly increases, exist the dynamic loss factor when travelling also significantly to increase but then, owing to the excessive heating in travelling makes the sharply shortcoming of decline of endurance quality.
In addition, when using 5 weight %～90 weight %, above-mentioned iodine (I
2) adsorptive capacity is 130～250mg/g and DBP oil number when being the carbon black of 120～140ml/100g, if less than 5 weight % then its have little effect, in addition, if surpass 90 weight % then have the shortcoming of the dynamic loss factor in the time of can't enlarging markedly braking.
In addition, with respect to crude rubber 100 weight parts, the final sooty total content that is comprised is 100～200 weight parts, if less than 100 weight parts, the dynamic loss factor when then braking is enough not big, therefore the raising of earth-catching property has just had limit, if surpass 200 weight parts then have the shortcoming that the dynamic loss factor is excessive, endurance quality sharply descends when travelling.
To have as mentioned above different particle diameter two or more carbon blacks, be that the different carbon black of iodine absorption number mixes and when filling, the carbon that particle is little aligns between the big carbon of particle, therefore in travelling apply low relatively external stress the time suppress heating, increase heating during the relative big external stress of braking applying when driving, can guarantee the increase of the earth-catching property that the present invention is desired and keeping of endurance quality thus.
In addition, the rubber composition for tire tread of racing tire of the present invention, synthetic rubber more than a kind is mixed as crude rubber, specifically by 50～100 weight parts, styrene content be the emulsion polymerization styrene butadiene rubbers of 35～45 weight % and 1～50 weight part, the bonded styrene content is that contents of ethylene in 20～25 weight % and the divinyl is that solution styrene-divinyl rubber of 60～70 weight % constitutes.
In addition, with respect to crude rubber 100 weight parts, composition of the present invention preferably comprises the treated oil that contains fragrant wet goods of 50～150 weight parts.
In addition, except that aforesaid component, rubber combination of the present invention can also contain employed Synergist S-421 95 in the common rubber combination, vulcanizing agent and other additive, and this is self-evident.
As shown in the following Table 1, be described in more detail effect of the present invention by embodiment and comparative example.
[table 1]
The concrete property of the composition that uses is as follows in the above-mentioned table 1.
SBR-1: the bonded styrene content is the emulsion polymerization styrene butadiene rubbers (containing treated oil 37.5 weight parts) of 35～45 weight %
SBR-2: the bonded styrene content be 20～25 weight %, contents of ethylene is solution styrene-divinyl rubber (containing treated oil 37.5 weight parts) of 60～70 weight % in the divinyl
Carbon black-1: iodine (I
2) adsorptive capacity 130～250mg/g and DBP oil number 120～140ml/100g.
Carbon black-2: iodine (I
2) adsorptive capacity 250～400mg/g and DBP oil number 100～140ml/100g.
To the following mensuration physicals of being made by the foregoing description and comparative example of tread rubber composition, it the results are shown in following table 2.
Hardness: be the value of measuring down in room temperature (25 ℃) with Shore A sclerometer, this value is big more mean firm relatively more.
20 ℃ of Tan δ: be the value of the dynamic loss factor measured with the Flexometer that GABO society makes, the big more then braking ability on dry pavement of this value is excellent more.
60 ℃ of Tan δ: be the value of the dynamic loss factor measured with the Flexometer that GABO society makes, the heating that this value is more little in then travelling is few more, and endurance quality is excellent more.
Heating (Delta T): be the actual calorific value of measuring with the heat run machine of MTS society of the rubber for dynamic repeated deformation.
[table 2]
Shown in the result of above-mentioned table 2, by rubber combination braking, weather resistance and the heat generation characteristic excellence among the embodiment of the present invention's manufacturing, relative therewith, contain a kind of sooty comparative example 1 braking and descend, the height when travelling though comparative example 2 brakings are excellent generates heat and weather resistance decline.
In addition, make actual drag racing car tire with the tread rubber composition that the foregoing description and comparative example are made, to braking ability on the dry pavement and (lap time: 10 all used time/10 around the competition field) estimate, be shown in following table 3 of average individual pen time.
Make the specification of tire: 225/45ZR17 Z211
Braking ability on the dry pavement is benchmark exponential representation with comparative example 1, and the big more braking ability of this value is excellent more.
The average individual pen time: 10 all used time/10 around the competition field; The index that can confirm earth-catching property and weather resistance be the time short more grab excellent more with endurance quality.
[table 3]
As the result of above-mentioned table 3 as can be known, by with styrene butadiene rubbers as crude rubber, and two kinds of carbon blacks that size of particles is different mix and use, and can guarantee the raising of earth-catching property and keeping of endurance quality.
But comparative example 1 and 2 exists earth-catching property and the low shortcoming of weather resistance as can be known.
More than, as describing in detail, as can be known the mutually different two kinds of carbon blacks of size of particles are mixed the rubber combination of the present invention that uses and can guarantee the raising of earth-catching property, even can guarantee keeping of endurance quality simultaneously.
Claims (2)
1. the tread rubber composition of a racing tire, it is characterized in that, in the tread rubber composition of racing tire, crude rubber with respect to 100 weight parts, use with the particle diameter difference, be total carbon black of 100～200 weight parts that mix of two kinds of different carbon blacks of iodine absorption number, this total carbon black is made of first carbon black of 5 weight %～90 weight % and second carbon black of 10 weight %～95 weight %, the described first sooty iodine (I
2) adsorptive capacity is that 130～250mg/g and DBP oil number are 120～140ml/100g, the described second sooty iodine (I
2) adsorptive capacity is that 250～400mg/g and DBP oil number are 100～140ml/100g, described crude rubber by 50～100 weight parts, styrene content be the emulsion polymerization styrene butadiene rubbers of 35～45 weight % and 1～50 weight part, the bonded styrene content is that contents of ethylene in 20～25 weight % and the divinyl is that solution styrene-divinyl rubber of 60～70 weight % constitutes.
2. the tread rubber composition of racing tire according to claim 1 is characterized in that, with respect to the described crude rubber of 100 weight parts, also contains the treated oil of 50～150 weight parts.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0116246 | 2006-11-23 | ||
| KR1020060116246 | 2006-11-23 | ||
| KR1020060116246A KR100798359B1 (en) | 2006-11-23 | 2006-11-23 | Rubber composition for tire tread of high-speed racing car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186727A CN101186727A (en) | 2008-05-28 |
| CN101186727B true CN101186727B (en) | 2010-12-29 |
Family
ID=39219406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101877523A Expired - Fee Related CN101186727B (en) | 2006-11-23 | 2007-11-23 | Rubber composition for tire tread of high-speed racing car |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100798359B1 (en) |
| CN (1) | CN101186727B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101000812B1 (en) * | 2008-12-05 | 2010-12-13 | 한국타이어 주식회사 | Rubber composition for tire tread |
| KR101127069B1 (en) | 2009-09-25 | 2012-03-22 | 한국타이어 주식회사 | Rubber composition for tire and tire manufactured by the same |
| KR101582253B1 (en) * | 2014-04-21 | 2016-01-04 | 한국타이어 주식회사 | Rubber composition for tire tread and tire manufactured by using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663994A (en) * | 2004-03-04 | 2005-09-07 | 住友橡胶工业株式会社 | Rubber composition for tread |
| WO2005111096A1 (en) * | 2004-05-17 | 2005-11-24 | Bridgestone Corporation | Styrene polymer, styrene copolymer, rubber composition, and pneumatic tire |
| CN1854176A (en) * | 2005-03-28 | 2006-11-01 | 住友橡胶工业株式会社 | Radial tire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970021167A (en) * | 1995-10-12 | 1997-05-28 | 홍건희 | Tread rubber composition for large tires |
| KR100635602B1 (en) | 2005-06-10 | 2006-10-18 | 금호타이어 주식회사 | Tire capply rubber composition improved heat built-up property |
| KR100683952B1 (en) * | 2005-06-30 | 2007-02-16 | 금호타이어 주식회사 | Rubber composition for tire capply |
| KR100626140B1 (en) | 2005-07-14 | 2006-09-20 | 한국타이어 주식회사 | Rubber composition for tire tread |
-
2006
- 2006-11-23 KR KR1020060116246A patent/KR100798359B1/en not_active IP Right Cessation
-
2007
- 2007-11-23 CN CN2007101877523A patent/CN101186727B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663994A (en) * | 2004-03-04 | 2005-09-07 | 住友橡胶工业株式会社 | Rubber composition for tread |
| WO2005111096A1 (en) * | 2004-05-17 | 2005-11-24 | Bridgestone Corporation | Styrene polymer, styrene copolymer, rubber composition, and pneumatic tire |
| CN1854176A (en) * | 2005-03-28 | 2006-11-01 | 住友橡胶工业株式会社 | Radial tire |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100798359B1 (en) | 2008-01-28 |
| CN101186727A (en) | 2008-05-28 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20141123 |
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| EXPY | Termination of patent right or utility model |