CN101434721A - Rubber composition for tyre tread - Google Patents
Rubber composition for tyre tread Download PDFInfo
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- CN101434721A CN101434721A CNA2008101496278A CN200810149627A CN101434721A CN 101434721 A CN101434721 A CN 101434721A CN A2008101496278 A CNA2008101496278 A CN A2008101496278A CN 200810149627 A CN200810149627 A CN 200810149627A CN 101434721 A CN101434721 A CN 101434721A
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- Prior art keywords
- rubber composition
- rubber
- weight parts
- tackiness agent
- tire tread
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L45/00—Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
- C08L45/02—Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers of coumarone-indene polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L57/00—Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08L57/02—Copolymers of mineral oil hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to rubber composition applied to wheel tread of a wheel; the rubber composition applied to wheel tread of a wheel of the invention contains raw material rubber, adhesive (A) with a softening point of 90-100 DEG C and adhesive (B) with a softening point of 135-150 DEG C. Through the rubber composition, durability of an automobile for racing can be maintained at the same level even when the temperature of the wheel tread goes up to over 100 DEG C when running at high speed on a dry road; besides, earth gripping performance can be improved to an epoch-making degree.
Description
Technical field
The present invention relates to rubber composition for tire tread, in more detail, relate in the tire tread of high-speed racing car, at the rubber composition for tire tread that ground (grip) performance obtains improving of grabbing of dry pavement epoch-makingly.
Background technology
Usually, the rubber composition for tire tread of high-speed racing car improves electrothermal calefactive rate by using the little carbon black of particle diameter, improves the earth-catching property at dry pavement thus.
In addition, based on such notion, make the little sooty addition of particle diameter realize the very big raising of performance more than general rubber composition for tire tread.
Yet when the little sooty addition of particle diameter was increased, the earth-catching property in braking and when operation was improved, but had because tyres durable performance and the wear hardness significantly reduced shortcoming of the heating increase that continues in walking.
On the other hand, as the additive method that is used to improve at the earth-catching property of dry pavement, though have by a large amount of crude rubbers that contain the high-phenylethylene composition that use in rubber composition for tire tread and improve second-order transition temperature (Tg), increase the method for dynamic loss coefficient (Tan δ) thus, but this can't be avoided also increasing the tyres durable performance cause and the reduction of wear hardness because of the heating in the walking on the road surface.
In addition, proposition is useful on the formerly technology of raising at the earth-catching property of dry pavement, as an example, the technology that relates to following new rubber composition for tire tread in openly speciallyying permit communique 2007-4255 number, Korea S is disclosed, promptly, use in the tread rubber composition at tire, contain 1~10 parts by weight of thermoplastic resin (Thermoplasticresin) with respect to crude rubber 100 weight parts, it is 5 hydrocarbon 1~30 weight % that described thermoplastic resin contains carbonatoms, cyclic hydrocarbon 70~98 weight %, aromatic hydrocarbons 1~30 weight %, not only improve in the traction on general road surface thus and also when improving the rainy day in the traction of Slippery road.
Yet, the softening temperature of the thermoplastic resin that uses in described technology formerly is 80~100 ℃, tyre surface sharply reduced because of the softening of resin with the rerum natura of rubber when the tyre surface temperature in the walking rose to more than 100 ℃, thereby forfeiture walking stability, therefore, improve aspect the earth-catching property of high-speed racing car limited.
Summary of the invention
The present invention to be used to improve aforesaid high-speed racing car tire tread and to finish in the conventional art problem of the earth-catching property of dry pavement in order to solve, mix use by 2 kinds of tackiness agents that will have different softening point (Softening point), dynamic loss coefficient (Tan δ) when braking on the road surface is increased epoch-makingly, the increase of the dynamic loss coefficient in when walking is minimized, develop the epoch-making increase of earth-catching property thus and guarantee the technology of keeping of weather resistance.
Other purposes of the present invention and advantage illustrate below, and can be clear and definite by embodiments of the invention.In addition, objects and advantages of the present invention can be by realizing in method shown in the scope required for protection and combination.
Embodiment
It is the tackiness agent (B) that 90~100 ℃ tackiness agent (A) and softening temperature are 135~150 ℃ that rubber composition for tire tread of the present invention contains crude rubber, softening temperature.
In general, for the characteristic that the tyre surface temperature in the walking rises to the high-speed racing car tire more than 100 ℃, adding under the situation of softening temperature less than 100 ℃ resin, when the tyre surface temperature in the walking rises to more than 100 ℃, tyre surface sharply reduces because of the softening of resin with the rerum natura of rubber, thereby forfeiture walking stability, on the other hand, adding softening temperature is under the situation of the resin more than 100 ℃, causes tyres durable performance and wear hardness to reduce because of resin increases in the rubber internal heat generation under normal temperature and the walking condition below 100 ℃ on the contrary.
Yet, as the present invention, when being contained in the rubber composition for tire tread, much less can improve earth-catching property at dry pavement with the different tackiness agent of requirement ratio mixing softening temperature, the rising of the dynamic loss coefficient in the walking can also be minimized.
Specifically, be that the tackiness agent (B) that 90~100 ℃ tackiness agent (A) and softening temperature are 135~150 ℃ mixes in the rubber composition for tire tread that uses with softening temperature, tyre surface temperature in the walking is below 100 ℃ the time, because the buffering effect of the tackiness agent (B) that the tackiness agent (A) that softening temperature is low is high to softening temperature, can suppress that heating in the rubber increases and the reduction of endurance quality is minimized, in addition, the tyre surface temperature is more than 100 ℃ the time, because the high tackiness agent (B) of softening temperature can sharply not soften the low tackiness agent of softening temperature (A), therefore can prevent to lose walking stability because of the rubber rerum natura reduces.
On the other hand, drag racing car of the present invention uses rubber composition for tire tread with respect to styrene butadiene synthetic rubber 100 weight parts, contain enhancing property such as process oil 50~150 weight parts, carbon and silicon-dioxide weighting agent 100~200 weight parts, containing softening temperature is 90~100 ℃ tackiness agent (A) 1~10 weight part, tackiness agent (B) 1~10 weight part that softening temperature is 135~150 ℃.
Process oil preferably uses 50~150 weight parts, if less than 50 weight parts, rubber combination over-curing then, as the rubber composition for tire tread of drag racing car with tire, can't fully obtain earth-catching property at dry pavement, if be that then rubber combination is overbated more than 150 weight parts, have the temperature rising weather resistance and the rapid shortcoming that reduces of wear resistant that cause fetus face because of walking.
The enhancing weighting agent that is formed by carbon and silicon-dioxide etc. preferably uses 100~200 weight parts, if less than 100 weight parts, then can't fully obtain earth-catching property with the rubber composition for tire tread of tire at dry pavement as drag racing car, if surpass 200 weight parts, then the heat generation characteristic of rubber combination becomes very high, therefore has the rapid shortcoming that reduces of temperature rising weather resistance of the fetus face that causes because of walking.
As described softening temperature is 90~100 ℃ tackiness agent (A), can use coumarone-indene resin or C9 through-stone oleo-resinous as an example, and specifically, C9 through-stone oleo-resinous can be an aromatic hydrocarbon resin.
In addition, described tackiness agent (A) preferably uses 1~10 weight part with respect to crude rubber 100 weight parts, if less than 1 weight part, the buffering effect of then high to softening temperature tackiness agent (B) is little, if be more than 10 weight parts, then the tyre surface temperature in the walking is more than 100 ℃ the time, has the shortcoming that reduces and reduce because of its walking stability that causes because of the softening rubber rerum natura that causes of resin.
In addition, be 135~150 ℃ tackiness agent (B) as described softening temperature, can use phenolic aldehyde is resin, specifically, is an example of resin as such phenolic aldehyde, can use the polymkeric substance that forms by to the tertiary butyl-phenol and acetylene.
And then, described tackiness agent (B) preferably uses 1~10 weight part with respect to crude rubber 100 weight parts, if less than 1 weight part, then the increase effect of rubber adhesion power is little, if be more than 10 weight parts, when then the tyre surface temperature in the walking is less than 100 ℃, has the shortcoming that increases the reduction that causes endurance quality because of the heating in the rubber.
Term that uses in this specification sheets and the scope required for protection and word can not be defined in usually or the meaning of dictionary is explained; the contriver is for the invention with best method explanation oneself; should make an explanation with the meaning of technological thought according to the invention and the form of notion based on the principle that can define term concepts rightly.
Therefore, embodiment that puts down in writing in this specification sheets and formation illustrated in the accompanying drawings be the most preferred embodiment of the present invention only, can not all express technological thought of the present invention, therefore, be to be understood that multiple equivalent and the variation that can replace these modes when the application are possible.
Below, by embodiment rubber composition for tire tread of the present invention is carried out more specific description.But, clear and definite the present invention to be not limited to following embodiment.
* make and have the embodiment of the composition as following table 1 and the tread rubber composition of comparative example.
Embodiment and comparative example
Embodiment 1 is with respect to styrene butadiene rubbers 100 weight parts that contain oil (containing 37.5 weight parts) as crude rubber, contains the rubber combination of making as carbon black 100 weight parts that strengthen the property weighting agent and silicon-dioxide 50 weight parts, coupling agent 4 weight parts, treated oil 100 weight parts, tackiness agent (A) 5 weight parts, tackiness agent (B) 5 weight parts and other additives.
Embodiment 2 is except the content of tackiness agent (A) and tackiness agent (B) being changed into 8 weight parts, make with composition similarly to Example 1, comparative example 1~4th is not except the content with tackiness agent (A) and tackiness agent (B) is the mode of 1~10 weight part makes up, make with composition similarly to Example 1, comparative example 5 is except not using tackiness agent (A) and tackiness agent (B), makes with composition similarly to Example 1.
[table 1]
Synergist S-421 95 (weight part) | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
SBR | 137.5 | ← | ← | ← | ← | ← | ← |
Carbon black | 100 | ← | ← | ← | ← | ← | ← |
Silicon-dioxide | 50 | ← | ← | ← | ← | ← | ← |
The silicon-dioxide coupling agent | 4 | ← | ← | ← | ← | ← | ← |
Treated oil | 100 | ← | ← | ← | ← | ← | ← |
Zinc oxide | 3 | ← | ← | ← | ← | ← | ← |
Stearic acid | 1 | ← | ← | ← | ← | ← | ← |
Anti-aging agent | 4 | ← | ← | ← | ← | ← | ← |
Wax | 2 | ← | ← | ← | ← | ← | ← |
Tackiness agent 1 | 5 | 8 | 0.5 | 5 | 11 | 5 | - |
Tackiness agent 2 | 5 | 8 | 5 | 0.5 | 5 | 11 | - |
Promotor (CZ) | 2 | ← | ← | ← | ← | ← | ← |
Sulphur | 1.5 | ← | ← | ← | ← | ← | ← |
SBR: vinylbenzene is 35~45% emulsion polymerization styrene butadiene rubbers (containing treated oil 37.5 weight parts) in conjunction with content
Carbon black: iodine (I
2) adsorptive capacity is that 100~130mg/g, DBP oil number are the SAF carbon black of 120~140ml/100g
Silicon-dioxide: nitrogen adsorption specific surface area (N2SA) is 155~190m
2/ g, CTAB are 150~190m
2The silicon-dioxide of/g
Silicon-dioxide coupling agent: trade(brand)name Si-69 (TESPT, two-the triethoxysilylpropyltetrasulfide tetrasulfide)
Tackiness agent 1: softening temperature is 90~100 ℃ coumarone-indene resin (C-90 of KOLON company) or a C9 through-stone oleo-resinous (P-90 of KOLON company)
Tackiness agent 2: softening temperature is that 135~150 ℃ phenolic aldehyde is resin (KORESIN of Structol company)
Rubber composition for tire tread by embodiment and comparative example manufacturing is measured the results are shown in the following table 2 of rerum natura.
[table 2]
Rerum natura | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
Tension test (at 25 ℃) | |||||||
300% modulus (kg/cm 2) | 80 | 72 | 85 | 84 | 62 | 63 | 92 |
Breaking tenacity (kg/cm 2) | 143 | 135 | 150 | 147 | 117 | 118 | 153 |
Tension test (at 100 ℃) | |||||||
300% modulus (kg/cm 2) | 48 | 43 | 52 | 35 | 28 | 36 | 58 |
Breaking tenacity (kg/cm 2) | 109 | 105 | 114 | 98 | 92 | 108 | 119 |
The flexometer test | |||||||
20℃?Tanδ | 0.240 | 0.252 | 0.232 | 0.235 | 0.263 | 0.267 | 0.220 |
60℃?Tanδ | 0.268 | 0.272 | 0.283 | 0.260 | 0.285 | 0.312 | 0.258 |
Tension test:, test at 25 ℃, 100 ℃ respectively in order to simulate the rerum natura in walking initial stage and walking.20 ℃ of Tan δ: be the dynamic loss coefficient value measured with the flexometer of GABO company, value is big more, and then to be illustrated in the braking ability of dry pavement excellent more.
60 ℃ of Tan δ: be the dynamic loss coefficient value of measuring with the flexometer of GABO company, the endurance quality excellence is represented in the heating that is worth in the more little then expression walking more less.
-manufacturing tire specification: 225/45ZR17 Z211
-use the braking ability of exponential representation at dry pavement, the big more braking ability of then representing of value is excellent more.
Make actual drag racing car tire with the rubber composition for tire tread of making by embodiment and comparative example, estimate the braking ability at dry pavement, it the results are shown in the table 3.
[table 3]
Braking ability at dry pavement
Rerum natura | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
The dry pavement performance index | 105 | 107 | 101 | 101 | 102 | 103 | 100 |
As table 2, shown in 3 the result, added the embodiment 1 of 2 kinds of resins with different softening point with suitable ratio, 2 rubber composition for tire tread, with the comparative example 5 that does not add resin fully with to be added with the comparative example 1 of any resin on a small quantity less than 1 weight part, 2 compare, the result that acquisition improves at the earth-catching property of dry pavement epoch-makingly, with being added with softening temperature is that comparative example 3 more than 90~100 ℃ resin 10 weight parts is compared, the rerum natura that acquisition is compared with normal temperature at high temperature reduces considerably less result, in addition, with being added with softening temperature is that comparative example 4 more than 135~150 ℃ resin 10 weight parts is compared, and can obtain the remarkable few result of heating in the rubber.
Aforesaid rubber composition for tire tread of the present invention provides following effect. Use the different adhesive of softening point by mixing, much less can improve the earth-catching property at dry pavement, can be with the minimized advantage of rising of the dynamic loss coefficient in the walking but also have.
Claims (4)
1, a kind of rubber composition for tire tread wherein, contains crude rubber, softening temperature and is the tackiness agent (B) that 90~100 ℃ tackiness agent (A) and softening temperature are 135~150 ℃.
2, rubber composition for tire tread as claimed in claim 1 is characterized in that, described tackiness agent (A) contains 1~10 weight part with respect to crude rubber 100 weight parts, for coumarone-indene resin or C9 are petroleum line resin.
3, rubber composition for tire tread as claimed in claim 1 is characterized in that, described tackiness agent (B) contains 1~10 weight part with respect to crude rubber 100 weight parts, for phenolic aldehyde is a resin.
4, as each described rubber composition for tire tread in the claim 1~3, it is characterized in that, contain process oil 50~150 weight parts and enhancing property weighting agent 100~200 weight parts with respect to crude rubber 100 weight parts.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0115887 | 2007-11-14 | ||
KR1020070115887 | 2007-11-14 | ||
KR1020070115887A KR100894452B1 (en) | 2007-11-14 | 2007-11-14 | Rubber composition for tire tread |
Publications (2)
Publication Number | Publication Date |
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CN101434721A true CN101434721A (en) | 2009-05-20 |
CN101434721B CN101434721B (en) | 2012-03-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2008101496278A Expired - Fee Related CN101434721B (en) | 2007-11-14 | 2008-09-11 | Rubber composition for tyre tread |
Country Status (2)
Country | Link |
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KR (1) | KR100894452B1 (en) |
CN (1) | CN101434721B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102190821A (en) * | 2010-03-05 | 2011-09-21 | 住友橡胶工业株式会社 | High damping composition |
CN103319755A (en) * | 2013-06-20 | 2013-09-25 | 腾森橡胶轮胎(威海)有限公司 | Half-hot-melting motorcycle tyre and preparation method thereof |
CN110128713A (en) * | 2019-06-05 | 2019-08-16 | 青岛森麒麟轮胎股份有限公司 | Anti-slippery hovercar tire tread formula and anti-slippery hovercar tire |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160120240A (en) | 2015-04-06 | 2016-10-17 | 넥센타이어 주식회사 | Composition for tire of tread and tire using the same of |
KR101775624B1 (en) * | 2016-06-03 | 2017-09-06 | 넥센타이어 주식회사 | Rubber composition for tire |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR940006455B1 (en) * | 1991-04-16 | 1994-07-20 | 한국타이어제조 주식회사 | Innerliner rubber compositions |
KR20000018563A (en) | 1998-09-03 | 2000-04-06 | 홍건희 | Rubber composition of tire tread for race vehicle at high speed |
US20040182486A1 (en) * | 2003-01-30 | 2004-09-23 | Carlo Bernard | Agricultural or industrial tire with reinforced rubber composition |
FR2877348B1 (en) * | 2004-10-28 | 2007-01-12 | Michelin Soc Tech | PLASTICIZING SYSTEM FOR RUBBER COMPOSITION |
CN1827675A (en) * | 2005-03-01 | 2006-09-06 | 恒昌(昆山)精密模具有限公司 | High-strength wearable floor rubber and process for preparing same |
-
2007
- 2007-11-14 KR KR1020070115887A patent/KR100894452B1/en not_active IP Right Cessation
-
2008
- 2008-09-11 CN CN2008101496278A patent/CN101434721B/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102190821A (en) * | 2010-03-05 | 2011-09-21 | 住友橡胶工业株式会社 | High damping composition |
CN102190821B (en) * | 2010-03-05 | 2014-12-03 | 住友橡胶工业株式会社 | High damping composition |
CN103319755A (en) * | 2013-06-20 | 2013-09-25 | 腾森橡胶轮胎(威海)有限公司 | Half-hot-melting motorcycle tyre and preparation method thereof |
CN103319755B (en) * | 2013-06-20 | 2016-08-10 | 腾森橡胶轮胎(威海)有限公司 | A kind of half-hot-melting motorcycle tyre and preparation method thereof |
CN110128713A (en) * | 2019-06-05 | 2019-08-16 | 青岛森麒麟轮胎股份有限公司 | Anti-slippery hovercar tire tread formula and anti-slippery hovercar tire |
CN110128713B (en) * | 2019-06-05 | 2021-10-01 | 青岛森麒麟轮胎股份有限公司 | Formula of tire tread of anti-slippery aircraft tire and anti-slippery aircraft tire |
Also Published As
Publication number | Publication date |
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CN101434721B (en) | 2012-03-14 |
KR100894452B1 (en) | 2009-04-22 |
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