KR20020037588A - Rubber composition for tire tread - Google Patents

Rubber composition for tire tread Download PDF

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KR20020037588A
KR20020037588A KR1020000067606A KR20000067606A KR20020037588A KR 20020037588 A KR20020037588 A KR 20020037588A KR 1020000067606 A KR1020000067606 A KR 1020000067606A KR 20000067606 A KR20000067606 A KR 20000067606A KR 20020037588 A KR20020037588 A KR 20020037588A
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South Korea
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weight
parts
rubber
silica
butadiene rubber
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KR1020000067606A
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Korean (ko)
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KR100360937B1 (en
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엄진섭
백한승
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조충환
한국타이어 주식회사
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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
    • 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
    • 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
    • C08K3/04—Carbon
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

PURPOSE: A rubber composition for a tire tread is provided, to improve the smoothness of driving performance without deterioration of the gasoline mileage, the braking efficiency on a wet road and the abrasion resistance. CONSTITUTION: The rubber composition comprises 100 parts by weight of rubber which consists of 20-40 parts by weight of an emulsion polymerization styrene-butadiene rubber, 30-60 parts by weight of a solution polymerization styrene-butadiene rubber and 10-30 parts by weight of a butadiene rubber; 20-45 parts by weight of silica; 25-45 parts by weight of carbon black; 1.6-3.6 parts by weight of a silane coupling agent; 20-42 parts by weight of an aromatic oil as a processing softening agent; and other additives. Preferably the total content of carbon black and silica is 50-80 parts by weight based on 100 parts by weight of rubber, and the ratio of silica to carbon black is 0.67-1.40.

Description

타이어 트레드용 고무 조성물{Rubber composition for tire tread}Rubber composition for tire treads

본 발명은 타이어 트레드용 고무 조성물에 관한 것으로서, 더욱 상세하게는 보강제로서 실리카와 카본블랙을 조합하여 사용하여 타이어의 저연비성능, 젖은 노면에서의 제동성능, 내마모성능 뿐만 아니라 승차감까지도 고려한 타이어 트레드용 고무 조성무에 관한 것이다.The present invention relates to a rubber tread rubber composition, and more particularly, by using a combination of silica and carbon black as a reinforcing agent, a tire tread rubber considering not only the low fuel consumption performance of the tire, braking performance on the wet road surface, abrasion resistance, but also riding comfort It is about furtherance nothing.

실리카를 응용한 고무 조성물은 원래 유럽에서부터 발명되어 그 성능자체가 주로 유럽시장의 타이어 성능에 초점을 맞추고 있다. 유럽의 승용차용 타이어의 요구성능은 주로 고속주행에 따른 조종안정성과 젖은 노면에서의 제동성능이다.Silica-based rubber compositions were originally invented in Europe, and their performance is mainly focused on tire performance in the European market. The performance requirements of tires for passenger cars in Europe are mainly the stability of driving due to high-speed driving and braking performance on wet roads.

한편, 실리카를 응용한 고무 조성물이 도입되기 전에는 고속주행에 따른 조종안정성과 젖은 노면에서의 제동성능을 향상시키기 위해 주로 보강제(카본블랙)의 함량을 높이고 유리전이온도가 높은 고무를 사용하였다.On the other hand, before the introduction of the silica rubber composition was applied to increase the content of the reinforcing agent (carbon black) to improve the steering stability and braking performance on wet roads and high glass transition temperature was used.

그러나, 이러한 고무 조성물의 가장 큰 문제점은 높은 카본블랙 함량에 따른 저연비 성능의 희생으로, 이것을 해결하는 측면에서 고무 보강제로서 실리카의 응용은 매우 만족스러운 저연비 성능결과를 가져다 주었다.However, the biggest problem of this rubber composition is the sacrifice of low fuel efficiency due to the high carbon black content, the application of silica as a rubber reinforcement in terms of solving this has resulted in a very satisfactory low fuel efficiency performance.

지금까지 실리카를 응용한 고무 조성물이 주로 유럽에서 많이 사용되는 이유 중의 하나는 유럽 이외의 지역에서는 차량의 주행속도가 일반적으로 120kph를 넘지 않아 고속 주행시의 조종안정성이 그다지 요구되지 않으므로 보강제의 함량이 높을 이유가 없고, 따라서 낮은 보강제 함량으로 저연비 성능을 충분히 만족시킬 수 있었다. 또한, 유럽용 승용차 타이어의 문제점 중의 하나가 안정성을 중시하기 때문에 승차감의 희생에는 다소 관대했었다.One of the reasons why silica-based rubber compositions are mainly used in Europe is that the driving speed of vehicles outside of Europe generally does not exceed 120 kph. There was no reason, and thus a low reinforcing agent content could sufficiently satisfy the low fuel consumption performance. In addition, one of the problems of European passenger car tires was stability, which was somewhat tolerant at the expense of comfort.

그러나, 극동, 북미 등에서는 승차감 또한 타이어에서 매우 중요한 요구성능이고, 또한 자동차 생산업체에서의 타이어에 대한 요구 성능 중에 승차감은 매우 중요한 항목 중의 하나인데, 그러한 면에 있어서 유럽용으로 개발된 보강제 함량이 많은 타이어는 승차감 면에서는 다소 문제를 가지고 있다.However, in the Far East and North America, ride comfort is also a very important performance requirement for tires, and ride comfort is one of the most important items among tires required by automobile producers. Many tires have some problems with ride comfort.

이에 본 발명자들은 조종안정성과 젖은 노면에서의 제동성능, 내마모성 뿐만아니라 승차감까지도 만족시킬 수 있는 고무 조성물을 개발하기 위해 노력하던 중, 실리카와 카본블랙을 병용하여 사용하되 그 함량은 종전의 보강제 함량보다 낮추고 가공연화제의 함량도 낮춘 결과, 통상적인 승용차용 타이어 트레드 고무조성물에 비하여 저연비 성능, 젖은 노면에서의 제동성능, 내마모 성능은 유지하면서 승차감이 향상됨을 알게되어 본 발명을 완성하게 되었다.Therefore, the present inventors are trying to develop a rubber composition that can satisfy not only steering stability, damping performance on wet roads, abrasion resistance, but also riding comfort, and use silica and carbon black in combination, but its content is higher than that of the conventional reinforcing agent. As a result of lowering and lowering the content of the softening agent, it was found that the riding comfort is improved while maintaining a low fuel consumption performance, a braking performance on a wet road surface, and abrasion resistance, compared to a conventional tire tread rubber composition for passenger cars.

따라서, 본 발명의 목적은 저연비 성능, 젖은 노면에서의 제동성능, 내마모 성능은 유지하면서 승차감이 향상시켜 유럽 뿐만 아니라 극동, 북미 등에도 적합한타이어 트레드용 고무조성물을 제공하는 데 있다.Accordingly, an object of the present invention is to provide a tire tread rubber composition suitable for not only Europe but also Far East, North America, etc., while improving the riding comfort while maintaining low fuel efficiency, braking performance on wet roads, and abrasion resistance.

이와같은 목적을 달성하기 위한 본 발명의 타이어 트레드용 고무조성물은 유화중합 스티렌-부타디엔 고무 20∼40중량부, 용액중합 스티렌-부타디엔 고무 30∼60중량부 및 부타디엔 고무 10∼30중량부로 이루어진 원료고무 100중량부, 실리카 20∼45중량부, 카본블랙 25∼45중량부, 실란 커플링제 1.6∼3.6중량부, 가공연화제인 방향족 오일 20∼42중량부 및 기타 배합제를 포함하는 것을 그 특징으로 한다.Rubber composition for tire tread of the present invention for achieving the above object is a raw material rubber composed of 20 to 40 parts by weight of emulsion polymerization styrene-butadiene rubber, 30 to 60 parts by weight of solution polymerization styrene-butadiene rubber and 10 to 30 parts by weight of butadiene rubber. 100 parts by weight, 20 to 45 parts by weight of silica, 25 to 45 parts by weight of carbon black, 1.6 to 3.6 parts by weight of silane coupling agent, 20 to 42 parts by weight of aromatic oil which is a work softening agent, and other compounding agents. .

이와같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.

본 발명에 따른 타이어 트레드용 고무 조성물에 있어서 원료고무는 유화중합 스티렌-부타디엔 고무 20∼40중량부, 용액중합 스티렌-부타디엔 고무 30∼60중량부 및 부타디엔 고무 10∼30중량부로 이루어진다.In the rubber composition for tire tread according to the present invention, the raw material rubber consists of 20 to 40 parts by weight of emulsion-polymerized styrene-butadiene rubber, 30 to 60 parts by weight of solution-polymerized styrene-butadiene rubber, and 10 to 30 parts by weight of butadiene rubber.

여기서, 유화중합 스티렌-부타디엔 고무는 스티렌 함량이 20∼25%이고, 용액중합 스티렌-부타디엔 고무는 스티렌 함량이 20∼25%이고, 비닐 함량이 60∼70%이며, 부타디엔 고무는 시스 함량이 90% 이상인 것이 바람직하다.Here, the emulsion-polymerized styrene-butadiene rubber has a styrene content of 20 to 25%, the solution-polymerized styrene-butadiene rubber has a styrene content of 20 to 25%, a vinyl content of 60 to 70%, butadiene rubber has a sheath content of 90 It is preferable that it is% or more.

이와같은 용액중합 스티렌-부타디엔 고무의 함량이 30중량부 미만이면 저연비 성능과 젖은 노면에서의 제동성능에 있어서 불리하며, 부타디엔 고무의 함량이 10중량부 미만일 경우 내마모 성능의 저하를 가져온다.When the content of such solution-polymerized styrene-butadiene rubber is less than 30 parts by weight, it is disadvantageous in low fuel efficiency and braking performance on wet roads, and when the content of butadiene rubber is less than 10 parts by weight, wear resistance is reduced.

본 발명에서 보강제로는 실리카와 카본블랙을 사용하는 바, 실리카는 BET 비표면적이 130∼250㎡/g이며, CTAB 비표면적은 130∼190㎡/g이며, DBP 흡유량은 180∼280㎖/100g인 것이 바람직하고, 카본블랙은 BET 비표면적이 110∼150㎡/g이며, DBP 흡유량이 110∼150㎖/100g인 것이 바람직하다.In the present invention, as a reinforcing agent, silica and carbon black are used. The silica has a BET specific surface area of 130 to 250 m 2 / g, a CTAB specific surface area of 130 to 190 m 2 / g, and a DBP oil absorption of 180 to 280 ml / 100 g. Preferably, the carbon black has a BET specific surface area of 110 to 150 m 2 / g and a DBP oil absorption of 110 to 150 ml / 100 g.

이와같은 실리카와 카본블랙의 총량은 원료고무 100중량부에 대하여 50∼85중량부인 것이 바람직하고, 카본블랙에 대한 실리카의 비는 0.67∼1.40인 것이 바람직하다.The total amount of such silica and carbon black is preferably 50 to 85 parts by weight with respect to 100 parts by weight of the raw material rubber, and the ratio of silica to carbon black is preferably 0.67 to 1.40.

만일, 보강제의 총량이 원료고무 100중량부에 대하여 85중량부를 초과하면 저연비 성능이 나빠지고, 50중량부 미만으로 첨가되면 젖은 노면에서의 제동성이 불리해진다.If the total amount of the reinforcing agent exceeds 85 parts by weight with respect to 100 parts by weight of the raw material rubber, the low fuel consumption performance deteriorates, and if it is added below 50 parts by weight, the braking property on the wet road surface becomes disadvantageous.

그리고, 카본블랙에 대한 실리카의 비가 0.67 미만이면 젖은 노면에서의 제동성이 불리하고, 1.40 초과면 내마모 성능이 불리한 문제가 있다.In addition, when the ratio of silica to carbon black is less than 0.67, braking property on wet roads is disadvantageous, and when it is more than 1.40, wear resistance is disadvantageous.

그밖에 본 발명에서는 실란 커플링제, 가공연화제 및 통상의 배합제를 첨가하는 바, 실란 커플링제로는 트리에톡시실릴프로필 테트라설파이드를 사용할 수 있다. 그 함량은 원료고무 100중량부에 대하여 1.6∼3.6중량부이며, 가공연화제인 방향족 오일의 함량은 원료고무 100중량부에 대하여 20∼42중량부이다.In addition, in the present invention, a silane coupling agent, a work softener and a conventional compounding agent are added. As the silane coupling agent, triethoxysilylpropyl tetrasulfide can be used. The content is 1.6-3.6 weight part with respect to 100 weight part of raw material rubber, and the content of the aromatic oil which is a processing softener is 20-42 weight part with respect to 100 weight part of raw material rubber.

만일, 가공연화제의 함량이 원료고무 100중량부에 대하여 20중량부 미만이면 젖은 노념에서의 제동성이 불리해지고, 42중량부 초과면 저연비 성능이 나빠진다.If the content of the processed softener is less than 20 parts by weight based on 100 parts by weight of the raw rubber, braking property in wet seasoning is disadvantageous, and if it exceeds 42 parts by weight, the low fuel consumption performance is deteriorated.

통상의 배합제로는 노화방지제, 가황촉진제 등을 첨가할 수 있다.As a conventional compounding agent, an antioxidant, a vulcanization accelerator, etc. can be added.

이하, 본 발명을 실시예에 의거 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the Examples.

실시예 1∼7 및 비교예 1Examples 1-7 and Comparative Example 1

다음 표 1에 나타낸 바와 같은 배합비로 밴버리 믹서에서 혼합하고, 가류하여 시편을 제조하였다.Next, the mixture was mixed in a Banbury mixer at a blending ratio as shown in Table 1, and quenched to prepare a specimen.

제조된 시편에 대하여 경도, 300% 모듈러스, tanδ를 측정하고, 이를 185/65R 14H로 제작하여 저연비성, 젖은 노면에 대한 제동성, 내마모 성능 및 승차감을 지수로 표시하여 그 결과를 다음 표 2에 나타내었다.The hardness, 300% modulus, and tanδ of the prepared specimens were measured and manufactured as 185 / 65R 14H, and the low fuel efficiency, braking resistance to wet road surface, abrasion resistance, and riding comfort were expressed in an index. Shown in

(단위: 중량부)(Unit: parts by weight) 실 시 예Example 비교예 1Comparative Example 1 1One 22 33 44 55 66 77 원료고무Raw material rubber 유화중합 SBREmulsification Polymerization SBR 3030 3030 3030 3030 2020 4040 3030 -- 용액중합 SBRSolution polymerization SBR 4040 4040 4040 4040 5050 3030 6060 7070 부타디엔 고무Butadiene rubber 3030 3030 3030 3030 3030 3030 1010 3030 카본블랙Carbon black 3030 2525 3535 4545 2525 2525 2525 -- 실리카Silica 2020 3535 4545 4040 3535 2525 3535 8080 가공연화제Process Softener 2020 3030 4040 4242 3030 3030 3030 3030 커플링제Coupling agent 1.61.6 2.82.8 3.63.6 3.03.0 2.82.8 2.82.8 2.82.8 6.46.4 산화아연Zinc oxide 22 22 22 22 22 22 22 22 스테아린산Stearic acid 1One 1One 1One 1One 1One 1One 1One 1One 노화방지제Anti-aging 22 22 22 22 22 22 22 22 왁스Wax 1One 1One 1One 1One 1One 1One 1One 1One 황sulfur 1.51.5 1.51.5 1.51.5 1.51.5 1.51.5 1.51.5 1.51.5 1.51.5 가황촉진제 1Vulcanization accelerator 1 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0 가황촉진제 2Vulcanization accelerator 2 0.40.4 0.60.6 0.80.8 0.70.7 0.60.6 0.60.6 0.60.6 1.51.5 (주)유화중합 SBR: 스티렌 함량 23.5%인 유화중합 스티렌-부타디엔 고무용액중합 SBR: 스티렌 함량 20%이고 비닐 함량 67%인 용액중합 스티렌-부타디엔 고무부타디엔 고무: 시스 함량 97% 이상인 폴리부타디엔 고무카본블랙: N234(질소흡착비표면적 131㎡/g, DBP 흡유량 123㎖/100g)실리카: Zeosil 175(질소흡착비표면적 170∼190㎡/g, CTAB 비표면적 150∼180㎡/g, DBP 흡유량 220㎖/100g 이상)가공연화제: 아로마틱 #2 오일커플링제: 트리에톡시실릴프로필테트라설파이드노화방지제: N-(1,3-디메틸부틸)-N'-페닐-p-페닐렌디아민가황촉진제 1: N-사이클로헥실-2-벤조티아질 설펜아미드가황촉진제 2: N,N-디페닐 구아니딘Emulsion polymerization SBR: Emulsion polymerization styrene-butadiene rubber solution polymerization with styrene content of 23.5% SBR: Solution polymerization styrene-butadiene rubber butadiene rubber with 20% styrene content and 67% vinyl content Black: N234 (nitrogen adsorption specific surface area 131 m 2 / g, DBP oil absorption 123 ml / 100 g) Silica: Zeosil 175 (nitrogen adsorption specific surface area 170 to 190 m 2 / g, CTAB specific surface area 150 to 180 m 2 / g, DBP oil absorption 220 ml / 100 g or more) Process softener: Aromatic # 2 Oil coupling agent: Triethoxysilylpropyl tetrasulfide anti-aging agent: N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine vulcanization accelerator 1: N -Cyclohexyl-2-benzothiazyl sulfenamide vulcanization accelerator 2: N, N-diphenyl guanidine

실 시 예Example 비교예 1Comparative Example 1 1One 22 33 44 55 66 77 시편물성Specimen properties 경도Hardness 6262 6565 6868 6969 6666 6363 6767 7070 300% 모듈러스300% modulus 110110 108108 115115 125125 120120 101101 127127 120120 tanδ(0℃)tanδ (0 ° C) 0.2870.287 0.2750.275 0.2600.260 0.2550.255 0.3020.302 0.2570.257 0.3150.315 0.2420.242 tanδ(60℃)tanδ (60 ° C) 0.1100.110 0.1210.121 0.1340.134 0.1420.142 0.1180.118 0.1300.130 0.1140.114 0.1230.123 185/65R 14H185 / 65R 14H 저연비성Low fuel consumption 104104 9999 9696 9494 102102 9898 103103 100100 젖은 노면 제동성Wet road braking 9595 100100 9898 102102 103103 9898 105105 100100 내마모성Wear resistance 106106 105105 103103 103103 101101 106106 9595 100100 승차감Ride 105105 103103 100100 101101 102102 100100 102102 100100 (주)경도, 300% 모듈러스: ASTM 인장시험기로 측정tanδ: 동적손실계수(60℃ tanδ)는 0.5% 스트레인으로 10Hz 진동수로 측정, 측정방법은 Temperature sweep 방식으로 토션 타입의 점탄성 시험기를 이용하였다.Co., Ltd. Hardness, 300% Modulus: Measured by ASTM tensile test tanδ: The dynamic loss factor (60 ℃ tanδ) was measured at 10Hz frequency with 0.5% strain, and the measurement method was a temperature sweep method using a torsion type viscoelastic tester.

상기 표 2의 결과로부터, 실시예 1∼7에 따라 얻어진 고무에 비하여 실리카만을 보강제로 첨가한 비교예 1의 경우 저연비성, 젖은 노면에서의 제동성에 있어서는 우수하나 내마모성능이나 승차감에 있어서는 떨어짐을 알 수 있다.From the results of Table 2, Comparative Example 1, in which only silica was added as a reinforcing agent, was superior to the rubbers obtained in Examples 1 to 7, but was excellent in low fuel efficiency and braking performance on wet road surfaces, but inferior in wear resistance and ride comfort. Able to know.

이상에서 상세히 설명한 바와 같이, 본 발명에 따라 유화중합 스티렌-부타디엔 고무, 용액중합 스티렌-부타디엔 고무 및 부타디엔 고무를 원료고무로 하고, 여기에 보강제로서 카본블랙과 실리카를 일정비로 첨가하여 이루어진 고무 조성물은 저연비성, 젖은 노면에서의 제동성 및 내마모성을 만족시키면서도 승차감도 우수하여 유럽 뿐만 아니라 극동, 북미 지역에서도 유용하게 사용할 수 있는 타이어를 제공할 수 있다.As described in detail above, according to the present invention, a rubber composition comprising emulsion-polymerized styrene-butadiene rubber, solution-polymerized styrene-butadiene rubber, and butadiene rubber as raw materials rubber, and carbon black and silica as a reinforcing agent in a fixed ratio It can provide a tire that can be usefully used not only in Europe, but also in the Far East and North America, while satisfying low fuel consumption, braking property and abrasion resistance on wet roads.

Claims (5)

유화중합 스티렌-부타디엔 고무 20∼40중량부, 용액중합 스티렌-부타디엔 고무 30∼60중량부 및 부타디엔 고무 10∼30중량부로 이루어진 원료고무 100중량부, 실리카 20∼45중량부, 카본블랙 25∼45중량부, 실란 커플링제 1.6∼3.6중량부, 가공연화제인 방향족 오일 20∼42중량부 및 기타 배합제를 포함하는 타이어 트레드용 고무 조성물.100 parts by weight of raw material rubber consisting of 20 to 40 parts by weight of emulsion-polymerized styrene-butadiene rubber, 30 to 60 parts by weight of solution-polymerized styrene-butadiene rubber, and 10 to 30 parts by weight of butadiene rubber, 20 to 45 parts by weight of silica, and 25 to 45 carbon black The rubber composition for tire treads containing a weight part, 1.6-3.6 weight part of silane coupling agents, 20-42 weight part of aromatic oils which are process softeners, and other compounding agents. 제 1 항에 있어서, 유화중합 스티렌-부타디엔 고무는 스티렌 함량이 20∼25%이고, 용액중합 스티렌-부타디엔 고무는 스티렌 함량이 20∼25%이고, 비닐 함량이 60∼70%이며, 부타디엔 고무는 시스 함량이 90% 이상인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The method of claim 1, wherein the emulsion-polymerized styrene-butadiene rubber has a styrene content of 20 to 25%, the solution-polymerized styrene-butadiene rubber has a styrene content of 20 to 25%, a vinyl content of 60 to 70%, butadiene rubber Rubber composition for tire treads, characterized in that the sheath content is 90% or more. 제 1 항에 있어서, 실리카는 BET 비표면적이 130∼250㎡/g이며, CTAB 비표면적은 130∼190㎡/g이며, DBP 흡유량은 180∼280㎖/100g인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The tire tread rubber according to claim 1, wherein the silica has a BET specific surface area of 130 to 250 m 2 / g, a CTAB specific surface area of 130 to 190 m 2 / g, and a DBP oil absorption of 180 to 280 ml / 100 g. Composition. 제 1 항에 있어서, 카본블랙은 BET 비표면적이 110∼150㎡/g이며, DBP 흡유량이 110∼150㎖/100g인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The rubber composition for a tire tread according to claim 1, wherein the carbon black has a BET specific surface area of 110 to 150 m 2 / g and a DBP oil absorption of 110 to 150 ml / 100 g. 제 1 항에 있어서, 카본블랙과 실리카의 총량은 원료고무 100중량부에 대하여 50∼85중량부이며, 카본블랙에 대한 실리카의 비는 0.67∼1.40인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The rubber composition for a tire tread according to claim 1, wherein the total amount of carbon black and silica is 50 to 85 parts by weight based on 100 parts by weight of the raw material rubber, and the ratio of silica to carbon black is 0.67 to 1.40.
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KR100512132B1 (en) * 2002-05-31 2005-09-02 금호타이어 주식회사 Silica-filled tire tread rubber composition
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KR100476012B1 (en) * 2002-05-29 2005-03-10 금호타이어 주식회사 Tread rubber composition for preventing of static electricity
KR100512132B1 (en) * 2002-05-31 2005-09-02 금호타이어 주식회사 Silica-filled tire tread rubber composition
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KR100464730B1 (en) * 2002-06-20 2005-01-06 한국타이어 주식회사 Tire tread rubber composition
KR100827321B1 (en) * 2007-03-27 2008-05-07 금호타이어 주식회사 Tire tread rubber composition
KR100871280B1 (en) * 2007-09-18 2008-11-28 금호타이어 주식회사 Rubber compositions for tire tread
KR100984773B1 (en) 2007-12-26 2010-10-04 한국타이어 주식회사 Rubber composition for tire tread of Passenger car
KR101011926B1 (en) * 2008-07-17 2011-02-01 주식회사 한샘 Furniture used in kitchen and assembling method thereof
KR101442217B1 (en) * 2012-11-23 2014-09-22 한국타이어 주식회사 Rubber composition for tire tread and tire manufactured by using the same
CN113896965A (en) * 2021-10-11 2022-01-07 中策橡胶集团有限公司 White carbon black filled tread rubber composition, mixing method and wear-resistant tire
CN115304826A (en) * 2022-06-20 2022-11-08 山东玲珑轮胎股份有限公司 Energy-saving safety tire tread rubber material and preparation method thereof
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