KR100387297B1 - Tire tread composition - Google Patents

Tire tread composition Download PDF

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KR100387297B1
KR100387297B1 KR10-2000-0067619A KR20000067619A KR100387297B1 KR 100387297 B1 KR100387297 B1 KR 100387297B1 KR 20000067619 A KR20000067619 A KR 20000067619A KR 100387297 B1 KR100387297 B1 KR 100387297B1
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rubber
weight
parts
styrene
content
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KR10-2000-0067619A
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Korean (ko)
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KR20020037601A (en
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정철오
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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
    • C08L7/00—Compositions of natural rubber
    • 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
    • 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
    • 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
    • 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

본 발명은 타이어 트레드용 고무 조성물에 관한 것으로서, 천연고무, 2종의 용액중합 스티렌-부타디엔 고무 및 폴리부타디엔을 원료고무로 하고 여기에 카본블랙, 실리카 등을 첨가하여 이루어지며, 이는 주행성이나 저회전저항을 만족시키면서도 내마모성능이 향상되어 경량 트럭의 타이어용으로 적합하다.The present invention relates to a rubber tread rubber composition, which is made of natural rubber, two kinds of solution-polymerized styrene-butadiene rubber and polybutadiene as raw material rubber, and carbon black, silica, etc. are added thereto, and this is runability or low rotation. Wear resistance is improved while satisfying the resistance, making it suitable for use in light truck tires.

Description

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

본 발명은 타이어 트레드용 고무 조성물에 관한 것으로서, 더욱 상세하게는 주행성과 회전저항 성능을 만족시키면서도 내마모성을 향상시킬 수 있어 트럭용으로 적합한 타이어 트레드용 고무 조성물에 관한 것이다.The present invention relates to a rubber tread rubber composition, and more particularly, to a tire tread rubber composition that can improve wear resistance while satisfying running performance and rolling resistance performance.

종래, 타이어에 있어서 주행성과 회전저항성능을 동시에 만족시킬 수 있는 다양한 연구가 진행되어 왔다.2. Description of the Related Art [0002] Various studies have been conducted to satisfy both running and rolling resistance at the same time in a tire.

주행성과 회전저항을 향상시키기 위한 종래의 조성물로 미합중국 특허 제5,162,409호에는 부타디엔 고무와 스티렌-부타디엔 고무의 혼합물 90∼70중량부, 할로겐화 이소부틸렌 고무 10∼30중량부로 이루어진 고무에 실리카 10∼30중량부 및 유기실란 가교제 1∼8중량부를 첨가하여 이루어진 타이어 트레드용 고무 조성물이 개시되어 있다.As a conventional composition for improving runability and rotational resistance, U.S. Patent No. 5,162,409 discloses silica in a rubber consisting of 90 to 70 parts by weight of a mixture of butadiene rubber and styrene-butadiene rubber, and 10 to 30 parts by weight of halogenated isobutylene rubber. A rubber composition for tire treads comprising 1 part by weight and 1 to 8 parts by weight of an organosilane crosslinking agent is disclosed.

그리고, 미합중국특허 제5,872,179호에는 용액중합 스티렌-부타디엔 고무, 시스 1,4-폴리부타디엔 고무 및 고 비닐 폴리부타디엔 고무가 혼합된 일라스토머와 실리카, 실리카 커플링제로 이루어진 고무 조성물이 개시되어 있다.In addition, U. S. Patent No. 5,872, 179 discloses a rubber composition composed of an elastomer, a silica and a silica coupling agent in which a solution-polymerized styrene-butadiene rubber, a cis 1,4-polybutadiene rubber and a high vinyl polybutadiene rubber are mixed.

이와같이 종래의 천연고무 중심에서 제동성능을 보강하기 위해 합성고무, 특히 스타이렌-부타디엔 공중합체 및 폴리부타디엔 등을 용도에 따라 단독으로 또는 블렌딩하여 사용하고 있으며, 점차로 그 사용 비중이 커지고 있다.As such, synthetic rubber, in particular, styrene-butadiene copolymer, polybutadiene, or the like is used alone or in blends to reinforce braking performance in conventional natural rubber centers, and its use is gradually increasing.

그러나, 이들 조성물에서는 내마모성은 향상되기 보다는 동등 이하의 수준으로 머물고 있다. 특히 경량 트럭용 타이어 트레드 조성물은 마모성능이 특히 중요하기 때문에 마모성의 향상이 주요관건이라 할 수 있다.However, in these compositions, the wear resistance remains below the equivalent level rather than being improved. In particular, since the wear performance is particularly important for a tire tread composition for a light truck, improvement of wearability may be a key factor.

그런데, 마모-내구-제동-저연비의 성능은 상호간에 이율배반적인 특성을 지니고 있어 이러한 성능을 동시에 향상시키거나 균형을 맞추는 것은 여전히 난제로 남아 있다.However, the performance of wear-endurance-braking-low fuel economy has mutually betrayal characteristics, so it is still difficult to improve or balance these performances simultaneously.

이를 해결하기 위한 종래의 기술로는 제동성 및 마모 향상을 위해 합성고무, 즉 스타이렌-부타디엔 공중합체 및 폴리부타디엔 고무를 혼합 사용하게 되는바, 내마모성을 동시에 만족시키는 데는 부족하였다.Conventional technology for solving this problem is to use a mixture of synthetic rubber, that is, styrene-butadiene copolymer and polybutadiene rubber to improve the braking properties and wear, it was not enough to satisfy the wear resistance at the same time.

이에 본 발명자는 주행성이나 저회전저항을 만족시키면서도 내마모성을 향상시킬 수 있는 최적의 고무 조성물을 개발하기 위해 연구노력하던 중, 특정의 비닐함량과 스티렌 함량을 갖는 2종의 용액중합 스티렌-부타디엔 고무를 천연고무와 폴리부타디엔 고무와 함께 사용한 결과, 이를 만족시킴을 알게되어 본 발명을 완성하게 되었다.Therefore, the present inventors have been trying to develop an optimal rubber composition that can improve the wear resistance while satisfying the running performance and low rotational resistance, and use two kinds of solution-polymerized styrene-butadiene rubbers having a specific vinyl content and styrene content. As a result of using it with natural rubber and polybutadiene rubber, it was found that the present invention satisfies this and completed the present invention.

따라서, 본 발명의 목적은 주행성이나 저회전저항의 저하없이 내마모성을 향상시켜 경량 트럭용 타이어 트레드용으로 적합한 고무 조성물을 제공하는 데 있다.Accordingly, an object of the present invention is to provide a rubber composition which is suitable for a tire tread for a light truck by improving wear resistance without deterioration of runability or low rolling resistance.

이와같은 목적을 달성하기 위한 본 발명의 타이어 트레드용 고무 조성물은 천연고무 20∼35중량부, 비닐 함량 8%이고 스티렌 함량 20%이며, 유리전이온도가 -70℃이며, 오일이 37.5% 유전된 용액중합 스티렌-부타디엔 고무 30∼35중량부, 비닐 함량 68%,스티렌 함량 20%인 용액중합 스티렌-부타디엔 고무 20∼35중량부 및 시스 함량 90% 이상인 폴리부타디엔 고무 10∼15중량부로 이루어진 원료고무 100중량부, 카본블랙 40∼50중량부, 실리카 10∼15중량부, 상기 실리카 100중량부에 대하여 8중량부의 실란 및 첨가제를 포함하는 것임을 그 특징으로 한다.In order to achieve the above object, the rubber composition for tire tread of the present invention is 20 to 35 parts by weight of natural rubber, vinyl content of 8%, styrene content of 20%, glass transition temperature of -70 ° C, and oil of 37.5%. Raw material rubber consisting of 30 to 35 parts by weight of solution-polymerized styrene-butadiene rubber, 68% to vinyl content, 20 to 35 parts by weight of solution-polymerized styrene-butadiene rubber with 20% styrene content, and 10 to 15 parts by weight of polybutadiene rubber having a sheath content of 90% or more. 100 parts by weight, 40 to 50 parts by weight of carbon black, 10 to 15 parts by weight of silica, and 8 parts by weight of silane and additives per 100 parts by weight of the silica.

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 조성무은 원료고무로서 마모에 유리한 저 유리전이온도의 용액중합 스티렌-부타디엔 고무와 폴리부타디엔 고무를 사용하고, 발열이 낮은 카본블랙과 실리카를 혼용함으로써 마모, 주행성 및 연비성능을 동시에 향상시킬 수 있도록 한다.The rubber composition for tire tread according to the present invention is a raw material rubber, which is a solution of styrene-butadiene rubber and polybutadiene rubber having a low glass transition temperature, which is advantageous for abrasion. To improve at the same time.

구체적으로, 원료고무는 천연고무 20∼35중량부, 비닐 함량 8%이고 스티렌 함량 20%이며, 유리전이온도가 -70℃이며, 오일이 37.5% 유전된 용액중합 스티렌-부타디엔 고무 30∼35중량부, 비닐 함량 68%, 스티렌 함량 20%인 용액중합 스티렌-부타디엔 고무 20∼35중량부 및 시스 함량 90% 이상인 폴리부타디엔 고무 10∼15중량부로 이루어진다.Specifically, the raw material rubber is 20 to 35 parts by weight of natural rubber, vinyl content of 8%, styrene content of 20%, glass transition temperature of -70 ℃, oil 37.5% oil-infused solution styrene-butadiene rubber 30 to 35 weight It comprises 20 to 35 parts by weight of a solution-polymerized styrene-butadiene rubber having 68% vinyl content and 20% styrene content and 10 to 15 parts by weight polybutadiene rubber having a sheath content of 90% or more.

여기서, 천연고무의 함량이 20중량부보다 적으면 고무의 적정함 모듈러스 수준을 유지할 수 없으며, 35중량부 초과면 제동성능에 악영향을 끼친다.Here, when the content of natural rubber is less than 20 parts by weight, the appropriate modulus level of the rubber cannot be maintained, and if it exceeds 35 parts by weight, the braking performance is adversely affected.

그리고, 비닐 함량 8%이고 스티렌 함량 20%이며, 유리전이온도가 -70℃이며, 오일이 37.5% 유전된 용액중합 스티렌-부타디엔 고무를 30중량부 미만으로 사용하면 마모성능이 저하되고, 35중량부 초과면 제동성능이 저하되는 단점이 있다.In addition, when the vinyl content is 8%, the styrene content is 20%, the glass transition temperature is -70 ° C, and the oil is 37.5% of the oil-induced solution-polymerized styrene-butadiene rubber at less than 30 parts by weight, the wear performance is reduced, and the weight is 35%. If the excess exceeds the disadvantage, the braking performance is lowered.

비닐 함량 68%, 스티렌 함량 20%인 용액중합 스티렌-부타디엔 고무의 함량이 20중량부 미만이면 회전저항이 증가하며 35중량부를 초과하여 첨가시 회전저항의 과도한 저하로 제동성이 불리해진다.When the content of the solution-polymerized styrene-butadiene rubber having a vinyl content of 68% and a styrene content of 20% is less than 20 parts by weight, the rotational resistance increases, and when the content exceeds 35 parts by weight, the braking performance is deteriorated due to excessive decrease of the rotational resistance.

마지막으로, 시스 함량 90% 이상인 폴리부타디엔 고무를 10중량부 미만으로 사용시 마모성능이 급격히 저하되고, 15중량부 초과면 제동성능이 불리해진다.Finally, when the polybutadiene rubber having a sheath content of 90% or more is used at less than 10 parts by weight, the wear performance is drastically lowered, and if it is more than 15 parts by weight, the braking performance is disadvantageous.

이와같은 원료고무 100중량부에 카본블랙, 실리카, 실란 및 통상의 배합제를첨가하는 바, 구체적으로 고무 보강성에 영향을 미치는 카본블랙은 고무의 인장강도 뿐만 아니라 연비성능에도 영향을 주므로 요오드 흡착량이 115∼120mg/g, DBP 흡유량이 135∼140㎤/100g인 것이 바람직하다.The carbon black, silica, silane and the usual compounding agent are added to 100 parts of the raw material rubber. Specifically, the carbon black, which affects the rubber reinforcement, affects not only the tensile strength of the rubber but also the fuel efficiency, so the amount of iodine adsorption is 115 It is preferable that they are -120 mg / g and DBP oil absorption amount 135-140 cm <3> / 100g.

이와같은 카본블랙을 원료고무 100중량부에 대하여 40중량부 미만으로 사용시 인장강도의 저하로 마모에 불리하며 50중량부를 초과하여 첨가할 경우 경도, 인장강도의 과도한 증가로 연비성능이 불리해진다.When the carbon black is used in an amount of less than 40 parts by weight based on 100 parts by weight of the raw material rubber, it is detrimental to wear due to a decrease in tensile strength, and when it is added in excess of 50 parts by weight, fuel efficiency is disadvantaged due to excessive increase in hardness and tensile strength.

본 발명에서 실리카는 타이어의 연비성능을 향상시키기 위해 사용하는 데, 질소흡착 비표면적이160∼180㎡/g, DBP 흡유량이 230∼240㎤/100g인 것이 바람직하다. 실리카의 첨가량이 15중량부를 초과할 경우에는 마모성능이 급격히 저하된다.In the present invention, the silica is used to improve the fuel efficiency of the tire, the nitrogen adsorption specific surface area is preferably 160 to 180 m 2 / g, DBP oil absorption is 230 to 240 cm 3 / 100g. When the addition amount of silica exceeds 15 parts by weight, the wear performance is drastically lowered.

실란은 실리카의 사용량에 따라 변경되는 데, 바람직하게는 실리카 100중량부에 대하여 8중량부 정도로 첨가되는 것이 바람직하다.The silane is changed depending on the amount of silica used, preferably about 8 parts by weight based on 100 parts by weight of silica.

그밖에 본 발명의 타이어 트레드용 고무 조성물에는 통상의 고무 배합제들, 예를들어 산화아연, 스테아린산, 유황, 촉진제 등을 첨가할 수 있음을 물론이다.In addition, the rubber composition for tire tread of the present invention can be added to the conventional rubber compounding agents, for example, zinc oxide, stearic acid, sulfur, accelerators and the like.

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 및 비교예 1∼4Example 1 and Comparative Examples 1-4

다음 표 1에 나타낸 바와 같은 조성 및 함량으로 배합하여 고무시편을 제조하였다.Next, rubber specimens were prepared by blending the compositions and contents as shown in Table 1.

시편의 물성을 측정하고, 타이어로서의 성능을 알아보기 위해 LT235/75R15 ALL TERRAIN TYPE으로 제조하여 조종성능, 주행성 및 마모성능을 측정하여 그 결과를 다음 표 2에 나타내었다.In order to measure the physical properties of the specimen and to determine the performance as a tire, manufactured with the LT235 / 75R15 ALL TERRAIN TYPE, the steering performance, running performance and abrasion performance were measured, and the results are shown in Table 2 below.

실시예 1Example 1 비 교 예Comparative Example 1One 22 33 44 천연고무Natural rubber 3030 3535 -- 2525 3030 합성고무Synthetic rubber aa -- 6565 -- -- -- bb -- -- 3535 -- 3030 cc -- -- 4444 6565 3030 dd 3030 -- -- -- -- ee 3030 -- -- -- -- ff 1010 -- 2121 1010 1010 카본블랙Carbon black aa -- 6565 -- -- -- bb -- -- 5555 -- -- cc 4040 -- -- 4040 4040 실리카Silica 1010 -- 3030 1010 1010 실란(카본블랙 함량 50%)Silane (carbon black content 50%) 1.61.6 -- 4.84.8 1.61.6 1.61.6 유황brimstone 1.51.5 1.41.4 1.51.5 1.51.5 1.51.5 촉진제accelerant 1.51.5 1.81.8 1.51.5 1.51.5 1.51.5 (주)합성고무: a- 스티렌 함량 23.5%, 오일 37.5%인 유화중합 스티렌-부타디엔 고무b- 스티렌 함량 40%, 오일 37.5%의 유화중합 스티렌-부타디엔 고무c- 비닐 함량 40%, 스티렌 함량 20%인 용액중합 스티렌-부타디엔 고무d- 비닐함량 8%, 스티렌 함량 20%, 오일 37.5%의 용액중합 스티렌-부타디엔 고무e- 비닐함량 67%, 스티렌 함량 25%의 용액중합 스티렌-부타디엔 고무f- 시스-부타디엔 고무카본블랙: a- 요오드 흡착량 115∼125mg/g, DBP 흡유량 110∼120㎤/100g인 카본블랙b- 요오드 흡착량 140∼150mg/g, DBP 흡유량 130∼140㎤/100g인 카본블랙c- 요오드 흡착량 115∼120mg/g, DBP 흡유량 135∼140㎤/100g인 카본블랙실리카: 질소흡착 비표면적 160∼180㎡/g, DBP 흡유량 230∼240㎤/100g인 실리카Synthetic rubber: a-styrene styrene-butadiene rubber with 23.5% styrene content and 37.5% oil b- 40% styrene-butadiene rubber c-vinyl content 40%, oil 37.5% Solution-polymerized styrene-butadiene rubber d-% of solution polymerized styrene-butadiene rubber e-vinyl content 67% and styrene-content 25% styrene-butadiene rubber f- Cis-butadiene rubber carbon black: carbon black with a- iodine adsorption 115-125 mg / g, DBP oil absorption 110-120 cm 3/100 g b-iodine adsorption 140-150 mg / g, DBP oil absorption 130-140 cm 3/100 g Carbon black silica with black c-iodine adsorption 115-120 mg / g, DBP oil absorption 135-140 cm 3/100 g: Silica with nitrogen adsorption specific surface area 160-180 m 2 / g, DBP oil absorption 230-240 cm 3/100 g

실시예 1Example 1 비 교 예Comparative Example 1One 22 33 44 피로-응력 물성Fatigue-Stress Properties 경도Hardness 6060 6060 7070 6060 6262 300% 모듈러스300% modulus 119119 8989 123123 102102 123123 인장강도The tensile strength 206206 224224 197197 226226 218218 동적손실계수Dynamic loss factor tanδ0℃tanδ0 ℃ 0.21350.2135 0.18120.1812 0.20.2 0.28370.2837 0.27180.2718 tanδ60℃tanδ60 ℃ 0.10260.1026 0.17580.1758 0.16480.1648 0.11170.1117 0.12290.1229 람본 마모Rambon wear 실온 마모지수Room Wear Index 105105 100100 8888 7575 7676 100℃×48시간 노화후 마모지수Wear index after aging of 100 ℃ × 48 hours 107107 100100 7777 6565 7878 조종성능Steering performance ratingrating 77 66 6+6+ 6+6+ 6+6+ 주행성능Driving performance 마른노면Dry road 102102 100100 101101 102.3102.3 103.5103.5 젖은노면Wet road 103103 100100 104104 105.5105.5 106106 내마모Wear resistance 마모지수(20,000 km 주행)Wear index (20,000 km) 105105 100100 8585 8181 8080

상기 표 2에 있어서, 주행성능은 0℃ tanδ값이 클수록 양호한 것이고,회전저항은 60℃ tanδ값이 작을수록 양호한 것이며,트레드 마모성능은 지수값이 클수록 양호한 것이고, 조정성능은 rating 값이 클수록 양호한 것이다. 실차 주행성은 지수값이 클수록 양호한 것이고, 실차마모성능 또한 지수값이 클수록 양호한 것이다.In Table 2, the running performance is better as the 0 ° C tanδ value is larger, and the rotational resistance is better as the 60 ° C tanδ value is smaller, the tread wear performance is better as the index value is larger, and the adjustment performance is better as the rating value is larger. will be. The larger the index value is, the better the actual vehicle running performance is. The higher the index value is, the better the actual vehicle wear performance is.

이와같은 사실을 감안하여 볼 때, 본 발명의 고무 조성물의 경우 주행성이나 저회전저항 성능은 동등 이상이면서도 마모성능이 크게 향상되었음을 알 수 있다.In view of such a fact, it can be seen that the wearability of the rubber composition of the present invention is improved even though the running performance and the low rotational resistance performance are equivalent or more.

이상에서 상세히 설명한 바와 같이, 본 발명에 따라 천연고무, 2종의 용액중합 스티렌-부타디엔 고무 및 폴리부타디엔을 원료고무로 하고 여기에 카본블랙, 실리카 등을 첨가하여 이루어진 고무 조성물은 주행성이나 저회전저항을 만족시키면서도 내마모성능이 향상되어 경량 트럭의 타이어용으로 적합하다.As described above in detail, according to the present invention, a rubber composition comprising natural rubber, two kinds of solution-polymerized styrene-butadiene rubbers and polybutadiene as raw material rubbers, and carbon black, silica, etc. is added thereto. Wear resistance is improved while satisfying the requirements, making it suitable for tires of light trucks.

Claims (3)

천연고무 20∼35중량부, 비닐 함량 8%이고 스티렌 함량 20%이며, 유리전이온도가 -70℃이며, 오일이 37.5% 유전된 용액중합 스티렌-부타디엔 고무 30∼35중량부, 비닐 함량 68%,스티렌 함량 20%인 용액중합 스티렌-부타디엔 고무 20∼35중량부 및 시스 함량 90% 이상인 폴리부타디엔 고무 10∼15중량부로 이루어진 원료고무 100중량부, 카본블랙 40∼50중량부, 실리카 10∼15중량부, 상기 실리카 100중량부에 대하여 8중량부의 실란 및 첨가제를 포함하는 타이어 트레드용 고무 조성물.Natural rubber 20-35 parts by weight, vinyl content 8%, styrene content 20%, glass transition temperature -70 ° C, oil 37.5% Oil-induced solution Polymerized styrene-butadiene rubber 30-35 parts by weight, vinyl content 68% 100 parts by weight of raw material rubber consisting of 20 to 35 parts by weight of solution-polymerized styrene-butadiene rubber having a styrene content of 20% and 10 to 15 parts by weight of polybutadiene rubber having a sheath content of 90% or more, 40 to 50 parts by weight of carbon black, and 10 to 15 silicas. A rubber composition for tire treads comprising 8 parts by weight of silane and an additive based on 100 parts by weight and 100 parts by weight of the silica. 제 1 항에 있어서, 카본블랙은 요오드 흡착량이 115∼120mg/g, DBP 흡유량이 135∼140㎤/100g인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The rubber composition for tire treads according to claim 1, wherein the carbon black has an iodine adsorption amount of 115 to 120 mg / g and a DBP oil absorption amount of 135 to 140 cm 3/100 g. 제 1 항에 있어서, 실리카는 질소흡착 비표면적이160∼180㎡/g, DBP 흡유량이 230∼240㎤/100g인 것임을 특징으로 하는 타이어 트레드용 고무 조성물.The rubber composition for tire treads according to claim 1, wherein the silica has a nitrogen adsorption specific surface area of 160 to 180 m 2 / g and a DBP oil absorption of 230 to 240 cm 3/100 g.
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KR101016370B1 (en) 2008-09-22 2011-02-21 금호타이어 주식회사 Tire tread rubber composition
KR101133400B1 (en) 2009-12-22 2012-04-10 한국타이어 주식회사 Rubber Composition for Tire Tread and Air Injection Tire Using The Same
KR101142550B1 (en) * 2009-12-22 2012-05-08 한국타이어 주식회사 Rubber composition for tire tread and tire manufactured by using the same
KR101142552B1 (en) 2009-12-23 2012-05-08 한국타이어 주식회사 Rubber composition for tire and tire manufactured by using the same
KR101315110B1 (en) 2010-11-30 2013-10-07 한국타이어 주식회사 Tread rubber composition and tire manufactured by using the same
KR20180038146A (en) * 2016-10-06 2018-04-16 주식회사 엘지화학 Rubber composition and tire comprising the same

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KR100715718B1 (en) * 2005-06-22 2007-05-08 금호타이어 주식회사 Pcr tread compound for pneumatic tire
KR100741402B1 (en) * 2006-06-30 2007-07-20 금호타이어 주식회사 Rubber compositions for tire tread
KR100815373B1 (en) 2007-06-27 2008-03-19 금호타이어 주식회사 Tire tread rubber composition and a tire using the same
KR101716058B1 (en) * 2015-12-15 2017-03-14 금호타이어 주식회사 Tire tread composition with improved dry performance and tire using the same

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Publication number Priority date Publication date Assignee Title
KR101016370B1 (en) 2008-09-22 2011-02-21 금호타이어 주식회사 Tire tread rubber composition
KR101133400B1 (en) 2009-12-22 2012-04-10 한국타이어 주식회사 Rubber Composition for Tire Tread and Air Injection Tire Using The Same
KR101142550B1 (en) * 2009-12-22 2012-05-08 한국타이어 주식회사 Rubber composition for tire tread and tire manufactured by using the same
KR101142552B1 (en) 2009-12-23 2012-05-08 한국타이어 주식회사 Rubber composition for tire and tire manufactured by using the same
KR101315110B1 (en) 2010-11-30 2013-10-07 한국타이어 주식회사 Tread rubber composition and tire manufactured by using the same
KR20180038146A (en) * 2016-10-06 2018-04-16 주식회사 엘지화학 Rubber composition and tire comprising the same
KR102167117B1 (en) * 2016-10-06 2020-10-16 주식회사 엘지화학 Rubber composition and tire comprising the same

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