KR100476010B1 - Tread rubber composition for passenger tire - Google Patents

Tread rubber composition for passenger tire Download PDF

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KR100476010B1
KR100476010B1 KR10-2002-0030012A KR20020030012A KR100476010B1 KR 100476010 B1 KR100476010 B1 KR 100476010B1 KR 20020030012 A KR20020030012 A KR 20020030012A KR 100476010 B1 KR100476010 B1 KR 100476010B1
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weight
parts
rubber composition
rubber
tread rubber
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KR10-2002-0030012A
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Korean (ko)
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KR20030092372A (en
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권동은
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금호타이어 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • 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
    • 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
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08K2201/011—Nanostructured additives
    • 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

Abstract

본 발명은 승용차 타이어용 트레드 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition for passenger car tires.

본 발명은 승용차용 타이어 트레드 고무조성물에 있어서, 이종 또는 삼성분의 고무성분에 대하여 나노클레이 및 폴리부타디엔을 병용 적용하여 보강충진제의 분산성을 향상시킬 수 있는 승용차용 타이어 트레드 고무조성물 및 동 조성물이 포함된 타이어의 제공을 목적으로 한다.In the tire tread rubber composition for passenger cars, the tire tread rubber composition and the composition for passenger cars which can improve the dispersibility of the reinforcing filler by applying a combination of nanoclay and polybutadiene with respect to the rubber component of heterogeneous or samsung powder It is aimed at providing the included tires.

본 발명은 유화중합 스티렌부타디엔 고무(E-SBR), 용액중합 스티렌부타디엔 고무(S-SBR), 부타디엔 고무(BR)를 각각 단독으로 사용하거나 또는 이들의 혼합물로 구성된 원료고무 100 중량부에 대하여 폴리부타디엔 4-12 중량부, 나노클레이 2-10 중량부 포함하는 것을 특징으로 한다.The present invention is based on 100 parts by weight of the raw material rubber composed of emulsion polymerization styrene butadiene rubber (E-SBR), solution polymerization styrene butadiene rubber (S-SBR), butadiene rubber (BR) alone or a mixture thereof. Butadiene 4-12 parts by weight, characterized in that it comprises 2-10 parts by weight of nanoclay.

Description

승용차 타이어용 트레드 고무조성물{Tread rubber composition for passenger tire}Tread rubber composition for passenger tires

본 발명은 승용차 타이어용 트레드 고무조성물에 관한 것으로서 보다 상세하게는 유화중합 스티렌부타디엔 고무(E-SBR), 용액중합 스티렌부타디엔 고무(S-SBR), 부타디엔 고무(BR)를 각각 단독으로 사용하거나 또는 이들의 혼합물로 구성된 원료고무 100 중량부에 대하여 폴리부타디엔 4-12 중량부, 나노클레이 2-10 중량부 포함하도록 하여 고무조성물의 보강충진제의 분산성을 향상시켜 경도, 300% 모듈러스, 인장물성 및 내마모성 특성이 향상된 트레드 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition for passenger car tires, and more specifically, emulsion-polymerized styrene-butadiene rubber (E-SBR), solution-polymerized styrene-butadiene rubber (S-SBR), butadiene rubber (BR) alone or each It contains 4-12 parts by weight of polybutadiene and 2-10 parts by weight of nanoclay based on 100 parts by weight of the raw material rubber composed of a mixture thereof, thereby improving the dispersibility of the reinforcing filler of the rubber composition to improve hardness, 300% modulus, tensile properties and The present invention relates to a tread rubber composition with improved wear resistance.

타이어의 구성에 있어서, 트레드는 타이어의 요구특성을 발현하는 중요한 구성성분의 하나로서 타이어의 트레드는 트레드 표면에 형성된 패턴, 트레드 고무의 구성성분에 따라 그 특성이 달라진다.In the configuration of a tire, the tread is one of the important components that express the required characteristics of the tire, the tread of the tire varies depending on the pattern formed on the surface of the tread, the composition of the tread rubber.

일반적으로 타이어에 사용하는 고무에 있어서, 단일 또는 이종 성분의 고무혼합물에 부타디엔 고무를 적정량 첨가하면 인장물성 등 제반특성을 유지하면서 내마모특성을 향상시킬 수 있다. 한편, 보강성 충진체인 카본블랙에 의한 고무의 보강성능은 종래 그 비표면적(입자경)과 구조가 지배적인 요인이라고 생각되고 구비특성에 대응한 다양한 품종이 있다. 그래서 고무성분과의 배합에 있어서는 용도특성에 적합한 다양한 종류의 카본블랙을 선택하여 사용하고 있다.In general, in a rubber used for a tire, when a proper amount of butadiene rubber is added to a rubber mixture of one or two components, wear resistance can be improved while maintaining various properties such as tensile properties. On the other hand, the reinforcing performance of rubber by carbon black, which is a reinforcing filler, is considered to be a predominant factor in its specific surface area (particle diameter) and structure, and there are various varieties corresponding to the characteristics of the equipment. Therefore, in blending with a rubber component, various kinds of carbon blacks suitable for application characteristics are selected and used.

타이어의 트레드고무는 차량의 이동시 지면과 직접 접촉하여 마모가 잘 발생하기 때문에 특히 내마모성이 중요한데 가혹한 주행조건하에서는 보다 고도의 내마모성을 요구하기 때문에 하드(hard)계 카본블랙을 적용하고 있다. 최근 타이어 주행의 가혹 조건하에서는 요구되어지는 성능도 고도화되고 특히 고내마모성과 저발열성을 겸비하는 것이 중요하다. 카본블랙은 비표면적과 구조가 크면 내마모성은 증대하지만 반면 발열성이 높게 되므로 양특성에는 이율배반적 관계가 있어 트레드 고무조성물에 고내마모성과 저발열성을 동시에 부여하는 것은 상당히 어려운 문제이다.Tread rubber of tires is particularly important because of its high wear resistance, because it is in direct contact with the ground when the vehicle moves, and it requires harder carbon black under severe driving conditions. Recently, under the harsh conditions of tire running, the required performance is also advanced, and it is particularly important to have high wear resistance and low heat generation. Carbon black has high specific surface area and structure, but wear resistance is increased, whereas heat generation is high, so there is a double rate relationship between the two properties. Therefore, it is very difficult to simultaneously provide high wear resistance and low heat generation property to the tread rubber composition.

이문제를 해결하기 위해서 서로다른 특성을 가진 충진제를 사용하는 방법이 제안되고 있다. 즉 단일 또는 혼합물로 이루어진 원료고무에 단일 또는 이종의 보강충진제를 사용하여 사용조건 및 요구특성을 만족하는 고무조성물을 제공할 수 있으나 이는 내구력, 승차감, 소음, 진동, 조종안정성, 내마모특성 등의 서로다른 특성을 조절하는데 어려운 문제가 있다.In order to solve this problem, a method of using fillers having different properties has been proposed. In other words, it is possible to provide a rubber composition that satisfies the conditions of use and required characteristics by using a single or heterogeneous reinforcing filler in the raw material rubber consisting of a single or a mixture, but this can include durability, ride comfort, noise, vibration, steering stability, and wear resistance. There is a problem in controlling the different characteristics.

이를 해결하기 위해 이종의 충진제가 각각 혼합된 혼련물을 먼저 얻고, 그 다음 이들의 혼련물을 다시 혼합하는 방안이 제시되고 있다. 즉 충진제로서 카본블랙이 혼합된 혼련물을 얻고, 이와는 별도로 충진제로서 실리카가 혼합된 혼련물을 얻으며, 카본블랙이 첨가된 혼련물과 실리카가 첨가된 혼련물을 다시 혼합하는 것이다. 이 경우 보강충진제들이 고무내에서 어느정도 잘 분산되는가 하는 분산성이 주요한 관건으로서 보강충진제의 분산이 어느 수준 이하로 낮게 되면 도리어 배합고무의 인장물성 및 마모특성과 같은 제반물성이 하락하는 문제가 있다. In order to solve this problem, a method of firstly obtaining a kneaded mixture of different types of fillers and then mixing the kneaded mixtures has been proposed. That is, to obtain a kneaded product in which carbon black is mixed as a filler, and to obtain a kneaded product in which silica is mixed as a filler separately, and to mix the kneaded product to which carbon black is added and the kneaded mixture to which silica is added. In this case, the dispersibility of how well the reinforcing fillers are dispersed in the rubber is a key factor, and when the dispersion of the reinforcing filler is lowered to a certain level or less, there is a problem that various physical properties such as tensile properties and wear characteristics of the compounded rubber are lowered.

본 발명은 상기와 같이 타이어의 트레드 고무조성물에 있어서, 카본블랙, 실리카와 같은 보강충진제의 분산성을 향상시키기 위해 노력하던중 이종 또는 삼성분의 고무성분에 대하여 분자단위 크기의 나노복합재료의 일종인 나노클레이를 일정량 적용하고, 폴리부타디엔을 병용 적용하면 보강충진제의 분산성이 향상됨을 알게 되어 본 발명을 완성하게 되었다.The present invention in the tread rubber composition of the tire as described above, while trying to improve the dispersibility of the reinforcing fillers such as carbon black, silica, a kind of nanocomposite material of the molecular unit size with respect to the rubber component of the heterogeneous or samsung powder Applying a certain amount of phosphorus nanoclay, combined application of polybutadiene was found to improve the dispersibility of the reinforcing filler to complete the present invention.

즉, 본 발명은 승용차용 타이어 트레드 고무조성물에 있어서, 이종 또는 삼성분의 고무성분에 대하여 나노클레이 및 폴리부타디엔을 병용 적용하여 보강충진제의 분산성을 향상시킬 수 있는 승용차용 타이어 트레드 고무조성물 및 동 조성물이 포함된 타이어의 제공을 목적으로 한다. That is, in the tire tread rubber composition for passenger cars, the tire tread rubber composition for passenger cars which can improve the dispersibility of the reinforcing filler by applying nanoclay and polybutadiene in combination with the rubber component of the heterogeneous or samsung powder. It is an object to provide a tire containing the composition.

본 발명의 승용차 타이어용 트레드 고무조성물은 공지의 승용차 타이어용 트레드 고무조성물에 있어서, 유화중합 스티렌부타디엔 고무(E-SBR), 용액중합 스티렌부타디엔 고무(S-SBR), 부타디엔 고무(BR)를 각각 단독으로 사용하거나 또는 이들의 혼합물로 구성된 원료고무 100 중량부에 대하여 폴리부타디엔 4-12 중량부, 나노클레이 2-10 중량부 포함하는 것을 특징으로 한다. The tread rubber composition for passenger car tires of the present invention is a known tread rubber composition for passenger car tires. It is characterized by including 4-12 parts by weight of polybutadiene, 2-10 parts by weight of nanoclay, based on 100 parts by weight of the raw material rubber, which is used alone or in a mixture thereof.

폴리부타디엔은 보강충진제인 카본블랙 및 실리카의 분산성을 개선시켜 이들을 함유한 고무의 인장강도를 향상시켜 결과적으로 고무의 내마모성능을 향상시킬 수 있는데 본 발명에서는 이러한 기능을 할 수 있는 폴리부타디엔은 1,2 비닐함량이 30-90 중량%, 점도가 7.5-2500 poise, 수평균 분자량이 2500-9000 인 것을 사용할 수 있다. Polybutadiene improves the dispersibility of the carbon black and silica reinforcing fillers to improve the tensile strength of the rubber containing them and consequently improve the wear resistance of the rubber. In the present invention, polybutadiene can perform such a function. 2, vinyl content of 30-90% by weight, viscosity of 7.5-2500 poise, number average molecular weight of 2500-9000 can be used.

본 발명에서 다양한 조건의 특성을 가지는 폴리부타디엔을 사용한바 상기의 특성을 가지는 폴리부타디엔을 사용시 본 발명의 목적에 가장 부합하는 고무조성물을 얻을 수 있었다.In the present invention, the polybutadiene having the characteristics of various conditions was used. When the polybutadiene having the above characteristics was used, the rubber composition most suitable for the purpose of the present invention was obtained.

나노클레이는 실리케이트 층상구조의 점토광물을 나노 크기의 시트상의 기본단위로 박리하여 고분자 수지와 복합시킴으로서 고분자의 낮은 기계적 물성을 개선하여 고무조성물의 인장강도와 모듈러스 등의 기계적 강도를 향상시키는 역할을 하는 것으로서 본 발명의 나노클레이는 클레이 함량이 10-30 중량%, 알킬페놀수지 함량이 70-90 중량% 포함하는 것을 사용할 수 있다. 또한 나노클레이에 있어서, 다양한 특성의 클레이를 사용한바 클레이는 비중이 2.3±0.5, 층간높이가 0.5-5.0nm, 평균입자경이 1.0-8.0㎛인 것을 사용하는 것이 좋다.Nanoclay is used to improve the low mechanical properties of polymers by improving the low mechanical properties of polymers by separating clay minerals of silicate layer structure into basic units of nano-sized sheets and compounding them with polymer resins. As the nanoclay of the present invention can be used that contains 10-30% by weight of clay, 70-90% by weight of alkylphenol resin. In addition, in the nanoclays, clays having various characteristics are used, and specific gravity of 2.3 ± 0.5, layer height of 0.5-5.0 nm, and average particle diameter of 1.0-8.0 μm may be used.

본 발명에서 원료고무 100 중량부에 대하여 폴리부타디엔은 4 중량부 미만 사용할 경우 분산성의 개선효과가 나타나지 않으며, 12 중량부를 초과할 경우 물성유지가 어려워 오히려 내마모성능이 하락할 가능성이 있으며, 나토클레이는 사용량이 2 중량부 미만일 경우 물성유지가 어렵고 내마모성능의 개선효과가 나타나지 않으며, 10 중량부 초과할 경우 배합시 분산성이 불량하여 물성이 떨어져 오히려 내마모성능이 하락할 가능성이 있다.Polybutadiene is less than 4 parts by weight of the raw material rubber in the present invention does not appear to improve the dispersibility when used less than 4 parts by weight, it is difficult to maintain the physical properties when exceeding 12 parts by weight, rather wear resistance is likely to decrease, If it is less than 2 parts by weight, it is difficult to maintain the physical properties and does not improve the wear resistance. If it exceeds 10 parts by weight, the dispersibility is poor when blending, and thus the wear resistance may decrease.

본 발명에서 보강충진제로 사용할 수 있는 카본블랙은 ASTM Tint(% of IRB#3) 99∼124, DBP 흡착가(cm3/gm) 0.72∼1.25, ASTM IODINE NUMBER(mg/gm) 67∼148의 특성을 가지며, 실리카는 표면적(m2/g) 155∼165, 구조(㎖/100g) 127∼191, 공극부피(micro volune, cc/g) 0.0086∼0.019, 결합고무량(%) 20.2∼27.5의 특성을 갖는다.Carbon black that can be used as a reinforcing filler in the present invention is ASTM Tint (% of IRB # 3) 99 ~ 124, DBP adsorption value (cm 3 / gm) 0.72 ~ 1.25, ASTM IODINE NUMBER (mg / gm) 67 ~ 148 Silica has a surface area (m 2 / g) of 155 to 165, structure (ml / 100 g) of 127 to 191, pore volume (micro volune, cc / g) of 0.0086 to 0.019, binding rubber (%) of 20.2 to 27.5. Has characteristics.

한편 본 발명은 전기에서 언급한 트레드 고무조성물에 의해 제조한 트레드를 함유하는 승용차용 타이어를 제공할 수 있다.On the other hand, the present invention can provide a tire for a passenger car containing a tread manufactured by the tread rubber composition mentioned in the foregoing.

이하 본 발명을 다음의 실시예 및 시험예에 의하여 설명하고자 한다. 그러나 이들은 본 발명의 일실시예로서 이들이 본 발명의 권리범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described by the following examples and test examples. However, these are not limited to the scope of the present invention as an embodiment of the present invention.

<비교예>Comparative Example

하기의 표 1과 같이 유화중합 스티렌부타디엔 고무(SBR-1500) 50 중량부, 용액중합 스티렌부타디엔 고무(Nippon JEON NS-116) 20 중량부, 부타디엔 고무 30 중량부의 혼합물로 구성된 원료고무 100 중량부에 대하여 기타 공정조제로서 카본블랙(N330) 30 중량부, 실리카(Z-157P) 30 중량부, 커플링제(SI-69), 공정오일 25 중량부, 스테아린산 2 중량부, 아연화 3 중량부, 가류제 2 중량부, 가황촉진제 2.0 중량부를 첨가한 후 공지의 방법을 이용하여 자동차 타이어용 트레드 고무를 제조하였다.50 parts by weight of emulsion-polymerized styrene-butadiene rubber (SBR-1500), 20 parts by weight of solution-polymerized styrene-butadiene rubber (Nippon JEON NS-116), and 100 parts by weight of raw rubber composed of a mixture of 30 parts by weight of butadiene rubber as shown in Table 1 below. 30 parts by weight of carbon black (N330), 30 parts by weight of silica (Z-157P), coupling agent (SI-69), 25 parts by weight of process oil, 2 parts by weight of stearic acid, 3 parts by weight of zinc, and vulcanizing agent After adding 2 parts by weight, 2.0 parts by weight of a vulcanization accelerator, a tread rubber for an automobile tire was manufactured using a known method.

보강충진제인 카본블랙은 ASTM Tint(% of IRB#3) 104, DBP 흡착가(cm3/gm) 1.01, ASTM IODINE NUMBER(mg/gm) 82의 특성을 가진 것을 사용하였다.Carbon black as a reinforcing filler was used having properties of ASTM Tint (% of IRB # 3) 104, DBP adsorption value (cm 3 / gm) 1.01, and ASTM IODINE NUMBER (mg / gm) 82.

<실시예 1><Example 1>

하기의 표 1과 같이 유화중합 스티렌부타디엔 고무(SBR-1500) 50 중량부, 용액중합 스티렌부타디엔 고무(Nippon JEON NS-116) 20 중량부, 부타디엔 고무 30 중량부의 혼합물로 구성된 원료고무 100 중량부에 대하여 기타 공정조제로서 카본블랙(N330) 30 중량부, 실리카(Z-157P) 30 중량부, 커플링제(SI-69), 공정오일 25 중량부, 스테아린산 2 중량부, 아연화 3 중량부, 가류제 2 중량부, 가황촉진제 2.0 중량부, 폴리부타디엔 4 중량부, 나노클레이 2 중량부를 첨가한 후 공지의 방법을 이용하여 자동차 타이어용 트레드 고무를 제조하였다.50 parts by weight of emulsion-polymerized styrene-butadiene rubber (SBR-1500), 20 parts by weight of solution-polymerized styrene-butadiene rubber (Nippon JEON NS-116), and 100 parts by weight of raw rubber composed of a mixture of 30 parts by weight of butadiene rubber as shown in Table 1 below. 30 parts by weight of carbon black (N330), 30 parts by weight of silica (Z-157P), coupling agent (SI-69), 25 parts by weight of process oil, 2 parts by weight of stearic acid, 3 parts by weight of zinc, and vulcanizing agent After adding 2 parts by weight, 2.0 parts by weight of vulcanization accelerator, 4 parts by weight of polybutadiene, and 2 parts by weight of nanoclay, a tread rubber for an automobile tire was manufactured using a known method.

상기에서 보강충진제인 카본블랙은 ASTM Tint(% of IRB#3) 104, DBP 흡착가(cm3/gm) 1.01, ASTM IODINE NUMBER(mg/gm) 82의 특성을 가진 것을 사용하였다. 또한 폴리부타디엔은 1,2 비닐함량이 90 중량%, 점도가 2500 poise, 수평균 분자량이 5200 인 것을 사용하였으며, 나노클레이는 비중이 2.3±0.05, 층간높이가 3.3nm, 평균입자경이 6.5㎛인 클레이 함량이 15 중량%, 알킬페놀수지 함량이 85 중량%로 구성되며 비중이 1.5±0.2 인 것을 사용하였다.Carbon black as a reinforcing filler was used having properties of ASTM Tint (% of IRB # 3) 104, DBP adsorption value (cm 3 / gm) 1.01, and ASTM IODINE NUMBER (mg / gm) 82. In addition, polybutadiene was used as the 1,2-vinyl content of 90% by weight, viscosity of 2500 poise, number average molecular weight of 5200, nanoclay has a specific gravity of 2.3 ± 0.05, interlayer height of 3.3nm, average particle diameter of 6.5㎛ The clay content was 15 wt%, the alkylphenol resin content was 85 wt%, and the specific gravity was 1.5 ± 0.2.

<실시예 2><Example 2>

나노클레이 8 중량부 사용하는 것을 제외하고는 상기 실시예 1과 같은 방법으로 자동차 타이어용 트레드 고무를 제조하였다.A tread rubber for automobile tires was manufactured in the same manner as in Example 1, except that 8 parts by weight of nanoclay was used.

<실시예 3><Example 3>

폴리부타디엔 8 중량부, 나노클레이 8 중량부 사용하는 것을 제외하고는 상기 실시예 1과 같은 방법으로 자동차 타이어용 트레드 고무를 제조하였다.Tread rubber for automobile tires was prepared in the same manner as in Example 1, except that 8 parts by weight of polybutadiene and 8 parts by weight of nanoclay were used.

<실시예 4><Example 4>

폴리부타디엔 12 중량부, 나노클레이 8 중량부 사용하는 것을 제외하고는 상기 실시예 1과 같은 방법으로 자동차 타이어용 트레드 고무를 제조하였다.Tread rubber for automobile tires was prepared in the same manner as in Example 1, except that 12 parts by weight of polybutadiene and 8 parts by weight of nanoclay were used.

표 1. 비교예 및 실시예의 고무조성물(단위 : 중량부)Table 1. Rubber compositions of Comparative Examples and Examples (unit: parts by weight)

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 E-SBRE-SBR 5050 5050 5050 5050 5050 S-SBRS-SBR 2020 2020 2020 2020 2020 BRBR 3030 3030 3030 3030 3030 폴리부타디엔Polybutadiene -- 44 44 88 1212 카본블랙Carbon black 3030 3030 3030 3030 3030 실리카Silica 3030 3030 3030 3030 3030 커플링제Coupling agent 33 33 33 33 33 공정오일Process oil 2525 33 33 33 33 스테아린산Stearic acid 22 22 22 22 22 노화방지제Anti-aging 22 22 22 22 22 아연화Zincification 33 33 33 33 33 나노클레이Nanoclay -- 22 88 88 88 가류제Vulcanizing agent 22 22 22 22 22 가황촉진제Vulcanization accelerator 22 22 22 22 22

<시험예><Test Example>

상기 비교예 및 실시예에 의해 제조한 트레드 고무를 ASTM 규격에 준하여 경도, 300% 모듈러스 인장강도, 신장율, 발열, PICO 마모, 실리카 분산성 등의 특성을 측정하여 그 결과를 아래의 표 2에 나타내었다.The tread rubbers prepared according to Comparative Examples and Examples were measured in accordance with ASTM standards, such as hardness, 300% modulus tensile strength, elongation, heat generation, PICO wear, silica dispersibility, and the results are shown in Table 2 below. It was.

표 2. 비교예 및 실시예 고무의 특성 결과 Table 2. Property Results of Comparative Examples and Examples Rubber

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 경도Hardness 6868 6969 7171 7171 7171 300% 모듈러스(kgf/cm2)300% modulus (kgf / cm 2 ) 115115 120120 120120 120120 120120 인장강도(kgf/cm2)Tensile strength (kgf / cm 2 ) 220220 225225 235235 235235 235235 신장율(%)Elongation (%) 500500 510510 500500 500500 500500 리바운드(%)rebound(%) 2828 2626 2828 2828 2828 발열(℃)Fever (℃) 2828 2727 2626 2626 2626 PICO 마모(mg)PICO wear (mg) 2323 2121 1818 1818 1818 분산성(%)Dispersibility (%) 7575 8888 9292 9494 9595

상기 표 2의 시험예의 결과에서처럼 본 발명에서 나노클레이, 폴리부타디엔을 첨가량이 증가함에 따라 실리카의 분산성이 개선되어 경도, 300% 모듈러스, 인장물성 및 내마모성 특성이 향상된 고무를 얻을 수 있다. As in the results of the test example of Table 2, in the present invention, as the amount of addition of nanoclay and polybutadiene is increased, the dispersibility of silica may be improved to obtain a rubber having improved hardness, 300% modulus, tensile properties, and wear resistance.

Claims (4)

공지의 승용차 타이어용 트레드 고무조성물에 있어서,In a known tread rubber composition for passenger car tires, 유화중합 스티렌부타디엔 고무(E-SBR), 용액중합 스티렌부타디엔 고무(S-SBR), 부타디엔 고무(BR)를 각각 단독으로 사용하거나 또는 이들의 혼합물로 구성된 원료고무 100 중량부에 대하여 폴리부타디엔 4-12 중량부, 나노클레이 2-10 중량부 포함하는 것을 특징으로 하는 승용차 타이어용 트레드 고무조성물.Polybutadiene 4-based on 100 parts by weight of the raw material rubber composed of emulsion polymerization styrene butadiene rubber (E-SBR), solution polymerization styrene butadiene rubber (S-SBR) and butadiene rubber (BR) alone or as a mixture thereof. A tread rubber composition for a passenger car tire, comprising 12 parts by weight and 2-10 parts by weight of nanoclay. 제 1 항에 있어서, 폴리부타디엔은 1,2 비닐함량이 30-90 중량%, 점도가 7.5-2500 poise, 수평균 분자량이 2500-9000 임을 특징으로 하는 승용차 타이어용 트레드 고무조성물.The tread rubber composition according to claim 1, wherein the polybutadiene has a vinyl content of 30-90 wt%, a viscosity of 7.5-2500 poise, and a number average molecular weight of 2500-9000. 제 1 항에 있어서, 나노클레이는 비중이 2.3±0.5, 층간높이가 0.5-5.0nm, 평균입자경이 1.0-8.0㎛인 클레이 함량이 10-30 중량%, 알킬페놀수지 함량이 70-90 중량% 포함함을 특징으로 하는 승용차 타이어용 트레드 고무조성물The method of claim 1, wherein the nanoclay has a specific gravity of 2.3 ± 0.5, layer height of 0.5-5.0 nm, average particle diameter of 1.0 to 8.0㎛ clay content of 10-30% by weight, alkylphenol resin content of 70-90% by weight Tread rubber composition for passenger car tires, comprising 특허청구범위 제 1 항 내지 제 3 항중 선택된 어느 한항의 트레드 고무조성물을 포함하는 트레드를 구비한 승용차용 타이어Tires for passenger cars having a tread comprising the tread rubber composition of any one of claims 1 to 3.
KR10-2002-0030012A 2002-05-29 2002-05-29 Tread rubber composition for passenger tire KR100476010B1 (en)

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KR100718168B1 (en) 2005-09-30 2007-05-15 금호타이어 주식회사 Rubber composition for tire including nano-filler and coupling agent
KR100771692B1 (en) * 2006-09-28 2007-10-31 금호타이어 주식회사 Tire tread composition improved rolling resistant property
KR100827321B1 (en) 2007-03-27 2008-05-07 금호타이어 주식회사 Tire tread rubber composition
KR200454040Y1 (en) * 2009-01-29 2011-06-14 알루텍 (주) Banner Hanger for Street Light

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