KR100542279B1 - Tread rubber composition for passenger car - Google Patents

Tread rubber composition for passenger car Download PDF

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KR100542279B1
KR100542279B1 KR1020030035681A KR20030035681A KR100542279B1 KR 100542279 B1 KR100542279 B1 KR 100542279B1 KR 1020030035681 A KR1020030035681 A KR 1020030035681A KR 20030035681 A KR20030035681 A KR 20030035681A KR 100542279 B1 KR100542279 B1 KR 100542279B1
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South Korea
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weight
parts
tread rubber
rubber composition
passenger car
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KR1020030035681A
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Korean (ko)
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KR20040104160A (en
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권동은
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금호타이어 주식회사
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/346Clay
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0016Compositions of the tread
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives

Abstract

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

본 발명은 주요 구성성분으로 나노복합재료를 첨가하여 보강충진제의 분산성을 향상시킴으로써 인장물성을 비롯한 스노우성능 및 내마모특성이 우수한 승용차 타이어용 트레드 고무조성물의 제공을 목적으로 한다.An object of the present invention is to provide a tread rubber composition for passenger car tires having excellent snow performance and wear resistance properties by adding nanocomposite as a main component to improve dispersibility of reinforcing fillers.

상기의 목적을 달성하기 위해 본 발명의 스노우 성능이 향상된 승용차 타이어용 트레드 고무조성물은 공지의 승용차 타이어용 트레드 고무조성물에 있어서, 원료고무 100중량부에 대하여 비중이 1.5±0.2 이며, 클레이 50∼80중량% 및 폴리부타디엔 20∼50중량%으로 이루어진 나노복합재료 2∼10중량부 포함한다.In order to achieve the above object, the tread rubber composition for passenger car tires having improved snow performance according to the present invention has a specific gravity of 1.5 ± 0.2 based on 100 parts by weight of the raw material rubber in a known tread rubber composition for passenger car tires. 2 to 10 parts by weight of the nanocomposite material consisting of 20% to 50% by weight of polybutadiene.

본 발명에서 나노복합재료중 클레이는 비중이 2.3±0.5, 층간높이가 0.5∼5.0nm, 평균입자경이 1.0∼8.0㎛이고, 폴리부타디엔은 1,2 비닐함량이 30∼90중량% 함유하며, 점도가 7.5∼2500poise, 수평균 분자량이 2500∼9000 이다.Among the nanocomposites in the present invention, the clay has a specific gravity of 2.3 ± 0.5, an interlayer height of 0.5-5.0 nm, an average particle diameter of 1.0-8.0 μm, polybutadiene contains 1,2-vinyl content of 30-90 wt%, and a viscosity Is 7.5 to 2500 poise and the number average molecular weight is 2500 to 9000.

Description

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

본 발명은 승용차 타이어용 트레드 고무조성물에 관한 것이다. 보다 상세하게는 나노복합재료를 첨가하여 보강충진제의 분산성을 향상시킴으로써 인장물성을 비롯한 스노우성능 및 내마모특성이 우수한 승용차 타이어용 트레드 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition for passenger car tires. More specifically, the present invention relates to a tread rubber composition for automobile tires having excellent snow performance and abrasion resistance, including tensile properties by adding nanocomposites to improve dispersibility of reinforcing fillers.

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 용도특 성에 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 rubber components, various types of carbon black suitable for application characteristics are selected and used.

타이어의 트레드 고무는 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.

이 문제를 해결하기 위해서 서로 다른 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 서로 다른 특성을 조절하는데 어려운 문제가 있다.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 어느 정도 잘 분산되는가 하는 분산성이 주요한 관건으로서 보강충진제의 분산이 어느 수준 이하로 낮게 되면 도리어 배합 고무의 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 thereof 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 the main issue. When the dispersion of the reinforcing filler is lowered to a certain level or less, there is a problem that the overall physical properties such as the tensile and wear properties of the compounded rubber decrease. .

본 발명은 주요 구성성분으로 나노복합재료를 첨가하여 보강충진제의 분산성을 향상시킴으로써 인장물성을 비롯한 스노우성능 및 내마모특성이 우수한 승용차 타이어용 트레드 고무조성물의 제공을 목적으로 한다.
An object of the present invention is to provide a tread rubber composition for passenger car tires having excellent snow performance and wear resistance properties by adding nanocomposite as a main component to improve dispersibility of reinforcing fillers.

상기의 목적을 달성하기 위해 본 발명의 스노우 성능이 향상된 승용차 타이어용 트레드 고무조성물은 공지의 승용차 타이어용 트레드 고무조성물에 있어서, 원료고무 100중량부에 대하여 나노복합재료 2∼10중량부 포함한다.In order to achieve the above object, the tread rubber composition for passenger car tires having improved snow performance according to the present invention includes a known composite tread rubber composition for passenger car tires, and includes 2 to 10 parts by weight of the nanocomposite material with respect to 100 parts by weight of the raw material rubber.

본 발명에서 원료고무는 천연고무, 용액중합 스티렌-부타디엔 고무, 유화중합 스티렌-부타디엔 고무, 부타디엔 고무, 스티렌 고무, 이소프렌 고무와 같은 합성고무를 각각 단독으로 사용하거나 또는 천연고무와 합성고무가 혼합되어 이루어진 2성분 이상의 혼합고무를 사용할 수 있다. 일예로 후술하는 본 발명의 실시예에서는 천연고무 50중량부, 용액중합 스티렌-부타디엔 고무 20중량부 및 부타디엔 고무 30중량부로 이루어진 것을 원료고무로 사용한다. In the present invention, the raw material rubber is a synthetic rubber such as natural rubber, solution-polymerized styrene-butadiene rubber, emulsion-polymerized styrene-butadiene rubber, butadiene rubber, styrene rubber, isoprene rubber alone or natural rubber and synthetic rubber are mixed It is possible to use a mixed rubber consisting of two or more components. In an embodiment of the present invention to be described below as an example, the raw rubber is composed of 50 parts by weight of natural rubber, 20 parts by weight of solution-polymerized styrene-butadiene rubber and 30 parts by weight of butadiene rubber.

본 발명에서 나노복합재료는 보강충진제인 카본블랙 및 실리카의 분산성을 개선시켜 인장물성을 비롯한 스노우성능 및 내마모특성을 향상시킬 수 있다. 본 발명에서 이러한 나노복합재료는 원료고무 100중량부에 대하여 2중량부 미만 사용하 면 물성은 유지되나 스노우성능, 내마모특성의 개선효과가 나타나지 않는다. 또한 10중량부 초과 사용하면 배합시 분산성이 불량하여 물성이 감소할 뿐만 아니라 스노우성능, 내마모특성이 하락할 우려가 있다. 따라서 본 발명에서 나노복합재료는 원료고무 100중량부에 대하여 2∼10중량부 사용하는 것이 좋다.In the present invention, the nanocomposite material may improve the dispersibility of carbon black and silica, which are reinforcing fillers, and improve snow performance and wear resistance, including tensile properties. In the present invention, when the nanocomposite material is used in less than 2 parts by weight based on 100 parts by weight of the raw material rubber, physical properties are maintained, but there is no improvement in snow performance and wear resistance. In addition, when the content is more than 10 parts by weight, the dispersibility is poor at the time of blending, thereby reducing the physical properties, and there is a concern that the snow performance and the wear resistance may decrease. Therefore, the nanocomposite material in the present invention is preferably used 2 to 10 parts by weight based on 100 parts by weight of the raw material rubber.

본 발명에서 주요 구성성분인 나노복합재료는 비중이 1.5±0.2 이며, 클레이 50∼80중량% 및 폴리부타디엔 20∼50중량%으로 이루어져 있다. 이러한 나노복합재료중 클레이는 비중이 2.3±0.5, 층간높이가 0.5∼5.0nm, 평균입자경이 1.0∼8.0㎛이다. 또한 폴리부타디엔은 1,2 비닐함량이 30∼90중량% 함유하며, 점도가 7.5∼2500poise, 수평균 분자량이 2500∼9000 이다.The nanocomposite material, which is the main component in the present invention, has a specific gravity of 1.5 ± 0.2, and is composed of 50 to 80% by weight of clay and 20 to 50% by weight of polybutadiene. Among these nanocomposites, clay has a specific gravity of 2.3 ± 0.5, an interlayer height of 0.5-5.0 nm, and an average particle diameter of 1.0-8.0 μm. In addition, polybutadiene contains 30 to 90% by weight of 1,2 vinyl, has a viscosity of 7.5 to 2500 poise and a number average molecular weight of 2500 to 9000.

본 발명에서 다양한 조건의 특성 및 함량을 가지는 나노복합재료를 사용한바 상기의 특성 및 함량을 가지는 나노복합재료 사용시 본 발명의 목적에 가장 부합하는 고무조성물을 얻을 수 있다.In the present invention, a nanocomposite having various properties and contents is used, and thus a rubber composition most suitable for the purpose of the present invention may be obtained when the nanocomposite having the above properties and contents is used.

본 발명에서 보강충진제는 카본블랙과 실리카를 사용할 수 있다. 이러한 보강충진제 중에서 카본블랙은 ASTM Tint(% of IRB#3) 99∼124, DBP 흡착가(cm3/gm) 0.72∼1.25, ASTM IODINE NUMBER(mg/gm) 67∼148의 특성을 가진 것을 사용할 수 있다. 또한 실리카는 표면적(m2/g) 155∼165, 구조(㎖/100g) 127∼191, 공극부피(micro volune, cc/g) 0.0086∼0.019의 특성을 가진 것을 사용할 수 있다.Reinforcing filler in the present invention may be used carbon black and silica. Among these reinforcing fillers, carbon black may be one having ASTM Tint (% of IRB # 3) 99 to 124, DBP adsorption value (cm 3 / gm) 0.72 to 1.25, and ASTM IODINE NUMBER (mg / gm) 67 to 148. have. In addition, silica having the characteristics of surface area (m 2 / g) of 155 to 165, structure (ml / 100g) of 127 to 191, and void volume (micro volune, cc / g) of 0.0086 to 0.019 can be used.

본 발명은 상기에서 언급한 나노복합재료, 보강충진제 이외에 종래 승용차 타이어용 트레드 고무조성물에 사용되는 활성제, 공정오일, 노화방지제, 가류제, 가류촉진제를 포함하는 각종 첨가제를 포함한다. 그러나 이들은 종래 승용차 타이어용 스노우 트레드 고무조성물에 사용되는 일반적인 성분으로서 본원발명의 필수 구성성분이 아니므로 이하 자세한 내용은 생략하기로 한다.The present invention includes various additives including active materials, process oils, anti-aging agents, vulcanizing agents, and vulcanization accelerators, which are used in conventional tread rubber compositions for passenger car tires, in addition to the nanocomposite materials and reinforcing fillers mentioned above. However, these are general components used in snow tread rubber compositions for passenger car tires, and thus are not essential components of the present invention.

한편 본 발명은 위에서 언급한 트레드 고무조성물을 이용하여 통상적인 방법으로 제조한 트레드 고무를 함유하는 승용차용 타이어를 포함한다.On the other hand, the present invention includes a tire for a passenger car containing the tread rubber produced by a conventional method using the tread rubber composition mentioned above.

이하 본 발명을 다음의 비교예, 실시예 및 시험예에 의하여 설명하고자 한다. 그러나 이들은 본 발명의 일실시예로서 이들에 의해 본원발명의 권리범위가 한정되는 것은 아니다.
Hereinafter, the present invention will be described by the following comparative examples, examples and test examples. However, these are not limited to the scope of the present invention by them as an embodiment of the present invention.

<비교예>Comparative Example

하기의 표 1과 같은 조성을 이용하여 승용차 타이어용 트레드 고무를 제조하였다.Tread rubber for passenger car tires was prepared using the composition shown in Table 1 below.

원료고무로서 천연고무 50중량부, 스티렌-부타디엔 고무(SBR-1500, 금호석유화학) 20중량부 및 부타디엔 고무 30중량부로 이루어진 원료고무 100중량부에 대하여 카본블랙(N330) 50중량부, 실리카(Z-175) 30중량부, 실란커플링제(SI-69) 3중량부, 공정오일 40중량부, 스테아린산 2중량부, 노화방지제 2중량부, 아연화 3중량부, 가류제 2.0중량부, 가황촉진제(CZ) 2.0중량부를 벤버리 믹서에 넣고 160℃에서 30분간 가류하여 트레드 고무를 제조하였다.
50 parts by weight of carbon black (N330) and silica (100 parts by weight of raw rubber) consisting of 50 parts by weight of natural rubber, 20 parts by weight of styrene-butadiene rubber (SBR-1500, Kumho Petrochemical) and 30 parts by weight of butadiene rubber. Z-175) 30 parts by weight, 3 parts by weight of silane coupling agent (SI-69), 40 parts by weight of process oil, 2 parts by weight of stearic acid, 2 parts by weight of antioxidant, 3 parts by weight of zinc, 2.0 parts by weight of vulcanizing agent, vulcanization accelerator (CZ) 2.0 parts by weight was placed in a Benbury mixer and vulcanized at 160 ° C. for 30 minutes to prepare a tread rubber.

<실시예 1> <Example 1>                     

하기의 표 1과 같은 조성을 이용하여 승용차 타이어용 트레드 고무를 제조하였다.Tread rubber for passenger car tires was prepared using the composition shown in Table 1 below.

원료고무로서 천연고무(NR) 50중량부, 스티렌-부타디엔 고무(SBR-1500, 금호석유화학) 20중량부 및 부타디엔 고무(BR) 30중량부로 이루어진 원료고무 100중량부에 대하여 카본블랙(N330) 50중량부, 실리카(Z-175) 28중량부, 실란커플링제(SI-69) 3중량부, 공정오일 40중량부, 스테아린산 2중량부, 노화방지제 2중량부, 아연화 3중량부, 나노복합재료 2중량부, 가류제 2.0중량부, 가황촉진제(N-cyclohexyl-2-benzothiazolsulfen amide, CZ) 2.0중량부를 벤버리 믹서에 넣고 160℃에서 30분간 가류하여 트레드 고무를 제조하였다.Carbon black (N330) based on 100 parts by weight of the raw material rubber consisting of 50 parts by weight of natural rubber (NR), 20 parts by weight of styrene-butadiene rubber (SBR-1500, Kumho Petrochemical) and 30 parts by weight of butadiene rubber (BR). 50 parts by weight, 28 parts by weight of silica (Z-175), 3 parts by weight of silane coupling agent (SI-69), 40 parts by weight of process oil, 2 parts by weight of stearic acid, 2 parts by weight of antioxidant, 3 parts by weight of zinc, nanocomposite 2 parts by weight of material, 2.0 parts by weight of vulcanizing agent and 2.0 parts by weight of vulcanization accelerator (N-cyclohexyl-2-benzothiazolsulfen amide, CZ) were placed in a Benbury mixer and vulcanized at 160 ° C. for 30 minutes to prepare a tread rubber.

상기에서 카본블랙은 ASTM Tint(% of IRB#3) 104, DBP 흡착가(cm3/gm) 1.01, ASTM IODINE NUMBER(mg/gm) 82의 특성을 가진 것을 사용하였다. In the carbon black, ASTM Tint (% of IRB # 3) 104, DBP adsorption value (cm 3 / gm) 1.01, ASTM IODINE NUMBER (mg / gm) was used that has the characteristics of 82.

실리카는 표면적(m2/g) 161, 구조(㎖/100g) 191, 공극부피(micro volune, cc/g) 0.018의 특성을 가진 것을 사용하였다.Silica was used having the characteristics of surface area (m 2 / g) 161, structure (ml / 100g) 191, pore volume (micro volune, cc / g) 0.018.

나노복합재료는 클레이 70중량%, 폴리부타디엔 30중량%으로 구성되며 비중이 1.5±0.2 이다. 이러한 나노복합재료중 클레이는 비중이 2.3±0.05, 층간높이가 3.3nm, 평균입자경이 6.5㎛이고, 폴리부타디엔은 1,2 비닐함량이 60중량% 함유하며, 점도가 500poise, 수평균 분자량이 6000 이다.
Nanocomposite material is composed of 70% by weight of clay and 30% by weight of polybutadiene and has a specific gravity of 1.5 ± 0.2. Among these nanocomposites, the specific gravity is 2.3 ± 0.05, the interlayer height is 3.3nm, the average particle size is 6.5㎛, and the polybutadiene contains 1,2 vinyl content 60% by weight, the viscosity is 500poise and the number average molecular weight is 6000 to be.

<실시예 2> <Example 2>                     

실리카를 25중량부 사용하고, 나노복합재료를 5중량부 사용하는 것을 제외하고는 상기 실시예 1과 동일한 조성성분, 함량 및 방법으로 트레드 고무를 제조하였다.
Tread rubber was prepared in the same composition, content and method as in Example 1, except that 25 parts by weight of silica and 5 parts by weight of nanocomposite were used.

<실시예 3><Example 3>

실리카를 20중량부 사용하고, 나노복합재료를 10중량부 사용하는 것을 제외하고는 상기 실시예 1과 동일한 조성성분, 함량 및 방법으로 트레드 고무를 제조하였다.
Tread rubber was prepared in the same composition, content and method as in Example 1, except that 20 parts by weight of silica was used and 10 parts by weight of the nanocomposite material.

<실시예 4><Example 4>

실리카를 15중량부 사용하고, 나노복합재료를 15중량부 사용하는 것을 제외하고는 상기 실시예 1과 동일한 조성성분, 함량 및 방법으로 트레드 고무를 제조하였다. Tread rubber was prepared in the same composition, content and method as in Example 1, except that 15 parts by weight of silica and 15 parts by weight of nanocomposite were used.

표 1. 비교예 및 실시예의 조성물Table 1. Compositions of Comparative Examples and Examples

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 천연고무Natural rubber 5050 5050 5050 5050 5050 스티렌-부타디엔 고무Styrene-butadiene rubber 2020 2020 2020 2020 2020 부타디엔 고무Butadiene rubber 3030 3030 3030 3030 3030 카본블랙Carbon black 5050 5050 5050 5050 5050 실리카Silica 3030 2828 2525 2020 1515 커플링제Coupling agent 33 33 33 33 33 공정오일Process oil 4040 4040 4040 4040 4040 스테아린산Stearic acid 22 22 22 22 22 노화방지제Anti-aging 22 22 22 22 22 아연화Zincification 33 33 33 33 33 나노복합재료Nanocomposite Materials -- 22 55 1010 1515 가류제Vulcanizing agent 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0 가류촉진제Vulcanization accelerator 2.02.0 2.02.0 2.02.0 2.02.0 2.02.0

<시험예><Test Example>

상기 비교예 및 실시예에서 제조한 고무시편을 ASTM 관련규정에 의하여 경도, 300% 모듈러스, 인장강도, 신장율, 리바운드, 발열, PICO 마모, 웨트 스키드(wet skid) 저항 및 분산성을 측정하고 그 결과를 아래의 표 2에 나타내었다
The rubber specimens prepared in Comparative Examples and Examples were measured for hardness, 300% modulus, tensile strength, elongation, rebound, heat generation, PICO wear, wet skid resistance, and dispersibility according to ASTM-related regulations. Is shown in Table 2 below

표 2. 물성 측정결과Table 2. Property Measurement Results

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 경도Hardness 6161 6161 6262 6262 6565 300% 모듈러스(kgf/cm2)300% modulus (kgf / cm 2 ) 8585 8585 8888 9090 100100 인장강도(kgf/cm2)Tensile strength (kgf / cm 2 ) 190190 195195 195195 205205 185185 신장율(%)Elongation (%) 500500 500500 500500 490490 470470 리바운드(%)rebound(%) 3030 2929 2828 2727 2525 발열(℃)Fever (℃) 2828 2828 2929 3030 3333 PICO 마모(mg)PICO wear (mg) 3838 3636 3535 3232 3939 웨트 스키드 저항(%)Wet Skid Resistance (%) 5858 6060 6262 6565 5858 분산성(%)Dispersibility (%) 8080 8282 8888 9292 8181

상기 표 2에서처럼 본 발명의 트레드 고무조성물에 있어서 나노복합재료의 첨가량이 증가할수록 충진제의 분산성이 개선되어 인장물성을 비롯한 제반물성과 스노우성능(웨트 스키드 저항), 내마모특성(PICO 마모)이 향상됨을 알 수 있다. 그러나 나노복합재료의 한계치인 10중량부를 초과하여 15중량부를 사용한 실시예 4의 결과는 나노복합재료를 2∼10중량부 사용한 실시예 1∼3의 고무의 특성과 비교시 분산성이 불량하여 물성이 감소할 뿐만 아니라 스노우성능, 내마모특성이 하락하고 있다. In the tread rubber composition of the present invention as shown in Table 2, the dispersibility of the filler is improved as the amount of the nanocomposite material is increased, so that various properties such as tensile properties, snow performance (wet skid resistance), and abrasion resistance (PICO wear) It can be seen that the improvement. However, the result of Example 4 using 15 parts by weight in excess of 10 parts by weight, which is the limit of the nanocomposite material, is poor in dispersibility compared to the properties of Examples 1 to 3 in which 2-10 parts by weight of the nanocomposite material is used. In addition to the decrease, snow performance and wear resistance are falling.                     

따라서 본 발명의 트레드 고무조성물에 있어서 나노복합재료는 원료고무 100중량부에 대하여 2∼10중량부 포함하는 것이 바람직하다.Therefore, the nanocomposite material in the tread rubber composition of the present invention preferably contains 2 to 10 parts by weight with respect to 100 parts by weight of the raw material rubber.

Claims (3)

공지의 승용차 타이어용 트레드 고무조성물에 있어서,In a known tread rubber composition for passenger car tires, 원료고무 100중량부에 대하여 클레이 함량이 50∼80중량%, 폴리부타디엔 함량이 20∼50중량%로 이루어지며 비중이 1.5±0.2인 나노복합재료 2∼10중량부 포함하는 것을 특징으로 하는 승용차 타이어용 트레드 고무조성물.A passenger car tire comprising 2 to 10 parts by weight of a nanocomposite having a clay content of 50 to 80% by weight and a polybutadiene content of 20 to 50% by weight and a specific gravity of 1.5 ± 0.2 based on 100 parts by weight of the raw material rubber. Tread rubber composition. 삭제delete 제1항에 있어서, 클레이는 비중이 2.3±0.5, 층간높이가 0.5∼5.0nm, 평균입자경이 1.0∼8.0㎛이며, 폴리부타디엔은 1,2 비닐함량이 30∼90 중량%, 점도가 7.5∼2500poise, 수평균 분자량이 2500∼9000 임을 특징으로 하는 트레드 고무조성물.The clay has a specific gravity of 2.3 ± 0.5, an interlayer height of 0.5-5.0 nm, an average particle diameter of 1.0-8.0 μm, and polybutadiene has a 1,2-vinyl content of 30-90 wt% and a viscosity of 7.5-0.5. A tread rubber composition having 2500 poise and a number average molecular weight of 2500 to 9000.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101177197B1 (en) 2010-07-19 2012-08-27 금호타이어 주식회사 Tire Rubber Composition Comprising Mucus Ingredients from Tideland and the Tire Using the Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101177197B1 (en) 2010-07-19 2012-08-27 금호타이어 주식회사 Tire Rubber Composition Comprising Mucus Ingredients from Tideland and the Tire Using the Same

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