KR100426066B1 - Tread rubber composition improved abrasion - Google Patents
Tread rubber composition improved abrasion Download PDFInfo
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- KR100426066B1 KR100426066B1 KR10-2001-0054954A KR20010054954A KR100426066B1 KR 100426066 B1 KR100426066 B1 KR 100426066B1 KR 20010054954 A KR20010054954 A KR 20010054954A KR 100426066 B1 KR100426066 B1 KR 100426066B1
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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
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- 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
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- 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
- C08K7/00—Use of ingredients characterised by shape
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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
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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
- 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
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Abstract
본 발명은 마모성능이 우수한 트레드 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition having excellent wear performance.
본 발명의 마모특성이 우수한 타이어 트레드 고무조성물은 공지의 타이어 트레드 고무조성물에 있어서, 원료고무 100 중량부중에서 비닐함량이 30% 이상인 용액중합 스티렌 부타디엔고무 20∼50 중량부 및 시스(cis) 함량이 98% 이상인 네오디미움 부타디엔 고무(Nd-BR) 5∼30 중량부 포함하는 것을 특징으로 한다.The tire tread rubber composition having excellent wear characteristics according to the present invention has a 20 to 50 parts by weight of solution-polymerized styrene butadiene rubber and a cis content in a known tire tread rubber composition having a vinyl content of 30% or more in 100 parts by weight of the raw rubber. It is characterized by containing 5 to 30 parts by weight of neodymium butadiene rubber (Nd-BR) of 98% or more.
본 발명은 공지의 트레드 고무조성물에 고스티렌 함량을 갖는 용액중합 스티렌 부타디엔 고무 및 유리전이온도가 낮은 네오미디움 부타디엔 고무를 첨가하여 마모특성을 향상시킬 수 있는 타이어 트레드 고무조성물의 제공을 목적으로 한다.An object of the present invention is to provide a tire tread rubber composition capable of improving wear characteristics by adding a solution-polymerized styrene butadiene rubber having a high styrene content to a known tread rubber composition and neodymium butadiene rubber having a low glass transition temperature.
Description
본 발명은 마모성능이 우수한 트레드 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition having excellent wear performance.
차량의 성능이 향상되고 고급화 됨에 따라 차량의 지지 및 움직임에 직접적인 역할을 하는 타이어에 대한 소비자들의 요구사양이 다양해지고 있어 타이어 제조회사들의 제품개발에 어려움이 점차적으로 증가하고 있다.As vehicle performance is improved and advanced, the demands of consumers for tires, which directly play a role in supporting and moving the vehicle, are diversified, which makes it difficult for tire manufacturers to develop products.
최근 전세계적으로 경제사정이 어려워짐에 따라서 타이어에 대한 소비자의 요구사양중 제일 중요한 것이 경제성이며 시대의 흐름에 맞추어 환경친화성에 대한 요구 역시 점차 증대되어 가고 있다. 타이어에 대한 소비자들의 경제성 및 환경친화에 대한 요구를 충족시키기 위해 현재 출시되고 있는 타이어 제품에 보강제로 실리카를 적용하거나 히스테리시스 로스(Hysteresis Loss)를 감소시키는 방법으로 저연비, 고내마모성을 지닌 타이어를 공급하고 있다.Recently, as the economic situation becomes difficult all over the world, the most important factor among consumers' requirements for tires is economical efficiency, and the demand for environmental friendliness is gradually increasing according to the times. In order to meet consumers' demands for economy and eco-friendliness of tires, we supply low-fuel, high wear-resistant tires by applying silica as a reinforcement or reducing hysteresis loss to tire products on the market. have.
그러나 히스테리시스 로스를 감소시키거나 반발탄성이 우수한 재료를 이용하여 제조되는 저연비, 내마모 성능의 타이어는 제동력 등 주행안정성 측면에서는 상대적으로 성능이 하락하여 급작스런 급제동이 필요하거나, 빗길에서의 운전, 고하중 상태에서의 고속주행시 항상 사고의 위험성이 존재하는 문제점이 있다.However, low fuel consumption and abrasion resistance tires manufactured with materials that reduce hysteresis loss or have high resilience are inferior in terms of driving stability, such as braking force, requiring sudden braking, driving on rainy roads, and heavy loads. There is a problem that there is always a risk of accident during high-speed driving in the state.
본 발명은 공지의 트레드 고무조성물에 고스티렌 함량을 갖는 용액중합 스티렌 부타디엔 고무 및 유리전이온도가 낮은 네오미디움 부타디엔 고무를 첨가하여 마모특성을 향상시킬 수 있는 타이어 트레드 고무조성물의 제공을 목적으로 한다.An object of the present invention is to provide a tire tread rubber composition capable of improving wear characteristics by adding a solution-polymerized styrene butadiene rubber having a high styrene content to a known tread rubber composition and neodymium butadiene rubber having a low glass transition temperature.
상기의 목적을 달성하기 위하여 본 발명의 마모특성이 우수한 타이어 트레드 고무조성물은 공지의 타이어 트레드 고무조성물에 있어서, 원료고무 100 중량부중에서 비닐함량이 30% 이상인 용액중합 스티렌 부타디엔고무 20∼50 중량부 및 시스(cis) 함량이 98% 이상인 네오디미움 부타디엔 고무(Nd-BR) 5∼30 중량부 포함하는 것을 특징으로 한다.In order to achieve the above object, the tire tread rubber composition having excellent wear characteristics of the present invention is a known tire tread rubber composition in which 20 to 50 parts by weight of a solution-polymerized styrene butadiene rubber having a vinyl content of 30% or more in 100 parts by weight of the raw material rubber. And 5-30 parts by weight of neodymium butadiene rubber (Nd-BR) having a cis content of 98% or more.
상기에서 원료고무는 천연고무, 천연고무와 합성고무의 혼합물, 합성고무들의 혼합물 중에서 선택된 하나를 사용할 수 있으면, 합성고무는 통상적으로 타이어 고무조성물에 사용할 수 있는 것은 어떠한 것을 사용하여도 좋으나 보다 바람직하기로는 타이어 트레드 고무에 사용할 수 있는 유화중합 스티렌부타디엔 고무, 용액중합 스티렌부타디엔 고무, 부타디엔 고무, 스티렌 고무, 부타디엔 고무 또는 아크릴로니트릴 고무를 사용할 수 있다.Wherein the raw material rubber may be one selected from natural rubber, a mixture of natural rubber and synthetic rubber, a mixture of synthetic rubber, synthetic rubber may be used in the tire rubber composition, but may be used any more preferably Emulsified polymerized styrene butadiene rubber, solution-polymerized styrene butadiene rubber, butadiene rubber, styrene rubber, butadiene rubber or acrylonitrile rubber which can be used for tire tread rubber can be used.
본 발명에서 비닐함량이 30% 이상 함유된 용액중합 스티렌 부타디엔고무는 원료고무중 20∼50 중량부 사용시 본 발명의 목적인 마모특성을 향상시키는 타이어 트레드 고무조성물을 얻을 수 있다.In the present invention, the solution-polymerized styrene butadiene rubber containing 30% or more of vinyl may obtain a tire tread rubber composition which improves wear characteristics, which is an object of the present invention, when 20 to 50 parts by weight of the raw material rubber is used.
네오디미움 부타디엔 고무(Nd-BR)는 부타디엔 고무를 합성시 네오디미움 (Neodymium, Nd) 촉매를 사용한 부타디엔 고무로서 시스(cis-) 함량이 높고, 낮은 유리전이온도를 갖음으로서 마모특성이 우수하게 된다. 본 발명에서는 이러한 네오디미움 부타디엔 고무를 원료고무 중량에 대하여 5∼30 중량부 사용시 본 발명의 목적인 마모특성이 향상된 타이어 트레드 고무조성물을 얻을 수 있다.Neodymium butadiene rubber (Nd-BR) is a butadiene rubber using neodymium (Nd) catalyst when synthesizing butadiene rubber. It has high cis- content and low glass transition temperature. Done. In the present invention, when the neodymium butadiene rubber is used in an amount of 5 to 30 parts by weight based on the weight of the raw rubber, a tire tread rubber composition having improved wear characteristics, which is the object of the present invention, can be obtained.
본 발명의 원료고무에 포함되는 용액중합 스티렌 부타디엔 고무 및 네오디미움 부타디엔 고무에 있어서 다양한 유리전이온도(Tg)의 것을 실험적으로 사용한바 용액중합 스티렌 부타디엔 고무의 유리전이온도는 -45℃ ∼ -55℃, 네오디미움 부타디엔 고무의 유리전이온도는 -100℃ ∼ -110℃인 것을 원료고무로 사용시 가장 좋은 특성의 고무시편을 얻을 수 있었다.In the solution-polymerized styrene butadiene rubber and neodymium butadiene rubber included in the raw material rubber of the present invention, various glass transition temperatures (Tg) were experimentally used, and the glass transition temperature of the solution-polymerized styrene butadiene rubber was -45 ° C to -55. When the glass transition temperature of the neodymium butadiene rubber is -100 ℃ ~ -110 ℃ was used as the raw material rubber, rubber specimens of the best characteristics could be obtained.
한편 네오디미움 부타디엔 고무는 상기의 유리전이온도 이외에 시스(cis) 함량이 98% 이상인 것을 사용시 마모특성이 좋은 트레드 고무시편을 얻을 수 있다.On the other hand, neodymium butadiene rubber can obtain a tread rubber specimen having good wear characteristics when using a cis content of 98% or more in addition to the glass transition temperature.
이하 본 발명을 다음의 비교예, 실시예 및 시험예에 의하여 설명하고자 한다. 그러나 이들이 본 발명의 기술적 범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described by the following comparative examples, examples and test examples. However, these do not limit the technical scope of the present invention.
<비교예>Comparative Example
스티렌 부타디엔 고무(SBR-1712, 금호석유화학) 50 중량부 및 스티렌 부타디엔 고무(SBR-1500, 금호석유화학) 50 중량부가 혼합된 원료고무 100 중량부에 대하여 통상적으로 타이어 고무조성물에 사용하는 첨가제로서 카본블랙 78 중량부, 산화아연 3 중량부, 노화방지제 4 중량부, 스테아린산 2 중량부, 연화제 13 중량부, 가류제 2.0 중량부, 촉진제 1.9 중량부를 혼합한 후 160℃에서 25분 동안 가류하여 고무시편을 제조하였다.As an additive commonly used in tire rubber compositions, based on 100 parts by weight of raw material rubber mixed with 50 parts by weight of styrene butadiene rubber (SBR-1712, Kumho Petrochemical) and 50 parts by weight of styrene butadiene rubber (SBR-1500, Kumho Petrochemical) 78 parts by weight of carbon black, 3 parts by weight of zinc oxide, 4 parts by weight of anti-aging agent, 2 parts by weight of stearic acid, 13 parts by weight of softener, 2.0 parts by weight of vulcanizing agent, 1.9 parts by weight of accelerator, followed by vulcanization at 160 ° C. for 25 minutes Specimen was prepared.
<실시예 1><Example 1>
스티렌 부타디엔 고무(SBR-1712, 금호석유화학) 50 중량부, 비닐함량이 30%이고 유리전이온도(Tg)가 -50℃인 용액중합 스티렌 부타디엔 고무(S-SBR) 40 중량부, 시스(Cis)기가 98%이고 유리전이온도가 -109℃인 네오미디움 부타디엔 고무(Nd-BR) 10 중량부가 혼합된 원료고무 100 중량부에 대하여 통상적으로 타이어 고무조성물에 사용하는 첨가제로서 카본블랙 78 중량부, 산화아연 3 중량부, 노화방지제 4 중량부, 스테아린산 2 중량부, 연화제 13 중량부, 가류제 2.0 중량부, 촉진제 1.9 중량부를 혼합한 후 160℃에서 25분 동안 가류하여 고무시편을 제조하였다.50 parts by weight of styrene butadiene rubber (SBR-1712, Kumho Petrochemical), 40 parts by weight of solution-polymerized styrene butadiene rubber (S-SBR) having a vinyl content of 30% and a glass transition temperature (Tg) of -50 ° C. ) As an additive normally used in tire rubber compositions, based on 100 parts by weight of 10% by weight of neodymium butadiene rubber (Nd-BR) having a 98% group and a glass transition temperature of -109 ° C, 78 parts by weight of carbon black, Rubber parts were prepared by mixing 3 parts by weight of zinc oxide, 4 parts by weight of anti-aging agent, 2 parts by weight of stearic acid, 13 parts by weight of softener, 2.0 parts by weight of vulcanizing agent, and 1.9 parts by weight of accelerator, followed by vulcanization at 160 ° C. for 25 minutes.
<실시예 2><Example 2>
원료고무 100 중량부중 용액중합 스티렌 부타디엔 고무 35 중량부, 네오미디움 부타디엔 고무 15 중량부를 사용하는 것을 제외하고는 상기 실시예 1과 같은 방법을 이용하여 고무시편을 제조하였다.A rubber specimen was prepared in the same manner as in Example 1, except that 35 parts by weight of solution-polymerized styrene butadiene rubber and 15 parts by weight of neodium butadiene rubber were used in 100 parts by weight of the raw rubber.
표 1. 비교예 및 실시예 시편의 고무조성물(단위 : 중량부)Table 1. Rubber Compositions of Comparative Examples and Examples Specimen (unit: parts by weight)
<시험예><Test Example>
상기 비교예 및 실시예의 고무시편에 대하여 공지의 방법으로 인장물성, 니점도 및 마모특성을 측정하여 그 결과를 아래의 표 2에 정리하여 나타내었다.The rubber specimens of Comparative Examples and Examples were measured in a known manner in terms of tensile properties, kinematic viscosity and wear characteristics, and the results are summarized in Table 2 below.
표 2. 비교예 및 실시예 고무시편의 물성측정 결과Table 2. Measurement results of the rubber specimens of Comparative Examples and Examples
상기 표 2에서처럼 비닐함량이 30% 이상인 용액중합 스티렌 부타디엔 고무(S-SBR)와 시스(Cis)기가 98% 이상인 네오미디움 부타디엔 고무(Nd-BR)를 원료고무 중에 포함된 실시예 고무시편과 이들이 포함되어 있지 않은 비교예의 고무시편에 있어서 본 발명의 고무조성물은 종래의 고무조성물과 비교시 동등 수준 이상의 점도와 인장물성을 가지면서 마모특성이 보다 향상됨을 알 수 있다.As shown in Table 2, an example rubber specimen containing a solution-polymerized styrene butadiene rubber (S-SBR) having a vinyl content of 30% or more and a neodium butadiene rubber (Nd-BR) having a cis group of 98% or more in a raw material rubber and these In the rubber sample of the comparative example is not included, it can be seen that the rubber composition of the present invention has a higher viscosity and tensile properties than the conventional rubber composition, while improving the wear characteristics.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100716040B1 (en) | 2006-08-16 | 2007-05-08 | 한국타이어 주식회사 | Rubber composition for truck/bus tire tread |
| KR101132773B1 (en) | 2009-12-21 | 2012-04-06 | 한국타이어 주식회사 | Rubber composition for tire tread and tire manufactured by using the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100476014B1 (en) * | 2002-06-28 | 2005-03-10 | 금호타이어 주식회사 | Tire tread Compound with Low Rolling Resistance |
| KR100760823B1 (en) * | 2006-10-04 | 2007-10-04 | 한국타이어 주식회사 | Rubber composition for tire tread |
| KR100760824B1 (en) * | 2006-10-23 | 2007-10-04 | 한국타이어 주식회사 | Rubber composition for truck/bus tire tread |
| KR100760825B1 (en) * | 2006-10-23 | 2007-10-04 | 한국타이어 주식회사 | Rubber composition for truck/bus tire tread |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515922A (en) * | 1983-01-31 | 1985-05-07 | Bridgestone Tire Company Limited | Rubber compositions |
| JPS6166733A (en) * | 1984-09-07 | 1986-04-05 | Sumitomo Rubber Ind Ltd | Rubber composition for tire tread |
| JPH07292161A (en) * | 1994-04-22 | 1995-11-07 | Asahi Chem Ind Co Ltd | Rubber composition for tire tread |
| KR19990026211A (en) * | 1997-09-23 | 1999-04-15 | 신형인 | Tread Silica Rubber Composition |
| US5905107A (en) * | 1997-02-06 | 1999-05-18 | Continental Aktiengesellschaft | Unvulcanized rubber mixture for tire treads |
-
2001
- 2001-09-07 KR KR10-2001-0054954A patent/KR100426066B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515922A (en) * | 1983-01-31 | 1985-05-07 | Bridgestone Tire Company Limited | Rubber compositions |
| JPS6166733A (en) * | 1984-09-07 | 1986-04-05 | Sumitomo Rubber Ind Ltd | Rubber composition for tire tread |
| JPH07292161A (en) * | 1994-04-22 | 1995-11-07 | Asahi Chem Ind Co Ltd | Rubber composition for tire tread |
| US5905107A (en) * | 1997-02-06 | 1999-05-18 | Continental Aktiengesellschaft | Unvulcanized rubber mixture for tire treads |
| KR19990026211A (en) * | 1997-09-23 | 1999-04-15 | 신형인 | Tread Silica Rubber Composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100716040B1 (en) | 2006-08-16 | 2007-05-08 | 한국타이어 주식회사 | Rubber composition for truck/bus tire tread |
| KR101132773B1 (en) | 2009-12-21 | 2012-04-06 | 한국타이어 주식회사 | Rubber composition for tire tread and tire manufactured by using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030021609A (en) | 2003-03-15 |
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