KR100544526B1 - Tread compound for tire - Google Patents
Tread compound for tire Download PDFInfo
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- KR100544526B1 KR100544526B1 KR1020030024233A KR20030024233A KR100544526B1 KR 100544526 B1 KR100544526 B1 KR 100544526B1 KR 1020030024233 A KR1020030024233 A KR 1020030024233A KR 20030024233 A KR20030024233 A KR 20030024233A KR 100544526 B1 KR100544526 B1 KR 100544526B1
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- 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
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
본 발명은 연비성능, 핸들링성능 및 내마모성능을 향상시킨 타이어용 트레드 고무조성물에 관한 것으로, 더 상세하게는 원료고무에 SBR, 용액중합 SBR 및 Nd-BR을 사용하고, 보강제로서 카본블랙과 실리카를 첨가하므로써, 연비성능, 핸들링성능 및 내마모성능을 향상시킨 타이어용 트레드 고무조성물에 관한 것이다. The present invention relates to a tread rubber composition for tires having improved fuel efficiency, handling performance, and abrasion resistance. More specifically, SBR, solution polymerization SBR, and Nd-BR are used as raw material rubber, and carbon black and silica are used as reinforcing agents. By adding, it is related with the tire tread rubber composition which improved fuel efficiency, handling performance, and abrasion resistance.
용액중합 SBR, Nd-BR, 연비성능, 핸들링성능, 마모성능Solution polymerization SBR, Nd-BR, fuel efficiency, handling performance, abrasion performance
Description
본 발명은 연비성능, 핸들링성능 및 내마모성능을 향상시킨 타이어용 트레드 고무조성물에 관한 것으로, 더 상세하게는 원료고무에 SBR, 용액중합 SBR 및 Nd-BR을 사용하고, 보강제로서 카본블랙과 실리카를 첨가하므로써, 연비성능, 핸들링성능 및 내마모성능을 향상시킨 타이어용 트레드 고무조성물에 관한 것이다. The present invention relates to a tread rubber composition for tires having improved fuel efficiency, handling performance, and abrasion resistance. More specifically, SBR, solution polymerization SBR, and Nd-BR are used as raw material rubber, and carbon black and silica are used as reinforcing agents. By adding, it is related with the tire tread rubber composition which improved fuel efficiency, handling performance, and abrasion resistance.
타이어용 트레드고무는 조정안정성, 승차감, 연비성능, 스노우(SNOW)성능, 내마모성능, 제동성능, 내구력 등 여러가지 성능들을 요구하는데, 이들 성능은 서로 상호 부분적으로 배반하는 관계, 즉, 한쪽이 좋아지면 다른쪽은 나빠지는 트레이드 오프(TRADE-OFF)관계에 있어, 타이어용 트레드고무에 있어서 동시에 이들 성능을 개선시키는 것은 곤란하다. 일반적으로 회전저항을 감소시켜 연비성능을 개선시키면 내마모성능이 저하된다. 예를 들면, 보강제를 카본블랙에서 실리카로 바꾸면 연비성능은 좋아지나, 내마모성능은 하락한다. Tread rubber for tires requires various performances such as adjustment stability, ride comfort, fuel efficiency, snow performance, abrasion resistance, braking performance, and durability, and these performances partially overlap each other, that is, when one side gets better The other side is in a bad trade-off relationship, and it is difficult to improve these performances at the same time in the tread rubber for tires. In general, when the rolling resistance is reduced to improve fuel efficiency, wear resistance is lowered. For example, changing the reinforcing agent from carbon black to silica improves fuel efficiency but decreases wear resistance.
또한, 연비성능을 개선시키는 방법으로 용액중합 스티렌부타디엔고무(SOLUTION SBR)를 원료고무로 사용하는 방법이 많이 연구되고 있다. 그러나, 용액중합 SBR을 원료고무로 사용시, 연비성능은 개선되나, 내마모성 능이 하락하는 단점이 있다.In addition, as a method for improving fuel efficiency, a lot of researches have been made on the use of solution-polymerized styrene-butadiene rubber (SOLUTION SBR) as a raw rubber. However, when the solution-polymerized SBR is used as the raw material rubber, fuel economy performance is improved, but wear resistance is deteriorated.
연비성능을 개선시키기 위해 보강제로서 실리카를 사용하면, 내마모성능이 하락하고, 실리카를 사용함으로써 고무와의 친화성을 향상시키기 위해 사용되는 부수적인 약품들과 특수 폴리머의 사용에 의해 원가상승이 야기된다. 따라서, 타이어 제조업체에서는 이러한 타이어 성능에 있어서의 상호 배반적인 특성을 줄이기 위해 많은 연구와 시험이 진행되고 있다.The use of silica as a reinforcing agent to improve fuel efficiency results in lower wear resistance and cost increases due to the use of additional polymers and specialty polymers used to improve affinity with rubber by using silica. Accordingly, many studies and tests have been conducted by tire manufacturers to reduce such mutually betrayal characteristics in tire performance.
또한, 최근 세계적으로 환경에 대한 관심이 증대됨에 따라 환경친화적 타이어 개발에 대한 요구가 증대되어, 무/저공해 차량생산을 계획중인 자동차 제조업체의 대응전략 수립이 필요하게 되었고, 이에 발맞추어 타이어 제조업체에서도 연비성능을 개선시킨 저연비 타이어 개발이 시급하다.In addition, as the global interest in the environment has increased recently, the demand for environment-friendly tire development has increased, and it is necessary to establish a response strategy of an automobile manufacturer planning to produce a vehicle with low / no pollution. It is urgent to develop low-fuel tires with improved performance.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 원료고무에 SBR, 용액중합 SBR 및 Nd-BR을 사용하고, 보강제로서 카본블랙과 실리카를 첨가하므로써, 연비성능, 핸들링성능 및 내마모성능을 향상시킨 타이어용 트레드 고무조성물을 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention by using SBR, solution polymerization SBR and Nd-BR in the raw material rubber, by adding carbon black and silica as a reinforcing agent, fuel efficiency performance, handling performance and It is to provide a tread rubber composition for tires with improved wear resistance.
본 발명의 타이어용 트레드 고무조성물은 원료고무 100phr중 스티렌부타디엔고무(SBR) 50∼70phr, 용액중합 스티렌부타디엔고무(SOLUTION SBR) 10∼30phr과 네오디뮴을 촉매로 하여 제조된 부타디엔 고무(Nd-BR) 20∼40phr을 포함하고, 보강제로서 카본블랙 35∼55phr 및 실리카 20∼40phr을 더 포함하는 것을 특징으로 한다.The tread rubber composition for tires of the present invention is a styrene butadiene rubber (SBR) of 50 to 70 phr, a solution-polymerized styrene butadiene rubber (SOLUTION SBR) of 10 to 30 phr and a neodymium butadiene rubber (Nd-BR) prepared as a catalyst 20 to 40 phr, and further comprising 35 to 55 phr of carbon black and 20 to 40 phr of silica as a reinforcing agent.
본 발명에서 사용되는 SBR은 원료고무 100phr중 50∼70phr 포함되는데, SBR을 50phr 미만으로 사용시 웨트(Wet)성능이 하락되고, 70phr을 초과하여 사용시 웨트성능은 우수해지나, 내마모성능 및 연비성능이 하락되어 바람직하지 않다.The SBR used in the present invention includes 50 to 70 phr of 100 phr of raw rubber. When the SBR is used at less than 50 phr, the wet performance decreases. When the SBR is used in excess of 70 phr, the wet performance is excellent, but the wear resistance and fuel efficiency are improved. It is not desirable to fall.
본 발명에서 사용되는 용액중합 SBR은 원료고무 100phr중 10∼30phr 포함되는데, 용액중합 SBR을 10phr 미만으로 사용시 연비성능의 개선효과가 미비하고, 30phr을 초과하여 사용시 물성 및 웨트 핸들링성능이 하락하여 바람직하지 않다.The solution polymerization SBR used in the present invention includes 10 to 30 phr of 100 phr of raw rubber, and when the solution polymerization SBR is used at less than 10 phr, the improvement of fuel efficiency is inadequate, and when used in excess of 30 phr, physical properties and wet handling performance decrease. Not.
본 발명에서 사용되는 Nd-BR은 원료고무 100phr중 20∼40phr 포함되는데, Nd-BR을 20phr 미만 사용시 내마모성능의 개선효과가 미비하고, 40phr을 초과하여 사용시 웨트성능이 하락하여 바람직하지 않다.Nd-BR used in the present invention contains 20 to 40 phr of 100 phr of raw rubber, the use of Nd-BR less than 20 phr is not preferable to improve the wear resistance, when using more than 40 phr wet performance is not preferred.
본 발명에서 보강제로서 사용되는 카본블랙 및 실리카의 종류에는 특별한 제한이 없으며, 통상적으로 시판되는 제품을 구입하여 사용할 수 있다. There is no particular limitation on the type of carbon black and silica used as the reinforcing agent in the present invention, and commercially available products can be purchased and used.
카본블랙은 원료고무 100phr에 대하여 35∼55phr 사용하는데, 카본블랙을 35phr 미만 사용시 정전기가 발생할 수 있어 소비자의 불만을 불러 일으킬 수 있고, 55phr을 초과하여 사용시 발열의 증가로 인해 연비성능이 하락되므로 바람직하지 않다.Carbon black is used at 35 to 55 phr for 100 phr of raw rubber, which can cause static electricity when less than 35 phr of carbon black is used. Not.
실리카는 원료고무 100phr에 대하여 20∼40phr 사용하는데, 실리카를 20phr 미만 사용시 연비성능의 개선효과가 미흡하고, 40phr을 초과하여 사용시 카본량의 감소에 따른 정전기 발생의 소지가 있어 소비자의 불만을 불러 일으킬 수 있으므로 바람직하지 않다.Silica uses 20 ~ 40phr for 100phr of raw rubber. When using less than 20phr of silica, the improvement of fuel efficiency is inadequate, and if it exceeds 40phr, there is a possibility of generating static electricity due to the reduction of carbon amount, which may cause consumer complaints. It is not desirable because it can.
본 발명의 고무 조성물에는 필요에 따라 활성제, 아연화, 가황제, 가소제, 공정유, 연화제 및 노방제 등의 통상적인 첨가제들을 첨가할 수 있으며, 이들 첨가제의 종류 및 적정사용량은 당 분야에서 공지이다.To the rubber composition of the present invention, conventional additives such as activators, galvanizing agents, vulcanizing agents, plasticizers, process oils, softeners and preservatives may be added, if necessary, and the types and proper amounts of these additives are known in the art.
이하, 본 발명을 하기의 실시예를 통하여 더욱 자세히 설명한다. 하기의 실시예는 본 발명을 예시하기 위한 예에 지나지 않으며, 본 발명의 보호범위를 제한하는 것은 아니다. Hereinafter, the present invention will be described in more detail with reference to the following examples. The following examples are merely examples for illustrating the present invention, and do not limit the protection scope of the present invention.
실시예 및 비교예Examples and Comparative Examples
하기 표 1에 나타낸 조성비대로 각 성분을 혼련하여 제조된 고무조성물로 시편을 제조한 후, 그 물성을 측정하였다.The specimens were prepared from rubber compositions prepared by kneading the components according to the composition ratios shown in Table 1 below, and then the physical properties thereof were measured.
물성 측정결과는 하기 표 1과 같다.Physical property measurement results are shown in Table 1 below.
* 단위: phr* Unit: phr
* SBR-1721: High-STYRENE SBR 40.5%, OIL EXTENDED 37.5%, 금호석유화학제* SBR-1721: High-STYRENE SBR 40.5%, OIL EXTENDED 37.5%, Kumho Petrochemical
* ST-6340: SOLUTION SBR, STYRENE 30%, VINYL 39%, OIL EXTENDED 37.5%, Tg -43℃, 금호석유화학제* ST-6340: SOLUTION SBR, STYRENE 30%, VINYL 39%, OIL EXTENDED 37.5%, Tg -43 ℃, Kumho Petrochemical
* Nd-BR: Cis함량 98%, Nitrile 10%, Tg -105℃, Bayer사제* Nd-BR: Cis content 98%, Nitrile 10%, Tg -105 ° C, manufactured by Bayer
* oil: Aromatic oil, 미창석유제* oil: Aromatic oil, unchanged oil
* CZ: N-cyclohexyl-2-benzothiazole sulfenamide, 동양화학제* CZ: N-cyclohexyl-2-benzothiazole sulfenamide, Dongyang Chemical
* DPG: Diphenylguanidine, 금호몬산토제* DPG: Diphenylguanidine, Kumhomonate
원료고무로서 SBR과 용액중합 SBR만을 사용하고, 보강제로서 카본블랙만을 75phr 첨가한 비교예 1에 비해, 원료고무로서 SBR, 용액중합 SBR과 함께 Nd-BR을 10phr 사용하고, 보강제로서 카본블랙 45phr과 함께 실리카를 30phr 첨가한 비교예 2는 연비성능(대응지수: Tan δ 0℃)과 핸들링성능(HD'S)은 크게 향상했으나, 내마모성능이 크게 하락했음을 알 수 있다.Compared to Comparative Example 1 in which only SBR and solution polymerization SBR were used as raw material rubber and only 75 phr of carbon black was added as a reinforcing agent, 10 phr of Nd-BR was used together with SBR and solution polymerization SBR as raw material rubber, and 45 phr of carbon black was used as reinforcing agent. In Comparative Example 2, in which 30 phr of silica was added together, fuel efficiency (corresponding index: Tan δ 0 ° C.) and handling performance (HD'S) were greatly improved, but it was found that the wear resistance was greatly decreased.
그러나, 원료고무로서 SBR, 용액중합 SBR과 함께 Nd-BR을 20∼40phr 사용하고, 보강제로서 카본블랙 45phr과 함께 실리카를 30phr 첨가한 실시예 1, 2 및 3은 모두 핸들링성능, 연비성능이 크게 향상하고, 내마모성능도 향상했음을 알 수 있다.However, Examples 1, 2, and 3, in which 20 to 40 phr of Nd-BR was used together with SBR and solution polymerization SBR as raw material rubbers, and 30 phr of silica was added together with 45 phr of carbon black as a reinforcing agent, were all excellent in handling and fuel efficiency. It can be seen that the wear resistance is also improved.
반면, 원료고무로서 용액중합 SBR을 사용하지 않고, 통상의 SBR과 함께 Nd-BR을 50phr 첨가하고, 보강제로서 카본블랙과 함께 실리카를 30phr 첨가한 비교예 3의 경우, 연비성능과 내마모성능은 향상하나, 핸들링성능이 저하함을 알 수 있다.On the other hand, in the case of Comparative Example 3 in which 50 phr of Nd-BR was added together with conventional SBR without using solution-polymerized SBR as a raw material rubber, and 30 phr of silica was added together with carbon black as a reinforcing agent, fuel efficiency and wear resistance were improved. However, it can be seen that the handling performance is reduced.
본 발명의 타이어용 트레드 고무조성물은 원료고무에 SBR, 용액중합 SBR 및 Nd-BR을 사용하고, 보강제로서 카본블랙과 실리카를 첨가하므로써, 연비성능, 핸들링성능 및 내마모성능을 향상시키는 효과를 갖는다.The tread rubber composition for tires of the present invention uses SBR, solution polymerization SBR, and Nd-BR as raw material rubbers, and by adding carbon black and silica as reinforcing agents, it has an effect of improving fuel efficiency, handling performance, and wear resistance.
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| KR (1) | KR100544526B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715718B1 (en) | 2005-06-22 | 2007-05-08 | 금호타이어 주식회사 | Pcr tread compound for pneumatic tire |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100656260B1 (en) * | 2005-06-07 | 2006-12-11 | 금호타이어 주식회사 | Rubber composition for tire tread having improved abrasion resistance |
| KR100760823B1 (en) * | 2006-10-04 | 2007-10-04 | 한국타이어 주식회사 | Rubber composition for tire tread |
| KR100897435B1 (en) | 2007-10-04 | 2009-05-14 | 한국타이어 주식회사 | Rubber composition for tire tread |
| KR100903990B1 (en) | 2007-12-04 | 2009-06-22 | 한국타이어 주식회사 | Sustainable Rubber composition for tire tread |
| CN111171410A (en) * | 2018-11-12 | 2020-05-19 | 台州太阳风橡胶有限公司 | Modified white carbon black reinforced rubber tire material and preparation method thereof |
-
2003
- 2003-04-17 KR KR1020030024233A patent/KR100544526B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715718B1 (en) | 2005-06-22 | 2007-05-08 | 금호타이어 주식회사 | Pcr tread compound for pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040090239A (en) | 2004-10-22 |
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