KR100356585B1 - Tread rubber composition for four seasons, improving traction performance and fuel consumption simultaneously - Google Patents

Tread rubber composition for four seasons, improving traction performance and fuel consumption simultaneously Download PDF

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KR100356585B1
KR100356585B1 KR1019950003415A KR19950003415A KR100356585B1 KR 100356585 B1 KR100356585 B1 KR 100356585B1 KR 1019950003415 A KR1019950003415 A KR 1019950003415A KR 19950003415 A KR19950003415 A KR 19950003415A KR 100356585 B1 KR100356585 B1 KR 100356585B1
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rubber
rubber composition
tread rubber
seasons
weight
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KR1019950003415A
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KR960031528A (en
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오세철
윤찬호
김명선
박종철
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금호산업 주식회사
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • 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
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: Provided is a tread rubber composition for four seasons, which improves traction performance and fuel consumption simultaneously by adding vulcanized rubber powder to a conventional tread rubber composition. CONSTITUTION: The tread rubber composition for four seasons contains 10-20pts.wt.(based on 100pts.wt. of the raw rubber of the tread rubber composition) of the vulcanized rubber powder produced by mixing 100pts.wt. of a rubber comprising polynorbornene as a high glass transition temperature rubber and an oil-extended high styrene rubber in the ratio of 1.00/0.0-0.2/0.8, 50-100pts.wt. of a carbon black, 45-250pts.wt. of a process oil, rubber chemicals, and etc. and vulcanizing and grinding.

Description

트랙션 성능 및 연비를 동시에 향상시키는 사계절용 트래드 고무조성물Four seasons tread rubber composition improves traction performance and fuel economy

본 발명은 트레드용 고무조성물로서 천연고무, 합성고무 등을 사용하는 사계절용 트레드 고무를 배합할 때 고유리전이 온도 고무(High Tg 고무)인 폴리노보넨(polynorborne) 고무와 오일익스텐디드 하이 스티렌 고무(oil extended high styrene rubber), 카본블랙, 고무약품, 오일 등을 배합하여 가황한 후 분쇄하여 이 분쇄물을 첨가함으로써, 그 조성물로 제조된 타이어의 회전저항이 감소되어 연료소비를 감소시키면서도 젖은 노면 등에서의 그립(GRIP)력이 향상되어 트랙션(traction) 성능이 크게 향상된 고무조성물에 관한 것이다.The present invention is a polynorbornene (polynorborne) rubber and oil extended high styrene rubber, which is a high-temperature transition high-temperature rubber (High Tg rubber) when compounding four season tread rubber using natural rubber, synthetic rubber, etc. as a tread rubber composition. (oil extended high styrene rubber), carbon black, rubber chemicals, oils, etc. are vulcanized and pulverized and added to this pulverized product, reducing the rolling resistance of the tire made of the composition, while reducing fuel consumption It relates to a rubber composition with improved grip on the back and greatly improved traction performance.

고무의 탄성거동은 주로 탄델타(Tan δ) 값으로 예측하게 되는데, 0'C의 값은 주로 트랙션 성능의 예측에 사용되고, 70'C의 값은 회전저항을 예측하는 지표로 삼는다. 그러나 두 값은 어느 한쪽을 향상시키면 또 다른 한쪽은 악화되는 역관계를 가지고 있어서 두 값을 모두 좋은 쪽으로 폴리머를 디자인한다는 것은 상당히 어려운 일이다. 따라서 에너지 절약형 타이어를 만들기 위해서는 각 부위별 에너지 손실을 고려하여 구조설계를 해야 하며, 또 각 부위에 쓰이는 고무도 그 구조에 부합되도록 디자인하여야 하는데 래디알 타이어의 경우 트레드 부위에서 손실되는 에너지가 전체의 절반 이상이기 때문에 트래드 고무조성 디자인은 상당히 중요하게 고려해야 할 일이다. 에너지 위기 이후 에너지 절약형 타이어의 연구 필요성이 대두되었고, 미국에서는 에너지 절약형 차량의 판매를 강화하는 법안도 도입되었다. 이러한 추세에 따라 타이어 메이커에서 맨 먼저 고려한 것이 타이어의 중량을 감소함으로써 에너지 소비를 줄이고자 하였고, 그 결과 상당한 효과도 거두었으나 더 이상이 중량감소는 한계에 부딪히게 되었다. 따라서, 트래드 고무조성의 디자인을 통해 회전저항을 줄이고자 스티렌 함량이 많은 SBR 사용, 카본블랙의 입자경 조절, 레진 등으로 회전저항을 감소시켜 연비향상을 꾀해 많은 효과를 얻은 것도 사실이다. 그러나 이러한 효과는 트랙션 성능의 하락을 초래해 또 다른 문제점을 야기시키는 결과를 가져왔고, 화학자들에게 던져진 당면 과제로 남게 되었다. 그래서 연비와 트랙션 성능이 동시에 향상되는 최적의 트레드 고무조성을 디자인하는 방향으로 연구의 초점이 모아지고 있다.The elastic behavior of rubber is mainly predicted by the tan delta value. The value of 0'C is mainly used for the prediction of traction performance, and the value of 70'C is used as an index for predicting the rolling resistance. However, the two values have an inverse relationship that improves on one side and the other on the other side, so designing the polymer for the better of both values is quite difficult. Therefore, in order to make energy-saving tires, the structural design should be designed in consideration of the energy loss of each part, and the rubber used for each part should be designed to match the structure. Since it is more than half, the design of the tread rubber composition is an important consideration. The need for research on energy-saving tires has emerged since the energy crisis, and legislation has been introduced in the United States to strengthen the sale of energy-saving vehicles. According to this trend, the tire maker's first consideration was to reduce energy consumption by reducing the weight of the tire. As a result, the weight reduction was hitting the limit. Therefore, it is also true that the design of the tread rubber composition reduced the rolling resistance by using SBR having a high styrene content, controlling the particle diameter of carbon black, and resin to reduce the rolling resistance, thereby improving fuel economy. This effect, however, led to a drop in traction performance, leading to another problem, which remained a challenge for chemists. Therefore, research is focused on designing the optimal tread rubber composition which simultaneously improves fuel economy and traction performance.

본 발명은 천연고무 합성고무 등을 적용한 사계절용 트레드고무 배합 시 가류된 고무 분쇄물을 넣어 배합하여 트레드를 만들면 이 타이어의 회전저항이 감소되어 연비가 향상되고 이와 반대로 하락되는 트랙션 성능도 함께 향상시키는 고무 조성물에 관한 것이다. 이렇게 디자인된 트레드 고무의 탄성거동은, 일반적인 개념의 탄성거동과 달라서 타이어 드레드 내부에 분산된 가류분쇄물이 상온에서는 동질적으로 작용하므로 내마모 성능의 하락이 없으며 회전 저항이 감소되어 연비가 향상되고, 가류 분쇄물의 트랙션 성능이 트레드 모체 고무에 전이되어 마른 노면이나젖은 노면에서도 트랙션 성능이 향상된다. 또한, 동절기가 되면 타이어의 트레드 고무에 분산되어 있는 분쇄물이 경화되어 이질적으로 작용하여 스파이크 역할을 하고 따라서 미끄럼방지 성능까지도 향상된다.According to the present invention, when the tread is made by adding a crushed rubber crushed product when blending the tread rubber for four seasons using natural rubber or synthetic rubber, the rolling resistance of the tire is reduced, fuel economy is improved, and vice versa. It relates to a rubber composition. The elastic behavior of the tread rubber designed in this way is different from the general elastic behavior, so that the vulcanizate dispersed inside the tire thread acts homogeneously at room temperature, so there is no deterioration in abrasion resistance and reduced rolling resistance, resulting in improved fuel economy. In addition, the traction performance of the vulcanized crushed powder is transferred to the tread mother rubber to improve the traction performance on dry or wet roads. In addition, in winter, the pulverized material dispersed in the tread rubber of the tire is cured and acts heterogeneously to act as a spike, thereby improving the anti-slip performance.

본 발명에 사용된 가류 분쇄물은 카본블랙 및 공정유등으로 가공처리된 플라스틱계 고무를 사용하여 높은 인장강도를 유지하면서도 낮은 경도를 나타내는 고유리전이 온도의 화합물이 되도록 배합한 후 가황을 시켜 분쇄물로 만들었으며, 이 분쇄물을 천연고무 및 폴리스티렌부타디엔고무(SBR), 폴리부타디엔고무(BR) 등의 합성고무를 적용하는 사계절용 트레드고무 화합물의 한 성분으로 첨가하여 배합하였다.The vulcanized pulverized product used in the present invention is mixed with carbon black and a process rubber such as a process oil to maintain a high tensile strength while maintaining a high tensile strength while blending to vulcanize the pulverized product by vulcanization. The pulverized product was added and blended as a component of the four season tread rubber compound to which synthetic rubber such as natural rubber, polystyrene butadiene rubber (SBR), and polybutadiene rubber (BR) was applied.

본 발명을 실시예를 들어 더욱 상세히 설명하면 천연고무 및 폴리스티렌부타디엔고무, 폴리부타디엔고무에 카본블랙, 공정유 및 화학약품 등을 적용한 통상의 트레드 고무조성물에, 고유리전이 온도 플라스틱계 고무 폴리노보넨과 오일익스텐디드 하이 스티렌고무(EO-1Z)의 비율이 1.0/0.0-0.2/0.8 범위인 고무 100중량부에 대해 공정유를 45-250중량부 및 카본블랙 50-100중량부와 고무약품 등을 혼합하여 가황시킨 후 분쇄물로 만든 후, 이를 트레드 고무조성물의 원료 고무 성분 100중량부에 대하여 10∼20중량부 첨가하여 배합한 트레드고무를 제조하였다. 상기 폴리노보넨과 오일익스텐디드 하이 스티렌고무(EO-1Z)의 비율이 상기 범위를 벗어난 경우, 오일익스텐디드 스티렌고무의 함량이 지나지치게 많아 비점 상승이나 증량효과보다 물성이 나빠지므로 부적절하다. 또한, 카본블랙의 함량이 50중량부 미만인 경우, 충분한 보강성이 확보되지 않으며, 100중량부를 초과하는 경우 분산성이 나빠지고 함량의 증가에 비하여 보강성 증가가 미미하여 비경제적이다. 또한, 공정유의 함량이 45중량부 미만인 경우 연화효과가 미미하고, 250중량부를 초과하는 경우 분산성이 나빠지고 블루밍이 발생하여 적절하지 않다. 그리고, 상기 분쇄물의 함량이 10중량부 미만이거나 20중량부를 초과하는 경우, 트랙션 성능 및 연비 중 어느 하나만 개선되고 다른 하나는 오히려 불량하게 되어 바람직하지 않다.The present invention will be described in more detail with reference to Examples. In the conventional tread rubber composition to which carbon black, process oil, chemicals and the like are applied to natural rubber, polystyrene butadiene rubber, polybutadiene rubber, high-temperature transition plastic-based rubber polynorbornene 45 to 250 parts by weight of process oil, 50-100 parts by weight of carbon black, rubber chemicals, etc., to 100 parts by weight of rubber having a ratio of EO-1Z to 1.0 / 0.0-0.2 / 0.8. After the mixture was vulcanized and made into a pulverized product, 10 to 20 parts by weight was added to 100 parts by weight of the raw rubber component of the tread rubber composition to prepare a blended tread rubber. When the ratio of the polynorbornene and the oil extended high styrene rubber (EO-1Z) is out of the above range, the content of the oil extended styrene rubber is excessively excessive, so the physical properties worsen than the boiling point increase or the increase effect, which is inappropriate. In addition, when the content of the carbon black is less than 50 parts by weight, sufficient reinforcement is not secured. When the content of the carbon black is more than 100 parts by weight, the dispersibility is poor and the increase in reinforcement is insignificant compared to the increase in content. In addition, when the content of the process oil is less than 45 parts by weight, the softening effect is insignificant, and when it exceeds 250 parts by weight, dispersibility is poor and blooming occurs, which is not appropriate. And, when the content of the pulverized product is less than 10 parts by weight or more than 20 parts by weight, only one of the traction performance and fuel economy is improved and the other becomes rather poor, which is not preferable.

상기와 같이 제조된 트레드 고무를 195/65R15 규격의 시험타이어로 제조하여 타이어의 내마모성, 건, 습노면에서의 제동성능, 회전저항, 연료소비량, 빙설노면에서의 제동성능, 구동성능 등을 평가하였다. 건 습노면에서의 제동성능시험은 4개의 시험타이어를 배기량 2000cc 시험차량에 장착하고 외기온도 25℃, 노면의 표면온도 30℃의 시험조건에서 제동거리(30km/h)를 측정하였다. 내마모성능 및 연비는 4개의 시험타이어를 배기량 2000cc 시험차량에 장착하고 일반도로에서 30,000km 주행시키면서 그루브의 깊이 변화량 및 연료소비량을 측정하였다. 회전저항은 회전저항 측정기를 이용하여 측정하였으며 빙설노면에서의 제동력 및 구동력 평가는 동규격의 차량과 스노우 타이어를 이용하여 외기온도 -5℃, 노면의 표면온도 -8℃의 시험조건에서 제동거리(30km/h) 및 구동력을 평가하였다. 이때 성능시험결과는 사계절용 타이어 트레드를 가진 타이어 성능을 100으로 할 때 그 지수가 클수록 제반성능이 더 우수함을 나타내나 회전저항 값은 실측치이므로 작은 값이 우수함을 나타낸다.The tread rubbers prepared as described above were manufactured with test tires of 195 / 65R15 standard to evaluate tire abrasion resistance, braking performance on dry and wet surfaces, rolling resistance, fuel consumption, braking performance on ice and snow surface, and driving performance. . The braking performance test on wet and dry roads was carried out with four test tires mounted on a test vehicle with a displacement of 2000cc, and the braking distance (30km / h) was measured under test conditions of 25 ℃ outside temperature and 30 ℃ surface temperature. Abrasion resistance and fuel efficiency were measured by depth of groove and fuel consumption while four test tires were mounted on a 2000cc test vehicle with a displacement of 30,000 km on a general road. Rotational resistance was measured using a rolling resistance measuring instrument. Brake force and driving force evaluation on ice and snow roads were measured using braking distance (test temperature of -5 ℃ and surface temperature of -8 ℃) 30 km / h) and driving force were evaluated. The performance test results show that when the tire performance with four season tire treads is set to 100, the larger the index, the better the overall performance, but the smaller the better because the rolling resistance value is the measured value.

실시예 1Example 1

표 1. 완제품 시험결과표Table 1. Test result table of finished product

표 2. 동계성능 시험결과표Table 2. Winter Performance Test Results Table

실시예 2Example 2

표 3. 완제품 시험결과표Table 3. Finished Product Test Results Table

표 4. 동계성능 시험결과표Table 4. Winter Performance Test Results Table

실시예 3Example 3

표 5. 완제품 시험결과표Table 5. Test Result Table of Finished Products

표 6. 동계성능 시험결과표Table 6. Winter Performance Test Results Table

Claims (1)

사계절용 타이어 트레드 고무 조성물에 있어서, 폴리노보넨(Polynorbornene)과 오일-익스텐디드 하이 스티렌(Oil-Extended High Styrene) 고무가 1.00/0.0∼0.2/0.8인 비로 된 고무 100중량부에 카본블랙 50-100중량부 및 프로세스 오일 45-250중량부를 포함하는 배합물을 가류하여 분쇄한 분말을 트레드 고무 조성물의 한 성분으로 고무 성분 100중량부에 대하여 10∼20중량부 포함하는 것을 특징으로 하는 트랙션 성능 및 연비를 동시에 향상시킨 사계절용 트레드 고무 조성물.In the tire tread rubber composition for four seasons, carbon black 50 to 100 parts by weight of polynorbornene and oil-extended high styrene rubber having a ratio of 1.00 / 0.0 to 0.2 / 0.8 Traction performance characterized in that it comprises 10 to 20 parts by weight of a powder comprising a mixture of -100 parts by weight and 45-250 parts by weight of process oil as a component of the tread rubber composition based on 100 parts by weight of the rubber component and The four season tread rubber composition which improved fuel economy simultaneously.
KR1019950003415A 1995-02-22 1995-02-22 Tread rubber composition for four seasons, improving traction performance and fuel consumption simultaneously KR100356585B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100806419B1 (en) 2006-09-29 2008-02-21 금호타이어 주식회사 Tire tread rubber composition

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426062B1 (en) * 2001-04-06 2004-04-06 금호타이어 주식회사 Tread rubber composition for snow tire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100806419B1 (en) 2006-09-29 2008-02-21 금호타이어 주식회사 Tire tread rubber composition

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