KR20000073840A - Tread rubber composition for snow tire - Google Patents

Tread rubber composition for snow tire Download PDF

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KR20000073840A
KR20000073840A KR1019990017395A KR19990017395A KR20000073840A KR 20000073840 A KR20000073840 A KR 20000073840A KR 1019990017395 A KR1019990017395 A KR 1019990017395A KR 19990017395 A KR19990017395 A KR 19990017395A KR 20000073840 A KR20000073840 A KR 20000073840A
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rubber
carbon black
silica
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KR100308880B1 (en
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김명선
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신형인
금호산업 주식회사
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
    • G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
    • G09B1/04—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols
    • G09B1/06—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support
    • G09B1/08—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support by means of magnets
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
    • G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective

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Abstract

PURPOSE: A tire tread composition having improved driving and gripping properties and reduced rolling resistance on snowed road surface by replacing a part of carbon black used as a reinforcing filler with silica is provided which remarkably improves fuel consumption efficiency. CONSTITUTION: The tire tread composition comprises 100 parts by weight of raw material rubber comprising natural rubber and synthetic rubber in a ratio of 4 : 6, 40 to 70 parts by weight of carbon black, 10 to 40 parts by weight of silica, 1.6 to 6.4 parts by weight of a coupling agent, 0.5 to 2 parts by weight of ethylene glycol having a molecular weight of 4,000 as a vulcanization retarder, 28 to 30 parts by weight of oil, 2 parts by weight of stearic acid, 3 parts by weight of zinc oxide, 4 parts by weight of an antiaging agent, 2.0 to 2.1 parts by weight of sulfur and 1.4 to 1.9 parts by weight of a vulcanization accelerator. The synthetic rubber comprises polystyrene-butadiene rubber and polybutadiene rubber in a ratio of 2 : 1.

Description

스노우 타이어용 트레드 고무조성물{Tread Rubber Composition for Snow Tire}Tread Rubber Composition for Snow Tires

본 발명은 스노우 타이어용 트레드 고무조성물에 관한 것으로 보다 상세하게는 보강충전제로 사용하는 카본블랙의 일부를 실리카로 대체하여 동절기 빙설노면에서 구동력 및 제동력이 우수하고 회전저항이 감소되어 연비 효율을 향상시킨 스노우 타이어용 고무조성물에 관한 것이다.The present invention relates to a tread rubber composition for snow tires, and more particularly, to replace a part of carbon black used as a reinforcing filler with silica to improve driving efficiency and braking force on a winter snow road and to improve fuel efficiency by reducing rolling resistance. A rubber composition for snow tires.

종래의 동계용 스노우 타이어는 스파이크 타이어와 스터드레스 타이어로 대별할 수 있으며, 이중 스파이크 타이어는 빙설지역에서의 마찰력 증대를 목적으로 스틸 스파이크 핀이나 고무 스파이크 핀을 트레드에 장착하여 타이어와 빙설노면과의 마찰력을 증대시켜 빙설노면에 대한 제동성능 및 구동성능이 우수하다. 그러나 스틸 스파이크 핀을 장착한 타어어가 빙설노면이 아닌 일반노면을 주행할 경우에는 승차감이 불량할 뿐만 아니라 도로손상, 소음, 분진 등의 환경오염을 유발하므로 대부분의 국가에서 이의 사용을 금지하는 추세이고, 고무 스파이크 핀을 장착한 타이어의 경우 스틸 스파이크 핀에 비해 도로손상, 소음, 분진 등의 환경오염 유발이 적으나 트레드 고무에 비해 핀의 마모가 빠르고 사용도중 쉽게 끊어진다. 또한 이들 타이어의 경우 지면과의 높은 마찰력 때문에 회전저항이 높아 연비효율이 낮다는 단점이 있다.Conventional winter snow tires can be roughly classified into spike tires and studless tires, and double spike tires are provided with steel spike pins or rubber spike pins on the tread for the purpose of increasing friction in ice and snow areas. By increasing the frictional force, the braking performance and driving performance on the snow surface are excellent. However, when tires equipped with steel spike pins drive on general roads other than ice and snow roads, not only the ride quality is poor, but also environmental damage such as road damage, noise, dust, etc., prohibits its use in most countries. In the case of tires equipped with rubber spike pins, environmental damage such as road damage, noise, and dust is less induced than steel spike pins, but the wear of the pins is faster than the tread rubber and easily broken during use. In addition, these tires have a disadvantage of low fuel efficiency due to high rolling resistance due to high friction with the ground.

본 발명은 종래의 스노우 타이어용 트레드 부위에 사용하는 고무조성물에 있어서 보강충전제로 사용하는 카본블랙의 일부를 실리카로 대체하여 겨울철 빙설노면에서의 제동력을 유지하고 회전저항을 감소시켜 연료소모를 줄임으로써 연비효율을 대폭 향상시킨 동절기 타이어용 트레드 고무를 제공하는 것을 목적으로 한다.The present invention is to replace the portion of the carbon black used as a reinforcing filler in the rubber composition used in the tread portion for the snow tire of the prior art by maintaining the braking force on the winter snow road surface and reducing the rolling resistance to reduce fuel consumption An object of the present invention is to provide a tread rubber for winter tires with a significant improvement in fuel efficiency.

본 발명의 스노우 타이어용 트레드 부위에 사용되는 고무조성물은 다음과 같다. 천연고무와 합성고무가 4:6 비율로 혼합한 원료고무 100 중량부, 카본블랙 40∼70 중량부, 실리카 10∼40 중량부, 커플링제 1.6∼6.4 중량부, 가류지연 방지제 0.5∼2 중량부, 오일 28∼30 중량부, 스테아린산 2 중량부, 산화아연 3 중량부, 노화방지제 4 중량부, 유황 2.0∼2.1 중량부, 가황촉진제 1.4∼1.9 중량부를 밴부리 믹서(banbury mixer)를 이용하여 혼합함으로써 동절기 타이어용 트레드 고무를 제조할 수 있다. 한편 상기 합성고무는 폴리스타이렌-부타디엔 고무와 폴리부타디엔 고무를 2:1 비율로 구성한다. 상기에서 언급한 카본블랙은 요오드 값이 82∼ 119mg/cc, DBP 흡유량은 102∼125 cm3/100g 인 것을 사용하고 실리카(SiO2-nH2O, n≤0.008)의 경우 CTAB 값이 150∼180m2/g, BET 표면적이 150∼200m2/g인 실리카 Zeosil 175(kofran, 대한민국)를 사용한다. 커플링제는 실리카의 사용량에 비례하여 사용하며 설파이드실란(sI-69)과 카본블랙(N330)이 50:50으로 혼합된 X50S (Degusa, 독일)을 사용한다. 가류시간이 길어지는 것을 방지하기 위해 사용하는 가류지연 방지제는 분자량이 4,000인 폴리에틸렌글리콜 PEG 4,000(konix, 한국폴리올)을 실리카와 함께 투입하여 사용한다.The rubber composition used in the tread portion for snow tires of the present invention is as follows. 100 parts by weight of raw rubber mixed with natural and synthetic rubber in a 4: 6 ratio, 40 to 70 parts by weight of carbon black, 10 to 40 parts by weight of silica, 1.6 to 6.4 parts by weight of coupling agent, 0.5 to 2 parts by weight of vulcanization delaying agent 28-30 parts by weight of oil, 2 parts by weight of stearic acid, 3 parts by weight of zinc oxide, 4 parts by weight of anti-aging agent, 2.0-2.1 parts by weight of sulfur, 1.4-1.9 parts by weight of vulcanization accelerator using a Banbury mixer Thus, tread rubber for winter tires can be produced. On the other hand, the synthetic rubber is composed of polystyrene-butadiene rubber and polybutadiene rubber in a 2: 1 ratio. In the case of a carbon black, the iodine value is 82~ 119mg / cc, DBP oil absorption mentioned above is used in that 102~125 cm 3 / 100g, and silica (SiO 2-n H 2 O , n≤0.008) a CTAB value of 150 Silica Zeosil 175 (kofran, South Korea) having a ˜180 m 2 / g and a BET surface area of 150 to 200 m 2 / g is used. The coupling agent is used in proportion to the amount of silica used, and X50S (Degusa, Germany) in which sulfidesilane (sI-69) and carbon black (N330) are mixed at 50:50 is used. The vulcanization delay inhibitor used to prevent the cure time from being prolonged is used by adding polyethylene glycol PEG 4,000 (konix, Korea Polyol) having a molecular weight of 4,000 together with silica.

이하 본 발명을 다음의 실시예에 의하여 설명하고자 한다. 그러나 이들이 본 발명의 기술적 범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described by the following examples. However, these do not limit the technical scope of the present invention.

< 비교예 ><Comparative Example>

아래의 표 1에 나타낸 비교예의 조성물로 밴부리 믹서를 이용하여 스노우 타이어용 트레드 고무를 제조하였다.The tread rubber for snow tires was manufactured using the Banburi mixer with the composition of the comparative example shown in Table 1 below.

< 실시예 1-4 ><Example 1-4>

아래의 표 1에 나타낸 실시예 1-4의 조성물로 밴부리 믹서를 이용하여 스노우 타이어용 트레드 고무를 제조하였다.Tread rubber for snow tires was prepared using a Banburi mixer with the compositions of Examples 1-4 shown in Table 1 below.

표 1. 비교예 및 실시예의 고무조성물Table 1. Rubber Compositions of Comparative Examples and Examples

구 분division 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 천연고무Natural rubber 4040 4040 4040 4040 4040 폴리스타이렌-부타디엔 고무Polystyrene-Butadiene Rubber 4040 4040 4040 4040 4040 폴리부타디엔 고무Polybutadiene rubber 2020 2020 2020 2020 2020 카본블랙Carbon black 8080 7070 6060 5050 4040 실리카Silica -- 1010 2020 3030 4040 커플링제Coupling agent -- 1.61.6 3.23.2 4.84.8 6.46.4 가류지연방지제Vulcanization delay agent -- 0.50.5 1One 1.51.5 22 오 일oil 2626 2727 2727 2828 3030 스테아린산Stearic acid 22 22 22 22 22 산화아연Zinc oxide 33 33 33 33 33 노화방지제Anti-aging 44 44 44 44 44 유 황Sulfur 2.32.3 2.12.1 2.02.0 2.02.0 2.02.0 가황촉진제Vulcanization accelerator 1.31.3 1.41.4 1.61.6 1.71.7 1.91.9

< 시험예 1 ><Test Example 1>

상기 표 1의 조성물로 제조한 고무의 경도, 300% 모듈러스, 인장강도, 신율, 동적점탄성 등의 물성을 ASTM 시험법과 Instron 장치를 이용하여 측정하였으며 이의 결과를 아래의 표 2에 정리하여 나타내었다.Physical properties of the rubber, 300% modulus, tensile strength, elongation, dynamic viscoelasticity, etc. of the rubber prepared by the composition of Table 1 were measured using ASTM test method and Instron apparatus, and the results are summarized in Table 2 below.

표 2. 본 발명의 비교예와 실시예 조성물의 물성 비교표Table 2. Comparative Table of Physical Properties of Comparative Examples and Example Compositions of the Present Invention

항 목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 경도(Shore A)Shore A 6060 6060 6060 6060 5959 300% 모듈러스(kg/cm2)300% modulus (kg / cm 2 ) 8888 8989 8686 8787 8585 인장강도(kg/cm2)Tensile Strength (kg / cm 2 ) 184184 190190 192192 188188 185185 신 율(%)Elongation (%) 549549 562562 582582 576576 566566 동적 점탄성Dynamic viscoelasticity 0℃ Tanδ0 ℃ Tanδ 0.1600.160 0.1720.172 0.1890.189 0.1980.198 0.2320.232 70℃ Tanδ70 ℃ Tanδ 0.1380.138 0.1250.125 0.1170.117 0.1020.102 0.0850.085

< 시험예 2 ><Test Example 2>

표 1에 나타낸 조성물로 트레드를 압출하여 195/65R15 규격의 승용차용 타이어를 제조하였고, 이들 타이어의 빙설노면에서의 회전저항, 제동 및 가속시험을 시험하였다. 빙설노면에서의 성능시험은 비교예 및 각 실시예의 고무조성물로 제조한 시험타이어를 배기량 2,000cc 시험차량에 장착하고 외기온도 -2.8 ∼ -16.9℃, 노면의 표면온도 -3.2 ∼ -11.9℃의 시험조건에서 평가하였으며 제동시험은 30km/h로 주행 중 급제동을 하여 제동거리를 측정하고 가속시험은 정지상태에서 출발하여 20m에 도달할 때까지 걸리는 시간과 이때의 최고속도를 측정하여 이의 결과를 아래의 표 3에 정리하여 나타내었다. 이때 성능 시험결과는 비교예의 트레드 고무로 제조된 타이어 성능을 100으로 할 때 그 지수가 클수록 제반성능이 우수함을 나타낸 것이다.The treads were extruded with the compositions shown in Table 1 to produce tires for passenger cars of the 195 / 65R15 standard, and the rolling resistance, braking and acceleration tests were tested on the snow surface of these tires. The performance test on the snow surface was carried out by mounting a test tire made of the rubber composition of the comparative example and each example on a test vehicle with a displacement of 2,000 cc, and having an outside temperature of -2.8 to -16.9 ° C and a surface temperature of -3.2 to -11.9 ° C. The braking test measures the braking distance by braking while driving at 30 km / h.The acceleration test measures the time taken from the standstill to reach 20m and the maximum speed at this time. Table 3 shows the result. At this time, the results of the performance test shows that when the tire performance made of the tread rubber of the comparative example is 100, the larger the index, the better the overall performance.

내마모 성능은 195/65R15 규격의 시험타이어를 배기량 2,000cc 시험차량에 장착하고 일반도로에서 30,000km를 주행한 후 마모상태와 구루브(Groove)의 깊이 변화량을 측정하였다.The abrasion resistance performance was measured by wearing a 195 / 65R15 standard test tire on a 2,000cc displacement test vehicle, driving 30,000km on a general road, and measuring the change of wear and depth of groove.

표 3. 본 발명의 비교예와 실시예 타이어의 성능 비교표Table 3. Performance comparison table of Comparative Example and Example tire of the present invention

항 목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 회전저항Rolling resistance 100100 110110 115115 114114 115115 제동성능Braking performance 100100 101101 105105 106106 106106 가속성능Acceleration performance 100100 101101 106106 106106 108108 내마모성능Wear resistance 100100 9999 9999 9898 9898

본 발명은 종래의 동절기 타이어용 트레드 부위에 고무보강제로 사용하는 카본블랙의 일부를 실리카로 대체하여 겨울철 빙설노면에서의 제동력을 유지하면서 회전저항을 감소시켜 연료소모를 줄임으로써 연비효율을 향상시킬 수 있다.The present invention is to replace the portion of the carbon black used as a rubber reinforcement in the conventional tread for winter tires with silica to improve the fuel efficiency by reducing the fuel consumption by reducing the rolling resistance while maintaining the braking force on the winter snow surface. have.

Claims (3)

천연고무와 합성고무가 4:6 비율로 혼합한 원료고무 100 중량부, 카본블랙 40∼70 중량부, 실리카 10∼40 중량부, 커플링제 1.6∼6.4 중량부, 가류지연 방지제 로 분자량이 4,000인 에틸렌글리콜 0.5∼2 중량부, 오일 28∼30 중량부, 스테아린산 2 중량부, 산화아연 3 중량부, 노화방지제 4 중량부, 유황 2.0∼2.1 중량부, 가황촉진제 1.4∼1.9 중량부로 구성됨을 특징으로 하는 스노우 타이어용 트레드 고무 조성물.100 parts by weight of raw rubber mixed with natural and synthetic rubber in a 4: 6 ratio, 40 to 70 parts by weight of carbon black, 10 to 40 parts by weight of silica, 1.6 to 6.4 parts by weight of coupling agent, and a vulcanization delaying agent with a molecular weight of 4,000. Ethylene glycol 0.5 to 2 parts by weight, oil 28 to 30 parts by weight, stearic acid 2 parts by weight, zinc oxide 3 parts by weight, antioxidants 4 parts by weight, sulfur 2.0 to 2.1 parts by weight, vulcanization accelerator 1.4-1.9 parts by weight Tread rubber composition for snow tires. 제 1항에 있어서, 합성고무는 폴리스타이렌-부타디엔 고무와 폴리부타디엔 고무가 2:1 비율로 구성됨을 특징으로 하는 스노우 타이어용 트레드 고무조성물.The tread rubber composition for a snow tire according to claim 1, wherein the synthetic rubber is composed of 2: 1 ratio of polystyrene-butadiene rubber and polybutadiene rubber. 제 1항에 있어서, 커플링제는 설파이드실란(Sulfidsilane, sI-69)과 카본블랙(N330)이 50:50으로 혼합된 것 임을 특징으로 하는 스노우 타이어용 트레드 고무조성물.The tread rubber composition according to claim 1, wherein the coupling agent is a 50:50 mixture of sulfidesilane (SI-69) and carbon black (N330).
KR1019990017395A 1999-05-14 1999-05-14 Tread Rubber Composition for Snow Tire KR100308880B1 (en)

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