KR100764560B1 - Rubber composition for snow tier tread - Google Patents

Rubber composition for snow tier tread Download PDF

Info

Publication number
KR100764560B1
KR100764560B1 KR1020060076981A KR20060076981A KR100764560B1 KR 100764560 B1 KR100764560 B1 KR 100764560B1 KR 1020060076981 A KR1020060076981 A KR 1020060076981A KR 20060076981 A KR20060076981 A KR 20060076981A KR 100764560 B1 KR100764560 B1 KR 100764560B1
Authority
KR
South Korea
Prior art keywords
rubber
nanoclay
parts
weight
rubber composition
Prior art date
Application number
KR1020060076981A
Other languages
Korean (ko)
Inventor
최재선
박해랑
Original Assignee
한국타이어 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020060076981A priority Critical patent/KR100764560B1/en
Application granted granted Critical
Publication of KR100764560B1 publication Critical patent/KR100764560B1/en

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • 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
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • 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
    • C08K3/346—Clay
    • 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
    • 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
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

Abstract

A rubber composition for snow tire treads is provided to enhance strength of a rubber composition by using nanoclay, thereby improving a handling stability and an increased coefficient of friction on ice. A rubber composition for snow tire treads includes raw material rubbers, a reinforcing agent, a blowing agent, and other additives, wherein nanoclay is contained in an amount of 5-30 parts by weight based on 100 parts by weight of the raw material rubbers. The nanoclay is obtained by treating the surfaces of plate-like clay with polyolefinic oligomers and polymers. The plate-like nanoclay has a thickness of 1-5nm, an aspect ratio of 200-500, a width of 100-2000nm, and an inter-plate gap of 10-50Å.

Description

스노우 타이어 트레드용 고무조성물{Rubber composition for snow tier tread}Rubber composition for snow tire treads {Rubber composition for snow tier tread}

본 발명은 타이어 트레드용 고무조성물에 관한 것으로서, 더욱 상세하게는 발포고무를 사용하는 기존의 스노우 타이어용 트레드 고무 조성물에 나노클레이를 첨가하여 빙상 제동성능 및 조종안정성을 향상시킨 고무조성물에 관한 것이다. The present invention relates to a rubber composition for tire treads, and more particularly, to a rubber composition which improves ice sheet braking performance and steering stability by adding nanoclay to an existing tread rubber composition for snow tires using foamed rubber.

타어어의 빙상 제동성을 향상시키기 위한 종래의 방법으로는 트레드 표면에 스파이크(spike)를 부착시키는 방법이 사용되어 왔다. 그러나 스파이크 핀으로 인한 소음 발생 및 승차감 저하, 스파이크 핀에 집중된 응력 누적에 의한 핀의 마모 현상과 같은 성능의 저하와 더불어 도로 파손 및 분진 발생과 같은 환경 문제가 대두되면서 그 사용이 규제되고 있다. As a conventional method for improving ice braking of a tier, a method of attaching spikes to a tread surface has been used. However, its use is regulated due to the deterioration of performance such as noise generation and riding comfort due to spike pins, wear of the pins due to stress accumulation concentrated on spike pins, and environmental problems such as road breakage and dust generation.

이를 대체하여 겨울용 타이어의 빙상 노면에서의 제동성능을 향상시키기 위한 기술은 트레드 고무에 발포형태의 기공을 만들거나, 글래스 화이버와 같은 물질을 투입하는 방법 등으로 발전되었으며, 최근에는 글래스 화이버를 대체하여 다공질 경석과 같은 고경도 물질을 추가하는 기술도 개시되어 있다.In order to improve the braking performance on the ice road surface of winter tires, the technology has been developed by making foamed pores in the tread rubber or injecting a material such as glass fiber, and recently replacing glass fiber. Techniques for adding high hardness materials, such as porous pumice, are also disclosed.

또한, 발포고무의 제동 성능을 향상시키기 위하여 발포와 함께 글래스 화이버, 조개 껍질과 같은 고경도 물질 등을 동시에 사용하는 기술이 개시되어 있으며, 분쇄 가루로 발포와 함께 폐타이어 가루를 이용하는 방안 등이 제시되고 있다.In addition, in order to improve the braking performance of foam rubber, a technique of simultaneously using a high hardness material such as glass fiber and clam shell together with foaming is disclosed, and a method of using waste tire powder with foaming as a ground powder is proposed. It is becoming.

그러나, 이와 같이 발포제 첨가에 의해 고무 내부에 기공을 형성시킬 경우, 고무 전체의 강도가 저하되어 변형에 저항하는 힘이 약해지면서 타이어의 마모성능을 저하시키기 쉽고, 차량의 조향에 따라 트레드 고무의 급격한 변형으로 조정안정성이 급격히 저하되는 문제가 있었다.  However, in the case of forming pores in the rubber by the addition of the blowing agent, the strength of the entire rubber is lowered, the force to resist deformation is weakened, and the wear performance of the tire is easily reduced, and the tread rubber is suddenly affected by the steering of the vehicle. There was a problem that the stability of adjustment drastically deteriorated by deformation.

이에, 본 발명자들은 상기와 같이 겨울철 노면에서의 제동 성능을 향상시키기 위해 발포제를 포함시켜 발포시킨 발포고무를 스노우 타이어 트레드용 고무 조성물에 사용하는 문제점을 극복하기 위해 연구 노력하던 중, 발포제 이외에 나노클레이를 사용한 결과, 나노클레이가 타이어 표면에서 마이크로 스파이크 역할을 함으로써 빙상마찰계수를 향상시키고, 고무의 보강성을 높여 발포고무 사용에 의한 강성 저하를 보완할 수 있을 알게 되어 본 발명을 완성하게 되었다. Thus, the inventors of the present invention while trying to overcome the problem of using the foamed rubber foamed by including a foaming agent in the rubber composition for snow tire tread to improve the braking performance on the road surface in winter as described above, in addition to the nanoclay As a result, the nanoclay acts as a micro spike on the tire surface, thereby improving the ice coefficient of friction and increasing the reinforcement of the rubber to compensate for the decrease in rigidity due to the use of foam rubber, thereby completing the present invention.

따라서, 본 발명의 목적은 나노클레이를 사용함으로써 고무조성물의 강도를 높여 조종 안정성을 향상시키고, 나노클레이가 트레드 표면에서 마이크로 스파이크 역할을 함으로써 빙상마찰계수를 향상시킨 타이어 트레드용 고무 조성물을 제공하는 데 있다.   Accordingly, an object of the present invention is to provide a rubber composition for tire treads by improving the strength of the rubber composition by using the nanoclay to improve the steering stability, the nanoclay acts as a micro spike on the tread surface to improve the ice sheet friction coefficient have.

상기와 같은 목적을 달성하기 위한 본 발명의 스노우 타이어 트레드용 고무 조성물은 원료고무, 카본블랙 및 실리카, 발포제, 기타 첨가제를 포함하는 구성에 , 나노클레이를 상기 원료고무 100중량부에 대해 5 내지 30중량부 되도록 포함하는 것을 그 특징으로 한다.  Rubber composition for snow tire tread of the present invention for achieving the above object is a composition containing raw material rubber, carbon black and silica, blowing agent, other additives, 5 to 30 nanoclays based on 100 parts by weight of the raw material rubber It is characterized by including to be part by weight.

이와 같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.

본 발명의 스노우 타이어 트레드용 고무 조성물에는 고무의 강도를 향상시키는 것과 함께 빙상 제동성능 향상을 위한 방안으로서, 발포고무와 나노클레이를 사용한다. 다시 말해 발포제를 사용하여 발포시킨 발포고무에 나노클레이를 혼용하여 겨울철 눈이나 빙상 노면에서의 제동성능 및 조종 안정성을 향상시킨 것이다.  In the rubber composition for snow tire tread of the present invention, foamed rubber and nanoclay are used as a method for improving the strength of ice sheet braking while improving the strength of rubber. In other words, nanoclay is mixed with foamed rubber foamed with a blowing agent to improve braking performance and steering stability in winter snow or ice.

나노클레이는 판상의 구조를 가지는 클레이의 층 사이에 양이온성의 폴리올레핀계 올리고머 및 고분자로 표면 처리함으로써 판상 간 간격을 넓혀 입자간 결합력을 떨어뜨린 것으로, 개별 판상의 두께가 1 내지 5nm 수준이고, 편평비가 200~500 정도이고, 폭이 약 100~15000nm이며, 판상 간 간격이 10~50Å인 것이면 그 종류에 한정되지 않고 모두 사용가능하다. 또한, 상기 클레이의 표면처리에 사용되는 폴리올레핀계 고분자로는 폴리에틸렌, 폴리프로필렌, 폴리이소부틸렌 등이 있으나, 이에 한정되는 것은 아니다.   Nanoclay is a surface treatment between cationic polyolefin-based oligomer and polymer between layers of clay having a plate-like structure to increase the gap between plates to reduce the binding force between particles. It is about 200 to 500, width is about 100 to 15000 nm, and the spacing between plates is 10 to 50 micrometers. In addition, the polyolefin-based polymer used for the surface treatment of the clay, but is not limited to polyethylene, polypropylene, polyisobutylene, and the like.

이와같은 나노클레이는 기존의 카본블랙과 실리카와 같은 보강재와 비교하여 보강 효과가 우수하기 때문에 발포고무의 사용에 의한 고무 블록 강성 저하를 보완할 뿐 아니라, 높은 편평비를 가지는 나노클레이의 비등방성에 의한 마이크로 스파 이크 효과를 기대할 수 있으므로 발포 기공에 의한 수막제거 및 마이크로 에지 효과와 더불어 제동성능을 추가로 향상시키는 역할을 수행한다.  Since these nanoclays have superior reinforcing effects compared to conventional reinforcing materials such as carbon black and silica, they not only compensate for the deterioration of rubber block stiffness due to the use of foamed rubber, but also the micro anisotropy of nanoclays having a high flatness ratio. As the spark effect can be expected, it plays a role of further improving the braking performance along with the water film removal and micro edge effect by the foamed pores.

이와 같은 역할을 하는 나노클레이의 첨가량은 원료고무 100중량부에 대해 5 내지 30중량부, 바람직하기로는 10 내지 20중량부이다. 만일, 나노클레이의 첨가량이 원료고무 100중량부에 대해 5중량부 미만이면 트레드의 표면에서 스파이크 역할을 충분히 기대할 수 없고, 30중량부를 초과하면 나노클레이에 의한 보강성의 증가 효과가 미미해진다.  The amount of the nanoclay to play such a role is 5 to 30 parts by weight, preferably 10 to 20 parts by weight based on 100 parts by weight of the raw material rubber. If the amount of the nanoclay added is less than 5 parts by weight based on 100 parts by weight of the raw material rubber, it is impossible to sufficiently expect the role of spike on the surface of the tread. When the amount of the nanoclay exceeds 30 parts by weight, the effect of increasing the reinforcement by the nanoclay is insignificant.

본 발명의 타이어 트레드 고무 조성물에 있어서, 원료고무는 통상 겨울철 타이어 트레드에 적합한 천연고무와 부타디엔 고무로 이루어지며, 이때 부타디엔 고무는 전체 원료고무 중 10~60중량%로 포함된다.   In the tire tread rubber composition of the present invention, the raw material rubber is usually made of natural rubber and butadiene rubber suitable for the winter tire tread, wherein butadiene rubber is contained in 10 to 60% by weight of the total raw rubber.

발포제는 눈이나 빙상 노면에서의 제동성능을 향상시키기 위해 타이어 트레드용 발포 고무 조성물에 통상 포함되는 것이면 어느 것이나 사용할 수 있으며, 그 함량은 통상 원료고무 100중량부에 대해 1 내지 5중량부이다. 발포제의 함량이 원료고무 100중량부에 대해 1중량부 미만이면 발포의 생성이 너무 작고, 5중량부 초과면 발포 생성이 많아져 고무 물성이 급격히 저하된다.  The foaming agent may be used as long as it is normally included in the foamed rubber composition for tire treads to improve braking performance on snow or ice road surfaces, and its content is usually 1 to 5 parts by weight based on 100 parts by weight of the raw material rubber. If the content of the blowing agent is less than 1 part by weight based on 100 parts by weight of the raw material rubber, the production of foaming is too small. If the content of the blowing agent is more than 5 parts by weight, the production of foaming increases, and the rubber physical properties are drastically reduced.

또한, 본 발명의 타이어 트레드 고무 조성물 중에는 강도를 보강시키기 위해 카본블랙 및 실리카와 같은 보강제를 포함하는 바, 두 보강제 중 한 종류를 선택해서 사용하거나 카본블랙 및 실리카를 혼용하여 사용하는 것이 가능하다. 카본블랙은 BET 표면적 110 내지 150㎡/g이며, DBP 흡유량 110 내지 150ml/100g인 것으로, 상기 원료고무 100중량부에 대해 100중량부 이내로 사용하는 것이 바람직하다.   In addition, the tire tread rubber composition of the present invention includes a reinforcing agent such as carbon black and silica in order to reinforce strength, so that one of the two reinforcing agents may be selected or used in combination of carbon black and silica. The carbon black has a BET surface area of 110 to 150 m 2 / g, a DBP oil absorption of 110 to 150 ml / 100 g, and is preferably used within 100 parts by weight based on 100 parts by weight of the raw material rubber.

실리카는 BET 표면적 130 내지 250㎡/g이며, CTAB 표면적 130 내지 190㎡/g이고, DBP 흡유량 110 내지 150ml/100g인 것으로, 상기 원료고무 100중량부에 대하여 100중량부 이내인 것이 바람직하다. 보강제의 함량이 상기 범위를 벗어나면 타이어 마모성능의 급격한 저하 또는 젖은 노면에서의 제동성능이 저하되는 문제가 있을 수 있다. The silica has a BET surface area of 130 to 250 m 2 / g, CTAB surface area of 130 to 190 m 2 / g, and a DBP oil absorption of 110 to 150 ml / 100 g, preferably 100 parts by weight or less based on 100 parts by weight of the raw material rubber. If the content of the reinforcing agent is out of the above range, there may be a problem that a sharp drop in the tire wear performance or a braking performance on the wet road surface is reduced.

그밖에, 본 발명의 타이어 트레드용 고무 조성물에는 상기한 조성 이외에도 프로세스 오일, 활성제로서 스테아린산이나 산화아연, 노화방지제, 가류제 및 가류촉진제 등과 같은 통상의 타이어 트레드용 고무 조성물에 포함되는 첨가제를 포함할 수 있음은 물론이다.   In addition, the rubber composition for tire treads of the present invention may include, in addition to the above-mentioned composition, additives included in conventional tire tread rubber compositions such as stearic acid, zinc oxide, antioxidants, vulcanizing agents and vulcanization accelerators as process oils and activators. Of course.

이하, 본 발명을 실시예에 의거하여 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.   Hereinafter, the present invention will be described in detail with reference to the following Examples, but the present invention is not limited by the Examples.

실시예 1 내지 3 및 비교예 1 내지 3 Examples 1 to 3 and Comparative Examples 1 to 3

본 발명에서는 발포제로 OBSH(p,p-oxybis benzene sulfonyl hydrazide)를 사용하였으며, 나노클레이는 Southern Clay사의 MMT25A(탄소수 15 내지 30의 암모늄염으로 개질시킨 나노클레이로서, 판상의 평균 입자경이 약 6㎛이며, 판상 간 간격이 약 20Å인 것임.)를 사용하였다.   In the present invention, OBSH (p, p-oxybis benzene sulfonyl hydrazide) was used as a blowing agent, and the nanoclay is a nanoclay modified with MMT25A (ammonium salt of 15 to 30 carbon atoms) of Southern Clay, having an average particle diameter of about 6 μm. , The spacing between the plates is about 20Å).

다음 표 1은 통상적인 겨울용 스노우 타이어 트레드용 고무에 발포제와 나노클레이를 배합하여 성능 평가한 결과로, 비교예 1은 발포고무만을 사용한 경우이고, 비교예 2는 발포고무를 사용하지 않고 나노클레이만 사용한 경우이며, 비교예 3은 발포고무 및 나노클레이를 모두 사용하지 않은 것이다. 실시예 1 내지 3은 발 포고무와 나노클레이를 동시에 사용한 경우로서 나노클레이의 사용량이 원료고무 100중량부에 대해 5 내지 15중량부 범주인 것이다.  The following Table 1 is a result of the performance evaluation by combining the blowing agent and the nanoclay in the conventional winter snow tire tread rubber, Comparative Example 1 is used only foam rubber, Comparative Example 2 is not using the foam rubber nanoclay only In the case of using, Comparative Example 3 does not use both foamed rubber and nanoclay. Examples 1 to 3 is a case in which the foamed rubber and nanoclay are used at the same time, the amount of nanoclay used is in the range of 5 to 15 parts by weight based on 100 parts by weight of the raw rubber.

다음 표 1의 배합제 외에 본 발명의 실시예와 비교예에서는 공통적으로, 통상적으로 겨울용 스노우 타이어 트레드용 고무 조성물에 사용되는 천연고무 65중량부, 1,4-시스폴리부다디엔 고무 35중량부, 카본블랙(BET 표면적이 95내지 150㎡/g, DBP 흡유량 90 내지 130ml/100g인 것임) 55중량부, 산화아연 3중량부, 스테아린산 2중량부, 아로마틱 오일 25중량부, 노화방지제 3중량부, 왁스 2중량부, 유황 2중량부 및 TBBS(N-t-부틸-2-벤토티아졸 설펜아미드) 1중량부를 혼합하였다. In the following Examples and Comparative Examples of the present invention, in addition to the compounding agent of Table 1, 65 parts by weight of natural rubber, 35 parts by weight of 1,4-cispolybutadiene rubber, which are commonly used in rubber compositions for winter snow tire treads, 55 parts by weight of carbon black (BET surface area of 95 to 150 m 2 / g, DBP oil absorption 90 to 130ml / 100g), 3 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 25 parts by weight of aromatic oils, 3 parts by weight of anti-aging agent, 2 parts by weight of wax, 2 parts by weight of sulfur and 1 part by weight of TBBS (Nt-butyl-2-bentothiazole sulfenamide) were mixed.

얻어진 타이어 트레드용 고무에 대한 인장물성, 마모성능에 대한 측정은 다음과 같은 방법으로 수행하였다.  The measurement of the tensile property and wear performance of the obtained tire tread rubber was performed by the following method.

(1)인장물성: 경도는 Shora A 경도계를 사용하였으며, 인장물성은 인스트롱(Instron)으로 측정하였다.(1) Tensile Properties: Hardness was measured using a Shora A hardness tester, and tensile properties were measured by Instron.

(2)빙상마찰성능은 Dynamic Friction Tester를 이용하여 0℃에서 마모후의 빙상마찰계수를 측정한 결과를 비교예 1을 100으로 하여, 이를 기준으로 지수화하여 표현하였다. 빙상마찰성능은 그 값이 클수록 좋은 것이다. 구체적으로, 마모후의 빙상마찰성능은 시편이 노면에 닿는 부분의 일정량을 마모시키기 위하여 아스팔트 노면에서 5분간 주행한 후에 Dynamic Friction Tester를 이용하여 측정하였다.(2) Ice friction performance was expressed by using the Dynamic Friction Tester to measure the coefficient of ice friction after abrasion at 0 ° C. using Comparative Example 1 as 100. Ice friction performance is better the higher the value. Specifically, the ice friction performance after abrasion was measured using a dynamic friction tester after running for 5 minutes on an asphalt road surface in order to wear down a certain amount of the part where the specimen touches the road surface.

(표 1)Table 1

Figure 112007047093419-pat00001
Figure 112007047093419-pat00001

상기 표 1의 결과로부터, 발포고무와 나노클레이를 동시에 사용한 본 발명의 실시예 1~3은 발포고무만을 사용한 비교예 1이나, 나노클레이만을 사용한 비교예 2, 및 발포고무 및 나노클레이를 모두 사용하지 않은 비교예 3에 비해서 빙상마찰계수 향상 효과가 뚜렷하고 발포고무 사용에 따른 경도 및 모듈러스의 저하를 다소 보완한 것을 알 수 있다. From the results of Table 1, Examples 1 to 3 of the present invention using the foamed rubber and nanoclay at the same time, Comparative Example 1 using only foamed rubber, Comparative Example 2 using only nanoclay, and both foamed rubber and nanoclay are used Compared with Comparative Example 3, which is not used, it can be seen that the ice-friction coefficient improvement effect is obvious and somewhat compensates for the decrease in hardness and modulus according to the use of foam rubber.

이상에서 상세히 설명한 바와 같이, 본 발명에 따라 발포고무에 나노클레이를 사용한 트레드 고무 조성물은 트레드가 마모되면서 나노클레이가 트레드 표면에서 마이크로 스파이크 역할을 함으로써 트레드 고무 조성물의 빙상마찰계수를 대폭 향상시킬 수 있을 뿐 아니라, 나노클레이에 의한 보강효과로 인해 발포고무의 강성 저하를 막을 수 있다.As described in detail above, according to the present invention, the tread rubber composition using the nanoclay in the foamed rubber may significantly improve the ice friction coefficient of the tread rubber composition by the nanoclay acting as a micro spike on the tread surface while the tread is worn. In addition, due to the reinforcing effect of the nanoclay can prevent the reduction of the rigidity of the foam rubber.

Claims (4)

원료고무, 보강제, 발포제 및 기타 첨가제를 포함하는 스노우 타이어 트레드용 고무 조성물에 있어서, In a rubber composition for a snow tire tread comprising raw rubber, reinforcing agent, foaming agent and other additives, 상기 원료고무 100중량부에 대해 나노클레이를 5 내지 30중량부 되도록 포함하고,To include the nanoclay 5 to 30 parts by weight based on 100 parts by weight of the raw material rubber, 상기 나노클레이는 판상 구조의 클레이의 표면을 폴리올레핀계 올리고머 및 고분자로 표면처리한 것임을 특징으로 하는 스노우 타이어 트레드용 고무 조성물.The nanoclay is a rubber composition for a snow tire tread, characterized in that the surface of the clay of the plate-like structure is surface-treated with a polyolefin oligomer and a polymer. 제 1항에 있어서, 상기 보강제는 BET 표면적 110 내지 150㎡/g, DBP 흡유량 110 내지 150ml/100g인 카본블랙을 상기 원료고무 100중량부에 대해 100중량부 이내로, 또는 BET 표면적 130 내지 250㎡/g, CTAB 표면적 130 내지 190㎡/g, DBP 흡유량 110 내지 150ml/100g인 실리카를 100중량부 이내로 각각 단독으로 사용하거나 또는 혼용하여 사용하는 것을 특징으로 하는 스노우 타이어 트레드용 고무조성물.       According to claim 1, wherein the reinforcing agent is a carbon black having a BET surface area of 110 to 150 m 2 / g, DBP oil absorption of 110 to 150ml / 100g within 100 parts by weight based on 100 parts by weight of the raw material rubber, or BET surface area of 130 to 250 m 2 / g, a CTAB surface area of 130 to 190 m 2 / g, DBP oil absorption 110 to 150ml / 100g of silica composition for snow tire tread, characterized in that used alone or in combination to each within 100 parts by weight. 삭제delete 제 1항 또는 제 2항에 있어서, 상기 나노클레이는 개별 판상의 두께가 1∼5nm이고, 편평비(aspect ratio)가 200∼500이고, 폭이 100∼2000nm이며, 판상 간 간격이 10∼50Å인 것을 특징으로 하는 스노우 타이어 트레드용 고무조성물.3. The nanoclay according to claim 1 or 2, wherein each of the nanoclays has a thickness of 1 to 5 nm in an individual plate shape, an aspect ratio of 200 to 500, a width of 100 to 2000 nm, and an interval of 10 to 50 mm between plates. Rubber composition for snow tire tread, characterized in that.
KR1020060076981A 2006-08-16 2006-08-16 Rubber composition for snow tier tread KR100764560B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060076981A KR100764560B1 (en) 2006-08-16 2006-08-16 Rubber composition for snow tier tread

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060076981A KR100764560B1 (en) 2006-08-16 2006-08-16 Rubber composition for snow tier tread

Publications (1)

Publication Number Publication Date
KR100764560B1 true KR100764560B1 (en) 2007-10-08

Family

ID=39419465

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060076981A KR100764560B1 (en) 2006-08-16 2006-08-16 Rubber composition for snow tier tread

Country Status (1)

Country Link
KR (1) KR100764560B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100975878B1 (en) 2008-11-12 2010-08-16 한국타이어 주식회사 Rubber composition of tire tread
WO2014107641A2 (en) * 2013-01-04 2014-07-10 The Texas A&M University System Surface-modified, exfoliated nanoplatelets as mesomorphic structures in solutions and polymeric matrices
US10259948B2 (en) 2014-03-25 2019-04-16 Kaneka Corporation Coating compositions and coating products made therefrom

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100450639B1 (en) 2001-11-26 2004-10-01 한국타이어 주식회사 Rubber composition for tire tread using nanoclay as reinforcing agent
KR100452411B1 (en) 2002-05-07 2004-10-12 한국타이어 주식회사 Tire tread rubber composition
US6858665B2 (en) 2001-07-02 2005-02-22 The Goodyear Tire & Rubber Company Preparation of elastomer with exfoliated clay and article with composition thereof
KR100592514B1 (en) 2003-12-23 2006-06-23 금호타이어 주식회사 Tread compound for tire including ionic polymer and nano-clay

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6858665B2 (en) 2001-07-02 2005-02-22 The Goodyear Tire & Rubber Company Preparation of elastomer with exfoliated clay and article with composition thereof
KR100450639B1 (en) 2001-11-26 2004-10-01 한국타이어 주식회사 Rubber composition for tire tread using nanoclay as reinforcing agent
KR100452411B1 (en) 2002-05-07 2004-10-12 한국타이어 주식회사 Tire tread rubber composition
KR100592514B1 (en) 2003-12-23 2006-06-23 금호타이어 주식회사 Tread compound for tire including ionic polymer and nano-clay

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100975878B1 (en) 2008-11-12 2010-08-16 한국타이어 주식회사 Rubber composition of tire tread
WO2014107641A2 (en) * 2013-01-04 2014-07-10 The Texas A&M University System Surface-modified, exfoliated nanoplatelets as mesomorphic structures in solutions and polymeric matrices
WO2014107641A3 (en) * 2013-01-04 2014-09-12 The Texas A&M University System Surface-modified, exfoliated nanoplatelets as mesomorphic structures in solutions and polymeric matrices
US9321919B2 (en) 2013-01-04 2016-04-26 The Texas A&M University System Surface-modified, exfoliated nanoplatelets as mesomorphic structures in solutions and polymeric matrices
US10259948B2 (en) 2014-03-25 2019-04-16 Kaneka Corporation Coating compositions and coating products made therefrom

Similar Documents

Publication Publication Date Title
CA2145355C (en) Pneumatic tire having formed rubber
DK150681B (en) VULCANIZABLE CAUTION MIXTURE FOR TIRE COATS FOR DAEK, ISAER VINTERDAEK
JPH0544361B2 (en)
KR100764560B1 (en) Rubber composition for snow tier tread
JP4683490B2 (en) Rubber composition for tread of studless tire
KR100639884B1 (en) Rubber composition for snow tire tread
JP4976665B2 (en) Rubber composition for tread and pneumatic tire
JPH02308832A (en) Rubber composition for tire tread
KR100894452B1 (en) Rubber composition for tire tread
KR100709974B1 (en) Rubber composition for tire tread
EP1482007A1 (en) Rubber compound for tire and tire employing the same
KR100975878B1 (en) Rubber composition of tire tread
KR20050046851A (en) Rubber composition for tire tread
JPH11254909A (en) Pneumatic tire
KR100809631B1 (en) Tread rubber composition fot snow tire
KR20070087873A (en) Tire tread composition for winter
JP4350973B2 (en) Rubber composition for tire and studless tire
KR101128763B1 (en) Rubber composition for studless tire tread for winter
JP2661920B2 (en) Pneumatic tire
KR100351022B1 (en) Tire tread composition
KR101377361B1 (en) Pneumatic tire with improved wet-grip propery
JP2004300340A (en) Rubber composition for tire and pneumatic tire
KR100570266B1 (en) Silica and Silane Coupling Reinforced Silica Tread Compound
KR100606190B1 (en) Rubber composition for studless snow tire tread
CA2030087A1 (en) Pneumatic tire for all-weather use

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
G170 Publication of correction
FPAY Annual fee payment

Payment date: 20100930

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20131001

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee