KR19980052352A - Rubber composition for hump strip of tire - Google Patents
Rubber composition for hump strip of tire Download PDFInfo
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- KR19980052352A KR19980052352A KR1019960071337A KR19960071337A KR19980052352A KR 19980052352 A KR19980052352 A KR 19980052352A KR 1019960071337 A KR1019960071337 A KR 1019960071337A KR 19960071337 A KR19960071337 A KR 19960071337A KR 19980052352 A KR19980052352 A KR 19980052352A
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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
- C08L21/00—Compositions of unspecified rubbers
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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
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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
- C08K3/06—Sulfur
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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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
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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
- C08L7/00—Compositions of natural rubber
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
- C08L2666/08—Homopolymers or copolymers according to C08L7/00 - C08L21/00; Derivatives thereof
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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
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/28—Non-macromolecular organic substances
- C08L2666/38—Sulfur-, selenium- or tellurium-containing compounds
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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
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/54—Inorganic substances
- C08L2666/64—Sulfur
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Abstract
본 발명은 타이어의 험프스트립용 고무조성물에 관한 것으로, 더욱 상세하게는 타이어의 험프 스트립의 요구 물성인 경도, 내마멸성, 강성 및 내영구 압축 변형율 등은 그대로 높은 수준을 유지하면서 터프니스와 내열 노화성이 크게 개선된 고무조성물을 제공하는 것이다.The present invention relates to a rubber composition for hump strips of a tire, and more particularly, toughness and heat aging resistance while maintaining high levels of hardness, abrasion resistance, stiffness, and permanent compression set, which are required properties of a hump strip of a tire. It is to provide this greatly improved rubber composition.
본 발명은 천연고무 10 내지 50중량부와 디엔계 고무나 디엔계 공중합 고무 50 내지 90중량부를 기재고무로 하고, 상기 기재 고무 100중량부에 대해서 흡착 표면적이 70 내지 130㎡/g인 카본 블랙을 40 내지 80중량부 및 통상의 배합제를 첨가하여 제조되는 타이어의 험프스트립용 고무조성물에 있어서, 노볼락 타입 페놀수지 1 내지 10중량부, 메틸렌 공여체 0.1 내지 3중량부, 유황 0.5 내지 4중량부, 유황 공여체는 0.1 내지 3중량부로 이루어지는 것을 특징으로 하는 타이어의 험프스트립용 고무조성물에 관한 것이다.The present invention is based on 10 to 50 parts by weight of natural rubber and 50 to 90 parts by weight of diene rubber or diene copolymer copolymer rubber, and carbon black having an adsorption surface area of 70 to 130 m 2 / g relative to 100 parts by weight of the base rubber. In the rubber composition for hump strip of a tire manufactured by adding 40 to 80 parts by weight and a conventional compounding agent, 1 to 10 parts by weight of a novolak type phenolic resin, 0.1 to 3 parts by weight of methylene donor, and 0.5 to 4 parts by weight of sulfur The sulfur donor relates to a rubber composition for hump strips of a tire, characterized in that consisting of 0.1 to 3 parts by weight.
Description
[발명의 명칭][Name of invention]
타이어의 험프스트립용 고무조성물Rubber composition for hump strip of tire
[발명의 상세한 설명]Detailed description of the invention
본 발명은 타이어의 험프스트립용 고무조성물에 관한 것으로, 더욱 상세하게는 타이어의 험프 스트립의 요구 물성인 경도, 내마멸성, 강성 및 내영구 압축 변형율 등은 그대로 높은 수준을 유지 하면서 터프니스와 내열 노화성이 크게 개선된 고무조성물을 제공하는 것이다.The present invention relates to a rubber composition for hump strips of tires, and more particularly, toughness and heat aging resistance while maintaining high levels of hardness, abrasion resistance, stiffness and permanent compression set, which are required properties of hump strips of tires. It is to provide this greatly improved rubber composition.
[발명의 목적][Purpose of invention]
[발명이 속하는 기술분야 및 그 분야의 종래기술][Technical Field to which the Invention belongs and Prior Art in the Field]
일반적으로 타이어 비드부의 험프스트립은 높은 터프니스와 경고, 내마멸성, 상대적으로 낮은 영구 압축변형율, 내열노화성 등의 요구되는 고무조성물로 이루어져 있다. 특히, 최근에는 환경보호와 자원절약 측면에서 타이어의 재생성 향상 요구가 높아지고 있는 상황에서 비드부의 내구성 향상을 위한 재료의 터프니스와 내열노화성이 크게 강조되고 있다.In general, the hump strip of the tire bead portion is composed of the required rubber composition such as high toughness and warning, abrasion resistance, relatively low permanent compression set, and heat aging resistance. In particular, in recent years, the demand for improving tire recyclability is increasing in terms of environmental protection and resource saving, and the toughness and heat aging resistance of materials for improving the durability of the bead portion have been emphasized.
이와 같은 험프스트립 고무조성물은 카본 블랙, 유황, 그리고 가류촉진제와 같은 첨가제를 다량 투입하여야 한다. 이러한 고무 조성물에서 다량의 유황 첨가는 압출고무에서 유황의 석출을 야기시켜 생산성 및 물성 저하를 초래하는 요인이 되며, 내열노화성에서도 매우 불리한 효과를 미친다.Such hump strip rubber compositions should be loaded with additives such as carbon black, sulfur and vulcanization accelerators. The addition of a large amount of sulfur in such a rubber composition causes precipitation of sulfur in the extruded rubber, leading to a decrease in productivity and physical properties, and also has a very disadvantageous effect in heat aging resistance.
현재까지 위와 같은 험프 스트립의 여러 가지 특성을 만족시키기 위하여 천연 고무와 합성 고무의 혼용 및 혼용비율의 조정, 카본블랙의 등급 조정 등의 여러가지 기술들이 사용되고 있다. 특히 최근에는 내마멸성 향상을 위해 천연고무와 합성고무의 혼용율에서 합성고무 특히, 부타디엔 고무의 혼용율을 크게 증가시키고 있는 추세로 내마멸성에서는 만족할 만한 수준을 얻고 있지만, 천연고무 혼용율 감소로 인해 터프니스 측면에서는 불리하며, 이러한 단점은 노화 후 터프니스 부족으로 타이어의 내구성에서의 문제점은 물론 타이어의 재생을 불가능하게 만든다. 터프니스라 함은 외부의 파괴 스트레스에 대응하는 재료의 저항 능력을 말하며, 터프니스의 척도는 신장율과 인장강도로서 신장율과 인장강도가 크다는 것은 터프니스가 크다는 것을 의미한다.To date, various technologies such as mixing and mixing ratios of natural rubber and synthetic rubber and adjusting carbon black are used to satisfy various characteristics of the hump strip. In particular, in recent years, the mixing ratio of natural rubber and synthetic rubber has been greatly increased in the blending ratio of natural rubber and synthetic rubber to improve abrasion resistance, and has been satisfactory in abrasion resistance, but it is disadvantageous in terms of toughness due to the decrease in the mixing ratio of natural rubber. In addition, this drawback is not only a problem in the durability of the tire due to lack of toughness after aging, but also makes it impossible to regenerate the tire. Toughness refers to the ability of a material to respond to external fracture stresses. Toughness is measured by elongation and tensile strength, which means that elongation and tensile strength are high.
또한, 가황계에서는 고경도 유지를 위해 모두 유황/가황촉진제 비 값이 높은 컨벤셔널 가류계를 사용하고 있다. 이러한 컨벤셔널 가황계는 가류 후, 주로 폴리설파이드 가교가 형성되므로 내열노화성과 영구압축 변형율에 불리한 효과를 미친다.In addition, the vulcanization system uses a conventional vulcanization system with a high sulfur / vulcanization accelerator ratio value to maintain high hardness. Such a conventional vulcanized system has a disadvantageous effect on heat aging resistance and permanent compressive strain since polysulfide crosslinking is mainly formed after vulcanization.
이와 같이 터프니스를 올리기 위해 천연고무 혼용율을 높이면 내마멸성이 불리해지고, 내열 노화성을 개선하기 위해 유황량을 줄이면 경도 저하와 영구 압축 변형율이 불리하게 되므로 험프스트립용 고무 조성물의 요구 물성을 만족시키면서 터프니스 및 내열노화성을 동시에 향상시키는 것은 지금까지 커다란 난제로 여겨져 왔었다.As such, increasing the mixing ratio of natural rubber to increase toughness is disadvantageous to wear resistance, and reducing sulfur to improve heat aging resistance is disadvantageous to lower hardness and permanent compression strain, thus satisfying the toughness of the rubber composition for hump strips. Improving both varnish and heat aging at the same time has been considered a big challenge until now.
[발명이 이루고자 하는 기술적 과제][Technical problem to be achieved]
본 발명의 목적은 험프스트립의 요구 물성인 경도 내마멸성, 강성 및 내영구 압축변형율 등을 그대로 높은 수준을 유지하면서 터프니스와 내열 노화성이 크게 개선된 고무 조성물을 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide a rubber composition having greatly improved toughness and heat aging resistance while maintaining high levels of hardness, abrasion resistance, rigidity, and permanent compression set, which are required properties of the hump strip.
본 발명의 또다른 목적은 터프니스와 내열노화성을 크게 개선함으로써 타이어 특히 래디알 타이어 비드부의 내구성과 타이어 재생성이 매우 우수한 험프스트립 고무조성물을 제공하는데 있다.It is still another object of the present invention to provide a hump strip rubber composition having excellent durability and tire reproducibility of tires, particularly radial tire bead portions, by greatly improving toughness and heat aging resistance.
[발명의 구성 및 작용][Configuration and Function of Invention]
본 발명은 천연고무 10 내지 50중량부와 디엔계 고무나 디엔계 공중합 고무 50 내지 90중량부를 기재고무로 하고, 상기 기재 고무 100중량부에 대해서 흡착 표면적이 70 내지 130㎡/g인 카본 블랙을 40 내지 80중량부 및 통상의 배합제를 첨가하여 제조되는 타이어의 험프스트립용 고무조성물에 있어서, 노볼락 타입 페놀수지 1 내지 10중량부, 메틸렌 공여체 0.1 내지 3중량부, 유황 0.5 내지 4중량부, 유황 공여체는 0.1 내지 3중량부로 이루어지는 것을 특징으로 하는 타이어의 험프스트립용 고무조성물에 관한 것이다.The present invention is based on 10 to 50 parts by weight of natural rubber and 50 to 90 parts by weight of diene rubber or diene copolymer copolymer rubber, and carbon black having an adsorption surface area of 70 to 130 m 2 / g relative to 100 parts by weight of the base rubber. In the rubber composition for hump strip of a tire manufactured by adding 40 to 80 parts by weight and a conventional compounding agent, 1 to 10 parts by weight of a novolak type phenolic resin, 0.1 to 3 parts by weight of methylene donor, and 0.5 to 4 parts by weight of sulfur The sulfur donor relates to a rubber composition for hump strips of a tire, characterized in that consisting of 0.1 to 3 parts by weight.
이하, 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.
본 발명은 기재고무로 천연고무 10 내지 50중량부와 디엔계 고무나 디엔계 공중합 고무 50 내지 90중량부로 한다.The present invention is made of 10 to 50 parts by weight of natural rubber and 50 to 90 parts by weight of diene rubber or diene copolymer rubber as the base rubber.
상기 기재 고무 100중량부에 대해서 질소 흡착 표면적이 70 내지 130㎡/g인 카본 블랙을 40 내지 80중량부를 첨가 배합한다.40 to 80 parts by weight of carbon black having a nitrogen adsorption surface area of 70 to 130 m 2 / g is added and blended to 100 parts by weight of the base rubber.
본 발명에 의하면 상기의 기재고무와 카본 블랙이 배합된 조성물에 기재고무 100중량부에 대해, 노볼락 타입 페놀수지 1 내지 10중량부, 메틸렌 공여체 0.1 내지 3중량부, 유황 0.5 내지 4중량부, 유황 공여체는 0.1 내지 3중량부로 첨가 배합하는 것을 특징으로 한다.According to the present invention, 1 to 10 parts by weight of novolac type phenol resin, 0.1 to 3 parts by weight of methylene donor, 0.5 to 4 parts by weight of sulfur, based on 100 parts by weight of the base rubber in the composition containing the base rubber and carbon black, The sulfur donor is characterized in that the addition of 0.1 to 3 parts by weight.
상기의 본 발명에서 사용하는 노볼락 타입의 페놀 수지로는 개질된 페놀 수지도 포함하여, 이들은 오일 개질된 페놀 수지, 크레졸 개질된 페놀수지, 캐슈 개질된 페놀 수지, 디시클로펜타디엔 개질된 페놀 수지로 이루어진 페놀 수지를 사용한다. 상기에서 페놀 수지의 첨가량은 1 내지 10중량부를 사용하고, 첨가량이 1중량부 이하이면 경도 및 강성의 유지가 어렵고, 10중량부 이상이면 조성물의 영구 압축 변형율에 불리한 효과를 미친다.The phenolic resins of the novolak type used in the present invention include modified phenolic resins, and these include oil-modified phenolic resins, cresol-modified phenolic resins, cashew-modified phenolic resins, and dicyclopentadiene-modified phenolic resins. The phenol resin which consists of is used. When the amount of the phenol resin is added in an amount of 1 to 10 parts by weight, the addition amount is 1 part by weight or less, it is difficult to maintain the hardness and rigidity.
또한 본 발명에서는 상기 기재 고무에 대해서 메틸렌 공여체를 0.1 내지 3중량부 첨가한다. 상기의 메틸렌 공여체로는 헥사메틸렌테트라민 또는 헥사메톡시메틸멜라민 등이 사용된다.Also in the present invention, 0.1 to 3 parts by weight of a methylene donor is added to the base rubber. Hexamethylenetetramine, hexamethoxymethylmelamine, etc. are used as said methylene donor.
또한 본 발명에서는 상기 기재고무 100중량부에 대해 유황 0.5 내지 4중량부를 첨가한다. 본 발명에서는 천연고무와 부타디엔 고무의 혼용율에서 부타디엔 고무의 혼용 비율을 높게 유지하는 가운데 터프니스와 내열노화성을 개선하기 위해 유황의 사용을 줄이는 방법을 선택하였다.In the present invention, 0.5 to 4 parts by weight of sulfur is added based on 100 parts by weight of the base rubber. In the present invention, a method of reducing the use of sulfur in order to improve toughness and heat aging resistance while maintaining a high mixing ratio of butadiene rubber in the mixing ratio of natural rubber and butadiene rubber was selected.
즉, 유황의 감량으로 인한 고무조성물의 강성과 경도 유지를 위해 본 발명에서는 상기의 노볼락 타입의 페놀수지와 수지의 가교를 위한 메틸렌 공여체를 사용하였다. 그러나 이와 같은 페놀수지와 메틸렌 공여체는 경도 및 강성은 유지해 주지만, 수지의 특성상 어느 정도의 소성을 갖고 있기 때문에 영구압축 변형율에는 불리한 효과를 미친다. 따라서 본 발명에서는 컨벤셔널(conventional) 가황계와 유황/가황촉진제 비 값이 낮은 이브이(EV) 가황계의 중간인 세미-이브이(semi-EV) 가황계를 응용하여 유황 감량과 보강성 수지 사용에 의한 영구 압축 변형율을 유지하였으며, 내열노화성도 개선하였다. 낮은 함량의 유황과 높은 가황 촉진제 수준인 유효 가황계(EV)는 모노설파이드의 비율을 높여 주고, 주쇄 변화를 최소화시키는 것으로 알려져 있다. 중간의 세미-이브이 가황계는 인장강도, 인열강도, 내피로에서는 유리하지만, 열안정과 내산화성에 불리한 특성을 갖고 있는 컨벤셔널 가황계와 열안정성과 내산화성에서는 유리하지만 내피로성과 인장강도에서 불리한 이브의 가황계 사이에서 적절한 상호 보완성 물성을 찾을 수 있는 가황계이다. 또한, 세미-이브이 가황계는 모노 또는 디설파이드의 형성 비율이 높아 영구압축 변형율을 적게 하는데도 유리한 것으로 알려져 있다. 본 발명에서는 유황의 사용량을 줄여 세미-이브이 가황계를 만들기 위해 유황 공여체(sulfur donor)를 사용하였다.That is, in order to maintain the rigidity and hardness of the rubber composition due to the reduction of sulfur, the present invention used a methylene donor for crosslinking the novolac-type phenol resin and the resin. However, these phenolic resins and methylene donors maintain hardness and stiffness, but have a certain degree of plasticity due to the properties of the resin, which has an adverse effect on the permanent compression strain. Therefore, in the present invention, a semi-EV vulcanization system, which is intermediate between the conventional vulcanization system and the low sulfur / vulcanization accelerator ratio EV, is used to reduce sulfur and to use a reinforcing resin. Permanent compression strain was maintained, and heat aging resistance was also improved. Low levels of sulfur and high levels of vulcanization accelerators, known as effective vulcanization systems (EVs), are known to increase the ratio of monosulfide and minimize back chain changes. The intermediate semi-eve vulcanizing system is advantageous in tensile strength, tear strength and fatigue resistance, but it is a conventional vulcanizing system which has disadvantages in thermal stability and oxidation resistance, but favorable in thermal stability and oxidation resistance, but fatigue and tensile strength It is a vulcanizing system where suitable complementary properties can be found among the vulcanizing systems of EVE. In addition, the semi-eve vulcanization system is known to be advantageous in reducing the permanent compression strain due to the high proportion of mono or disulfide. In the present invention, sulfur donors were used to reduce the amount of sulfur used to make the semi-eve vulcanized system.
상기에서 유황/촉진제(가황촉진제, 유황공여체, 및 유황공여체 활성제 포함)비값은 2이하가 바람직하다. 본 발명의 조성물에는 통상의 고무 조성물에 사용되는 첨가제를 배합하는 것이 가능하다. 이러한 첨가제로서는 점착부여제, 가류촉진제, 노화방지제, 기타의 각종 수지 등이 있다.In the above, the sulfur / promoter (including vulcanization accelerator, sulfur donor, and sulfur donor activator) ratio is preferably 2 or less. It is possible to mix | blend the additive used for a normal rubber composition with the composition of this invention. Such additives include tackifiers, vulcanization accelerators, anti-aging agents and other various resins.
본 발명에서 사용는 유황 공여체로는 다음 화학식1을 갖는 알킬페놀 폴리설파이드 또는 다음 화학시2의 몰포린 폴리설파이드를 사용한다.In the present invention, as the sulfur donor, an alkylphenol polysulfide having the following Chemical Formula 1 or a morpholine polysulfide of the following Chemical Formula 2 is used.
[화학식1][Formula 1]
윗식에서 x는 2 내지 10이고, R은 탄소수 2~16의 알킬기를 나타낸다.In the above formula, x is 2 to 10, and R represents an alkyl group having 2 to 16 carbon atoms.
[화학식2][Formula 2]
윗식에서 x는 2 내지 10이 될 수 있다.In the above formula x may be 2 to 10.
[실시예]EXAMPLE
이하 실시예로 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the following examples.
[실시예1 내지 4][Examples 1 to 4]
가류전의 고무 시트는 다음 표 1에 나타낸 고무와 첨가제를 사용하여 통상적인 과정에 의해 준비하였으며, 이러한 고무를 150℃에서 가류하였다.The rubber sheet before vulcanization was prepared by a conventional procedure using the rubber and additives shown in Table 1 below, and the rubber was vulcanized at 150 ° C.
상기 각 실시예에서 얻은 고무조성물의 특성을 측정하여 다음 표 1에 나타내었다.The properties of the rubber composition obtained in each of the above Examples were measured and shown in Table 1 below.
[비교예][Comparative Example]
다음 표 1에 나타난 조성성분으로 한 것을 제외하고는 상기 실시예1과 동일하게 하였다.It was the same as in Example 1 except for using the composition shown in the following Table 1.
상기 비교예1에서 얻은 고무조성물의 특성을 측정하여 다음 표 1에 나타내었다.The rubber composition obtained in Comparative Example 1 was measured and shown in Table 1 below.
[표1]Table 1
*노화조건은 100℃, 96시간임.* Aging condition is 100 ℃, 96 hours.
[발명의 효과][Effects of the Invention]
이와 같이 본 발명에서는 유황의 함량을 줄여 터프니스와 내열 노화성을 개선하기 위해 노볼락 타입 페놀 수지와 메틸렌 공여체 그리고 세미-이브이 가황계로 만들기 위한 유황 공여체를 사용하여 유황의 감량에도 불구하고 험프스트립의 중요물성인 경도, 내마멸성, 강성 및 내영구 압축변형율 등은 그대로 높은 수준을 유지하면서 터프니스와 내열노화성이 크게 개선된 고무 조성물을 얻을 수 있었다.As described above, the present invention uses a novolak-type phenol resin, a methylene donor, and a sulfur donor to make the semi-eve vulcanized to reduce the sulfur content to improve toughness and heat aging resistance. Hardness, abrasion resistance, stiffness and permanent compression set, which are important physical properties, could be obtained while maintaining high levels of toughness and heat aging resistance.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| KR1019960071337A KR100200198B1 (en) | 1996-12-24 | 1996-12-24 | Rubber composition for hump-strip of tire |
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| KR1019960071337A KR100200198B1 (en) | 1996-12-24 | 1996-12-24 | Rubber composition for hump-strip of tire |
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| KR100200198B1 KR100200198B1 (en) | 1999-06-15 |
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| KR1019960071337A KR100200198B1 (en) | 1996-12-24 | 1996-12-24 | Rubber composition for hump-strip of tire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100406518B1 (en) * | 2001-06-01 | 2003-11-20 | 한국타이어 주식회사 | Rubber composition for tire |
| KR101390771B1 (en) * | 2011-12-28 | 2014-04-30 | 한국타이어 주식회사 | Rubber composition for tire hump stripe and tire manufactured by using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101170954B1 (en) * | 2009-12-21 | 2012-08-07 | 한국타이어 주식회사 | Rubber composition for tire hump strip and tire manufactured by using the same |
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1996
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100406518B1 (en) * | 2001-06-01 | 2003-11-20 | 한국타이어 주식회사 | Rubber composition for tire |
| KR101390771B1 (en) * | 2011-12-28 | 2014-04-30 | 한국타이어 주식회사 | Rubber composition for tire hump stripe and tire manufactured by using the same |
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| KR100200198B1 (en) | 1999-06-15 |
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