KR19990024658A - Rubber composition of underrad and belt edge cover of large radial tire - Google Patents

Rubber composition of underrad and belt edge cover of large radial tire Download PDF

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Publication number
KR19990024658A
KR19990024658A KR1019970045909A KR19970045909A KR19990024658A KR 19990024658 A KR19990024658 A KR 19990024658A KR 1019970045909 A KR1019970045909 A KR 1019970045909A KR 19970045909 A KR19970045909 A KR 19970045909A KR 19990024658 A KR19990024658 A KR 19990024658A
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South Korea
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weight
parts
belt edge
edge cover
rubber
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KR1019970045909A
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Korean (ko)
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KR100241627B1 (en
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안용진
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홍건희
한국타이어제조 주식회사
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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
    • 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
    • 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
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • 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
    • B60C2001/0066—Compositions of the belt layers
    • 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
    • C08K3/08—Metals
    • C08K2003/0843—Cobalt

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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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)

Abstract

본 발명은 대형 레디알 타이어의 언더트래드(8)와 벨트에지커버(7)의 고무조성방법에 관한 것으로, 벨트층 상부의 언더트래드(8)와 벨트(3) 끝단부를 고정시키는 벨트에지커버(7)를 소정의 조성방법으로 구성하므로써 주행시 타이어의 내발열성이 향상되어지고 변형이 감소되도록 된 것이다.The present invention relates to a rubber composition method of the under-trad (8) and the belt edge cover (7) of a large radial tire, the belt edge cover (7) for fixing the end of the under-rod (8) and the belt (3) of the upper belt layer ) By the predetermined composition method to improve the heat resistance of the tire during driving and to reduce the deformation.

Description

대형 레디알 타이어의 언더트래드와 벨트에지커버의 고무조성방법Rubber composition of underrad and belt edge cover of large radial tire

본 발명은 대형 레디알 타이어의 언더트래드(under tread)와 벨트에지커버(belt edge cover)의 조성방법에 관한 것으로, 타이어의 언더트래드와 벨트에지커버에 소정의 조성방법을 적용함으로써 내발열성과 재생성이 향상되도록 된 대형 레디알 타이어의 언더트래드와 벨트에지커버의 조성방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming under treads and belt edge covers of large radial tires. The present invention relates to heat resistance and reproducibility by applying a predetermined composition method to the under treads and belt edge covers of tires. The present invention relates to a method of forming underrad and belt edge cover of a large radial tire to be improved.

일반적으로 자동차용 타이어는 노면과 접촉하는 트래드부와 이 트래드부의 양측으로 노면과 차량축으로부터 충격을 흡수하며 카카스(carcass)를 보호하는 측벽부, 카카스를 고정하고 림에 장착되는 비드부 및 트래드와 카카스 사이의 특수코드층으로 노면의 충격을 감소시켜주며 타이의 강도를 보강하는 벨트로 구성되는데, 통상 고무와 같은 탄성체는 금속체에 비하여 적은 응력으로도 비교적 큰 변형이 생김과 동시에 내부 점성으로 인해 응력에 비해서 히스테리시스 손실에 의한 손실 발열이 커지고, 특히 주행시 반복응력을 받아 타이어 내부에 열이 발생하게 되는데, 레디알 타이어는 적층 벨트층간의 끝단 부분에 응력이 집중되므로 이 부분에서 발열과 변형이 커지게 되고 심한 경우 양 벨트 끝단 부분의 벨트층이 박리되어 타이어가 파괴기도 한다.Generally, tires for automobiles have a tread portion in contact with the road surface, sidewall portions that absorb shock from the road surface and the vehicle axle on both sides of the tread portion, protect the carcass, bead portions fixed to the carcass and mounted on the rim, It is a special cord layer between tread and carcass, which reduces the impact on the road surface and reinforces the strength of the tie.In general, an elastic body such as rubber generates relatively large deformation with a small stress compared to a metal body and at the same time, Due to the viscosity, the heat generated by the hysteresis loss is increased compared to the stress, and heat is generated inside the tire due to the repeated stress during driving.In the case of radial tires, since stress is concentrated at the ends between the laminated belt layers, heat generated and deformed , And in severe cases, the belt layer at both ends of the belt peels off and the tires are destroyed. .

따라서, 타이어의 트래드 부위의 발열과 타이어 변형으로 야기되는 타이어의 파괴 및 분리 현상을 방지하기 위해 발열과 변형을 최소화하는 설계기술이 요구되는바, 종래에는 카본블랙을 사용하여 캡트래드의 발열을 낮추는 방법과 벨트 끝단에 벨트에지커버를 장착하여 벨트층의 박리를 방지하여 발열을 감소시키는 방법이 이용되고 있다.Therefore, in order to prevent the destruction and separation of the tire caused by heat generation and tire deformation of the tread portion of the tire, a design technology for minimizing heat generation and deformation is required. In the related art, carbon black is used to lower the heat generation of the cap tread. The method and the method of attaching the belt edge cover to the belt end to prevent peeling of the belt layer to reduce heat generation are used.

그러나, 이와같이 종래의 캡트래드의 발열을 낮추는 방법은 비표면적이 작은 카본블랙을 사용함으로 인해 조성물의 내마모 성능이 저하되어 타이어 전체의 수명이 줄어드는 문제점이 있었다.However, the conventional method of lowering the heat generation of the captrad has a problem in that the wear resistance of the composition is reduced due to the use of carbon black having a small specific surface area, thereby reducing the life of the entire tire.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 벨트층 상부의 언더트래드와 벨트에지커버가 소정의 조성성분을 갖도록하여 트래드부의 발열을 감소시키고 벨트 양 끝단부의 변형을 방지함으로써 내발열성과 재생성이 향상되도록 된 대형 레디알 타이어의 언더트래드와 벨트에지커버의 고무조성방법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, heat resistance by reducing the heat generation of the tread portion and preventing the deformation of both ends of the belt to ensure that the under tread and the belt edge cover of the upper belt layer has a predetermined composition component The object of the present invention is to provide a method for forming rubber of underrad and belt edge cover of a large radial tire to improve performance and reproducibility.

도 1은 본 발명에 따른 고무조성방법이 적용되는 언더트래드와 벨트에지커버가 도시된 타이어의 부분단면도이다.1 is a partial cross-sectional view of a tire showing the under-tread and the belt edge cover to which the rubber composition method according to the present invention is applied.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1 : 캡트래드 2 : 숄더1: captrad 2: shoulder

3 : 벨트 4 : 측벽3: belt 4: side wall

5 : 카카스 6 : 비드5: carcass 6: bead

7 : 벨트에지커버 8 : 언더트래드7: belt edge cover 8: under tread

상기와 같은 목적을 달성하기 위한 본 발명은 도 1에 도시된 바와 같이 벨트(3)와 캡트래드(1) 사이에 소정의 조성성분으로 구성된 언더트래드(8)가 장착되고, 이 언더트래드(8)와 벨트(3)층 사이의 끝단에 소정의 조성으로 된 벨트에지커버(7)가 장착된 구조로 되어있다.In order to achieve the above object, the present invention is equipped with an under tread 8 composed of a predetermined composition between the belt 3 and the cap tread 1, as shown in FIG. ) And a belt edge cover 7 of a predetermined composition is mounted at the end between the layer and the belt 3 layer.

여기서 상기 언더트래드(8)는 고무 100중량부를 기준으로 시스1,4-폴리이소프렌 천연고무 100phr와 카본블랙 30 내지 45phr, 침전된 실리카 5 내지 15phr, 실리카 표면과 반응성인 실란잔기, 상기 조성성분들과 상호작용하는 하나 이상의실리카 커플링제 및 기타배합제로 구성되며, 이 기타배합제는 촉진제로써 노말 터트부틸 2 벤조디아질 설펜아마이드 1중량부와 가류제로써 황 2.2중량부와 스테아린산 2중량부 및 산화아연 3중량부, 노화방지제로써 노말 1,3디메티부틸 노말 페닐 파라핀 페닐렌디아민 1.5 중량부와 폴리2,2,4 트리메틸 1,2 디하이드로 퀴놀린 1중량부 및 왁시 하이드로 카본 1중량부로 구성된다.Here, the under-trad (8) is based on 100 parts by weight of the rubber cis 1,4-polyisoprene natural rubber 100 phr and carbon black 30 to 45 phr, precipitated silica 5 to 15 phr, silane residue reactive with the silica surface, the composition It consists of one or more silica coupling agents and other compounding agents which interact with the product, which contains 1 part by weight of normal tertbutyl 2 benzodiazyl sulfenamide as accelerator and 2.2 parts by weight of sulfur, 2 parts by weight of stearic acid and oxidation as a accelerator. It is composed of 3 parts by weight of zinc, 1.5 parts by weight of normal 1,3 dimethybutyl normal phenyl paraffin phenylenediamine, 1 part by weight of poly2,2,4 trimethyl 1,2 dihydro quinoline and 1 part by weight of waxy hydrocarbon. .

한편, 벨트에지커버(7)는 고무 100중량부를 기준으로 시스 1,4-폴리이소프렌 천연고무 100phr와 카본블랙 55 내지 65phr, 코발트 0.05 내지 0.15phr을 제공하는 적당량의 유기산 코발트염 및 기타배합제가 첨가되며, 상기 기타 배합제는 촉진제로써 노말 다이시클로헥실 2 벤조디아질 설펜마이드 1중량부와 가류제로써 황 7중량부및 산화아연 7중량부, 노화방지제로써 노말 1,3 디메티부틸 노말 페닐 파라핀 페닐렌디아민 1.5중량부와 폴리2,2,4 트리메틸 1,2 디하이드로 퀴놀린 1중량부및 왁시 하이드로 카본 1중량부가 사용된다.On the other hand, the belt edge cover (7) is based on 100 parts by weight of the rubber is added to the appropriate amount of organic acid cobalt salt and other compounding agents to provide 100 phr cis 1,4-polyisoprene natural rubber, 55 to 65 phr, carbon 0.05 to 0.15 phr The other compounding agent is 1 part by weight of normal dicyclohexyl 2 benzodiazyl sulfenamide as an accelerator, 7 parts by weight of sulfur as a vulcanizing agent and 7 parts by weight of zinc oxide, and normal 1,3 dimethybutyl normal phenyl paraffin as an antioxidant. 1.5 parts by weight of phenylenediamine, 1 part by weight of poly2,2,4 trimethyl 1,2 dihydro quinoline and 1 part by weight of waxy hydro carbon are used.

본 발명의 바람직한 실시예에 따르면 언더트래드(8)에 고무 100 중량부를 기준으로 디엔계 천연고무 100중량부와 카본블랙 40중량부(l2흡착 80~90mg/g, DBP 흡착이 95~105 cc/100g 이며 톨루엔 착색투과도는 40% 이상의 카본블랙), 침전 실리카 10중량부, 실리카 커플링제 2중량부, 노말터트부틸 2벤조디아질 설펜아마이드 1.2 중량부, 황 2.2중량부, 스테아린산 2중량부, 산화아연 3중량부, 노말 1,3 디메티부틸 노말 페닐 파라핀 페닐렌디아민 1.5 중량부, 폴리2,2,4 트리메틸 1,2 디하이드로 퀴놀린 1중량부, 왁시 하이드로 카본 1중량부, 스테아린산 1.5중량부, 산화아연 3중량부가 배합되어 조성되는 한편, 벨트에지커버(7)는 고무 100을 기준으로 시스 1,4-폴리이소프렌 천연고무 100phr, 카본블랙 60phr(l2흡착 80~90mg/g, DBP 흡착이 65~75cc/100g이며 톨루엔 착색투과도는 40% 이상의 카본블랙), 코발트 0.12phr을 제공하는 유기산 코발트염, 노말 다이시클로헥실 2 벤조디아질 설펜아마이드 1중량부, 가류제로써 황 7중량부와 산화아연 7중량부, 노화방지제로써 노말 1,3디메티부틸 노말 페닐 파라핀 페닐렌디아민 1.5중량부와 폴리 2,2,4 트리메틸 1,2 디하이드로 퀴놀린 1중량부 및 왁시 하이드로 카본 1중량부로 배합된다.According to a preferred embodiment of the present invention, 100 parts by weight of the diene-based natural rubber and 40 parts by weight of carbon black (l 2 adsorption 80-90 mg / g, DBP adsorption 95-105 cc based on 100 parts by weight of rubber to the undertread 8) / 100g and toluene color permeability of 40% or more carbon black), 10 parts by weight of precipitated silica, 2 parts by weight of silica coupling agent, 1.2 parts by weight of normal tertbutyl 2benzodiazyl sulfenamide, 2.2 parts by weight of sulfur, 2 parts by weight of stearic acid, 3 parts by weight of zinc oxide, 1.5 parts by weight of normal 1,3 dimethybutyl normal phenyl paraffin phenylenediamine, 1 part by weight of poly2,2,4 trimethyl 1,2 dihydroquinoline, 1 part by weight of waxy hydrocarbon, 1.5 parts by weight of stearic acid Part, 3 parts by weight of zinc oxide is formulated, while the belt edge cover (7) is based on rubber 100, cis 1,4-polyisoprene natural rubber 100phr, carbon black 60phr (l 2 adsorption 80 ~ 90mg / g, DBP Adsorption is 65 ~ 75cc / 100g and Toluene color permeability is over 40% Bone black), organic acid cobalt salt providing 0.12 phr of cobalt, 1 part by weight of normal dicyclohexyl 2 benzodiazyl sulfenamide, 7 parts by weight of sulfur as a vulcanizing agent and 7 parts by weight of zinc oxide, and 1,3 di as an antioxidant 1.5 parts by weight of methyl normal phenyl paraffin phenylenediamine, 1 part by weight of poly 2,2,4 trimethyl 1,2 dihydro quinoline and 1 part by weight of waxy hydrocarbon.

상기와 같은 배합에 의해 완성된 본 발명에 따른 타이어와 종래의 타이어를 시험링상에 취부시키고 타이어 측면상에 지정된 최대하중등급에 상응하는 공기압으로 팽창시키고, 상온에서 81km/hr의 속도로 100% 하중하에서 10시간 동안 주행하였을 때 타이어 숄더 내부의 온도를 측정한 결과를 이하의 표 1에 기재하였는바, 상기 표 1의 기존제품#1은 일반적인 언더트래드를 사용하고 벨트에지커버가 장착되지 않은 구조를 갖는 타이어이며, 기존제품#2는 일반적인 언더트래드를 사용하고 벨트에지커버가 장착된 구조를 갖는 타이어이다.The tire and the conventional tire according to the present invention completed by the above formulation are mounted on a test ring, inflated with the air pressure corresponding to the maximum load rating specified on the tire side, and 100% load at a speed of 81 km / hr at room temperature. The result of measuring the temperature inside the tire shoulder when driving for 10 hours in the following is shown in Table 1 below. Existing product # 1 of Table 1 uses a general under-trad and is not equipped with a belt edge cover. The existing product # 2 is a tire having a structure using a general under-trad and a belt edge cover.

기존제품#1Existing Product # 1 기존제품#2Existing Product # 2 본발명에 따른 제품Product according to the present invention 10시간 주행후의트래드 숄더 내부의 온도Temperature inside the tread shoulder after running for 10 hours 95°C95 ° C 85°C85 ° C 81°C81 ° C 백분율(%)percentage(%) 100100 9090 8585

상기 표 1의 실험결과에 의하면, 본 발명에 따른 조성성분을 갖는 언더트래드와 벨트에지커버를 갖는 타이어는 기존제품#1에 비해서 타이어 숄더 내부온도가 약 15% 정도, 기존제품#2에 비해서는 약 5% 정도 감소되는 효과가 나타났다.According to the experimental results of Table 1, the tire having an undertread and a belt edge cover having the composition according to the present invention has a tire shoulder internal temperature of about 15% compared to the existing product # 1, compared to the existing product # 2 The effect was reduced by about 5%.

이상 설명한 바와 같이 본 발명에 따르면, 대형 레디알 타이어의 언더트래드와 벨트에지커버가 본 발명에 따른 소정의 조성방법에 의해 배합됨으로써 트래드 부위의 내발열성이 향상되고 내구성이 향상되는 효과가 있다.As described above, according to the present invention, the underrad and the belt edge cover of a large radial tire are combined by a predetermined composition method according to the present invention, thereby improving heat resistance of the tread part and improving durability.

Claims (3)

723 내지 792 kpa의 팽창압력하에 1220kg 이상의 TRA(Tire Rim Association)평가 제한 하중치와 48cm 이상의 비드직경을 갖으며 언더트래드(8) 하부의 벨트층 끝단에서 벨트에지커버(7)가 장착된 구조를 갖는 공기입 타이어에 있어서,Under the expansion pressure of 723 to 792 kpa, it has a load limit of 1220 kg TRA (Tire Rim Association) evaluation limit and a bead diameter of 48 cm or more and the belt edge cover 7 is mounted at the end of the belt layer under the under tread 8. In the pneumatic tire having, 상기 언더트래드(8)가 고무 100 중량부를 기준으로 시스 1,4-폴리이소프렌 천연고무 100중량부와 카본블랙 30 내지 45중량부, 침전된 실리카 5내지 15중량부, 실리카 표면과 반응성인 실란잔기 및 상기 조성성분들과 상호 작용하는 하나 이상의 실리카 커플링제로 구성되고, 상기 벨트에지커버(7)는 고무 100 중량부를 기준으로 시스 1,4-폴리이소프렌 천연고무 100중량부와 카본블랙 55내지 65중량부 및 코발트 0.05 내지 0.15중량부를 제공하는 유기산 코발트염으로 구성되는 것을 특징으로하는 대형 레디알 타이어의 언더트레드와 벨트에지커버의 고무조성방법.The undertrade (8) is based on 100 parts by weight of rubber based on 100 parts by weight of cis 1,4-polyisoprene natural rubber and 30 to 45 parts by weight of carbon black, precipitated silica 5 to 15 parts by weight, silane residue reactive with silica surface And at least one silica coupling agent which interacts with the components, wherein the belt edge cover 7 is 100 parts by weight of cis 1,4-polyisoprene natural rubber and carbon black 55 to 65 based on 100 parts by weight of rubber. A method for forming rubber under belts and belt edge covers of large radial tires, characterized by consisting of organic acid cobalt salts which provide by weight and 0.05 to 0.15 parts by weight of cobalt. 제 1항에 있어서, 상기 실리카가 100내지 360의 BET 표면적 및 200 내지 400의 DBP흡수가를 갖는 것을 특징으로하는 대형 레디알 타이어의 언더트레드와 벨트에지커버의 고무조성방법.2. The method of claim 1, wherein the silica has a BET surface area of 100 to 360 and a DBP absorption of 200 to 400. 제 1항에 있어서, 상기 언더트래드에 사용되는 카본블랙이 l2흡착 80~90 mg/g, DBP 흡착이 65~75 cc/100g이며 톨루엔 착색투과도는 40% 이상인 것을 특징으로하는 대형 레디알 타이어의 언더트레드와 벨트에지커버의 고무조성방법.2. The large radial tire of claim 1, wherein the carbon black used in the underrad is l 2 adsorption 80-90 mg / g, DBP adsorption is 65-75 cc / 100 g and the toluene permeability is 40% or more. Rubber composition of under tread and belt edge cover.
KR1019970045909A 1997-09-05 1997-09-05 A radial tire KR100241627B1 (en)

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Publication number Priority date Publication date Assignee Title
KR100782983B1 (en) * 2006-10-27 2007-12-07 한국타이어 주식회사 Undertread rubber composition for bus/truck tire

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KR100445833B1 (en) * 2001-11-26 2004-08-30 한국타이어 주식회사 Radial Tire tread

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100782983B1 (en) * 2006-10-27 2007-12-07 한국타이어 주식회사 Undertread rubber composition for bus/truck tire

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