KR101001800B1 - Sidewall rubber composition for tire - Google Patents

Sidewall rubber composition for tire Download PDF

Info

Publication number
KR101001800B1
KR101001800B1 KR1020080098024A KR20080098024A KR101001800B1 KR 101001800 B1 KR101001800 B1 KR 101001800B1 KR 1020080098024 A KR1020080098024 A KR 1020080098024A KR 20080098024 A KR20080098024 A KR 20080098024A KR 101001800 B1 KR101001800 B1 KR 101001800B1
Authority
KR
South Korea
Prior art keywords
rubber composition
weight
parts
sidewall rubber
polyurethane foam
Prior art date
Application number
KR1020080098024A
Other languages
Korean (ko)
Other versions
KR20100038876A (en
Inventor
박형우
Original Assignee
금호타이어 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 금호타이어 주식회사 filed Critical 금호타이어 주식회사
Priority to KR1020080098024A priority Critical patent/KR101001800B1/en
Publication of KR20100038876A publication Critical patent/KR20100038876A/en
Application granted granted Critical
Publication of KR101001800B1 publication Critical patent/KR101001800B1/en

Links

Classifications

    • 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
    • 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
    • B60C1/0025—Compositions of the sidewalls
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation

Landscapes

  • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

본 발명은 타이어용 사이드월 고무 조성물에 관한 것으로서, 더욱 상세하게는 원료고무 100중량부에 대해서 보강충전제로서 DBP흡수율이 85~95ml/100g, 표면적이 30~40㎡/g인 카본블랙 40~65중량부와 연질의 분쇄된-폴리우레탄 발포체(pulverized-polyurethane foam)를 5~30중량부 포함하여 이루어진 것을 특징으로 하는, 내피로, 내오존 특성이 향상된 타이어용 사이드월 고무 조성물에 관한 것이다.The present invention relates to a sidewall rubber composition for tires, and more particularly, carbon black 40 to 65 having a DBP absorption of 85 to 95 ml / 100 g and a surface area of 30 to 40 m 2 / g as a reinforcing filler with respect to 100 parts by weight of raw rubber. It relates to a tire sidewall rubber composition having improved fatigue resistance, ozone resistance, characterized in that it comprises 5 to 30 parts by weight of the pulverized-polyurethane foam (weight) and soft pulverized-polyurethane foam.

Description

타이어용 사이드월 고무 조성물{SIDEWALL RUBBER COMPOSITION FOR TIRE}Sidewall rubber composition for tires {SIDEWALL RUBBER COMPOSITION FOR TIRE}

본 발명은 타이어용 사이드월 고무 조성물에 관한 것으로서, 더욱 상세하게는 연질의 분쇄된-폴리우레탄 발포체(pulverized-polyurethane foam)를 포함하여 이루어지므로써 내피로, 내오존 특성이 향상된 타이어용 사이드월 고무 조성물에 관한 것이다.The present invention relates to a sidewall rubber composition for a tire, and more particularly, to a sidewall rubber having improved fatigue resistance and ozone resistance by being made of a soft pulverized-polyurethane foam. It relates to a composition.

타이어의 사이드월 고무 조성물은 우수한 내피로 및 내오존 특성이 요구된다. 종래에는 상기와 같은 성능을 유지하기 위하여 내피로 노화 방지제, 내오존 크랙 방지제 등을 다량 함유하였다. 이와 같은 노화 방지제는 잠재적 인체 유해성으로 인하여 전 세계적으로 규제대상 물질 대상으로 언급되고 있으며, 그 함유량을 제한받고 있다. 대표적인 규제로는 유럽의 Nordic Eco Label이 있다. 이 Nordic Eco Label은 기존 제품보다 훨씬 적은 노화방지제 사용량으로 제한하고 있다. 따라서 노화방지제를 줄이면서 사이드월 고무의 성능을 유지 및 향상하여야 하는 기술이 요구되었다.The sidewall rubber composition of a tire requires excellent fatigue resistance and ozone resistance. Conventionally, in order to maintain the performance as described above, it contains a large amount of an anti-aging agent, an ozone crack prevention agent, and the like as the fatigue. Such anti-aging agents are mentioned worldwide as regulated substances due to their potential human hazards, and their content is limited. Representative regulation is Nordic Eco Label of Europe. The Nordic Eco Label limits the use of anti-aging agents to much less than conventional products. Therefore, there is a need for a technology that should maintain and improve the performance of the sidewall rubber while reducing the anti-aging agent.

본 발명의 목적은 상기와 같은 종래 기술의 문제점을 해결하기 위한 것으로서, 연질의 분쇄된-폴리우레탄 발포체를 포함하여 이루어지므로써 하는 내피로, 내오존 특성이 향상된 타이어용 사이드월 고무 조성물을 제공하는 것이다.An object of the present invention is to solve the problems of the prior art as described above, to be made by including a soft pulverized-polyurethane foam, to provide a sidewall rubber composition for tires with improved ozone resistance will be.

본 발명의 타이어용 사이드월 고무 조성물은 원료고무 100중량부에 대해서 보강충전제로서 DBP흡수율이 85~95ml/100g, 표면적이 30~40㎡/g인 카본블랙 40~65중량부와 연질의 분쇄된-폴리우레탄 발포체를 5~30중량부 포함하는 것을 특징으로 한다.The sidewall rubber composition for tires of the present invention is composed of 40 to 65 parts by weight of carbon black having a DBP absorption of 85 to 95 ml / 100 g and a surface area of 30 to 40 m 2 / g as a softening filler with respect to 100 parts by weight of raw rubber. It is characterized by comprising 5 to 30 parts by weight of polyurethane foam.

본 발명에서 사용되는 원료고무는, 그 종류에 특별히 제한이 없으며, 천연고무, 합성고무, 또는 천연고무와 합성고무를 혼합한 혼합고무로 이루어진 고무 중 어느 것이나 사용가능하며, 혼합고무의 경우 천연고무와 합성고무의 혼합비율에는 특별한 제한이 없다.The raw material rubber to be used in the present invention is not particularly limited in kind, and may be any one of natural rubber, synthetic rubber, or rubber made of mixed rubber mixed with natural rubber and synthetic rubber, and in the case of mixed rubber, natural rubber There is no particular limitation on the mixing ratio of and synthetic rubber.

본 발명에서 사용되는 카본블랙은 DBP흡수율이 85~95ml/100g이고, 표면적이 30~40㎡/g인 것이 바람직한데, DBP흡수율이 85ml/100g 미만인 경우에는 강도 증가로 인하여 피로특성이 하락하여 바람직하지 않고, 95ml/100g을 초과하는 경우에는 내오존 특성이 하락하여 바람직하지 않다. 또한, 표면적이 30㎡/g 미만인 경우에는 배합 분산성이 하락하여 바람직하지 않고, 40㎡/g을 초과하는 경우에는 내오존 특성이 하락하여 바람직하지 않다.The carbon black used in the present invention preferably has a DBP absorption of 85 to 95 ml / 100 g, and a surface area of 30 to 40 m 2 / g. However, when the DBP absorption is less than 85 ml / 100 g, fatigue properties are decreased due to an increase in strength. Otherwise, when exceeding 95ml / 100g, ozone resistance falls and is unpreferable. Moreover, when surface area is less than 30 m <2> / g, compounding dispersibility falls and it is unpreferable, and when it exceeds 40 m <2> / g, ozone resistance falls and it is not preferable.

또한, 상기 카본블랙은 원료고무 100중량부에 대하여 40~65중량부 사용되는 것이 바람직한데, 사용량이 40중량부 미만인 경우에는 인장강도가 하락하여 바람직하지 않고, 65중량부를 초과하는 경우에는 피로특성이 하락하여 바람직하지 않다.In addition, the carbon black is preferably used 40 to 65 parts by weight based on 100 parts by weight of the raw material rubber, when the amount is less than 40 parts by weight, the tensile strength is not preferable, the fatigue characteristics when exceeding 65 parts by weight It is undesirable to fall.

본 발명에서 사용되는 연질의 분쇄된-폴리우레탄 발포체는 연질 폴리우레탄 발포체를 그라인딩(grinding) 또는 세절파쇄의 방법으로 분쇄하여 제조되며, 분쇄된 입자의 평균크기는 1~3mm인 것이 바람직하다. 상기 입자의 평균크기가 1mm 미만인 경우에는 작업 중 분진을 일으켜 바람직하지 않고, 3mm를 초과하는 경우에는 발포체 자체의 셀(cell) 무너짐 현상이 일어나 바람직하지 않다.The soft pulverized-polyurethane foam used in the present invention is prepared by grinding the soft polyurethane foam by grinding or shredding, and the average size of the pulverized particles is preferably 1 to 3 mm. When the average size of the particles is less than 1mm, it is not preferable to cause dust during operation, and when the average size of the particles exceeds 3mm, the cell collapse of the foam itself is not preferable.

본 발명에서 사용되는 연질의 분쇄된-폴리우레탄 발포체는 원료고무 100중량부에 대해서 5~30중량부 사용되는 것이 바람직한데, 사용량이 5중량부 미만인 경우에는 첨가 효과가 미비하여 바람직하지 않고, 30중량부를 초과하는 경우에는 배합 분산성이 하락하고 강성이 증가하여 바람직하지 않다.The soft pulverized-polyurethane foam used in the present invention is preferably used 5 to 30 parts by weight based on 100 parts by weight of the raw material rubber, when the amount is less than 5 parts by weight, the addition effect is not preferable, 30 When it exceeds a weight part, compounding dispersibility falls and rigidity increases and it is unpreferable.

본 발명의 타이어용 사이드월 고무 조성물에는 일반적인 고무 조성물에 첨가되는 통상의 첨가제들, 예로서 산화아연, 연화제(공정오일 등), 지방산(스테아린산 등), 상용화제, 노화방지제, 접착제, 유황 및 가류촉진제 등을 배합할 수 있다.The sidewall rubber composition for tires of the present invention includes conventional additives, such as zinc oxide, softener (process oil, etc.), fatty acids (such as stearic acid), compatibilizers, anti-aging agents, adhesives, sulfur and vulcanizates added to general rubber compositions. An accelerator etc. can be mix | blended.

본 발명에 따른 사이드월 고무 조성물은 내피로 특성 및 내오존 특성이 우수하다.The sidewall rubber composition according to the present invention has excellent fatigue resistance and ozone resistance.

이하, 본 발명을 하기의 실시예 및 비교예에 의하여 보다 구체적으로 설명한 다. 하기의 실시예는 본 발명을 예시하기 위한 예에 지나지 않으며, 본 발명의 보호범위를 제한하는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following Examples and Comparative Examples. The following examples are merely examples for illustrating the present invention, and do not limit the protection scope of the present invention.

하기 표 1에 나타낸 시험고무 조성물의 배합사양에 따라 각 성분들을 밴버리 믹서에 넣고 배합하여 고무 조성물을 제조한 후, 이를 가류하여 고무 시편을 제조하고, ASTM 규격에 따라 점도, 경도, 300% 모듈러스, 인장강도, 신율을 측정하였고, 그 결과를 하기 표 2에 나타내었다.According to the compounding specifications of the test rubber composition shown in Table 1 to put each component in the Banbury mixer to prepare a rubber composition, and then vulcanize it to prepare a rubber specimen, according to ASTM standards, viscosity, hardness, 300% modulus, Tensile strength and elongation were measured, and the results are shown in Table 2 below.

(단위 : 중량부)                                                     (Unit: parts by weight) 항목Item 비교예Comparative example 실시예Example 천연고무Natural rubber 5050 5050 부타디엔고무Butadiene rubber 5050 5050 산화아연Zinc oxide 44 44 스테아린산Stearic acid 22 22 상용화제1) Compatibilizer 1) 77 77 공정오일Process oil 1One 1One 카본블랙2) Carbon black 2) 3030 4545 연질 분쇄된 폴리우레탄
발포체3) Soft crushed polyurethane
Foam 3) -- 1515 유황brimstone 1.41.4 1.41.4 가류촉진제4) Vulcanization accelerator 4) 0.50.5 0.50.5

주) week)

1) 상용화제 : 분산제(40MS)와 노화방지제(6PPD)의 1:1 혼합물1) Compatibilizer: 1: 1 mixture of dispersant (40MS) and anti-aging agent (6PPD)

2) 카본블랙 : DBP흡수율이 90ml/100g, 표면적이 35㎡/g인 카본블랙2) Carbon Black: Carbon Black with DBP Absorption of 90ml / 100g and Surface Area 35㎡ / g

3) 연질 분쇄된 폴리우레탄 발포체 : 평균 입자크기 3mm3) Soft Crushed Polyurethane Foam: Average Particle Size 3mm

4) 가류촉진제 : N-터셔리-부틸-2-벤조티아졸설펜아미드4) Vulcanization accelerator: N-tertiary-butyl-2-benzothiazolesulfenamide

항목Item 비교예Comparative example 실시예Example 점도(100℃)Viscosity (100 ° C) 6060 6363 경도(Shore A)Shore A 5555 5757 300％ 모듈러스(kg/㎠)300% modulus (kg / ㎠) 7575 8585 인장강도(kg/㎠)Tensile Strength (kg / ㎠) 210210 250250 신율(％)Elongation (%) 550550 530530 내피로(상대지수)My fatigue (relative index) 100100 127127 내오존(상대지수)Ozone (relative index) 100100 115115

상기 표 2의 결과로부터 알 수 있는 바와 같이, 본 발명에 따른 고무 조성물로 제조된 실시예 고무는 종래 고무 조성물로 제조된 비교예 고무와 비교시 동등 수준 이상의 인장물성 특성을 나타낼 뿐만 아니라, 내피로성 및 내오존성이 향상되었다.As can be seen from the results of Table 2, the example rubber prepared with the rubber composition according to the present invention not only exhibits tensile property properties equivalent to or higher than that of the comparative rubber prepared with the conventional rubber composition, and is fatigue resistant. And ozone resistance was improved.

Claims (3)

원료고무 100중량부에 대해서, DBP흡수율이 85~95ml/100g, 표면적이 30~40㎡/g인 카본블랙 40~65중량부와 연질의 분쇄된-폴리우레탄 발포체 5~30중량부를 포함하여 이루어지는 것을 특징으로 하는 타이어용 사이드월 고무 조성물.With respect to 100 parts by weight of the raw material rubber, DBP absorption rate comprises 85 to 95ml / 100g, 40 to 65 parts by weight of carbon black having a surface area of 30 to 40m 2 / g and 5 to 30 parts by weight of soft pulverized polyurethane foam A sidewall rubber composition for tires, characterized in that. 제 1항에 있어서, 상기 연질의 분쇄된-폴리우레탄 발포체의 평균 입자크기는 1~3mm인 것을 특징으로 하는 타이어용 사이드월 고무 조성물.2. The sidewall rubber composition for a tire according to claim 1, wherein the average particle size of the soft pulverized-polyurethane foam is 1 to 3 mm. 제 1항 또는 제 2항의 사이드월 고무 조성물로 이루어진 사이드월부를 갖는 타이어.A tire having sidewall portions made of the sidewall rubber composition of claim 1.
KR1020080098024A 2008-10-07 2008-10-07 Sidewall rubber composition for tire KR101001800B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080098024A KR101001800B1 (en) 2008-10-07 2008-10-07 Sidewall rubber composition for tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080098024A KR101001800B1 (en) 2008-10-07 2008-10-07 Sidewall rubber composition for tire

Publications (2)

Publication Number Publication Date
KR20100038876A KR20100038876A (en) 2010-04-15
KR101001800B1 true KR101001800B1 (en) 2010-12-15

Family

ID=42215527

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080098024A KR101001800B1 (en) 2008-10-07 2008-10-07 Sidewall rubber composition for tire

Country Status (1)

Country Link
KR (1) KR101001800B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101661156B1 (en) * 2015-04-02 2016-09-30 금호타이어 주식회사 Tire tread rubber composition having graphene foam and rubber complexes and tire comprising the Same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648748A (en) 1969-08-18 1972-03-14 Goodyear Tire & Rubber Tire having polyurethane laminate thereon
US4669517A (en) 1984-03-07 1987-06-02 The Goodyear Tire & Rubber Company Polyurethane bonded to cured rubber containing a diene polyol
KR100711089B1 (en) 2005-05-14 2007-04-24 주식회사 헵스켐 Method of manufacturing an urethane binder resin and Method of manufacturing an one-pack elsstic chip slurry

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648748A (en) 1969-08-18 1972-03-14 Goodyear Tire & Rubber Tire having polyurethane laminate thereon
US4669517A (en) 1984-03-07 1987-06-02 The Goodyear Tire & Rubber Company Polyurethane bonded to cured rubber containing a diene polyol
KR100711089B1 (en) 2005-05-14 2007-04-24 주식회사 헵스켐 Method of manufacturing an urethane binder resin and Method of manufacturing an one-pack elsstic chip slurry

Also Published As

Publication number Publication date
KR20100038876A (en) 2010-04-15

Similar Documents

Publication Publication Date Title
Arayapranee et al. Application of rice husk ash as fillers in the natural rubber industry
EP2914635B1 (en) Methods of functionalizing reclaimed elastomer material and compositions comprising the same
JP5475579B2 (en) Rubber composition for tire and pneumatic tire
JP6379558B2 (en) Method for producing rubber composition for tire
WO2014124441A1 (en) Elastomeric compositions comprising reclaimed elastomer material
US9683088B2 (en) Process for regenerating sulfur-crosslinked rubber vulcanizates to give regenerates
KR101278216B1 (en) Eco-friendly tire rubber composition having improved abrasion-resistant property
JP5552730B2 (en) Rubber composition for undertread
Moresco et al. Natural rubber compositions with the partial/total replacement of carbon black/naphthenic oil by renewable additives: Rice husk ash and cashew nut oil
Chuayjuljit et al. Using silica from rice husk as a reinforcing filler in natural rubber
WO2022091953A1 (en) Method for producing rubber composition, fumed silica for rubber composition, and rubber composition
KR101001800B1 (en) Sidewall rubber composition for tire
WO2015129669A1 (en) Finely pulverized petroleum coke, fired finely pulverized petroleum coke, filler for rubber composition, and rubber composition
KR100965992B1 (en) Bead filler rubber composition for tire
JP2006321827A (en) Rubber composition and pneumatic tire
CN105542240A (en) Shoulder-wedge rubber composition containing aramid short fiber and preparation method thereof
JP2016124921A (en) Rubber compound
Iluppalla et al. Silica/white rice husk ash hybrid filler for rubber composites for the manufacture of low speed castor wheel rubber treads
KR100943816B1 (en) A sidewall rubber composition for tire
KR100705785B1 (en) Tire tread composition
JP2016124922A (en) Rubber compound
KR20160069214A (en) Tire Rubber Composition Having Improved Low-Fuel Property
KR100753865B1 (en) Rubber composition for tire tread
JP2016124919A (en) Rubber compound
JP2016141773A (en) Rubber compound

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
FPAY Annual fee payment

Payment date: 20131203

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee