KR20020089995A - Rubber composition for support ring of support ring type run flat tire - Google Patents

Rubber composition for support ring of support ring type run flat tire Download PDF

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KR20020089995A
KR20020089995A KR1020010029109A KR20010029109A KR20020089995A KR 20020089995 A KR20020089995 A KR 20020089995A KR 1020010029109 A KR1020010029109 A KR 1020010029109A KR 20010029109 A KR20010029109 A KR 20010029109A KR 20020089995 A KR20020089995 A KR 20020089995A
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South Korea
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support ring
phr
rubber composition
rubber
tire
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KR1020010029109A
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Korean (ko)
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조선이
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금호산업 주식회사
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Priority to KR1020010029109A priority Critical patent/KR20020089995A/en
Publication of KR20020089995A publication Critical patent/KR20020089995A/en

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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • 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
    • B60C2001/0033—Compositions of the sidewall inserts, e.g. for runflat
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: Provided is a support ring rubber composition of a support ring type run-flat tire, which has high acid-resistance, heat-resistance, ozone-resistance, and hardness and is good for injection molding. CONSTITUTION: The support ring rubber composition contains 100phr of a raw rubber, 50-350phr of clay, 50-350phr of light calcium carbonate, 4-6phr of zinc oxide, 55-70phr of paraffin oil, 0.5-2.0phr of stearic acid, 6-9phr of titanium oxide, 1-2phr of polyethylene glycol, and 0.32-1.83phr of TMTD, wherein the raw rubber is EPDM rubber containing 65-75wt% of ethylene and 5-6wt% of diene.

Description

서포트링 타입 런플랫 타이어의 서포트링 고무조성물{Rubber composition for support ring of support ring type run flat tire}Rubber composition for support ring of run ring tires {Rubber composition for support ring of support ring type run flat tire}

본 발명은 서포트링 타입 런플랫 타이어의 서포트링 고무조성물에 관한 것이다.The present invention relates to a support ring rubber composition of a support ring type run flat tire.

현재 펑크나 불의의 사고로 인해 자동차 타이어의 이상이 생기는 경우 일반적으로 차량에 비상용으로 보관하고 있는 스페어 타이어를 꺼내어 교체하거나 또는 혼자의 힘으로 이를 해결할 수 없는 경우 가까이에 있는 자동차 정비소에 연락해서 타이어나 기타 자동차의 이상부위를 수리하고 있다.If a car tire is abnormal due to a puncture or inadvertent accident, the spare tire that is usually stored in the vehicle for emergency is removed and replaced, or if it is not possible to solve it by yourself, contact your nearest auto repair shop for assistance. Repairing other parts of the car.

그러나 이러한 상황은 차량이 저속으로 운전하면서 운전자가 타이어의 이상을 빨리 감지하여 차량의 정지가 용이한 경우에 해당되며, 고속으로 운전하거나 혹은 고하중의 차량인 경우 타이어가 펑크나거나 이상이 생기는 경우에는 차량의 정지가 용이하지 않아 불가피하게 사고가 발생하는데 심하면 사람의 생명까지 잃을 수 있는 사고가 발생한다.However, this situation is when the driver detects an abnormal tire quickly while the vehicle is driving at a low speed, and the vehicle is easily stopped.In the case of driving at high speed or a heavy load vehicle, the tire is flat or abnormal. As the vehicle is not easy to stop, accidents inevitably occur, and in some cases, accidents that can cause loss of human life occur.

차량 및 도로의 발달로 인해 고속주행을 하는 차량과 고하중을 유지하는 차량이 점점 증가하는 실정에서 고속주행을 하고 있거나 또는 고하중을 유지하고 있는 차량의 타이어가 펑크가 나면 필수적으로 대형사고가 발생하게 된다.Due to the development of vehicles and roads, there is an increasing number of vehicles that drive at high speeds and vehicles that maintain high loads, and when a tire of a vehicle driving at high speeds or having a heavy load is punctured, a major accident occurs. Done.

최근 이에 대비하여 타이어의 펑크가 발생하더라도 차량의 하중을 그대로 지지하여 일정거리를 안전하게 주행할 수 있게 함으로서 차량의 정지를 용이하게 하여주는 타이어에 대한 개발이 진행되고 있다. 현재 본 출원인인 금호산업 주식회사의 타이어 사업부에서 타이어 펑크시 일정거리를 안전하게 유지할 수 있는 타이어에 있어서 타이어의 사이드월의 두께를 보강한 런플랫 타이어를 개발하여 상용화시키고 있다.Recently, even in the event of a puncture of the tire, the development of a tire that facilitates the stopping of the vehicle by supporting the load of the vehicle as it is to drive a certain distance safely has been in progress. Currently, the tire division of the present applicant, Kumho Industrial Co., Ltd. has developed and commercialized a run flat tire with reinforced sidewall thickness of a tire in a tire capable of safely maintaining a certain distance during tire puncture.

런플랫 타이어에서 서포트링은 일반 공기압 타이어의 휠에 원주방향으로 장착이 되어 있다가 펑크나 갑작스런 사고시에 휠과 공기압 타이어의 트레드 안쪽면 사이에서 하중지지의 작용을 하는 기능성 링타이어이다. 때문에 서포트링은 중량이 가능한 낮고, 고경도를 가지며, 열노화 특성에도 강해야 하며 제조시 사출성도 좋아야 한다.In run-flat tires, the support ring is circumferentially mounted on the wheel of a general pneumatic tire, and is a functional ring tire that acts as a load support between the wheel and the tread inner surface of the pneumatic tire during a puncture or sudden accident. For this reason, the support ring should be as low as possible, have high hardness, be strong against thermal aging characteristics, and have good injection properties during manufacturing.

일반적으로 서포트링은 정상적인 타이어 주행시에는 타이어 안쪽의 림(Rim)바 면에 장착되어 있다가 타이어가 펑크가 나면 그모양 그대로 유지하여 일시적으로 타이어가 하던 차량을 지지해주는 역할을 대신해 준다. 서포트링은 현재 그 개발 및 구조의 형태가 다양하나 높이가 림 외부면에서 트레드 안쪽까지 높이의 약 50% 정도 구조를 하고 있다.In general, the support ring is mounted on the rim bar surface inside the tire during normal tire driving, and when the tire is punctured, it retains its shape so that the tire temporarily supports the vehicle. The support ring is currently in various forms of development and structure, but its height is about 50% of the height from the outside of the rim to the inside of the tread.

현재 서포트링 타입 런플랫 타이어의 서포트링 고무조성물은 원료고무로 폴리우레탄, 천연고무, 합성고무를 각각 사용하거나 또는 혼용하여 사용하고 있다.Currently, the support ring rubber composition of the support ring type run flat tire is made of polyurethane, natural rubber, or synthetic rubber, respectively, or used in combination.

본 발명은 내산성, 내열성 및 내오존성이 높으며, 사출성형시에도 유리하고, 다량의 충진제 사용이 가능하여 높은 경도를 낼 수 있으며, 경질탄산칼슘을 적용하여 중량을 낮출 수 있는 EPDM 고무를 원료고무를 사용하고 충진제, 경질탄산칼슘, 산화티타늄을 포함한 서포트링 타입 런플랫 타이어의 서포트링 고무조성물의 제공을 목적으로 한다.The present invention has high acid resistance, heat resistance and ozone resistance, and is advantageous even in injection molding, and can use a large amount of fillers to produce high hardness, and apply EPDM rubber which can lower weight by applying hard calcium carbonate as raw material rubber. It is intended to provide a support ring rubber composition of a support ring type run flat tire which includes fillers, hard calcium carbonate and titanium oxide.

본 발명의 서포트링 타입 런플랫 타이어의 서포트링 고무조성물은 공지의 서포트링 고무조성물에 있어서, 원료고무 100 phr에 대하여 충진제 50∼350 phr, 경질탄산칼슘 50∼350 phr, 산화아연 4∼6 phr, 파라핀 오일(Paraffine oil) 55∼70 phr, 스테아린산 0.5∼2.0 phr, 산화티타늄 6∼9 phr, 폴리에틸렌글리콜(PEG) 1∼2 phr, TMTD(Tetramethythiuram disulfide) 0.32∼1.83 phr 포함하는 것을 특징으로 한다.The support ring rubber composition of the support ring type run flat tire of the present invention is a known support ring rubber composition, wherein the filler is 50 to 350 phr, hard calcium carbonate 50 to 350 phr, and zinc oxide 4 to 6 phr based on 100 phr of the raw rubber. , Paraffin oil 55-70 phr, stearic acid 0.5-2.0 phr, titanium oxide 6-9 phr, polyethylene glycol (PEG) 1-2 phr, TMTD (Tetramethythiuram disulfide) 0.32-1.83 phr .

본 발명에서의 원료고무는 에틸렌 함량 65∼75 중량%, 디엔성분 함량 5∼6 중량% 포함하는 EPDM 고무를 사용하는데 원료고무로 사용하는 EPDM 고무에 있어서 에틸렌 함량은 65∼75 중량%를 유지하는 것이 고충진 고경도에 유리하고, 디엔 성분 함량은 5∼6 중량%를 유지시 가류에 최적의 효과를 나타낸다.The raw material rubber in the present invention uses EPDM rubber containing 65 to 75% by weight of ethylene and 5 to 6% by weight of diene component, but in the EPDM rubber used as raw material rubber, the ethylene content is maintained at 65 to 75% by weight. It is advantageous for high filling and high hardness, and the diene component content shows an optimum effect on vulcanization when maintaining 5 to 6% by weight.

한편, 충진제는 클레이를 사용하여 런플랫 타이어의 서포트링 고무에 있어서고경도 특성을 갖도록 한다.On the other hand, the filler is to use a clay to have a high hardness characteristics in the support ring rubber of the run flat tire.

경질탄산칼슘은 런플랫 타이어의 서포트링 고무조성물의 원료고무로 사용하는 EPDM 고무의 중량을 낮추는 역할을 한다.Hard calcium carbonate serves to lower the weight of EPDM rubber used as the raw material rubber of the support ring rubber composition of run flat tires.

산화티타늄은 본 발명의 런플랫 타이어의 서포트링 고무조성물에서 충진제 및 착색제의 역할을 하며 다양한 사용량으로 고무조성물에 첨가하여 고무시편을 제조한후 물성측정을 한 결과 산화티타늄을 6∼9 phr를 사용시 가장 좋은 물성의 서포트링 고무시편을 얻을 수 있었다.Titanium oxide plays a role of filler and colorant in the support ring rubber composition of the run-flat tire of the present invention, and after adding rubber composition to the rubber composition in various amounts to prepare rubber specimens, it is used to measure titanium oxide 6-9 phr. The support ring rubber specimens with the best physical properties were obtained.

폴리에틸렌글리콜(PEG) 역시 분자량이 3500∼4500인 원료고무 100 phr에 대하여 1∼2 phr를 서포트링 고무조성물에 사용시 가장 좋은 물성의 서포트링 고무시편을 얻을 수 있어 폴리에틸렌글리콜은 상기 수치의 분자량 및 첨가량을 사용하는 것이 좋다.Polyethylene glycol (PEG) also provides the best physical support ring rubber specimens when 1 to 2 phr is used for the support ring rubber composition for 100 phr of raw rubber having a molecular weight of 3500 to 4500. It is good to use

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

<실시예 1><Example 1>

원료고무로 에틸렌 함량이 69 중량%, 디엔 성분으로 ENB(Ethylene Norbonene) 함량이 6 중량% 함유하는 EPDM 고무 100 phr에 대하여 충진제로 클레이 153 phr, 경질탄산칼슘 153 phr, 파라핀 오일 67 phr, 아연화 5 phr, 스테아린산 1 phr, 산화티타튬 7 phr, 분자량이 4000인 폴리에틸렌글리콜 1.7 phr, TMTD 0.33phr을 첨가한 후 공지의 방법을 이용하여 런플랫 타이어의 서포트링 고무시편을 제조하였다.For 100 phr EPDM rubber containing 69 wt% ethylene as raw material rubber and 6 wt% ENB (Ethylene Norbonene) as diene, clay 153 phr as filler, hard calcium carbonate 153 phr, paraffin oil 67 phr, galvanized 5 After adding phr, 1 phr of stearic acid, 7 phr of titanium oxide, 1.7 phr of polyethylene glycol having a molecular weight of 4000, and 0.33 phr of TMTD, a support ring rubber sample of a runflat tire was manufactured by a known method.

<실시예 2><Example 2>

원료고무로 에틸렌 함량이 69 중량%, 디엔 성분으로 ENB 함량이 6 중량% 및 파라핀 오일 50 phr을 함유하는 EPDM 고무 100 phr에 대하여 충진제로 클레이 153 phr, 경질탄산칼슘 153 phr, 파라핀 오일 17 phr, 아연화 5 phr, 스테아린산 1 phr, 산화티타튬 7 phr, 분자량이 4000인 폴리에틸렌글리콜 1.7 phr, TMTD 0.33 phr을 첨가한 후 공지의 방법을 이용하여 런플랫 타이어의 서포트링 고무시편을 제조하였다.Clay 153 phr as filler, 153 phr hard calcium carbonate, paraffin oil 17 phr for 100 phr EPDM rubber containing 69 wt% ethylene as raw material rubber, 6 wt% ENB as diene and 50 phr paraffin oil. After adding 5 phr of zinc, 1 phr of stearic acid, 7 phr of titanium oxide, 1.7 phr of polyethylene glycol having a molecular weight of 4000, and 0.33 phr of TMTD, a support ring rubber specimen of a runflat tire was manufactured by a known method.

표 1. 실시예의 고무조성물Table 1. Rubber Compositions of Examples

항목Item 실시예 1Example 1 실시예 2Example 2 원료고무Raw material rubber 100100 100100 클레이Clay 153153 153153 경질탄산칼슘Hard calcium carbonate 153153 153153 파라핀 오일Paraffin oil 6767 1717 아연화Zincification 55 55 스테아린산Stearic acid 1One 1One 산화티타늄Titanium oxide 77 77 폴리에틸렌글리콜Polyethylene glycol 1.71.7 1.71.7 TMTDTMTD 0.330.33 0.330.33

<시험예><Test Example>

상기 실시예 1,2의 방법을 이용하여 제조한 런플랫 타이어의 서포트링 고무시편과 대조군으로 폴리우레탄 재질의 서포트링 고무시편을 ASTM 관련 규정에 의하여 인장특성에 대한 물성을 측정한 후 그 결과를 아래의 표 2에 정리하여 나타내었다.The support ring rubber specimens of the run-flat tires manufactured using the method of Examples 1 and 2 and the control ring rubber specimens made of polyurethane were measured as properties of tensile properties according to ASTM-related regulations. It is shown collectively in Table 2 below.

표 2. 실시예 고무시편의 물성시험 결과Table 2. Property test results of rubber specimens

항목Item 실시예 1Example 1 실시예 2Example 2 대조군Control 인장특성Tensile Properties 경도Hardness 7272 7373 7373 300% 모듈러스300% modulus 2727 2626 5555 인장강도The tensile strength 5959 6060 250250 신장율(%)Elongation (%) 629629 640640 700700

본 발명은 내산성, 내열성 및 내오존성이 높으며, 사출성형시에도 유리하고, 다량의 충진제 사용이 가능하여 높은 경도를 낼 수 있으며, 경질탄산칼슘을 적용하여 중량을 낮출 수 있는 EPDM 고무를 원료고무로 사용한 서포트링 타입 런플랫 타이어의 서포트링 고무조성물의 제공할 수 있다.The present invention has high acid resistance, heat resistance and ozone resistance, and is advantageous even in injection molding, and can use a large amount of filler to produce high hardness, and apply EPDM rubber which can lower weight by applying hard calcium carbonate as raw material rubber. The support ring rubber composition of the used support ring type run flat tire can be provided.

Claims (3)

공지의 서포트링 고무조성물에 있어서, 원료고무 100 phr에 대하여 클레이 50∼350 phr, 경질탄산칼슘 50∼350 phr, 산화아연 4∼6 phr, 파라핀 오일 55∼70 phr, 스테아린산 0.5∼2.0 phr, 산화티타늄 6∼9 phr, 폴리에틸렌글리콜 1∼2 phr, TMTD 0.32∼1.83 phr 포함하는 것을 특징으로 하는 서포트링 타입 런플랫 타이어의 서포트링 고무조성물In known support ring rubber compositions, 50 to 350 phr of clay, 50 to 350 phr of hard calcium carbonate, 4 to 6 phr of zinc oxide, 55 to 70 phr of paraffin oil, 0.5 to 2.0 phr of stearic acid, oxidation A support ring rubber composition of a support ring type run flat tire comprising 6 to 9 phr of titanium, 1 to 2 phr of polyethylene glycol, and 0.32 to 1.83 phr of TMTD. 제 1 항에 있어서, 원료고무는 에틸렌 함량 65∼75 중량%, 디엔성분 함량 5∼6 중량% 포함하는 EPDM 고무인 것을 특징으로 하는 서포트링 타입 런플랫 타이어의 서포트링 고무조성물2. The support ring rubber composition according to claim 1, wherein the raw material rubber is EPDM rubber containing 65 to 75 wt% ethylene content and 5 to 6 wt% diene component content. 제 1 항에 있어서, 폴리에틸렌글리코는 분자량이 3500∼4500 임을 특징으로 하는 서포트링 타입 런플랫 타이어의 서포트링 고무조성물The support ring rubber composition according to claim 1, wherein the polyethyleneglyco has a molecular weight of 3500 to 4500.
KR1020010029109A 2001-05-25 2001-05-25 Rubber composition for support ring of support ring type run flat tire KR20020089995A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100771684B1 (en) 2006-06-19 2007-10-31 금호타이어 주식회사 Tire sidewall rubber composition
KR100923118B1 (en) * 2008-03-25 2009-10-22 김종문 The Manufactural method of Surface activity zinc composite with the three-layer structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR890006418A (en) * 1987-10-22 1989-06-13 에이. 제이. 크라코워 Tires with tread compositions containing improved processing aids
US5626696A (en) * 1994-04-27 1997-05-06 Hutchinson Device for running on a flat tire for a motor vehicle
KR19990080126A (en) * 1998-04-13 1999-11-05 신형인 Highly Filled Rubber Composition Using EPDM
KR19990081389A (en) * 1998-04-29 1999-11-15 신형인 Side rubber composition for tires with excellent fracture resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR890006418A (en) * 1987-10-22 1989-06-13 에이. 제이. 크라코워 Tires with tread compositions containing improved processing aids
US5626696A (en) * 1994-04-27 1997-05-06 Hutchinson Device for running on a flat tire for a motor vehicle
KR19990080126A (en) * 1998-04-13 1999-11-05 신형인 Highly Filled Rubber Composition Using EPDM
KR19990081389A (en) * 1998-04-29 1999-11-15 신형인 Side rubber composition for tires with excellent fracture resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100771684B1 (en) 2006-06-19 2007-10-31 금호타이어 주식회사 Tire sidewall rubber composition
KR100923118B1 (en) * 2008-03-25 2009-10-22 김종문 The Manufactural method of Surface activity zinc composite with the three-layer structure

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