KR20020027031A - PEN cord applied pnumetric tire - Google Patents

PEN cord applied pnumetric tire Download PDF

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Publication number
KR20020027031A
KR20020027031A KR1020000058196A KR20000058196A KR20020027031A KR 20020027031 A KR20020027031 A KR 20020027031A KR 1020000058196 A KR1020000058196 A KR 1020000058196A KR 20000058196 A KR20000058196 A KR 20000058196A KR 20020027031 A KR20020027031 A KR 20020027031A
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KR
South Korea
Prior art keywords
tire
pen
pet
stability
pneumatic tire
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Application number
KR1020000058196A
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Korean (ko)
Inventor
권희원
Original Assignee
신형인
금호산업 주식회사
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Application filed by 신형인, 금호산업 주식회사 filed Critical 신형인
Priority to KR1020000058196A priority Critical patent/KR20020027031A/en
Publication of KR20020027031A publication Critical patent/KR20020027031A/en

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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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/02—Carcasses
    • B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0042—Reinforcements made of synthetic materials
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/02—Carcasses
    • B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
    • B60C2009/0475—Particular materials of the carcass cords

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: A pneumatic tire applying PEN to carcass play is provided to improve the high speed driving stability and the high durability of the pneumatic tire, thereby preventing the safety accidents of vehicles. CONSTITUTION: A pneumatic tire, in which PEN(polyethylene naphthalene-2,6-dicarboxylate) cords having a high thermal stability and structural stability in comparison with PET(polyethylene terephthalate) cords, are applied for a carcass ply.

Description

카카스 플라이에 ＰＥＮ 코드가 적용된 공기입 타이어{PEN cord applied pnumetric tire}PEN cord applied pnumetric tire to carcass ply

본 발명은 카카스 플라이에 구조안정성 및 열안정성이 우수한 PEN 코드를 적용하므로써 내구성을 향상시킨 공기입 타이어에 관한 것이다.The present invention relates to a pneumatic tire having improved durability by applying a PEN code having excellent structural stability and thermal stability to a carcass ply.

최근에 승용차의 고급화에 따라 고속주행을 하면서 타이어도 고속주행안정성 및 고내구성능이 매우 주요하게 대두되고 있으며, 특히 레이싱타이어와 같은 초저 편평비를 가지는 타이어에서는 고속주행안정성 및 고내구성이 더욱 중요시 되고 있으며, 이러한 성능들을 만족시키기 위해서 카카스 플라이 재료로서 폴리에틸렌 테레프탈레이트(PET) 코드 또는 레이온 코드를 적용하는 경우가 많아지고 있다.In recent years, high-speed driving stability and high durability of tires have emerged as high-speed driving due to the high quality of passenger cars.In particular, high-speed driving stability and high durability have become more important in tires having very low flat ratios such as racing tires. In order to satisfy these performances, polyethylene terephthalate (PET) cord or rayon cord is often applied as a carcass ply material.

타이어 산업의 초창기에는 타이어 보강재로서 면(cotton)이 일반적으로 사용되었으나 1920년대에는 합성 셀룰로오스 섬유인 레이온이 대신 사용되기 시작하였고, 2차 세계대전 이후로는 완전히 레이온으로 대체되었다. 유럽에서는 아직도 레이온이 승용차용 타이어 보강재로 주로 사용되고 있으나 기타 지역의 경우 PET가 주로 사용되고 있다. 현재는 레이온 생산시 발생하는 환경문제로 인해 레이온을 대체하기 위한 많은 연구가 진행되고 있으며, 이를 위해 레이온과 유사한 구조안정성을 갖는 많은 PET 코드들이 개발되었다. 그러나 일부 초고속 주행용 타이어의 경우에는 고속주행시 발생하는 열에 의해 PET 코드가 견뎌내지 못하므로 열안정성이 우수한 레이온 코드를 적용하고 있다. 그러나 레이온의 경우 열안정성은 우수하지만 PET에 비해 강력성이 떨어지며 원재료 생산시 공정상의 문제로 인하여 환경문제에 심각한 해를 끼친다.In the early days of the tire industry, cotton was commonly used as a tire reinforcement, but in the 1920s, synthetic cellulose fibers, rayon, began to be used instead, and after World War II they were completely replaced by rayon. In Europe, rayon is still mainly used as a tire reinforcement for passenger cars, but PET is mainly used in other regions. Currently, a lot of researches are being conducted to replace rayon due to environmental problems in rayon production. To this end, many PET cords with structural stability similar to rayon have been developed. However, some high speed tires do not withstand the PET cord due to the heat generated during high-speed driving, so the rayon cord having excellent thermal stability is applied. However, rayon has excellent thermal stability but is less powerful than PET, and causes serious damage to environmental problems due to process problems in raw material production.

본 발명의 목적은 타이어의 카카스 플라이에 구조안정성 및 열안정성이 우수한 PEN 코드를 적용하므로써 내구성능을 향상시킨 공기입 타이어를 제공하는 것이다.It is an object of the present invention to provide a pneumatic tire having improved durability by applying a PEN code having excellent structural and thermal stability to a carcass ply of a tire.

본 발명은 고속주행용 승용차 타이어에 사용되는 카카스 재료인 플라이에 PET에 비해 동일한 강력을 유지하면서도 구조안정성 및 열안정성이 우수한 PEN 코드를 적용하여 내구성능을 향상시킴을 특징으로 한 것이다.The present invention is characterized by improving the durability performance by applying a PEN code excellent in structural stability and thermal stability while maintaining the same strength compared to PET to the carcass material used for high-speed driving car tires.

PET 코드와 PEN(poly(ethylene 2,6-naphthallene dicarboxylate)) 코드의 구조는 다음과 같다.The structure of PET and PEN (poly (ethylene 2,6-naphthallene dicarboxylate)) codes is as follows.

<PET 코드><PET code>

<PEN 코드><PEN code>

(상기 구조식들에서 n은 반복단위수)Where n is the number of repeating units

PEN 코드가 기존 PET 코드에 비하여 열안정성이 우수하고(표 1 참조), 분자배향성이 우수함에 따라 수축율이 적으므로 구조안정성이 우수하다(표 2 참조).The PEN code has better thermal stability than the existing PET code (see Table 1), and has excellent structural stability because of its small shrinkage rate due to its excellent molecular orientation (see Table 2).

항목Item PETPET PENPEN 유리전이온도(℃)Glass transition temperature (℃) 78℃78 ℃ 120℃120 ℃ 녹는 온도(℃)Melting temperature (℃) 256℃256 ℃ 273℃273 ℃

승용차용 타이어의 경우 고속주행시 타이어 내부온도가 크게 올라가게 되어, 코드가 열에 안정하지 않을 경우 물성하락 및 융해에 의해 타이어 사고로 이어질 수 있으므로, 이와 같은 열안정성 특성은 매우 중요하다.In the case of a tire for a passenger car, the internal temperature of the tire is greatly increased during high-speed driving, and if the cord is not stable to heat, it may lead to a tire accident due to physical property drop and melting, and thus such thermal stability characteristics are very important.

구분division 개선전(PET 적용)Before Improvement (PET) 개선후(PEN 적용)After improvement (PEN applied) 수축율(%)160℃, 15MINShrinkage (%) 160 ℃, 15MIN 7.0%7.0% 4.0%4.0%

이와 같이 구조안정성이 우수한 특성은 고속주행안정성을 향상시킬 수 있으며 특히 코너링 성능을 향상시키는데 유리한 성능이다.Such excellent structural stability can improve high-speed driving stability, and is particularly advantageous for improving cornering performance.

실시예 1Example 1

1500D/2P 구조로 동일한 구조를 가진 PET 코드와 PEN 코드를 카카스 플라이에 적용한 타이어 내구성능은 다음과 같다.The tire durability performance applying the PET cord and PEN cord to the carcass ply with 1500D / 2P structure is as follows.

평가규격 : 225/45R 15Evaluation standard: 225 / 45R 15

시험종류Test Type 개선전(PET 적용)Before Improvement (PET) 개선후(PEN 적용)After improvement (PEN applied) 코드배열밀도(END PER INCH)Code Array Density (END PER INCH) 3030 3030 고속주행 평가 ECER30High Speed Driving Evaluation ECER30 1시간 50분1 hour 50 minutes 2시간 10분2 hours 10 minutes ECER30 : 타이어의 속도 내구성능평가 일반시험임ECER30: General test for speed durability performance evaluation of tires

이상에서 설명된 바와 같이, 본 발명의 타이어는 카카스 플라이에 구조안정성 및 열안정성이 우수한 PEN 코드를 적용하므로써 내구성이 향상된 특성을 갖는다.As described above, the tire of the present invention has improved durability by applying a PEN code having excellent structural and thermal stability to the carcass ply.

Claims (1)

타이어의 카카스 플라이로서 PEN 코드를 적용한 것을 특징으로 하는 공기입 타이어.A pneumatic tire comprising a PEN code applied as a carcass ply of a tire.
KR1020000058196A 2000-10-04 2000-10-04 PEN cord applied pnumetric tire KR20020027031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000058196A KR20020027031A (en) 2000-10-04 2000-10-04 PEN cord applied pnumetric tire

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KR1020000058196A KR20020027031A (en) 2000-10-04 2000-10-04 PEN cord applied pnumetric tire

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05139111A (en) * 1991-11-20 1993-06-08 Yokohama Rubber Co Ltd:The Pneumatic radial tire
JPH0840009A (en) * 1994-07-26 1996-02-13 Toyo Tire & Rubber Co Ltd Pneumatic radial tire
JP2000185508A (en) * 1998-12-22 2000-07-04 Bridgestone Corp Pneumatic radial tire for passenger car
JP2000211318A (en) * 1999-01-21 2000-08-02 Bridgestone Corp Pneumatic tire for motorcycle
KR20010064894A (en) * 1999-12-20 2001-07-11 조충환 Carcass ply for radial tire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05139111A (en) * 1991-11-20 1993-06-08 Yokohama Rubber Co Ltd:The Pneumatic radial tire
JPH0840009A (en) * 1994-07-26 1996-02-13 Toyo Tire & Rubber Co Ltd Pneumatic radial tire
JP2000185508A (en) * 1998-12-22 2000-07-04 Bridgestone Corp Pneumatic radial tire for passenger car
JP2000211318A (en) * 1999-01-21 2000-08-02 Bridgestone Corp Pneumatic tire for motorcycle
KR20010064894A (en) * 1999-12-20 2001-07-11 조충환 Carcass ply for radial tire

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