KR100264428B1 - Steel cord applied aramid fiber cord - Google Patents

Steel cord applied aramid fiber cord Download PDF

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Publication number
KR100264428B1
KR100264428B1 KR1019980000578A KR19980000578A KR100264428B1 KR 100264428 B1 KR100264428 B1 KR 100264428B1 KR 1019980000578 A KR1019980000578 A KR 1019980000578A KR 19980000578 A KR19980000578 A KR 19980000578A KR 100264428 B1 KR100264428 B1 KR 100264428B1
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South Korea
Prior art keywords
cord
steel
aramid fiber
strength
steel cord
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KR1019980000578A
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Korean (ko)
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KR19990065334A (en
Inventor
임동민
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신형인
금호산업 주식회사
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Priority to KR1019980000578A priority Critical patent/KR100264428B1/en
Publication of KR19990065334A publication Critical patent/KR19990065334A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D02G3/047—Blended or other yarns or threads containing components made from different materials including aramid fibres
    • 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
    • B60C9/005—Reinforcements made of different materials, e.g. hybrid or composite cords
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/12—Threads containing metallic filaments or strips
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire cords
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs
    • D10B2505/022—Reinforcing materials; Prepregs for tyres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/902—Reinforcing or tire cords

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tires In General (AREA)
  • Ropes Or Cables (AREA)

Abstract

PURPOSE: Provided is steel cord applied aramid fiber cord which is characterized by increased rubber penetrating property, durability, abrasion resistance, excellent strength and excellent adhesive property, and is useful for a tire for a passenger car. CONSTITUTION: On the steel cord, three steel filaments are twisted spirally with parallel, and the aramid fiber cords are twisted spirally with parallel on the center and the outside. The steel filament having at least 290kg/mm¬2 of strength is obtained by: wire-drawing high-carbon steel rod wire having 0.7-1.1wt.% of carbon content on 90-98% of reducing ratio; and electro-plating with copper or copper alloy. The aramide fiber cord having at least 23gf/denier of strength is coated with resorcinol formaldehyde latex resin.

Description

아라미드 섬유코드가 적용된 스틸코드Steel Cord with Aramid Fiber Cord

본 발명은 아라미드 섬유코드가 적용된 1X3구조의 스틸코드에 관한 것으로서, 보다 상세하게는 스틸코드의 중심부에 아라미드코드를 적용하므로써 스틸코드의 개방(open) 구조를 향상시켜 배합고무와의 접착성을 향상시키고, 또한 스틸코드 주위에 아라미드코드를 적용하므로써 스틸코드간의 마모를 줄여 타이어의 접착 내구성을 향상시킨 스틸코드에 관한 것이다.The present invention relates to a steel cord having a 1 × 3 structure to which an aramid fiber cord is applied. More specifically, by applying an aramid cord to the center of the steel cord, the open structure of the steel cord is improved to improve adhesion to the compounded rubber. The present invention relates to a steel cord having improved abrasion resistance of a tire by reducing abrasion between steel cords by applying aramid cord around the steel cord.

일반적으로, 승용차용 래디알 타이어의 벨트 보강재로는 주로 스틸 와이어를 연선한 스틸코드가 사용되고 있다. 이러한 스틸코드는 수분 또는 염분에 의해 쉽게 부식되는 성질을 가지고 있으며, 이런 부식현상은 배합고무와의 접착성을 하락시켜 타이어의 접착 내구성 하락에 크게 영향을 미치게 된다. 특히, 배합고무 코드 중심부로의 침투성은 접착성과 밀접한 관계를 가지고 있다. 즉, 고무 침투성이 좋으면 스틸코드와의 화학적, 물리적 접착성이 증가하게 된다. 특히, 스틸코드에서는 물리적 결합에 의한 접착성 증대가 중요하기 때문에 코드를 개방(open) 구조로 제조하여 고무 침투성을 증가시키고 있다.In general, a steel cord mainly wired with steel wire is used as a belt reinforcing material of a radial tire for a passenger car. These steel cords are easily corroded by moisture or salt, and this corrosion phenomenon significantly reduces the adhesion with the compounded rubber, which greatly affects the adhesion durability of the tire. In particular, the permeability to the center of the compound rubber cord is closely related to the adhesiveness. In other words, if the rubber permeability is good, the chemical and physical adhesion to the steel cord is increased. In particular, in steel cords, it is important to increase adhesion due to physical bonding, so that cords are manufactured in an open structure to increase rubber permeability.

종래의 벨트 보강재로 사용된 1X3 구조의 스틸코드는 3개의 단선 필라멘트가 평행하게 나선형으로 감겨진 구조를 이루고 있어 고무 침투성이 비교적 우수하다. 그러나, 이런 코드가 빽빽하게 감겨질 경우, 단선 필라멘트끼리의 접촉점이 증가하여 고무 침투성이 저하되고, 필라멘트의 접촉점에서의 마모가 증가하여 코드의 내피로성이 하락되는 문제점이 있으며, 특히, 공정 중에 고무 침투성이 불량하여 고정불량을 일으키는 문제점이 있다.Steel cord having a 1 × 3 structure used as a conventional belt reinforcement has a structure in which three single wire filaments are spirally wound in parallel to each other so that rubber penetration is relatively excellent. However, when such a cord is tightly wound, there is a problem in that the contact points between single-line filaments are increased to reduce rubber permeability, and the wear resistance at the contact points of the filaments is increased, thereby reducing the fatigue resistance of the cord. There is a problem that this is bad and causes a fixed failure.

따라서, 본 발명자들은 상기한 문제점을 해결하고자 예의 검토한 결과, 스틸코드의 중심부에 아라미드 코드를 적용하여 스틸필라멘트끼리의 직접 접촉점을 줄이는 동시에 중심부의 공간을 의도적으로 확보함으로써 고무 침투성을 향상시키고, 또한 스틸코드 주위로 아라미드 코드를 평행하게 감아 스틸코드의 접촉점을 줄이는 동시에 배합고무와의 화학적 반응에 의한 접착성을 향상시킨 스틸코드를 개발하게 되었다.Accordingly, the present inventors have diligently studied to solve the above problems, and as a result, by applying an aramid cord to the center of the steel cord to reduce the direct contact point between the steel filaments, while intentionally securing space in the center, the rubber penetration is improved. Aramid cord was wound around the steel cord in parallel to reduce the contact point of the steel cord and to improve the adhesion by chemical reaction with compound rubber.

도 1은 본 발명의 스틸코드를 도시한 사시도,1 is a perspective view showing a steel cord of the present invention,

도 2는 본 발명의 스틸코드를 도시한 종단면도.Figure 2 is a longitudinal sectional view showing a steel cord of the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 스틸 필라멘트, 2 아라미드 코드.1 steel filament, 2 aramid cords.

본 발명의 스틸코드는 3개의 스틸 필라멘트가 평행하게 나선형으로 꼬여 있으며 그 중심부와 외부에서 아라미드 섬유코드가 평행하게 나선형으로 꼬여 있는 것을 특징으로 한다.The steel cord of the present invention is characterized in that three steel filaments are twisted in parallel spirally, and the aramid fiber cords are twisted in parallel spirally at the center and the outside thereof.

즉, 도 1에 도시된 바와 같이, 본 발명의 스틸코드는 1X3구조의 스틸 필라멘트 중심부에 1가닥의 아라미드 섬유코드가, 스틸 필라멘트 주위에는 3가닥의 아라미드 섬유코드가 평행하게 나선형으로 꼬여 있는 구조를 갖는다.That is, as shown in Figure 1, the steel cord of the present invention has a structure in which one strand of aramid fiber cord in the center of the steel filament of the 1X3 structure, three strands of aramid fiber cord around the steel filament spirally twisted in parallel spirally. Have

본 발명에 사용된 아라미드 섬유코드는 고무와의 접착성을 높이기 위하여 레소시놀 포름알데히드 라텍스(RFL) 수지로 코팅되고 강도가 23gf/데니어 이상인 것이며, 스틸 필라멘트는 탄소함량이 0.7∼1.10중량%인 고탄소강 선재를 90∼98%의 감면율로 신선하여 구리 또는 구리 합금으로 전기도금하여 제조된 것이며, 그 강도는 290kg/㎟ 이상이다.Aramid fiber cord used in the present invention is coated with a resorcinol formaldehyde latex (RFL) resin to increase the adhesion to rubber, the strength is 23gf / denier or more, the steel filament has a carbon content of 0.7 to 1.10% by weight It is manufactured by drawing high carbon steel wire with 90 ~ 98% reduction rate and electroplating with copper or copper alloy, and its strength is more than 290kg / mm2.

이하, 실시예를 통하여 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail through examples.

실시예Example

하기 표에 따라 스틸코드를 제조하고, 그 특성을 비교시험하였다.Steel cords were prepared according to the following table, and their characteristics were compared and tested.

강도 및 신율은 인장시험기로 측정하였고, LLE은 0.3kgf와 1.6kgf 범위에서의 신율 변화를 측정하였다. 내피로성은 회전 피로시험기(Rotation Beam Fatique Tester)에서 150kg/㎟의 피로 응력하에서 파괴될 때까지의 반복수를 측정하였다. 고무 침투성은 스틸 코드를 고무에 매설하여 500psi의 압력하에서 가류한 시편을 10% 염화나트륨 용액에서 15일간 침적시킨 후 염화나트륨에 침투해 들어간 깊이를 측정하였다. 접착성은 풀아웃시험(pull-out test) 및 박리시험으로 측정하였다.Strength and elongation were measured with a tensile tester, and LLE measured elongation change in the range of 0.3 kgf and 1.6 kgf. Fatigue resistance was measured by the number of repetitions until failure under a fatigue stress of 150 kg / mm 2 in a rotational fatigue tester. The rubber permeability was measured by embedding a steel cord in rubber and immersing the specimen vulcanized under a pressure of 500 psi for 15 days in a 10% sodium chloride solution and then penetrating the sodium chloride. Adhesion was measured by pull-out test and peel test.

[표][table]

구 분division 실시예 1Example 1 실시예 2Example 2 비교예Comparative example 시편Psalter 스틸코드코드 직경(㎜)진폭(㎜)피치(㎜)아라미드 코드Steel cord Cord diameter (mm) Amplitude (mm) Pitch (mm) Aramid cord 1×3×0.280.690.54.0300D/1P,400D/1P1 × 3 × 0.280.690.54.0300D / 1P, 400D / 1P 1×3×0.280.680.50.2300D/1P,400D/1P1 × 3 × 0.280.680.50.2300D / 1P, 400D / 1P 1×3×0.280.660.50.2-1 × 3 × 0.280.660.50.2- 특성characteristic 파단강도(kg/㎟)파단신율(%)내피로성(kcycle)LLE(%)접착성(kgf/in)/고무부착율(%)(풀아웃강도)초기습윤노화(박리강도)초기습윤노화고무침투성(㎜)Elongation at break (kg / mm2) Elongation at break (%) Fatigue resistance (kcycle) LLE (%) Adhesion (kgf / in) / Rubber adhesion rate (%) (pull out strength) Initial wet aging (peel strength) Initial wet aging Rubber penetration (mm) 3503.532.30.0652/10046/9529/10026/9513503.532.30.0652 / 10046/9529/10026/951 3503.2300.05750/10044/9028/10026/9523503.2300.05750 / 10044/9028/10026/952 3242.3270.05132/8025/4025/10020/8083242.3270.05132 / 8025/4025/10020/808

상기 결과로부터 알 수 있듯이, 본 발명의 스틸코드는 종래의 것에 비해 강도 및 내피로성이 우수하며 고무 침투성도 뛰어나다. 또한, 배합고무와의 접착성도 종래의 것에 비해 월등히 높고, 특히 수분노화 후의 강도하락이 낮고 고무 부착율이 높아 접착 내구성이 뛰어나다. 이는 아라미드코드의 사용으로 인한 스틸코드 구조의 공간확보가 우수하고 아라미드코드와 배합고무와의 화학적 결합이 접착 내구성 향상에 크게 기여하기 때문인 것으로 여겨진다.As can be seen from the above results, the steel cord of the present invention is excellent in strength and fatigue resistance and excellent in rubber permeability compared to the conventional one. In addition, the adhesiveness with the compounded rubber is also much higher than that of the conventional one, and in particular, the strength drop after moisture aging is low, and the rubber adhesion rate is high, so the adhesive durability is excellent. It is believed that this is because the space of steel cord structure is excellent due to the use of aramid cord, and the chemical bond between aramid cord and compounded rubber contributes to the improvement of adhesive durability.

본 발명의 스틸코드가 승용차용 타이어의 벨트 보강재로 사용되면 고무 침투성이 향상되고 동시에 배합고무와의 접착성을 높여 주행 중의 타이어 내구력을 크게 향상시키며, 또한 스틸코드의 중심부에 위치한 아라미드 코드가 완충재 역할을 하므로써 스틸코드의 내마모성이 크게 향상되어 주행중 타이어 외부 충격에 의한 스틸코드의 상처 발생을 억제시켜 타이어의 내구력을 향상시키게 된다.When the steel cord of the present invention is used as a belt reinforcing material of a tire for a passenger car, rubber permeability is improved and adhesiveness with the compounded rubber is improved, thereby greatly improving tire durability while driving, and the aramid cord located at the center of the steel cord serves as a cushioning material. As a result, the wear resistance of the steel cord is greatly improved, thereby suppressing the occurrence of scratches on the steel cord due to the external impact of the tire while driving, thereby improving the durability of the tire.

Claims (3)

3개의 스틸필라멘트가 평행하게 나선형으로 꼬여 있으며, 그 중심부와 외부에서 아라미드 섬유코드가 평행하게 나선형으로 꼬여 있는 것을 특징으로 하는 스틸코드.A steel cord characterized by three steel filaments twisted in parallel spirally, and aramid fiber cord twisted in parallel spirally at the center and the outside thereof. 제 1 항에 있어서, 스틸 필라멘트는 탄소함량이 0.7∼1.1중량%인 고탄소강 선재를 90∼98%의 감면율로 신선하여 구리 또는 구리합금으로 전기도금하여 제조된 것이며, 290kg/㎟ 이상의 강도를 갖는 것을 특징으로 하는 스틸코드.The method of claim 1, wherein the steel filament is produced by drawing a high carbon steel wire having a carbon content of 0.7 to 1.1% by weight with a reduction rate of 90 to 98% and electroplating with copper or a copper alloy, and having a strength of 290 kg / mm 2 or more. Steel cord, characterized in that. 제 1 항에 있어서, 아라미드 섬유코드는 레솔시놀 포름알데히드 라텍스수지로 코팅되고 강도가 23gf/데니어 이상인 것을 특징으로 하는 스틸코드.The steel cord of claim 1, wherein the aramid fiber cord is coated with resorcinol formaldehyde latex resin and has a strength of at least 23 gf / denier.
KR1019980000578A 1998-01-12 1998-01-12 Steel cord applied aramid fiber cord KR100264428B1 (en)

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KR100866313B1 (en) * 2008-03-31 2008-10-31 주식회사 샤인 Window screen

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CN114214856B (en) * 2021-11-01 2023-04-14 江阴法尔胜住电新材料有限公司 Method for manufacturing composite steel strand

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH05212816A (en) * 1992-02-05 1993-08-24 Toyo Tire & Rubber Co Ltd Pneumatic tire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05212816A (en) * 1992-02-05 1993-08-24 Toyo Tire & Rubber Co Ltd Pneumatic tire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100866313B1 (en) * 2008-03-31 2008-10-31 주식회사 샤인 Window screen

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