KR19990009414A - Rubber composition with improved wear resistance and rolling resistance - Google Patents
Rubber composition with improved wear resistance and rolling resistance Download PDFInfo
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- KR19990009414A KR19990009414A KR1019970031826A KR19970031826A KR19990009414A KR 19990009414 A KR19990009414 A KR 19990009414A KR 1019970031826 A KR1019970031826 A KR 1019970031826A KR 19970031826 A KR19970031826 A KR 19970031826A KR 19990009414 A KR19990009414 A KR 19990009414A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- 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
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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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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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
- C08L101/00—Compositions of unspecified macromolecular compounds
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract
본 발명은 원료고무로서 오일이 첨가된 용액중합 SBR 고무(Oil Extended SBR Rubber)와 BR고무를 사용하면서 실리카를 다량 적용하는 경우, AHRFA 가소제(Aromatic Hydrocarbon Resins Fatty Acid Derivatives) 사용함을 특징으로 하는 고무 조성물에 관한 것이다.The present invention is a rubber composition characterized by using AHRFA plasticizers (Aromatic Hydrocarbon Resins Fatty Acid Derivatives) when a large amount of silica is applied while using oil-based solution polymerized SBR rubber and BR rubber as raw material rubbers. It is about.
본 발명에 사용되는 AHRFA 가소제의 사용으로 실리카 고무 조성물에서 실리카 표면의 반응성이 강한 실라놀(Silnanol)기의 응집으로 점도상승 및 분산성 하락을 방지하기 위하여 가소제로서 사용하는데, 실리카의 분산성 및 회전저항 특성을 개선하고, 내마모성, 향상, 배합물의 점도 상승방지로 공정상 가공성을 향상시킬 수 있는 고무 조성물을 얻을 수 있다.The AHRFA plasticizer used in the present invention is used as a plasticizer to prevent viscosity increase and dispersibility drop due to aggregation of highly reactive silanol groups on the silica surface in the silica rubber composition. It is possible to obtain a rubber composition which can improve the processability by improving the resistance characteristics, preventing wear resistance, improving the viscosity of the compound and increasing the viscosity.
Description
본 발명은 내마모성과 회전저항이 향상된 고무조성물에 관한 것으로, 좀더 상세하게는 TBR 또는 RCR 승용차 타이어에 있어서 트레드(Tead) 부위의 회전저항과 내마모성을 향상시키기 위하여 실리카를 사용하는 고무조성물에 가소제를 적용하여 물성을 향상시키고, 공정 가공성을 향상시킨 고무 조성물에 관한 것이다.The present invention relates to a rubber composition having improved abrasion resistance and rotational resistance, and more particularly, to a plastic composition applied to a rubber composition using silica to improve rotational resistance and abrasion resistance of a tread portion in a TBR or RCR car tire. It improves a physical property and relates to the rubber composition which improved process processability.
오늘날 타이어의 요구 성능은 매우 다양하여 소비자들의 기호에 맞는 타이어를 공급하는 것이 타이어 회사의 궁극적인 목표가 되고 있다.The performance demands of today's tires are so diverse that it is the ultimate goal of the tire company to supply tires to consumers' tastes.
종래에는 트레드 부위의 회전저항과 내마모성을 개선하기 위하여 표면적이 적고 구조가 큰 카본 블랙이나, 실리카를 다량 사용하는 고무조성물을 사용하였으나, 이러한 고무조성물은 실리카 표면의 실라놀기가 반응성과 응집력이 강하여 점도가 증가되고 분산성이 하락되어 공정 가공성에 문제점이 있다. 이를 개선하기 위하여 배합물을 리밀링(Remilling)에 의한 방법으로 문제점 해결을 시도하고 있으나, 이 방법은 생산성 하락과 원가 상승의 요인이 되고 있다.Conventionally, in order to improve the rolling resistance and abrasion resistance of the tread part, carbon black having a large surface area and a large structure or rubber composition using a large amount of silica is used. Is increased and the dispersibility is reduced, there is a problem in process processability. In order to improve this problem, attempts to solve the problem by remilling the compound, but this method is a factor of the decrease in productivity and cost.
따라서, 본 발명의 목적은 종래의 문제점을 해결하기 위하여 타이어에 첨가되는 약품중 실리카 표면의 반응성이 강한 실라놀기 끼리의 응집으로 점도 상승 및 분산성 하락을 방지 하기 위하여 특수 가소제 적용으로 실리카 분산성 개선, 점도 하락 및 이로인한 물성을 향상시킬 수 있는 고무조성물을 제공하는데 있다.Accordingly, an object of the present invention is to improve silica dispersibility by applying a special plasticizer to prevent viscosity increase and dispersibility decrease by aggregation of silanol groups, which are highly reactive on the silica surface, in the chemicals added to the tire to solve the conventional problems. To provide a rubber composition that can reduce the viscosity, and thereby improve the physical properties.
상기와 같은 목적을 달성하기 위한 본 발명에 따른 고무조성물은 기존에 사용하던 실리카를 사용하여 회전저항 특성을 개선하고, 내마모성향상, 배합물의 점도상승을 방지하여 공정가공성 향상 및 리밀링 횟수 감소로 생산성 향상을 기할 수 있는 고무조성물에 관한 것이다.Rubber composition according to the present invention for achieving the above object is to improve the rotational resistance characteristics using the silica used in the past, to improve the wear resistance, to prevent the viscosity rise of the formulation to improve the processability and reduce the number of re-milling productivity The present invention relates to a rubber composition capable of improving.
1). 시험 고무의 준비One). Preparation of Exam Rubber
고무의 배합은 고무의 가공성과 화학적인 반응 특성을 고려하여 배합비를 설정한다. 배합 순서는 반바리 믹서(BANBURY MLXER)에서 원료고무로 오일이 첨가된 SBR 고무(Oil Extended SBR Rubber) 100-120 phr과 BR 고무 10-30 phr를 혼합하고, 실리카 40-70 phr과 가류활성제, 카본블랙, 노화방지제, 황 및 가황촉진제를 투입한다. 이때 실리카의 분산을 개선하기 위하여 AHRFA 가소제(Aromatic Hydrocarbon Resins and Fatty Acid Derivatives)를 2-6 phr 첨가하여 혼합한 다음, 160℃에서 방출시켜 고무조성물을 제조한다.The compounding ratio of the rubber is set in consideration of the processability and chemical reaction characteristics of the rubber. The mixing sequence is 100-120 phr of oil extended SBR rubber and 10-30 phr of BR rubber as a raw material rubber in BANBURY MLXER, silica 40-70 phr, vulcanization activator, Carbon black, antioxidants, sulfur and vulcanization accelerators are added. At this time, in order to improve the dispersion of silica, AHRFA plasticizer (Aromatic Hydrocarbon Resins and Fatty Acid Derivatives) 2-6 phr is added and mixed, and then released at 160 ℃ to prepare a rubber composition.
2). 가황특성 및 물성측정2). Vulcanization and Property Measurement
생성된 고무조성물의 인장시편의 가황조건 및 물성시험은 ASTM 표준규격에 준하여 시험을 실시한다.The vulcanization conditions and the physical properties of tensile specimens of the resulting rubber compositions are tested according to the ASTM standard.
즉, 무늬점도시험 및 스코치시간은 ASTM D1646-93, 경도시험은 ASTM D2240-91, 인장시험은 ASTM D412-92, 피코마모시험은 ASTM D2228-83 등에 의하여 물리적 특성시험을 수행한다.That is, the pattern viscosity test and the scorch time are ASTM D1646-93, the hardness test is ASTM D2240-91, the tensile test is ASTM D412-92, the pico-abrasion test is physical properties test according to ASTM D2228-83.
다음의 실시예 및 비교예를 통하여 본 발명을 보다 상세히 설명한다.The present invention will be described in more detail with reference to the following examples and comparative examples.
그러나, 본 발명이 이들 실시예에 국한되는것은 아니다.However, the present invention is not limited to these examples.
실시예 1Example 1
오일이 첨가된 용액중합 SBR 고무 110 phr, BR 고무 20 phr를 반바리 믹서(banbury mixer)에서 혼합하고, 활성제로 산화아연 3 phr, 스테아린산 2 phr, 보강제로 카본블랙 20 phr 및 실리카 60 phr, 노화방지제 4 phr, 공정오일 8 phr, 유황, 2 phr, 가류활성제 3 phr 및 가황촉진제 1.7 phr를 첨가하였다. 이때, 실리카를 분산시키기 위하여 가소제로서 AHRFA 4 phr를 첨가하여 혼합한 후, 160℃에서 방출시켰다. 생성된 고무조성물의 인장시편의 가황조건 및 물성을 ASTM 표준규격을 의하여 시험하였는 바, 고무 조성물의 배합비 및 물성시험 결과를 표 1 및 표 2에 나타내었다.110 phr oil-polymerized SBR rubber 110 phr, BR rubber 20 phr are mixed in a banbury mixer, 3 phr zinc oxide as activator, 2 phr stearic acid, 20 phr carbon black and 60 phr silica as reinforcing agent 4 phr of inhibitor, 8 phr of process oil, sulfur, 2 phr, 3 phr of vulcanizing agent and 1.7 phr of vulcanization accelerator were added. At this time, 4 phr of AHRFA was added as a plasticizer to disperse the silica, mixed, and then released at 160 ° C. The vulcanization conditions and physical properties of the tensile specimens of the resulting rubber composition were tested by ASTM standard. The compounding ratios and physical property test results of the rubber compositions are shown in Tables 1 and 2.
실시예 2Example 2
AHRFA를 6 phr, 공정오일을 6 phr 첨가하는 것 이외에는 실시예 1과 동일하게 실시하여 고무조성물을 제조하였는 바, 고무조성물의 배합비 및 물성시험 결과를 표 1 및 표 2에 나타내었다.A rubber composition was prepared in the same manner as in Example 1 except for adding 6 phr of AHRFA and 6 phr of process oil, and the mixing ratio and physical property test results of the rubber composition are shown in Table 1 and Table 2.
비교예Comparative example
가소제인 AHRFA를 첨가하지 않고, 공정오일을 10 phr 첨가하는 것 이외에는 실시예 1과 동일하게 실시하여 고무조성물을 제조하였는 바, 고무조성물의 배합비 및 물성시험 결과를 표 1 및 표 2에 나타내었다.A rubber composition was prepared in the same manner as in Example 1 except that 10 phr of process oil was added without adding AHRFA, which is a plasticizer, and the blending ratio and physical property test results of the rubber composition are shown in Tables 1 and 2.
표 1. 고무조성물의 배합비Table 1. Mixing ratio of rubber composition
표 2. 가황 특성 및 물성시험 결과Table 2. Vulcanization Characteristics and Property Test Results
본 발명에 의한 고무조성물은 상기 표 2에서 나타난 결광에서 보듯이, 실리카 분산제인 AHRFA (Aromatic Resins and Fatty Acid Derivatives)를 사용한 경우에는 고무점도가 낮아져 공정 가공성이 향상되었으며, 적정 가황시간도 단축되는 효과를 보았다. 또한, 마모성능의 향상 및 회전저항 감소로 인하여 주행 연비성능이 개선되었다.In the rubber composition according to the present invention, when the silica dispersant AHRFA (Aromatic Resins and Fatty Acid Derivatives) is used as shown in Table 2, the rubber viscosity is lowered, thereby improving processability and shortening the appropriate vulcanization time. Saw. In addition, the driving fuel efficiency is improved due to the improvement of wear performance and the reduction of rolling resistance.
본 발명에서와 같이 실리카를 다량 사용한 고무 조성물에 AHRFA 가소제(Aromatic Hydrocarbon Resins and Fatty Acid Derivatives)를 첨가시키면 내마모성과 회전저항이 향상된 고무조성물을 얻을 수 있다.When the AHRFA plasticizer (Aromatic Hydrocarbon Resins and Fatty Acid Derivatives) is added to the rubber composition using a large amount of silica as in the present invention, a rubber composition having improved abrasion resistance and rotational resistance can be obtained.
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KR1019970031826A KR100228869B1 (en) | 1997-07-09 | 1997-07-09 | An improved anti-abrasion rubber composition |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030030138A (en) * | 2001-10-08 | 2003-04-18 | 금호산업 주식회사 | Tread rubber composition with silica improved processibility and dispersibility |
KR101467189B1 (en) * | 2012-04-26 | 2014-12-01 | 금호타이어 주식회사 | Tire tread rubber composition |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100437688B1 (en) * | 2001-03-27 | 2004-06-26 | 금호타이어 주식회사 | Dispersion-Improved Silica-filled SBR compounds for Tire |
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JPS61215637A (en) * | 1985-03-22 | 1986-09-25 | Bridgestone Corp | Silica-filled rubber composition |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20030030138A (en) * | 2001-10-08 | 2003-04-18 | 금호산업 주식회사 | Tread rubber composition with silica improved processibility and dispersibility |
KR101467189B1 (en) * | 2012-04-26 | 2014-12-01 | 금호타이어 주식회사 | Tire tread rubber composition |
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