KR19990017265A - Bladder rubber composition with improved thermal conductivity - Google Patents

Bladder rubber composition with improved thermal conductivity Download PDF

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Publication number
KR19990017265A
KR19990017265A KR1019970040146A KR19970040146A KR19990017265A KR 19990017265 A KR19990017265 A KR 19990017265A KR 1019970040146 A KR1019970040146 A KR 1019970040146A KR 19970040146 A KR19970040146 A KR 19970040146A KR 19990017265 A KR19990017265 A KR 19990017265A
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South Korea
Prior art keywords
rubber
weight
parts
thermal conductivity
graphite
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KR1019970040146A
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Korean (ko)
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KR100234480B1 (en
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고진환
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신형인
금호타이어 주식회사
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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
    • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
    • 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
    • B60C1/0041—Compositions of the carcass layers
    • 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
    • C08L11/00—Compositions of homopolymers or copolymers of chloroprene

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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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

본 발명은 원료 고무의 일정량에 대하여 뷰틸 고무와 네오프렌 고무 그리고 열전도성이 우수한 흑연(Graphite)을 적용하여 열전도성이 향상된 고무 조성물에 관한 것으로, 원료 고무 100 중량부에 대하여 뷰틸 고무 95 중량부, 네오프렌 고무 5 중량부, 가류활성체 6 중량부, 카본블랙 40-45 중량부, 오일 3 중량부 그리고, 흑연(graphite) 5-10 중량부를 사용하여 열전도성이 향상된 고무조성물을 얻었다.The present invention relates to a rubber composition having improved thermal conductivity by applying butyl rubber, neoprene rubber and graphite having excellent thermal conductivity with respect to a predetermined amount of raw rubber, wherein 95 parts by weight of butyl rubber and neoprene with respect to 100 parts by weight of raw rubber 5 parts by weight of rubber, 6 parts by weight of vulcanization active agent, 40-45 parts by weight of carbon black, 3 parts by weight of oil, and 5-10 parts by weight of graphite were used to obtain a rubber composition having improved thermal conductivity.

본 발명에 의하면 타이어의 가류시 외부와 열온이 직접 전달될 때, 고무부위의 손상을 방지하기 위하여 블레더라는 매개체를 사용하고 있으며, 열전도성이 우수한 흑연을 적용하여 고무조성물로 제조하면 열에너지 손실을 감소시킬 수 있다.According to the present invention, when the outside and heat temperature is directly transmitted when the tire is vulcanized, a medium called a bladder is used to prevent damage to the rubber part, and when the rubber composition is manufactured by applying graphite having excellent thermal conductivity, heat energy loss is reduced. You can.

Description

열전도성이 향상된 블레더 고무 조성물Bladder rubber composition with improved thermal conductivity

본 발명은 열전도성이 향상된 블레더 고무(bladder rubber) 조성물에 관한 것이다. 종래에는 블레더 고무의 물성을 개선하기 위하여 뷰틸 고무와 네오프렌 고무에 카본블랙을 적정량 사용하였다. 고분자인 고무는 열전도성에서는 매우 낮은 성능을 갖고 있기 때문에, 타이어 제조시 가류공정에서 가류를 하는 매개체로서 외부와 내부에 온도를 상승시켜서 가류를 하고 있다. 이때 내부에 온도를 전달하기 위하여 스팀이나 열수(hot water)를 사용하는데 타이어 인너라이너에 열온이 직접 전달될 때에는 고무부위에 손상을 주게 되므로 브레다라고 하는 매개체를 사용하여 열온을 전달하고 있다. 그러나, 블레더의 사용으로 고무의 내부 및 외부에 열전달을 원활히 하기에는 어려운 점이 있었다.The present invention relates to a bladder rubber composition with improved thermal conductivity. Conventionally, an appropriate amount of carbon black is used for butyl rubber and neoprene rubber in order to improve physical properties of the bladder rubber. Since rubber, which is a polymer, has a very low performance in thermal conductivity, it is vulcanized by raising the temperature inside and outside as a medium for vulcanization in the vulcanization process during tire manufacturing. At this time, steam or hot water is used to transmit the temperature inside. When heat temperature is directly transmitted to the tire innerliner, the rubber part is damaged, thereby transferring heat temperature using a medium called Breda. However, the use of the bladder was difficult to facilitate heat transfer to the inside and outside of the rubber.

타이어의 가류에 있어서 블레더의 가장 중요한 기능은 열전도성을 향상시켜 에너지 송실을 최소화하는 것으로서, 본 발명은 이러한 타이어 내부 및 외부 열전달의 문제점을 해결하기 위한 수단의 하나로서, 배합물의 물성을 조정하고 열전도성이 우수한 재료를 적용하여 열전도성을 증가시켜 에너지 손실을 최저로 하고자 하였다. 따라서, 본 발명은 고무 조성물 중에서 열전도성이 우수한 흑연(graphite)를 적용하여 열전도성을 향상시킬 수 있는 고무조성물을 제공하는 데 있다.The most important function of the bladder in the vulcanization of the tire is to improve thermal conductivity and minimize energy loss. The present invention is one of the means to solve the problems of internal and external heat transfer of the tire, By applying a material having excellent thermal conductivity, the thermal conductivity was increased to minimize energy loss. Accordingly, the present invention is to provide a rubber composition that can improve the thermal conductivity by applying graphite (excellent thermal conductivity) in the rubber composition.

본 발명은 원료 고무의 일정량에 대하여 뷰틸 고무와 네오프렌 고무 적용과 열전도성이 우수한 흑연을 적용하여 열전도성이 향상되는 고무 조성물을 제조하였다. 이때, 원료고무 100g에 대한 흑연의 함량은 5-15 wt% 중량부를 함유하고, 뷰틸 고무는 80-98, 네오프렌 고무는 2-20 중량부를 함유하는 것이 열 전도성이 가장 좋다.The present invention prepared a rubber composition in which thermal conductivity is improved by applying butyl rubber and neoprene rubber and graphite having excellent thermal conductivity to a predetermined amount of raw rubber. At this time, the content of graphite to 100g of the raw material rubber contains 5-15 wt% by weight, butyl rubber 80-98, neoprene rubber 2-20 parts by weight is the best thermal conductivity.

다음의 실시예 및 비교예를 통하여 본 발명을 보다 상세히 설명하고자 한다. 그러나, 본 발명이 이들 실시예에 국한되는 것은 아니다.Through the following examples and comparative examples will be described in more detail the present invention. However, the present invention is not limited to these examples.

(실시예 1-3)(Example 1-3)

고무의 가공성과 화학적인 특성을 고려하여 배합조성과 배합순서를 정하고, 고무의 중량을 100으로 하여 뷰틸 고무 95 중량부와 네오프렌 고무 5 중량부를 정량한 후, 반바리 믹서에 이들 고무를 먼저 투입한 후 활성제 6중량부, 공정오일 3중량부, 카본블랙 40-45중량부, 흑연 5-10중량부, 레진 7중량부를 혼합하여 고무 조성물을 얻었다.In consideration of the processability and chemical properties of the rubber, the compounding composition and the order of mixing are determined, and the weight of the rubber is 100 to quantify 95 parts by weight of butyl rubber and 5 parts by weight of neoprene rubber. 6 parts by weight of the active agent, 3 parts by weight of process oil, 40-45 parts by weight of carbon black, 5-10 parts by weight of graphite, and 7 parts by weight of resin were mixed to obtain a rubber composition.

(비교예)(Comparative Example)

실시예 1과 동일한 방법으로 하고, 카본블랙에 50중량부를 첨가하였으며 흑연은 첨가하지 않았다.In the same manner as in Example 1, 50 parts by weight was added to carbon black, and no graphite was added.

표 1은 본원 발명의 실시예와 비교예의 배합비를 나타내고 있으며, 카본블랙과 흑연을 제외하고는 배합비의 차이가 없다는 것을 알 수 있다.Table 1 shows the compounding ratios of the examples and comparative examples of the present invention, it can be seen that there is no difference in the compounding ratio except carbon black and graphite.

[표 1] 고무 배합표Table 1 Rubber Compounding Table

(단위 : 중량부)(Unit: parts by weight)

1) 흑연 : power graphite, 200 mesh 이하의 미세한 재료1) Graphite: Power graphite, fine material less than 200 mesh

2) 레진 : SP 1045 레진2) Resin: SP 1045 Resin

배합고무의 가황특성 및 물성측정을 시험하기 위하여 가황조건 및 시험은 ASTM 규격에 준하여 시험하였고, 그 결과는 표 2와 같다.In order to test the vulcanization characteristics and physical properties of the compounded rubbers, the vulcanization conditions and tests were tested according to ASTM standards, and the results are shown in Table 2.

[표 2] 가황특성과 물성시험측정[Table 2] Vulcanization Characteristics and Physical Property Test Measurement

상기 표 2의 결과에서 나타난 바와 같이, 본원 발명의 실시예가 비교예에 비하여 신장율과 열전도성이 우수한 것을 알 수 있다. 즉, 열전도성이 우수한 그라파이트를 10중량부 적용시 열전도성은 30% 향상되는 결과를 나타내며, 제반 물성에서는 커다란 차이가 없음을 알 수 있다.As shown in the results of Table 2, it can be seen that the Example of the present invention is excellent in elongation and thermal conductivity compared to the Comparative Example. That is, when 10 parts by weight of graphite having excellent thermal conductivity results in a 30% improvement in thermal conductivity, it can be seen that there is no significant difference in general physical properties.

이와 같이, 뷰틸고무와 네오프렌고무에 열전도성이 우수한 흑연을 적용하여 열전도성이 향상되는 고무조성물을 얻을 수 있다.As such, by applying graphite excellent in thermal conductivity to butyl rubber and neoprene rubber, a rubber composition having improved thermal conductivity can be obtained.

본 발명은 열 전도성이 우수한 흑연을 부틸고무와 네오프렌 고무에 적용하여 신장율과 열전도성이 기존보다 월등히 향상된 고무 조성물을 얻었다.The present invention is applied to the graphite excellent butyl rubber and neoprene rubber with excellent thermal conductivity to obtain a rubber composition significantly improved than the conventional elongation and thermal conductivity.

Claims (2)

고무의 열전도성을 향상시키기 위한 타이어용 블레더 고무 조성물에 있어서, 부틸고무와 네오프렌 고무를 주성분으로 하고 흑연을 혼합하여 사용되는 것을 특징으로 하는 타이어용 블레더 고무 조성물.A bladder rubber composition for tires for improving the thermal conductivity of rubber, wherein the bladder rubber composition for tires is used by mixing butyl rubber and neoprene rubber as a main component and graphite. 제1항에 있어서, 원료고무 100중량부에 대하여 부틸고부 80-98중량부, 네오프렌 고무 2-20 중량부와 흑연 5-15 중량부를 함유하는 것을 특징으로 하는 타이어용 블레더 고무 조성물.The bladder rubber composition for a tire according to claim 1, comprising 80-98 parts by weight of butyl rubber, 2-20 parts by weight of neoprene rubber and 5-15 parts by weight of graphite, based on 100 parts by weight of the raw material rubber.
KR1019970040146A 1997-08-22 1997-08-22 A bladder rubber composition improved thermal conductivity KR100234480B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100837081B1 (en) * 2007-04-20 2008-06-11 넥센타이어 주식회사 Rubber composition and mixing method thereof for cure bladder improving thermal conductivity
KR20100123418A (en) * 2009-05-15 2010-11-24 넥센타이어 주식회사 Rubber compositions for tire inner liner improving thermal conductivity and air permeability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010100739A (en) * 2000-05-08 2001-11-14 신형인 Bladd er Rubber Composition for Improved Mold Release and Lubricant Effect of Bladd er and Inner Section

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100837081B1 (en) * 2007-04-20 2008-06-11 넥센타이어 주식회사 Rubber composition and mixing method thereof for cure bladder improving thermal conductivity
KR20100123418A (en) * 2009-05-15 2010-11-24 넥센타이어 주식회사 Rubber compositions for tire inner liner improving thermal conductivity and air permeability

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