KR100558964B1 - Cure Bladder Compound Improved Flex Resistance and Thermal Conductivity - Google Patents
Cure Bladder Compound Improved Flex Resistance and Thermal Conductivity Download PDFInfo
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- KR100558964B1 KR100558964B1 KR1020030084120A KR20030084120A KR100558964B1 KR 100558964 B1 KR100558964 B1 KR 100558964B1 KR 1020030084120 A KR1020030084120 A KR 1020030084120A KR 20030084120 A KR20030084120 A KR 20030084120A KR 100558964 B1 KR100558964 B1 KR 100558964B1
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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
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- B60C1/0025—Compositions of the sidewalls
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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
- C08L15/00—Compositions of rubber derivatives
- C08L15/02—Rubber derivatives containing halogen
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
본 발명은 가류 브레다용 고무조성물에 관한 것으로, 좀더 상세하게는 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무를 함유함으로써 내굴곡특성 및 열전도 성능이 향상된 가류 브레다용 고무조성물에 관한 것이다. The present invention relates to a rubber composition for vulcanization Breda, and more particularly, to a rubber composition for vulcanization Breda having improved bending resistance and thermal conductivity performance by containing isobutylene bromide-paramethylene butyl rubber as raw material rubber.
본 발명은 부틸고무를 원료고무로 하고 보강충진제로 카본블랙과 아세틸렌 블랙을 함유하는 가류 브레다용 고무조성물에 있어서, 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무(Brominated Isobytylene Paramethylene Copolymer)를 함유함을 특징으로 하는 가류 브레다용 고무조성물을 제공한다. The present invention is a rubber composition for vulcanization Breda containing butyl rubber as a raw material rubber and carbon black and acetylene black as a reinforcing filler, wherein the raw material rubber contains brominated isobytylene paramethylene copolymer. It provides a rubber composition for vulcanization Breda characterized in that.
Description
본 발명은 가류 브레다용 고무조성물에 관한 것으로, 좀더 상세하게는 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무를 함유함으로써 내굴곡특성 및 열전도 성능이 향상된 가류 브레다용 고무조성물에 관한 것이다. The present invention relates to a rubber composition for vulcanization Breda, and more particularly, to a rubber composition for vulcanization Breda having improved bending resistance and thermal conductivity performance by containing isobutylene bromide-paramethylene butyl rubber as raw material rubber.
종래의 타이어 가류 브레다용 고무조성물은 내열성과 내유연성 요구특성을 만족시키기 위하여 원료고무(raw polymer)로 이소부틸렌-이소프렌 고무(isobutylene-isoprene copolymer)를 사용하여 왔다.Conventional rubber compositions for tire vulcanization Breda have used isobutylene-isoprene copolymer as raw polymer (raw polymer) in order to satisfy the heat resistance and flexibility resistance requirements.
종래의 브레다용 고무조성물은 사용조건이 고온에서 사용되기 때문에 일반 고무산업에 사용되는 황 가류가 아닌 고온에서도 고무조성물이 견딜 수 있도록 수지가류(resin cure)를 사용하며 여기에 가류시의 반응활성도를 높이기 위하여 클로로프렌(chloroprene) 고무를 사용한다.The conventional rubber composition for Breda uses resin cure so that the rubber composition can withstand the high temperature instead of sulfur vulcanization used in the general rubber industry because the operating conditions are used at high temperature. In order to increase the chloroprene rubber.
브레다의 경우 사용도중 타이어에서 내공기 투과성을 목적으로 사용되는 부틸고무를 사용한 인너라이너 고무조성물과 기본적으로 특성이 ??아 서로 접착이 잘 되기 때문에 이를 어느 정도 방지하기 위하여 브레다 고무조성물에 왁스(wax)를 사용하기도 한다.In case of Breda, the inner liner rubber composition using butyl rubber which is used for air permeability in the tire during use, and the wax is applied to the Breda rubber composition in order to prevent it to some extent because it is easily adhered to each other due to its basic characteristics. ) May be used.
이소부틸렌-이소프렌 고무를 원료고무로 사용하는 종래의 가류 브레다용 고무조성물은 내열특성, 내노화특성 및 내공기 투과성이 우수하나, 타이어의 가류에 필요한 열전도 특성을 향상시키기 위하여 표면적이 넓고 구조가 잘 발달된 보강제를 사용하여 왔으나, 과량의 카본을 사용할 경우 브레다 원료고무의 구조적 문제로 인하여 분산불량이 발생하여 브레다의 성능중 크랙(crack)특성이 특히 저하되어 고온에서 굴신, 수축, 팽창을 반복해야하는 내굴곡 특성이 낮은 단점이 있었다.Conventional rubber composition for vulcanization Breda using isobutylene-isoprene rubber as raw material rubber has excellent heat resistance, aging resistance and air permeability, but it has a wide surface area and structure to improve the thermal conductivity required for vulcanization of tires. Although a well-developed reinforcing agent has been used, if excessive carbon is used, dispersion defects occur due to structural problems of the raw material rubber of Breda, and the crack characteristics of Breda's performance are deteriorated. There was a disadvantage that the bending resistance should be low.
본 발명자는 상기와 같은 문제점을 해결하기 위한 연구를 지속적으로 수행하여 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무를 사용하여 종래 부틸고무의 장점인 내열 및 내노화 특성을 그대로 유지하면서 상기와 같은 문제점을 해결할 수 있음을 알아내고 본 발명을 완성하였다. The present inventors continue to research to solve the above problems by using isobutylene bromide-paramethylene butyl rubber as the raw material rubber while maintaining the heat and aging resistance properties of the conventional butyl rubber as described above It has been found that the problem can be solved and the present invention has been completed.
따라서, 본 발명의 목적은 내굴곡특성 및 열전도능이 향상된 가류 브레다용 고무조성물을 제공함에 있다.
Accordingly, it is an object of the present invention to provide a rubber composition for vulcanization Breda with improved bending resistance and thermal conductivity.
본 발명은 상기와 같은 목적을 달성하기 위한 수단으로 부틸고무를 원료고무로 하고 보강충진제로 카본블랙과 아세틸렌 블랙을 함유하는 가류 브레다용 고무조 성물에 있어서, 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무(Brominated Isobytylene Paramethylene Copolymer)를 함유함을 특징으로 하는 가류 브레다용 고무조성물을 제공한다. The present invention is a rubber composition for vulcanization Breda containing butyl rubber as a raw material rubber and carbon black and acetylene black as a reinforcing filler as a means for achieving the above object, isobutylene bromide bromide as raw material rubber It provides a rubber composition for vulcanization Breda characterized in that it contains butyl rubber (Brominated Isobytylene Paramethylene Copolymer).
본 발명에 사용되는 브롬화 이소부틸렌-파라메틸렌 부틸고무는 브롬기의 함량이 0.2∼1.5mole%로서, 구조적으로 비정형성(amorphous and bulky)인 특성을 진고 있어 가류브레다의 사용조건인 굴신, 수축, 팽창 저항성을 높여 브레다 크랙에 의한 타이어의 수명저하를 개선할 수 있다.The isobutylene bromide-paramethylene butyl rubber used in the present invention has a bromine group content of 0.2 to 1.5 mole%, which is structurally amorphous and bulky, and thus, flexural and shrinkage conditions of vulcanization bred are used. In addition, it is possible to improve the life of tires due to Breda crack by increasing the expansion resistance.
또한, 이러한 비정형성으로 인하여 브레다 고무조성물의 점도가 낮아져 종래 브레다용 고무조성물 대비 가공성이 유리해질 뿐만 아니라, 구조적으로 폴리머 체인(polymer chain) 간의 공간이 많은 특성으로 인하여 카본 함유능력도 높아지게 되어 높은 열전도 성능 및 높은 물성을 갖게 된다. In addition, due to such non-formality, the viscosity of the Breda rubber composition is lowered, which is advantageous in terms of processability compared to the conventional rubber composition for Breda, and the carbon content is also increased due to the large amount of space between the polymer chains. Performance and high physical properties.
본 발명에 의한 가류 브레다 고무조성물에 보강충진제로 사용되는 카본블랙(carbon black)과 아세틸렌 블랙(acetylene black)의 함량은 1:1∼1:3의 범비율로 사용될 수 있는데, 이는 원료고무로 사용되는 브롬화 이소부틸렌-파라메틸렌 부틸고무의 구조적인 특성으로 인하여 카본함유 능력이 높아지게 됨에 따른 것이다.The content of carbon black and acetylene black used as a reinforcing filler in the vulcanized Breda rubber composition according to the present invention may be used in a ratio of 1: 1 to 1: 3, which is used as a raw material rubber. Due to the structural properties of the isobutylene bromide-paramethylene butyl rubber is to increase the carbon-containing ability.
기타 본 발명에 의한 가류 브레다용 고무조성물에 포함되는 기타 성분 예를 들면, 산화아연, 스테아린산, 노화방지제 등은 공지의 가류 브레다용 고무조성물의 첨가제들로서 이들 각각은 이미 알려진 첨가량의 범위에 따라 적의 선택하여 실시하는 것으로 충분하므로 이들에 관한 상세한 설명은 생략한다. Other components included in the rubber composition for vulcanization Breda according to the present invention, for example, zinc oxide, stearic acid, anti-aging agent and the like are additives of known rubber composition for vulcanization Breda, each of which is suitably selected according to the range of known addition amount. It is enough to carry out by, so detailed description thereof will be omitted.
이하 본 발명의 내용을 실시예 및 비교예를 통하여 구체적으로 설명한다. 그러나 다음의 실시예는 본 발명을 보다 상세하게 설명하기 위한 것으로, 본 발명의 권리범위를 이에 한정하고자 하는 것은 아니다.Hereinafter, the content of the present invention will be described in detail through Examples and Comparative Examples. However, the following examples are intended to illustrate the present invention in more detail, and the scope of the present invention is not intended to be limited thereto.
<실시예 1> <Example 1>
하기 표 1에 개시된 배합비와 같이 원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무 100중량부에 대하여 클로로프렌 고무 5중량부, 카본블랙(N-351) 30중량부, 아세틸렌 블랙 30중량부, 공정오일 4중량부, 산화아연 5중량부, 하이드로카본 수지 혼합물 5중량부, 파라핀계 왁스 2중량부, 스테아린산 1중량부, 수지가류제(resol phenol formaldehyde resin) 8중량부를 배합하여 공지의 방법으로 가류 브레다용 고무조성물을 제조하였다. 5 parts by weight of chloroprene rubber, 30 parts by weight of carbon black (N-351), 30 parts by weight of acetylene black, process oil based on 100 parts by weight of isobutylene-paramethylene butyl rubber as raw material rubber as shown in Table 1 4 parts by weight, 5 parts by weight of zinc oxide, 5 parts by weight of a hydrocarbon resin mixture, 2 parts by weight of paraffin wax, 1 part by weight of stearic acid, 8 parts by weight of a resol phenol formaldehyde resin, and vulcanized Breda by a known method. A rubber composition was prepared.
<실시예 2> <Example 2>
아세틸렌 블랙 40중량부를 첨가하는 것을 제외하고는 실시예 1에서와 동일한 조건하에 실시하여 가류 브레다용 고무조성물을 제조하였다. Except for adding 40 parts by weight of acetylene black was carried out under the same conditions as in Example 1 to prepare a rubber composition for vulcanization Breda.
<비교예> Comparative Example
원료고무로 브롬화 이소부틸렌-파라메틸렌 부틸고무 대신에 이소부틸렌-이소프렌 부틸고무 100중량부를 첨가하는 것을 제외하고는 실시예 1에서와 동일한 조건하에 실시하여 가류 브레다용 고무조성물을 제조하였다. A rubber composition for vulcanized Breda was prepared under the same conditions as in Example 1, except that 100 parts by weight of isobutylene-isoprene butyl rubber was added instead of isobutylene-paramethylene butyl rubber as the raw material rubber.
<표1> 실시예 및 비교예의 배합비(단위:중량부) <Table 1> Compounding ratio (unit: parts by weight) of Examples and Comparative Examples
<시험예 1><Test Example 1>
상기 실시예 1 내지 실시예 2 및 비교예에서 제조한 고무조성물을 160℃에서 15분 동안 가류시켜 인장시편을 제조한 다음, ASTM 규격에 준하여 최종 가류시간(end cure-time), 점도, 경도, 인장강도, 신율, 열전도 등과 같은 물성측정한 결과를 하기의 표 2에 나타내었다.The rubber composition prepared in Examples 1 to 2 and Comparative Example was quenched at 160 ° C. for 15 minutes to prepare a tensile test specimen, followed by end cure-time, viscosity, hardness, Physical property measurement results such as tensile strength, elongation, and thermal conductivity are shown in Table 2 below.
<표 2> 물성측정 결과<Table 2> Property Measurement Results
상기 표 2에서 보는 바와 같이, 본 발명에 의한 가류 브레다용 고무조성물은 종래의 고무조성물에 비하여 내열 및 내노화 특성을 그대로 유지하면서 내굴곡특성 및 열전도 성능이 현격히 향상되었음을 알 수 있다.As shown in Table 2, the rubber composition for vulcanization Breda according to the present invention can be seen that the bending resistance and thermal conductivity performance is significantly improved compared to the conventional rubber composition while maintaining the heat and aging resistance.
<시험예 2><Test Example 2>
상기 실시예 1 내지 실시예 2 및 비교예에서 제조한 고무조성물을 적용하여 제조한 브레다의 노화, 구르브 크랙(grove crack), 뜯김, 파스 및 총 평균수명 등을 평가한 결과를 하기의 표 3에 나타내었다.The results of evaluating the aging of the Breda manufactured by applying the rubber composition prepared in Examples 1 to 2 and Comparative Examples, grove crack, tearing, pars and total life expectancy, etc. Shown in
<표 3> 브레다 평가결과<Table 3> Evaluation Results of Breda
상기 표 3에서 보는 바와 같이 본 발명에 의한 가류 브레다용 고무조성물은 종래의 고무조성물에 비하여 크랙, 뜯김과 파스에 의한 발생률이 현격히 줄어들고 수명은 20% 이상 연장되는 효과를 보이고 있다. As shown in Table 3, the rubber composition for vulcanization Breda according to the present invention shows an effect that the incidence rate due to cracks, tears, and pars is significantly reduced, and the life is extended by 20% or more, compared to the conventional rubber composition.
본 발명에 의한 고무조성물에 의하면 원료고무인 브롬화 이소부틸렌-파라메틸렌 부틸고무의 비정형성인 구조적 특성으로 인하여 내열 및 내노화 특성을 그대로 유지하면서 내굴곡특성 및 열전도능이 향상된 가류 브레다용 고무조성물을 제공할 수 있다.According to the rubber composition according to the present invention, due to the amorphous structural properties of isobutylene-paramethylene butyl rubber, which is a raw material rubber, it is possible to provide a rubber composition for vulcanizing bred with improved heat resistance and aging resistance while maintaining heat resistance and aging resistance. Can be.
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| KR20050050394A (en) | 2005-05-31 |
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