KR100314754B1 - Natural Rubber Based Compound for Tire Having Improved Reversion Resistance - Google Patents
Natural Rubber Based Compound for Tire Having Improved Reversion Resistance Download PDFInfo
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- KR100314754B1 KR100314754B1 KR1019990023324A KR19990023324A KR100314754B1 KR 100314754 B1 KR100314754 B1 KR 100314754B1 KR 1019990023324 A KR1019990023324 A KR 1019990023324A KR 19990023324 A KR19990023324 A KR 19990023324A KR 100314754 B1 KR100314754 B1 KR 100314754B1
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- South Korea
- Prior art keywords
- natural rubber
- rubber
- rubber composition
- present
- citraconimidomethyl
- Prior art date
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- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 21
- 229920003052 natural elastomer Polymers 0.000 title claims abstract description 21
- 229920001194 natural rubber Polymers 0.000 title claims abstract description 21
- 150000001875 compounds Chemical class 0.000 title 1
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 239000005060 rubber Substances 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 24
- MIIBUHIQXLFJFP-UHFFFAOYSA-N 3-methyl-1-[[3-[(3-methyl-2,5-dioxopyrrol-1-yl)methyl]phenyl]methyl]pyrrole-2,5-dione Chemical compound O=C1C(C)=CC(=O)N1CC1=CC=CC(CN2C(C(C)=CC2=O)=O)=C1 MIIBUHIQXLFJFP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims 1
- 238000004073 vulcanization Methods 0.000 abstract description 5
- 238000010059 sulfur vulcanization Methods 0.000 abstract 1
- 230000000704 physical effect Effects 0.000 description 17
- 230000032683 aging Effects 0.000 description 6
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FOBUIZYJIZIDBY-UHFFFAOYSA-N 3-methyl-1-[[2-[(3-methyl-2,5-dioxopyrrol-1-yl)methyl]phenyl]methyl]pyrrole-2,5-dione Chemical compound O=C1C(C)=CC(=O)N1CC1=CC=CC=C1CN1C(=O)C(C)=CC1=O FOBUIZYJIZIDBY-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LJOPFCHCRGVYCR-UHFFFAOYSA-N [C].[C].[S] Chemical compound [C].[C].[S] LJOPFCHCRGVYCR-UHFFFAOYSA-N 0.000 description 1
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 125000002228 disulfide group Chemical group 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/1413—Post-and-rail fences, e.g. without vertical cross-members
- E04H17/1417—Post-and-rail fences, e.g. without vertical cross-members with vertical cross-members
- E04H17/1426—Picket fences
Abstract
본 발명은 천연고무의 리버젼(Reversion) 현상이 개선된 타이어용 고무조성물에 관한 것이다. 종래의 천연고무를 주로 하는 고무조성물의 유황 가류제품은 고온 과가류를 하면 폴리설파이드 형태의 결합이 분해되어 모노설파이드 또는 다이설파이드 형태의 결합으로 가교 형태가 변하는 리버젼(Reversion)이 일어나게 된다.The present invention relates to a rubber composition for tires with improved reversion of natural rubber. The sulfur vulcanization product of the rubber composition mainly made of natural rubber is subjected to high temperature super-vulcanization, so that the polysulfide-type bonds are decomposed and the cross-linked forms are changed by the monosulfide or disulfide-type bonds.
본 발명은 천연고무를 주로 하는 고무조성물에 1,3-비스(시트라콘이미도메틸)벤젠의 가류제를 적량 배합하여 사용함으로써, 제반 물성의 경우 기존의 경우와 거의 유사하게 나타나면서도 리버젼 특성은 크게 개선되는 장점이 있다.The present invention uses a suitable amount of a vulcanizing agent of 1,3-bis (citraconimidomethyl) benzene in a rubber composition mainly made of natural rubber, so that the properties of the reversion are almost similar to those of the conventional case. There is a significant improvement.
Description
본 발명은 천연고무의 리버젼(Reversion) 현상이 개선된 타이어용 고무조성물에 관한 것이다. 천연고무를 주로 사용하는 고무조성물의 유황 가류제품은 고온 과가류를 하면 고무 물성이 적정가류시 보다 하락하고, 제품을 사용하여 노화가 진행되면 초기 물성이 하락하는 현상이 발생한다.The present invention relates to a rubber composition for tires with improved reversion of natural rubber. Sulfur vulcanized products of rubber composition, which mainly use natural rubber, have high physical and super-vulcanization, and rubber properties are lower than that of proper vulcanization.
천연고무를 주로 사용하는 고무조성물을 고온으로 과가류를 하면 폴리설파이드 형태의 결합이 분해되어 모노설파이드 또는 다이설파이드 형태의 결합으로 가교 형태가 변하게 되어 초기물성이 예상치에 못 미치는 문제가 발생하게 되고, 천연고무를 주로 하는 고무조성물로 이루어진 제품을 사용하면 노화가 진행되어 고무의 물성이 하락하는 문제가 있다.If the rubber composition, which mainly uses natural rubber, is subjected to excessively high temperature, polysulfide-type bonds are decomposed and the cross-linked form is changed by the bonds of monosulfide or disulfide forms, resulting in problems that the initial properties are not as expected. When using a product made of a rubber composition mainly made of natural rubber, there is a problem in that the physical properties of the rubber decreases due to aging.
천연고무를 주로 사용하는 고무조성물을 고온으로 과가류를 하면 폴리설파이드 형태의 결합이 분해되어 모노설파이드 또는 다이설파이드 형태의 결합으로 가교 형태가 변하게 된다. 이런 형상을 리버젼(Reversion)이라 하는데 천연고무의 경우 이중결합 주위에 메틸기가 많아 이러한 물성하락 현상이 발생하게 된다. 이러한 현상은 제품을 사용하게 되면 노화가 진행되어 물성이 하락하게 되는 것과 마찬가지의 현상인 것이다. 본 발명자는 종래기술이 지니는 상기의 문제점을 해결하는 방안을 연구하던 중 리버젼 현상이 발생하는 조건에서 활성화되어 천연고무간의 탄소-탄소 결합을 가능케 하는 약품을 첨가하여 주면 고무의 물성하락을 방지할 수 있다는 사실을 발견하고 본 발명을 완성하였다.When the rubber composition, which mainly uses natural rubber, is subjected to over-curing at high temperature, the polysulfide-type bond is decomposed and the cross-linked form is changed by the monosulfide or disulfide-type bond. This shape is called reversion, and in the case of natural rubber, there are many methyl groups around the double bond, which causes such property deterioration. This phenomenon is the same as when the product is used, the aging progresses and the physical properties decrease. The inventors of the present invention, while studying a solution to the above problems with the prior art is activated under the conditions of the reversion phenomenon occurs by adding a chemical that enables the carbon-carbon bond between natural rubber to prevent the physical properties of the rubber It was found that the invention can be completed the present invention.
따라서 본 발명의 목적은 리버젼 현상이 발생하는 조건에서 활성화되어 천연고무간의 탄소-탄소 결합을 가능케 하는 약품으로서, 1,3-비스(시트라콘이미도메틸)벤젠의 구조를 갖는 가류제를 사용하여 고무물성 하락이 방지된 고무 조성물을 제공하는 데에 있다.Accordingly, an object of the present invention is to use a vulcanizing agent having a structure of 1,3-bis (citraconimidomethyl) benzene as a drug that is activated under the conditions under which the reversion phenomenon occurs to enable carbon-carbon bonds between natural rubbers. It is to provide a rubber composition prevented from falling rubber properties.
본 발명은 기존의 천연고무 조성물에 과가류 조건이나, 제품의 노화시에 활성화되어 폴리머간 체인을 결합할 수 있는 1,3-비스(시트라콘이미도메틸)벤젠의 구조를 갖는 가류제를 사용하여 고무물성 하락을 방지하는 고무 조성물에 관한 것이다.The present invention uses a vulcanizing agent having a structure of 1,3-bis (citraconimidomethyl) benzene that can be activated at the time of aging of the product to the existing natural rubber composition or at the time of aging of the product. It relates to a rubber composition to prevent the rubber properties decline.
본 발명에 사용된 천연고무의 물성하락 방지용 가류제인 1,3-비스(시트라콘이미도메틸)벤젠의 구조는 하기 구조식에 나타낸 바와 같다. 하기 구조식의 가류제는 천연고무 조성물의 고온 과가류시 또는 제품의 사용에 의해 노화가 진행될 때 폴리설파이드 형태의 결합이 분해되는 조건에서 활성화되어 디엘스알더 반응 메카니즘에 의해 카본 체인과 카본-카본 결합 형태를 이루게 된다.The structure of 1,3-bis (citraconimidomethyl) benzene, which is a vulcanizing agent for preventing physical property fall of natural rubber used in the present invention, is as shown in the following structural formula. The vulcanizing agent of the following structural formula is activated under the condition that the dissociation of the polysulfide form bonds at the time of hot vulcanization of the natural rubber composition or when aging is progressed by the use of the product, and the carbon chain and carbon-carbon are It will be combined.
결합 파괴시에 요구되는 활성화 에너지는 황-황, 카본-황-카본보다 카본-카본의 결합이 가장 높으므로 과가류시 또는 노화시에 천연고무의 물성하락을 방지할 수 있다.The activation energy required at the time of bond breakage is the highest carbon-carbon bond than sulfur-sulfur and carbon-sulfur-carbon, so that physical properties of natural rubber can be prevented during over-curing or aging.
본 발명에 적용가능한 1,3-비스(시트라콘이미도메틸)벤젠의 첨가량은 천연고무 100 중량부를 기준으로 하여 0.5∼2.0 중량부가 바람직하며, 0.5 중량부 미만에서는 분산 상태에 따라 물성 개선 효과에서 차이가 나고, 2.0 중량부를 넘게되면 물성효과에 별다른 변화가 없이 비용만 증가하게 되어 바람직하지 않다.The addition amount of 1,3-bis (citraconimidomethyl) benzene applicable to the present invention is preferably 0.5 to 2.0 parts by weight based on 100 parts by weight of natural rubber, and less than 0.5 parts by weight is different in the physical properties improvement effect depending on the dispersion state. If more than 2.0 parts by weight, it is not desirable to increase only the cost without any change in the physical properties.
이하 본 발명의 내용을 실시예에 의해 상세히 설명하고자 하나, 본 발명의 권리범위가 이들 실시예에 한정되지는 아니한다.Hereinafter, the contents of the present invention will be described in detail by way of examples, but the scope of the present invention is not limited to these examples.
< 실시예 1 ><Example 1>
다음의 표 1에 제시된 배합비와 같이 천연고무, 가류활성제, 보강제로 카본블랙, 점착제, 접착제, 노화방지제, 연화제, 가류제, 촉진제, 지연제로 구성된 고무조성물에 본 발명의 내용을 구성하는 1,3-비스(시트라콘이미도메틸)벤젠 0.5 중량부를 밴버리 믹서에서 배합하고 160℃의 온도에서 방출하였다.1,3 constituting the contents of the present invention in a rubber composition composed of carbon black, pressure-sensitive adhesive, adhesive, anti-aging agent, softener, vulcanizing agent, accelerator, and retarder as the compounding ratio shown in the following Table 1 0.5 parts by weight of bis (citraconimidomethyl) benzene was blended in a Banbury mixer and released at a temperature of 160 ° C.
생성된 고무의 물리적 특성을 ASTM 표준방법에 의해 측정하였는데, 고무의 배합조성비 및 물리적 특성시험 결과를 표 1에 나타내었다.The physical properties of the resulting rubber were measured by the ASTM standard method, and the mixing ratio and physical property test results of the rubber are shown in Table 1.
< 실시예 2 ><Example 2>
1,3-비스(시트라콘이미도메틸)벤젠을 1.0 중량부 첨가하는 것을 제외하고는 실시예 1에서와 동일하게 실시하여 고무를 제조하였는 바, 그 고무조성물의 배합조성비 및 물리적 특성시험 결과를 표 1에 나타내었다.Except for adding 1.0 part by weight of 1,3-bis (citraconimidomethyl) benzene was prepared in the same manner as in Example 1 to prepare a rubber, the composition ratio of the rubber composition and physical properties test results 1 is shown.
< 실시예 3 ><Example 3>
1,3-비스(시트라콘이미도메틸)벤젠을 1.5 중량부 첨가하는 것을 제외하고는 실시예 1에서와 동일하게 실시하여 고무를 제조하였는 바, 그 고무의 배합조성비 및 물리적 특성시험 결과를 표 1에 나타내었다.Except for adding 1.5 parts by weight of 1,3-bis (citraconimidomethyl) benzene to prepare a rubber in the same manner as in Example 1, the rubber composition ratio and physical properties test results Table 1 Shown in
< 실시예 4 ><Example 4>
1,3-비스(시트라콘이미도메틸)벤젠을 2.0 중량부 첨가하는 것을 제외하고는 실시예 1에서와 동일하게 실시하여 고무를 제조하였는 바, 그 고무의 배합조성비 및 물리적 특성시험 결과를 표 1에 나타내었다.Except that the addition of 2.0 parts by weight of 1,3-bis (citraconimidomethyl) benzene was prepared in the same manner as in Example 1 to prepare a rubber, the composition ratio of the rubber and physical properties test results Table 1 Shown in
< 비교예 ><Comparative Example>
1,3-비스(시트라콘이미도메틸)벤젠을 첨가하지 않는 것을 제외하고는 실시예 1에서와 동일하게 실시하여 고무를 제조하였는 바, 그 고무의 배합조성비 및 물리적 특성시험 결과를 표 1에 나타내었다.Except that 1,3-bis (citraconimidomethyl) benzene was not added to prepare a rubber in the same manner as in Example 1, the rubber composition ratio and physical properties test results are shown in Table 1. It was.
< 표 1 > 고무조성물의 배합조성비 및 물리적 특성시험결과.<Table 1> Combination composition ratio and physical property test results of rubber composition.
(단위: 중량부)(Unit: parts by weight)
* BSIB: 1,3-비스(시트라콘이미도메틸)벤젠* BSIB: 1,3-bis (citraconimidomethyl) benzene
상기 표 1에서 볼 수 있듯이 본 발명에서 사용한 재료를 비교예 대비 사용량을 늘려가며 물성을 평가한 결과 가류특성은 거의 변화가 없는 결과를 볼 수 있었다. 제반 물성의 경우 기존의 경우와 거의 유사하게 나타났고 예측된 바와 같이 리버젼 특성은 크게 개선이 되었다.As can be seen in Table 1, as the results of evaluating the physical properties of the material used in the present invention compared to the comparative example, the vulcanization characteristics were almost unchanged. In general, the physical properties were almost similar to the existing cases, and as expected, the revision characteristics were greatly improved.
본 발명에 의하면 천연고무를 주로하는 고무조성물에 1,3-비스(시트라콘이미도메틸)벤젠의 가류제를 적량 배합하여 사용하면, 제반 물성의 경우 기존의 경우와 거의 유사하게 나타나면서도 리버젼 특성은 크게 개선되는 효과가 있다. 따라서 본 발명의 고무조성물은 물성 하락을 방지하여 타이어의 수명을 연장하고 또한 제품성능을 향상시킬 수 있는 장점을 가진다.According to the present invention, when a suitable amount of a vulcanizing agent of 1,3-bis (citraconimidomethyl) benzene is used in a rubber composition mainly containing natural rubber, the properties of the reversion are almost similar to those of the conventional case. Has the effect of greatly improving. Therefore, the rubber composition of the present invention has the advantage of preventing the deterioration of physical properties to extend the life of the tire and also improve the product performance.
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| KR1019990023324A KR100314754B1 (en) | 1999-06-21 | 1999-06-21 | Natural Rubber Based Compound for Tire Having Improved Reversion Resistance |
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| KR20000025203A (en) * | 1998-10-09 | 2000-05-06 | 홍건희 | Rubber composition with improved high temperature curing property of natural rubber |
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1999
- 1999-06-21 KR KR1019990023324A patent/KR100314754B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000025203A (en) * | 1998-10-09 | 2000-05-06 | 홍건희 | Rubber composition with improved high temperature curing property of natural rubber |
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| Publication number | Publication date |
|---|---|
| KR20010003153A (en) | 2001-01-15 |
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