KR20190081930A - A composite of rubber for transmissin cap - Google Patents
A composite of rubber for transmissin cap Download PDFInfo
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- KR20190081930A KR20190081930A KR1020170184800A KR20170184800A KR20190081930A KR 20190081930 A KR20190081930 A KR 20190081930A KR 1020170184800 A KR1020170184800 A KR 1020170184800A KR 20170184800 A KR20170184800 A KR 20170184800A KR 20190081930 A KR20190081930 A KR 20190081930A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
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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
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
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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
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1087—Materials or components characterised by specific uses
- C09K2003/109—Crown caps
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0607—Rubber or rubber derivatives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09K2200/0617—Polyalkenes
- C09K2200/062—Polyethylene
Abstract
Description
본 발명은 변속기 캡용 고무 오링의 고무 조성물에 관한 것으로서, 보다 상세하게는 차량의 변속기에 사용되는 오링의 고무 조성물에 관한 것이다. The present invention relates to a rubber composition of a rubber O-ring for a transmission cap, and more particularly to a rubber composition of an O-ring used in a transmission of a vehicle.
자동변속기는 자동차나 모터사이클의 변속 기구의 일종으로 차량의 속도나 엔진 회전수에 따라 변속비를 자동적으로 바꾸는 기능을 갖춘 변속기를 의미한다. An automatic transmission is a kind of transmission mechanism of an automobile or a motorcycle, and means a transmission having a function of automatically changing the transmission ratio according to the vehicle speed or the engine speed.
상기 자동 변속기에는 오일이 순환하고 있고, 이들 오일이 외부로 누수되는 것을 방지하도록 오링(O-ring) 또는 디링(D-ring) 등의 고무가 포함된다. 상기 오링 및 디링은 샤프트 홈에 조립되어 습동면과의 압착에 의해 접촉되면서 밀폐력을 가진다. The automatic transmission is circulated with oil, and rubber such as an O-ring or a D-ring is included to prevent the oil from leaking to the outside. The O-ring and the dingling are assembled in the shaft groove, and are brought into contact with each other by the pressing contact with the sliding contact surface, thereby having a sealing force.
상기 자동변속기에 적용되는 고무는, 카본블랙을 충진보강제로 사용한 아크릴 고무가 주로 사용되고 있다. 상기 아크릴 고무는 아크릴산 알킬에스터가 들어 있는 중합체로서, 내열성 및 내유성이 우수하다는 장점이 있다. 그러나 이 경우, 내유성이 떨어진다는 문제점이 있다.The rubber used for the automatic transmission is mainly an acrylic rubber using carbon black as a filler reinforcing agent. The acrylic rubber is a polymer containing an alkyl acrylate ester, and is excellent in heat resistance and oil resistance. In this case, however, there is a problem that oil resistance is deteriorated.
한편, 최근 자동 변속기의 종류가 증가하면서, 오링 또는 디링의 종류 또한 많아지게 되고, 이에 따라서 모양이나 크기가 유사한 고무 제품들이 적용된다. 이에 따라서, 자동변속기의 각 구성부품에 적용되는 고무 제품 간에 혼동이 발생할 가능성이 있다. On the other hand, with the recent increase in the number of automatic transmissions, the number of types of o-rings or dings increases, and rubber products having similar shapes and sizes are applied accordingly. Accordingly, there is a possibility that confusion may occur between the rubber products applied to the respective components of the automatic transmission.
특히, 상기 고무 제품의 고무 조성물에서 충진보강제로 카본 블랙을 사용하는데, 상기 카본 블랙은 흑색으로서 이로 인하여 고무가 착색을 띠게 하거나 백색을 가지도록 할 수 없어서, 이를 구별하기가 더욱 어렵다. Particularly, carbon black is used as a filler reinforcing agent in the rubber composition of the above rubber product, because the carbon black is black, which makes it difficult to distinguish the rubber because it can not be colored or has a white color.
이런 문제점을 해결하기 위하여, 고무 제품을 유색을 띠도록 충진보강제를 카본 블랙 대신, 실리카 소재의 화이트 카본이나, 탄산칼슘 등을 적용할 수 있다. In order to solve such a problem, instead of the carbon black as the filler reinforcing agent for coloring the rubber product, white carbon of silica, calcium carbonate and the like can be applied.
그런데, 상기 화이트 카본 등은 카본 블랙보다 기계적 물성치가 떨어지기 때문에, 운동하는 제품에는 적용하기가 부적합하다.However, since the white carbon has a lower mechanical property than carbon black, it is unsuitable to apply to a moving product.
본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로서, 유색을 가짐과 동시에 우수한 내유성을 가지는 변속기 캡용 오링의 고무 조성물을 제공하는 것을 목적으로 한다. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a rubber composition for an O-ring for a transmission cap having a color and excellent oil resistance.
따라서, 본 발명의 변속기용 오링의 고무 조성물은, 에틸렌아크릴 중합체(AEM)로 이루어진 폴리머; Accordingly, the rubber composition of the O-ring for a transmission according to the present invention comprises a polymer composed of an ethylene acrylic polymer (AEM);
상기 폴리머 100 중량부 대비, 30 내지 80 중량부를 가지는 실리카계 충진 보강제; 및 실리카커플링제_(AMEO)을 포함한다.A silica-based filler reinforcing agent having 30 to 80 parts by weight based on 100 parts by weight of the polymer; And silica coupling agent (AMEO).
상기 첨가제는 폴리머 100중량부에 대하여 1 내지 10 의 중량부를 갖는 것이 바람직하다. The additive preferably has 1 to 10 parts by weight based on 100 parts by weight of the polymer.
상기와 같은 구성을 가지는 본 발명에 의하면, 내유성이 향상되고, 보강성이 유지됨과 동시에 유색 발현이 되는 변속기 캡용 오링이 제작될 수 있다. According to the present invention having the above-described structure, an o-ring for a transmission cap which is improved in oil resistance, maintains its reinforcing property and exhibits a colored appearance can be manufactured.
이하, 본 발명인 변속기 캡용 오링의 고무 조성물의 바람직한 일 실시예를 상세하게 설명한다.Hereinafter, a preferred embodiment of the rubber composition of the O-ring for a transmission cap of the present invention will be described in detail.
본 발명의 바람직한 실시예에 따른 변속기 캡용 오링의 고무 조성물은, 에틸렌아크릴 중합체(AEM)로 이루어진 폴리머와, 상기 폴리머 100 중량부 대비, 30 내지 80 중량부를 가지는 실리카계 충진 보강제를 포함한다.The rubber composition of the O-ring for a transmission cap according to a preferred embodiment of the present invention includes a polymer composed of ethylene acrylic polymer (AEM) and a silica-based filler reinforcing agent having 30 to 80 parts by weight relative to 100 parts by weight of the polymer.
에틸렌아크릴 중합체는 에틸렌과 메틸 아크릴의 중합체로 소량의 카복실기의 경화부위를 가진 단성체를 함유하고 있다. AEM은 일종의 단단하고 저압축영구변형의 고무로 고온, 고온의 광물유, 유체와 기후에 대해 극히 양호한 저항성을 갖는다. 상기 에틸렌아크릴 중합체는 특히 내유성이 우수하다. The ethylene acrylic polymer is a polymer of ethylene and methyl acrylate and contains monomers having a cure site of a small amount of carboxyl groups. AEM is a kind of rigid, low compression set rubber with very good resistance to high temperature, high temperature mineral oil, fluid and weather. The ethylene acrylic polymer is particularly excellent in oil resistance.
충진보강제는 폴리머의 접착성을 향상시키고, 고무를 증량하며, 가공성 및 보강성을 높이기 위한 것이다. 본 발명에서 충진보강제로 실리카계 소재를 사용한다. 실리카계 소재는 무색 또는 백색의 색깔을 가진다. 이에 따라서, 적절한 안료를 선택하여 배합하면 에틸렌아크릴 고무가 유색을 가지게 될 수 있다. The filler reinforcer is to improve the adhesion of the polymer, to increase the rubber, and to improve workability and reinforcement. In the present invention, a silica-based material is used as a filler reinforcing agent. The silica-based material has a colorless or white color. Accordingly, when an appropriate pigment is selected and blended, the ethylene acrylic rubber may become colored.
종래에는 기계적 물성치를 만족시키기 위하여, 충진보강제로 카본 블랙을 적용하였으나, 이 경우에는 카본 블랙이 검은색으로서 안료를 혼합하더라도 고무가 유색을 띨 수가 없다. Conventionally, in order to satisfy the mechanical properties, carbon black is applied as a filler reinforcing agent. In this case, the carbon black is black and the rubber can not be colored even when the pigment is mixed.
본 발명에 따르면, 충진보강제로 카본 블랙을 사용하지 않고, 실리카계를 사용하여서, 안료를 첨가하여 고무가 유색을 갖게 할 수 있다. 이 경우, 충진보강제로 실리콘 디옥사이드(SiO2)인 것이 보다 바람직한데, 이는 실리콘 디옥사이드가 색상을 부여하기 쉬울 뿐만 아니라, 기계적 물성 보강력이 우수하기 때문이다. According to the present invention, it is possible to make a rubber colored by adding a pigment by using a silica system instead of carbon black as a filler reinforcing agent. In this case, silicon dioxide (SiO 2 ) is more preferable as a filler reinforcing agent because it is easy to impart color to silicon dioxide and has excellent mechanical properties.
이 경우, 상기 충진보강제는 폴리머 100 중량부에 대하여 30 내지 80 중량부를 가지는 것이 바람직하다. 만약 중량부가 80 중량부를 초과하면 컴파운드 배합 가공이 어려워져 분산성이 열화되고, 중량부가 30 미만인 경우 기계적 물성이 떨어지기 때문이다.
In this case, it is preferable that the filler is 30 to 80 parts by weight based on 100 parts by weight of the polymer. If the weight is more than 80 parts by weight, the compounding becomes difficult and the dispersibility is deteriorated. If the weight part is less than 30, the mechanical properties are deteriorated.
가류제는 혼련된 고무가 적정 온도로 가열될 때 상기 폴리머를 구성하는 단량체들을 상호 가교하는 기능을 한다. 상기 가류제는 아민계 가류제(FD-10)를 적용할 수 있다. 이는 _Hexamethylene diamine carbamate이기 때문이다. 이 경우, 상기 가류제의 함유량은 폴리머 100 중량부에 대하여 1 내지 5 중량부인 것이 바람직하다. The vulcanizing agent functions to cross-link the monomers constituting the polymer when the kneaded rubber is heated to an appropriate temperature. The vulcanizing agent may be an amine vulcanizing agent (FD-10). This is because it is _Hexamethylene diamine carbamate. In this case, the content of the vulcanizing agent is preferably 1 to 5 parts by weight based on 100 parts by weight of the polymer.
한편, 본 발명의 오링의 고무조성물은 노화 방지제와, 가공조제를 더 포함할 수 있다. On the other hand, the rubber composition of the O-ring of the present invention may further comprise an anti-aging agent and a processing aid.
노화 방지제(antioxidant)는 유기고분자 재료의 노화를 방지하는 역할을 한다. 노화방지제는 산화방지제와 같은 작용을 갖는 것이 많기 때문에 산화방지제라고도 한다. 노화방지제는 노화현상의 주요 인자인 산소에 의해서 자동 산화되는 연쇄반응을 정지시키는 작용을 한다. Antioxidants prevent aging of organic polymeric materials. Antioxidants are often referred to as antioxidants because they often have the same action as antioxidants. Antioxidants act to stop the chain reaction, which is autoxidized by oxygen, a major factor in the aging process.
본 발명에서는 노화 방지제로 ANOX 405 로 이루어질 수 있다. In the present invention, ANOX 405 may be used as an antioxidant.
이는 4-4'-Bis(4-α,α'-dimethyl benzyl) diphenlamine 이기 때문이다. 이 경우, 상기 노화방지제 함유량은 폴리머 100 중량부에 대하여 1 내지 5 중량부인 것이 바람직하다. This is because it is 4-4'-Bis (4-α, α'-dimethyl benzyl) diphenlamine. In this case, the content of the antioxidant is preferably 1 to 5 parts by weight based on 100 parts by weight of the polymer.
가교조제는 폴리머의 가교 속도를 증가시키는 한편, 측쇄(side chain) 반응을 방지하여 가교 밀도를 증가시키기 위한 것이다. 상기 가교조제로서 __Tertiary amine complexabsorbed on a silica carrier(act 55)을 포함할 수 있다. 이 경우, 상기 가교조제 함유량은 폴리머 100 중량부에 대하여 1 내지 5 중량부인 것이 바람직하다. The crosslinking aids are intended to increase the crosslinking speed of the polymer while preventing side chain reactions to increase the crosslinking density. The crosslinking assistant may include a tertiary amine complexesorbed on a silica carrier (act 55). In this case, the content of the crosslinking aid is preferably 1 to 5 parts by weight based on 100 parts by weight of the polymer.
본 발명에 따르면, 충전제를 실리카계를 적용하고 안료를 첨가함으로써, ACM 고무제품이 유채색을 띨 수 있게 된다. 또한, 아미노실란을 결합제로 사용하여서, 폴리머 및 충전제 사이를 단단히 결합시킴으로써 기계적 물성치가 향상된다.
According to the present invention, by applying a silica-based filler and adding a pigment, the ACM rubber product can be colored. Further, by using aminosilane as a bonding agent, bonding between the polymer and the filler is tightly bonded, the mechanical properties are improved.
이하에서는, 상기와 같은 본 발명의 실시예에 따른 변속기용 오링 고무 조성물(이하 편의상 "실시예"라고 칭함.)을 본 발명의 첨가제를 적용하지 않은 변속기용 오링 고무 조성물(이하, 편의상 "비교예"라고 칭함.)간의 성질을 각종 테스트하여 서로 비교함으로써, 상기 효과를 더욱 명확하게 설명한다.Hereinafter, the oily rubber composition for a transmission according to the embodiment of the present invention (hereinafter referred to simply as " the embodiment "for the sake of convenience) Quot;) are tested and compared with each other to explain the above effect more clearly.
표 1은 상기 각종 테스트에 적용되는 실시예 및 비교예의 구성성분을 비교하여 나타낸 표이다. Table 1 shows the comparison between the components of Examples and Comparative Examples applied to the various tests.
실시예와 비교예는 첨가제를 제외하고는 조성물을 동일하게 하였다. In the Examples and Comparative Examples, the composition was the same except for the additives.
Filler
47
0
10
0
Cross-linking agent
0
20
0
12
3
0.8
0
0.7
2
2
additive
2. FEF : 동양제철화학
3. NIPSILE74P : 日本SILICA
4. DOTG : R.T VANDERBILT
5. ACT-55 : Safic alcan
6. FD-10 : EWOL Technology
7. AMEO : EVONIC
8. Green 5605 : 덕신피그먼트
1. Vamac: Vamac Ultra IP, Dupont
2. FEF: Dongyang Steel Chemical
3. NIPSILE74P: Japan SILICA
4. DOTG: RT VANDERBILT
5. ACT-55: Safic alcan
6. FD-10: EWOL Technology
7. AMEO: EVONIC
8. Green 5605: Deokshin Pigment
표 2는 실시예와 비교예에 대한 기계적물성치와 내유성 및 저온물성시험을 행한 결과를 나타낸다. 이 경우, 경도 시험, 100%모듈러스, 신율 및 인장강도 시험은 각각 KS M 6518의 규격을 만족하였다. Table 2 shows mechanical properties, oil resistance and low-temperature properties of the examples and comparative examples. In this case, the hardness test, the 100% modulus, the elongation and the tensile strength tests satisfied the specifications of KS M 6518, respectively.
또한, 내유성 시험은 150℃의 변속기유(HP CVTF) 내에 70시간 담근 후에 각각의 변화를 검사하였다. 저온 물성은 탄성을 유지하는 온도를 측정하였다. Also, the oil resistance test was carried out after immersing in a transmission oil (HP CVTF) at 150 ° C for 70 hours, and each change was examined. The low temperature properties were measured to maintain the elasticity.
표 2에 도시된 바와 같이, 실시예가 비교예보다 기계적 물성치가 비슷하거나 우수하다. As shown in Table 2, the mechanical properties of the examples are similar to or better than those of the comparative examples.
또한, 내유성의 경우, 실시예에 현저하게 우수함을 알 수 있고, 저온 물성 또한 -27℃로서 비교예의 -21℃보다 현저하게 낮아서 저온물성이 우수함을 알 수 있다. It can be seen that the oil resistance is remarkably excellent in Examples, and the low temperature property is also -27 deg. C, which is remarkably lower than -21 deg. C in the comparative example, so that the low temperature property is excellent.
상술한 바와 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만 해당 기술분야의 숙련된 당업자라면 하기의 청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다. Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that
Claims (2)
상기 폴리머 100 중량부 대비, 30 내지 80 중량부를 가지는 실리카계 충진 보강제 및 실리카커플링제_(AMEO)을 구비하는 변속기 캡용 오링의 고무 조성물. A polymer composed of an ethylene acrylic polymer (AEM);
A rubber-based filler reinforcing agent having 30 to 80 parts by weight relative to 100 parts by weight of the polymer; and a silica coupling agent (AMEO).
상기 첨가제는 폴리머 100중량부에 대하여 중량부를 갖는 것을 특징으로 하는 변속기 캡용 오링의 고무 조성물. The method according to claim 1,
Wherein the additive has a weight per 100 parts by weight of the polymer.
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