KR100479661B1 - The teatcup liner compound with improved durability for milking machine - Google Patents

The teatcup liner compound with improved durability for milking machine Download PDF

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KR100479661B1
KR100479661B1 KR10-2002-0043701A KR20020043701A KR100479661B1 KR 100479661 B1 KR100479661 B1 KR 100479661B1 KR 20020043701 A KR20020043701 A KR 20020043701A KR 100479661 B1 KR100479661 B1 KR 100479661B1
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rubber
parts
weight
milking machine
liner
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KR10-2002-0043701A
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Korean (ko)
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KR20040009684A (en
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이채용
이정길
박형련
김명선
이정치
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이정길
이채용
박형련
김명선
이정치
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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
    • C08L7/00—Compositions of natural rubber
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/06—Milking pumps
    • A61M1/062—Pump accessories
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • 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
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • 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
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

본 발명은 내구성이 향상된 착유기 유두컵용 라이너 고무조성물에 관한 것이다.The present invention relates to a rubber composition for liner teat cups with improved durability.

본 발명은 천연고무(NR), 에틸렌프로필렌디엔고무(EPDM) 및 부틸고무(Butyl rubber)의 혼합고무를 원료고무로 사용하여 우수한 내유성능을 유지하면서 내구성이 향상된 착유기 유두컵용 라이너 고무조성물의 제공을 목적으로 한다.The present invention uses a mixed rubber of natural rubber (NR), ethylene propylene diene rubber (EPDM) and butyl rubber (raw rubber) as a raw material rubber to maintain the excellent oil resistance performance while providing improved durability of the milking machine teat cup liner rubber composition The purpose.

본 발명의 착유기 유두컵용 라이너 고무조성물은 공지의 착유기 유두컵용 라이너 고무조성물에 있어서, 천연고무(NR) 50∼60 중량부 및 5-에틸리덴-2-노르보르넨이 5% 미만 함유된 에틸렌프로필렌디엔고무(EPDM)와 브롬(bromine) 함량이 2.0∼2.5몰%인 부틸고무(Butyl rubber)가 2.5 : 7.5 ∼ 7.5 : 2.5의 비율로 혼합된 합성고무 40∼50 중량부가 혼합된 고무를 원료고무로 사용하는 것을 특징으로 한다.The milking machine teat cup liner rubber composition of the present invention is a known milking machine teat cup liner rubber composition comprising 50 to 60 parts by weight of natural rubber (NR) and less than 5% of 5-ethylidene-2-norbornene. Synthetic rubber containing 40 to 50 parts by weight of synthetic rubber mixed with diene rubber (EPDM) and butyl rubber having a bromine content of 2.0 to 2.5 mol% at a ratio of 2.5: 7.5 to 7.5: 2.5 It is characterized by using as.

Description

내구성이 향상된 착유기 유두컵용 라이너 고무조성물{The teatcup liner compound with improved durability for milking machine}The teatcup liner compound with improved durability for milking machine}

본 발명은 내구성이 향상된 착유기 유두컵용 라이너 고무조성물에 관한 것이다.The present invention relates to a rubber composition for liner teat cups with improved durability.

젖소로부터 우유를 착유하는 장치인 착유기는 일반적으로 진공 발생 장치, 진공조절기, 진공계기, 맥동기, 밀크크로우, 라이너, 밀크라인 및 진공라인으로 이루어져 있다.Milking machines, which are milking milk from cows, generally consist of a vacuum generator, a vacuum regulator, a vacuum gauge, a pulsator, a milk crow, a liner, a milk line and a vacuum line.

이중 라이너는 젖소의 유두와 직접 접촉되는 유일한 부위로 유두조로부터 우유를 직접 배출시켜주는 통로 역할을 하는 것으로서 라이너는 착유기의 유두컵에 꼭 맞는 것으로 맞춤선에 따라 똑바로 끼워져야 하며 젖소의 유두에 따라 여러가지 모양의 것을 사용하고 있으나 통상 내경이 22㎜ 이하인 것을 사용하는 것이 바람직한데 그렇지 못할 경우 진공압이 계속해서 유두를 자극하여 유두 괄약근이 손상되는 문제가 있다. 또한 라이너가 노후화된 것은 탄력성이 저하되고 라이너 내벽의 틈새로 세균이 번식하여 젖소의 유방염 발생 가능성의 증가와 우유품질 저하의 원인이 된다.The double liner is the only part that is in direct contact with the cow's nipple, and serves as a direct outlet for the milk from the nipple tank. The liner fits the nipple cup of the milking machine and should fit straight along the alignment line. Although various shapes are used, it is generally preferable to use an inner diameter of 22 mm or less. If not, there is a problem in that the vacuum pressure continues to stimulate the nipple and damage the nipple sphincter. In addition, the liner is to breed a bacterial clearance of the aging is the decrease is too lie inside wall resilient to be the cause of increase in the possibility of bovine mastitis caused and milk quality.

착유기 유두컵용 라이너는 내유성이 우수해야 하고 내오존성능, 내굴곡성능 및 내피로성능이 우수하게 설계되어야 한다. 그러나 종래의 라이너는 아크릴로니트릴부타디엔고무를 주 원료고무로 사용하여 내유성은 우수하지만, 원료고무의 화학적 구조 특성상 오존의 공격에 의한 크랙이 쉽게 발생하고 흡입 및 팽창을 위한 반복굴신에 의해 크랙이 발생하여 제품의 수명이 단축되는 문제가 있다.The milking machine teat cup liner should be excellent in oil resistance and designed to be excellent in ozone resistance, bending resistance and fatigue resistance. However, the conventional liner uses acrylonitrile butadiene rubber as the main raw material rubber, but has excellent oil resistance, but due to the chemical structure of the raw material rubber, cracks easily occur due to ozone attack, and cracks occur due to repeated bending for inhalation and expansion. There is a problem that the life of the product is shortened.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로써, 착유기 유두컵용 라이너 고무조성물의 원료고무를 변경하여 내유성은 종래의 라이너와 동일한 수준으로 유지하면서 내오존성능 및 내굴곡특성을 향상시켜 오존크랙과 반복굴신에 의해 발생하는 크랙을 방지하여 라이너의 내구성을 향상하고자 한다.The present invention has been made to solve the above problems, by changing the raw material rubber of the milking machine teat cup liner rubber composition to improve ozone resistance and bending resistance while maintaining oil resistance at the same level as the conventional liner It is intended to improve the durability of the liner by preventing cracks caused by cracks and repeated bending.

즉, 본 발명은 천연고무(NR), 에틸렌프로필렌디엔고무(EPDM) 및 부틸고무 (Butyl rubber)가 혼합된 것을 원료고무로 사용하여 우수한 내유성능을 유지하면서 내구성이 향상된 착유기 유두컵용 라이너 고무조성물의 제공을 목적으로 한다. That is, the present invention uses a mixture of natural rubber (NR), ethylene propylene diene rubber (EPDM) and butyl rubber (Butyl rubber) as a raw material rubber while maintaining excellent oil resistance performance of the milking machine teat cup liner rubber composition It is for the purpose of providing.

본 발명의 내구성이 향상된 착유기 유두컵용 라이너 고무조성물은 공지의 착유기 유두컵용 라이너 고무조성물에 있어서, 천연고무(NR) 50∼60 중량부 및 합성고무 40∼50 중량부가 혼합된 혼합고무를 원료고무로 사용하는 것을 특징으로 한다.The improved milking machine teat cup liner rubber composition of the present invention is a known milking machine teat cup liner rubber composition, a mixture of 50 to 60 parts by weight of natural rubber (NR) and 40 to 50 parts by weight of synthetic rubber as a raw material rubber It is characterized by using.

상기에서 합성고무는 5-에틸리덴-2-노르보르넨(5-ethylidene-2-norbornene)이 5% 미만 함유된 에틸렌프로필렌디엔고무(EPDM)와 브롬 함량이 2.0∼2.5몰%인 부틸고무(Butyl rubber)가 2.5 : 7.5 ∼ 7.5 : 2.5의 비율로 혼합된 고무를 사용할 수 있다.The synthetic rubber is ethylene propylene diene rubber (EPDM) containing less than 5% of 5-ethylidene-2-norbornene and butyl rubber having a bromine content of 2.0 to 2.5 mol% ( Butyl rubber) can be used mixed rubber of 2.5: 7.5 ~ 7.5: 2.5 ratio.

상기와 같이 원료고무에 있어서 천연고무를 50∼60 중량부 및 5-에틸리디엔-2-노르보르넨이 5% 미만 함유된 에틸렌프로필렌디엔고무와 브롬(bromine) 함량이 2.0∼2.5몰%인 부틸고무가 2.5 : 7.5 ∼ 7.5 : 2.5의 비율로 혼합된 합성고무 40∼50 중량부를 사용하는 이유는 천연고무의 우수한 응력완화, 내마모성, 내인열성 및 내피로성을 기본으로 하고 EPDM의 우수한 내오존성과 부틸고무의 낮은 가스투과성, 내화학성능을 부가하여 천연고무의 약점을 보완하기 위함이다.As described above, 50 to 60 parts by weight of natural rubber and less than 5% of 5-ethylidene-2-norbornene in ethylene propylene diene rubber and bromine content of 2.0 to 2.5 mol% The reason for using 40-50 parts by weight of synthetic rubber mixed with butyl rubber in the ratio of 2.5: 7.5 to 7.5: 2.5 is based on the excellent stress relaxation, abrasion resistance, tear resistance and fatigue resistance of natural rubber. This is to supplement the weakness of natural rubber by adding low gas permeability and chemical resistance of butyl rubber.

한편 본 발명의 착유기 유두컵용 라이너 고무조성물은 상기에서 언급한 원료고무 이외에 보강충진제, 활성제, 유황, 노화방지제, 공정유, 가류촉진제와 같은 공지의 첨가제를 포함할 수 있다. 그러나 이러한 공지의 첨가제들은 당업자에 있어서 임의적으로 선택하여 사용할 수 있는바 이에 대한 자세한 설명은 생략하기로 한다.Meanwhile, the liner rubber composition for the nipple cup of the milking machine of the present invention may include known additives such as reinforcing fillers, activators, sulfur, anti-aging agents, process oils, and vulcanization accelerators, in addition to the above-mentioned raw rubber. However, such known additives may be arbitrarily selected and used by those skilled in the art, and a detailed description thereof will be omitted.

이하 본 발명을 다음의 실시예 및 시험예에 의하여 설명하고자 한다. 그러나 이들은 본 발명을 설명하기 위한 일예로서 이들이 본 발명의 권리범위를 한정하는 것은 아니다. Hereinafter, the present invention will be described by the following examples and test examples. However, these are only examples for explaining the present invention and they do not limit the scope of the present invention.

<비교예>Comparative Example

하기의 표 1과 같이 원료고무로서 아크릴로니트릴(ACN) 함량이 35%인 아크릴로니트릴부타디엔고무(NBR) 100 중량부에 대하여 보강충진제인 카본블랙 45 중량부, 산화마그네슘 3 중량부, 스테아린산 2 중량부, 노화방지제 5 중량부, 공정유 5 중량부, 유황 1.6 중량부, 가황촉진제 1.2 중량부를 밴버리 믹서에서 혼합하여 라이너 고무를 제조하였고, 착유기 유두컵용 라이너는 160℃에서 15분간 가황하여 제조하였다.45 parts by weight of carbon black as a reinforcing filler, 3 parts by weight of magnesium oxide, and 2 parts of stearic acid based on 100 parts by weight of acrylonitrile butadiene rubber (NBR) having 35% acrylonitrile (ACN) as a raw material rubber as shown in Table 1 below. 5 parts by weight, 5 parts by weight of antioxidant, 5 parts by weight of process oil, 1.6 parts by weight of sulfur, 1.2 parts by weight of vulcanization accelerator were mixed in a Banbury mixer to prepare a liner rubber, and a milking machine teat cup liner was vulcanized at 160 ° C. for 15 minutes. .

<실시예 1><Example 1>

하기의 표 1과 같이 원료고무로서 천연고무(NR) 60 중량부, 5-에틸리덴-2-노르보르넨(5-ethylidene-2-norbornene)을 5% 함유한 에틸렌프로필렌디엔고무(EPDM) 10 중량부, 브롬 함량이 2.0몰%인 부틸고무 30 중량부로 구성된 원료고무 100 중량부에 대하여 보강충진제인 카본블랙 50 중량부, 산화마그네슘 3 중량부, 스테아린산 2 중량부, 노화방지제 5 중량부, 공정유 5 중량부, 유황 1.6 중량부, 가황촉진제 1.2 중량부를 밴버리 믹서에서 혼합하여 라이너 고무를 제조하였고, 착유기 유두컵용 라이너는 160℃에서 15분간 가황하여 제조하였다.As the raw material rubber as shown in Table 1 to the natural rubber (NR) 60 parts by weight of 5-ethyl-Li Den-2-norbornene (5-ethylidene-2-norbornene ) an ethylene propylene diene rubber (EPDM) containing 5% 10 parts by weight, 50 parts by weight of carbon black, a reinforcing filler, 3 parts by weight of magnesium oxide, 2 parts by weight of stearic acid, 5 parts by weight of an antioxidant, based on 100 parts by weight of a raw material rubber composed of 30 parts by weight of butyl rubber having a bromine content of 2.0 mol%, 5 parts by weight of process oil, 1.6 parts by weight of sulfur and 1.2 parts by weight of vulcanization accelerator were mixed in a Banbury mixer to prepare a liner rubber, and the liner for the milking machine teat cup was vulcanized at 160 ° C. for 15 minutes.

<실시예 2><Example 2>

원료고무로서 천연고무 60 중량부, 5-에틸리덴-2-노르보르넨을 5% 함유한 에틸렌프로필렌디엔고무 20 중량부, 브롬 함량이 2.0몰%인 부틸고무 20 중량부로 구성된 혼합고무 100 중량부를 사용하는 것을 제외하고는 상기 실시예 1과 동일한 방법으로 라이너 고무 및 착유기 유두컵용 라이너를 제조하였다.100 parts by weight of mixed rubber composed of 60 parts by weight of natural rubber, 20 parts by weight of ethylene propylene diene rubber containing 5% of 5-ethylidene-2-norbornene, and 20 parts by weight of butyl rubber having a bromine content of 2.0 mole%. A liner rubber and a milking machine teat cup liner were prepared in the same manner as in Example 1 except for using.

<실시예 3><Example 3>

원료고무로서 천연고무 60 중량부, 5-에틸리덴-2-노르보르넨을 5% 함유한 에틸렌프로필렌디엔고무 30 중량부, 브롬 함량이 2.0몰%인 부틸고무 10 중량부로 구성된 혼합고무 100 중량부를 사용하는 것을 제외하고는 상기 실시예 1과 동일한 방법으로 라이너 고무 및 착유기 유두컵용 라이너를 제조하였다.100 parts by weight of mixed rubber consisting of 60 parts by weight of natural rubber, 30 parts by weight of ethylene propylene diene rubber containing 5% of 5-ethylidene-2-norbornene, and 10 parts by weight of butyl rubber having a bromine content of 2.0 mole%. A liner rubber and a milking machine teat cup liner were prepared in the same manner as in Example 1 except for using.

표 1. 비교예 및 실시예의 고무조성물(단위 : 중량부)Table 1. Rubber compositions of Comparative Examples and Examples (unit: parts by weight)

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 NBRNBR 100100 -- -- -- 천연고무Natural rubber -- 6060 6060 6060 EPDMEPDM -- 1010 2020 3030 부틸고무Butyl rubber -- 3030 2020 1010 카본블랙(N351)Carbon black (N351) 5050 4545 4545 4545 산화마그네슘Magnesium oxide 33 33 33 33 스테아린산Stearic acid 22 22 22 22 노화방지제Anti-aging 55 55 55 55 공정유Process oil 55 55 55 55 유황brimstone 1.61.6 1.51.5 1.51.5 1.51.5 가황촉진제Vulcanization accelerator 1.21.2 1.31.3 1.31.3 1.31.3

<시험예 1><Test Example 1>

상기 비교예 및 실시예의 고무에 대하여 ASTM 관련규정에 의하여 인장물성, 내오존성능, 내피로특성(FTF), 내크랙특성을 측정하고 그 결과를 아래의 표 2에 정리하여 나타내었다.Tensile properties, ozone resistance, fatigue resistance (FTF), and crack resistance of the rubbers of the Comparative Examples and Examples were measured according to ASTM-related regulations, and the results are summarized in Table 2 below.

표 2. 비교예 및 실시예 고무의 물성측정 결과Table 2. Measurement results of the physical properties of the rubbers of Comparative Examples and Examples

항 목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 인장물성(초기/노화)Tensile Properties (Initial / Aging) 경도(Shore A)Shore A 55/5755/57 54/5654/56 54/5654/56 55/5755/57 300% 모듈러스(kg/cm2)300% modulus (kg / cm 2 ) 82/10282/102 85/11385/113 83/11583/115 85/11785/117 인장강도(kg/cm2)Tensile Strength (kg / cm 2 ) 131/111131/111 156/152156/152 161/155161/155 155/150155/150 신율(%)% Elongation 534/412534/412 635/582635/582 590/553590/553 585/530585/530 내오존성능Ozone performance 정적 평가Static evaluation 열세Thirteen 우수Great 우수Great 우수Great 동적 평가Dynamic evaluation 열세Thirteen 우수Great 우수Great 우수Great 내피로특성(cycle)Fatigue Resistance Cycle 80,70080,700 114,100114,100 121,580121,580 133,870133,870 내크랙특성(가로×세로)Crack resistance (width × length) 11.2×15mm11.2 × 15mm 8.0×6.7mm8.0 × 6.7mm 7.7×5.2mm7.7 × 5.2mm 7.2×4.9mm7.2 × 4.9mm

*인장 초기 시험 : ASTM D412에 준하여 평가* Initial tensile test: evaluated according to ASTM D412

*인장 노화 시험 : 105℃오븐에서 24시간 노화 후 ASTM D412에 준하여 평가* Tensile Aging Test: Evaluates according to ASTM D412 after 24 hours aging in 105 ℃ oven

*내오존성능 정적평가 : ASTM D1149* Ozone performance static evaluation: ASTM D1149

*내오존성능 동적평가 : ASTM D3395* Ozone Performance Dynamic Evaluation: ASTM D3395

*내피로특성 평가(FTF, Monsanto Fatigue to Failure Test) : ASTM D4482에 준함* Fatigue resistance evaluation (FTF, Monsanto Fatigue to Failure Test): According to ASTM D4482

*내크랙특성 평가(De Mattia Test) : ASTM D813에 준함* De Mattia Test: According to ASTM D813

<시험예 2><Test Example 2>

상기 비교예 및 실시예의 방법으로 제조한 라이너 10개를 각각 동일한 제품의 착유기 유두컵에 장착하고 라이너에 크랙이 발생할 때까지의 사용한 평균 기간을 아래의 표 3에 나타내었다.Ten average liners prepared by the method of Comparative Examples and Examples were mounted in the milking machine teat cups of the same product, respectively, and the average period of use until cracking occurred in the liner is shown in Table 3 below.

표 3. 비교예 및 실시예의 라이너 고무의 사용기간Table 3. Service life of liner rubber of comparative example and example

항목Item 비교예Comparative example 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 라이너 사용기간Liner usage period 6개월6 months 8개월8 months 8.5개월8.5 months 8.3개월8.3 months

상기 표 3에 알 수 있듯이 본 발명에 의한 라이너 고무는 종래의 라이너 고무에 비해 수명이 1.3∼1.4배 향상됨을 알 수 있었다.As can be seen in Table 3, the liner rubber according to the present invention was found to have a 1.3 to 1.4 times improvement in life compared to the conventional liner rubber.

상기의 시험예에서처럼 본 발명의 착유기 유두컵용 라이너 고무조성물에 의한 라이너 고무는 종래의 라이너 고무에 비해 인장물성은 동등 수준을 유지하고 있으며, 내오존특성, 내피로특성 및 내크랙특성이 향상되어 내구성이 증가됨을 알 수 있어 본 발명의 고무조성물에 의한 라이너를 사용함으로써 축산농가의 이익을 향상시킬 수 있다. As in the above test example, the liner rubber of the milking machine teat cup liner rubber composition of the present invention maintains the same tensile properties as the conventional liner rubber, and has improved ozone resistance, fatigue resistance, and crack resistance. It can be seen that this can be increased by using the liner by the rubber composition of the present invention can improve the benefits of the livestock farm.

Claims (4)

공지의 착유기 유두컵용 라이너 고무조성물에 있어서,In the known milking machine teat cup liner rubber composition, 천연고무 50∼60중량부 및 에틸렌프로필렌디엔고무와 브롬 함량이 2.0∼2.5몰％ 함유된 부틸고무가 혼합된 합성고무 40∼50중량부로 이루어진 혼합고무를 원료고무로 하고, 이 원료고무와 산화마그네슘을 포함하는 내구성이 향상된 착유기 유두컵용 라이너 고무조성물.50 to 60 parts by weight of natural rubber and 40 to 50 parts by weight of synthetic rubber containing ethylene propylene diene rubber and butyl rubber containing 2.0 to 2.5 mol% of bromine are used as the raw material rubber, and the raw material rubber and magnesium oxide Durable improved milking machine teat cup liner rubber composition comprising a. 제 1 항에 있어서, 합성고무는 에틸렌프로필렌디엔고무와 부틸고무가 2.5 : 7.5 ∼ 7.5 : 2.5의 비율로 혼합된 고무임을 특징으로 하는 내구성이 향상된 착유기 유두컵용 라이너 고무조성물The rubber composition of claim 1, wherein the synthetic rubber is a mixture of ethylene propylene diene rubber and butyl rubber in a ratio of 2.5: 7.5 to 7.5: 2.5. 제 2 항에 있어서, 에틸렌프로필렌디엔고무는 5-에틸리덴-2-노르보르넨이 5% 미만 함유된 것임을 특징으로 하는 내구성이 향상된 착유기 유두컵용 라이너 고무조성물According to claim 2, Ethylene propylene diene rubber is a liner rubber composition for improved milking machine teat cup, characterized in that less than 5% of 5-ethylidene-2-norbornene. 삭제delete
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KR100479662B1 (en) * 2002-07-24 2005-03-30 이정길 The white colored teatcup liner compound for milking machine
KR100483962B1 (en) * 2002-07-24 2005-04-18 정미희 The teatcup liner compound with improved flexibility and anticutting for milking machine
CN105037968A (en) * 2015-07-09 2015-11-11 安徽省华洋橡胶有限公司 Environment-friendly rubber tire material

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US5493995A (en) * 1994-05-16 1996-02-27 Alfa Laval Agri, Inc. Collapsing teat cup liner with tapering barrel wall
KR20010089777A (en) * 1999-11-22 2001-10-08 나까니시 히로유끼 Ethylene copolymer rubber, process for producing the same, and use
US6308656B1 (en) * 1999-12-23 2001-10-30 Constance J. Milbrath Modular teat cup assembly
KR20010106731A (en) * 2000-05-23 2001-12-07 조충환 A rubber composition for tire sidewalls
KR20040009686A (en) * 2002-07-24 2004-01-31 김향미 The teatcup liner compound with improved antifatigue for milking machine
KR20040009685A (en) * 2002-07-24 2004-01-31 정미희 The teatcup liner compound with improved flexibility and anticutting for milking machine
KR20040009687A (en) * 2002-07-24 2004-01-31 이채용 The white colored teatcup liner compound for milking machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493995A (en) * 1994-05-16 1996-02-27 Alfa Laval Agri, Inc. Collapsing teat cup liner with tapering barrel wall
KR20010089777A (en) * 1999-11-22 2001-10-08 나까니시 히로유끼 Ethylene copolymer rubber, process for producing the same, and use
US6308656B1 (en) * 1999-12-23 2001-10-30 Constance J. Milbrath Modular teat cup assembly
KR20010106731A (en) * 2000-05-23 2001-12-07 조충환 A rubber composition for tire sidewalls
KR20040009686A (en) * 2002-07-24 2004-01-31 김향미 The teatcup liner compound with improved antifatigue for milking machine
KR20040009685A (en) * 2002-07-24 2004-01-31 정미희 The teatcup liner compound with improved flexibility and anticutting for milking machine
KR20040009687A (en) * 2002-07-24 2004-01-31 이채용 The white colored teatcup liner compound for milking machine

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