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PUKYONG Repository 대학원 고분자공학과

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Abstract: Chloroprene rubber has high modulus, good weather resistant, good ozone resistant, thermal degradation resistant and low gas permeability. Chloroprene rubber is used to gasket and seal products.
When montmorillonite(MMT) was compared with black and silica the better reinforcing-effect but dispersion was not good. MMT has a difficult dispersion in the rubber because it has the strong hydrogen bond and hydrophilic property.
To ensure good compatibility between polymer and montmorillonite, modification of the MMT become necessary. That can be modified by cation exchange with organic ammonium salt or amines.
In this study, for the purpose of establishing exfoliated polymer-MMT nanohybrid systems with the melt intercalation method, experiments were conducted for mixtures of MMT and chloroprene rubber.
CR-nanocomposite cure rate was characterized by oscillating disk rheometer(ODR). The state of intercalation and exfoliation was characterized by X-ray diffraction(XRD). Each of tensile strength, modulus, elongation, tear strength characterized by universal test machine(UTM). Flex resistant characterized by demattia test. Dynamic mechanical property characterized by dynamic mechanical analysis(DMA).

URI: https://repository.pknu.ac.kr:8443/handle/2021.oak/9855
http://pknu.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001964115

Table Of Contents: I. 서론 1
II. 이론적 배경 4
2.1 고무의 가교 4
2.1.1 클로로프렌고무의 금속산화물 가교 4
2.2 무기 층상 실리케이트의 구조 6
2.3 무기 층상 실리케이트의 분산 10
2.3.1 층상 실리케이트의 유기화 반응 10
2.3.2 층상 실리케이트의 분산 방법 12
III. 실험 15
3.1 실험 재료 15
3.1.1 클로로프렌고무 15
3.1.2 보강제 17
3.1.3 첨가제 19
3.1.4 가교제 및 가교촉진제 20
3.2 실험장치 21
3.2.1 Kneader 21
3.2.2 Roll mill 21
3.2.3 Hot press machine 21
3.2.4 Oscillating disk rheometer 21
3.2.5 경도계 21
3.2.6 비중계 22
3.2.7 Universal testing machine 22
3.2.8 데마티어 시험기 22
3.2.9 Abrasion tester 22
3.2.10 Mooney viscometer 22
3.2.11 Dynamic mechanical analysis 23
3.2.12 X-ray diffractormeter(XRD) 23
3.3 실험 방법 24
3.4 물리적 특성 28
3.4.1 경도 28
3.4.2 인장강도/인장응력/신장율 30
3.4.3 인열강도 33
3.4.4 내마모성 35
3.4.5 균열 성장 저항성 38
3.4.6 무늬 점도 40
IV. 결과 및 고찰 41
4.1 Organically modified layered silicate(OLS) 첨가에 따른 클로로프렌고무(Chloroprene rubber)의 특성 41
4.1.1 가황 특성 44
4.1.2 기계적 강도 48
4.1.3 Mooney viscosity 53
4.1.4 Compression set property 55
4.1.5 Dynamic mechanical property 57
4.1.6 Crack growth test 59
4.1.7 X-RD 회절 패턴 61
V. 결론 63
Reference 64

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