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Alternative Title: Change of properties of epoxy resin blended with the modified epoxy

Abstract: In order to improve adhesion properties and give a toughness of epoxy system, the epoxy coatings, which have prepared by blending polysulfide modified epoxy resin(FLEP-60) and phenoxy resin(YP-50EK35) with DGEBA type epoxy resin(YD-128) were estimated by UTM test, adhesion test, surface hardness test, and thermal analysis. It was shown that the epoxy film of YD-128 blended with FLEP-60 was increased on the flexibility but have not an effect on the adhesion. In the case of epoxy film of YD-128 blended with YP-50EK35, it is shown that the film blended with the weight ratio of 7 : 3 has the most excellent mechanical properties.
It was found that mechanical properties of epoxy film were influenced by blending of the modified epoxy resins which have other characteristics in Tg, viscosity, and the amount of -OH group of epoxy.

URI: https://repository.pknu.ac.kr:8443/handle/2021.oak/3552
http://pknu.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001953443

Table Of Contents: 1. 서론 = 1
2. 이론적 배경 = 4
2-1. 기계적인 파괴^(13)) = 4
2-1-1. 인장강도 (Tensile Strength) = 4
2-1-2. 영구 변형 = 6
2-1-3. 극한 강도와 신장 = 6
2-2. 접착력 시험 방법^(14-17)) = 7
2-2-1. 인장, 인장 전단, 압축 전단 등의 접착 강도 = 7
2-2-2. 박리 접착강도 = 9
2-2-3. 접착 joint design^(18-21)) = 10
3. 실험 = 15
3-1. 시약 = 15
3-2. 시편 제조 = 17
3-3. 분석 = 19
4. 결과 및 고찰 = 20
4-1. FT-IR 측정 = 20
4-2. DSC 측정 = 23
4-3. Universal Testing Machine (UTM) 측정 = 26
4-4. 접착 시험 = 32
4-5. 표면 경도 시험 = 37
4-6. Rheology 특성 = 39
5. 결론 = 42
참고문헌 = 43

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