폴리에스테르 폴리올과 폴리프로필렌 카보네이트를 병용한 수용성 폴리우레탄 접착제의 합성 및 특성 = Synthesis and Properties of Polyester polyol/Poly(propylene carbonate) blend Waterborne Polyurethane Adhesives

다국어 초록 (Multilingual Abstract)

Waterborne polyurethane adhesive for footwear is prepared using mainly polyester polyol. But polyester polyol is not used alone because of poor weather resistance. This problem is solved using poly(propylene carbonate) (PPC). It is because of poor weather resistance, heat-resisting property and mechanical properties.
In this study, we are synthesized WPU using poly(propylene carbonate) (PPC) to improve the adhesion strength and water resistance. WPUP were synthesized with polyester polyol, poly(propylene carbonate) (PPC), 4,4'-dicyclohexylmethane diisocyanate (H12MDI), ethylene diamine (EDA), dimethylol propionic acid (DMPA). We were prepared samples of variety molar ratios. A series of polyurethane block copolymers based on polyester polyol, poly(propylene carbonate) (PPC) soft segment were synthesized. The hard segment consisted of 4,4'-dicyclohexylmethane diisocyanate (H12MDI) and ethylene diamine (EDA) as the chain extender. The structures of synthesized WPUP were confirmed by the measurement of FT-IR, 1H-NMR spectrometer. In addition, the properties of the synthesized WPUP were envaluated through DSC, TGA, tensile strength, elongation, modulus, adhesion strength and water resistance strength. Optimum adhesion and water resistance strength were obtained when polyester polyol : poly(propylene carbonate) (PPC) ratio was about 9 : 1

목차 (Table of Contents)

• Ⅰ.서론 1
• Ⅱ.이론적 배경 2
• 2.1.폴리우레탄(Polyurethane) 2
• 2.1.1.개요 2
• 2.1.2.폴리올(Polyol) 6
• 2.1.2.1.폴리에테르계(Polyether type) 7
• 2.1.2.2.폴리에스테르계(Polyester type) 8
• 2.1.3.이소시아네이트(Isocyanate) 10
• 2.1.4.사슬 연장제(Chain Extender) 13
• 2.2.수분산 폴리우레탄(Waterborne Polyurethane) 15
• 2.2.1.개요 15
• 2.2.2.친수성 물질(Ionomer) 16
• 2.2.3.수분산 폴리우레탄의 중합 20
• 2.3.Poly(propylene carbonate) 24
• 2.3.1.개요 24
• 2.4.폴리우레탄 접착제(Polyurethane Adhesive) 27
• 2.4.1.개요 27
• 2.4.2.수분산 폴리우레탄 접착제(Polyurethane Adhesive) 29
• Ⅲ.실험 30
• 3.1.시약 및 재료 30
• 3.2.WPUP(Waterborne polyurethane using poly(propylene carbonate))의 합성 32
• 3.3.합성된 WPUP 분석 34
• 3.3.1.Structure analysis 34
• 3.3.1.1.FT-IR spectra 34
• 3.3.1.2.1H-NMR spectra 34
• 3.3.2.Molecular weight 34
• 3.3.3.Thermal property 35
• 3.3.3.1.DSC 35
• 3.3.3.2.TGA 35
• 3.3.4.Mechanical property 36
• 3.3.5.Adhesive strength 36
• 3.3.6.Water resistance 37
• Ⅳ.결과 및 고찰 38
• 4.1.Structure analysis 38
• 4.1.1.FT-IR spectrum 38
• 4.1.2.1H-NMR spectrum 42
• 4.2.Molecular weight 44
• 4.3.Thermal property 46
• 4.3.1.DSC 46
• 4.3.2.TGA 48
• 4.4.Mechanical property 51
• 4.5.Adhesive strength 57
• 4.6.Water resistance 59
• Ⅴ.결론 61
• Ⅵ.참고문헌 62
• Abstract 65