臺灣博碩士論文加值系統

Nanocomposite is the material that very intense to investigate today, especially epoxy resin DGEBA as polymer matrix. Epoxy resin is very popular polymer as based material in industry and engineering field such for coatings, insulated of electronics circuit, aerospace industry, etc. However, the researchers intensively explored the nanocomposite especially since Toyota Research Group has done research about the nylon-6/montmorillonite system.
The combination of mica platelet and Ag nanoparticle is used as filler in this nanocomposite system, and therefore it is known as nanohybrid which is applied in different content to consider its effect to epoxy resin DGEBA properties. The three different content of nanohybrid was proposed to be identified there are 0 wt%, 0.3 wt%, 0.7 wt%, and 1.0 wt% of nanohybrid.
The fine dispersion of nanohybrid actually induced the alteration of epoxy resin mechanical properties. The structure of modified epoxy resin is denser than pristine epoxy resin and it increased the hardness properties and tensile strength properties of epoxy resin. However, the frequency and temperature also affected of the epoxy resin thermomechanical properties alteration which the glass transition temperature (Tg) of nanocomposite increased with longer relaxation time. The polymer chains mobility also enhanced related shift factor result of WFL equation with itself motion related its ΔCp.

Nanocomposite is the material that very intense to investigate today, especially epoxy resin DGEBA as polymer matrix. Epoxy resin is very popular polymer as based material in industry and engineering field such for coatings, insulated of electronics circuit, aerospace industry, etc. However, the researchers intensively explored the nanocomposite especially since Toyota Research Group has done research about the nylon-6/montmorillonite system.
The combination of mica platelet and Ag nanoparticle is used as filler in this nanocomposite system, and therefore it is known as nanohybrid which is applied in different content to consider its effect to epoxy resin DGEBA properties. The three different content of nanohybrid was proposed to be identified there are 0 wt%, 0.3 wt%, 0.7 wt%, and 1.0 wt% of nanohybrid.
The fine dispersion of nanohybrid actually induced the alteration of epoxy resin mechanical properties. The structure of modified epoxy resin is denser than pristine epoxy resin and it increased the hardness properties and tensile strength properties of epoxy resin. However, the frequency and temperature also affected of the epoxy resin thermomechanical properties alteration which the glass transition temperature (Tg) of nanocomposite increased with longer relaxation time. The polymer chains mobility also enhanced related shift factor result of WFL equation with itself motion related its ΔCp.

CHAPTER PAGE
ACKNOWLEDGEMENT i
ABSTRACT ii
TABLE OF CONTENTS iii
LIST OF TABLES v
LIST OF FIGURES vi

CHAPTER 1. INTRODUCTION 1
1.1 Research Background 1
1.2 Research Objectives 2
1.3 Problem Limitation 2
1.4 Research Advantage 2
1.5 Writing Systematic 2

CHAPTER 2. LITERATURE REVIEW 3
2.1 Epoxy Resin 3
2.2 Organoclay 3
2.2.1 Organoclay Structure 4
2.2.2 Organoclay Structure in Polymer Matrix 6
2.2.3 Nanohybrid Structure 7
2.3 Polymer/Clay Nanocomposite Preparation 8
2.3.1 Sol-gel Technology 8
2.3.2 Intercalation of Polymer or Pre-polymer from Solution 8
2.3.3 In-situ Intercalative Polymerization 9
2.3.4 Melt Intercalation 9

CHAPTER 3. EXPERIMENTAL METHOD 11
3.1 Experimental Flow Chart 11
3.2 Experimental Procedure 12
3.2.1 Materials 12
3.2.2 Calculation Method 13
3.2.3 Steps of Experimental 13
3.3 Characterization 14
3.3.1 Scanning Electron Microscopy 14
3.3.2 Dynamical Mechanical Analyzer 14
3.3.3 X-Ray Diffraction 14
3.3.4 Differential Scanning Calorimetric 15
3.3.5 Thermogravimetric Analysis 15
3.3.6 Hardness Examination 15
3.3.7 Tensile Examination 15
a
CHAPTER 4. RESULTS AND DISSCUSION 16
4.1 Structure of AgNPs/Mica Epoxy Nanocomposite 16
4.2 Mechanical Properties of AgNPs/Mica Epoxy Nanocomposite 19
4.3 Thermal Properties of AgNPs/Mica Epoxy Nanocomposite 22
4.4 Thermomechanical Properties of AgNPs/Mica Epoxy Nanocomposite 25
4.5 Time-Temperature Superposition 29
4.6 The Glass Transition Dynamics Analysis by CRR Theory 32

CHAPTER 5. CONCLUSION 35

REFERENCES 36

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