Kinetic Analysis and Characterization of Epoxy Resins ... - FedOA

More documents

Recommendations

Info

Results and Discussion 98 Figure 3.5: T g of a sample cured with dynamic scan at 10 ◦ C/min. value of specific heat flow. The average values of the cure enthalpy and of the glass transition temperature are shown in Table 3.2. ∆H TOT [J/g] T g [ ◦ C] 485 106,21 Table 3.2: Average values of ∆H TOT and T g . While the glass transition temperature of an epoxy sample microwave cured with the operative conditions listed in Table 3.3, measured through a DSC dynamic scan at heating rate of 10 ◦ C/min from 0 up to 225 ◦ C is illustrated in Figure 3.6. No residual energy is present, so these operative conditions have allowed a complete conversion of the sample. However the system has been heated for a longer time than that elapsed during the DSC dynamic cure at 10 ◦ C/min. Therefore the T g in this case is slightly lower for two reasons: 1. During this prolonged heating time thermal degradation phenomena have been occurred; 98
Results and Discussion 99 Parameters Tray movement MW radiation time Irradiated power Tray velocity IR heating Air temperature Value ON 300 s 1500 W 224 cm/min OFF 25 ◦ C Table 3.3: Microwave oven parameters for the complete conversion of an epoxy sample. Figure 3.6: T g of a sample microwave cured with 1500 W for 300 s. 99
Page 1 and 2:
UNIVERSITA’ DEGLI STUDI DI NAPOLI
Page 3 and 4:
3 I thank all the lecturers of PhD
Page 5 and 6:
5 Microwaves are electromagnetic ra
Page 7 and 8:
CONTENTS 7 1.8.1 DielectricProperti
Page 9 and 10:
CONTENTS 9 4 Conclusions and Outloo
Page 11 and 12:
LIST OF TABLES 11 3.2 Average value
Page 13 and 14:
List of Figures 1.1 Diglycidylether
Page 15 and 16:
LIST OF FIGURES 15 2.23 Onset tempe
Page 17 and 18:
LIST OF FIGURES 17 3.38 Comparison
Page 19 and 20:
Introduction 19 cannot be melted an
Page 21 and 22:
Introduction 21 • bismaleimides;
Page 23 and 24:
Introduction 23 cold solders, casti
Page 25 and 26:
Introduction 25 Average Properties
Page 27 and 28:
Introduction 27 In Figure 1.4 n can
Page 29 and 30:
Introduction 29 ducts and it genera
Page 31 and 32:
Introduction 31 tween current-carry
Page 33 and 34:
Introduction 33 that describe the p
Page 35 and 36:
Introduction 35 1.3.5 Lorentz Force
Page 37 and 38:
Introduction 37 Figure 1.11: Electr
Page 39 and 40:
Introduction 39 Even microwaves can
Page 41 and 42:
Introduction 41 production requirem
Page 43 and 44:
Introduction 43 fect of the electro
Page 45 and 46:
Introduction 45 following different
Page 47 and 48: Introduction 47 Debye equations bas
Page 49 and 50: Introduction 49 Although these mode
Page 51 and 52: Introduction 51 materials that have
Page 53 and 54: Chapter 2 Experimental In this chap
Page 55 and 56: Experimental 55 Characteristic Note
Page 57 and 58: Experimental 57 If the oven is used
Page 59 and 60: Experimental 59 In monomodal applic
Page 61 and 62: Experimental 61 Figure 2.5: Right s
Page 63 and 64: Experimental 63 Figure 2.8: Front v
Page 65 and 66: Experimental 65 regardless of the a
Page 67 and 68: Experimental 67 • The number of t
Page 69 and 70: Experimental 69 Figure 2.11: Surfac
Page 71 and 72: Experimental 71 Figure 2.12: Repeti
Page 73 and 74: Experimental 73 From the Figure 2.1
Page 75 and 76: Experimental 75 in the centre of th
Page 77 and 78: Experimental 77 not read the water
Page 79 and 80: Experimental 79 Test number 1 2 3 4
Page 81 and 82: Experimental 81 Figure 2.19: Plot o
Page 83 and 84: Experimental 83 2.5 Datalogger This
Page 85 and 86: Experimental 85 same reason a wood
Page 87 and 88: Experimental 87 Material Behaviour
Page 89 and 90: Experimental 89 in function of the
Page 91 and 92: Experimental 91 2.6.3 Influence of
Page 93 and 94: Chapter 3 Results and Discussion Th
Page 95 and 96: Results and Discussion 95 There is
Page 97: Results and Discussion 97 Figure 3.
Page 101 and 102: Results and Discussion 101 After pr
Page 103 and 104: Results and Discussion 103 of insta
Page 105 and 106: Results and Discussion 105 1. Mecha
Page 107 and 108: Results and Discussion 107 where k
Page 109 and 110: Results and Discussion 109 Kinetic
Page 111 and 112: Results and Discussion 111 Figure 3
Page 113 and 114: Results and Discussion 113 3.3 Comp
Page 115 and 116: Results and Discussion 115 pedestal
Page 117 and 118: Results and Discussion 117 Tables 3
Page 123 and 124: Results and Discussion 123 t MW [s]
Page 125 and 126: Results and Discussion 125 simulate
Page 129 and 130: Results and Discussion 129 t DSC [s
Page 133 and 134: Results and Discussion 133 Using th
Page 135 and 136: Results and Discussion 135 forward
Page 141 and 142: Results and Discussion 141 than the
Page 143 and 144: Results and Discussion 143 Since ev
Page 145 and 146: Results and Discussion 145 ditions.
Page 147 and 148: Results and Discussion 147 3.23 and
Page 149 and 150:
Results and Discussion 149 The T g
Page 151 and 152:
Results and Discussion 151 3.6.1 St
Page 153 and 154:
Results and Discussion 153 Flexural
Page 155 and 156:
Results and Discussion 155 3.7.2 FT
Page 157 and 158:
Results and Discussion 157 identifi
Page 159 and 160:
Results and Discussion 159 This eff
Page 161 and 162:
Results and Discussion 161 Also in
Page 163 and 164:
Conclusions and Outlook 163 degree
Page 165 and 166:
Appendix A A Brief History of Micro
Page 167 and 168:
A Brief History of Microwave Oven 1
Page 169 and 170:
Bibliography [1] W. Callister, “M
Page 171 and 172:
BIBLIOGRAPHY 171 [19] P. I. Karkana
Page 173:
BIBLIOGRAPHY 173 [34] K. D. V. Pras
show all

Kinetic Analysis and Characterization of Epoxy Resins ... - FedOA

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?