Cure kinetics and thermal properties of tetramethylbiphenyl epoxy resin/phthalazinone-containing diamine/hexa(phenoxy)cyclotriphophazene system

2009 ◽  
Vol 114 (3) ◽  
pp. 1397-1404 ◽  
Author(s):  
Xinghong Zhang ◽  
Boxuan Zhou ◽  
Xueke Sun ◽  
Guorong Qi
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Cure Kinetics

Thermal properties and cure kinetics of a liquid crystalline epoxy resin with biphenyl-aromatic ester mesogen

2011 ◽  
Vol 513 (1-2) ◽  
pp. 88-93 ◽  
Author(s):  
Yin-Ling Liu ◽  
Zhi-Qi Cai ◽  
Xiufang Wen ◽  
Pihui Pi ◽  
Dafeng Zheng ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Liquid Crystalline ◽  
Cure Kinetics ◽  
Aromatic Ester ◽  
Liquid Crystalline Epoxy ◽  
Kinetics Of

scholarly journals Reaction Mechanism and Mechanical Property Improvement of Poly(Lactic Acid) Reactive Blending with Epoxy Resin

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2429
Author(s):  
Krittameth Kiatiporntipthak ◽  
Nanthicha Thajai ◽  
Thidarat Kanthiya ◽  
Pornchai Rachtanapun ◽  
Noppol Leksawasdi ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Softening Temperature ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Nanoparticle Dispersion ◽  
Reactive Blending ◽  
Partial Miscibility ◽  
Epoxy Blends ◽  
Epoxy Content

Polylactic acid (PLA) was melt-blended with epoxy resin to study the effects of the reaction on the mechanical and thermal properties of the PLA. The addition of 0.5% (wt/wt) epoxy to PLA increased the maximum tensile strength of PLA (57.5 MPa) to 67 MPa, whereas the 20% epoxy improved the elongation at break to 12%, due to crosslinking caused by the epoxy reaction. The morphology of the PLA/epoxy blends showed epoxy nanoparticle dispersion in the PLA matrix that presented a smooth fracture surface with a high epoxy content. The glass transition temperature of PLA decreased with an increasing epoxy content owing to the partial miscibility between PLA and the epoxy resin. The Vicat softening temperature of the PLA was 59 °C and increased to 64.6 °C for 0.5% epoxy. NMR confirmed the reaction between the -COOH groups of PLA and the epoxy groups of the epoxy resin. This reaction, and partial miscibility of the PLA/epoxy blend, improved the interfacial crosslinking, morphology, thermal properties, and mechanical properties of the blends.

The effects of modified zinc oxide nanoparticles on the mechanical/thermal properties of epoxy resin

2020 ◽  
Vol 137 (43) ◽  
pp. 49330
Author(s):  
Yasmine N. Baghdadi ◽  
Lucia Youssef ◽  
Kamal Bouhadir ◽  
Mohammad Harb ◽  
Samir Mustapha ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Thermal Properties ◽  
Epoxy Resin ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles

Incorporation of epoxy resin and carbon nanotube into silica/siloxane network for improving thermal properties

2016 ◽  
Vol 51 (19) ◽  
pp. 9057-9073 ◽  
Author(s):  
Saeid Najafi-Shoa ◽  
Hossein Roghani-Mamaqani ◽  
Mehdi Salami-Kalajahi ◽  
Reza Azimi ◽  
Meysam Gholipour-Mahmoudalilou
Keyword(s):  
Thermal Properties ◽  
Carbon Nanotube ◽  
Epoxy Resin

Synthesis and thermal properties of urethane-containing epoxy resin

2015 ◽  
Vol 24 ◽  
pp. 20-23 ◽  
Author(s):  
Fan-Long Jin ◽  
Heng-Chang Liu ◽  
Baoqing Yang ◽  
Soo-Jin Park
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin

Investigating the relationship between tack and degree of conversion in DGEBA-based epoxy resin cured with dicyandiamide and diuron

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali Kuliaei ◽  
Iraj Amiri Amraei ◽  
Seyed Rasoul Mousavi
Keyword(s):  
Epoxy Resin ◽  
Reaction Order ◽  
Theoretical Data ◽  
Cure Kinetics ◽  
Diglycidyl Ether ◽  
Degree Of Conversion ◽  
Ozawa Method ◽  
Heating Rates ◽  
Scanning Calorimetry ◽  
Kinetics Of

Abstract The purpose behind this research was to determine the optimum formulation and investigate the cure kinetics of a diglycidyl ether of bisphenol-A (DGEBA)-based epoxy resin cured by dicyandiamide and diuron for use in prepregs. First, all formulations were examined by the tensile test, and then, the specimens with higher mechanical properties were further investigated by viscometry and tack tests. The cure kinetics of the best formulation (based on tack test) in nonisothermal mode was investigated using differential scanning calorimetry at different heating rates. Kissinger and Ozawa method was used for determining the kinetic parameters of the curing process. The activation energy obtained by this method was 71.43 kJ/mol. The heating rate had no significant effect on the reaction order and the total reaction order was approximately constant ( m + n ≅ 2.1 $m+n\cong 2.1$ ). By comparing the experimental data and the theoretical data obtained by Kissinger and Ozawa method, a good agreement was seen between them. By increasing the degree of conversion, the viscosity decreased; as the degree of conversion increased, so did the slope of viscosity. The results of the tack test also indicated that the highest tack could be obtained with 25% progress of curing.

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