Synthesis and characterization of unsaturated polyester resins cured by frontal polymerization

e-Polymers ◽  
2004 ◽  
Vol 4 (1) ◽  
Author(s):  
Stefano Fiori ◽  
Alberto Mariani ◽  
Simone Bidali ◽  
Giulio Malucelli
Keyword(s):  
Thermal Properties ◽  
Maleic Anhydride ◽  
Unsaturated Polyester ◽  
Front Velocity ◽  
Frontal Polymerization ◽  
Maximum Temperature ◽  
Synthesis And Characterization ◽  
Polyester Resins ◽  
Crosslinking Agents

Abstract Various crosslinking agents have been used to frontally cure the unsaturated polyester derived by the reaction of maleic anhydride and 1,2-propanediol. The effect of composition of the curing mixture on the front velocity and its maximum temperature, as well as on the thermal properties of the obtained materials, is described.

Synthesis and characterization of a polyester/styrene resin obtained by frontal polymerization

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Stefano Fiori ◽  
Giulio Malucelli ◽  
Alberto Mariani ◽  
Laura Ricco ◽  
Elena Casazza
Keyword(s):  
Free Radical ◽  
Mechanical Behaviour ◽  
Unsaturated Polyester ◽  
Front Velocity ◽  
Frontal Polymerization ◽  
Maximum Temperature ◽  
Synthesis And Characterization ◽  
Free Radical Initiator ◽  
First Time

AbstractThe frontal polymerization technique has been successfully applied, for the first time, to obtain an unsaturated polyester/styrene resin. The effect of the ratio of the two aforementioned components, as well as of the type and amount of free-radical initiator on both front velocity and maximum temperature reached by the front, has been thoroughly studied. The resulting products have been characterized in terms of their thermal and dynamic-mechanical behaviour. A comparison of such products with the corresponding materials obtained by the classical batch polymerization technique has evidenced that frontal polymerization allows to reach a higher degree of crosslinking with respect to batch copolymerization and hence a better thermal and mechanical behaviour.

Synthesis and characterization of some novel unsaturated polyester resins containing amide groups

1995 ◽  
Vol 34 (4) ◽  
pp. 377-383 ◽  
Author(s):  
Ibrahim A. Attia ◽  
Mohamed S. Abdel-Halim ◽  
Abdel-Azim A. Abdel-Azim
Keyword(s):  
Unsaturated Polyester ◽  
Synthesis And Characterization ◽  
Polyester Resins ◽  
Unsaturated Polyester Resins

Synthesis and characterization of fully bio-based unsaturated polyester resins

2017 ◽  
Vol 53 (6) ◽  
pp. 4635-4644 ◽  
Author(s):  
Bojana Z. Fidanovski ◽  
Pavle M. Spasojevic ◽  
Vesna V. Panic ◽  
Sanja I. Seslija ◽  
Jelena P. Spasojevic ◽  
...  
Keyword(s):  
Unsaturated Polyester ◽  
Synthesis And Characterization ◽  
Polyester Resins ◽  
Unsaturated Polyester Resins

scholarly journals The impact of crosslinking monomers concentration on the properties of unsaturated polyester resins

2017 ◽  
Vol 72 (1) ◽  
pp. 13
Author(s):  
Artur Chabros ◽  
Barbara Gawdzik
Keyword(s):  
Thermal Properties ◽  
Maleic Anhydride ◽  
Mechanical Behaviour ◽  
Diethylene Glycol ◽  
Unsaturated Polyester ◽  
Mechanical And Thermal Properties ◽  
Glycol Dimethacrylate ◽  
Polyester Resins ◽  
Unsaturated Polyester Resins ◽  
The Impact

<p>The article illustrates the preparation of unsaturated polyester as well as the mechanical and thermal properties of his copolymers with crosslinking monomers (styrene and diethylene glycol dimethacrylate). The starting polyester was obtained from maleic anhydride, propylene glycol and isobutanol. The prepared series of unsaturated polyester resins were subjected to different studies concerning evaluation of their viscosity, mechanical and thermal properties and also dynamic mechanical behaviour (DMA).</p>

scholarly journals Synthesis and Thermal Properties of Cerium-Dysprosium Oxide

2016 ◽  
Vol 61 (2) ◽  
pp. 965-969 ◽  
Author(s):  
M. Mikuśkiewicz ◽  
M. Stopyra ◽  
G. Moskal
Keyword(s):  
Thermal Properties ◽  
Phase Composition ◽  
Thermal Diffusivity ◽  
Solid State ◽  
Cerium Oxide ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Equimolar Ratio ◽  
Dysprosium Oxide

Abstract The paper presents results of investigation on synthesis and characterization of cerium-dysprosium oxide. The input powders - dysprosium oxide Dy2O3 and cerium oxide CeO2 - were mixed so as to obtain equimolar ratio of cations, milled in alcohol and synthesized via solid state reaction process at 1350°C under 15MPa in vacuum for 2h. The microstructure, phase composition and thermal properties were analyzed. The obtained material was multiphase. Non-stoichiometric compounds were identified. Thermal diffusivity of investigated material decreased in the temperature range of 25-1000°C from 0,71 to 0,45 mm2/s.

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