scholarly journals Curing Kinetics Analysis of Dgeba-Mda System

1994 ◽  
Vol 3 (3) ◽  
pp. 096369359400300
Author(s):  
G. Carotenuto ◽  
L. Nicolais
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Performance ◽  
Spectroscopic Analysis ◽  
Curing Kinetics ◽  
Kinetics Analysis ◽  
Epoxy System ◽  
Scanning Calorimetry ◽  
Step Process ◽  
Characterization Study ◽  
High Performance Composite

Thermoset polymers and thermoset based composites are normally polymerized and performed in a step process. This work studies the kinetics behavior of a commercial epoxy system used as matrices of medium and high performance composite materials. The characterization study was performed by differential scanning calorimetry (DSC) and spectroscopic analysis.

Synthesis and Cure Kinetic Studies of a New Trifunctional Imide Oligomer

2010 ◽  
Vol 152-153 ◽  
pp. 1775-1782
Author(s):  
Cheng Yang Wang ◽  
Xiao Gang Zhao ◽  
Xiao Hui Yu ◽  
Chang Wei Liu ◽  
Yun Liang Wang
Keyword(s):  
High Performance ◽  
Kinetic Studies ◽  
Curing Kinetics ◽  
Dynamic Mode ◽  
Processing Temperature ◽  
Scanning Calorimetry ◽  
Cure Reaction ◽  
Excellent Thermal Stability ◽  
High Performance Composite ◽  
High Performance Resin

A novel phenylethynyl-terminated imide oligomer was prepared from a trifunctional amine and 4-phenylethynylphthalic anhydride (PEPA). The oligomer can be used to prepare the high performance resin-based composite material via resin transfer molding (RTM) due to its low melt viscosity(<2Pa.s) between 250°C and 320°C.The cured resin exhibits excellent thermal stability than PETI series as a result of the introduction of star-branched units. The thermal analysis of the curing kinetics of resin was carried out by differential scanning calorimetry (DSC), with the rate of cure reaction and the degree of cure calculated in the dynamic mode and being tested under isothermal conditions. A reasonable agreement between the experimental data and the kinetic model has been obtained over the whole processing temperature range which was important for processing simulation and quality control of processing for high performance composite.

Study on Curing Kinetics of MEP-15/593/660 System

2014 ◽  
Vol 988 ◽  
pp. 31-35
Author(s):  
Jia Le Song ◽  
Chan Chan Li ◽  
Zhi Mi Zhou ◽  
Chao Qiang Ye ◽  
Wei Guang Li
Keyword(s):  
Activation Energy ◽  
Differential Scanning Calorimetry ◽  
Kinetic Parameters ◽  
Curing Kinetics ◽  
Conversion Ratio ◽  
Scanning Calorimetry ◽  
Degree Of Cure ◽  
Curing Kinetic ◽  
The Relationship ◽  
Kinetics Of

Curing kinetics of MEP-15/593 system and MEP-15/593/660 system is studied by means of differential scanning calorimetry (DSC). Curing kinetic parameters are evaluated and the relationship between diluent 660 and the curing properties is investigated. The results show that the diluent 660 can not only reduce viscosity and activation energy, but also improve the degree of cure and conversion ratio.

Incidence of the melting-degradation process of vitamin C on the determination of the phase diagram with acetaminophen enhanced by high performance liquid chromatography tools

2015 ◽  
Vol 39 (3) ◽  
pp. 1938-1942 ◽  
Author(s):  
Yohann Corvis ◽  
Marie-Claude Menet ◽  
Philippe Espeau
Keyword(s):  
Phase Diagram ◽  
Differential Scanning Calorimetry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Degradation Process ◽  
Liquid Equilibrium ◽  
Scanning Calorimetry ◽  
Solid Liquid

The exact solid–liquid equilibrium between ascorbic acid and acetaminophen was established combining high performance liquid chromatography and differential scanning calorimetry.

scholarly journals Controlled Release Profile of Imidacloprid-β-Cyclodextrin Inclusion Complex Embedded Polypropylene Filament Yarns

2017 ◽  
Vol 12 (1) ◽  
pp. 155892501701200 ◽  
Author(s):  
Ahmet C. Turan ◽  
İlhan Özen ◽  
Hüsnü K. Gürakın ◽  
Enrico Fatarella
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Fourier Transform ◽  
Inclusion Complex ◽  
High Performance ◽  
Release Profile ◽  
Dissolution Time ◽  
Scanning Calorimetry ◽  
Cyclodextrin Inclusion ◽  
Cyclodextrin Inclusion Complex

Imidacloprid-β-cyclodextrin (IMI-β-CD) inclusion complex was synthesized and effectively incorporated into filament yarns of polypropylene. The physical and thermal properties of IMI-β-CD inclusion complex were determined by Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. According to the results, formation of the inclusion complex was achieved along with enhanced thermal stability. The release profile of imidacloprid was monitored by high-performance chromatography measurements. Dissolution time of the IMI-β-CD inclusion complex was increased to 5 times that of the neat imidacloprid (from 9 h to 48 h). Poylpropylene filament yarns containing 3 wt.% IMI-β-CD inclusion complex released 84 wt.% of IMI within 21 days.

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