Application of differential scanning calorimetry to cure optimization and quality control of a vinyl ester resin

1983 ◽  
Vol 4 (4) ◽  
pp. 201-205 ◽  
Author(s):  
L. C. Cummings
Keyword(s):  
Differential Scanning Calorimetry ◽  
Quality Control ◽  
Vinyl Ester ◽  
Vinyl Ester Resin ◽  
Scanning Calorimetry

Using the Ozawa method to study the thermally initiated curing kinetics of vinyl ester resin

RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2677-2683 ◽  
Author(s):  
Hui-Wang Cui ◽  
Katsuaki Suganuma ◽  
Hiroshi Uchida
Keyword(s):  
Differential Scanning Calorimetry ◽  
Vinyl Ester ◽  
Curing Kinetics ◽  
Vinyl Ester Resin ◽  
Ozawa Method ◽  
Scanning Calorimetry ◽  
Differential Scanning Calorimetry Method ◽  
Kinetics Of

1,1-Bis(t-hexylperoxy)-3,3,5-trimethyl cyclohexane was introduced to thermally initiate the curing of vinyl ester resin, and a dynamic differential scanning calorimetry method was applied to investigate the thermally initiated curing procedures.

Cure and Dynamic-Mechanical Behaviors of Vinyl Ester Resinfilled with Multi-Walled Carbon Nanotubes

2010 ◽  
Vol 150-151 ◽  
pp. 1413-1416 ◽  
Author(s):  
Hong Yan Chen ◽  
Zhen Xing Kong ◽  
Ji Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Vinyl Ester ◽  
Mechanical Response ◽  
Cure Kinetics ◽  
Crosslinking Density ◽  
Vinyl Ester Resin ◽  
Scanning Calorimetry ◽  
Dynamic Mechanical ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The cure kinetics of Derakane 411-350, a kind of vinyl ester resin, and its suspensions containing multi-walled carbon nanotubes( MWCNTs) were investigated via non-isothermal dynamic scanning calorimetry (DSC) measurements. The results showed that incorporation of MWCNTs into vinyl ester resin excessively reduces polymerization degree and crosslinking density of vinyl ester resin. For suppressing the negative effect caused by nanotubes, the higher temperature initiator combined with the initiator MEKP was used. Dynamic-mechanical Behavior testing was then carried out on the cured sample in order to relate the curing behavior of MWCNTs modified resin suspensions to mechanical response of their resulting nanocomposites. It was revealed that nanocomposites containing MWCNTs possessed larger storage modulus values as well as higher glass transition temperatures (Tg) as compared to those without MWCNTs after using mixed intiators system to improve the degree of cure.

Thermal Analysis of Aluminum Alloys

2019 ◽  
Author(s):  
Daniel Larouche
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Quality Control ◽  
Aluminum Alloys ◽  
Isothermal Calorimetry ◽  
Curve Analysis ◽  
Cooling Curve ◽  
Scanning Calorimetry ◽  
Cooling Curve Analysis ◽  
Scientists And Engineers

Thermal analysis is applied on aluminum alloys by researchers to investigate mainly phase transformations, while it is regularly used for quality control purposes in industry. Techniques like cooling curve analysis, differential thermal analysis, differential scanning calorimetry, and isothermal calorimetry are amongst those most frequently used by scientists and engineers. These techniques will be described, and a mathematical description of the results will be developed. State-of-the-art quantification methods applied on aluminum alloys will be presented and criticized based on specific examples taken from the literature.

Differential scanning calorimetry method in quality control of semi-hard cheeses

2021 ◽  
Vol 56 (3) ◽  
pp. 39-41
Author(s):  
O.B. Rudakov ◽  
◽  
I.A. Saranov ◽  
K.K. Polyansky ◽  
Ya.O. Rudakov ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Quality Control ◽  
Scanning Calorimetry ◽  
Differential Scanning Calorimetry Method

An Investigation of Carbon Nanotube Dispersion in Vinyl Ester Resin Using Mechanical, Thermal and Statistical Techniques

2014 ◽  
Author(s):  
Seyed Morteza Sabet ◽  
Hassan Mahfuz ◽  
Javad Hashemi
Keyword(s):  
Carbon Nanotubes ◽  
Differential Scanning Calorimetry ◽  
Vinyl Ester ◽  
Mixing Time ◽  
Flexural Modulus ◽  
Nanoparticle Concentration ◽  
Scanning Calorimetry ◽  
Carbon Nanotube Dispersion ◽  
Multi Walled Carbon Nanotubes ◽  
Sonication Parameters

The inclusion of 0.25 and 0.5 wt.% functionalized multi-walled carbon nanotubes (MWCNTs) into a vinyl ester (VE) resin has been studied. To investigate the effect of carbon nanotubes (CNTs) dispersion, the sonication process has been performed under a variety of parameters including mixing time and sonication amplitude. Differential scanning calorimetry (DSC) and 3-point flexural testing methods have been employed to explore the thermo-mechanical properties of materials. Differential scanning calorimetry results show up to 13°C increase in the glass transition temperature (Tg) of the VE polymer by introducing 0.25 wt.% CNTs with a total sonication energy of 60 KJ. It is also established that the flexural modulus of the polymer can be improved up to 24%. An array indentation technique has been used to evaluate the hardness and elastic modulus variations in the regions of nanoparticle concentration. The resulting variations along the indentation array have been statistically studied using three-parameter Weibull distribution. Based on the resulting dispersion conditions, the optimum sonication parameters and nanoparticle concentration have been determined.

scholarly journals Studies on Viscoelastic, Thermal and Morphological Properties of Vinyl Ester – Mixed Diluents System

2017 ◽  
Vol 62 (3) ◽  
pp. 1845-1850
Author(s):  
Jagesh Kumar Ranjan ◽  
Raghu Raja Pandiyan Kuppusamy ◽  
Sudipta Goswami
Keyword(s):  
Thermal Analysis ◽  
Viscoelastic Properties ◽  
Vinyl Ester ◽  
Domain Size ◽  
Morphological Properties ◽  
Vinyl Ester Resin ◽  
Dynamic Mechanical Analyzer ◽  
Scanning Calorimetry ◽  
The Difference ◽  
Isothermal Mode

Abstract Vinyl ester resin networks formed by using mixture of diluents were prepared. Methyl methacrylate (MMA) diluent was mixed in various proportions with vinyl ester resin which was already premixed with styrene diluent (45 wt. %). Weight ratios e.g. 80:20, 70:30 and 60:40 of VE resin: MMA diluents were studied. Viscoelastic properties of the cross-linked resin were studied by dynamic mechanical analyzer in terms of storage modulus and tanδ. Thermal analysis was performed using non-isothermal mode of Differential scanning calorimetry. The samples with mixed diluents, showed higher modulus, and glass transition temperature in comparison to that of the pure vinyl ester-styrene resin cross-linked in presence of styrene only. The difference in thermal stability between vinyl ester-styrene and vinyl ester-MMA-styrene was checked. Vinyl Ester - 20 wt. % MMA-Styrene samples have the best thermal property among all other prepared samples. Multiphase morphology was formed for the thermoset crosslinked with mixed diluents in contrast to that formed with single diluent. With increase in MMA content in the resin dispersed domain size increased.

Quality control of the cure process of thermosetting resins by means of differential scanning calorimetry

1985 ◽  
Vol 30 (6) ◽  
pp. 1349-1357 ◽  
Author(s):  
A. Apicella ◽  
C. A. Beretta ◽  
M. A. Castiglione-Morelli ◽  
E. Martuscelli ◽  
L. Nicolais ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Quality Control ◽  
Cure Process ◽  
Scanning Calorimetry ◽  
Thermosetting Resins
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