Reaction kinetics and physical properties of unsaturated polyester modified with methylacyloxylpropyl-POSS

Gao, Jungang; Liu, Shirong; Kong, Dejuan

doi:10.1007/s10965-010-9456-7

Cited by 13 publications

(6 citation statements)

References 14 publications

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“…In particular, most of the studies were performed on epoxy systems, whereas according to our investigation, less attention has been focused on polyester-based nanocomposites. In particular, some studies have focused on the effects of the introduction of nanoclays [12][13][14][15][16][17] and POSS [18][19] on the curing kinetics of UP nanocomposites. In particular, Zhou et al [17] found a delaying effect of modified montmorillonite nanoplatelets on the curing reaction of polyester matrices.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: Thermal and chemorheological modelling

Monti

Puglia

Natali

et al. 2011

Composites Science and Technology

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Please cite this article as: Monti, M., Puglia, D., Natali, M., Torre, L., Kenny, J.M., Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: thermal and chemorheological modelling, Composites Science and Technology (2011), doi: 10.1016/j.compscitech.2011 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractWe report the study of the effects of carbon nanofibers (CNFs) on the cure kinetics and on the chemorheology of unsaturated polyester resins (UP). Two main experimental techniques were utilized: differential scanning calorimetry and rheometry. Isothermal and dynamic tests were performed on the neat polyester resin and on two nanocomposite systems, with 0.5 and 1.0 wt% of CNFs. Furthermore, a TGA study of the selected systems at different isothermal temperatures was performed to evaluate the styrene consumption and related loss rate during the curing process. Subsequently, a phenomenological model (autocatalytic approach) was applied to the experimental data, both in isothermal and dynamic conditions. In the case of dynamic curing, the evidence of multiple peaks in the heat flow curves was studied through the deconvolution of the overall reaction thermogram in single reaction steps. An empirical rheological model coupled with the reaction kinetics was successfully applied to simulate the viscosity changes of the UP matrix. Experimental and modelling results demonstrate the presence of a delay effect of the CNFs on the cure of the UP resin matrix.

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Section: Introductionmentioning

confidence: 99%

Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: Thermal and chemorheological modelling

Monti

Puglia

Natali

et al. 2011

Composites Science and Technology

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“…UPEs cure via the radical copolymerization of a monomer and the low molecular weight unsaturated polyester liquid when an initiator and an accelerator are added at ambient conditions [3][4][5][6]. UPE curing is an exothermic reaction accompanied with viscosity growth due to molecular weight increase to form a threedimensional cross-linked network [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Also Polyoxypropylenetriamine (POPTA) has also been employed, combined with temperature during curing, to optimize the damping factor and mechanical properties of UPE [21]. In addition polyhedral oligomeric silsesquioxanes (EA-POSS) has been used to improve the damping behaviour and other mechanical properties of UPE [4,22]. These modifications increase the toughness and tensile strength of UPE resin.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Thermal and Mechanical Properties of Unsaturated Polyester Resin as a Binder in Polymer Concrete for Manufacturing Precision Tool Machine Bases

Haddad¹,

Sbarski²

2017

J Material Sci Eng

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This study investigates the effect of unsaturated polyester resin chemical composition on the coefficient of thermal expansion, damping properties, flexural strength, tensile strength and hardness. The resin is used as binder in polymer concrete for manufacturing the bases of precision tool machines in previous work published by the authors. Resins of various ratios of styrene-ARAPOL and methyl methacrylate (MMA)-ARAPOL were made and their curing kinetics was studied using viscosity measurements and exothermic reaction temperature profiles. The resins were studied using dynamic mechanical analysis and in-house thermal expansion measuring devices. It was found that ARAPOL-MMA (60:40) has the highest damping factor of 5.46%, and the thermal expansion coefficient of 7.98 × 10-5/°C. This composition also has the optimum flexural and tensile strengths at 128 MPa and 58.6 MPa.

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“…[36,37] Herein, montmorillonite (MMT) clay has been applied to the polymer matrix to enhance the mechanical, barrier, and thermal stability properties of the matrix. [36,37] Herein, montmorillonite (MMT) clay has been applied to the polymer matrix to enhance the mechanical, barrier, and thermal stability properties of the matrix.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and evaluation of acrylated epoxidized castor oil‐toughened diglycidyl ether of bisphenol A nanocomposites

2015

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Castor oil-based epoxy monomer was prepared using a two-step approach: epoxidation of castor oil, followed by acrylation of epoxidized castor oil. A bio-based diglycidyl ether of bisphenol A (DGEBA) epoxy nanocomposites was prepared by the incorporation of organo-modified montmorillonite (OMMT) clay to the DGEBA/AECO system. The cured bio-based DGEBA epoxy nanocomposites at 0.80:0.2:0.001 g/g exhibited higher tensile strength (56 MPa), tensile modulus (1933 MPa), flexural strength (132 MPa), flexural modulus (2518 MPa), elongation (23.1 %), and impact strength (34 kJ/m 2 ). The nanocomposites at 0.6:0.4:0.001 g/g can easily bend up to 3608 without any damage; similarly, the 0.8:0.2:0.001 g/g system can bend up to 1808. Thermal behaviour of the bio-based epoxy systems was characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA). The obtained nanocomposites displayed a higher char yield (8.9 %) at 700 8C and glass transition temperature (108 8C) than the DGEBA/AECO systems. Further SEM analysis was used to study the morphological changes in the fractured surfaces of bio-based epoxy systems, which reveals that crack propagation decreases with addition of AECO to the DGEBA epoxy system.

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Reaction kinetics and physical properties of unsaturated polyester modified with methylacyloxylpropyl-POSS

Cited by 13 publications

References 14 publications

Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: Thermal and chemorheological modelling

Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: Thermal and chemorheological modelling

Optimization of Thermal and Mechanical Properties of Unsaturated Polyester Resin as a Binder in Polymer Concrete for Manufacturing Precision Tool Machine Bases

Fabrication and evaluation of acrylated epoxidized castor oil‐toughened diglycidyl ether of bisphenol A nanocomposites

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