High-end applications of unsaturated polyester composites

Mehdipour‐Ataei, Shahram; Aram, Elham

doi:10.1016/b978-0-323-99466-8.00009-5

Applications of Unsaturated Polyester Resins 2023

DOI: 10.1016/b978-0-323-99466-8.00009-5

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High-end applications of unsaturated polyester composites

Shahram Mehdipour‐Ataei¹,

Elham Aram²

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2024

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Cited by 5 publications

References 62 publications

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Reactivity of the p‐Cymene‐Ruthenium Complex with Two Phenylamines for Metathesis Polymerization of Norbornene Compared to the Reactivity of Complexes with a Single Benzylamine or Dibenzylamine

A. Silva,

Santiago,

Ellena

et al. 2024

Eur J Inorg Chem

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The complexes [RuCl(Cy)(NH2Ph)2]Cl (1), [RuCl2(Cy)(NH2Bz)] (2), and [RuCl2(Cy)(NHBz2)] (3) were obtained under the same conditions from [RuCl2(Cy)]2; Cy = η6‐p‐cymene, Ph = phenyl, and Bz = benzyl. X‐ray crystallography showed the additional NH2Ph ligand in 1, differing from the neutral mono‐amine complexes 2 and 3. The number of amines in the complexes does not show clear correlations with s‐donor character or steric hindrance of the amines. Different reactivities were observed for ROMP of norbornene (NBE), measured from batch reactions and by kinetic studies using Raman and 1H NMR spectroscopy, with semiquantitative conversions: with 1 up to 30 °C and around 40% with 2 and 3. DFT calculations confirmed the proposal that the reactions occur with the release of an amine in complex 1 through a dissociative mechanism, while complexes 2 and 3 react through an associative mechanism with loss of amines. The presence of the amine in the propagation species of 1 indicates the participation of the amine as an auxiliary ligand. All carbene species are of the η2‐p‐cymene type, and the catalytic cycle occurs with a 14‐16‐14 electron counting mechanism.

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Reactivity of the p‐Cymene‐Ruthenium Complex with Two Phenylamines for Metathesis Polymerization of Norbornene Compared to the Reactivity of Complexes with a Single Benzylamine or Dibenzylamine

A. Silva,

Santiago,

Ellena

et al. 2024

Eur J Inorg Chem

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Functionalized Unsaturated Polyester as Electrical Insulation Varnish

Gümüş,

Aksoy,

Aytac

2024

Macro Chemistry & Physics

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Silsesquioxanes (SQs) are mostly used to provide high‐temperature electrical insulation of resins. In this study, SQ was used to functionalize unsaturated polyester (UPE) varnish and investigate the effect of functionalization on the thermal and electrical properties of UPE varnishes. The solvent‐free varnish incorporates a reactive diluent to decrease viscosity and a catalyst to expedite hardening, eliminating the need for solvents. Vinyl toluene (VT) and 1, 4‐butanediol di methacrylate (BDDMA) serve as hardening agents, consistent with prior research. Various characterization tests, including FTIR, TGA, assessment of thermal conductivity coefficient, and determination of electrical volume‐surface resistance, were conducted to determine the physical, thermal, chemical, and electrical properties of the synthesized SQ functionalized UPE (UPES) varnishes. Results indicate that the UPES‐BDDMA varnish demonstrates the highest thermal decomposition temperature at 438.0 °C, while the UPES‐VT varnish exhibits the highest electrical volume resistance of 2.85 × 1015 Ω·cm. Volatile organic compounds (VOCs) levels in UPE coatings range between 4.9% and 5.10% reflecting the growing demand for eco‐friendly products. It has been shown in this study that the use of BDDMA and VT reactive monomers in the synthesis of SQ functionalized UPE resin and the properties of the resulting varnishes, especially electrical insulation and thermal stability, are improved. This article is protected by copyright. All rights reserved

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The Effect of Ru/PMC Hydrogel Composite for Water-Splitting Applications

Caglar,

Zahmakiran,

Kivrak

2024

Electrocatalysis

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High-end applications of unsaturated polyester composites

Cited by 5 publications

References 62 publications

Reactivity of the p‐Cymene‐Ruthenium Complex with Two Phenylamines for Metathesis Polymerization of Norbornene Compared to the Reactivity of Complexes with a Single Benzylamine or Dibenzylamine

Reactivity of the p‐Cymene‐Ruthenium Complex with Two Phenylamines for Metathesis Polymerization of Norbornene Compared to the Reactivity of Complexes with a Single Benzylamine or Dibenzylamine

Functionalized Unsaturated Polyester as Electrical Insulation Varnish

The Effect of Ru/PMC Hydrogel Composite for Water-Splitting Applications

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