Synthesis of low-VOC unsaturated polyester coatings for electrical insulation

The objective of this research is to develop an unsaturated polyester (UPE) varnish with low-volatile organic compounds (VOCs). Instead of using a solvent, the solvent-free varnish incorporates a reactive diluent to reduce viscosity and a catalyst to accelerate curing. To achieve this, vinyl toluene...

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Bibliographic Details
Published in:e-Polymers 2023-10, Vol.23 (1), p.pp. 2069-76
Main Authors: Gümüş, Selinay, Aksoy, Kaan, Aytaç, Ayşe
Format: Article
Language:English
Subjects:
Acids
Butanediol
Chromatography
Coatings
Cooling
Curing
Curing agents
Electrical insulation
Electrical properties
Fourier transforms
Free radicals
Fumaric acid
Gas chromatography
insulating varnish
Insulation
low VOC
Materials science
Polyesters
Polymerization
Polymers
Reagents
Resins
Sebacic acid
Solvents
Toluene
UPE
Viscosity
VOCs
Volatile organic compounds
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Summary:The objective of this research is to develop an unsaturated polyester (UPE) varnish with low-volatile organic compounds (VOCs). Instead of using a solvent, the solvent-free varnish incorporates a reactive diluent to reduce viscosity and a catalyst to accelerate curing. To achieve this, vinyl toluene and 1,4-butanediol dimethacrylate were employed as curing agents. Sebacic acid (SA) and fumaric acid were utilized to create UPE coatings for electrical insulation. Various tests and measurements were made to evaluate the physical, thermal, and chemical structure determination, and electrical properties of the synthesized resins. Given the increasing demand for eco-friendly and low-VOC products, gas chromatography was employed to determine VOC levels. The study demonstrated that the electrical volume resistance of cross-linked coatings containing FA was 1.58 × 10  Ω·cm, whereas coatings containing SA exhibited a measurement of 6.96 × 10  Ω·cm. VOC levels in the UPE coatings were found to be in the range of 2.10–3.60%.
ISSN:1618-7229
2197-4586
1618-7229
DOI:10.1515/epoly-2023-0125