Publication detail

Issue of epoxy based coatings system crystallization and effect of partial crystallinity on mechanical parameters

VYHNÁNKOVÁ, M. HODUL, J. BYDŽOVSKÝ, J.

Original Title

Issue of epoxy based coatings system crystallization and effect of partial crystallinity on mechanical parameters

Type

conference paper

Language

English

Original Abstract

Crystallization of bisphenol A-based and bisphenol F-based epoxy resins is the common property of these oligomers. However, producers of paints, coatings and other systems based on these epoxy resins are making efforts to slow down the crystallization process as much as possible, thereby prolong the shelf life, while improving the competitiveness of their products. The main topic is the generalization of factors influencing the crystallization process of bisphenol A-based and bisphenol F-based epoxy resins, the validation of new approaches to possibility of influencing their crystallization process, and the determination of possibility of using a certain degree of crystallinity of bisphenol A-based and bisphenol F-based epoxy resins when preparing and producing paint and coating systems based on the epoxy resins. Two types of the epoxy resins used, in particular, in formulations of paint and coating and other systems, namely: diglycidyl ether of bisphenol A (DGEBA) and diglycidyl ether of bisphenol F (DGEBF), were included into experiments. The tendency to crystallize not only for the pure epoxy resins, but also various mixtures with reactive diluents, fillers, etc. was determined according to the ISO 4895 Plastics – Liquid epoxy resins – Determination of tendency to crystallize. Further, the crystallinity of individual samples was determined. The effectiveness of potentially active nucleating agents such as precipitated calcium carbonate, DGEBA, and DGEBF crystals, etc. was selected and tested according to the ISO 4895 standard. The effectiveness of potentially active admixtures with crystallization retardation effect was selected and tested according to the ISO 4895 standard. Selected samples of the epoxy resins with a specified degree of crystallinity were cured with 3-aminomethyl-3,5,5-trimethylcyclohexylamine (IPD) based crosslinking agent. Mechanical parameters such as compressive strength, flexural strength were determined. The influence of crystallinity on selected mechanical parameters was observed.

Keywords

floor coatings, crystallization, crystallinity, epoxy resin, nucleating agents.

Authors

VYHNÁNKOVÁ, M.; HODUL, J.; BYDŽOVSKÝ, J.

Released

23. 8. 2018

Publisher

Trans Tech Publications Ltd.

Location

Switzerland

ISBN

978-3-0357-1361-9

Book

19th International Conference on Rehabilitation and Reconstruction of Building 2017

Edition

Michaela Kostelecká

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

776

State

Swiss Confederation

Pages from

147

Pages to

152

Pages count

6

URL

https://www.scientific.net/KEM.776.147

BibTex

@inproceedings{BUT142054,
  author="Michaela {Seidlová} and Jakub {Hodul} and Jiří {Bydžovský}",
  title="Issue of epoxy based coatings system crystallization and effect of partial crystallinity on mechanical parameters",
  booktitle="19th International Conference on Rehabilitation and Reconstruction of Building 2017",
  year="2018",
  series="Michaela Kostelecká",
  journal="Key Engineering Materials (print)",
  volume="776",
  pages="147--152",
  publisher="Trans Tech Publications Ltd.",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.776.147",
  isbn="978-3-0357-1361-9",
  issn="1013-9826",
  url="https://www.scientific.net/KEM.776.147"
}