Next Article in Journal
Surface and Structural Properties of Medical Acrylonitrile Butadiene Styrene Modified with Silver Nanoparticles
Previous Article in Journal
A Review on the Partial and Complete Dissolution and Fractionation of Wood and Lignocelluloses Using Imidazolium Ionic Liquids
Previous Article in Special Issue
Role of Charge Regulation and Fluctuations in the Conformational and Mechanical Properties of Weak Flexible Polyelectrolytes
Open AccessArticle

The Effect of Extender Particle Size on the Glass Transition Temperature of Model Epoxy Coatings

Jotun Performance Coatings, Jotun A/S, 3211 Sandefjord, Norway
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(1), 196; https://doi.org/10.3390/polym12010196
Received: 11 December 2019 / Revised: 6 January 2020 / Accepted: 10 January 2020 / Published: 12 January 2020
(This article belongs to the Special Issue Nordic Polymer Days)
Inorganic extenders are important constituents of 2K thermosetting epoxy-amine coatings and their physical properties play an important role in the final properties of the organic coatings. The effects of extender particle size and loading (i.e., the amount of extender in component A or in the total formulation) on the glass transition temperature (Tg) of model epoxy-amine coatings were studied in this work with differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The obtained results show that the particle size and loading of feldspar particles (from 25 wt% to 70 wt%) do not influence the glass transition temperature of the model epoxy-amine coating significantly. In general, the smaller the particle size the lower the glass transition temperature of the coating but this depression in Tg seems negligible when seen relative to the change in extender particle size. Similar observations are reported for two model coatings having the same lamda (Λ) value but with silica of very different particle sizes (i.e., nanosilica and micron sized silica). View Full-Text
Keywords: inorganic extender; epoxy-amine coating; feldspar; nanosilica; glass transition temperature inorganic extender; epoxy-amine coating; feldspar; nanosilica; glass transition temperature
Show Figures

Figure 1

MDPI and ACS Style

Bashir, M.A.; Jakobsen, M.G.; Farstad, V.B. The Effect of Extender Particle Size on the Glass Transition Temperature of Model Epoxy Coatings. Polymers 2020, 12, 196.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop