Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Raw materials  > Coatings binders  > Performance enhancement of oxidised bitume...

Monday, 16 September 2019
pdf
Raw materials & technologies, Raw materials, Coatings binders

Performance enhancement of oxidised bitumen binder using epoxy resin

Friday, 9 December 2016

The effect of an epoxy resin modifier on the performance of an oxidised bitumen binder was studied by Iranian researchers.

The epoxy resin modifier was added to the oxidised bitumen for application in the pipeline industry. Source: Bernd Sterzl/pixelio.de

The epoxy resin modifier was added to the oxidised bitumen for application in the pipeline industry. Source: Bernd Sterzl/pixelio.de

Four types of analysis were conducted including physical, mechanical, viscoelastic and thermal properties in order to study the impact of the epoxy resin on the bitumen performance.

Low content reinforces properties

Fourier transform infrared (FTIR) and differential scanning calorimetry (DSC) studies revealed the reaction of the epoxy functional groups with the oxidised bitumen at elevated temperature. The DSC results of the epoxy-modified bitumen showed two glass transition temperature (Tg), which are related to the maltene part of the bitumen (Tg1) and the physical adsorption and/or chemical interactions between epoxy resin and asphaltenes of the bitumen (Tg2). 5% (w/w) of epoxy resin addition to the bitumen leads to the highest increase in softening point temperature of the bitumen (about 11 °C). Evaluation of the epoxy-modified bitumen showed an increase in hardness compared to the neat bitumen using shore ‘A’ test.

Improvement in tensile strength

Different epoxy-modified bitumens demonstrated an enhancement of storage modulus and also decrease in tan δ using dynamic mechanical thermal analysis (DMTA). Improvement in tensile strength and decrease in toughness and also elongation at break were observed for the oxidised bitumen modified with the epoxy resin. Thermogravimetric analysis (TGA) proved that the epoxy resin improved thermal stability of the bitumen.

The study is published in: Progress in Organic Coatings, Volume 102, Part B, January 2017, Pages 178–185

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register