16. Sep 2022 | Production & Lab
In a new paper, the polyacrylic acid modified graphene oxide (PAA-nGO) with high dispersion stability in a wide range of pH (4–11) was prepared via two step amidation reaction. Significantly, PAA-nGO can be uniformly dispersed in WPU as bifunctional additive to prepare WPU/PAA-nGO coatings with enhanced mechanical property, chemical resistance and abrasion durability. The as-prepared WPU/PAA-nGO coating exhibited improved tensile strength (18.12 MPa) and tear strength (38.07 kN/m), which were 56.1% and 51.5% higher than those of pure WPU coating, respectively.
Interestingly, WPU/PAA-nGO coating showed improved chemical resistance. Notably, abrasion durability of WPU/PAA-nGO coating was significantly enhanced, and the mass loss rate was decreased by 77.1%. Overall, the new work provided a potential strategy for improving the mechanical property, chemical resistance and abrasion durability of WPU based coatings by introducing PAA-nGO with well dispersion and high stable in a wide pH range.
The study has been published in Progress in Organic Coatings, Volume 170, September 2022.
Books
The chemistry of polyurethane coatings is of great significance in many applications worldwide. Moreover, their development potential has yet to be exhausted by any means. New applications are being identified and the product range will be further development. The book provides a comprehensive overview of the chemistry and the various possible application fields of polyurethanes. It starts by illustrating the principles of polyurethane chemistry, enabling the reader to understand the current significance of many applications and special developments. Newcomers learn about the key concepts of polyurethane chemistry and the main application technologies, while experienced specialists will value the insights on current trends and changes.
There was an error while sending your comment. Please try again.
Your comment was too long. There are a maximum of 2048 symbols allowed!
