Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites [PDF]
Shape memory nanocomposites of polyurethane (PU)-clay were fabricated by melt mixing of PU and nano-clay. Based on nano-indentation and microhardness tests, the strength of the nanocomposites increased dramatically as a function of clay content, which is
Chen, Zhen Guo,+7 more
core +5 more sources
Surface treatment with UV-ozone to improve adhesion of vulcanized rubber formulated with an excess of processing oil [PDF]
An excess of processing oil was intentionally added in the formulation of vulcanized styrene-butadiene rubber for analyzing the effect on the treatment with UV radiation combined with ozone (UV-ozone) in improving the adhesion to waterborne polyurethane ...
Martín-Martínez, José Miguel+1 more
core +2 more sources
In recent years, flexible strain sensors for human movement monitoring have received great attention. However, the preparation of strain sensors with high sensitivity and tensile strength has remained a challenge. In this study, the mechanical properties
Yunfei Zhang+3 more
doaj
Comparative Study on the Performance of Solvent-Based and Waterborne Polyurethane Top-Coats in Laboratory Accelerated Test and Field Test [PDF]
Taking solvent-based acrylic polyurethane top-coat and waterborne aliphatic polyurethane top-coat as the research objects, this study explored the effects of two laboratory accelerated aging methods (neutral salt spray, xenon lamp aging) and natural ...
MA Kaijun, XUE Fengying, ZHANG Zhiyou, CHEN Zhangfeng
doaj +1 more source
Design, Preparation and Properties of Polyurethane Dispersions via Prepolymer Method
A waterborne polyurethane dispersion for foamed synthetic leather base was designed and prepared using prepolymer method. There are many variables in the emulsification and chain-extension process of waterborne polyurethane (WPUR) dispersions prepared by
Lijuan Sun, Hongmei Jiang
doaj +1 more source
A machine learning accelerated inverse design of underwater acoustic polyurethane coatings with cylindrical voids [PDF]
Here, we report the development of a detailed "Materials Informatics" framework for the design of acoustic coatings for underwater sound attenuation through integrating Machine Learning (ML) and statistical optimization algorithms with a Finite Element Model (FEM).
arxiv
Nanocellulose-Reinforced Polyurethane for Waterborne Wood Coating
With the enhancement of people’s environmental awareness, waterborne polyurethane (PU) paint—with its advantages of low release of volatile organic compounds (VOCs), low temperature flexibility, acid and alkali resistance, excellent solvent ...
Linglong Kong+10 more
doaj +1 more source
Low-Threshold and Narrow Linewidth Diffusive Random Lasing in Rhodamine 6G Dye-Doped Polyurethane with Dispersed ZrO$_2$ Nanoparticles [PDF]
We report on low-threshold and narrow linewidth intensity feedback random lasing in Rhodamine 6G dye-doped polyurethane with dispersed ZrO$_2$ nanoparticles. Depending on the dye/particle concentration, the lasing threshold is (6.8--15.4) MW/cm$^2$ and the linewidth is (4--6) nm. The lasing threshold as a function of nanoparticle concentration is found
arxiv +1 more source
Design, synthesis and characterization of inks based in waterborne polyurethane urea dispersions suitable for direct ink writing 3D-printing. [PDF]
330 p.A series of waterborne polyurethane urea dispersions were prepared to study their viability as inks for direct ink writing 3D-printing. In this context, waterborne polyurethane urea dispersions were successfully synthesized using a hydrophilic ...
Vadillo del Ser, Julen
core +3 more sources
Herein, a simple and efficient strategy was proposed to improve the gas barrier properties of waterborne polyurethane (WPU). Graphene oxide was first modified with dopamine and then cross-linked by boric acid (BA) to bring the graphene sheets closer ...
Xinxin Tian+12 more
doaj +1 more source