Research for waterborne polyurethane/composites with heat transfer performance: a review

Study on structure-induced heat transfer capabilities of waterborne polyurethane membranes

“…To address this issue, many methods focused on fabrication of polymer-based composites with adding high TCC of fillers were reported: introducing 3 wt% multiwalled carbon nanotubes (MWCNTs) into semicrystalline polyurethane (PU) dispersions increased TCC up to 0.47 W/m K 2 wt% graphene oxide (GO) in WPU led to 0.33 W/m K with only 38 % increases, etc. [14][15][16]. However, the experimental TCC only partly reflects the theoretical values, because the poor compatibility and ununiform distribution of unmodified fillers in polymer matrixes would led to interface thermal resistance.…”

“…In this study, series of WPU emulsions were synthesized to select optimal prepolymer components by referring to optimization orthogonal arrays, then based on the fixed prepolymer components a further analysis of varying hard segment content and hydrophilic fragments on structural features were carried out afterwards [13,16,[20][21][22]. Finally, thermal annealing treatment on WPU membranes was conducted as well.…”

Polyurethane: Recent Engineering Contributions

“…It also displayed very good thermal stability, flame retardancy, storage stability, and reinforcement [60]. The heat conducting with focus on the enhancement of thermal conductivity of WPU composites through compatibility and feasibility of hybrid techniques is reviewed [61]. In a research PU foam was filled with paper waste sludge (5% by foam mass).…”

Mechanically Strong, Wet Adhesive, and Self-Healing Polyurethane Ionogel Enhanced with a Semi-interpenetrating Network for Underwater Motion Detection

“…Therefore, how to improve the mechanical properties and fatigue resistance of materials is crucial for the development of flexible sensors underwater. Given the unique material structure (a large number of hydrogen-bonding interactions between chain segments and micro-phase separation between soft and hard segments) and the resulting excellent mechanical properties, polyurethane (PU) is widely used in electronic devices − and in other fields in various forms such as elastomers − and coatings. , Therefore, the introduction of PU into substrate materials can lead to effective enhancement of a flexible sensor’s mechanical properties. In addition, constructing an interpenetrating network (IPN) structure is considered another effective strategy to improve the mechanical properties of gel materials .…”