Robust Hyperbranched Polyester-Based Anti-Smudge Coatings for Self-Cleaning, Anti-Graffiti, and Chemical Shielding

Abstract

In this work, a novel anti-smudge coating system was developed by using hydroxyl-terminated hyperbranched polyester as a coating precursor, mono-hydroxylterminated poly(dimethylsiloxane) (PDMS) as an antismudge agent, and hexamethylene diisocyanate trimer as a curing agent. The resultant coatings with 0.5 wt % PDMS content incorporated are highly transparent and liquid repellent. They exhibit striking repellency against various liquids and display remarkable self-cleaning performance. Water, hexadecane, salt solution, strong alkali solution, strong acid solution, pump oil, and crude oil could slide off the coated surface without leaving any traces, and the dirt on the coated surface could be readily removed by water or oil. Besides, these coatings show potential application for anti-fingerprint and anti-graffiti due to the exceptional repellency of coated surface against artificial fingerprint liquid, oil-based ink, paint, and water-based smudge. Furthermore, they also possess superb chemical shielding ability and thus endow substrates with remarkable protection against exposure to harsh chemical conditions. Moreover, these coatings are mechanically robust against extensive abrasion, impact, and bending without compromising antismudge properties, and they also exhibit excellent adhesion to various substrates. Therefore, these newly developed coatings have tremendous potential for widespread applications.

Preparation and mechanical properties of water‐dispersible hyperbranched polymer grafted carbon black/natural rubber composites by latex blending method

“…Therefore, how to effectively improve the dispersibility of CB is still a big challenge. As having attracted considerable attention due to their unique structures, good solubility, low viscosity, large number of active functional groups, not easily entangling molecular chain and facile synthesis procedures, [18][19][20] hyperbranched polymers have enormous prospects of applications in ink 21,22 coating [23][24][25] and drug carrier. [26][27][28] In recent years, hyperbranched polymers have been applied to the surface modification of carbon materials such as carbon nanotubes 29,30 and carbon fibers 31,32 for ease of obtaining the composites with good performance.…”

Functional Hyperbranched Polythioamides Synthesized from Catalyst‐free Multicomponent Polymerization of Elemental Sulfur†

“…Hyperbranched polymers with unique three dimensional topological structures, large number of branching sites and terminal groups, generally show different solubility, [ 1 ] viscosity, [ 2 ] mechanical properties, [ 3 ] ionic conductivity, [ 4‐5 ] and self‐assembly properties, [ 6 ] compared with the corresponding linear polymers, and are of great potential in the applications such as coating, [ 7‐8 ] lubricating, [ 9 ] light‐harvesting, [ 10 ] drug sustained release agents and membranes, [ 11‐14 ] polyelectrolytes, [ 4‐5 ] and luminescent materials. [ 6,15‐18 ] On the other hand, sulfur‐containing polymers including polythioethers, [ 19‐20 ] polythioesters, [ 21‐22 ] poly(monothiocarbonate)s, [ 23 ] polytrithiocarbonates, [ 24 ] polythioureas, [ 25 ] polythioamides, [ 26 ] polythiophenes, [ 27 ] and others, which generally enjoy high refractive indices, [ 28 ] excellent metal coordination ability, [ 25,29‐30 ] self‐repairing performance, [ 31 ] electrical conductivity, [ 27,32‐33 ] and degradability, [ 34‐36 ] have attracted much attention as advanced materials in the applications including optical materials, [ 37 ] sewage treatment materials, [ 30,38 ] self‐healing materials [ 31 ] and dielectric materials.…”

Anti-Graffiti Behavior of Oleo/Hydrophobic Nano-Filled Coatings Applied on Natural Stone Materials

“…This latter was likely restrained by the protective layer since cracking was not observed for the unprotected samples. Passing to analyze the specimens treated with nanoF and F products, the protected surfaces seemed to repel the spray paint, which mainly arranged as separate droplets [15,25,40,[62][63][64], leaving several portions of the stone uncovered. The distribution of the paint affected the color variations, leading to lower differences where the staining agent was repelled, as can be deduced from the data reported in Table 3.…”