Investigating the variations in properties of 2-pack polyurethane clear coat through separate incorporation of hydrophilic and hydrophobic nano-silica

Effect of Nanoalumina on the Electrochemical and Mechanical Properties of Waterborne Polyurethane Composite Coatings

“…However, at higher loading level ( Figure 5(c)), heterogeneities are clearly observed similar to that of neat coating. This can be attributed to improper pigment to polymer ratio resulting in the agglomerated site consequently leading to lose of their desired functional properties [12,27]. AFM topographic height images ( Figure 6) for humidityexposed samples also provide the parallel observations.…”

“…They can be added to a clear coating formulation with little or no adverse impact on visual characteristics. Nanoparticles most commonly used in coatings are SiO 2 [7,[11][12][13], TiO 2 [16], ZnO [6,8,9,17], Al 2 O 3 [18][19][20][21], Fe 2 O 3 [22], and CaCO 3 [23], ZrO 2 [24]. Use of nanoparticles is most commonly based on the inherent properties they possess.…”

Effects of Environmental Conditions on Degradation of Automotive Coatings

“…Schematic illustration of how scratch indenters affect coating deformation type (Hara et al, 2000). (Tahmassebi et al, 2010;Ramezanzadeh et al, 2010;Zhou et al, 2002;Jalili et al, 2007).…”

“…This indicates that incorporation of nano silica into acrylic melamine not only has not any effect on weathering durability, it enhances its resistance during weathering. The better weathering performance of clear coats containing nanosilica is assigned to the ability of nano silica particles to absorb the ultra violet and visible light, resulting in less degradation in nano silica-containing clear coats (Jalili, 2007;Zhou, 2002). Another preventive strategy for improving the resistance of coatings against photodegradation is the use of quenchers and radical scavengers.…”

Synergistic effect of graphene and silicon dioxide hybrids through hydrogen bonding self-assembly in elastomer composites

“…SiO 2 applied in composites have attracted much research attention [18][19][20][21][22] in the last few decades owing to the superior properties of SiO 2 nanoparticles such as toughness, tensile strength, thermal stability, gas separation performance, high scattered performance, and thermal resistance 23 and they have various applications in high-performance coatings, 24,25 bers, 26,27 bioactive polymers, 28,29 rubber composites etc. [30][31][32] The nanometer-sized SiO 2 particles are used not only as a kind of ller, but also as reinforcing 33,34 and toughening 35 agents that can impart good mechanical properties, thermal stability, and toughness, as well as magnetic and optical properties to the polymers.…”