Anti-icing agent releasing diatomaceous earth/SBS composites

Abstract

Anti-icing agent release from diatomaceous earth/SBS composites increases the freezing time of water droplets on the surface.

Low ice adhesion anti-icing coatings based on PEG release from mesoporous silica particles loaded SBS

“…DE having much smaller specific surface area of 65 m 2 g -1 retained water soluble polymers (PEG, PEOX) in its micron sized pores. 17 The relatively slow release (~2 hours) of PEG-10K from filled MSP in water also supports that PEG was retained in the pores of MSP. Fig.…”

“…1 Passive anti-icing coatings have been considered as an easy, economical and eco-friendly method to overcome the icing problems due to their ability to suppress ice formation and accumulation without any energy 3 input, but their wide-spread use in applications still remains to be a challenge. [2][3][4][5][6] Icephobic coatings can delay ice formation [7][8][9] , lower ice adhesion strength 4,6,10 and allow easy removal of accumulated ice 11 by various mechanisms such as superhydrophobicity 5,8,12,13 , sacrificial lubricants 6,14 , interfacial slippage 15,16 and release 17,18 . Typically, the ice adhesion strength on these coatings is lower than 100 kPa.…”

“…35 We have previously reported Diatomaceous Earth (DE) loaded Styrene-Butadiene-Styrene (SBS) based composites as polyethylene glycol (PEG) releasing anti-icing coatings which delayed the freezing time of water droplets. 17 DE was used as PEG carrier in the hydrophobic SBS matrix.…”

Low ice adhesion anti-icing coatings based on PEG release from mesoporous silica particle loaded SBS

“…Free-standing MSP/SBS composites were filled with PEG (PEG-600 or PEG-10k) by dipping the composite films in PEG solution in an acetone/diethyl ether (70/30 by volume) binary solvent mixture. 18 In the binary solvent mixture of acetone/ diethyl ether, the SBS matrix is swollen and this allows the penetration of the dissolved PEG into the pores of MSP dispersed throughout the SBS matrix. PEG-10k (solid at room temperature) was primarily chosen to quantify the filled/ released amount of PEG by UV-vis spectroscopy using the modified Dragendorff method, because the sensitivity of the method is better for higher molar masses of PEG.…”

“…[2][3][4][5][6] Icephobic coatings can delay ice formation, [7][8][9] lower ice adhesion strength 4,6,10 and allow easy removal of accumulated ice 11 by various mechanisms such as superhydrophobicity, 5,8,[12][13][14] sacrificial lubricants, 6,15 interfacial slippage 16,17 and release. 18,19 Typically, the ice adhesion strength on these coatings is lower than 100 kPa. The ice adhesion strength was estimated to be lower than 12 kPa for the accumulated ice to easily shed off under the action of wind or gravity.…”