Construction of durable superhydrophobic and anti-icing coatings via incorporating boroxine cross-linked silicone elastomers with good self-healability

Abstract

The fragility of the micro-nano structure makes the superhydrophobic coating highly susceptible to stress, resulting in a decrease in its superhydrophobic and anti-icing performance. In this work, we proposed a...

Preparation of superhydrophobic asymmetric vitrimer coating with high porosity and the key role of hierarchical pocket structure on long freeze delay time and high durability

“…The adhesion strength of BVSP3 is lower than BVSP1 and BVSP2, which is attributed to BVSP3 had better hydrophobic properties. However, the adhesion strength is higher than hydrophobic silicone elastomer (PDMS) (<20 kPa) 37,38 . Because of existence of hierarchical mirc/nano textured surface, the formation of ice between the micropillars compromises the ice‐repellency of the surface and thus increases ice adhesion 39 .…”

“…However, the adhesion strength is higher than hydrophobic silicone elastomer (PDMS) (<20 kPa). 37,38 Because of existence of hierarchical mirc/nano textured surface, the formation of ice between the micropillars compromises the ice-repellency of the surface and thus increases ice adhesion. 39 Nevertheless, in comparison to micro-textured superhydrophobic surfaces (100-200 kPa), 40,41 BVSP3 possess relatively low ice adhesion (<100 kPa), which could be attributed to the introduction of low surface energy coating (PDMS) on BVSP3.…”

Self-Healing Silicone Materials: Looking Back and Moving Forward

“…Figure 3 presents the SHSMs based on covalent interactions such as reversible Diels–Alder interactions [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ], disulfide [ 47 , 48 , 49 ], boronic ester [ 50 ], boroxine [ 51 , 52 ], imine [ 53 , 54 , 55 , 56 , 57 ], hydrazine-based [ 58 ], thiourethane [ 59 ], hindered urea bonds [ 60 ], and metal–ligand interactions [ 19 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 ]. Some examples of covalent SHSMs are shown in Table 1 .…”

“…[ 51 ], SH is initiated by water or the addition of a Lewis base. In 2022, Liang H. et al [ 52 ] obtained similar SH polymer networks based on boroxine cross-links with good SH ability ( η = 98% after 4 h of water immersion), anti-icing performance, and superhydrophobic properties [ 12 ].…”

“…In view of the foregoing, SHSMs based on covalent interactions exhibit predominantly non-autonomous SH properties and require external action, which is associated with stronger bonds in their structure and increased dissociation energy. For example, (i) heating (in the case of Diels–Alder interactions [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ], disulfide [ 47 , 48 , 49 ], thiourethane [ 59 ]), (ii) UV, and (iii) the additional reaction agent (the addition of water in the case of imine [ 53 , 54 , 55 , 56 , 57 ], boronic ester [ 50 ] and boroxine bonds [ 51 , 52 ]). This cannot be called an unambiguous advantage or disadvantage since, in some cases, SHSMs may be in demand if they self-heal only under special conditions.…”