Transparent, non-fluorinated, hydrophobic silica coatings with improved mechanical properties

Jeevajothi, K.; Subasri, R.; Raju, K. R. C. Soma

doi:10.1016/j.ceramint.2012.07.019

Cited by 29 publications

(16 citation statements)

References 10 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And the silica coating on the substrate surface performs poor washing durability of hydrophobic properties because of low compatibility and adhesion between the substrate surface and the silica gel coating. Silane agents and synthesized silane polymers containing functional groups have been proved to be the coupling agents to improve the washing durability of hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of durable hydrophobic cellulose surface from silane‐functionalized silica hydrosol via electrochemically assisted deposition

Guo

Chen

Rao

et al. 2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

Durable excellent hydrophobic surface on cellulose substrate was fabricated from the silica hydrosol functionalized with silane chemicals by a facile electrochemically assisted deposition technique. The silica hydrosol was synthesized using tetraethoxysilane (TEOS) as the precursor and sodium dodecylbenzene (SDBS) as the emulsifier under acidic conditions. The hydrophobic silane modifiers including octyltriethoxysiliane (OTES), dodecyltriethoxysiliane (DTES) and isooctyltriethoxysiliane (iso-OTES) and the silane-coupling agent c-mercaptopropyltriethoxysilane (MPTES) were used to dope the silica hydrosol for preparing durable hydrophobic cellulose surface. The cellulose surface modified with silane modifier iso-OTES exhibited the best hydrophobicity with water contact angle of 162.3 6 0.58 due to its non-polar and hydrolytically stable of ASi(C 8 H 17 ) groups. The addition of silane-coupling agent MPTES containing the ASH group led to good durability of hydrophobicity with water contact angle of 130.0 6 1.28 after 20 washing times.

show abstract

Section: Introductionmentioning

confidence: 99%

Fabrication of durable hydrophobic cellulose surface from silane‐functionalized silica hydrosol via electrochemically assisted deposition

Guo

Chen

Rao

et al. 2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The existence of bands near 1578 cm −1 and 1422 cm −1 is associated with the C=O stretching vibration of the acetate group [8], indicating the presence of acetate, which is deduced to be the possible functional group to anchor with silanol group of glass substrate. For DMDEOS (Figure 3(b)), the band observed at 3389 cm −1 is ascribed to the OH group, indicating that the silane group of DMDEOS is hydrolyzed by acid [44]. Two peaks centered at 2973 cm −1 and 1257 cm −1 are attributed to CH 3 stretching and bending vibrations from DMDEOS.…”

Section: Ft-ir Ft-ir Spectra Of Zno-nt Dmdeos Pdmsmentioning

confidence: 99%

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Basiron

Sreekantan

Saharudin

et al. 2018

Journal of Nanomaterials

View full text Add to dashboard Cite

In this present work, a superhydrophobic glass surface comprising zinc oxide nanotriangles (ZnO-nt) and nontoxic silylating agent was developed via a cost-effective spray-coating technology. ZnO-nt was synthesized by a hydrothermal method. Poly(dimethylsiloxane) (PDMS) and dimethyldiethoxysilane (DMDEOS) were used as nontoxic (nonfluoro) silylating agents. The morphology and crystallinity of ZnO-nt were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. ZnO-nt with polymeric silane (PDMS) exhibited maximum wettability as compared to nonpolymeric silane (DMDEOS). The water contact angle (WCA), sliding angle (SA), and surface roughness of ZnO-nt/PDMS-coated glass substrate under UV treatment were 165 ± 1°, 3 ± 1°, and 791 nm, respectively. The WCA of ZnO-nt/PDMS was higher (165°) than that of commercial ZnO/PDMS (ZnO-C/PDMS). ZnO-nt/PDMS was strongly attached to the glass substrate with good stability and adhesion. The reasons for improved hydrophobicity, adhesion, and mechanism of hierarchical microstructure formation on the glass substrate were explained in detail. PDMS was attached to the glass substrate via hydrogen bonds from solvated zinc acetate.

show abstract

“…Subasri et al investigated using surface-modified silica nanoparticles in combination with gels prepared from silanes and silazanes to coat soda lime glass [ 47 ]. They reported good hardness in combination with excellent water repellency and good transparency of the coatings.…”

Section: Improving Epoxy Resin Applications With Silica Nanoparticmentioning

confidence: 99%

Nanosilica-Toughened Epoxy Resins

Sprenger

2020

Polymers

View full text Add to dashboard Cite

Surface-modified silica nanoparticles are available as concentrates in epoxy resins in industrial quantities for nearly 20 years. Meanwhile, they are used in many epoxy resin formulations for various applications like fiber-reinforced composites, adhesives or electronic components; even in space vehicles like satellites. Some of the drawbacks of “classic” epoxy toughening using elastomers as a second phase, like lower modulus or a loss in strength can be compensated by using nanosilica together with such tougheners. Apparently, there exists a synergy as toughness and fatigue performance are increased significantly. This work intends to provide an overview regarding the possibilities of nanotoughening with silica, the industrial applications of such epoxy resin formulations and the most recent research results.

show abstract

Transparent, non-fluorinated, hydrophobic silica coatings with improved mechanical properties

Cited by 29 publications

References 10 publications

Fabrication of durable hydrophobic cellulose surface from silane‐functionalized silica hydrosol via electrochemically assisted deposition

Fabrication of durable hydrophobic cellulose surface from silane‐functionalized silica hydrosol via electrochemically assisted deposition

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Nanosilica-Toughened Epoxy Resins

Contact Info

Product

Resources

About