Effect of TiO2 on the mechanical and adhesion properties of RTV silicone elastomer coatings

Mirabedini, S.M.; Mohseni, Mojtaba; Pazokifard, Shahla; Esfandeh, Masoud

doi:10.1016/j.colsurfa.2007.09.044

Cited by 80 publications

(47 citation statements)

References 19 publications

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“…Mark et al (1984) investigated the mechanical properties of such in situ networks and showed that increasing the silica content generated in situ leads to an increased elastic modulus, but there is a tradeoff between FR properties and mechanical durability. Although the best mechanical performance has been seen with harder coatings, the best FR properties are obtained with softer materials (Stein et al 2003a(Stein et al , 2003bPerera 2004;Mirabedini et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Although the bond coat is responsible for bonding to a substratum and providing mechanical strength, many attempts have been made to enhance the mechanical properties of the silicone top coat. Some studies (Yuan and Mark 1999;Mirabedini 2008;Fang et al 2010;Rath et al 2010) have been carried out to alleviate the durability problems of PDMS-based coatings. Due to the good mechanical properties of the cured epoxy resin materials, Rath et al (2010) employed epoxy resin to modify PDMS-based FR coatings.…”

Section: Introductionmentioning

confidence: 99%

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Silicone fouling-release coatings: effects of the molecular weight of poly(dimethylsiloxane) and tetraethyl orthosilicate on the magnitude of pseudobarnacle adhesion strength

2012

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A series of poly(dimethyl siloxane) (PDMS)/silica nanocomposites were synthesized utilizing a sol gel method. The samples were evaluated using pseudobarnacle adhesion and tensile strength tests. The effects of the molecular weight of the PDMS and the size and structure of the silica domains on biofouling release and the mechanical behavior of the PDMS/silica materials were investigated. Three different molecular weights (18,000, 49,000 and 79,000 g mol 71 ) of hydroxyl-terminated PDMS (HT-PDMS) were used to prepare the nanocomposites with three different weight ratios (1:1, 3:1 and 5:1) of HT-PDMS to tetraethyl orthosilicate (TEOS). TEOS served as a crosslinker to form PDMS networks and as a precursor to form silica domains. Two different variants of TEOS with regard to its degree of polymerization (n) (monomeric type: n ffi 1 and oligomeric type: n ffi 5) were used for in situ formation of silica particles via the sol-gel process. The mechanical properties of the composites were characterized using stress-strain isotherms. All the mechanical properties evaluated (Young's modulus, tensile strength, energy required for rupture, elongation at break) improved with increases in the molecular weight of the HT-PDMS and the silica content. The pseudobarnacle adhesion test was used to examine the fouling-release (FR) properties of coatings applied on aluminum plates. The rupture energy and tensile strength increased substantially when oligomeric TEOS was employed in the PDMS/silica composites. Scanning electron microscopy (SEM) was used to investigate the structure of the silica domains. It was found that the use of oligomeric TEOS in higher molecular weight PDMS samples with higher PDMS/TEOS weight ratios led to low pseudobarnacle adhesion strengths of *0.3 MPa, which is in the range of commercial FR coatings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silicone fouling-release coatings: effects of the molecular weight of poly(dimethylsiloxane) and tetraethyl orthosilicate on the magnitude of pseudobarnacle adhesion strength

2012

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“…Mirabedini et al [41] studied the silicone elastomer coatings containing TiO 2 . They investigated the effect of TiO 2 on the modulus, hardness, tensile strength and abrasion resistance of resultant silicone elastomer coating.…”

Section: Investigations On Hybrid Silicone Coatingsmentioning

confidence: 99%

Nanomechanical Analysis of Hybrid Silicones and Hybrid Epoxy Coatings—A Brief Review

Tiwari¹

2012

ACES

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This review article is written on the investigations of nanomechanical properties of coatings by using nanoindentation techniques. The focus is on the studies that were conducted on epoxy polymer, silicones and their hybrid materials. The article describes a large number of developmental studies that are conducted on coatings. Materials properties such as nanoindentation hardness, modulus, scratch, wear and viscoelastic behavior have been described. Moreover, the article summarizes various studies that mention the use of different nanoparticles in coating formulations that could improve the mechanical strength and service life span of the coatings. The mode and mechanism of material's failure has been outlined and discussed.

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“…Nano TiO 2 particle is one of the promising inorganic nano fi llers used in polymer matrix composites to enhance the mechanical properties (Nayak et al, 2016;Bardak et al, 2016). Among the investigated inorganic nano fi llers, TiO 2 nanopowder is being increasingly investigated because it is non-toxic, chemically inert, low cost, corrosion resistant and has a high refractive index, UV fi ltration capacity and high hardness (Mirabedini et al, 2008).…”

mentioning

confidence: 99%

The Effect of Nano TiO2 and Nano Boron Nitride on Mechanical, Morphological and Thermal Properties of WF/PP Composites

2018

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Effect of TiO2 on the mechanical and adhesion properties of RTV silicone elastomer coatings

Cited by 80 publications

References 19 publications

Silicone fouling-release coatings: effects of the molecular weight of poly(dimethylsiloxane) and tetraethyl orthosilicate on the magnitude of pseudobarnacle adhesion strength

Silicone fouling-release coatings: effects of the molecular weight of poly(dimethylsiloxane) and tetraethyl orthosilicate on the magnitude of pseudobarnacle adhesion strength

Nanomechanical Analysis of Hybrid Silicones and Hybrid Epoxy Coatings—A Brief Review

The Effect of Nano TiO2 and Nano Boron Nitride on Mechanical, Morphological and Thermal Properties of WF/PP Composites

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