Transparent, Abrasion-Resistant Coatings for Metal Substrates

Jordens, Kurt; Wilkes, Garth L.

doi:10.1081/ma-100103342

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…Polyurethanes show superior abrasion resistance behavior because of the hydrogen bonding. In the literature, it has been reported that inorganic/organic hybrids increase the abrasion resistance 27. Figure 5 shows that increasing both TEOSPI and TEOS oligomers resulted in increased abrasion resistance because of the formation of the silicon–oxo cluster.…”

Section: Resultsmentioning

confidence: 94%

“…Between 50 and 130°C, E ′ decreased dramatically for all the films. The crosslink density of the films was calculated with the following equation:27 where ν e is the number of moles of elastically effective chains per cubic centimeter of the film, E ′(min) is the minimum storage modulus in the rubbery plateau, R is the gas constant and T is the absolute temperature. The glass‐transition temperature ( T g ) was obtained from the maximum of the α transition.…”

Section: Resultsmentioning

confidence: 99%

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Dual‐curable unsaturated polyester inorganic/organic hybrid films

Nebioglu

Teng

Soucek

2005

J of Applied Polymer Sci

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An unsaturated polyester, based on maleic anhydride, 1,6-hexanediol, and trimethylol propane, was formulated with tetraethylorthosilicate (TEOS) oligomers and a coupling agent to prepare inorganic/organic hybrid films. TEOS oligomers were prepared through the hydrolysis and condensation of TEOS with water, and 3-(triethoxysilyl)propylisocyanate was used as the coupling agent between the organic and inorganic phases. The hybrid materials were cured by moisture via sol-gel chemistry and by the UV curing of unsaturated polyesters. To compare the properties of the moisture-cured inorganic/organic hybrid films, a conventional 2K polyurethane system was also prepared. The tensile, adhesion, abrasion, and fracture toughness properties were investigated as functions of the coupling agent and relative amount of UV cure versus thermal cure. Although no difference could be observed in the tensile properties, the abrasion resistance, fracture toughness, and adhesion were enhanced by the incorporation of TEOS oligomers into polyurethane films. Also, the abrasion resistance, fracture toughness, and tensile properties were increased with both moisture and UV exposure.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Dual‐curable unsaturated polyester inorganic/organic hybrid films

Nebioglu

Teng

Soucek

2005

J of Applied Polymer Sci

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“…The crosslink density of the films was calculated from the eq. (2) 28 where, ν e is the number of moles of elastically effective chains per cubic centimeter of the film, E ′ (min) is the minimum storage modulus in the rubbery plateau.…”

Section: Resultsmentioning

confidence: 99%

Microgel formation and thermo‐mechanical properties of UV‐curing unsaturated polyester acrylates

Nebioglu

Soucek

2007

J of Applied Polymer Sci

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The effect of internal and terminal unsaturation on the properties of the acrylated polyester films was investigated. Four types of acrylated polyester resin were prepared using adipic acid, maleic anhydride, neopentyl glycol, trimethylolpropane, and acrylic acid. Terminal and internal double bond content as well as branching was adjusted by the molar quantities of trimethylolpropane and maleic anhydride, respectively. A reactive diluent, trimethylolpropane triacrylate (TMPTA), was also used. A three-factor, three-level Box-Behnken design was used to investigate complex nonlinear relationships. Dynamic mechanical, fracture toughness, and tensile properties were evaluated with respect to the amount of terminal and internal unsaturation, and reactive diluent concentration. It was found that microgel formation extensively affects the final UV-cured film properties. Small quantities of microgels function as micro-support units, whereas high extent of microgelation causes phase separation through cluster formation and hence, decreases the mechanical properties. It is essential to control the extent of microgelation and phase separation to optimize product performance.

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Engineered Nanomaterial Hard Coatings on Metal and Polymer Substrates

Singhal¹,

Skandan²

2002

Surface Engineering

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Transparent, Abrasion-Resistant Coatings for Metal Substrates

Cited by 9 publications

References 8 publications

Dual‐curable unsaturated polyester inorganic/organic hybrid films

Dual‐curable unsaturated polyester inorganic/organic hybrid films

Microgel formation and thermo‐mechanical properties of UV‐curing unsaturated polyester acrylates

Engineered Nanomaterial Hard Coatings on Metal and Polymer Substrates

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