Effect of nano-silica on the mechanical properties of acrylic polyurethane coatings

Malaki, Massoud; Hashemzadeh, Yasser; Karevan, Mehdi

doi:10.1016/j.porgcoat.2016.09.012

Cited by 82 publications

(45 citation statements)

References 29 publications

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“…As seen in Figure (a), Young's modulus of polyurethane lacquer film increased by 9% in the presence of 5 wt % silica nanoparticle reinforcement. Adhesion strength improvement of the acrylic polyurethane coatings by the addition of 4 to 6 wt % of silica nanoparticles was also reported by Malaki et al . The addition of 0.5 and 1 wt % silylated CNF (DS 0.1) led to an approximately 10% decrease in Young's modulus when compared with the pure polyurethane lacquer film.…”

Section: Resultssupporting

confidence: 65%

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Virtanen

Jämsä

Talja

et al. 2017

J of Applied Polymer Sci

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The increasing demand for the use of sustainable materials in industrial applications has created an urge to develop technologies that enable the use of biopolymers such as cellulose for the improvement of properties of commercial products. In this study, the potential of the silyl functionalized cellulose nanofibrils (CNF) as a reinforcing additive for the water‐ and solvent‐based two‐component polyurethane (PU) lacquer coatings was evaluated. The addition of the silylated CNF improved the abrasion resistance, strength, and elasticity of the PU coatings. When using the silylated CNF as an additive, the adhesion of the PU coatings was retained. The oxygen permeation rate of the silylated CNF films was strongly influenced by the nature of the solvent. The silylated CNF showed potential as a reinforcing additive even at low loadings in the two‐component PU lacquers. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44801.

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Section: Resultssupporting

confidence: 65%

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Virtanen

Jämsä

Talja

et al. 2017

J of Applied Polymer Sci

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show abstract

“…As seen in Figure 9(a), Young's modulus of polyurethane lacquer film increased by 9% in the presence of 5 wt % silica nanoparticle reinforcement. Adhesion strength improvement of the acrylic polyurethane coatings by the addition of 4 to 6 wt % of silica nanoparticles was also reported by Malaki et al 61 The addition of 0.5 and 1 wt % silylated CNF (DS 0.1) led to an approximately 10% decrease in Young's modulus when compared with the pure polyurethane lacquer film. However, a 5% increment in Young's modulus was observed with 2 wt % loading for the silylated CNF.…”

Section: Mechanical Performance Of the Cnf-reinforced Polyurethane Lasupporting

confidence: 67%

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Virtanen¹,

Jämsä²,

Talja³

et al. 2018

J of Applied Polymer Sci

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“…The following equation predicts hardness as a function of inherent properties of the polymer nanocomposites and is known as the Kohlstedt equation (Eq. (1)): 52 (1)…”

Section: Mechanical Properties Of Wpu/poss Hybrid Filmsmentioning

confidence: 99%

Polyhedral Oligomeric Silsesquioxane (POSS) as Reinforcing Agent for Waterborne Polyurethane Coatings on Wood

et al. 2019

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Polyhedral oligomeric silsesquioxane (POSS) was added as a reinforcing agent in waterborne polyurethane (WPU)-based coatings to improve their properties. The morphology, structure, thermal stability as well as mechanical properties of the resulting WPU and WPU/POSS hybrid films were investigated. The good compatibility of POSS in the WPU matrices was demonstrated by transmission electron microscopy. Furthermore, Fourier-transform infrared spectroscopy analysis (FTIR) suggested the successful bonding of POSS and WPU matrices. The thermal stability of WPU/POSS hybrids was improved than that of pure WPU according to thermal gravimetric analysis (TGA). The results also revealed the enhancement of the pencil hardness and abrasion resistance of the hybrid films compared with WPU. However, the pull-off adhesion slightly decreased from Grade 0 to Grade 2.

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Effect of nano-silica on the mechanical properties of acrylic polyurethane coatings

Cited by 82 publications

References 29 publications

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Polyhedral Oligomeric Silsesquioxane (POSS) as Reinforcing Agent for Waterborne Polyurethane Coatings on Wood

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