Improvement of Tribological Performance of Epoxy by the Addition of Irradiation Grafted Nano-Inorganic Particles

Development of Nanocomposites Reinforced with Carboxylated Poly(ether ether ketone) Grafted to Zinc Oxide with Superior Antibacterial Properties

“…It has been reported that the covalent grafting causes the immobilization of the nanoparticles in certain positions of the matrix, which prevents their agglomeration at the sliding interface, thereby leading to an effective reduction of the coefficient of friction. Similar beneficial effect on decreasing μ has been reported for epoxy-based composites with grafted nanoparticles such as SiC or Al 2 O 3 …”

“…This exceptional decrement is again related to the the chemical bonding at the filler–matrix interface, which improves the nanofiller distribution and strengthens the interfacial adhesion between the composite phases. Enhanced wear resistance was previously reported for other composites incorporating polymer-grafted nanoparticles. , Focusing on nanocomposites filled with pristine ZnO, a moderate decrease in this property is observed, the maximum decrease being about 45% for the composite with 2.5 wt % loading. An analogous trend has been described for ZrO 2 and SiC-reinforced PEEK nanocomposites, , where W sp passed through a minimum at an optimum nanofiller concentration of ∼2 vol %, attributed to the formation of nanoparticle agglomerates at higher loadings that hamper the development of a continuous transfer film on the counter surface.…”

Development of Nanocomposites Reinforced with Carboxylated Poly(ether ether ketone) Grafted to Zinc Oxide with Superior Antibacterial Properties

“…It has been reported that the covalent grafting causes the immobilization of the nanoparticles in certain positions of the matrix, which prevents their agglomeration at the sliding interface, thereby leading to an effective reduction of the coefficient of friction. Similar beneficial effect on decreasing μ has been reported for epoxy-based composites with grafted nanoparticles such as SiC or Al 2 O 3 …”

“…This exceptional decrement is again related to the the chemical bonding at the filler–matrix interface, which improves the nanofiller distribution and strengthens the interfacial adhesion between the composite phases. Enhanced wear resistance was previously reported for other composites incorporating polymer-grafted nanoparticles. , Focusing on nanocomposites filled with pristine ZnO, a moderate decrease in this property is observed, the maximum decrease being about 45% for the composite with 2.5 wt % loading. An analogous trend has been described for ZrO 2 and SiC-reinforced PEEK nanocomposites, , where W sp passed through a minimum at an optimum nanofiller concentration of ∼2 vol %, attributed to the formation of nanoparticle agglomerates at higher loadings that hamper the development of a continuous transfer film on the counter surface.…”

An Experimental Study on the Effect of Graphite Microparticles on the Mechanical and Tribological Properties of Epoxy Matrix Composites

“…11 that the composite with the higher graphite content stared with a lower friction coe cient, a decrease of 12% was observed between the neat epoxy and the specimen with 1wt% graphite content, this is as a result of the ease with which the graphite particles come off with higher graphite content and form the lubricating lm as discussed earlier [23]. This is also comparable to results recorded in experiments by [29,30]. Similar trends are noticed in all other operational conditions as shown in Fig.…”

Fundamental aspects and recent progress on wear/scratch damage in polymer nanocomposites

“…Similar conclusion was also obtained by other investigators that nano-TiO 2 was more effective in reducing the wear rate of different polymers than micro-TiO 2 [99][100][101]. Though it was claimed that uniform dispersion of TiO 2 is required to improve the friction and wear behavior of polymer nanocomposites (i.e., microstructural homogeneity) under dry sliding environment, the exact mechanisms of improvement in wear resistance are not clear.…”

Development of Nanocomposites Reinforced with Carboxylated Poly(ether ether ketone) Grafted to Zinc Oxide with Superior Antibacterial Properties

“…It has been reported that the covalent grafting causes the immobilization of the nanoparticles in certain positions of the matrix, which prevents their agglomeration at the sliding interface, thereby leading to an effective reduction of the coefficient of friction. Similar beneficial effect on decreasing μ has been reported for epoxy-based composites with grafted nanoparticles such as SiC or Al 2 O 3 …”

“…This exceptional decrement is again related to the the chemical bonding at the filler–matrix interface, which improves the nanofiller distribution and strengthens the interfacial adhesion between the composite phases. Enhanced wear resistance was previously reported for other composites incorporating polymer-grafted nanoparticles. , Focusing on nanocomposites filled with pristine ZnO, a moderate decrease in this property is observed, the maximum decrease being about 45% for the composite with 2.5 wt % loading. An analogous trend has been described for ZrO 2 and SiC-reinforced PEEK nanocomposites, , where W sp passed through a minimum at an optimum nanofiller concentration of ∼2 vol %, attributed to the formation of nanoparticle agglomerates at higher loadings that hamper the development of a continuous transfer film on the counter surface.…”

An Experimental Study on the Effect of Graphite Microparticles on the Mechanical and Tribological Properties of Epoxy Matrix Composites

“…11 that the composite with the higher graphite content stared with a lower friction coe cient, a decrease of 12% was observed between the neat epoxy and the specimen with 1wt% graphite content, this is as a result of the ease with which the graphite particles come off with higher graphite content and form the lubricating lm as discussed earlier [23]. This is also comparable to results recorded in experiments by [29,30]. Similar trends are noticed in all other operational conditions as shown in Fig.…”

Fundamental aspects and recent progress on wear/scratch damage in polymer nanocomposites

“…Similar conclusion was also obtained by other investigators that nano-TiO 2 was more effective in reducing the wear rate of different polymers than micro-TiO 2 [99][100][101]. Though it was claimed that uniform dispersion of TiO 2 is required to improve the friction and wear behavior of polymer nanocomposites (i.e., microstructural homogeneity) under dry sliding environment, the exact mechanisms of improvement in wear resistance are not clear.…”

Development of Nanocomposites Reinforced with Carboxylated Poly(ether ether ketone) Grafted to Zinc Oxide with Superior Antibacterial Properties

“…It has been reported that the covalent grafting causes the immobilization of the nanoparticles in certain positions of the matrix, which prevents their agglomeration at the sliding interface, thereby leading to an effective reduction of the coefficient of friction. Similar beneficial effect on decreasing μ has been reported for epoxy-based composites with grafted nanoparticles such as SiC or Al 2 O 3 …”

“…This exceptional decrement is again related to the the chemical bonding at the filler–matrix interface, which improves the nanofiller distribution and strengthens the interfacial adhesion between the composite phases. Enhanced wear resistance was previously reported for other composites incorporating polymer-grafted nanoparticles. , Focusing on nanocomposites filled with pristine ZnO, a moderate decrease in this property is observed, the maximum decrease being about 45% for the composite with 2.5 wt % loading. An analogous trend has been described for ZrO 2 and SiC-reinforced PEEK nanocomposites, , where W sp passed through a minimum at an optimum nanofiller concentration of ∼2 vol %, attributed to the formation of nanoparticle agglomerates at higher loadings that hamper the development of a continuous transfer film on the counter surface.…”

An Experimental Study on the Effect of Graphite Microparticles on the Mechanical and Tribological Properties of Epoxy Matrix Composites

“…11 that the composite with the higher graphite content stared with a lower friction coe cient, a decrease of 12% was observed between the neat epoxy and the specimen with 1wt% graphite content, this is as a result of the ease with which the graphite particles come off with higher graphite content and form the lubricating lm as discussed earlier [23]. This is also comparable to results recorded in experiments by [29,30]. Similar trends are noticed in all other operational conditions as shown in Fig.…”

Fundamental aspects and recent progress on wear/scratch damage in polymer nanocomposites

“…Similar conclusion was also obtained by other investigators that nano-TiO 2 was more effective in reducing the wear rate of different polymers than micro-TiO 2 [99][100][101]. Though it was claimed that uniform dispersion of TiO 2 is required to improve the friction and wear behavior of polymer nanocomposites (i.e., microstructural homogeneity) under dry sliding environment, the exact mechanisms of improvement in wear resistance are not clear.…”