Sliding wear behavior of epoxy containing nano-Al2O3 particles with different pretreatments

Shi, Guang; Zhang, Ming Qiu; Rong, Min Zhi; Wetzel, Bernd; Friedrich, K.

doi:10.1016/s0043-1648(03)00533-7

Cited by 170 publications

(94 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4 Nano-Al 2 O 3 with an average diameter of 3.8 nm proved to reduce the wear rate of polyphenylene sulfide significantly. 9 The optimum filler concentration was found to be 0.24 vol % for the best wear resistance. Besides neat polymeric materials, nanometer-sized particles were also applied to modify the wear behavior of polymer-based composites for tribological applications, 1,2,5,13 which include traditional reinforcements or lubricants.…”

Section: Introductionmentioning

confidence: 92%

“…1,2,5,13 In recent years, nanometer-sized mineral particles have been widely introduced to the polymer matrix composites for tribological studies. 1,2,4,5,9,13 In comparison with the conventional microscale particles, nanoparticles proved to have some special advantages for tribological applications 1,2,4,9,14 : (1) lower abrasiveness due to its reduced angularity; (2) a remarkable reinforcing effect, i.e., the enhanced modulus, strength, and toughness simultaneously; (3) better adhesion between the nanoparticles and the matrix due to its higher specific areas; and (4) a lower content of filler needed.…”

Section: Introductionmentioning

confidence: 99%

“…This is valid for the novel nanocomposites as well because the wear performance was mostly investigated under very mild (low sliding velocity and load) wear conditions in publications. 1,2,4,9,14 In the present study, 300 nm TiO 2 (4 vol %) and graphite (7 vol %) were incorporated into an epoxy material. Previous studies of the wear performance of nanoparticles filled epoxy systems 2 found an optimum nanoparticle of 4 vol % and graphite is well established as filler that offers a lubricating effect.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites

Xian

Walter

Haupert

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

The influence of incorporated 300 nm TiO 2 (4 vol %), graphite (7 vol %), or combination of both fillers on the tribological performance of an epoxy resin was studied under various sliding load (10-40 N) and velocity conditions (0.2-3.0 m/s). Mechanical measurements indicated that the incorporation of TiO 2 significantly enhanced the flexural and impact strength of the neat epoxy and the graphite including epoxy. Tribological tests were conducted with a cylinder-on-flat testing rig. The incorporation of nano-TiO 2 significantly improved the wear resistance of the neat epoxy under mild sliding conditions; however, this effect was markedly diminished under severe sliding conditions (high velocity and normal load). Nano-TiO 2 reduced the coefficient of friction only under severe sliding conditions. Graphite showed a beneficial effect in reducing the wear rate and the coefficient of friction of the neat epoxy. Compared to the nano-TiO 2 -filled epoxy, the graphite-filled epoxy showed more stable wear performance with the variation of the sliding conditions, especially the normal load. A synergistic effect was found for the combination of nano-TiO 2 and graphite, which led to the lowest wear rate and coefficient of friction under the whole investigated conditions. The synergistic effect was attributed to the effective transfer films formed on sliding pair surfaces and the reinforcing effect of the nanoparticles.

show abstract

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites

Xian

Walter

Haupert

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…6 Furthermore, the quality of the interfacial bond between the fillers and the matrix and the extent of the curing of the resin matrix may also influence the wear resistance of composite resin restorations. 7,8 Wear resistance is vital for the longevity of restoration and maintenance of a stable occlusal contact over time. 9 Dental restorations should ideally have wear resistances similar to that of natural tooth.…”

Section: Introductionmentioning

confidence: 99%

Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities

Alkhudhairy

2017

The Journal of Contemporary Dental Practice

View full text Add to dashboard Cite

Introduction The aim of this study was to assess the wear resistance of four bulk-fill composite resin restorative materials cured using high- and low-intensity lights. Materials and methods Twenty-four samples were prepared from each composite resin material (Tetric N-Ceram, SonicFill, Smart Dentin Replacement, Filtek Bulk-Fill) resulting in a total of 96 samples; they were placed into a mold in a single increment. All of the 96 samples were cured using the Bluephase N light curing unit for 20 seconds. Half of the total specimens (n = 48) were light cured using high-intensity output (1,200 mW/cm2), while the remaining half (n = 48) were light cured using low-intensity output (650 mW/cm2). Wear was analyzed by a three-dimensional (3D) noncontact optical profilometer (Contour GT-I, Bruker, Germany). Mean and standard deviation (SD) of surface loss (depth) after 120,000 cycles for each test material was calculated and analyzed using one-way analysis of variance (ANOVA) with a significance level at p < 0.05. Results The least mean surface loss was observed for SonicFill (186.52 µm) cured using low-intensity light. No significant difference in the mean surface loss was observed when comparing the four tested materials with each other without taking the curing light intensity into consideration (p = 0.352). A significant difference in the mean surface loss was observed between SonicFill cured using high-intensity light compared with that cured using low-intensity light (p < 0.001). Conclusion A higher curing light intensity (1,200 mW/cm2) had no positive influence on the wear resistance of the four bulk-fill composite resin restorative materials tested compared with lower curing light intensity (650 mW/cm2). Furthermore, SonicFill cured using low-intensity light was the most wearresistant material tested, whereas Tetric N-Ceram cured using high-intensity light was the least wear resistant. Clinical significance The wear resistance was better with the newly introduced bulk-fill composite resins under low-intensity light curing. How to cite this article Alkhudhairy F. Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities. J Contemp Dent Pract 2017;18(1):39-43.

show abstract

“…11 In our previous works, graft polymerization onto nanoparticles proved to be feasible in improving tribological behavior of polymer nanocomposites. [12][13][14][15][16][17] The grafted polymers changed the hydrophilic surface feature of the particles to hydrophobic and broke apart the nanoparticle agglomerates during polymerization process. Besides, filler/matrix interfacial interaction in the composites was enhanced mainly due to chain entanglement of grafted polymer with matrix polymer.…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of epoxy composites containing reactive SiC nanoparticles

Luo¹,

Rong²,

Zhang³

2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

The present article evaluated the sliding wear behaviors of epoxy and its composites filled with SiC nanoparticles. Polyglycidyl methacrylate (PGMA) and a copolymer of glycidyl methacrylate and styrene were grafted onto the nanoparticles as a measure of surface pretreatment, respectively. The grafted polymers were selected because the epoxide groups on PGMA would take part in the curing reaction of epoxy resin and covalently connect the nanoparticles with the matrix, while styrene acted as a copolymerized monomer to adjust the amount of the reactive groups of the grafted macromolecular chains, and hence the compatibility between the grafted polymers and the matrix. In comparison to the composites filled with untreated nano-SiC particles, the composites with the grafted nano-SiC exhibit improved sliding wear resistance and reduced frictional coefficient owing to the chemical bonding at the filler/matrix interface. The results were analyzed in terms of structure-properties relationship of the composites.

show abstract

Sliding wear behavior of epoxy containing nano-Al2O3 particles with different pretreatments

Cited by 170 publications

References 20 publications

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites

Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities

Tribological behavior of epoxy composites containing reactive SiC nanoparticles

Contact Info

Product

Resources

About

Sliding wear behavior of epoxy containing nano-Al2O3 particles with different pretreatments

Cited by 170 publications

References 20 publications

A synergistic effect of nano‐Tio2 and graphite on the tribological performance of epoxy matrix composites

A synergistic effect of nano‐Tio2 and graphite on the tribological performance of epoxy matrix composites

Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities

Tribological behavior of epoxy composites containing reactive SiC nanoparticles

Contact Info

Product

Resources

About

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites

A synergistic effect of nano‐Tio₂ and graphite on the tribological performance of epoxy matrix composites