Improvement of Scratch and Wear Resistance of Polymers by Fillers Including Nanofillers

Brostow, Witold; Lobland, Haley E. Hagg; Hnatchuk, Nathalie; Pérez, Jose

doi:10.3390/nano7030066

Cited by 45 publications

(20 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Tribology is a very broad area that includes the studies of friction, lubrication, wear, adhesion, scratch resistance and any interactions of multiple surfaces [17,[19][20][21][22]. Dynamic friction is an important indicator, and has been determined by using a tribometer produced by Nanovea Inc.…”

Section: Dynamic Friction Analysismentioning

confidence: 99%

Effects of UV Stabilizers on Polypropylene Outdoors

Brostow

Gençel

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

Hindered amine light stabilizers (HALSs) and nano ZnO were used to stabilize polypropylene (PP) film-based formulations that were exposed to ultraviolet (UV) light for different lengths of time, simulating the harsh outdoor weather of Dallas, Texas, USA. UV doses applied in our laboratory are 121 times larger than the UV dose provided by the sunlight in Texas. 15 different compositions were studied. Tensile behavior, UV transmittance, thermal stability (by thermogravimetric analysis) and dynamic friction of the so exposed PP-based films were determined. Scanning electron micrographs of fracture surfaces were obtained. Nano-ZnO-containing stabilizers impart strong UV resistance to our films. The combination of HALSs and nano-ZnO stabilizers makes the PP films harder—which is important for some PP applications, such as toy manufacturing.

show abstract

Section: Dynamic Friction Analysismentioning

confidence: 99%

Effects of UV Stabilizers on Polypropylene Outdoors

Brostow

Gençel

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Slike tipičnih otisaka dobijenih na testeru mikro tvrdoće poVikersu prikazane na slici 1 pokazuju da je veća vrednost mikrotvrdoće (manji otisak) dobijena kod sintetisanog uzorka sa Al2O3 Fe česticama kao ojačanjem. Poboljšana tvrdoća dobijenog kompozita obično je praćena povećanjem otpornosti na habanje, rezanje i grebanje koji povećavaju primenljivost kompozita [14][15][16].…”

Section: Rezultatiunclassified

Enhanced adhesion of acrylic adhesives with dental tissue with the addition of aluminum oxide based particles

Vuksanović¹,

Tomić²,

Mladenović³

et al. 2020

Tehnika

View full text Add to dashboard Cite

Composite materials based on acrylate UV-cured polymers (Bis-GMA/TEGDMA) as a matrix and reinforcements that can be selected in order to adjust the properties of the obtained composite are used in the field of dental technology. The role of reinforcement is to adjust the mechanical properties, but also to control the shrinkage during curing. As reinforcement, alumina particles doped with iron oxide (Al2O3 Fe) synthesized using the sol-gel technique were selected. In order to simulate the process of adhesive application in real conditions, in vitro testing technique and adhesion properties of synthesized adhesive were used, where tooth tissue was used as a substrate. Comparison with standard adhesives used in dentistry was used to compare adhesion. The quality of the adhesive joint was evaluated using the microhardness testing method using different loads where it is estimated how the adhesive makes a connection with the substrate. It was shown that the synthesized adhesive showed significantly enhanced adhesion compared to the standard adhesive used in dentistry (836%).

show abstract

“…The elastic modulus values of composites increased significantly at high filler contents (15, 20, 25 and 30 wt%) where the modulus increased 18, 16, 14 and 24%, respectively, compared with the neat HMPEX. Figure 1 (a) illustrates the effect exerted by Nb2O5 content on the elastic modulus of each composite: for low filler content, the addition of Nb2O5 reduces the matrix cohesion, while for high contents, the reinforcing effect of the filler predominates [25]. The increment of elastic modulus value represents an increment in the stiffness of the composite [39].…”

Section: 4mentioning

confidence: 99%

“…Development of composites is one of the methods used to improve the wear resistance of polymeric materials [18]. Different type of fillers such as alumina [23], graphite, molybdenum disulfide, [24]; carbon nanofibers and nanotubes [25,26] have been added to biopolymers.…”

Section: Introductionmentioning

confidence: 99%

Niobium oxide (NB2O5) filled high modulus polyethylene extrudable (HMPEX) composites: tensile properties

Pinto¹,

Acevedo²,

Rocha³

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

View full text Add to dashboard Cite

The present study reports the development of composites of high-modulus polyethylene extrudable (HMPEX) filled with niobium oxide (Nb2O5) for using in therapeutic applications. The effect of filler content on mechanical properties of composites processed with Nb2O5 contents in the range of 5-30 wt% was evaluated. Tensile strength tests were performed according to ASTM D 638. The tensile modulus values of composites increased significantly at high filler contents (15, 20, 25 and 30 wt%), where the modulus increased 18, 16, 14 and 24%, respectively, compared with the modulus of neat HMPEX. The yield strength showed slight improvement with the increase of filler content up to 20 wt%. At this concentration, it reached the maximum value, 10% higher than the value of HMPEX. The values of elongation at break and tensile strength decreased with the increase in filler content. All properties presented by the composites processed by extrusion were inferior to those of the composites prepared by compression molding. The neat HMPEX and the HMPEX composites processed with 5 wt% of Nb2O5 obtained by compression molding exhibited properties matching those required for medical grade UHMWPE resins, according to ASTM F648-00, making them potential candidates for medical applications.

show abstract

Improvement of Scratch and Wear Resistance of Polymers by Fillers Including Nanofillers

Cited by 45 publications

References 36 publications

Effects of UV Stabilizers on Polypropylene Outdoors

Effects of UV Stabilizers on Polypropylene Outdoors

Enhanced adhesion of acrylic adhesives with dental tissue with the addition of aluminum oxide based particles

Niobium oxide (NB2O5) filled high modulus polyethylene extrudable (HMPEX) composites: tensile properties

Contact Info

Product

Resources

About