Tribological properties of LDPE + Boehmite composites

Brostow, Witold; Datashvili, Tea; Kao, David; Too, J. J. M.

doi:10.1002/pc.20820

Cited by 17 publications

(12 citation statements)

References 44 publications

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“…The reinforcing and property modification potential of micro-and nanometer-scaled BA, with and without additional surface treatment, has been already checked in various thermoplastics (e.g. [2][3][4][5][6][7][8][9][10][11][12][13]). Polyethylenes (PEs) were often modified in the past with nanofillers, like layered silicates in order to improve their mechanical, and especially barrier properties.…”

mentioning

confidence: 99%

Polyethylene/synthetic boehmite alumina nanocomposites: Structure, thermal and rheological properties

Khumalo

Karger‐Kocsis

Thomann

et al. 2010

Express Polym. Lett.

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mentioning

confidence: 99%

Polyethylene/synthetic boehmite alumina nanocomposites: Structure, thermal and rheological properties

Khumalo

Karger‐Kocsis

Thomann

et al. 2010

Express Polym. Lett.

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“…The degree of improvement of any property depends on the choice of filler origin, particles size and shape. The challenges in this area of high-performance polymers consist in obtaining a significant improvement in the adhesion between the interphases and to achieve a homogeneous dispersion of the filler in the polymer matrix [29]. For polypropylene (PP) + polystyrene (PS) blends, addition of a compatibilizer enhances the impact strength [30].…”

Section: A Survey Of Resultsmentioning

confidence: 99%

“…573 Brostow et al -eXPRESS Polymer Letters Vol.4, No.9 (2010) We have determined dynamic friction using a technique applied before [26][27][28][29]. With increase in the amount of MMT Brazilian clay, the dynamic friction of the nanocomposites increases.…”

Section: A Survey Of Resultsmentioning

confidence: 99%

Nanocomposites of poly(methyl methacrylate) (PMMA) and montmorillonite (MMT) Brazilian clay: A tribological study

Ito¹,

Brostow²,

Dutta³

et al. 2010

Express Polym. Lett.

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Nanocomposites of PMMA+MMT Brazilian clays were developed by mechanical mixing in co-rotational twinscrew extrusion and injection molding with varying weight fraction of MMT Brazilian clays. The clays were purchased in crude form and then washed and purified to extract the organic materials and contaminants. Dynamic friction and wear rate of these composites were studied as a function of concentration of the Brazilian clay. With an increase in the amount of MMT Brazilian clay, the dynamic friction of the nanocomposites increases, a clear but not large effect. It can be explained by sticky nature of clay; clay in the composite is also on the surface and sticks to the partner surface. The wear rate as a function of the clay concentration passes through a minimum at 1 wt% MMT; at this concentration the clay provides a reinforcement against abrasion. At higher clay concentrations we see a dramatic increase in wear – a consequence of clay agglomeration and increased brittleness. The conclusions are confirmed by microscopy results

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“…The use of polymer-based composites can provide a combination of good mechanical and tribological properties. Although addition of fillers can be advantageous, it can also leads to loss in mechanical properties due to incompatibility between filler and polymer matrix [2].…”

Section: Introductionmentioning

confidence: 99%

Abrasive Wear Behavior of LDPE Filled with Silane Treated Flyash Cenospheres

Chand

Sharma

Fahim

2011

Composite Interfaces

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Lightweight, high mechanical strength insulating materials exhibiting high resistance to corrosion, solvents and abrasive wear are desired for wire and cable insulation as well as protection. Polyethylenes are generally used for such applications owing to their good electrical insulation properties and being inert to solvents at room temperature. However, their abrasion resistance is quite poor. Hence, in the present work, an attempt has been made to improve the abrasive wear resistance of low-density polyethylene (LDPE) by incorporating hollow microspheres, known as cenospheres, in the base polymer to form composites. These cenospheres are obtained from flyash particles, a thermal power plant waste, and do not tend to increase the weight of the polymer composite when used as a filler. The composites were developed by changing the weight fraction of untreated as well as silane treated cenospheres to the extent of 5 wt%. Tribological characterization of these composites was done in abrasive wear mode by varying the operating parameters, such as speed and sliding distance against silicon carbide paper. It was found that 10 wt% silane treated cenosphere filled LDPE composite showed the maximum wear resistance (∼×10 −11 m 3 /N m) among the six composites. However, a further increase in filler concentration decreased the wear resistance. The improvement in wear resistance was supported by scanning electron microscopy and attributed to the strong interaction between silane treated cenosphere and LDPE molecules which resisted the elongation and shearing of polymer chains by the abrasive grits.

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Tribological properties of LDPE + Boehmite composites

Cited by 17 publications

References 44 publications

Polyethylene/synthetic boehmite alumina nanocomposites: Structure, thermal and rheological properties

Polyethylene/synthetic boehmite alumina nanocomposites: Structure, thermal and rheological properties

Nanocomposites of poly(methyl methacrylate) (PMMA) and montmorillonite (MMT) Brazilian clay: A tribological study

Abrasive Wear Behavior of LDPE Filled with Silane Treated Flyash Cenospheres

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