Influence of tribological additives on friction and impact performance of injection moulded polyacetal

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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Influence of tribological additives on friction and impact performance of injection moulded polyacetal. / Laursen, Jens Lolle; Sivebæk, Ion Marius; Christoffersen, L.W.; Papsøe, M.; Vigild, Martin Etchells; Brøndsted, Povl; Horsewell, Andy.

In: Wear, Vol. 267, No. 12, 2009, p. 2294-2302.

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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Laursen, Jens Lolle; Sivebæk, Ion Marius; Christoffersen, L.W.; Papsøe, M.; Vigild, Martin Etchells; Brøndsted, Povl; Horsewell, Andy / Influence of tribological additives on friction and impact performance of injection moulded polyacetal.

In: Wear, Vol. 267, No. 12, 2009, p. 2294-2302.

Publication: Research - peer-reviewJournal article – Annual report year: 2009

Bibtex

@article{974c784831314affac05d7fdc4868630,
title = "Influence of tribological additives on friction and impact performance of injection moulded polyacetal",
publisher = "Elsevier BV",
author = "Laursen, {Jens Lolle} and Sivebæk, {Ion Marius} and L.W. Christoffersen and M. Papsøe and Vigild, {Martin Etchells} and Povl Brøndsted and Andy Horsewell",
year = "2009",
doi = "10.1016/j.wear.2009.03.048",
volume = "267",
number = "12",
pages = "2294--2302",
journal = "Wear",
issn = "0043-1648",

}

RIS

TY - JOUR

T1 - Influence of tribological additives on friction and impact performance of injection moulded polyacetal

A1 - Laursen,Jens Lolle

A1 - Sivebæk,Ion Marius

A1 - Christoffersen,L.W.

A1 - Papsøe,M.

A1 - Vigild,Martin Etchells

A1 - Brøndsted,Povl

A1 - Horsewell,Andy

AU - Laursen,Jens Lolle

AU - Sivebæk,Ion Marius

AU - Christoffersen,L.W.

AU - Papsøe,M.

AU - Vigild,Martin Etchells

AU - Brøndsted,Povl

AU - Horsewell,Andy

PB - Elsevier BV

PY - 2009

Y1 - 2009

N2 - Tribological additives are used to improve frictional properties of injection moulded thermoplastics. The additives might however also affect the mechanical properties of the material. The influence of processing conditions on both frictional and mechanical properties is highly relevant in the development of tribologically modified grades. In the present study we investigate how two commonly used tribological additives, polydimethylsiloxane and polytetrafluoroethylene, affect friction and impact properties of polyacetal (polyoxymethylene). A new injection mould provides test specimens for both friction and impact testing. Friction is evaluated through ring-on-disc testing against polypropylene simulating use-conditions in a particular medical device. The impact testing is based on instrumented three-point bending of single-edge notched beams of component-realistic thickness. Both frictional and mechanical properties are benchmarked against those of the base polyacetal resin. High-speed video recording of the crack propagation during impact testing reveals potential differences in fracture mechanisms among the blends. Fractography by scanning electron microscopy is used for comparison of fracture surface characteristics. The tested concentration of the additives is found to effectively reduce friction, yet are not found critical with respect to the impact properties evaluated. A noticeable interaction with respect to friction is found between the additives speaking in favour of their use in combination.

AB - Tribological additives are used to improve frictional properties of injection moulded thermoplastics. The additives might however also affect the mechanical properties of the material. The influence of processing conditions on both frictional and mechanical properties is highly relevant in the development of tribologically modified grades. In the present study we investigate how two commonly used tribological additives, polydimethylsiloxane and polytetrafluoroethylene, affect friction and impact properties of polyacetal (polyoxymethylene). A new injection mould provides test specimens for both friction and impact testing. Friction is evaluated through ring-on-disc testing against polypropylene simulating use-conditions in a particular medical device. The impact testing is based on instrumented three-point bending of single-edge notched beams of component-realistic thickness. Both frictional and mechanical properties are benchmarked against those of the base polyacetal resin. High-speed video recording of the crack propagation during impact testing reveals potential differences in fracture mechanisms among the blends. Fractography by scanning electron microscopy is used for comparison of fracture surface characteristics. The tested concentration of the additives is found to effectively reduce friction, yet are not found critical with respect to the impact properties evaluated. A noticeable interaction with respect to friction is found between the additives speaking in favour of their use in combination.

KW - Materials research

KW - Impact fracture

KW - Polypropylene

KW - Friction

KW - Polyacetal

KW - Additives

KW - Light strong materials for wind turbines and for transportation

KW - Injection moulding

KW - Lette stærke materialer til vindmøller og til transport

KW - Materialeforskning

U2 - 10.1016/j.wear.2009.03.048

DO - 10.1016/j.wear.2009.03.048

JO - Wear

JF - Wear

SN - 0043-1648

IS - 12

VL - 267

SP - 2294

EP - 2302

ER -