Two-body abrasion of some polymers against 6–50 μm SiC abrasives

Roberts, J. C.; Heh-Won, Chang

doi:10.1016/0043-1648(82)90325-8

Cited by 12 publications

(2 citation statements)

References 18 publications

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“…Comparing the wear profile for extruded specimens in Figure 2, it is evident that the wear rate has reduced up to 50% in the single-pass testing when compared to the multipass testing. A similar result was earlier published where a significant difference was found between the single and multipass testing for PA6/6 and polycarbonate [26]. The relation between abrasion and grain size was also studied earlier where it is evidenced that an increase in abrasive size leads to a change in mechanism from ploughing to cutting [27].…”

Section: Wear Mechanisms the Repeatability Tests Clearly Showsupporting

confidence: 83%

Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material

Sukumaran

Keresztes

Kalácska

et al. 2017

Advances in Tribology

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Polyamide (PA6/6) is often used as a tribological pair in abrasion prevalent applications such as hinges and sliders. PA6/6 is frequently processed by injection moulding and extrusion process. It is known that these processes influence the polymers mechanical behaviour, but their influence on the polymers wear response has not been studied. Hence the present research attempts to study the influence of different manufacturing processes on tribological behaviour for PA6/6. Wear tests were performed on a pin abrading tester (DIN 50322). Abrasion resistance of both extruded and injection moulded PA6/6 were tested at different loads (20 and 35 N). Single-pass (nonoverlapping mode) and multipass testing (overlapping mode) were used to understand the influence of clogging of wear debris. It is evidenced that with increasing load the specific wear rate decreases; moreover, fine abrasives tend to reduce the wear rate. In multipass testing a transfer layer clogged on the counterface that acted as a protective agent and lowers wear rate. Poor mechanical strength of injection moulded polymers is apparently compensated by microstructural response for having a similar wear behaviour between extruded and injection moulded PA 6/6. Hence a proper balance between microstructural and mechanical characteristics is an absolute must in PA 6/6 for better wear performance.

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Section: Wear Mechanisms the Repeatability Tests Clearly Showsupporting

confidence: 83%

Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material

Sukumaran

Keresztes

Kalácska

et al. 2017

Advances in Tribology

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“…Table 4. This wear rate is typical of deformable polymers at long times in multiple-pass wear (3,24) and also corresponds to the single-pass wear of HDPE over a counterface with a 1 pm surface roughness ( 3 ) , and is several orders of magnitude greater than the wear of a polymer against itself or even against polished steel (24,25).…”

Section: Wear Processesmentioning

confidence: 96%

A polytetrafluoroethylene filled ultra‐high molecular weight polyethylene composite: Mechanical and wear property relationships

Silverstein

Breitner

1995

Polymer Engineering & Sci

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This research addresses the wear properties and processes of 10 vol% polytetrafluoroethylene (PTFE) filled ultra‐high molecular weight polyethylene (UHMWPE) composites and their relationship to mechanical properties. The addition of the PTFE micropowder results in a slight increase in modulus and a significantly lower strain at break. This is due to a quasi‐brittle failure mechanism. Crosslinking the UHMWPE reduces both the modulus and the ultimate properties. Polymer wear studies against SiC abrasive paper can be divided into initial and steady‐state processes. The initial wear, polymer‐SiC wear, is dominated by microcutting and the formation of a transfer film. A single‐pass wear rate (R1) can be derived from a power‐law description of the initial wear. The steady‐state wear eventually achieved, called polymer‐film wear, is dominated by sliding against a self‐generated. A steady‐state multiple‐pass wear rate (Rx) can be derived from a linear description of steady‐state wear. The relationships between the wear of UHMWPE and the wear of PTFE can be predicted through their ultimate and deformation properties and through an understanding of the wear mechanisms. These relationships cannot be used to relate composite and UHMWPE wear due to their different failure mechanisms. The lower Rx and coefficient of friction of the composite may be related to the PTFE flakes found on the worn and wearing surface. Crosslinking the UHMWPE yields little change in the worn and wearing surfaces and in Rx. The increase in R1 on addition of PTFE and decrease in R1 on crosslinking may be related to the respective increase and decrease in modulus.

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Wear characteristics of some internally lubricated and reinforced engineering polymer composites

Tewari

Bijwe

Logai

1992

J of Synthetic Lubrication

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An interesting characteristic of abrasion is the dependence of the wear rate on the particle size of the abrasive grits used to lubricate the abrasive papers. Three types of polymers, PTFE, PA, PI, several of their composites, and three metals were selected for studying the effect of particle size on wear rate. The pins were abraded against Sic abrasive papers of various mesh sizes under constant loading in multi‐pass conditions. For some of the polymers and their composites (PA and PEI) the size effect on wear rate was similar to that for the metals. Beyond a critical particle size, no increase in wear was found with increasing particle size. On the other hand, PTFE, PI, and their composites showed the opposite effect. SEM and EDAX were used to investigate the related mechanisms.

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Two-body abrasion of some polymers against 6–50 μm SiC abrasives

Cited by 12 publications

References 18 publications

Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material

Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material

A polytetrafluoroethylene filled ultra‐high molecular weight polyethylene composite: Mechanical and wear property relationships

Wear characteristics of some internally lubricated and reinforced engineering polymer composites

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