Surface and wear behavior of bis-(4-hydroxyphenyl) cyclohexane (bis-Z) polycarbonate/polycarbonate–polydimethylsiloxane block copolymer alloys

Kim, Yu Seung; Yang, Jinlian; Wang, Sheng; Banthia, A. K.; McGrath, James E.

doi:10.1016/s0032-3861(02)00465-2

Cited by 15 publications

(8 citation statements)

References 38 publications

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“…Both the two factors are favor of the increase in the surface hydrophobicity . As a result, the higher content of PDMS yields the copolymer with more hydrophobic surface …”

Section: Resultsmentioning

confidence: 99%

Preparation and properties of poly(siloxane‐ether‐urethane)‐acrylic hybrid emulsions

Tang¹,

Ma²,

Hou³

et al. 2017

J of Applied Polymer Sci

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Poly(siloxane-ether-urethane)-acrylic (PU-AC) hybrid emulsions were prepared by introducing different hydroxyethoxypropyl-terminated polydimethylsiloxane (PDMS) content into the acrylic-terminated poly(ether-urethane) backbone and then in situ copolymerizing with methyl methacrylate and butyl acrylate via emulsion process. The effects of PDMS on the particle size and viscoelastic behavior of the hybrid emulsions were investigated. Meanwhile, the hydrogen bonding, mechanical and thermal mechanical properties, water resistance, the surface gloss, and wettability of the resultant hybrid films were also studied. The results showed that all the hybrid emulsions showed shear-thinning behaviors, and the introduction of PDMS resulted in the formation of the hybrid emulsions with increased average particle size and decreased viscosity. The chemical bonds built between PU and AC yielded higher than 73% crosslinking fraction in all the hybrid materials, but this value decreased with increasing PDMS content because PDMS reduced the hydrogen bonding interactions and enhanced the phase separation. As a result, an increase in the PDMS content led to an increase in the elongation, water resistance, surface roughness, and water hydrophobic of the films, but the tensile strength, hardness, storage modulus, and glass transitions temperature decreased. It is suggested that introduction of PDMS can provide the hybrid materials with the improved flexibility, water resistance, and surface hydrophobicity, which has potential application value in the fouling-release coatings, biomaterials, and surface fishing.

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“…Both the two factors are favor of the increase in the surface hydrophobicity . As a result, the higher content of PDMS yields the copolymer with more hydrophobic surface …”

Section: Resultsmentioning

confidence: 99%

Preparation and properties of poly(siloxane‐ether‐urethane)‐acrylic hybrid emulsions

Tang¹,

Ma²,

Hou³

et al. 2017

J of Applied Polymer Sci

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“…The sample linearly travels with the aid of a power screw while the drum spins at a certain speed by the action of the drive chain. 90,91 A speed controller that is integrated at the motor system is used to control the speed of the drum and the sample. The test can take the abrasive form in case an abrasive paper is coated on the drum, while the test form can be adhesive without using an abrasive paper.…”

Section: Wear Testing Methodologymentioning

confidence: 99%

Wear behaviour of polymeric materials reinforced with man-made fibres: A comprehensive review about fibre volume fraction influence on wear performance

Zaghloul

Steel

Veidt

et al. 2021

Journal of Reinforced Plastics and Composites

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In the mineral processing, mining, oil and gas industries, it is not uncommon to find mechanical components exposed to degradation and wear from slurries. Polymeric matrix composites (PMCs) are considered as potential alternatives to replace metallic materials in such severe environments because of their high strength to weight ratio, ease of production, high wear resistance and good corrosion/chemical resistance. Often, seemingly erratic wear behaviour is observed making preventive maintenance and time-to-failure difficult to manage. A major culprit is the complex physical and chemical interaction with the slurry, such as exposure to high temperatures, high alkalinity, high slurry density, insoluble inorganic contents, high hardness of suspended particles and humidity. It is well understood that the addition of reinforcing fibres greatly improves the stiffness and strength of polymeric matrix composites. However, the effect the reinforcement has on the wear performance is far less established and a framework to analyse the effect of fibre volume fraction is yet to be established. The difficulties in establishing such a framework lay in the multi-factorial contributions and the potential trade-offs with mechanical performance. This makes it much more difficult to isolate clear trends. The objective of the present work is to present a comprehensive review on the influence reinforcing fibres play on wear behaviour of PMCs. The influence of fibre volume fraction on wear performance of polymeric composites reinforced with man-made fibres is presented. The applied load, fibre length, coefficient of friction and chemical treatment of fibres are analysed with respect to wear performance of PMCs. Future trends in the use of fibre-reinforced polymeric composites in wear critical applications are identified. Research gaps in designing composites for wear applications are explained, aiming at motivating future research to address these gaps.

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“…It is known that the wear takes place during the initial period; the steady stage is reached after sliding for 8 min, corresponding to the results of friction coefficient; and the wear volume shows a little increase due to the abrasion of the wear debris [15]. The utilization of block polycarbonate containing siloxane segments is well known to be of great interest for surface modifications [16]. The friction coefficient is strongly dependent not only on the surface enrichment of siloxane but also on the molecular weight of siloxane block segment.…”

Section: Polycarbonate (Pc)mentioning

confidence: 99%

“…The friction coefficient is strongly dependent not only on the surface enrichment of siloxane but also on the molecular weight of siloxane block segment. The initial friction coefficient has a little influence on the overall wear resistance due to the rapid wear process of the uppermost surface [16]. The reinforced polycarbonate resin Lexan 341R-739, containing 40% of weight of short glass fibres, is well known for their abrasive character [17].…”

Section: Polycarbonate (Pc)mentioning

confidence: 99%

A Review on Tribological Behaviour of Polymeric Composites and Future Reinforcements

Aldousiri¹,

Shalwan

Chin

2013

Advances in Materials Science and Engineering

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Many different families of polymers are used in industries and engineering applications. The demands for studying the tribological behaviour of polymers and their composites are recently increased. This article briefs the most recent studies on the tribological behaviour of polymeric materials based on synthetic fibres. It reviews several factors which control the wear and frictional characteristics of such materials, that is, additives, fibres, interfacial adhesion, tribology environment, operating parameters, and composite geometry. In addition to that, new bioreinforcement (fibre) is introduced associated with preliminary results. The results showed that there is high potential of replacing the conventional reinforcement with the bioones.

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Surface and wear behavior of bis-(4-hydroxyphenyl) cyclohexane (bis-Z) polycarbonate/polycarbonate–polydimethylsiloxane block copolymer alloys

Cited by 15 publications

References 38 publications

Preparation and properties of poly(siloxane‐ether‐urethane)‐acrylic hybrid emulsions

Preparation and properties of poly(siloxane‐ether‐urethane)‐acrylic hybrid emulsions

Wear behaviour of polymeric materials reinforced with man-made fibres: A comprehensive review about fibre volume fraction influence on wear performance

A Review on Tribological Behaviour of Polymeric Composites and Future Reinforcements

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