Compression‐molded, lubricant‐treated UHMWPE composites

Puukilainen, Esa; Saarenpää, Hanna; Pakkanen, Tapani A.

doi:10.1002/app.25823

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…A study of Lu et al [18] used UHMWPE fiber/carbon fiber hybrid composites prepared by inner‐laminar and interlaminar hybrid ways. Puukilainen et al [19] studied lubricant‐treated UHMWPE composites prepared by compression molding. Mixtures containing up to 5wt% of solid lubricants (molybdenum disulfide (MoS 2 ) and carbon black (CB)) and liquid lubricant (perfluoropolyether) were used in this study.…”

Section: Introductionmentioning

confidence: 99%

Characterization of UHMWPE/wood composites produced via dry‐blending and compression molding

2013

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In this study, composites made from wood flour and ultra-high molecular weight polyethylene (UHMWPE) were produced and characterized. In particular, the composites were initially prepared using a simple dry mixing technique and then compression molded. The effect of wood content on the mechanical properties was determined up to 30wt%. Characterization included scanning electron microscopy to investigate wood dispersion and interfacial bonding quality, while the mechanical tests included tensile, torsion, and flexion. The results show that good dispersion and adhesion was achieved and wood flour addition increased substantially (up to 97%) all the moduli in the range of conditions tested. Finally, it was found that hardness increased by about 5 Shore D points by adding 30% wood flour in UHMWPE. POLYM. COMPOS., 34:510-516, 2013. ª

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Section: Introductionmentioning

confidence: 99%

Characterization of UHMWPE/wood composites produced via dry‐blending and compression molding

2013

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“…In order to enhance the tensile strength of UHMWPE fibers, it is crucial for improving the fluidity of UHMWPE during processing. The main methods of flow modification include low-viscosity polyolefin blending modification, 11,[14][15][16] lubricant blending modification, 17,18 solution system regulation, [19][20][21] and other modification methods. 7,22,23 Stearic acid (SA) is a popular fatty acid and a common lubricant, 24 applying in various polymer systems with the advantages of low cost and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Effects of stearic acid on the tensile properties of ultrahigh molecular weight polyethylene fibers

Wang,

Wang

et al. 2023

J of Applied Polymer Sci

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For the purpose of the development of ultrahigh molecular weight polyethylene (UHMWPE) fibers with improved tensile properties, the stearic acid (SA) was added to the gel spinning of UHMWPE and acted as a lubricant film. SA addition was intended to be 0.2, 0.4, 0.6, 0.8, and 1.0 wt% of UHMWPE for forming the SA modified UHMWPE fibers. The tensile properties, thermal properties, crystallization properties, and orientation properties of the prepared UHMWPE fibers were systematically investigated. Results show that there is a more significant tensile property for UHMWPE fibers as SA addition is 0.6 wt%. Their tensile strength and tensile modulus reach 32.86 and 1580.89 cN/dtex, which are raised to an extent of 12.0% and 7.7%, respectively, compared with UHMWPE fibers alone. Moreover, the thermal properties, crystallization properties, and orientation properties of the prepared UHMWPE fibers are enhanced observably when the SA addition is 0.6 wt%.

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“…Therefore, it is important to perform fundamental investigations on the structure-property and property-performance relationships of the polymer in terms of dynamic and time-dependent properties. Currently, many efforts are being continuously made to investigate the mechanical properties of UHMWPE orthopedic biomaterials, such as fatigue [1][2][3][4][5], tribology [6][7][8][9], nano/microindentation [10][11][12], thermomechanical analysis (TMA) [13], and mechanical performance improvement [4,[14][15][16]. However, past studies have paid little attention to the viscoelastic behaviors of UHMWPE although the polymer exhibits creep and stress relaxation and is subjected constantly to dynamic load in its major application as orthopedic implants.…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic Behaviors of Ultrahigh Molecular Weight Polyethylene Under Three-Point Bending and Indentation Loading

Deng

Uhrich

2009

J Biomater Appl

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Dynamic mechanical properties under three-point bending and deformation behavior under indentation loading of an ultrahigh molecular weight polyethylene (UHMWPE) were investigated in this study. Dependence of its viscoelastic properties on temperature, frequency, load level, specimen geometry and heating rates were examined. The results showed that temperature and frequency had significant effects on the response of UHMWPE to the dynamic load. With the increase in temperature, the storage modulus (E') was decreased and the loss angle (tan delta) was increased, indicating an increase in the trend in viscoelastic response of the polymer at high temperature. On the other hand, when frequency was increased, higher E' and lower tan delta were observed, suggesting that the material behaved more elastically. While the two heating rates of 5 degrees C/min and 10 degrees C/min had little effect on E' and tan delta, the load level significantly influenced the dynamic mechanical properties of the polymer. UHMWPE showed quite different responses at 0.5 and 20 Hz than at 1-10 Hz, which is worth further investigation. The results from indentation experiment showed that temperature, specimen geometry and load level had significant effects on the response of UHMWPE to the indentation load. With the increase in temperature, the penetration depth was increased, indicating an increase in the deformation trend in the polymer at high temperature. High load led to high penetration. The time-temperature superposition (TTS) method could be used to predict the long-term penetration behaviors of the polymer. From TTS analysis, the activation energy associated with penetration deformation was obtained. Further analysis showed that it might be possible to increase the resistance of UHMEPE to indentation deformation by increasing the thickness and/or decreasing the diameter of the polymer samples.

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Compression‐molded, lubricant‐treated UHMWPE composites

Cited by 13 publications

References 26 publications

Characterization of UHMWPE/wood composites produced via dry‐blending and compression molding

Characterization of UHMWPE/wood composites produced via dry‐blending and compression molding

Effects of stearic acid on the tensile properties of ultrahigh molecular weight polyethylene fibers

Viscoelastic Behaviors of Ultrahigh Molecular Weight Polyethylene Under Three-Point Bending and Indentation Loading

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