New Polyamide Composites for Friction Power Cylinders of Agricultural Machinery

Vodyakov, Vladimir N.; Radaykina, Elena A.; Kotin, Alexandr V.; Kuznetsov, Vyacheslav V.; Murneva, Mariya I.

doi:10.4028/www.scientific.net/kem.816.157

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…Polyamide-polyurethane (PA-PU) block copolymers could improve the structural stability of polyamide, addressing its issues of low-notched impact strength and poor toughness [1][2][3]. While PA-PU copolymers are expected to replace metal and ceramic materials in gears, bearings, and other critical components, they still face challenges due to the low wear resistance under sliding conditions, which makes them prone to failure in mechanical parts [4,5]. Therefore, the enhancement of friction and wear resistance of the PA-PU copolymers is essential for their practical applications.…”

Section: Introductionmentioning

confidence: 99%

Tribological and Mechanical Applications of Liquid-Crystal-Polymer-Modified Carbon-Fiber-Reinforced Polyamide–Polyurethane Composites

Zhou

Wang

et al. 2023

Polymers

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An aromatic copolyester liquid crystal polymer (LCP) was introduced into carbon-fiber-reinforced polyamide–polyurethane (CF/PA-PU) composites through melt blending to improve the tribological properties of the composites. The effects of LCP on the mechanical, processing, and thermal properties of CF/PA-PU composites were compared to those of commonly-used graphite (Gr). The results showed that at 5 wt.% LCP content, the coefficient of friction (COF) was decreased by 16.06%, and the wear rate by 32.22% in the LCP/CF/PA-PU composite compared to the CF/PA-PU composite. Furthermore, using LCP instead of Gr showed significantly improved mechanical properties and reduced processing viscosity. The tensile strength of 5%LCP/CF/PA-PU composite could reach 99.08 MPa, while the equilibrium torque was reduced, being 26.85% higher and 18.37% lower than those of CF/PA-PU composite, respectively. The thermal stability of LCP/CF/PA-PU composites was also enhanced. The addition of 5 wt.% LCP to CF/PA-PU composite increased the initial decomposition temperature by 14.19% compared to CF/PA-PU. In sharp contrast, the addition of Gr increased equilibrium torque and actual processing temperature leading to processing difficulties and instability. This approach offers a novel strategy for tribological applications and tackles the problem of high viscosity in CF/PA-PU composites.

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Section: Introductionmentioning

confidence: 99%

Tribological and Mechanical Applications of Liquid-Crystal-Polymer-Modified Carbon-Fiber-Reinforced Polyamide–Polyurethane Composites

Zhou

Wang

et al. 2023

Polymers

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“…At this stage, the task of searching and introducing polymeric materials and compositions with improved tribological and operational characteristics in relation to the applied commercial materials (polyamide and its compositions, polypropylene, polyesters, etc.) is acute [2].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermal Degradation Processes on the Physical-Mechanical and Rheological Properties of Polyketone

Vodyakov

Kotin

Kuznetsov

et al. 2020

KEM

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“…The final properties of products from thermoplastic polymers and composites depend on both the formulation [2] and the method of their manufacture. The vast majority of antifriction elements of tribological conjugations from polymer composites are currently manufactured by injection and compression molding [3].…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of the Forming Method on the Physical and Mechanical Characteristics of Thermoplastic Polymeric Materials

Kuzmin

Vodyakov

Kotin

et al. 2020

KEM

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This paper presents the results of the study of the effect of polymer materials compression and injection methods of molding on the physical and mechanical properties of the resulting samples. Widely used polymers such as poly-amide, thermoplastic elastomer and polyketone were taken as the objects of study. Granite composites based on polyamide were produced by PolyLab Rheomex RTW 16 twin-screw extruder, then modified with fine powders of schungite, graphite and silicon dioxide. Samples for testing in the form of double-sided blades were obtained by injection molding on a Babyplast 6/10V machine and compression molding on a Gibitre hydraulic press. Elastic-strength tests of the obtained samples were carried out on a tensile testing machine UAI-7000 M.

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New Polyamide Composites for Friction Power Cylinders of Agricultural Machinery

Cited by 3 publications

References 5 publications

Tribological and Mechanical Applications of Liquid-Crystal-Polymer-Modified Carbon-Fiber-Reinforced Polyamide–Polyurethane Composites

Tribological and Mechanical Applications of Liquid-Crystal-Polymer-Modified Carbon-Fiber-Reinforced Polyamide–Polyurethane Composites

The Effect of Thermal Degradation Processes on the Physical-Mechanical and Rheological Properties of Polyketone

Study of the Influence of the Forming Method on the Physical and Mechanical Characteristics of Thermoplastic Polymeric Materials

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