Lehrstuhl für Verbundwerkstoffe (CCe)

Neuigkeiten

27.02.2024

Phuangmali, I; Xu, Y.; Huang M.; Sun C.; Lin, L.; Schlarb, A.K.: Local thermal conditions influencing the mechanical properties of recycled polypropylene as a filament for fused filament fabrication. Polymer, Volume 296, March 2024, 126812.

DOI: https://doi.org/10.1016/j.polymer.2024.126812

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Local thermal conditions influencing the mechanical properties of recycled polypropylene as a filament for fused filament fabrication

27.02.2024

Phuangmali, I; Xu, Y.; Huang M.; Sun C.; Lin, L.; Schlarb, A.K.: Local thermal conditions influencing the mechanical properties of recycled polypropylene as a filament for fused filament fabrication. Polymer, Volume 296, March 2024, 126812.

DOI: https://doi.org/10.1016/j.polymer.2024.126812

This publication studies the sustainability of polypropylene waste by using fused filament fabrication and ultimately explores the mechanical performance of recycling polypropylene by applying the self-diffusion coefficient methodology. It is revealed that components printed at high temperatures and short time intervals have superior total accumulated diffusion, resulting in excellent mechanical qualities between the layers; which are comparable to those achieved through injection molding.

Dependence of the tribological performance of PEEK-based sustainable composites on the temperature

12.01.2024

Zhao, Y.; Lin, L.: Dependence of the tribological performance of PEEK-based sustainable composites on the temperature. Materials Today Sustainability, Volume 25, December 2023, 100625.

DOI: https://doi.org/10.1016/j.mtsust.2023.100625

As demonstrated in this paper, utilizing recycled carbon fibers in PEEK-based composites shows great promise in high-temperature applications. These environmentally sustainable and cost-effective composites exhibit wear resistance and friction performance comparable to, or better than, commercial products, offering a significant advancement in the field of tribomaterials while complying with environmental regulations.

Communicating through tribology research

28.09.2023

We are very glad and grateful to be part of two conferences in Japan and Germany with a focus on tribological research this week. For the past three days, we had a lot of fun presenting and discussing our research in tribological systems and sustainability through tribology at the Gesellschaft für Tribologie e.v. (GfT) Conference in Göttingen (Alois K. Schlarb, Yao Xu, Chi Hua, Shengqin Zhao). Meanwhile, around 9000km away, Leyu Lin and Yuxiao Zhao are introducing our findings around recycled materials in tribocomposites at the International Tribology Conference (ITC) in Fukuoka!

Kunststoffverarbeitung I & II

22.09.2023

  • Die Ergebnisse der Prüfung sind ab sofort im QIS einsehbar.
  • Die Prüfungseinsicht findet am 06.10.2023 zwischen 14 und 15 Uhr in 44-324 statt. Vorherige Anmeldung bei Dr.-Ing. Miaozi Huang ist unbedingt erforderlich.

On the environmental stress cracking of a vibration-welded polycarbonate (PC)-based nanocomposite

11.09.2023

Shi, S.; Lin, L.: On the environmental stress cracking of a vibration-welded polycarbonate (PC)-based nanocomposite. Polymer, 2023, 126338

DOI: https://doi.org/10.1016/j.polymer.2023.126338

Available free of charge until the 01.11.2023

Vibration welding and environmental stress cracking (ESC) represent two relevant and well-defined research subjects within the realm of polymer science. Within joining technologies, vibration welding is a widely used method that offers fast processing, strong bonding and cost-effectiveness. ESC is a phenomenon that occurs in polymers, when they are simultaneously exposed to a combination of mechanical stresses and stress cracking agents such as medication, lubrication, coatings and cooling agents to name a few. The present study shows that the addition of 1 vol.-% nanosilica leads to a significant increase in ESC resistance within welded materials offering a simple method to enhance the resistance of otherwise vulnerable welding seams against ESC. The improvement is attributed to the increased amount of plastic deformations and micro cavities induced by the nano-sized particles during fracture of the materials.

Artificial neural network accomplished prediction on tribology – A promising procedure to facilitate the tribological characterization of polymer composites

07.09.2023

Zhao, Y.; Lin, L.; Schlarb, A.K.: Artificial neural network accomplished prediction on tribology – A promising procedure to facilitate the tribological characterization of polymer composites. Wear, Volumes 532-533, 15 November 2023

DOI: https://doi.org/10.1016/j.wear.2023.205106

With artificial neural networks, the properties of tribological materials in sliding contact with steel can be predicted well on the basis of a reasonable number of experiments. This tool, which has rarely been used in tribology so far, enables a time- and cost-efficient material comparison of tribological materials and thus demonstrates the high performance of the method.

Hard work can also be fun

21.07.2023

In Dreisbach-Mettlach, the CCe organized a wonderful two-day retreat to determine the position and further develop the research topics of the chair, accompanied by a hike to the Saarschleife, traditional food, drinks and games beyond the professional horizon.

High-performance tribo-components through combination of materials on the macroscale

17.07.2023

Huang, M.; Ecke, N.; Schlarb, A.K.: High-performance tribo-components through combination of materials on the macroscale. Tribology International, Volume 187, September 2023, 108779

DOI: https://doi.org/10.1016/j.triboint.2023.108779

Available free of charge until the 31.08.2023

Abstract: The tribological performance of four different tribocomposite assemblies was comparatively investigated by sliding against a steel ring on a block-on-ring tribometer in a wide range of surface pressure (p) and sliding velocity (v), and the experimental results were described by a model. The results show that the friction coefficient in the stationary friction phase and the specific wear rate of the composite assemblies tend to follow the superior partner. Surprisingly, it is also found that the pv-load limit can be shifted to the higher pv-limit of the better partner. The results of the present work clearly show that the macroscopic combination of tribocomposites can be an excellent approach for the fabrication of tribological components, e.g. bearings, with long lifetime, high energy and eco-efficiency.

CCe in Portugal!

06.07.2023

Greetings from the 20th International Conference on Experimental Mechanics in Porto! The objective of this series of conference is to provide a forum for the discussion and dissemination of recent advances in Experimental Mechanics and its applications in structures, materials, biomechanics and many other fields of science and engineering.

On this occation, the CCe was given the opportunity to hold talks on the topic “On the Environmental Stress Cracking of Vibration Welded Thermoplastic-Based Nanocomposites” (Simon Shi) and “Contact Temperature-Induced Welding Properties of Thermoplastics using Fused Filament Fabrication” (Yao Xu). It was a pleasure to participate again in person! Thank you for ICEM community for the great and insightful discussions, we are looking forward to many more to come! 

Neuer Zeitschriftenbeitrag

26.06.2023

Hua, C.; Zhao, S.; Lin, L.; Schlarb, A.K.: Tribological performance of a polyethersulfone (PESU)-based nanocomposite with potential surface changes of the metallic counterbody. Applied Surface Science, Volume 636, 2023

DOI: https://doi.org/10.1016/j.apsusc.2023.157850

https://authors.elsevier.com/a/1hJCvcXa-4Yj-

 

Zeitschriftenbeiträge

Enhanced wear resistance of sustainable tire materials with plasma modified pyrolysis carbon black

24.06.2023

Our new study on sustainable tire materials focuses on the topic of end-of-life tires (ELTs) recycling. A pyrolysis carbon black (CBp) obtained from scrap tires was treated by air-jet milling and plasma modification. Compared to rubber compounds filled with standard carbon black, the modified filler caused an extensive improvement in the mechanical properties, wear resistance and ground traction of the material.

https://doi.org/10.1016/j.carbon.2023.118201

Neuer Zeitschriftenbeitrag

12.06.2023

Zhao, S.; Tang, D.; Fang, Y.; Hao, X.; Liu, Y.; Liu, J.; Zhao, H.; Sun, C.; Hua, C.; Schlarb, A.K.; Lin, L.: Enhanced wear resistance of sustainable tire materials with plasma modified pyrolysis carbon black. Carbon 2023

DOI: https://doi.org/10.1016/j.carbon.2023.118201

Zeitschriftenbeiträge

FFF printed PP specimens non-isothermal crystallization

Zeitschriftenbeitrag jetzt auch gedruckt:

28.01.2023

Schlarb, A.K.; Ecke, N.; Kamerling, S.; Zhao, Y.; Lin, L.: Performance and mechanisms of different tribological thermoplastic composites in sliding contact with steel. Journal of Thermoplastic Composite Materials, pp. 642–656, Volume 36 Issue 2, February 2023; First published Online June 30, 2021

Neuer Zeitschriftenbeitrag

26.01.2023

Xu, Y.; Huang, M.; Schlarb, A.K.: The importance of local process conditions on the properties of fused filament fabrication printed polypropylene components. Journal of Applied Polymer Science, e53667

DOI: 10.1002/app.53667

WAK-Preise für Sebastian Kamerling und Tianchen Hong

27.10.2022

Dr.-Ing. Sebastian Kamerling wurde auf der Sonderschau der K2022 für seine Dissertation mit dem Titel „Gezielte Nutzung der chemischen Umwandlung von Magnesiumhydroxid - ein neuer Ansatz für die Polymertribologie“ mit dem Wilfried-Ensinger-Preis des Wissenschaftlichen Arbeitskreises der Kunststofftechnik (WAK) ausgezeichnet. Die Gutachter würdigen die Arbeit mit folgenden Attributen:  Herausragende Idee, die zu einem relativ kostengünstigen Werkstoff führt, handwerklich hervorragend, methodisch-wissenschaftlich sauber, sehr gut gelungene Verbindung von experimentellen und simulativen Methoden.

Der von der Wilfried und Martha Ensinger Stiftung gestiftete Preis wird jährlich für die beste Abschlussarbeit (Diplomarbeit/Masterarbeit) und für die beste Dissertation für die Entwicklung und Beschreibung technischer Kunststoffe vergeben und ist für die Dissertation mit 5000 EUR dotiert.

Auf der gleichen Veranstaltung wurde Tianchen Hong für seine Masterarbeit mit dem Titel "Study on the friction and wear behavior of different composites fabricated via injection molding and fused deposition modeling (FDM)" mit dem Oechsler Preis des WAK ausgezeichnet.

Der von der Oechsler AG gestiftete Preis würdigt jährlich jeweils die beste Abschlussarbeit und beste Dissertation für Methoden und Ansätze zur Entwicklung und Konstruktion von Bauteilen aus Kunststoffen. Der Preis für die beste Abschlussarbeit ist mit 3500 EUR dotiert.

„Mit Hybriden die Grenzen zwischen den Werkstoffklassen überwinden“

19.10.2022
Prof. Dr.-Ing. Alois K. Schlarb plädiert für mehr Miteinander bei Werkstoffen und in der Kunststoffbranche

in K-PROFI Ausgabe 7-8/2022

Prüfungsergebnisse

14.10.2022

Die Ergebnisse der Prüfung Kunststoffverarbeitung sind verfügbar

Informationen

Herzlichen Glückwunsch Dr.-Ing. Miaozi Huang!

Smarte tribologische Prüfung von Kunststoff/Metall-Systemen

Stellenausschreibung

05.05.2022

Neue Stellenausschreibung verfügbar:

Wissenschaftliche Hilfskraft

Oberingenieur Dr.-Ing Sebastian Kamerling

01.04.2022

Zum 1. April nimmt Dr.-Ing. Sebastian Kamerling seine Tätigkeit als Oberingenieur am Lehrstuhl für Verbundwerkstoffe (CCe) auf und wird dadurch vielfältige Verantwortungen bzgl. der Ausrichtung des Lehrstuhls und dessen Organisation übernehmen.

Hr. Kamerling ist seit Juli 2016 als wissenschaftlicher Mitarbeiter am CCe beschäftigt und wurde im Oktober 2021 für seine Arbeit zum Thema "Gezielte Nutzung der chemischen Umwandlung von Magnesiumhydroxid - ein neuer Ansatz für die Polymertribologie" promoviert. Sein Forschungsschwerpunkt liegt in der Optimierung kunststoffbasierter hybrider Werkstoffe für tribologische Systeme.

Neuer Zeitschriftenbeitrag

16.03.2022

Xu, Y.; Huang, M.; Schlarb, A.K.: Print path-dependent contact temperature dependency for 3D printing using fused filament fabrication. Journal of Applied Polymer Science, e52337, 2022. DOI: http://doi.org/10.1002/app.52337

Zeitschriftenbeiträge

Stellenausschreibung

03.03.2022

Neue Stellenausschreibung verfügbar:

Wissenschaftliche Hilfskraft

Kontakt

Tel.: +49 631 205 4631

Fax: +49 631 205 5141

cce-sekretariat(at)mv.rptu.de

 

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Gebäude 44-330

67663 Kaiserslautern

 

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