Energy - Clemson Composites https://clemsoncomposites.com A new center at Clemson University Fri, 03 Apr 2020 16:57:12 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 Novel surface grafting methods adopted to evaluate properties of CNC nanocomposite https://clemsoncomposites.com/novel-surface-grafting-methods-adopted-to-evaluate-properties-of-cnc-nanocomposite/?utm_source=rss&utm_medium=rss&utm_campaign=novel-surface-grafting-methods-adopted-to-evaluate-properties-of-cnc-nanocomposite Tue, 31 Mar 2020 16:12:19 +0000 https://clemsoncomposites.com/?p=249374

Surface Grafting Methods adopted to evaluate properties of CNC Nanocomposite

CELLULOSE NANOCRYSTAL (CNC) has exceptional properties, however, its strong tendency to agglomerate during the melt processing largely hindered its application as reinforcing filler for the commodity composite.

NANOCOMPOSITE

We are endeavoring to address this dispersion problem, towards which studies are conducted in the directions of:

  • Rational designing the CNC-matrix interface
  • Engineering CNC surface for high-performance CNC nanocomposite
  • Developing industrial viable strategies for the CNC nanocomposite production;
  • Unlocking CNC’s potential as a bubble nucleating agent for the microcellular injection molding technology (Mucell)

RESEARCH AND PROPERTIES

Clemson researchers adopted novel surface grafting methods to evaluate the impact of the graft characters on the properties of the CNC nanocomposite. The properties of the composites are not only determined by the matrix and the filler, but also the filler-matrix interface.

This is especially true for the nanocomposites that a large area of interface exists and influences the composites’ properties such as thermal conductivity, stress transfer, and gas distribution. By adapting the covalent grafting or physical adsorption, the CNC-matrix interfacial interaction could be tuned by adjusting the graft length, graft density, and the graft polymer species.

The encapsulation of aqueous cargo is a widely acknowledged challenge despite its tremendous industrial value for numerous applications, ranging from self-healing and drug delivery to cosmetics and pesticides.

The study demonstrates an effective method to encapsulate a hydrophilic payload through the use of polyurethane‐poly (melamine‐formaldehyde) (PU‐PMF) dual‐component capsules based upon the water‐in‐oil‐in‐oil (W/O/O) emulsion template.

The image shows how the middle oil layer of a “water-in‐oil‐in‐oil” (W/O/O) emulsion is formed, and how the dual‐component capsule shell is created based on this double‐emulsion template. The as‐prepared capsule exhibits a dense and strong shell with tunable size.

illustration of blending methods and interface

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Enabling Industry 4.0 for Multi-tiered Quality and Process Control in Precision Manufacturing of Composites https://clemsoncomposites.com/enabling-industry-4-0-for-multi-tiered-quality-and-process-control-in-precision-manufacturing-of-composites/?utm_source=rss&utm_medium=rss&utm_campaign=enabling-industry-4-0-for-multi-tiered-quality-and-process-control-in-precision-manufacturing-of-composites Mon, 30 Mar 2020 18:42:37 +0000 https://clemsoncomposites.com/?p=249351

Enabling Industry 4.0 for Multi-tiered Quality and Process Control in Precision Manufacturing of Composites

AS PART OF A SCRA GRANT for the unification of various connected systems, Clemson researchers deployed a supervisory control and data acquisition (SCADA) system program called Ignition on a Windows server hosted at a Clemson University data center. The system was connected to a MySQL database for continuous logging of all desired parameters for the various devices and machines connected to Ignition.

DATA ACQUISITION

The program enables connections via OPC UA, MQTT, Modbus TCP, and various proprietary drivers (e.g. Siemens, Omron). A wide range of devices were connected to Ignition, including the injection molding machine (through a route ending in an OPC UA server), an in-mold sensor system, a twin screw extruder, a remote data acquisition system for downstream extrusion equipment, and multiple remote temperature and input sensors throughout the labs. Interfaces were made to visualize the data from these systems on both desktop and mobile devices and enable control where available.

PARTNERSHIPS AND ACHIEVEMENTS

PROJECT GOALS

  1. Develop methods to predict part quality of an injection molded part using process parameters and data from the machine.
  2. Develop database and machine learning systems designed to work with injection molding processes.
  3. Develop unique tool with sensor to measure temperatures and pressure inside the cavity.
  4. Develop more robust feedback loop to optimize process parameters.

PARTNERS

  • South Carolina Research Authority (SCRA)

PUBLICATIONS

Engel injection molding

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Ultra-lightweight 100% recyclable scalable production door https://clemsoncomposites.com/ultra-lightweight-100-recyclable-scalable-production-door/?utm_source=rss&utm_medium=rss&utm_campaign=ultra-lightweight-100-recyclable-scalable-production-door Wed, 25 Mar 2020 14:12:55 +0000 https://clemsoncomposites.com/?p=249314

ULTRA-Lightweight 100% recyclable scalable production door

IN 2016, CLEMSON UNIVERSITY RESEARCHERS began work for a $5.8 million grant from the U.S. Department of Energy to pioneer technology for fuel-savings, energy efficiency, and to meet the U.S. corporate average fuel economy standards.

RECYCLABILITY

Working with industry partners, the Clemson team engineered and constructed an ultra-lightweight thermoplastics composites door that enables innovation for greenhouse gas reduction, recyclability, and circular economy.

John W. Gillespie, director of the University of Delaware Center for Composite Materials (CCM), and assistant director Shridhar Yarlagadda issued a joint statement:

“Clemson and CCM are establishing a strong partnership to merge auto systems design with composites materials, design and manufacturing to lightweight composites door for high-volume production.”

PARTNERSHIPS AND ACHIEVEMENTS

GOALS

  1. Achieve a 42.5% weight reduction
    • Base weight = 31.8 kg | Target Weight = 18.28 kg
  2. Zero compromise on performance targets
    • Similar crash performance
    • Similar durability and everyday use/misuse performance
  3. Maximum cost induced is 5$ per pound. (.453 kg)
    • Allowable cost increase = $ 150.1 per door
  4. Scalability
    • Annual production of 20,000 vehicles
  5. Recyclability
    • Project goal is 100% recyclable (self imposed)

PARTNERS

  • Honda R&D Americas
  • U.S. Department of Energy
lightweighting door illustration

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