SPE Library

The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.

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Conference Proceedings
Optimizing Color: A Pigment- And Surface-Chemistry Perspective
Christopher Beier, May 2018
Effectively dispersing organic pigments within polymeric matrices is essential in maintaining consistent color and physical properties. Each and every pigment is chemically and physically unique, allowing for a myriad of potential molecular and macroscopic interactions to take place. This paper will discuss the physical (e.g. particle size, shape, distribution, morphology, surface area, porosity, etc.) and chemical (surface energy, polarizability, zeta potential, solubility, hydrophilicity, hydrophobicity, etc.) properties impacting a pigment’s interaction with its environment.
Keynote: Color Theory And Test Methods.
Ann Smeltzer, May 2018
This is a presentation based upon the SPECAD Technical members collaborative efforts to provide support to divisions and educational organizations.
KEYNOTE: Evolution of Thermoplastic Composites in Portable Electronics
Nicholas Abbatiello, May 2018
Consumer Electronics faces certain design challenges that are similar to Automotive and Aerospace segments. Namely, how do you optimize weight, while maintaining performance standards in order to meet end use product requirements. Focus on achieving the thinnest and lightest notebook computer drives the need to examine composites fit in material selection process. The evolution of thermoplastic composite materials and manufacturing processes will be the key to enabling high volume adoption.
Fundamental Understanding Of Tribological Behavior Of Multiphase Polymeric Systems Using Fem Modeling
Mohammad Hossain, May 2018
Three-dimensional finite element method (FEM) modeling has been carried out to study the influence of dispersed particles on tribological behavior of multiphase polymeric systems. Specifically, effects of particle type and volume fraction on scratch behavior of multiphase polymeric systems have been investigated. The FEM findings correlate well with the experimentally observed scratch-induced damages. The results show that type and concentration of particles can drastically affect the stress and strain field development during the scratching process.
Effects Of Different Fillers On The Thermo-Mechanical Properties And Coefficient Of Linear Thermal Expansion Of Polypropylene Composites
Manjusri Misra, May 2018
We study and report on the effect of different fillers on the coefficient of linear thermal expansion (CLTE) of polypropylene (PP) by melt extrusion technique. We examine and review the effect of some fibers such as glass fiber and carbon fibers as well as traditional mineral filler like talc. Moreover, we study the effect of new biocarbon as an environmentally friendly filler on the CLTE of neat PP and compare with the previous samples. On the basis of these results, properties and potential applications of PP composites are discussed.
Numerical And Experimental Studies On Flow And Warpage During Resin Transfer Molding Process
Sejin Han, May 2018
In this paper, the numerical and experimental studies of flow and warpage of thermoset materials in a resin transfer molding (RTM) process are described. We give introduction to the theory and methods of simulation for the flow and warpage analysis. Further, two example cases are shown. One is a case where the flow during RTM process is studied. Another is the case where the warpage analysis is performed. The simulation results in this study are in good agreement with experimental results.
Developing Ultrasonic Processing Of Cnt Nanopaper/Solventless Epoxy Prepreg
Dan Zhang, May 2018
In this work, we propose an environmentally friendly innovative ultrasonic process to impregnate solventless epoxy into carbon nanotube (CNT) nanopaper (NP) (approximately 50 um thick) for fabricating prepreg nanocomposites. Both multi-wall carbon nanotube (MWNT) NP and single-wall carbon nanotube (SWNT) NP are used for prepreg fabrication. The prepregs show multi-functional performance in EMI shielding and sand erosion resistance. Process parameters including ultrasound time, amplitude level and pressure are studied for the fabrication process.
Digital Inkjet For Direct To Object Printing
Jeff Peterson, May 2018
This presentation will discuss digital inkjet technology and how it is being used for a variety of direct to object printing. It will include information on using the right type of inkjet printer (flatbed, conveyorized, or cylinder printer). It will also outline trends in the industry and how this type of technology is projected to grow.
Digital Printing Technologies For Plastics – Focus on Color Inkjet and Laser Marking
Jeff Peterson, May 2018
This presentation will examine both digital decorating processes - laser marking and digital inkjet - and look at the advantages and disadvantages of each. The discussion will include suggestions on which process is best for particular plastics decorating applications.
Effects Of Processing Variables On Crystallization Phases Of P(Vdf-Trfe-Cfe) Thin Films
hao pan, May 2018
In this work, Poly (vinylidene fluoride-trifluoro-ethylene-chlorofluoroethylene) terpolymer [P(VDF-TrFE-CFE)] has been prepared as thin films with different processing conditions including coating temperature, annealing temperature and nanoclay loading level. The chain conformation of obtained films was studied by Fourier transform infrared (FTIR) and X-ray diffraction (XRD). It is shown that lower coating temperature is favorable for obtaining β-phase crystals, whereas higher annealing temperature leads to α-phase. Nanoclay can be added to increase total crystal amount.
New Transparent High Heat Polycarbonate Copolymer Resins For Thermo-Optical Applications
Mark van der Mee, May 2018
SABIC has launched a new LEXANTM CXT resin portfolio designed to offer potential solutions for optical lenses with its unique combination of high heat resistance, water clear transparency and high flow in a broad processing window. The high heat resistance of these resins may allow the use of assembly processes like low temperature soldering of parts onto printed circuit boards, and/or demanding part operation conditions. The high flow capability of LEXAN CXT resins without excessive yellowing may allow significant benefits in productivity and system cost.
Reduced Density Polyamide 66 Compounds For Extrusion Applications
Ying Shi, May 2018
Polyamide 66 is widely used in the automotive industry especially for under the hood applications where resistance to high temperature, pressures, and various chemicals are needed. This paper describes the preparation of high melt viscosity, light weighting, and reinforced polyamide 66 compounds made from common injection molding grade. This material is suitable for blow molding and sheet extrusion applications where high melt strength is required. The viscoelastic properties of the compounds were characterized using capillary and oscillation rheometer.
How Polymer Rheology Impacts The Extrusion Blow Molding Process
Todd Hogan, May 2018
Will provide once it clears the Dow internal release process
Clear Impact Co-Polymers For Thermoforming
Kevin Herrington, May 2018
A new technology from Braskem extends the use of clear polypropylene to thermoformed containers for refrigerated conditions. Typical clear polypropylenes have poor impact properties at low temperature. Polypropylene impact copolymers have greatly improved impact properties compared to polypropylene homopolymers and random copolymers but are opaque. This work explores what causes haze in thermoformed polypropylene impact copolymers, how that haze can be improved, and how Braskems new impact copolymer compares to conventional impact copolymers, random copolymers, and with blends.
Modeling Film Behavior In Pallet Unitization Applications
Pavan Valavala, May 2018
Paper will present how modeling can help establish a relationship between film material properties and application performance.
Extrusion Performance Analysis Protocol
David Kazmer, May 2018
Instrumentation and analytical methods are presented for on-line, real-time analysis of performance in single screw extrusion processes. The methodology implements analytical models for heating and cooling power for each zone, screw torque, apparent viscosity, and specific energy. In additional, numerical methods are implemented to provide real-time estimate of the process variation. The protocol defines volumetric, adiabatic, theoretical, and robustness efficiency measures useful for extrusion process engineering and optimization. Validation data is provided for general-purpose and barrier screw designs.
Cost Analysis For Installing New And Optimized Screws For Single-Screw Extrusion Lines
Mark A. Spalding, May 2018
Optimization of an extrusion process for maximum rate and product quality can lead to substantial cost reductions. The value to the converter can be very large and thus the payback period can be very short. This paper discusses the economic evaluations of two commercial case studies.
A Simple System Analysis For The Small Extrusion Screw And Die
Jingyi Xu, May 2018
A simple system analysis for the small screw and die in extrusion line is one of the keys to design the screw and optimize the machine performance. It explains several critical issues and features of plasticizing and extrusion performances in small extruder and die. This simplified model of small extruder will be used to analyze the size of the screw and specific die with different screw parameters as a system. The result is useful to design the small size screw, and to optimize the performance of the small extruders.
Melting And Residence Time In The Single Screw Extrusion
Clemens Martin Grosskopf, May 2018
The image analysis of the investigation of the melting process, as Maddock has already done in 1959, is further developed by means of modern image analysis. The experiments are carried out on the two most common screw types in the plastics industry: the general-purpose screw and barrier screw. Control of the residence time is essential for the production of high-quality products and is also important for biodegradable and other time-sensitive polymers. The results indicate that both the general- purpose screw and the barrier screw have significant stagnation zones and broad residence time distribution.
Evaluation Of Thermoplastic Polyurethane (TPU) Resins As Possible Substitues Of Current Resins For Escalator Handrails
Qingping Guo, May 2018
Two new thermoplastic polyurethanes (TPU) were evaluated in their possibility to substitute two TPUs currently used in the production of escalator handrail. The assessment is carried out through comparison of their thermal, rheological and mechanical properties. It was found that although the new TPUs show promise, changes should be carried out to make them more compatible with the current process set up and conditions.

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How to reference articles from the SPE Library:

Any article that is cited in another manuscript or other work is required to use the correct reference style. Below is an example of the reference style for SPE articles:

Brown, H. L. and Jones, D. H. 2016, May.
"Insert title of paper here in quotes,"
ANTEC 2016 - Indianapolis, Indiana, USA May 23-25, 2016. [On-line].
Society of Plastics Engineers
Available: www.4spe.org.

Note: if there are more than three authors you may use the first author's name and et al. EG Brown, H. L. et al.

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