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.

The SPE Library is just one of the great benefits of being an SPE member! Are you taking advantage of all of your SPE Benefits?

Not an SPE member? Join today!

Use % to separate multiple keywords. 

Search SPE Library
After Date: (mm/dd/yy)  
Sort By:   Date Added  ▼  |  Publication Date  ▼  |  Title  ▼  |  Author  ▼
= Members Only
Conference Proceedings
A Injection Molded High Electromagnetic Shielding and Low Cost Carbon Fiber Composites
Wern-Shiarng Jou, Huy-Zu Cheng, Chih-Ming Weng, Yu-Jen Hsu, May 2004
The high electromagnetic shielding and low cost woven carbon fiber composites were developed. In this study, continuous carbon fibers were woven as a conductive network with different mesh size. For an adequate SE performance that is realistic for an industrial application (40 dB), the required weight percentage of continuous carbon fibers applied in the injection molded composites is about 1%, which is much lower than that of conventional (more than 30%) discontinuous long carbon fiber composites.
Insights into the Formation and Properties of Well-Exfoliated Nanocomposites
T.D. Fornes, D.R. Paul, May 2004
The work presented here focuses on two key issue of nanocomposites: how to achieve high levels of exfoliation of the clay platelets and to what extent the resulting benefits can be explained by conventional composite theories, i.e., is there a nano-effect" whereby the platelets significantly alter the local properties of the matrix?"
Producing Polymer Nanocomposites with Exfoliated Pristine Clay
Jingshen Wu, Ke Wang, Jia Liu, Ling Chen, Chaobin He, May 2004
A new technique was developed to promote clay exfoliation in an epoxy matrix. Both XRD and TEM microscopic examination results demonstrated that pristine clay could be well-dispersed and exfoliated in an epoxy resin through this technique. In this paper, the technical details and experimental evidences are presented.
Multiscale Modeling of Biological Nanocomposite Nacre
Dinesh R. Katti, Kalpana S. Katti, Shashindra Man Pradhan, May 2004
Nacre, the inner layer of seashells is a biological nanocomposite having extraordinary mechanical properties. A multiscale modeling approach has been used to study the nano and microarchitecture of nacre to gain an understanding of the role of the architecture on the mechanical response. The role of biopolymers, mineral and various nuances in nacre and their effect on mechanical properties are presented in the paper.
Micro-Deformation and Fracture Behavior of Epoxy Based Nanocomposites with Highly Exfoliated Pristine Clay
Jingshen Wu, Ke Wang, Ling Chen, Chaobin He, Albert F. Yee, May 2004
Fracture behaviors of nanocomposites based on epoxy and highly exfoliated pristine clay were tested using double cantilever beam specimens. Micro-deformation mechanisms of the epoxy/clay composites under load were investigated using SEM and TEM. Numerous micro-cavities associated with clay particles are believed to be the major mechanism for the improved fracture toughness of the epoxy/clay nanocomposites.
Tensile Property, Morphology and Micro-Deformation of Polypropylene/CaCO3 Nanocomposites
Yan Zhang, Chi-Ming Chan, Jingshen Wu, May 2004
Stress-strain relations of polymer nanocomposites at different strain rates were studied using polypropylene (PP) and calcium carbonate nanoparticles. The morphology and deformation mechanisms of nanocomposites were studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Debonding and cavitation at the matrix/particle interfaces were identified as the major deformation mechanisms of the PP/CaCO3 nanocomposites under uniaxial tension.
Fracture Behavior of Core-Shell Rubber-Toughened ?-Zirconium Phosphate-Based Epoxy Nanocomposites
H.-J. Sue, K.T. Gam, N. Bestaoui, A. Clearfield, M. Miyamoto, N. Miyatake, May 2004
The fracture behavior of core-shell rubber (CSR) toughened ?-zirconium phosphate (ZrP) epoxy nanocomposite is investigated. The combined use of ZrP and CSR can greatly improve both the modulus and fracture toughness of epoxy. The fracture mechanisms change from brittle fracture via ZrP delamination to matrix shear yield after addition of CSR. Approaches for producing toughened high performance polymer nanocomposites are discussed.
Mechanical Properties and Fracture Behavior of Epoxy Nanocomposites with Highly Exfoliated Pristine Clay
Ke Wang, Jingshen Wu, Ling Chen, Chaobin He, Meiling Toh, May 2004
A group of epoxy nanocomposites with well-dispersed and highly exfoliated pristine clay was prepared by a new patent-pending technique. The nanocomposites exhibit much-improved modulus as well as fracture toughness compared to the neat epoxy. The morphology, deformation behavior and toughening mechanisms of the nanocomposites were studied.
Comparison of the Effect of Pigments on the Mechanical and Thermal Properties on Two Different Catalysed Propylene-Ethylene Random Copolymers
I.F.M. Major, G.M. McNally, A. Clarke, H. Ross, May 2004
Two different catalysed propylene-ethylene random copolymers containing a 0-8% red organic pigment were injection moulded. Mechanical analysis showed the Ziegler-Natta catalysed polymer to have lower tensile modulus, higher % elongation, lower break strength and higher impact strength than the metallocene copolymer. Thermal analysis highlighted the differences in the structure between the two propylene-ethylene copolymers.
Effects of Carbon Nanofibers on Polystyrene Nanocomposites and Foams
Jiong Shen, L. James Lee, May 2004
With extraordinary mechanical properties, carbon nanofibers (CNF) are expected to serve as reinforcements for both lightweight and ultrastrong composite materials. In this study, we used CNF as the reinforcing nanoelements to synthesize polystyrene/CNF nanocomposites by the in-situ polymerization process. The obtained composites were further foamed using supercritical CO2 as the foaming agent. A homogeneous dispersion of CNF was observed and the final PS/CNF nanocomposite foam showed microcellular foam morphology.
On-Line Birefringence Measurement in Film Blowing Process
Hiroshi Ito, Ken-ichi Suzuki, Takeshi Kikutani, Ho-Jong Kang, Toshitaka Kanai, May 2004
On-line measurements of velocity, bubble diameter, temperature and three principal birefringences were performed during the tubular film extrusion of polypropylene at various draw ratios and blow-up ratios. Birefringence increased rapidly in the vicinity of the frost line height where the crystallization started. Birefringence between MD and ND showed the maximum value near the solidification position, and then it decreased with increasing distance from the die, and eventually the obtained PP film showed almost uniaxial molecular orientation.
Computational Materials at NASA Langley Research Center
Thomas S. Gates, Jeffrey A. Hinkley, May 2004
The paper provides details on the structure and implementation of the Computational Materials Program at the NASA Langley Research Center. Examples are given that illustrate the suggested approaches to predicting the behavior and influencing the design of nanostructured materials such as high-performance polymers, composites, and nanotube-reinforced polymers. Primary simulation and measurement methods applicable to multi-scale modeling are outlined. Key challenges including verification and validation of models are highlighted and discussed within the context of NASA's broad mission objectives.
Mechanical Properties of Injection Molded Glass Fiber Reinforced PC/ABS with PC Oligomer
Susumu Takashima, Satoko Baba, Hiroyuki Hamada, Machiko Mizoguchi, Takashi Kuriyama, May 2004
In this study, the effect of PC-oligomer on mechanical properties and internal structure of injection molded glass-fiber reinforced PC/ABS was investigated. The mechanical properties of PC/ABS with PC-oligomer were lower and the difference became larger with increasing GF content. However, the internal structure was different from the surface to the middle layer through thickness direction. It is thought that this difference in structure and the dispersion of GF affected the mechanical properties of the composites.
Modeling of Viscoplastic Constitutive Equation for Inelastic Deformation of Polymer with Unloading
Mamoru MIZUNO, Yukio SANOMURA, May 2004
A viscoplastic constitutive equation for inelastic deformation of polymers was formulated by combining the kinematic hardening creep theory of Malinin and Khadjinsky with the nonlinear kinematic hardening rule of Armstrong and Frederick. The nonlinear kinematic hardening rule was modified in order to describe peculiar inelastic deformation of polymers during unloading in particular. Experimental results for polyethylene were simulated by the constitutive equation and the validity of the modification was verified.
Mechanical Properties of PC/ABS Ultra High-Speed Injection Moldings
Satoko Baba, Susumu Takashima, Yew Wei Leong, Hiroyuki Hamada, Machiko Mizoguchi, Takashi Kuriyama, May 2004
Effect of the content of PC/ABS and injection speed on the mechanical properties of PC/ABS ultra high-speed injection moldings, in which ABS content was varied, was investigated. Tensile modulus of near the surface evaluated using sliced specimen showed the highest values, and flexural modulus of the specimen was higher.
Influence of Gamma Radiation Dose and Loading Rate on Fracture Toughness of Polycarbonate
Naylor S. Melo, João C. Miguez Suarez, May 2004
Fracture toughness of a polycarbonate plate was measured as a function of gamma radiation dose and loading rate using a SENB specimen. The fracture surfaces were analyzed by SEM. The test results showed that the material presents a ductile-to-brittle transition as the radiation dose and loading rate increase.
Determination of Scratch Behaviour of Molded Plastics
Hiromi Kita, Maki Makoto, May 2004
Scratch behavior in several types of plastics have been investigated in order to develop scratch test method for plastics. The effects of scratching conditions such as scratch speed and normal load on scratch behavior have been discussed. The scratch behavior was classified into three modes (i.e. ploughing, wedge formation and cutting) based on the vertical scratch tip displacement and the horizontal load during the scratch process and scratched surface observation. A concept of scratch behavior evaluation is described by using mapping technique and some of the typical results are introduced.
Evaluation of Scratch Resistance of Polymers
M.-H. Wong, G.T. Lim, F. Lee, W.-J. Boo, H.-J. Sue, May 2004
In this paper, the equivocal issue of scratch resistance of polymers is treated. Through experimental effort using a custom-built scratch test device, scratch hardness and scratch visibility are found to be the key considerations in quantifying the scratch resistance of a polymer. However, scratch hardness and scratch visibility are not necessarily interrelated. Care has to be taken to evaluate scratch resistance of polymers. Approaches for improving scratch resistance of polymers will also be discussed.
Structural Formation of Amorphous Poly(ethylene Terephthalate) during Uniaxial Deformation above and below Glass Temperature
Daisuke Kawakami, Benjamin S. Hsiao, Shaofeng Ran, Christian Burger, Igors Sics, May 2004
The structural formation of PET under uniaxial stretching above and below Tg using in-situ WAXD and SAXS by synchrotron radiations was studied. Some new insights into the strain-induced mesomorphic transition were obtained. These structural developments are closely related to the mechanical responses, which have not been observed previously.
Use of Thermography in Craze Growth and Plastic Zone Studies of Polycarbonate
Rahul Patki, Paul J. Phillips, Bing Yang, Peter K. Liaw, May 2004
The occurrence of a plastic deformation zone ahead of the crack tip in fracture of thin films and sheets of polycarbonate has been reported by several authors. This presentation will report the use of a high-speed thermographic imaging technique for studying the temperature rise at the crack tip as well as the shape and temperature distribution of the plastic zone in polycarbonate sheets. The technique was used to monitor craze and crack growth in compact tension tests. New trends in the growth of the plastic zone and the crack propagation mechanism were observed.

This item is only available to members

Click here to log in

If you are not currently a member,
you can click here to fill out a member application.

We're sorry, but your current web site security status does not grant you access to the resource you are attempting to view.

  Welcome Page

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.

If you need help with citations, visit www.citationmachine.net