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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Shear rheological analysis has led to a new insight into the relationship between the first normal stress difference, the dispersion of filler material, and the applied shear stress on polymer nanocomposites.
A comparison of the shear and extensional properties of glass and wollastonite fibers in composite materials shows that they increase the fluid elasticity, relaxation time, and storage modulus of composites.
Modeling the behavior of short-fiber reinforced thermosets during the molding process remains one of the most difficult challenges for successful thermoset part design. This presentation covers examples of thermoset molding best practices and explains how advanced simulation techniques can help predict flow behavior and overcome issues frequently encountered with short-fiber thermoset molding. Factors considered include part geometry thermodynamics molding pressures and fiber orientation.
Graphene-based nanocomposites demonstrate superior electrical mechanical physical and thermal properties. Because of this they have moved swiftly from the research laboratory into the marketplace in applications in aerospace automotive coatings electronics energy storage and paints. Based on the huge interest enhanced properties as well as ease of production and handling the European Union is funding a 10 year $1.73 billion coordination action on graphene; South Korea is spending $350 million on commercialization initiatives; and the United Kingdom is investing $76 million in a commercialization hu because many current and potential applications for carbon nanotubes may be replaced by graphene at much lower cost. The main objective of this study was to characterize the influence of exfoliated grapheme nanoplatelets (xGnP) particle diameter filler loading and the addition of coupling agents on the mechanical rheological and thermal properties of xGnP-filled impact-modified polypropylene (IMPP) composites.
Hugo Renkema, Bart Hofstede, Menno Claase, Marcel Schutte, Paul Vercoulen, September 2013
This paper describes the powder in mould coating process (PIMC) in combination with sheet moulding compound (SMC). A powder coating is applied to a preheated mould to pre-gel. SMC is placed into the mould and pressed as one with the PIMC to cure together inside the mould. When the SMC is removed from the mould it comes out coated with a highly durable super smooth powder coating layer which has a strong adhesion to the SMC. The coating has good barrier properties hardness flexibility and abrasion resistance. With the unique controlled chemistry based on durable unsaturated polyester and vinylether urethane the coating properties and curing behavior can be fine tuned to automotive requirements. Rheological curing studies were conducted to investigate the curing behavior.
Short-fiber-reinforced thermoplastics are a feasible alternative to develop lightweight materials for semi-structural applications. These materials present a layered structure showing a complex fiber orientation distribution along the molding. The details of fiber orientation in a center-gated disk with diameters of 1.38 and 2.05 mm were obtained in several regions including the gate and advancing front. Several modifications were introduced in the method of ellipses to obtain unambiguous orientation measured over small sampling area. Two fiber suspensions (30 % short glass-fiber PBT and PP) with different rheological characteristics were used in these experiments. The results showed an asymmetric distribution of fiber orientation that gradually washs out as the flow progress. In addition the initial orientation measured at the gate presented a fiber distribution different from the random orientation that is assumed in literature for a center-gated disk.
Suong Van Hoa, Tan Minh Ton-That, Tri-Dung Ngo, May 2013
High-shear, high-temperature pre-mixing followed by controlled curing at elevated temperature better disperses and intercalates organoclays in epoxy nanocomposites, improving their mechanical performance.
Neil McManus, Costas Tzoganakis, Yan R. Wu, May 2013
Vinyl terminated polypropylene (PP) and mono-vinyl terminated polydimethylsiloxane (PDMS) have been reacted in the melt phase with Grubbs second generation catalyst to, synthesize PDMS modified PP copolymers. Some chemical, physical and rheological properties of produced materials are determined and the results indicated the feasibility of cross metathesis (CM) reaction in melt phase.
Dynamic melt rheology was used to characterize poly(ethylene terephthalate) (PET) supplied from manufactures across the globe. The zero shear viscosity and the molecular weight of the polymers were determined. This rheology method is more sensitive than traditional intrinsic viscosity measurements provided by the resin suppliers
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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
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.