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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Rapid Molding of Thermoplastic Composites A crude bench-top setup was used to demonstrate a rapid resin transfer molding (RTM) process to make plaques roughly 25 cm wide 40 cm long and 0.5 cm thick from cyclic polybutylene terephthalate (cPBT). A 14 minute cycle was demonstrated. The cycle time included a 7 minute heating period used to increase the 150C de-molding temperature to the cure temperature of 230C in the forced hot air oven. The plaques demonstrated cure completion and molecular weight build consistent with commercial grades of PBT
This paper deals with plastic front and rear seat designs that provide more than 20% weight reduction for improved fuel efficiency and lower CO2 emissions. The materials of construction include recyclable plastics and “green” polyurethane foam making this design eco-friendly. Low cycle time reduced part count and assembly time optimized contours for passenger comfort and reduced material consumption lead to cost-competitive design.
Glass mat thermoplastic (GMT) composites have been available for many decades. Recent developments in woven-fabric reinforced GMT as well as improved computer simulations have enabled the material to be used in new applications that previously were designed solely in steel. This presentation will focus on utilizing computer simulations and best design practices in order to specify the most appropriate GMT formulation for a given application.
Multiaxial assessment methods have proved to be a useful tool in the fatigue analysis of metallic components. Fatigue analysis of composites presents additional challenges due to the anisotropy and non-homogeneity of the materials. This presentation considers how multiaxial assessment methods may be extended and applied for fatigue analysis of fibre- reinforced composite materials.
This presentation provides a state-of-the-art overview on continuous fiber reinforcement laminates and tapes as overmolded inserts for enhancing structural capability of injection molded polyamide. The talk will highlight the design and manufacturing development of the world’s first seat pan made from a thermoplastic laminate with continuous fiber reinforcement.
The potential of exfoliated graphene nanoplatelets (GnP) to increase the barrier properties of high-density polyethylene (HDPE) to oxygen and fuel was assessed. The mechanical properties (tensile flexural impact resistance) thermal stability and electro-conductivity of GnP-HDPE composites were studied as well. Those properties were related to the properties of the platelets (size aspect ratio) and the quality of their dispersion in the HDPE matrix
Continuous glass fiber-reinforced structural thermoplastic composites can be made with reactive resin systems using structural molding process such as resin transfer molding. By tailoring glass sizing chemistry composite properties can be improved significantly through maximizing the bonding between reinforcing fiber and resin matrix .
Glass carbon aramid and natural fibers of every type and consistency can be successfully handled and precisely placed in large or small molds and formed into a preform in dozens of different applications. In each application the preform is then placed into a mold for the application/ injection of a thermoset resin to complete a composite part. The production equipment required to ensure a fast cycle time and a high quality part is described along with important considerations for the equipment.
Thermosetting plastics used today are not recyclable simply because they were never designed to be in the first place. However there is nothing inherent about the design of the plastics that precludes them from being re-designed to be recyclable/reusable materials. A general overview of recyclable epoxy technology is presented including the underlying chemical principles that enable recyclable epoxy and recyclable carbon fiber composites.
New software design tools and scaleable production technology allows automated tailored fiber placement (TFP) to be used for high-volume preform production. Tailoring the fiber orientation and fiber placement/distribution within the part enables better utilization of the fiber strength and therefore improves performance of the part. Various application examples and preform designs will be presented along with resulting benefits.
This presentation focuses on fillers that could be used for lightweight sheet moulding compound (SMC) applications. In particular a focus on the density of the particles will be made as well as the ecological factor of the use of by-products from biomass. Preliminary testing has been made on the processing of local (Ontario Canada) derived agricultural by-products to see if biomass in different forms could potentially be a suitable substitute for glass bubbles in low-mass SMC formulations.
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.
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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.