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As 2015 comes to a close, SPE would like to wish its members, partners and other industry professionals a safe and happy holiday season. As we reflect on the past year for the industry, we would like to provide the readers of Industry Update a look at the most accessed articles from the year. Part 2 of the list of most accessed articles of 2015 will appear in the Wednesday, Dec. 30 issue of Industry Update.
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Phys.org
From July 22: A new paper by a team of researchers that includes Haifeng Gao, an assistant professor of chemistry and biochemistry at the University of Notre Dame, presents, for the first time, a one-pot, one-batch synthesis of hyperbranched polymers with tunablemolecular weights, uniform size and high degree of branching using an efficient click polymerization technique.
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Oil & Gas 360
From May 20: The shale gas revolution is bringing plastic manufacturing back to the United States and making U.S. refiners more competitive globally, reports the American Chemistry Council. Due largely to plentiful and affordable natural gas and natural gas liquids from shale formations, U.S. jobs related to plastics manufacturing are expected to grow by 462,000 over the next decade – more than 20 percent – reaching more than 2.7 million.
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Plastics Engineering
From Aug 19: The fall in energy values during the first quarter of 2015 led to steep declines in petrochemical costs. With declining feedstock costs, polymer prices came under pressure. Polycarbonate, however, has maintained its price levels despite a significant drop in the polymer’s production cost. How is this possible?
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Canadian Plastics
From Nov. 24: In what might be the best military news since the United States Navy SEALS tracked down bin Laden, soldiers wounded by gunshots and improvised explosive devices may soon be treated with a polymer-based medical device that can literally save limbs by promoting new bone growth. The research is being led by Matthew Becker, a professor of polymer science at the University of Akron in Ohio, and involves using a cylinder-shaped polymeric shell to stabilize the site of injury while the missing bone regenerates.
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SPE Plastics Research Online
From July 8: Injection molding is one of the most commonly used techniques for mass production in plastic processing industries. Using these techniques to produce thin plastic parts that do not warp, however, is challenging. Plastic components may warp for several different — and complicated — reasons. This warpage, however, is primarily caused by variations in the level of shrinkage that occurs during the injection process of the plastic manufacture.
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SPE Plastics Research Online
From June 24: It can be challenging to achieve tightly constrained tolerances on the dimensions of injection-molded parts. Manufacturers are often required to operate cost-effectively and quickly. As such, it is not always possible for the injected materials to reach a fully equilibrated state during molding. In addition, there can be a delay in receiving metrological information, which is used to adjust molding parameters.
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SPE Plastics Research Online
From March 11: Today, due to the continual emergence of new and sophisticated products, profile extrusion faces new challenges that are motivating the adoption of innovative design methods. The major problem in designing a profile extrusion die (typically used, for example, in manufacturing decking, medical catheters, and electronics) is how to achieve an even flow distribution owing to the complex rheology of the materials employed and the intricate, sometimes counterintuitive flow phenomena occurring inside the flow channels.
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Wired
From July 15: If you've ever played with a competing brand of "interlocking plastic bricks," you know that Lego's big advantage is their solidity, their seemingly infinitesimal tolerances that make sure every piece fits just so with every other. The seams turn invisible. The secret to that tight connection (and how painful Legos are to step on): Plastic.
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Think there's nothing new in twin screw extruder technology?
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MECO’s OFS Type-1, fully-split shaft seal for vacuum, low pressure, and abrasive applications. For rotating equipment in, plastics, petrochemical, metals, minerals and other process industries.
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SPE Plastics Research Online
From July 15: Due to the introduction of wood fibers, wood-plastic composites (WPCs) are hygroscopic in nature (i.e., they attract and absorb water). This absorption of moisture, which occurs in wet environments and/or under high humidity, leads to dimensional instability, microcracks, degradation, mass loss, susceptibility to bio-deterioration, and significant reduction in the mechanical stiffness and strength of WPCs. To enhance the market appeal of plastic products, the addition of pigments is a common practice.
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SPE Plastics Research Online
From Aug. 19: Graphite nanoplates (GnPs) are exfoliated graphite particles in the form of thin flakes — with large surface areas and nanosized thicknesses — that tend to agglomerate because of van der Waals interactions. GnPs are commonly used to reinforce composite materials. It is expected that maximum composite performance levels should occur when GnP agglomerates are dispersed within the polymer matrix as primary 2-D particles and they have good interfacial adhesion.
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