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Polymer
built 632 days ago
Polymer thermoforming and blow molding is an application of growing importance to POLYFLOW users. Beyond the need to simulate the forming process itself, the industry now is demanding tools to calculate deformation and stress after cooling. POLYFLOW 3.11 software offers two new options. First, it creates a 3-D geometry out of the deformed shell and the calculated thickness that then can be used for advanced shrinkage and warpage simulation with structural codes. Second, it allows the user to conduct some simple thermo-
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Polymer is an explosive rock band from Philadelphia that has developed a reputation for having one of the most energetic stage shows around. Polymer’s music is original rock, highlighted by their catchy songwriting, elaborate instrumentation and four part vocals. The band members are: guitarists, Jon Aldinger and Matt Fonda, drummer, Candice Harris, bassist, Dan La Porta, and vocalist, Ben Weldon.
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Polymeric materials remember any action that distorts or moves polymer chains or segments (such as bending, stretching, and melting). Size ... accounts for an accumulation of the interchain and intrachain secondary attractive forces called van der Waals forces. For nonpolar polymers, such as polyethylene, the attractive forces for each repeating unit are less than that for polar polymers. Polyvinyl chloride, a polar polymer, has attractive forces that include both dispersion and dipole-dipole forces so that the total attractive forces are proportionally larger than those for polyethylene. Polymers with hydrogen bonding (such as proteins, polysaccharides, nucleic acids, and nylons) have attractive forces that are even greater. Hydrogen bonding is so strong in cellulose that cellulose is not soluble in water until the inter- and intrachain hydrogen bonds are broken.
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With 18 locations in 9 countries, ICO Polymers produces custom polymer powders for rotational molding and other polymers segments, including textiles, metal coatings and masterbatch. ICO remains an industry leader in size reduction, compounding and other tolling services for plastic and non- plastic materials. ICO's Bayshore Industrial subsidiary produces specialty compounds, concentrates and additives primarily for the plastic film industry.
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Polymer composites were first developed during the 1940’s, for military and aerospace applications. Considerable advances have been made since then in the use of this material and applications developed in the construction sector. Load bearing and infill panels have been manufactured using composites. Complete structures have been fabricated where units manufactured from glass-reinforced polyester are connected together to form the complete system in which the shape provides the rigidity. Glass-reinforced plastics have been used in many other applications including pressure pipes, tank liners, and roofs.
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Scientists from the Pacific Northwest National Laboratory (PNNL) have developed a technique to force a variety of enzymes to self-assemble layer-by-layer on carbon nanotubes (CNTs) with the help of noodle-like polymer molecules. Tags: carbon nanotube, nanotube, polymer Blog posts 2006-04-30
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