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  • In-Line Dispersing Grinder Doubles Rate of Dissolution of Rubber in Styrene
    By using an in-line dispersing grinder to promote dissolution of polybutadiene rubber in styrene at the Hanging Rock Plant of Dow Chemical USA, total time needed for dissolution has been cut by better than 50%. Previously, with just a turbine agitator in the dissolution tank having a volume
  • Troubleshooting O-Ring Failures
    Like any device subjected to errors in installation or exposure to high stresses, O-rings too are liable to failure. Different materials of O-rings have different shelf lives. Shelf life for materials like natural rubber, polybutadiene and polyurethane (millable) usually have a shelf life of five
  • Out of the Lab and Onto the Links
    the polybutadiene core. The large, solid core provides distance, while the solid-lattice structure consistently
  • Polystyrene
    in the process are usually below 50 psi, allowing the use of relatively low-cost aluminum tooling. Unmodified polystyrene is rigid and brittle, has moderate strength, and is crystal clear. Impact strength is increased significantly by blending the polymer with rubbers such as polybutadiene. Heat
  • A bright idea for the operating room
    , designers wanted to reduce costs by consolidating parts via metal-to-plastic conversion. "The switch to plastic would give us more flexibility for future versions of the lamp," Nieminen says. The company chose a 30% glass-fiber-reinforced blend of polybutadiene terephthalate (PBT) and polyethylene
  • Oil-Resistant Rubbers
    These rubbers include grades suitable for service at temperatures to 250 C and having maximum resistance to oils and greases. Some are considered specialty materials and are quite expensive. (CR; BC, BE): Except for polybutadiene and polyisoprene, neoprene is perhaps the most rubberlike of all
  • Medical Device Link . Chlorine-Free Blends for Flexible Medical Tubing
    available on the market. Tubing made by one device company, for instance, employs a polybutadiene-based material that is translucent and kinks easily. Another tubing made by a different company features a three-layer construction, with the outer layer consisting of plasticized PVC and the inner layer

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