Plastic reflective material

The soil used in the experiment was a low plasticity sandy material with a PI of about 11%. The variations in hydraulic conductivity probably reflected zones of material that contained more sand in some places and more clay in others. Tests have been performed on a couple of liners in the field where liquid flowing into the soil liners has been dyed and traced by cutting a cross section or trench through the liner. The result seems to indicate that dyed liquid finds a defect in the top lift, moves down and spreads along a more permeable zone between lifts finds another defect, moves downward, spreads finds another defect and so forth. 

Our second on-line radioactivity detector consisted of a plastic scintillator material (BC-400, Bicron Corp., Newbury, OH) that was machined from 1-inch-diameter rod stock into a 5/8-inch-diameter (front face) solid parabola (see Figure 2). A special rotating holder was constructed for the plastic scintillator and the curved outer surfaces were coated by vacuum deposition with a thin film of aluminum in order to reflect the emitted light toward the front face of the scintillator. A detection length of 2 mm was defined within the parabola by aluminum mounting rods (0.250 inch outer diameter) that were press-fit (coaxial to the separation capillary) in the sides of the scintillator, as illustrated in Figure 2. 

The support function is usually a layer of material that serves as the foundation of the dry reagent element. It consists of a transparent, thin, rigid plastic or plastic-like material. The support layer may also be opaque and contain the reflective function. 

Metal or carbon particles in plastic reflect and absorb electromagnetic radiation. When dimensioning a shielding material, the absorption of non-refiected radiation must be made sufficient. An electromagnetic wave is absorbed according to the following correlation [13] ... 

The development of plastics reflects economic history. Restrictions on imported rubber latex, wool, sUk and other natural materials to Europe during World War II stimulated the development of synthetic alternatives. Between 1935 and 1945, many new polymers were introduced including polyethylene, polyamides, poly (methyl methacrylate), polyurethanes, poly (vinyl chloride). 

PRM Polymer reflective material PC/acrylic multilayer metallic-like sheets Dow Plastics... 

Thirty-two critical experiments were performed. Arrays of cans, each containing 15.2 kg of uranium oxide, were assembled with and without methyl methacrylate plastic moderator material placed between the cans. A 5 X S X S array of uranium oxide cans was u vdien no plastic moderator material was placed between cans. Since this S X 5 X S array alrme is not critical, n fidly reflected, high-enriched ( 93% U) uranium drivers were used to adiieve criticality. 

Figure 5.372 shows the accumulation-time profiles for various bacteria on various plastics, reflecting the influence of materials structure and bacteria type. Adhesion equilibrium is achieved within 24 hours. As the temperature increases, the rate... 

Crash-simulation in general is performed with explicit solvers like LS-Dyna, Abaqus/Explicit or PamCrash to include mass inertia into simulation. For thermoplastics it has to be based on an exhaustive, plastics oriented material description that includes elastic and plastic deformation as well as failure. The most important influencing factors on the mechanical material behavior of non-reinforced thermoplastics under high deformation speeds are the strain-rate dependency and the non-linear behavior during plastic deformation. A failure criterion has to be applied in order to reflect the amount of energy the material can absorb through deformation until it fails. 

---