polyurethan

Definitions

  • WordNet 3.6
    • n polyurethan any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
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Usage


In news:

A polyurethane coating Trailer Talk blog by Tom Berg, Senior Editor.
As many as a third of the 600 or so polyurethane gymnasium floors in Ohio schools.
The benefits of polyurethane 's longer life and resistance to tearing under torque are also important advantages.
Amerityre Corporation, Boulder City, Nevada, has developed a revolutionary new tire design that uses polyurethane instead of rubber.
The company says that polyurethane tires are safer, less expensive to manufacture and 100 percent recyclable.
Reticulated Polyurethane Foam For Medical Devices.
Use polyurethane only to join components that will NEVER need to be disassembled.
The number one reason people abandon shellac is they expect it to behave like polyurethane.
Simon Pengelly's Dim Sum rocker with metal frame, polyurethane foam fill, and walnut skids by Montis, 31-162-377-777.
Durable Styling with Film-forming Polyurethane.
BASF targets price increase for Europe polyurethane products.
This thin heat transfer film looks like and cuts as easily as every other polyurethane film.
Adenna Inc has expanded its Purity polyurethane exam glove line with the addition of Purity -XP.
Peter T has spotted this interesting news that railroad builders are turning increasingly to polyurethane (PU) sleepers or ties, because they have "better dimensional and weather stability than wood and are lighter than concrete".
Area polyurethane seating in Designtex's Powdered Sugar by Dar/ Ran Furniture Industries, 800-334-2402.
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In science:

The insulator used is a polyurethane resin1 developed to withstand temperatures as low as 77 K without loosing its insulating properties (25 kV/cm).
A prototype liquid Argon Time Projection Chamber for the study of UV laser multi-photonic ionization
They arrived as 12-cm wide by 17.5-cm long “ribbons.” Each ribbon came as a self-contained structure with the individual 0.5-mm fibers held adjacent by a coating of a polyurethane-acrylic blend cement.
A Tungsten / Scintillating Fiber Electromagnetic Calorimeter Prototype for a High-Rate Muon g-2 Experiment
The detector is contained within a polyurethane-lined cavity 22 meters in diameter by 34 meters high, filled with ultra-pure light water.
Astrophysical Neutrino Telescopes
First of all, a selection of an aluminum core surrounded by a layer of polyurethane was made.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Aluminum is a good heat conductor and is easy to work with in the laboratory; polyurethane is a good insulator and is also convenient to handle, as it can be foamed to any desired shape from canned liquid.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Density, specific heat and thermal conductivity of aluminium and polyurethane.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Amplitude damping factor on the interface between aluminium and polyurethane at 1 mHz, for various sizes of the insulating device.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Because the polyurethane provides a very stable insulation, we can neglect the lateral flux, hence only a unidimensional heat flow needs to be considered.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Rwire its transverse radius, and ℓwire its length inside the polyurethane layer.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Hwire (ω )| ≃ and where the approximation has been made that the temperature fluctuations at the inner end of the wire are much smaller than those at the outer end, due to the presence of the polyurethane layer.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
The length of the wires has been taken to be 25 cm, but this does not necessarily mean we need a2 = 38 cm (assuming the radius of the aluminum core is a1 = 13 cm), because the wires can be partly wound inside the polyurethane layer to further protect the system against leakage.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
The choice of materials is flexible, so aluminium and polyurethane, which are easily available in the market, has been adopted.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Our analysis determines that a central aluminium core of 13 cm of radius, surrounded by a concentric layer of polyurethane 15–20 cm thick, comfortably provides the needed thermal screening which guarantees a meaningful test of the sensors’ performance.
Theoretical foundations for on-ground tests of LISA PathFinder thermal diagnostics
Meeker and Escobar (1998, Section 19.3) reanalyzed ALT data from a special type of mylar-polyurethane insulation used in highperformance electromagnets.
A Review of Accelerated Test Models
These defects have amplitudes of the order of 0.1 mm on the polyurethane spincast surface of our container.
Optical Tests of a 2.5-m diameter Liquid Mirror: Behavior under External Perturbations and Scattered Light Measurements
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