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National Plastics Exhibition

National Plastics Center Museum National Plastics Exhibition (SPI) natural rubber (polyisoprene)... [Pg.1099]

Extruder manufacturer Davis-Standard introduced a similar double-flighted barrier screw at the 2000 National Plastics Exhibition in Chicago, Illinois. The characteristics of the DEM screw are included in Table 8.1. [Pg.583]

Vehicles that exhibit the unusual property of Bingham-type plastic rheological flow are characterized by the need to overcome a finite yield stress before flow is initiated. Permanent suspension of most pharmaceutical systems requires yield-stress values of at least 2-5 Pa (20-50 dyn/cm ). Bingham plastic flow is rarely produced by pharmaceutical gums and hydrophilic colloids. National Formulary (NF) carbomers exhibit a sufficiently high yield value at low solution concentration and low viscosity to produce permanent suspensions. The carbomers, however, require a pH value between 6 and 8 for maximum suspension performance. The polymer is essentially incompatible... [Pg.3604]

A survey of plastics-containing objects in the British Museum and the National Museum of Denmark showed that 1% of objects were actively deteriorating and were in immediate need of conservation, while 12% exhibited deterioration and required cleaning, stabilising and repair. All the acute objects contained cellulose nitrate, cellulose acetate, plasticised PVC or polyurethane foam. Most objects (60%) were defined as being of low conservation priority, that is, they were in a stable condition but needed some treatment such as cleaning. Only just over one quarter required no conservation treatment. In general, deterioration of plastic objects in museums is visible within 5-25 years of collection. [Pg.199]

CIBA had developed Cibanoid urea-formaldehyde, Cibanit aniline-formaldehyde, and melamine-formaldehyde resins. See Hans Stager, Modern organic materials at the Swiss National Exhibition Zurich, 1939, British Plastics and Moulded Products Trader, 11 (1939), 254-257. [Pg.182]

These specifications and standards may be general industry-wide, or they may be specific to one industry, such as the spacebome industry, wherein plastics and composites must exhibit special stability in the harsh environments of temperature and vacuum. Specifications and standards for this industry, for instance, would be controlled by documents from the National Aeronautics and Space Administration (NASA). [Pg.823]

TF batteries were first designed and developed by the Oak Ridge National Laboratory (ORNL). TF batteries can be fabricated by direct deposition onto thin plastic sheet or chips. Unlike conventional batteries, TF batteries offer maximum bending capability when fabricated on a thin plastic and can be shaped into whatever form-factor needed by a particular application. These TF batteries also scale nicely in terms of size and geometric shape. Operational tests conducted by various users reveal that these batteries exhibit no deterioration in performance when operated over a wide temperature range from -30°C and +140°C. Furthermore, the battery performance remains unaffected by a heating temperature of 280°C under automated solder-refiow. [Pg.36]

Among the various lead-free solder alloys, the National Electronics Manufacturing Initiative (NEMI) recommends Sn-3.9Ag-0.6Cu ( 0.2%) for reflow soldering (Ref 1), while JEITA (Japan Electronics and Information Technology Industries Association) recommends Sn-3.0Ag-0.5Cu. Under most typical use conditions, Sn-Ag-Cu (SAC) alloy in general exhibits a greater resistance to creep as compared to Pb-Sn alloy and hence creeps 10 to 100 times slower (Ref 2). The microstructure, the plastic and creep behavior, and the failure mechanism in Sn-Ag-Cu solder are vastly different compared to Pb-Sn solder, and therefore, it is important to develop appropriate thermomechanical predictive models for Sn-Ag-Cu solder. [Pg.181]


See other pages where National Plastics Exhibition is mentioned: [Pg.653]    [Pg.604]    [Pg.486]    [Pg.653]    [Pg.604]    [Pg.486]    [Pg.742]    [Pg.763]    [Pg.495]    [Pg.124]    [Pg.1191]    [Pg.325]    [Pg.131]   


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