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An aryloxy-substituted polymer has also been developed as a fire resistant expanded foam for thermal and sound insulation. The patent literature contains many references to cyclomatrix polymers derived from cyclic trimeric phosphazenes incorporated into cross-linked resins for fire resistant circuit boards and related applications.
Stratasys was founded in 1989, by S. Scott Crump and his wife Lisa Crump in Eden Prairie, Minnesota.The idea for the technology came to Crump in 1988 when he decided to make a toy frog for his young daughter using a glue gun loaded with a mixture of polyethylene and candle wax.
SU-8 molecule. SU-8 is a commonly used epoxy-based negative photoresist.Negative refers to a photoresist whereby the parts exposed to UV become cross-linked, while the remainder of the film remains soluble and can be washed away during development.
Solid Polymer Electrolytes, which are made by connecting or depositing electrodes (usually noble metal) to both sides of the membrane, conduct the electrons through an energy requiring process and rejoin the hydrogen ions to react with oxygen and produce water. [3] Fuel cells are expected to find strong use in the transportation industry.
denotes the surface energy of the solid–liquid, liquid–gas, or solid–gas interface θ c {\displaystyle {{\boldsymbol {\theta }}_{c}}} is the measured contact angle A series of solutions with known surface tension (e.g., Dyne solutions) can be used to estimate the surface energy of the polymer substrate qualitatively by observing the ...
Solid ground curing (SGC) is a photo-polymer-based additive manufacturing (or 3D printing) [1] technology used for producing models, prototypes, patterns, and production parts, in which the production of the layer geometry is carried out by means of a high-powered UV lamp through a mask.
[102] When implemented on 1 October, following the approval of and adoption by New Hampshire's Joint Legislative Committee on Administrative Rules (JLCAR) on 18 July, New Hampshire will be able to "compel polluters to clean up contaminated sites." [101] One of the contaminated sites is the "Coakley landfill in North Hampton and Greenland." [101]
Polybenzimidazole (PBI, short for poly[2,2’-(m-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high decomposition temperature. It does not exhibit a melting point, it has exceptional thermal and chemical stability, and it does not readily ignite. [1]