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Polymer80, Inc. was an American manufacturer of firearms parts kits that included unfinished receivers (also known as "80 percent" receivers) used for making privately made firearms. The company was founded in 2013 by Loran Kelley Jr. and David Borges and was headquartered in Dayton, Nevada .
IEEE standard P80 is a technical standard of the Institute of Electrical and Electronics Engineers (IEEE), governing outdoor AC substations (although under special circumstances it may also be applied to indoor AC substations). [1]
Polymer morphology is a microscale property that is largely dictated by the amorphous or crystalline portions of the polymer chains and their influence on each other. Microscopy techniques are especially useful in determining these microscale properties, as the domains created by the polymer morphology are large enough to be viewed using modern ...
A printer cartridge made of PPE and polystyrene; it is an example of a product which requires good dimensional stability and accuracy to fit.. PPE blends are used for structural parts, electronics, household and automotive items that depend on high heat resistance, dimensional stability and accuracy.
The breakthrough volumes are low for very volatile substances. This problem is partly solved by graphitised poly(2,6-diphenylphenylene oxide). Although the polymer has a low affinity for water, high humidity in air may lower the breakthrough volumes of substances.
The heat deflection temperature or heat distortion temperature (HDT, HDTUL, or DTUL) is the temperature at which a polymer or plastic sample deforms under a specified load. [1] This property of a given plastic material is applied in many aspects of product design, engineering and manufacture of products using thermoplastic components.
Crystallization affects optical, mechanical, thermal and chemical properties of the polymer. The degree of crystallinity is estimated by different analytical methods and it typically ranges between 10 and 80%, with crystallized polymers often called "semi-crystalline". The properties of semi-crystalline polymers are determined not only by the ...
The Comparative Tracking Index (CTI) is used to measure the electrical breakdown (tracking) properties of an insulating material.Tracking is an electrical breakdown on the surface of an insulating material wherein an initial exposure to electrical arcing heat carbonizes the material.