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Dr. Daniel W. Fox and LEXAN polycarbonate Dr. Daniel W. Fox (May 14, 1927 – February 15, 1989) was an American polymer chemist who is often regarded as the father of LEXAN . LEXAN is the flagship product of SABIC Innovative Plastics (formerly GE Plastics ) and is used in everything from CDs and DVDs to car bumpers.
Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.
A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms. That is, they are the conjugate bases of polycarbonic acids , the conceptual anhydrides of carbonic acid , or polymers of carbon dioxide .
The currently most-consumed engineering plastic is acrylonitrile butadiene styrene (ABS), used for e.g. car bumpers, dashboard trim and Lego bricks. Engineering plastics have gradually replaced traditional engineering materials such as metal, glass or ceramics in many applications.
General specification, parameters, methods of measurements; GOST R 51555-99: Toys. General safety requirements and methods of tests. Mechanical and physical properties; GOST R 52888-2007: Social services of the population. Social services to children; GOST R 52630-2012: Steel welded vessels and apparatus. General specifications
The Long Duration Exposure Facility was used to test various materials in vacuum.. Materials for use in vacuum are materials that show very low rates of outgassing in vacuum and, where applicable, are tolerant to bake-out temperatures.
LEBC2, the Lexan bubble chamber, which had a diameter of 20 cm and was made of transparent plastic. The construction of the LExan Bubble Chamber, LEBC, was approved by the CERN Research Board on 16 November 1978. [1] Bubble chambers are similar to cloud chambers, both in application and in basic principle.
A summary of every test performed on the part. This summary is usually on a form of DVP&R (Design Verification Plan and Report), which lists each individual test, when it was performed, the specification, results and the assessment pass / fail. If there is an Engineering Specification, usually it is noted on the print.