VYNS film

The self-absorption values are very dependent on both the p-ray energy and source conditions, and are in the range from 1% to several tens %. In order to get reliable data with this technique, minimizing the foil- and self-absorptions is essential. The source preparation techniques are therefore of great importance. As materials for source support, a VYNS film (copolymer of vinyl chloride and vinyl acetate), whose thickness... 

In order to avoid the accumulation of electrical charges on the source mount in a An counter, the thin VYNS film thus prepared should be rendered electrically conducting by the vacuum deposition of gold or aluminum to both sides ( 15 gg/cm each side). 

If the source is covered with a thin layer such as evaporated gold or a VYNS film, the recoils will be retained. It is important to do so in order to prevent contamination of an a detector, particularly a semiconductor spectrometer operated with a vacuum between the source and the detector. 

Vyn-Eiefi>. [Syn. Prods.] Stearamide antiblocking agent for jdastic films. 

Ethylene distea-amide Lgwwax C aruitadrilier, PE film Petrac SIp-Eze Petrac Vyn-Eze arditackilier, plastisol systems Petrac V -Eze arditackilier, PS... 

Petrac vyn-Eze release agent, internal mold film... 

Adhesives for PVC pipe joints typically use the high-molecular-weight grades of PVC/VA such as Ucar VYNS-3 in very strong solvents such as cyclohexanone and tetrahydrofuran. Similar resins are used for films cast from solution, primarily for packaging applications. 

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