Accession Number : AD0405433


Title :   DETERIORATION OF FIBROUS MATERIALS BY ULTRAVIOLET LIGHT


Descriptive Note : Annual rept. no. 3, 15 Dec 1961-15 Dec 1962


Corporate Author : SOUTHERN RESEARCH INST BIRMINGHAM AL


Personal Author(s) : Stephenson, Charles V ; Wilcox, William S ; Crenshaw, Henry T ; Hancock, Hassel L ; Dismukes, Edward B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/405433.pdf


Report Date : Feb 1963


Pagination or Media Count : 30


Abstract : This report discusses primarily the effects of ultraviolet light on the tensile properties of four polymeric materials - polyethylene terephthalate (Dacron), polybenzimidazole, a thiazole polymer, and a du Point experimental material designated as HT-1. Among these materials, exceptions were found to the al trend that degradation is more severe the shorter the wavelength of light. These exceptions are discussed in terms of an absorption of light near the surface of the material that, in effect, prevents the interior from being irradiated. Among materials studied, those that are known to contain hydrogen are more susceptible to irradiation damage in an oxygen atmosphere than in a nitrogen atmosphere or in a vacuum.


Descriptors :   *DETERIORATION , *PLASTICS , *PHOTODEGRADATION , *SYNTHETIC FIBERS , TENSILE STRENGTH , ULTRAVIOLET RADIATION , POLYMERS , DACRON , DEFORMATION , LIGHT , NITROGEN , HYDROGEN , OXYGEN


Subject Categories : Textiles


Distribution Statement : APPROVED FOR PUBLIC RELEASE