Accession Number : AD0097243


Title :   A STUDY OF THE EFFECTS OF CHEMICALS ON THE PROPERTIES OF PARACHUTE FABRICS


Corporate Author : NORTH CAROLINA STATE UNIV AT RALEIGH SCHOOL OF TEXTILES


Personal Author(s) : TEMPLETON, J G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/097243.pdf


Report Date : Sep 1956


Pagination or Media Count : 218


Abstract : During routine inspection of parachutes, several badly degraded nylon parachutes were discovered. Preliminary evaluation by chemical analysis indicated the presence of mineral acids. To provide backgro%uid data,nylon and Dacron fabrics were exposed to sulfuric, hydrochloric, nitric, phosphoric, sulfurous, hydrosulfuric, and nitrous acids. The exposures were conducted under various concentrations for periods of time up to six months. The evaluation was conducted by establis!iing the breaking strength of the exposed fabrics and con%aring them to the original breaking strength. Additional phases of the work consisted of studying the effect of light in combinat%on with the acids, studying the effect of sulfur dioxide, hydrogen sulfide, and oxides of nitrogen. and examinations of procedures for detecting, by visual means, degradation by acids. Dacron was found to be quite resistant to attack by mineral acids in comparison with nylon. Acid-treated nylon was more sensitive to light than acid-treated Dacron.


Descriptors :   *DACRON , *PARACHUTE FABRICS , DEGRADATION , CHEMICALS , NYLON , NITROGEN OXIDES , CHEMICAL ANALYSIS , ACIDS , SULFUR OXIDES


Subject Categories : Textiles
      Gliders and Parachutes


Distribution Statement : APPROVED FOR PUBLIC RELEASE