LEADER 03020nam 2200457Ia 450 001 9910711260903321 005 20180711120938.0 024 8 $aGOVPUB-C13-e3867f03f2279c337479d4f190518f84 035 $a(CKB)5470000002481411 035 $a(OCoLC)809181763 035 $a(OCoLC)995470000002481411 035 $a(EXLCZ)995470000002481411 100 $a20120905d2012 ua 0 101 0 $aeng 181 $ctxt$2rdacontent 182 $cn$2rdamedia 183 $anc$2rdacarrier 200 10$aAccelerated weathering of firefighter protective clothing $edelineating the impact of thermal, moisture, and ultraviolet light exposures /$fShonali Nazare and Rick D. Davis, Jyun-Siang Peng and Joannie Chin 210 1$aGaithersburg, MD :$cU.S. Dept. of Commerce, National Institute of Standards and Technology,$d2012. 215 $a1 online resource (30 pages) $cillustrations 225 1 $aNIST technical note ;$v1746 300 $a"CODEN: NTNUE2"--Page iii. 300 $a"June 2012." 300 $aContributed record: Metadata reviewed, not verified. Some fields updated by batch processes. 300 $aLRC Report No. 46688. 320 $aIncludes bibliographical references. 330 3 $aPreviously, the chemical and mechanical deterioration of polyaramid and polybenzimidazole-based protective clothing fabrics that resulted from concurrent thermal, moisture, and simulated sunlight exposure were quantified. This manuscript discusses the individual impacts of ultraviolet (UV) light irradiation at ambient conditions and moisture and elevated temperature in the absence of irradiation on the performance properties of outer shell (OS) fabrics used in firefighters' turnout gear. The mechanical properties which most often determine the protective performance of firefighters' turnout gear, including unidirectional stretching, tear resistance, and elastic properties, were tested before and after an accelerated weathering process. To assess and compare the protective performance of outer shell fabric samples against UV irradiation, the UV protection factor (UPF) was calculated. Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy analysis was used to elucidate the chemical changes induced by the weathering process. The data suggests that the deterioration in the physical properties of polyaramids and polybenzimidazoles are mainly due to photo-oxidative reactions, which result in chemical and mechanical deterioration of the fabrics. However, the UV exposure has a lesser detrimental effect on the UPF value. 517 $aAccelerated weathering of firefighter protective clothing 700 $aNazare?$b Shonali$01400409 702 $aChin$b Joannie 702 $aDavis$b Rick D. 702 $aPeng$b Jyun-Siang 801 0$bNFP 801 1$bNFP 801 2$bOCLCO 801 2$bNFP 801 2$bOCLCQ 906 $aBOOK 912 $a9910711260903321 996 $aAccelerated weathering of firefighter protective clothing$93525507 997 $aUNINA