|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.69 [2010] >
JSIR Vol.69(11) [November 2010] >
| Title: | Thermal ageing studies of bromo-butyl rubber used in NBC personal protective equipment |
| Authors: | Kannan, G K
Gaikewad, L V
Nirmala, L
Kumar, N S |
| Keywords: | Bromo-butyl rubber (BBR)
NBC equipment
Thermal ageing
Thermal oxidation |
| Issue Date: | Nov-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This
study evaluates degradation and stability of bromo-butyl rubber (BBR) used in
NBC personal protective equipment. Elongation increased by 10% when BBR was
exposed to -65°C as well as 100°C. Tensile strength decreased by 50% when
exposed to -65°C and also at 55°C, and decreased to around 63% when exposed to 80°
and 100°C. Morphological appearance at 80°C aged sample was intact and
comparable with unaged samples. BBR exposed to 120°C developed minor cracks (<0.01
µm). Life prediction was 89 and 25 years for exposed usage temperature of 40°
and 50°C respectively. Since survival of personnel who don these equipments is
involved the shelf life for equipments made of this particular formulation
shall be safely considered at 50% of predicted life for respective temperatures. |
| Page(s): | 841-849 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.69(11) [November 2010]
|
|
