ChemStat 919
Flame-Retardent Fabric (NASA)
At Cape Canaveral, static electricity is an extreme hazard because of the volatile fuels present, and because of the highly sensitive electronics placed aboard Space Shuttles. For this specific application, Stern+Stern developed ChemStat 919 to be inherently flame retardant, static dissipative, and cleanroom compatible. It was through the development of ChemStat 919 that the effectiveness of the now-patented conductive grid was discovered with NASA.
ChemStat 919 is composed of 100% multifilament Nomex® fiber, an inherently flame retardant non-oxidant. Its patented* conductive grid is similar in design and performance to that of the ChemStat 900 Plus Series.
Not only is ChemStat 919 exclusively specified by NASA for its refueling and reloading operations, but it is also the only inherently flame retardant cleanroom fabric available for those commercial facilities concerned about explosive or high heat environments.
Variations on the ChemStat 919 design are approved by NASA for the International Space Station and for Arc Flash Protection in accordance with OSHA regulation 1910.269 and NFPA 70E.
*US Patent #4,606,968
Technical Data
Construction 2/2 twill, 1/4 in (6.5 mm) grid Weight (ASTM D 3776) 5 oz/yd2 (170 g/m) Yarn Content, by weight 100% multifilament Nomex® fiber <1% carbon Voltage Decay (Fed Std 101C Method 4046 0.15 secs Surface Resistivity (AATCC 76) 109 ohm/sq NASA Triboelectric Voltage Decay 250V @ 0.35 secs, 100V @ 5 secs Flame Retardance (NASA NHB 8060.1B) Class 1 Permeability (ASTM D 737) 10 cfm (30 L/dm2/min) Fabric Cooling Rate
(ASTM E 96 Method B, upright)High: 14.42 g/m2/hr Chemical Compatibility
.....salts and alkalis
.....organic acids and chemicals
.....jet fuel
.....mineral acids
excellent
excellent
excellent
goodLaundry Compatibility DI water, perchlorethylene, Freon TF Sterilization Compatibility steam autoclave, gamma radiation (250 Mrad) Durability (ASTM D 4157) 15,000 cycles no noticeable wear Optical Rating (ASTM E 284) opaque
® Nomex is a registered trademark of E. I. du Pont de Nemours Company and is used under license by Stern & Stern Industries Inc.
