Statistical Optimization of Ammonium Sulfamate and Urea-Based Fire …
111
Table 2
(continued)
Treatments*
Physical properties
Vertical flammability test
LOI %
% Loss in
tenacity
Elongation ( %)
Bending
length (cm)
Whiteness
index
(Hunter)
Fire spread time
(s)
After glow
time (sec)
Char length
(cm)
Formulation 4:
Urea 12.5
%; AS-15
%+
Arkofix NEC 50gpl
+ Ceralube HD 30gpl
30
± 2.0
4.1
5.3
54
± 4.0
4, SE
12
1.5
38.0
*
All treatments are done with 1/5 th
of MgCl
2 catalyst; BEL: Burned entire length; S.E.: Self-extinguishing
111
Table 2
(continued)
Treatments*
Physical properties
Vertical flammability test
LOI %
% Loss in
tenacity
Elongation ( %)
Bending
length (cm)
Whiteness
index
(Hunter)
Fire spread time
(s)
After glow
time (sec)
Char length
(cm)
Formulation 4:
Urea 12.5
%; AS-15
%+
Arkofix NEC 50gpl
+ Ceralube HD 30gpl
30
± 2.0
4.1
5.3
54
± 4.0
4, SE
12
1.5
38.0
*
All treatments are done with 1/5 th
of MgCl
2 catalyst; BEL: Burned entire length; S.E.: Self-extinguishing