|
COTTON
(Spun Yarn) |
NYLON
(Multifilament) |
POLYESTER
(Multifilament) |
POLYPROPYLENE
(Multifilament) |
POLYPROPYLENE
(Monofilament) |
Breaking
Tenacity
(Gms per denier) |
3
to 5 gpd. |
5.9
to 9.5 gpd. |
6.0
to 9.5 gpd. |
2.5
to 8.0 gpd. |
3.5
to 7.0 gpd. |
Stretch
Elongation
at Break Point (%) |
3%
to 7% |
15%
to 28% |
12%
to 14% |
20%
to 100% |
14%
to 30% |
Elastic
Recovery
|
74%
at 2% |
99%
at 2% |
99%
at 2% |
98%
at 5% |
98%
at 5%
|
(%) |
45%
at 5% |
89%
at 3% |
88%
at 5% |
95%
at 10% |
Specific
Gravity |
1.54 |
1.14 |
1.38 |
0.91
(Floats) |
0.91
(Floats) |
Moisture
Absorbency |
Good
Resistance |
Excellent
Resistance |
Excellent
Resistance |
Good
Resistance |
Good
Resistance |
Abrasion
Resistance |
Good
Resistance |
Excellent
Resistance |
Excellent
Resistance |
Good
Resistance |
Good
Resistance |
Effect
of Heat |
Decomposes
302°F |
Yellows
at 300°F
Melts at 482°F |
Melts
at 482°F |
59%
Tensile at 200°F. Melts at 320°F |
50%
Tensile at 200°F. Melts at 330°F
|
Effects
of Age |
Negligible |
None |
None |
Negligible |
Negligible |
Effects
of Sunlight |
Loses
strength |
Loses
strength after prolonged exposure |
Loses
strength after prolonged exposure |
Good
resistance to indirect sunlight |
Good
resistance to UV-stabilized |
Effects
of Acids |
Disintegrates
in concentrated solutions |
Good
resistance
Dissolves in sulfuric acids |
Good
resistance
Dissolves in sulfuric acids |
Good
resistance
except with oxidizing agents |
Good
resistance
except with oxidizing agents |
Effect
of Alkalis |
Swelling,
but no damage |
Inert |
Moderate |
Good
resistance |
Good
Resistance |
Effect
of Organic Solvents |
Resistant
to common solvents |
Resistant.
Soluble in phenolic and formic acid |
Resistant.
Soluble in phenolic acid |
Insoluble
in most, except chlorinated hydrocarbons |
Insoluble
in most, except chlorinated hydrocarbons |
Resistance
to Moths |
Not
attacked |
Not
attacked |
Not
attacked |
Not
attacked |
Not
attacked |
Resistance
to Mildew |
Poor,
unless bleached |
Not
attacked |
Not
attacked |
Not
attacked |
Not
attacked |
Identification |
Melts
before burning. Burns rapidly. |
Melts
before burning. Forms hard bead. Celery odor. |
Floats.
Forms hard bead. Pungent odor. |
Melts
before burning. Burning asphalt odor. |
Floats.
Melts before burning. Burning asphalt odor. |
