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Physical and
Mechanical Properties
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PROPERTIES1
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METHOD OR
CONDITIONS
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PARYLENE C
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EPOXIES2
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SILICONES2
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URETHANES2
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Secant
modulus, psi |
ASTM D882-56T
@ 1% strain |
400,000 |
350,000 |
900 |
1,000-10,000 |
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Tensile
strength, psi |
ASTM D882-56T
@ 10% strain/min |
10,000 |
4,000-13,000 |
800-1000 |
175-10,000 |
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Yield
strength, psi |
ASTM D882-56T
@ 10% strain/min |
8,000 |
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Elongation
to break, % |
ASTM D882-56T
@ 10% strain/min |
200 |
3-6 |
100 |
100-1,000 |
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Yield
elongation, % |
ASTM D882-56T
@ 10% strain/min |
2.9 |
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Density,
gm/cc |
ASTM
D1505-57T |
1.289 |
1.11-1.40 |
1.05-1.23 |
1.10-2.5 |
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Index of
refraction, N 23 |
Abbe
refractometer |
1.639 |
1.55-1.61 |
1.43 |
1.50-1.60 |
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Water
absorption, 24 hrs |
ASTM D570-57T |
0.06 |
0.08-0.15 |
12 (7 days) |
0.02-1.5 |
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Rockwell
hardness |
ASTM D785-65 |
R80 |
M80-M110 |
40-45 (shore A) |
10A-230 (shore) |
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Coefficient of friction: |
ASTM D1894-63 |
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 Static |
0.29 |
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Dynamic |
0.29 |
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1.Properties
measured on parylene films, 0.001-.0003 inch thick, except where
specified.
2.Properties
depend somewhat on deposition conditions.
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