Technical Data Sheet
Tenite™ Propionate 358A4000018 Clear Trsp
Applications
Eyewear
Product Description
Tenite™ cellulosic plastics are noted for their excellent balance of properties - toughness, hardness, strength, surface gloss, clarity, and a warm feel. The mechanical properties of Tenite™ cellulosic plastics differ with plasticizer levels. Lower plasticizer content yields a harder surface, higher heat resistance, greater rigidity, higher tensile strength, and better dimensional stability. Higher plasticizer content increases impact strength. Tenite™ cellulosic plastics are available in natural, clear, selected ambers or smoke transparents and black translucent. Color concentrates are available in let-down ratios from 10:1 to 40:1. Tenite™ Cellulose Acetate Propionate 358-18 has a plasticizer level of 18%.
Typical Properties
Property
a
Test Method
b
Typical Value, Units
c
General
Plasticizer
18 %
Specific Gravity
D 792
1.19
Mechanical Properties
Tensile Stress @ Yield
D 638
22.1 MPa (3200 psi)
Tensile Stress @ Break
D 638
27.6 MPa (4000 psi)
Elongation @ Break
D 638
35 %
Flexural Modulus
D 790
1172 MPa (1.70 x 10
5
psi)
Flexural Yield Strength
D 790
29.0 MPa (4200 psi)
Rockwell Hardness, R Scale
D 785
55
Izod Impact Strength, Notched
@ 23°C (73°F)
D 256
523 J/m (9.8 ft·lbf/in.)
@ -40°C (-40°F)
D 256
107 J/m (2.0 ft·lbf/in.)
Miscellaneous Propionate Properties
Refractive Index, n
D
D 542
1.46-1.49
Light Transmission
e
E 308
>90 %
Haze
e
D 1003
<8.5 %
Specific Heat
@ 23°C (73°F)
DSC
1.26-1.67 kJ/kg·K (0.301-0.399 Btu/lb·°F)
Thermal Conductivity
C 177
0.17-0.33 W/m·K (1.2-2.3 Btu·in./h·ft
2
·°F)
Coefficient of Linear Thermal Expansion
D 696
11-17 x 10
-5
/°C (mm/mm·°C) (6-9 x 10
-5
/°F (in./in.·°F))
Mold Shrinkage
D 955
0.2-0.6 %
Dielectric Strength
D 149
11.8-18.7 kV/mm (300-475 V/mil)
Dielectric Constant
1 MHz
D 150
3.3-3.8
Dissipation Factor
1 MHz
D 150
0.01-0.15
Volume Resistivity
D 257
10
13
-10
15
ohm·cm
Permanence Properties
Water Absorption, 24 h immersion
D 570
1.4 %
Soluble Matter Loss
D 570
0.1 %
Weight Loss on Heating
[72 hours @ 80°C (176°F)]
D 1562
1.0 %
Thermal Properties
Deflection Temperature
d
@ 0.455 MPa (66 psi)
D 648
77 °C (171 °F)
@ 1.82 MPa (264 psi)
D 648
67 °C (153 °F)
Vicat Softening Temperature
d
D 1525
87 °C (189 °F)
a
Unless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
b
Unless noted otherwise, the test method is ASTM.
c
Units are in SI or US customary units.
d
Conditioned 4 hours @ 70°C (158°F)
e
1.52-mm (0.06-in.) thickness
Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.
Characteristics
Formula 358 - base
Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.
2/28/2018 11:35:39 AM