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Solvay CYCOM® 985 Epoxy + Carbon Uni-Tape Laminate
Categories: Polymer; Thermoset; Carbon Fiber/Thermoset Composite; Epoxy; Epoxy/Carbon Fiber Composite

Material Notes: CYCOM® 985 is a 350°F (177°C) curing epoxy resin system. CYCOM 985 is designed for use where a balance of performance and processing characteristics is required. It has excellent structural performance and good impact resistance. CYCOM 985 is co-curable with structural adhesives and will produce outstanding thin-skinned sandwich structures. CYCOM 985 allows thick section construction without exotherm problems. Optimum properties are achieved by curing under autoclave pressure from 45 to 100 psi (as appropriate to panel configuration) at 350°F (177°C) for two hours. CYCOM 985 prepregs have good tack and drape and an out-time of two weeks at room temperature.

Features & Benefits:

  • Modified epoxy system
  • Excellent hot/wet strength retention
  • 350°F (177°C) cure
  • Good impact resistance
  • 300°F (149°C) service temperature
  • Controlled flow
  • Ease of processing
  • Good tack and drape
  • 14 day shop life
  • Shelf life of 6 months at 0°F (-18°C)
Applications: Primary and secondary aircraft structures

Mechanical property data for 985 epoxy with 8 ply laminate with 56% fiber volume Carbon Uni-Tape 145 gsm

Information provided by Cytec, subsequently acquired by Solvay.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.54 g/cc1.54 g/cc
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 1980 MPa287200 psi
 33.8 MPa
@Temperature 132 °C
4900 psi
@Temperature 270 °F
90°, 20 ply
 36.5 MPa
@Temperature 71.0 °C
5300 psi
@Temperature 160 °F
90°, 20 ply
 40.0 MPa
@Temperature 24.0 °C
5800 psi
@Temperature 75.2 °F
90°, 20 ply
 42.1 MPa
@Temperature -54.0 °C
6100 psi
@Temperature -65.2 °F
90°, 20 ply
Tensile Modulus  6.20 GPa
@Temperature 132 °C
899 ksi
@Temperature 270 °F
90°, 20 ply
 6.90 GPa
@Temperature 71.0 °C
1000 ksi
@Temperature 160 °F
90°, 20 ply
 8.30 GPa
@Temperature 24.0 °C
1200 ksi
@Temperature 75.2 °F
90°, 20 ply
 9.70 GPa
@Temperature -54.0 °C
1410 ksi
@Temperature -65.2 °F
90°, 20 ply
 121 GPa
@Temperature -54.0 °C
17500 ksi
@Temperature -65.2 °F
 128 GPa
@Temperature 24.0 °C
18600 ksi
@Temperature 75.2 °F
 129 GPa
@Temperature 71.0 °C
18700 ksi
@Temperature 160 °F
 133 GPa
@Temperature 132 °C
19300 ksi
@Temperature 270 °F
Compressive Strength  1172 MPa
@Temperature 71.0 °C
170000 psi
@Temperature 160 °F
 1207 MPa
@Temperature 24.0 °C
175100 psi
@Temperature 75.2 °F
Wet
 1241 MPa
@Temperature 24.0 °C
180000 psi
@Temperature 75.2 °F
 1275 MPa
@Temperature -54.0 °C
184900 psi
@Temperature -65.2 °F
Compressive Modulus  121 GPa
@Temperature 132 °C
17500 ksi
@Temperature 270 °F
 123 GPa
@Temperature 71.0 °C
17800 ksi
@Temperature 160 °F
 124 GPa
@Temperature -54.0 °C
18000 ksi
@Temperature -65.2 °F
 124 GPa
@Temperature 24.0 °C
18000 ksi
@Temperature 75.2 °F
Shear Strength  43.4 MPa
@Temperature 132 °C
6300 psi
@Temperature 270 °F
Short Beam, wet
 60.7 MPa
@Temperature 132 °C
8800 psi
@Temperature 270 °F
Short Beam
 62.1 MPa
@Temperature 71.0 °C
9000 psi
@Temperature 160 °F
Short Beam, wet
 75.2 MPa
@Temperature 24.0 °C
10900 psi
@Temperature 75.2 °F
Short Beam, wet
 79.3 MPa
@Temperature 71.0 °C
11500 psi
@Temperature 160 °F
Short Beam
 117 MPa
@Temperature 24.0 °C
17000 psi
@Temperature 75.2 °F
Short Beam
 120 MPa
@Temperature -54.0 °C
17400 psi
@Temperature -65.2 °F
Short Beam
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 149 °C300 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 177 °C
@Time 7200 sec
350 °F
@Time 2.00 hour
Cure
Shelf Life 6.00 Month
@Temperature -17.8 °C
6.00 Month
@Temperature 0.000 °F

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PCYTED092b / 234740

Specialty Compounds RTP Company

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