All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. The Thermoset Resins Division’s technical
sales representatives will assist in developing procedures to fit individual requirements.
INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 2/12
SIL65AA-895RPW is an unsaturated polyester laminating resin used in the manufacture of fiberglass-reinforced products.
SIL65AA-895RPW in tinted with a blue indicator for color change with addition of initiator.
FEATURES BENEFITS
Excellent Wetting of Glass Fibers High strength properties in laminates
Moderate Gel Time Enables good line speeds
Low Laminate Exotherm Even cure throughout laminate
Moderate Hardness Development Good cycle times and dimensional stability
RELATED PRODUCTS GEL TIME
SIL65AA-895RP 28-32 Minutes
LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model RV #2 Spindle @ 20 rpm, 77 F (25 C), cps 400-600
Thixotropic Index 2.75-3.5
100 grams resin @ 77 F (25 C), initiated with 1.0% MEKP-9 by weight *
Gel Time, min:sec 18:00-22:00
Gel to Peak Exotherm Time, min:sec 9:00-17:00
Peak Exotherm 285-325 F (141-163 C)
Non-Volatile Content, % 55.5-58.5
Specific Gravity 1.02-1.14
TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting 1/8 inch (3.2 mm) Laminate
Construction Not Applicable 4 Plies 1.5 oz/ft
2
, 33% Glass Mat
Flexural Strength, ASTM D790 16,200 psi 112 MPa 27,700 psi 191 MPa
Flexural Modulus, ASTM D790 5.79 x 10
5
psi 3,990 MPa 12.3 x 10
5
psi 8,510 MPa
Tensile Strength, ASTM D638 9,500 psi 66 MPa 17,800 psi 123 MPa
Tensile Modulus, ASTM D638 5.90 x 10
5
psi 4,070 MPa 13.1 x 10
5
psi 9,007 MPa
Tensile Elongation, ASTM D638 1.8 % 1.8 % 1.8 % 1.8 %
Barcol Hardness, 934-1 gauge, ASTM D2583 42-46 42-46 48-52 48-52
Heat Distortion Temperature, ASTM D648 151 F 66 C — F — C
* The gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (catalyst), shop temperature, humidity, and type of fillers used. In order to
meet your individual needs consult our technical sales representative for assistance.
SIL65AA-895RPW
Orthophthalic Laminating Resin
Technical Data Sheet