Park Electrochemical Nelcote® E-720 Epoxy Prepreg, 7781 E-Glass Reinforced

Category	Polymer , Thermoset , Epoxy
Manufacturer	Park Electrochemical Corp.
Trade Name	Nelcote®
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Park Electrochemical Nelcote® E-720 Epoxy Prepreg, 7781 E-Glass Reinforced.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Nelcote® E-720 is a modified epoxy resin system designed to retain excellent mechanical properties after extended exposure to high temperature. E-720 has a proven history in many demanding aerospace applications.Key Features and Benefits:Excellent retention of mechanical properties after long-term high temperature exposureLong out-time for easy processingGood electrical propertiesApplications/Qualifications:Secondary Aircraft StructuresRadomesNacellesInlet DuctsFairingsInformation provided by Park Electrochemical Corp.

Physical Properties	Metric	English	Comments
Volatiles	<= 2.0 % @Temperature 135 °C	<= 2.0 % @Temperature 275 °F

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	80	80
Tensile Strength, Yield	310 MPa @Temperature 216 °C	45000 psi @Temperature 420 °F	0° Direction, Dry; ASTM D638
	310 MPa @Temperature 260 °C	45000 psi @Temperature 500 °F	0° Direction, Dry; ASTM D638
	345 MPa @Temperature 177 °C	50000 psi @Temperature 350 °F	0° Direction, Dry; ASTM D638
	414 MPa @Temperature 23.9 °C	60000 psi @Temperature 75.0 °F	0° Direction, Dry; ASTM D638
Flexural Strength	207 MPa @Temperature 260 °C	30000 psi @Temperature 500 °F	Dry; ASTM D790
	345 MPa @Temperature 216 °C	50000 psi @Temperature 420 °F	Dry; ASTM D790
	414 MPa @Temperature 177 °C	60000 psi @Temperature 350 °F	Dry; ASTM D790
	586 MPa @Temperature 23.9 °C	85000 psi @Temperature 75.0 °F	Dry; ASTM D790
Flexural Modulus	16.5 GPa @Temperature 260 °C	2400 ksi @Temperature 500 °F	Dry; ASTM D790
	19.3 GPa @Temperature 216 °C	2800 ksi @Temperature 420 °F	Dry; ASTM D790
	20.0 GPa @Temperature 177 °C	2900 ksi @Temperature 350 °F	Dry; ASTM D790
	23.4 GPa @Temperature 23.9 °C	3400 ksi @Temperature 75.0 °F	Dry; ASTM D790
Compressive Strength	310 MPa @Temperature 260 °C	45000 psi @Temperature 500 °F	Dry; ASTM D695
	359 MPa @Temperature 177 °C	52000 psi @Temperature 350 °F	Dry; ASTM D695
	359 MPa @Temperature 216 °C	52000 psi @Temperature 420 °F	Dry; ASTM D695
	414 MPa @Temperature 23.9 °C	60000 psi @Temperature 75.0 °F	Dry; ASTM D695
Shear Strength	33.1 MPa @Temperature 177 °C	4800 psi @Temperature 350 °F	Short-Beam, Dry; ASTM D2344
	46.2 MPa @Temperature 23.9 °C	6700 psi @Temperature 75.0 °F	Short-Beam, Dry; ASTM D2344

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	180 °C	356 °F	Laminate; standard cure
	230 °C	446 °F	Laminate; post cure

Electrical Properties	Metric	English	Comments
Dielectric Constant	4.2	4.2
Dissipation Factor	0.015	0.015

Processing Properties	Metric	English	Comments
Gel Time	1.00 - 2.00 min	1.00 - 2.00 min
Shelf Life	12.0 Month @Temperature -17.8 °C	12.0 Month @Temperature 0.000 °F

Descriptive Properties	Value	Comments
Fabric Area Weight (g/m²)	300
Prepreg Resin Content (%)	33-37
Resin Flow (%)	10-24	325°F, 50psi

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