Park Aerospace Nelcote® P-650R Polyester Prepreg, 7781 E-Glass Reinforced

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Park Aerospace Nelcote® P-650R Polyester Prepreg, 7781 E-Glass Reinforced
Categories:	Polymer; Thermoset; Polyester, TS
Material Notes:	Nelcote® P-650R is a non-styrenated/low VOC polyester resin system that has been designed for optical clarity. P-650 exhibits good mechanical properties up to 250°F. Key Features and Benefits: Non-styrenated / low VOC resin system Meets requirements of MIL-R-7575C, grades A and B, class 2 Good optical clarity for aircraft lighting, etc. Applications/Qualifications: Aircraft lighting Wing-light lenses Aircraft floor lighting Information provided by Park Electrochemical Corp.
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Physical Properties	Original Value	Comments

Specific Gravity	1.88 g/cc
Volatiles	<= 1.0 % @Temperature 104 °C	8 min
Thickness	10.0 mil	cured laminate, per ply

Mechanical Properties	Original Value	Comments
Hardness, Barcol	76
Tensile Strength, Yield	61000 psi @Temperature 23.9 °C	0° Direction, Wet (2 hour water boil); ASTM D638 Type 1
	68000 psi @Temperature 23.9 °C	0° Direction, Dry; ASTM D638 Type 1
Tensile Modulus	3600 ksi @Temperature 23.9 °C	0° Direction, Wet (2 hour water boil); ASTM D638 Type 1
	3700 ksi @Temperature 23.9 °C	0° Direction, Dry; ASTM D638 Type 1
Flexural Strength	72.0 ksi @Temperature 71.1 °C	Dry; ASTM D790
	85.0 ksi @Temperature 23.9 °C	Wet (2 hour water boil); ASTM D790
	97.0 ksi @Temperature 23.9 °C	Dry; ASTM D790
Flexural Modulus	3100 ksi @Temperature 71.1 °C	Dry; ASTM D790
	3300 ksi @Temperature 23.9 °C	Dry; ASTM D790
	3300 ksi @Temperature 23.9 °C	Wet (2 hour water boil); ASTM D790
Compressive Strength	57.0 ksi @Temperature 23.9 °C	Wet (2 hour water boil); ASTM D695
	61.0 ksi @Temperature 23.9 °C	Dry; ASTM D695
Compressive Modulus	3700 ksi @Temperature 23.9 °C	Wet (2 hour water boil); ASTM D695
	4000 ksi @Temperature 23.9 °C	Dry; ASTM D695

Processing Properties	Original Value	Comments
Gel Time	0.500 min
Shelf Life	3.00 Month @Temperature 4.44 °C
	6.00 Month @Temperature -17.8 °C

Descriptive Properties
Fabric Area Weight (g/m²)	300
Prepreg Resin Content (%)	38-44
Resin Flow (%)	10-11	275°F, 15psi

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