Toray BT250E-1

Toray

Toray BT250E-1 resin system is a 121°C (250°F) cure epoxy prepreg system with excellent toughness and strength. It provides an outstanding surface finish under vacuum-bag/oven-cure only. The resin system, which is self-adhesive to honeycomb and foam core, is MIL-R-9300 qualified and makes a great choice for many Applicationss in the low-tomedium-service temperature range.

End Uses:

Radomes, Reflectors, Tanks

Functions:

Prepreg

Polymer Name:

Epoxy Resins & Compounds

Processing Methods:

Out of Autoclave Prepreg, Vacuum Bagging

Markets:

Automotive & Transportation
Industrial

Product Type:

121°C (250°F) Cure, Epoxy Prepreg System

Technology:

Composite Materials

Physical Form:

Prepreg

Chemical Family:

Epoxy & Epoxy Derivatives

Composites End Use:

Radomes
Reflectors
Tanks

Material Features:

Excellent Toughness
Flame Retardant
Good Surface Appearance
High Strength

HIGHLIGHTS:

Excellent system for out of autoclave cure
Toughened for good impact resistance
MIL-R-9300 qualified
Ideal for low-to-medium service temperature Applicationss

Product Families

Composite Materials — Prepregs & Molding Compounds

Thermoset Prepregs

Characteristic name	Value	Unit of measurement	Test method
Compressive Modulus	2.8 (0.4)	Gpa (Msi)	-
Compressive Strength	115 (16.7)	MPa (Ksi)	-
Flexural Modulus	3.4 (0.50)	Gpa (Msi)	-
Flexural Strain	5.5	%	-
Flexural Strength	156 (22.6)	MPa (Ksi)	-
Tensile Modulus	3 (0.44)	Gpa (Msi)	-
Tensile Strain	2.5	%	-
Tensile Strength	75 (10.9)	MPa (Ksi)	-

Characteristic name	Value	Unit of measurement	Test method
Coefficient of Thermal Expansion (CTE)	71 (39)	ppm/°C (ppm/°F)	-
Glass Transition Temperature (Tg)	125 (257)	°C (°F)	-

Characteristic name	Value	Unit of measurement	Test method
Density	1.17	g/cc	-
Dielectric Constant at 10 GHz	3	-	-
Dielectric Constant at 10 GHz on 4581 quartz	3.26	-	-
Loss Tangent at 10 GHz	0.019	-	-
Loss Tangent at 10 GHz on 4581 quartz	0.0081	-	-
Moisture Absorption after 24 hr water boil	2	%	-