PSB250 BMI-CF Prepreg – High-Strength Carbon Fiber Resin for 250°C Autoclave Use

Prepreg PSB250 bismaleimide carbon fiber reinforced resin is designed for the production of composite parts or tools operated at temperatures up to 250°C. As a reinforcing material for a prepreg based on the bismaleimide resin PSB250, unidirectional belts and fabrics of various weave can be used. It shows the following features and properties:

Glass transition temperature 266°С

High strength and rigidity

Curing temperature 190°C, post-curing 230°C

Good stickiness

Properties

Mechanical

Property	Temperature	Value	Comment
Compressive strength	25.0 °C	1071 MPa	ASTM D6641
	150.0 °C	973 MPa	ASTM D6641
	180.0 °C	860 MPa	ASTM D6641
	230.0 °C	810 MPa	ASTM D6641
	250.0 °C	780 MPa	ASTM D6641

Compressive strength, transverse	90.0 °C	205 MPa	ASTM D6641
	150.0 °C	158 MPa	ASTM D6641
	180.0 °C	151 MPa	ASTM D6641
	250.0 °C	118 MPa	ASTM D6641

Elastic modulus	23.0 °C	137 GPa	ASTM D3039
Elastic modulus, transverse	23.0 °C	9.5 GPa	ASTM D3039
Shear strength, τ₁₂	23.0 °C	72 MPa
Shear strength, τ₁₃	25.0 °C	87 MPa	ASTM D2344
	150.0 °C	73 MPa	ASTM D2344
	180.0 °C	70 MPa	ASTM D2344
	250.0 °C	52 MPa	ASTM D2344

Tensile strength	23.0 °C	1711 MPa	ASTM D638
Tensile strength, transverse	23.0 °C	30 MPa	ASTM D3039

Technological properties

Property
Processing history	Samples for testing were obtained by vacuum infusion based on PN-3M resin and carbon fabric 22502 (twill 2x2, 200 g/m2, HTA40-3K, 3.95 GPa)
Processing methods	Molding mode: 1)Heat 2°С/min to 145°С, vacuum –1bar, pressure 0 bar, 2)Hold at 145°C for 120 min, vacuum -1 bar, pressure 0 bar 3)Heat 2°C/min to 180°C, pressurize 5.5 bar, release vacuum 4)Hold at 180°C for 240 minutes, pressure 5.5 bar 5)Cool no faster than 5°C/min to 60°C, pressure 5.5 bar. Post-curing cycle: 1)Post-cure of the part can be carried out without a tooling, 2)Heat at rate 2°C/min to 180°C, 3)Heat no faster than 0.2°C/min to 230°C, 4)Holding at 230°C for 300min, 5)Cooling is not faster than 5°C/min to 25°C, 6)To achieve heat resistance up to 250°C, additional post-curing is required at 250°C for 240 minutes, 7)Heat from 230°C to 250°C at rate 2°C/min.

T107 Autoclave Epoxy Prepreg (BMI-CF) – High‑Strength, 150°C Operating Temperature OOA Prepreg B180 CF02 (0/+45° N-S) – High-Temperature Epoxy Carbon Fiber Composite

Composite material