T20‑60: Advanced Low‑Viscosity Epoxy Resin for High‑Performance CFRP Production

T20-60 is a two-part low viscosity epoxy infusion carbon fiber reinforced resin developed for mass CFRP production. The resin offers simple and flexible processing due to low viscosity and room temperature impregnation. T20-60 was developed specially for vacuum infusion molding, to produce laminates with low porosity and optimal mechanical performance. It shows the following features and properties:

Two-part resin system for vacuum infusion and RTM

Wide processing window > 2 hours at 25°C

Curing at room temperature

Low exotherm

High crack resistance

Optimal price/quality ratio

Properties

Mechanical

Property	Temperature	Value	Comment
Compressive modulus	25.0 °C	61 MPa	ASTM D695
	80.0 °C	56 MPa	ASTM D695

Compressive strength	25.0 °C	583 MPa	ASTM D6641
	80.0 °C	460 MPa	ASTM D6641

Elastic modulus	23.0 °C	61 GPa	ASTM D3039
Shear modulus, G₁₂	25.0 °C	4.1 GPa	ASTM D5379
	80.0 °C	2.5 GPa	ASTM D5379

Shear strength, τ₁₂	25.0 °C	110 MPa
	80.0 °C	56 MPa

Shear strength, τ₁₃	25.0 °C	58 MPa	ASTM D2344
	80.0 °C	36 MPa	ASTM D2344

Tensile strength	23.0 °C	777 MPa	ASTM D3039

Technological properties

Property
Application areas	Marine: The shells of boats and sport catamarans can be made of composite;Car tuning: The composite material provides solutions for automotive parts to be light-weighted, stylish and aesthetic;Wind energy: Wind turbines is usually made of carbon fiber plastic;Design;Room temperature tooling;High-pressure cylinders
Processing history	Samples for testing were obtained by vacuum infusion based on T20-60 resin and carbon fabric 22502 (twill 2x2, 200 g/m2, 3K, 3.95 GPa).
Processing methods	Mix the components A and B and weight proportion 100:32. Degas the resin with intensive mixing for 15-20 minutes at 20-25°С. Maintaining resin pot temperature of 20-25°С and tool temperature of 20-25°С, begin resin infusion. Cure at room temperature for 24h. Make sure the resin is gelled. Remove auxiliary materials. Increase temperature at rate 0,5-2°С/min to 80°С. Postcure at 80°С for 3-6h.

T107 Epoxy Carbon Fiber Prepreg – High-Temperature, High-Strength Autoclave Material TK123: Low‑Viscosity Two‑Part Epoxy Resin for Vacuum‑Infusion CFRP (120°C Tooling)

Composite material