MATERIALS, ADHESIVES AND COATINGS
Aviation two-component epoxy adhesives ET5422, ET5423, ET5424, ET5441 (high peel strength, up to 230 °C, ECSS-Q-ST-70-02C)
Country: United Kingdom · Model: ET5422/ET5423/ET5424/ET5441
Aviation two-component cold-curing epoxy adhesives ET5422, ET5423, ET5424 and ET5441. ET5422 gives a peel strength of 320 N/25 mm, and ET5424 works from −40 to 230 °C and meets ECSS-Q-ST-70-02C for outgassing.
- ET5422/ET5423
- toughened epoxy/modified polyamide, blue/black; 2:1 by volume; peel 320 N/25 mm (5 days at 23 °C); Tg 60 °C (115 °C after 60 min at 80 °C); impact 20–30 kJ/m²; gap up to 5 mm; pot life 200 g — 1 h
- ET5424
- 4:1 by volume; up to 230 °C, from −40 °C; Tg (DMA) 182 °C; shear Al 22–27 MPa, stainless steel 24–29 MPa; thermal conductivity 0.46 W/(m·K); pot life 10 g — 4 h; full cure 3–5 days at 23 °C or 1 h at 66 °C; ECSS-Q-ST-70-02C
- ET5441
- thermally conductive, 2:1; full cure 7 days at 23 °C; shear steel 20–25 MPa, CFRP 25–30 MPa; UL94 HB; ECSS-Q-ST-70-02C
- Hardness
- > 80 Shore D
Technical specifications
| ET5422/ET5423 | toughened epoxy/modified polyamide, blue/black; 2:1 by volume; peel 320 N/25 mm (5 days at 23 °C); Tg 60 °C (115 °C after 60 min at 80 °C); impact 20–30 kJ/m²; gap up to 5 mm; pot life 200 g — 1 h |
|---|---|
| ET5424 | 4:1 by volume; up to 230 °C, from −40 °C; Tg (DMA) 182 °C; shear Al 22–27 MPa, stainless steel 24–29 MPa; thermal conductivity 0.46 W/(m·K); pot life 10 g — 4 h; full cure 3–5 days at 23 °C or 1 h at 66 °C; ECSS-Q-ST-70-02C |
| ET5441 | thermally conductive, 2:1; full cure 7 days at 23 °C; shear steel 20–25 MPa, CFRP 25–30 MPa; UL94 HB; ECSS-Q-ST-70-02C |
| Hardness | > 80 Shore D |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
ET5422 is rubber-toughened, with a mixing ratio of 2:1 by volume, a gap of up to 5 mm, a pot life of 200 g of one hour, and full cure in 5 days at 23 °C or 1 hour at 82 °C, while post-curing for 60 minutes at 80 °C raises the Tg from 60 to 115 °C. ET5423 has the same formulation but is black, for carbon fiber composites. For comparison, ET5429 gives 230 N/25 mm and ordinary epoxies about 25 N/25 mm. ET5424 has a Tg of 182 °C, a shear strength on aluminum of 22–27 MPa (25–30 MPa after curing at 66 °C) and on stainless steel of up to 32 MPa, and is approved for ATEX zones. ET5441 is thermally conductive, resists oil, glycol and water, and meets UL94 HB and ECSS-Q-ST-70-02C.
How to choose
For lightweight composite and carbon fiber parts without fasteners, ET5422 or the black ET5423 is used; for space materials and high heat resistance, ET5424; and for metals with heat dissipation, ET5441. All cure at room temperature with the option of acceleration by heating, have a long open time for aligning large parts, and are supplied in gun cartridges or in containers for automatic dispensing.
Request a price and lead time
Aviation two-component epoxy adhesives ET5422, ET5423, ET5424, ET5441 (high peel strength, up to 230 °C, ECSS-Q-ST-70-02C). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What peel strength does ET5422 have?
320 N/25 mm on aluminum after 5 days at 23 °C. For comparison, ordinary epoxies give about 25 N/25 mm.
Up to what temperature does ET5424 work?
From −40 to 230 °C, with a Tg of 182 °C. The adhesive meets ECSS-Q-ST-70-02C for thermal vacuum outgassing.
What shear strength does ET5424 give on aluminum and steel?
22–27 MPa on aluminum, 25–30 MPa after curing at 66 °C, and up to 32 MPa on stainless steel.
How does ET5423 differ from ET5422?
The formulation is the same, but ET5423 is black and intended for carbon fiber composites.
Can the curing of ET5422 be accelerated?
Yes, full cure in 1 hour at 82 °C instead of 5 days at 23 °C. Post-curing for 60 minutes at 80 °C raises the Tg from 60 to 115 °C.
Similar products
C-RAM RGD / KR / KRS / KFS / VHPC-RAM RGD / KR / KRS / KFS / VHP rigid and cast iron-epoxy and iron-silicone absorbers, radar-absorbing paints
C-RAM EVA / SFC-MP / ODP / CFCC-RAM EVA / SFC-MP / ODP / CFC higher-power, ventilated, all-weather and cleanroom pyramidal absorbers
UV15DC80 / UV22DC80-1 / UV26DC / LED401 / LED422DC90Dual-Cure Systems (UV/LED + Heat) for Shadow Areas
EP21TP-2NV / EP21TPFL-1 / EP21TPHT / EP30D-7 / Super Gel 9Epoxy-Polysulfide and Urethane-Modified Flexible SystemsREQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.