Silicones, silicone oils, sprays
Casting and potting resins
Internal reference:
49-7220.FL.ML250
HS code:
35069900
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Brand
- Permabond
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Country of origin
- Italy
- Container
- 250 ml
Physical Properties
- Chemical group
- Cationic Epoxy
Curing values
- Curing Wavelength
- 365 nm
Thermal Properties
- Storage Temperature (°C)
- 5-25
Features
- Color
- black
Product Description
Permabond UV7220 is a one-component cationic epoxy with UV and heat curing — the rare combination of two curing mechanisms in a black pigmented adhesive for demanding industrial applications.
Unlike conventional UV acrylates, UV7220 utilizes a cationic epoxy chemistry—a variant that cures like a conventional epoxy resin with heat or UV light (365 nm), or with a combination of both methods. The cationic reaction is oxygen-independent—the adhesive cures reliably even in thick layers and under protective films.
The black pigmentation makes UV7220 the ideal choice for visible adhesive seams on dark substrates or for applications where the adhesive seam needs to blend in color. Low shrinkage, a tack-free surface, and excellent chemical and temperature resistance are further advantages.
Cationic epoxy with a triple curing mechanism — UV light (365 nm), heat, or a combination of both. One-component, solvent-free, excellent chemical and temperature resistance. Black pigmented for shadowing and visible adhesive seams.
What distinguishes Permabond UV7220
What is Permabond UV7220 used for?
Processing
Recommended accessories
Important Notes
Which Permabond UV adhesive for which application?
Permabond UV7220 in direct comparison with related products of the UV series.
Permabond UV7220 Current Product | Permabond UV7138 → | Permabond UV681 → | Permabond UV683 → | |
|---|---|---|---|---|
| Application | Cationic Epoxy UV+Heat Dual Cure (black) | Engineering adhesive (Specs on request) | Coating instead of adhesive | Doming application |
| Viscosity | — | — | 80–120 mPa·s | 1,000–1,600 mPa·s |
| Substrate Strength | — | Special | Coating | Doming |
| Elongation at break | — | — | >50 % | >50 % |
Frequently asked questions about Permabond UV 7220
Practical application and design questions — answered by SILITECH.
Permabond UV7220 is a cationic epoxy (UV + heat curing) adhesive with a viscosity of [missing value]. This black, one-component, solvent-free cationic epoxy cures under UV and heat curing conditions. The adhesive cures upon exposure to UV light in the 365 nm spectral range, providing instant curing "on demand".
Permabond UV7220 cures in the 365 nm spectral range. Standard mercury vapor UV lamps, LED UV lamps with a suitable wavelength, or UV light guide systems are all suitable. For LED lamps, the maximum wavelength of the LED must be matched to the curing spectrum of the adhesive—we are happy to advise you on selecting the right lamp.
The UV curing time of Permabond UV7220 depends on the lamp power, wavelength, and light transmittance of the components. Typical curing times range from seconds to a few minutes.
Permabond UV7220 typically bonds glass, metals, and plastics. See TDS for substrate-specific strength values.
Permabond UV7220 is a cationic epoxy UV+heat dual-cure (black) (— viscosity, — elongation at break). Permabond UV7138 is a special UV adhesive (—, — elongation at break) — engineering adhesive (specs on request).
When stored at 5 to 25 °C and protected from light, Permabond UV7220 is stable until the printed expiration date. IMPORTANT: UV adhesives cure upon contact with light — always store the bottle in the dark and only open it briefly under UV-blocked light. Daylight-stable variants (e.g., UV675) can be used briefly under ambient light.
From the Permabond UV range, select according to substrate, viscosity, and special properties: Permabond UV7220 (Cationic Epoxy UV+Heat Dual-Cure (black)); Permabond UV7138 (Special UV Adhesive); Permabond UV681 (Conformal Coating); Permabond UV683 (Doming Coating). For shaded areas (where UV light does not fully reach the adhesive gap), a dual-cure variant such as Permabond UV7141 (UV + Anaerobic) should be used.