LOCTITE AA 3953
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Medium-Viscosity Flexible Bonding
- Fast 405 nm LED Fixture
- Flexible 233% Elongation
Product Description
LOCTITE AA 3953 is a one-part, medium-viscosity UV/visible-light-curing acrylated urethane adhesive for flexible material bonding in medical-device assembly. The transparent, fluorescent material bonds plasticized PVC, thermoplastic elastomers, thermoset rubbers, and compatible rigid plastics. On glass, fixture is achieved in 5 seconds or less with 405 nm LED light at 10 mW/cm^2. After 10 seconds at 1 W/cm^2 and 405 nm, typical cured properties include 233% elongation and 22.1 N/mm^2 tensile strength, combining flexible mechanical response with fast light processing. Cure and bond results depend on light dose, substrate, geometry, and preparation.
Key features
- Medium-viscosity flexible bonding: Cone-and-plate viscosity is 300 to 800 mPa s (cP) at 25 deg C and a shear rate of 180 s^-1.
- Fast 405 nm LED fixture: Fixture is 5 seconds or less on glass at 10 mW/cm^2 measured at 405 nm.
- Cured flexibility: Typical elongation at break is 233% after 10 seconds at 1 W/cm^2 and 405 nm.
Applications
Bonding flexible materials including plasticized PVC, TPE and thermoset rubbers in medical-device assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Mechanical Properties
Chemical Properties
Other Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Transparent, colorless to straw liquid | Uncured | |
| UV fluorescence | Positive | Under UV light | |
| Specific gravity | Approx. 1.07 | 25 deg C | |
| Cone and plate viscosity | 300 to 800 | mPa s (cP) | 25 deg C; shear rate 180 s^-1 |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 56 | Durometer D | ISO 868; 1 W/cm^2 at 405 nm for 10 s |
| Elongation at break | 233 | % | ISO 527-3; 1 W/cm^2 at 405 nm for 10 s |
| Tensile strength | 22.1 | N/mm^2 | ISO 527-3; 1 W/cm^2 at 405 nm for 10 s |
| PC-to-PVC block shear | 5.0 | N/mm^2 | ISO 13445; 1 W/cm^2 at 405 nm for 10 s |
| Grit-blasted PC-to-PC block shear | 22.5 | N/mm^2 | ISO 13445; 1 W/cm^2 at 405 nm for 10 s |
