Datasheet

UHU plus sofortfest
UHU GmbH & Co. KG - P.O. Box 1552, D-77813 Bühl , Tel. [phone] – Fax. [phone] Internet: www.uhu.de
Technical Data Sheet
Merkblatt
Dosing and mixing:
The mixing ratio of the two components is 1:1 parts by volume or by weight, i.e. equal quantities of binder and
hardener. After the parts to be stuck together have been prepared, the adhesive is dosed in the given ratio. Small
variations in the proportions of binder and hardener make virtually no difference. Thorough mixing is essential for
good bonding and even joins.
For mixing, use the bowl provided in the packaging. A clean glass plate, grease-free cardboard or similar may also be
used for mixing, using a spatula.
The adhesive should be very thoroughly mixed. The adhesive should be applied to the parts to be stuck together as
soon as possible after mixing to ensure the best possible bond.
The adhesive is applied using the spatula or a short-haired brush.
Application time (period of usability):
The open time depends on the quantity used and the ambient temperature. For a quantity of 3 to 5g, the mix can be
worked for up to 2 minutes.
Hardening:
At room temperature UHU plus sofortfest hardens so that the join is firm within 5 minutes at the most; after 10
minutes approximately half the final bond strength is reached, and after 1 hour the final bond strength is reached.
The application of heat speeds up the hardening process.
Conditions for hardening:
Temperature Minimum hardening time
+ 5°C 50 minutes
+10°C 30 minutes
+20°C 10 minutes
+25°C 7 minutes
Mixing ratio Hardening at room
(binder and hardener, by temperature
volume) 1:1
= mixing ratio (by weight)
100:80
Test conditions: Application surface: 25 x 10 mm = 250mm²
Test piece: AlCuMg 1, sandblasted (Korund ELK 90):
82.5 x 25 x 1.5 mm
Testing:
In accordance with DIN 53286; testing fixed at
pressure of 1 bar; seven days‘ storage at 20°C /
65% relative humidity prior to testing; testing
machine with temperature chamber (testing
speed: 50 mm/min.).