COMPOSITION:
Technobond D4 is an aqueous polyvinil acetate dispersion based adhesive for wood, containing reactive groups, able to be crosslinked with aluminium ions.
TECHNOBOND D4
Two component water resistant wood adhesive
COMPOSITION:
Technobond D4 is an aqueous polyvinil acetate dispersion based adhesive
for wood, containing reactive groups, able to be crosslinked with aluminium
ions.
APPLICATION:
Technobond D4 is useful in the joinery industry as a waterproof adhesive. It
is suitable for
- indoor bonded joints (for long lasting or high moisture exposure),
- outdoor bonded joints,
in which one of the bonded joints is made of wood (for example: stairs,doors,windows).
Classification according to DIN EN 204: D1, with catalyst: D4.
Issued by: Institut für Fenstertechnik Rosenheim
(proceedings of inquiry’s number is 50522819 U)
SAFETY ASPECTS:
Non-toxic and non-flammable
Take into consideration when using the material, that the catalyst is a strongly
acidic material.
STORAGE:
Store in dry place, protected from frost and direct sunlight. Optimal storage
temperature: +5-25°C. Shelf-life: min.6 months, in original closed container.
TECHNICAL INFORMATIONS:
Appearance: white, homogenous, thick liquid dispersion with characteristic
mild odour.
Viscosity:
(Brookfield ;7/10) 20 ± 4 Pas.
Density: approx. 1,08 g/cm3
Solids: approx. 50 ± 2%
pH: 4,5-5,5
Minimum gluing
temperature: 5 °C
Open time(at 20°C): approx.10 minutes
Adhesive strength(N/mm2): approx. 10
Potlife: 3-7 days
INSTRUCTION FOR USE:
The product has to be stirred up before using. The adhesive only ensures the
D4 waterproof class with catalyst. Dosage of the catalyst: 100 part adhesive,
5 part catalyst. After efficient mixing the adhesive is ready to use. The potlife
is 3-7 days, depending on the temperature.
The adhesive can be thinned with water.
When 10% water is added to the adhesive:
- the potlife can be extended from 3-7 days to more than 1 week
- adhesive strength remains unchanged
- setting time will be strongly influenced.
The adhesive may not be in contact with equipment made of non-stainless steel
because of possible discoloration. Clean the equipment with water before drying.
Apply Technobond D4 using brush, spatula, roller, or machine roller.
To obtain an ideal adhesive strength, it is necessary to provide a clean, non-dusting,
tightly fitting surface.
Do not use the adhesive, when the temperature of workplace, adhesive and workpiece
are below 5°C. Preferred temperature is above 15°C.
Usually it is enough to apply adhesive to one side(120-180 g/m2), but in the
case of strongly absorbing surface it is necessary to use it to both sides(60-100
g/m2/side). The ideal moisture content of the wood is 8-10%.
In the usual processing do not let open the adhesive coated surfaces more than
10 minutes, because of possible skin formation, which can be not suitable for
bonding.
To increase the adhesive strength, the adhering surfaces have to be pressed
together with 0,2-0,8 N/mm2 pressure.
The minimal required pressing time and temperature have to be optimized according to the used technology.
Bonded joints reach the final strength after 24 hours drying.
The final D4 class waterproof adhesive strength is obtained after 7 days.
OUTSTANDING PARAMETERS:
High D4 value: 6 N/mm2 ( requirement: 4 N/mm2)
Long potlife: 3-7 days
Long open time: 10 minutes
Fast bonding: min. 2 N/mm2; after 2,5 minutes pressing
Packaging: 5kg and 32kg plastic bucket; 130 kg and 150 kg barrel; 1000 kg container
Data, application fields,processing technologies in this technical data sheet are on the basis of our best technical knowledge, but of course this does not contain local conditions in complience with detailed application conditions. Our declarations in this respect are informative!