| Polyurethane adhesive sealant (bonding compound) -AKD 476
KD5 05- |
| Polyurethane adhesive sealant -AKD 476 KD5 05- is a one-pack
adhesive sealing paste on polyurethane basis which, when exposed
to air humidity, hardens into a rubbery-elastic material. |
| The time required to form a skin or to cure completely
depends on the air humidity and the temperature. The curing time
also depends on the depth of joints. |
| Increasing the temperature and air humidity can reduce these
times. Low temperatures and low air humidity, on the other hand,
increase them. |
| Can be overpainted, even “wet-on-wet” |
| Levels out slightly on the surface |
| High resistance to ageing |
| Polyurethane adhesive sealant -AKD 476 KD5 05- is used for
elastic seals and bonds, especially for sealing seams and very
narrow gaps where the lack of durability is not a problem, in
the field of body and vehicle construction as well as add-on
structures, especially when the seam sealant is to be painted
over. To avoid yellowing or cracking, the sealant should always
be painted over when applied to vehicle exterior. |
| When polyurethane adhesive sealant -AKD 476 KD5 05- is used,
mechanical attachment by means such as bolting, welding and
clamping can, in some cases, be omitted. Until the adhesive
sealant has cured, parts should be temporarily fixed in position
with adhesive tape strips and spacers. |
| Polyurethane adhesive sealant -AKD 476 KD5 05- has the major
advantage of being both an adhesive and a sealant. |
| The material is not suitable, or only conditionally
suitable, for the bonding of load-bearing joints. |
| Polyurethane adhesive sealant -AKD 476 KD5 05- offers good
adhesion without glass or paint primer on primed or painted
metal bodywork, on wood (untreated, varnished or painted), some
plastics such as PBTP, polyurethane hard foam or
fibreglass-reinforced polyester. |
| Depending on the substrate, it may be necessary to apply
glass or paint primer to achieve the best possible adhesion. |
| Due to the large number of primers, paints and differing
plastic surfaces etc., we recommend conducting an
application-specific test beforehand. |
| Careful cleaning of plastic and metal surfaces with a
suitable solvent often results in significantly better adhesion. |
 Note
| Before using, read the safety measures and recommendations
in the safety data sheet. |
| Even for products which are not required by law to be
labelled, the usual safety measures for chemical products must
be observed. |
Note
| Areas of the body to be sealed and adhesion surfaces must be
isolated using 2-pack surfacer before the material is applied. |
| The adhesion surfaces must be dry, free of oil, dust, grease
and any other impurities. Cleanser A, cleanser D and plastic
cleaner -D 195 850 A1- are all suitable for cleaning purposes. |
| Polyurethane adhesive sealant -AKD 476 KD5 05- is applied
from 310 mm cartridges using a hand cartridge gun or a pneumatic
cartridge gun. The 310 ml soft plastic cartridges can be used
with hand-cartridge gun -V.A.G 1628- or with pneumatic cartridge
gun -V.A.G 1761/1-. A pressure of 2 to 5 bar is required for
application with compressed air. |
| Low sealant temperatures increase its viscosity, which
results in a lower spraying rate. To prevent this, the sealant
should be brought to the correct temperature in an appropriate
manner before beginning application. |
| If the substrate is too cold, condensation can form if the
temperature is lower than the dew point. This is to be avoided
by warming the substrate beforehand. |
| After application, polyurethane adhesive sealant -AKD 476
KD5 05- can be smoothed with a jointing iron or a filling knife
which has been moistened with low surface-tension water. If the
edges of the joint have been masked, simply pull off the tape
with a filling knife. |
| Cleanser D is recommended for removing fresh adhesive
sealant from equipment. |
| Polyurethane adhesive sealant -AKD 476 KD5 05- can be
overpainted “wet-on-wet” with one-pack and two-pack alkyd
resin-acrylic-base repair paints as well as with all Genuine
repair paints. |
| Nitrocellulose repair paint in an aerosol can and paint,
paint thinner and catalysts containing alcohol are not
compatible with the adhesive sealant (no hardening). |
| Corrosion protection primers may be applied only to fully
cured material because they generally severely impede water
vapour diffusion. |
| If drying is accelerated by the use of a drying oven or an
IR radiant drier , a pre-reaction and waiting time of at least
30 minutes must be adhered to. Only then may the overpainted
adhesive sealant be warmed. The maximum permitted heat exposure
for uncured material is 1 hour at +90 °C. |
| Polyurethane adhesive bonding compound -AKD 476 KD5 05- will
not adhere to sealants on MX polymer or silane-modified polymer
basis. |
| On the other hand, good adhesion will be achieved when
applying materials based on MS polymers or silane-modified
polymers to fully cured polyurethane adhesive bonding compound
-AKD 476 KD5 05- |
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Sprayable sealant