ArticleThe utilization of adhesives in technical practice is varied. Adhesives serve for a
creation of strength bonds on the one hand, and on the other hand e.g. for cementing. The aim of
the research is a modification of one
-
component polyurethane putty RPS 45 used in automotive
industry to increase strength properties in an adhesive bond. An i
nteraction between a filler in the
form of rubber powder micro
-
particles and one
-
component polyurethane adhesive was
investigated by means of SEM analysis. Sealing is a primary property of this putty. Sealing putties
usually reach very small strength which
can be increased by an admixture of the filler. In order
to keep elastic properties, micro
-
particles of the rubber powder gained from tyre recycling process
were used as the filler. An aspect of a loading speed of the adhesive bond is essential at the
pra
ctical application at which the adhesive bond can be failed in adhesive or cohesive layers. The
adhesive bond can be perceived in terms of its function as a complex of three layers, i.e. an
adhesive bonded material, the interaction between the adhesive and
the adhesive bonded material
and the adhesive layer itself. There are often states in the practices when the adhesive bonds are
exposed to the loading which can be either a static or a dynamic one. That is why the research is
focused not only on the evalu
ation of the influence of the modification of the one
-
component
polyurethane adhesive, but also on the influence of the loading speed of the adhesive bond. Tested
speeds set on a universal testing machine Zwick/Roell Z150 were 2, 50 and 100
mm
min
-
1
. The
r
esults of mechanical tests proved a positive influence of the filler on the strength σ
m
higher by
42.68
±
6.96% and the elongation at break ε
b
higher by 12.2
±
20.95%. On the contrary, the stress
at yield σ
y
was decreased
