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147-154 M. Müller
Research of liquid contaminants influence on adhesive bond strength applied in agricultural machine construction
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Research of liquid contaminants influence on adhesive bond strength applied in agricultural machine construction

M. Müller

Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Science, Kamýcká ¹²⁹, ¹⁶⁵²¹ Prague, Czech Republic; e-mail: muller@tf.czu.cz

Abstract:

An  adhesive  bonding  technology  is  a  prospective  bonding  technology  of  diverse materials.  Namely the research in the  sphere of the degradation aspects affecting the adhesive bond  during  the  technical  life  of  the  adhesive  bonded  complex  is  essential.  Mineral  and industrial fertilisers can be included as significant degradation agents. The aim of the research was to find out the relevant knowledge in the sphere of the degradation of the adhesive bonds placed in the water bath, the oil bath and the solution of the mineral and industrial  fertilisers.  The  experiment’s  results  bring  knowledge  for  producers  of  agricultural machines  introducing  adhesive  bonding  technology  into  their  production  programme.  Two-component constructional epoxy adhesives were tested which were placed into the water bath, the  oil  bath  and  the  solution  of  mineral  and  industrial  fertilisers.  Some  agents  caused  such changes in the adhesive that the adhesive bond strength decreased to zero value already after ⁹0 days.  Significant  changes  of  the  adhesive  bond  strength  occurred  in  the  interval  ¹⁵–⁴⁵  days depending on the adhesive and agents. The strength decrease was connected with the change of a  failure  area  from  cohesive  one  to  combined  and  then  to  adhesive  one.  The  research  showed that it came to diffuse seepage and to a partial corrosion of the adhesive bonded steel samples.

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