||Bonding strength between two injection molded Polymers
||Stanic, Jasna Nilsson
||Hansen, Hans Nørgaard (Institut for Produktion og Ledelse, Danmarks Tekniske Universitet, DTU, DK-2800 Kgs. Lyngby, Denmark)
||Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
||This Master Thesis project deals with the relevant factors that may effect replication and
the bonding strength between two polymers injection molded by transfer injection molding.
Great importance was attached to the processing parameters during injection molding of
micro channels, and their influence on the replication and bonding strength quality. The
finale component consists of two different polymers, several material combination was
injection modled, Ultem 1000, Lexan 500R and Victrex 150GL30. Replication quality was
examined on the premold with focus on the micro channels.
This degree thesis is divided into six chapters.
First chapter encompass introduction to the performed work along with the employed
methodology. Fallowing chapter describes the injection molding process, all phases included
in one cycle and some of injection molding variants. Though, injection molding of both preand
postmold was performed on the conventional injection molding machine.
Design process of the premold is described in the chapter three, that extends from
determination of the end use requirements to the evaluation of the molded component and the
processing. Design process for the premold is performed by fallowing the general guide lines
for the macroscopic component, nevertheless adapted to the micro scale.
Chapter four describes the design of the premold, where the output from the injection molding
of the premold, among other things, was taken in consideration.
Theoretical bonding strength with the characterization and different bonding strength theories
are included in chapter five.
Last chapter is composed of the experimental work related to the processing of the pre- and
postmold. Experiments were carried out on surface roughness, glass fibre content within the
molded component, weight examination and tensile testing of the bonding strength in order to
relate effects of the processing conditions on the bonding strength.
Creation date: 2008-02-08
Update date: 2008-02-08