Akademik Veri Yönetim Sistemi
4. Ulusal Mühendislikte Bilimsel ve Mesleki Çalışmalar Kongresi (UMUH BİLMES 2021), Tokat, Türkiye, 23 Aralık 2021, cilt.4, ss.27-35, (Tam Metin Bildiri)
Prototyping speed is one of the most
important criteria in R&D and P&D processes. 3D printers, which have
been widely used in this field in recent years, come to the fore in many
fields. Although 3D printers can offer solutions independent of the geometrical
constraints of traditional production methods, the limited range of materials
complicates their testability at the same rate. Thermal conductivity, which is
one of these material constraints, prevents providing ideal and fast solutions
especially in electronic cards operating in narrow and confined spaces. At this
point, Graphite powder and coating were used to overcome this difficulty to a
certain extent. This study was carried out with SLA printer and resin, and it
was observed that this composite structure, which was formed by adding graphite
powder in certain proportions into the resin, provides improvements in the
thermal conductivity of the material. Regardless of the cost and difficulties of
producing FDM filaments made in this field, SLA printer and resin constitute an
easier, lower cost and accessible solution. However, the problem brought by
this convenience is that a lower thermal conductivity is obtained compared to
FDM filements. Because the precipitation of the resin-powder solution formed
due to density differences causes the printing time to be kept very short, and
this makes it necessary to form smaller products in terms of dimensions.
However, within the scope of the study, it was observed that the integrateds
with small surface area and less heat dissipation were successful in preventing
the formation of hot spots and prolonging the test period. This situation
provided an efficient development in terms of shedding light on design improvements
by creating opportunities for rapid testing, low cost and rapid decision-making
in the prototyping process.
Keywords: SLA, 3D Printer,
Graphite Powder, Heat Spreader