In this study, acrylonitrile-butadiene-styrene and polycarbonate substrates plastics were coated with aluminum by physical vapor deposition method in order to determine which one is a better choice for outdoor reflector technology. This investigation has been done by applying the coating on a reflector that is already been used in the lighting industry. Scraping test, caustic soda and caustic potash test, reflection efficiency performance test and surface roughness test methods were used to determine the selection. Coatings on acrylonitrile-butadiene-styrene and polycarbonate plastic materials were characterized by scanning electron microscopy and energy dispersive x-ray spectrometry. Although acrylonitrile-butadienestyrene plastic material is easier for injection molding and cheaper than polycarbonate material, the results showed that polycarbonate plastic material is more efficient than acrylonitrile-butadiene-styrene plastic material, especially in terms of surface roughness and reflection efficiency.

Polimerik yara örtüleri çeşitli polimerlerin bir arada kullanılabilmesi, ucuz olmaları ve yara iyileşmesini desteklemesi sebebiyle yara tedavisinde sıklıkla tercih edilmektedir. Ancak bu yara örtülerinin düzensiz şekilli yaralarda kullanılamaması yara tedavisinde karşılaşılan önemli bir sorundur. Son zamanlarda 3B yazıcılar kullanılarak kişiye özel üretilen yara örtüleri bu sorunu ortadan kaldırmış ve araştırmacılar için oldukça ilgi çekici bir konu haline gelmiştir. Kişiselleştirilen bu yara örtüleri hastaya özel tedavi yöntemleri sunarak bu alandaki sınırlamaları ortadan kaldırmıştır. Bu çalışmada, çeşitli biyouyumlu polimerler kullanılarak 3B yazıcılar ile üretilen polimerik yara örtüleri ile ilgili literatür çalışmaları incelenmiş ve bu yara örtülerinin yara iyileşmesindeki etkilerine odaklanılmıştır.

From the past to the present, plastic materials are used extensively in all areas of the industry, thanks to their shaping capabilities. Especially in the last 10 years, with the proliferation of desktop type 3D printers in the additive manufacturing sector, thermoplastics have become the most widely used plastic material. Therewith, the assembly of materials produced by this method has gained so much importance. Since plastic materials have low surface energy, there are difficulties in performing the adhesive bonding process, which is a popular joining method, and some issues (adhesive type, surface cleaning, etc.) should be carefully considered. In this study; PLA sheets were produced by means of additive manufacturing method and joined with two different adhesives (Loctite 9492 and Terason 9225). For surface preparation, mechanical sanding was performed using 320 and 600 grit size SiC sandpaper. Adhesive bonding joints were created from PLA-PLA material with three different adhesive thicknesses (0.3, 0.18 and 0.1mm). Joints were subjected to tensile test and their mechanical properties were examined. The results showed that high fill ratio in 3D printing increases the strength of parts. In addition, the strength of the adhesively bonded surfaces is affected by the variation of the adhesive thickness and the adhesive type. Whilst an increase in the adhesive thickness increases the strength of Loctite EA 9492 joints; just an opposite effect in Teroson PU 9225 joints was observed.