Kalsiyum Stearat-Epoksi Bazlı Kompozit Malzemelerde Hidrofobisitenin Araştırılması

Abstract

Hidrofobik yüzeyler inşaat, otomotiv, elektronik ve medikal sektörler başta olmak üzere birçok alanda ürünlerin dayanıklılığını ve performansını artırmada kritik bir rol oynar. Bu özellik kirlenme ve korozyona karşı doğal bir bariyer oluşturarak bakım maliyetlerini düşürürken malzemelerin ömrünü uzatır. Ayrıca, bu teknolojinin uygulanması, enerji verimliliği ve çevresel sürdürülebilirlik hedeflerine ulaşmada yenilikçi çözümler sunmaktadır. Çalışmamızda kalsiyum setarat (CS) ve epoksi kullanılarak geliştirilen kompozit malzeme, yüzeylere uygulanabilen ve hidrofobik özellikleri artıran bir kaplama çözümü olarak sunulmuştur. Bu yaklaşımda, CS’ın su itici özellikleri ile epoksinin yapısal dayanıklılığı bir araya getirilerek, farklı yüzeylere uygulanabilecek bir birleşim geliştirilmek istenmiştir. Epoksi içerisine ağırlıkça %1, %2, %4, %6, %8 ve %10 oranlarında CS karıştırılarak elde edilen kompozitin saf suya karşı temas açısı ölçülmüştür. Katkısız epoksi hidrofilik yapıda olup temas açısı 70,5˚ ölçülürken, 117,5˚ ‘lik temas açısı ile en yüksek hidrofobik özelliği %8 CS katkılı kompozit göstermiştir. Bunun yanında CS katkılarının Shore D sertlik değerlerinde düşüşe sebep olduğu gözlenmiştir.

Keywords

• Kompozit
• Kalsiyum stearat
• Hidrofobik
• Hidrofilik
• Temas açısı

Investigation of Hydrophobicity in Calcium Stearate-Epoxy Based Composite Materials

Abstract

Hydrophobic surfaces are essential for enhancing the longevity and performance of products across various sectors, particularly in construction, automotive, electronics, and medicine. This characteristic minimizes maintenance expenses by establishing a natural barrier against pollution and corrosion, hence prolonging the lifespan of the materials. Moreover, implementing this technology provides novel methods for attaining energy efficiency and environmental sustainability objectives. This research introduced a composite material formulated with calcium stearate (CS) and epoxy, designed as a coating solution to enhance hydrophobic qualities on surfaces. This technique is intended to create a formulation that integrates the water-repellent characteristics of CS with the structural resilience of epoxy for application on various surfaces. The contact angle of the composite, derived from adding CS into epoxy at concentrations of 1%, 2%, 4%, 6%, 8%, and 10% by weight, was assessed against pure water. Neat epoxy has a hydrophilic structure with a contact angle of 70.5°, whereas the composite containing 8% CS demonstrates the highest hydrophobicity, with a contact angle of 117.5°. Furthermore, adding CS led to a decrease in Shore D hardness values.

Keywords

• Composite
• Calcium stearate
• Hydrophobic
• Hydrophilic
• Contact angle

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