Termoplastik ve CFRP Yapıların Birleştirilmesinde Yapıştırıcı Cinsi ve Yüzey Hazırlığının Malzemenin Mekanik Dayanımı Üzerindeki Etkileri

Year 2025, Volume: 13 Issue: 2, 538 - 552, 30.06.2025

Emin Öztürk , Mert Kılınçel , Gülden Kabakçı , Ahmet Kömürcü

https://doi.org/10.29109/gujsc.1625639

Abstract

Kompozit malzemeler, hafiflik, dayanıklılık ve esneklikleriyle birçok endüstride tercih edilmektedir. Havacılık, otomotiv ve uzay endüstrilerinde yaygın olan karbon fiber takviyeli kompozitler, yüksek dayanım ve düşük ağırlıklarıyla dikkat çekmektedir. Yüksek basınçlı hidrojen depolama tanklarının üretiminde de sıklıkla kullanılan bu malzemeler, termoplastik ve termoset yapıların birleşim bölgelerindeki dayanımlarıyla önem kazanmaktadır. Bu çalışmada, karbon fiber epoksi kompozitlerin HDPE malzemelerle birleştirilmesinde yapıştırıcı türü ve yüzey hazırlığının mekanik dayanım üzerindeki etkileri araştırılmıştır. ASTM D5868 standardına uygun çekme testleri yapılmış, SEM analizleriyle hasar mekanizmaları incelenmiştir. Sonuçlar, DP190 yapıştırıcısının 120’lik zımpara ile, DP460’ın 180’lik zımpara ile optimum performans gösterdiğini, epoksinin ise yüksek dayanım gerektiren uygulamalarda öne çıktığını göstermiştir. Bu bulgular, Tip-IV hidrojen tanklarının güvenliğini artırmak ve endüstriyel uygulamalarda daha etkin birleştirme yöntemleri geliştirmek adına önemli bir katkı sunmaktadır.

Keywords

Kompozit, termoplastik, termoset, mekanik dayanım, yapıştırıcı türü, yüzey hazırlığı

Ethical Statement

Gerekli değil

Supporting Institution

Düzce Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü

Project Number

2024.06.05.1466

Thanks

Düzce Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü

Effects of Adhesive Type and Surface Preparation on the Mechanical Strength of Thermoplastic and CFRP Structures

Abstract

Composite materials are widely used in industries for their lightweight, durability, and flexibility. Carbon fiber-reinforced composites are particularly demanded and used in aerospace, automotive, and space industries due to their high strength and low weight. They are also critical in manufacturing high-pressure hydrogen storage tanks, where the interfacial strength between thermoplastic and thermoset materials is crucial. This study investigates the effects of adhesive type and surface preparation on the mechanical strength of carbon fiber-reinforced composites bonded with HDPE. Tensile tests were performed according to ASTM D5868, and SEM analyses were conducted to evaluate damage mechanisms. The results show that DP190 adhesive achieves optimal performance with 120-grit sanding, DP460 performs best with 180-grit sanding, and epoxy is ideal for high-strength applications. These findings contribute to enhancing the safety of Type-IV hydrogen tanks and developing more reliable bonding methods for industrial applications.

Keywords

Composite, thermoplastic, thermoset, mechanical strength, adhesive type, surface preparation

Ethical Statement

Unnecessary

Supporting Institution

Düzce University Scientific Research Projects Coordination Office

Project Number

2024.06.05.1466

Thanks

Düzce University Scientific Research Projects Coordination Office

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