Tek Taraflı Bindirme Bağlantısıyla Birleştirilen Tabakalı Kompozitlerin Yapıştırma Performansının Nano-Montmorillonit Modifiyeli Epoksi Kullanılarak İyileştirilmesi
Abstract
Nanoparçacıklar üstün performanslarından dolayı polimer matrislerde takviye malzemeleri olarak yaygın şekilde kullanılmaktadır. Bu çalışmada, endüstride yaygın olarak kullanılan modifiye edilerek geliştirilmiş epoksi yapıştırıcılar ele alınmıştır. Bu amaçla yüksek tokluğa sahip yapıştırıcılar elde etmek üzere epoksi reçine içerisine nano-montmorillonit (nano-MMT) ilave edilerek (ağırlıkça % 1-5) ultrasonik karıştırıcı ile karıştırılmıştır. Yapıştırılacak malzeme olarak karbon elyaf takviyeli kompozitler kullanılmış ve bunlar ASTM D5868-01 standartına göre hazırlanmıştır. Nanoparçacıkların düşük konsantrasyonlarda (ağırlıkça % 2) epoksi içerisine eklenmesinin, diğerler oranlardan daha iyi mekanik dayanım sağladığı ve artan nano-MMT ağırlık yüzdesi ile birlikte daha düşük yapışma performansı gösterdiği açık bir şekilde görülmüştür. Test sonuçlarına göre kesme dayanımı % 2 (ag) nano-MMT ilavesi ile önemli ölçüde artmış ve mukavemetlerinde saf epoksi yapıştırıcılara kıyasla % 12.5 artış gözlenmiştir.
References
- 1. Hsiao, K.-T., J. Alms, and S.G. Advani, Use of epoxy/multiwalled carbon nanotubes as adhesives to join graphite fibre reinforced polymer composites. Nanotechnology, 2003. 14(7): p. 791. 2. Kinloch, A., Toughening epoxy adhesives to meet today's challenges. MRS bulletin, 2003. 28(6): p. 445-448. 3. Armstrong, K. and R. Barrett, Care and repair of advanced compositesSociety of Automotive Engineers. Warrendale, USA, 1998. 4. Mansourian‐Tabaei, M., S.H. Jafari, and H.A. Khonakdar, Lap shear strength and thermal stability of diglycidyl ether of bisphenol a/epoxy novolac adhesives with nanoreinforcing fillers. Journal of Applied Polymer Science, 2014. 131(6). 5. Ulus, H., Ö.S. Şahin, and A. Avcı, Enhancement of flexural and shear properties of carbon fiber/epoxy hybrid nanocomposites by boron nitride nano particles and carbon nano tube modification. Fibers and Polymers, 2015. 16(12): p. 2627-2635. 6. Ulus, H., et al., Low-velocity impact behavior of carbon fiber/epoxy multiscale hybrid nanocomposites reinforced with multiwalled carbon nanotubes and boron nitride nanoplates. Journal of Composite Materials, 2016. 50(6): p. 761-770.
Improvement in Adhesive Performance of Single-Lap Joining Composite Lamınates by Using Nano-Montmorillonite Modified Epoxy
Abstract
Nanoparticles have been widely used as reinforcing materials related to polymer matrices for outstanding performance. In this paper expresses modified epoxy adhesives which are enhanced conventional adhesives widely used in industry. In this study, nano-montmorillonite (nano-MMT) (1% to 5% by weight) was mixed into the epoxy resin by using ultrasonication to obtain toughened adhesives. Carbon fiber reinforced composites was used as adherent material and it’s were prepared according to ASTM D5868-01. It has been clearly revealed that the additions of low concentrations of nanosized particles (2 % by weight) performed higher mechanical strength than others and also show lower adhesive performance with increased nano-MMT weight percentage. According to the lap shear test results, shear strength was significantly increased with addition of 2wt% nano-MMT and the strengths of the joints were found to be 12.5% higher than neat epoxy adhesives.
References
- 1. Hsiao, K.-T., J. Alms, and S.G. Advani, Use of epoxy/multiwalled carbon nanotubes as adhesives to join graphite fibre reinforced polymer composites. Nanotechnology, 2003. 14(7): p. 791. 2. Kinloch, A., Toughening epoxy adhesives to meet today's challenges. MRS bulletin, 2003. 28(6): p. 445-448. 3. Armstrong, K. and R. Barrett, Care and repair of advanced compositesSociety of Automotive Engineers. Warrendale, USA, 1998. 4. Mansourian‐Tabaei, M., S.H. Jafari, and H.A. Khonakdar, Lap shear strength and thermal stability of diglycidyl ether of bisphenol a/epoxy novolac adhesives with nanoreinforcing fillers. Journal of Applied Polymer Science, 2014. 131(6). 5. Ulus, H., Ö.S. Şahin, and A. Avcı, Enhancement of flexural and shear properties of carbon fiber/epoxy hybrid nanocomposites by boron nitride nano particles and carbon nano tube modification. Fibers and Polymers, 2015. 16(12): p. 2627-2635. 6. Ulus, H., et al., Low-velocity impact behavior of carbon fiber/epoxy multiscale hybrid nanocomposites reinforced with multiwalled carbon nanotubes and boron nitride nanoplates. Journal of Composite Materials, 2016. 50(6): p. 761-770.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | UMAS 2017 International Engineering Research Symposium |
| Authors | |
| Publication Date | January 31, 2018 |
| Submission Date | November 14, 2017 |
| Acceptance Date | November 15, 2017 |
| Published in Issue | Year 2018 Volume: 5 Issue: 1 |
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