Effect of hydrothermal aging on the mechanical properties of nanocomposite pipes

Abstract

The aim of this study is to minimize the decrease in the mechanical properties of materials exposed to environmental conditions by adding nano additives, thereby increasing service life. It has been reported in the literature that boron nitride nanoparticles (BNNP), a multi-walled carbon nanotube (MWCNT), and hybrid (MWCNT + BNNP) nano additives improve the mechanical properties of FRPs and increase their lifetime. For this reason, in this study, filament wound BNNP, MWCNT, and MWCNT + BNNP hybrid reinforced carbon fiber epoxy composite pipes (CFRPs) were produced with (± 55°)4 configurations and 8 layers. Then, composite pipes were exposed to the hydrothermal aging process in distilled water at 80 °C for 7, 14, and 21 days in order to examine the effects of hot water absorption behavior on mechanical properties such as hardness, and density. The hardness and density measurements were realized in accordance with ASTM standards. The hardness, and density properties of water exposed BNNP, MWCNT, and MWCNT + BNNP hybrid reinforced and non-reinforced CFRPs were examined and compared with unexposed specimens according to ASTM standards. As a result of this study, it was observed that the hardness and density values of the specimens exposed to aging reinforced with nano-sized material were even higher than the hardness and density values of the neat epoxy unexposed to aging. Consequently, although water absorption caused a loss in the mechanical properties of the material, the negative effects of water absorption were minimized thanks to the added nano additives.

Influence of B4C on enhancing mechanical properties of AA2014 aluminum matrix composites

“…The studies conducted in this direction aim to provide the properties that the materials cannot have by combining more than one material with various methods, that is, by producing composite materials. 1,2 With the production of composite materials, it is possible to obtain materials with desired mechanical, thermal, and electrical properties. 3,4 Metal matrix composites (MMC) constitute a primary place in composite material types.…”

Effects of seawater corrosion environment on the impact behavior of multi-walled carbon nanotube and SiO2 reinforced basalt/epoxy hybrid nanocomposites

“…40 Therefore, matrix degradation, decrease in matrix fiber interface strength, delamination damage, and damage to the fiber surface carry out in composites. 2,41,42 The SiO 2 nanoparticle filled basalt/ epoxy composites were less affected by the seawater corrosion environment. This result indicates that SiO 2 nanoparticles form a good fiber-matrix interface in basalt-fiber reinforced composites.…”

Cam Fiber Sandviç Kompozitlerin Düşük Hızlı Darbe Mukavemetinin Nano Parçacık Takviyeli Yapıştırıcı Kullanılarak Artırılması

“…Bu alanda yapılan son çalışmalar nano katkılı yapıştırıcıların endüstriyel uygulamalarda kullanımının arttığını ve yapıştırılan yüzeyler arasında kenetlenmeyi iyileştirdiğini göstermektedir [10,[26][27][28][29]. Nano partiküller yapılarında barındırdıkları olağanüstü mekanik özellikler sayesinde, nanoyapıştırıcılar ve nanokompozitleri geliştirmek için yenilikçi bir alan oluşturmuşlardır [21,30,31]. Nano partikül türlerinden biri olan ÇCKNT'ler üstün tribolojik, termal ve mekanik özellikleri nedeniyle birçok mühendislik uygulamasında kullanım için eşine az rastlanan bir malzeme türü olarak gösterilmektedir [21].…”