Ultraviyole ışık ve nanopartikül takviyesi altında katman içi hibrit kompozitlerin Charpy darbe dayanıklılığının ölçülmesi

Öz

Bu çalışmada, polimer bazlı katman içi karbon/aramid kompozitlerin düşük hızlı darbe direnci üzerinde nanokil takviyesinin ve UV yaşlanmasının etkileri araştırılmıştır. Kompozitlere ağırlıkça %0 ila %3 arasında değişen konsantrasyonlarda nanokil parçacıkları dahil edilmiştir. Darbe direnci deneysel olarak incelenmiş, hem parçacık takviyesine hem de UV yaşlanmasının etkisine odaklanılmıştır. Charpy darbe testleri, kontrol grubu ile birlikte 450 ve 900 saat UV maruziyetine tabi tutulan numuneler üzerinde gerçekleştirilmiştir. Sonuçlar, ağırlıkça %2 oranında nanokil ile takviye edilen kompozitin, başlangıç ​​seviyesine kıyasla %57,89'luk bir iyileşme ile en yüksek darbe direncini gösterdiğini ortaya koymuştur. 450 saatlik UV maruziyetinden sonra darbe direncinde bir azalma gözlemlenmesine rağmen, 900 saat sonra kısmi iyileşme meydana gelmiştir. Bununla birlikte, UV yaşlanmasının malzemelerin darbe direnci üzerinde genel olarak olumsuz bir etkisi olmuştur. Ek olarak, numunelerin hasar morfolojilerini analiz etmek için taramalı elektron mikroskobu (SEM) kullanılmış ve hasar mekanizmaları hakkında fikir verilmiştir.

Anahtar Kelimeler

• Polimer
• Katman içi kompozitler
• Nanokil
• Charpy darbe testi
• UV yaşlandırma

Measurement of Charpy impact durability of intraply hybrid composites under ultraviolet light and nanoparticle reinforcement

Abstract

This study investigates the effects of nanoclay reinforcement and UV aging on the low-velocity impact resistance of polymer-based intraply carbon/aramid composites. Nanoclay particles, in concentrations ranging from 0% to 3% by weight, were incorporated into the composites. The impact resistance was examined experimentally, focusing on both the particle reinforcement and the impact of UV aging. Charpy impact tests were conducted on specimens subjected to 450 and 900 hours of UV exposure, alongside a control group. The results revealed that the composite reinforced with 2% by weight of nanoclay exhibited the highest impact resistance, with an improvement of 57.89% compared to the baseline. Although a reduction in impact resistance was observed after 450 hours of UV exposure, partial recovery occurred after 900 hours. Nonetheless, UV aging had an overall negative effect on the impact resistance of the materials. Additionally, scanning electron microscopy (SEM) was used to analyze the failure morphologies of the samples, providing insights into the damage mechanisms.

Keywords

• Polymer
• Intraply compsites
• Nanoclay
• Charpy impact test
• UV aging

Kaynakça

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