Impact behaviour of glass fribre /epoxy composites with nano-enhanced resin after water exposure

• Autorzy: Landowski M. , Imielińska K.

Identyfikatory

DOI

10.1515/adms-2015-0010

• Języki publikacji: EN

Abstrakty

EN

Impact behaviour of glass fibre /epoxy composites with nano- SiO2 modified resin was studied in terms of low velocity impact after water exposure. Nanocomposites with 1%, 2%, 3% 5% 7% nano-SiO2 (Nanopox- Evonic) were investigated. Peak impact load and impact damage area as a function of nanoparticle contents were compared for dry specimens and for samples exposed to water (0.7 %wt. 1.7% water absorbed) at 1J, 2J 3J impact energies. For unmodified composite peak force was higher than for 3% modified specimens and higher for dry specimens than those exposed to water. Impact damage areas were plotted as a function of water contents for modified and unmodified samples. Failure modes were illustrated using SEM micrographs. Numeropus matrix cracks were the dominating failure mode in dry speciemens both unmodified and the modified. Fibre fracture was observed at 3J impact energy in all dry unmodified samples, however water exposure prevented early fibre fracture in nanocomposites. The proposed energy absorption mechanism is nanoparticles debonding.

Słowa kluczowe

EN

polymer composites; nanocomposites; low-velocity impact

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2015
• Tom: Vol. 15, nr 2(44)
• Strony: 30--35
• Opis fizyczny: Bibliogr. 7 poz., rys., wykr.

Twórcy

autor

Landowski M.

• Gdańsk University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Imielińska K.

• University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

• 1. Reis P.N.B., Ferreira J.A.M., Zhang Z.Y., Benameur T., Richardson M.O.W.: Impact strength of composites with nano-enhanced resin after fire exposure. Composites: Part B, 56 (2014), 290-295.
• 2. Saber-Samandaris S., Khatibi A.A., Basic D.: An experimental study on clay/epoxy nanocomposites produced in a centrifuge: Composites Part B, 38(1), (2007),102-7.
• 3. Hosur M.V., Chowdhury F., Jeelani S.: Low velocity impact response and ultrasonic NDE of woven carbon/epoxy - nanoclay nanocompositres. Journal of Composite Materials, 41 (2007), 2195-212.
• 4. Evonik Industries - Specialty Chemicals. Evonik. http://corporate.evonik.com/ Online access: 20.01.2014.
• 5. Zeng Y., Liu H.Y., Mai Y.W., Du X.S.: Improving interlaminar fracture toughness of carbon fibre/epoxy laminates by incorporation of nano-particles. Composites Part B: Engineering, 43(1) (2012), 90-94.
• 6. Imielińska K., Guillaumat L.: The effect of water immersion ageing on low- velocity impact behaviour of woven aramid-glass fibre/epoxy composites. Composites Science and Technology, 64 (2004), 2271-2278.
• 7. Landowski M., Budzik M., Imielińska K.: Water absorption and blistering of glass fibrereinforced polymer marine laminates with nanoparticle-modified coatings. Journal of Composite Materials, 48(23) (2014), 2805-2813.