کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577998 1514813 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of nanoparticle inclusion on the tensile and mode I fracture properties of polyimides
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The effect of nanoparticle inclusion on the tensile and mode I fracture properties of polyimides
چکیده انگلیسی

Polyimide nanocomposites were fabricated using a combination of rotation/revolution mixing, layer-by-layer deposition and autoclave curing techniques. Seven different types of nanoparticles (25 nm C, 20–30 nm β-SiC, 130 nm β-SiC, 10 nm SiOx (x = 1.2–1.6), 80 nm SiO2, 11 nm γ-Al2O3 and 40–80 nm γ-Al2O3) and four different particle volume fractions (0.5, 1, 5 and 10 vol%) were used for the inclusion.The effect of nanoparticle inclusion on the tensile properties and mode I fracture toughness was also investigated. The tensile modulus of the nanoparticle-filled polyimides was improved by the nanoparticle inclusion and increased with increasing volume fraction of the nanoparticles. No large differences in the tensile strength were observed for the nanoparticle-filled and unfilled polyimides. The mode I fracture toughness of the nanoparticle-filled polyimides was improved by C, β-SiC, SiOx (x = 1.2–1.6), SiO2 and γ-Al2O3 nanoparticle inclusion and the maximum mode I fracture toughness, indicated by the critical stress intensity factor, was observed at approximately 5 vol% nanoparticle content for each type of nanoparticle-filled polyimide.


► Seven different types of nanoparticles and four different particle volume fractions were used for the inclusion.
► The tensile modulus and mode I fracture toughness of the nanoparticle-filled polyimides were much improved by nanoparticle inclusion.
► No large difference in the tensile strength was observed for nanoparticle-filled and unfilled polyimides.
► The fracture surface of nanoparticle-filled polyimides was more complex than that of unfilled polyimide.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 530, 15 December 2011, Pages 357–366
نویسندگان
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