J043034 ナノ組織を有する一方向炭素繊維強化高分子系複合材料のモードIおよびモードII き裂進展特性([J04303]高分子基複合材料の加工と評価(3))

概要

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The high modulus pitch-based carbon fiber reinforced polymer-based composite laminates (CFRPs) with 20-30nm-13-SiC nanoparticle and multi-walled carbon nanotubes (MWCNT) were fabricated using a dry method (nano-structure), hand lay-up, no bleeder vacuum bagging technique and autoclave curing. Prepreg consists of pitch-based carbon fiber (K13C) and cyanate ester matrix (EX-1515). Fiber orientation of the CFRPs was set to [0]24. The fiber volume fraction of the CFRPs was 53.1 vol%. Four different volume fractions of 20-30nm-13-SiC nanoparticle (1.0, 2.0, 5.0 and 10 vol%) and four different volume fractions of MWCNT (1.0, 3.0, 5.0 and 7.0 vol%) were used for the inclusion. The interlaminar fracture tests were performed using a universal testing machine. The crosshead speeds of 1.0 mm/min (mode I) and 0.5 mm/min (mode II) were applied. The mode I and mode II interlaminar fracture toughnesses of unfilled CFRP were 145 and 374 N/m. Regradless of nano-structure types, the mode I and mode II interlaminar fracture toughness decreased with increase in the volume fraction of nano-structures.
一般社団法人日本機械学会の論文
2011-09-11