Characterisation of nanoclay dispersion in resin transfer moulded glass/nanoclay/epoxy composites

نویسندگان

  • L. Aktas
  • Y. K. Hamidi
  • M. C. Altan
چکیده

A novel approach for characterisation of nanoclay dispersion in polymeric composites using electron microprobe analysis (EMPA) is presented. Dispersion analysis was performed on three sets of centre-gated discs fabricated by resin transfer moulding. The first set was neat epoxy polymer without reinforcement, whereas the second set comprised 17 vol.-% randomly oriented chopped glass fibre preforms. The last set, in addition to the glass fibre reinforcement, contained 1.7 wt-% Cloisite 25A nanoclay. Upon completion of curing, a sample along the radius of a nanoclay reinforced disc was analysed on a Cameca SX50 electron microprobe analyser. The results from scanning electron micrographs indicated that nanoclay exists in clusters of various sizes ranging from over 10 mm down to submicrometre scale. Nanoclay clusters larger than 1.5 mm, were analysed by digital image processing on the scanning electron micrographs taken along the part’s radius. The dispersion of nanoclay smaller than 1.5 mm was quantified by compositional analysis via wavelength dispersive spectrometry (WDS). Distribution of nanoclay clusters larger than 1.5 mm was found to be approximately constant along the radius with an average value of 1.4% by volume. Similarly, nanoclay clusters smaller than 1.5 mm were found to be distributed evenly with an average value of 0.41 wt-%. To investigate the effect of nanoclay on thermo-mechanical properties, glass transition temperature of moulded samples was measured under oscillatory shear. At the current dispersion state, the glass transition temperature improved 11% with the addition of nanoclay.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Characterization of Nanocomposite Laminates Fabricated from Aqueous Dispersion of Nanoclay

Preparation of E-glass/waterborne epoxy prepregs containing natural nanoclay and properties of their composites are presented. Prepregs were prepared by wetting randomly oriented, chopped glass fiber preforms with aqueous dispersion of EpiRez 3522-W-60 resin, dicyandiamide, 2-methylimidazole and natural nanoclay (Cloisite Naþ). The nanoclay content of the aqueous dispersion was adjusted to yiel...

متن کامل

Fatigue behaviour of nanoclay reinforced epoxy resin composites

Nanoparticle filling is a feasible way to increase the mechanical properties of polymer matrices. Abundant research work has been published in the last number of years concerning the enhancement of the mechanical properties of nanoparticle filled polymers, but only a reduced number of studies have been done focusing on the fatigue behaviour. This work analyses the influence of nanoclay reinforc...

متن کامل

The Effect of Nanoclay on Damaged Areas of Composite and Nanocomposite Laminates

The influence of nanoclay on the impact damage resistance of glass fiber–epoxy composites has been investigated using high-velocity repeated ice impact tests. The incorporation of nanoclay into epoxy enhances the impact resistance of the composites. The impact of ice is a realistic scenario for composite structures such as aircraft fuselages, wing skins and fan blades and it is not a completely...

متن کامل

Damage Assessment in Glass Fiber-Epoxy Matrix Composite under High Velocity Impact of Ice

This study investigated the influence of nanoclay on the impact damage resistance of glass fiber-epoxy composites under high velocity ice impact loading. Addition of 0.5 wt. % nanoclay into epoxy was shown to improve damage resistance compared to composite plates having no nanoclay platelet. The glass fiber-epoxy composites containing nanoclay brought about substantial improvement in ice impact...

متن کامل

Studying the Effect of Montmorillonite Nanoclay on Mechanical Properties and the Amount of Nanoclay on Epoxy Siloxane Hybrid Coatings

Create three-dimensional network of siloxane polymer in the epoxy resin is an appropriate mechanical properties .Dispersion of nanoclay in these coating was prepared by ultrasonication method. Mechanical properties of nanocomposit coatings such as abrasion, hardness and adhesion was increased by addition of nanoclay montmorillonite. Different percentages of nanoclay in coating showed that even ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007