نتایج جستجو برای: composites materials

تعداد نتایج: 472522  

2017
Tomasz Gredes Sandra Schönitz Tomasz Gedrange Lukas Stepien Karol Kozak Christiane Kunert-Keil

BACKGROUND The objective of this study was to investigate the in vivo effect of bioactive composites with poly(lactic acid) (PLA) or polycaprolactone (PCL) as the matrix, reinforced with bioplastic flax fibers, on the surrounding muscle tissue. METHODS Materials of pure PLA and PCL and their composites with flax fibers from genetically modified plants producing poly-3-hydroxybutyrate (PLA-tra...

2017
H. Bhusan Baskey P. Rama Subba Reddy

In the present work, fabrication and evaluation of low density glass – epoxy (LDGE) composites suitable for absorbing minimum 80 per cent of incident microwave energy in 8 GHz to 12 GHz (X-band) is reported. LDGE composites having different densities were fabricated using a novel method of partially replacing conventional S-glass fabric with low density glass (LDG) layers as the reinforcement m...

Journal: :Journal of biomedical materials research. Part B, Applied biomaterials 2008
H Jukola L Nikkola M E Gomes F Chiellini M Tukiainen M Kellomäki E Chiellini R L Reis N Ashammakhi

For bone regeneration and repair, combinations of different materials are often needed. Biodegradable polymers are often combined with osteoconductive materials, such as bioactive glass (BaG), which can also improve the mechanical properties of the composite. The aim of this work was to develop and characterize BaG fiber reinforced starch-poly-epsilon-caprolactone (SPCL) composite. Sheets of SP...

Journal: :Pediatric dentistry 2002
Franklin García-Godoy Kevin J Donly

The improvements in adhesives and composite technology have made resin-based composite resins and polyacid-modified resin-based composites (compomers) very popular as materials to restore primary and permanent anterior and posterior teeth. More conservative preparations can be performed maintaining more tooth structure due to the adhesive properties of the adhesives used with composites and com...

2016
Fengdong Qu Bo He Minghui Yang

Composite materials, which can optimally use the advantages of different materials, have been studied extensively. Herein, hybrid tungsten nitride and oxide (WN/WO3) composites were prepared through a simple aqueous solution route followed by nitriding in NH3, for application as novel sensing materials. We found that the introduction of WN can improve the electrical properties of the composites...

2017
T. Madhusudhan M. SenthiL

The popularity of composite materials usage is increasing due to its superior strength characters racing the traditional materials in strength to weight ratio. The developments of new materials are on the anvil and are growing day by day. In this work, two-body abrasive wear test with different loads and abrading distances were performed at room temperature by using a pin on a disk apparatus to...

2014
Riccardo Casati

Metal matrix composites reinforced by nano-particles are very promising materials, suitable for a large number of applications. These composites consist of a metal matrix filled with nano-particles featuring physical and mechanical properties very different from those of the matrix. The nano-particles can improve the base material in terms of wear resistance, damping properties and mechanical s...

Journal: :Physical review letters 2002
S Torquato S Hyun A Donev

Composite materials are ideally suited to achieve multifunctionality since the best features of different materials can be combined to form a new material that has a broad spectrum of desired properties. Nature's ultimate multifunctional composites are biological materials. There are presently no simple examples that rigorously demonstrate the effect of competing property demands on composite m...

Journal: :Frontiers in bioscience 2013
Jay Russell Meredith Chunming Jin Roger J Narayan Ravi Aggarwal

The unique physical, chemical and mechanical properties of carbon nanotubes make them attractive for a variety of biomedical applications. Carbon nanotubes have been used to modify conventional biomedical materials to enhance mechanical properties, biocompatibility, or to impart other functionalities. New multifunctional composite materials using carbon nanotubes have been developed by combinin...

2011
T. Hasan V. Scardaci P. H. Tan F. Bonaccorso A. G. Rozhin Z. Sun

Polymer composites are an attractive near-term means to exploit the unique properties of single wall carbon nanotubes and graphene. This is particularly true for composites aimed at photonic and optoelectronic applications, where a number of devices have already been demonstrated. These include transparent conductors, saturable absorbers, electroluminescent and photovoltaic devices. Here, we pr...

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