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, the compressive and flexural strength of cement mortar with nano-SiO 2 or nano-Fe 2 O 3 measured at the 28th day are both higher than those of the blank group [ 4 ]. Compared with microscale monolithic alumina ceramics, nano-Al 2 O 3 ceramics have higher flexural strength [ 5 ]. Mechanical properties refer to the mechanical characteristics of materials under different environments and various external loads. Different materials exhibit different mechanical properties. As for the traditional materials, the mechanical properties of metals generally consist of ten

References [1] Jose M.V., Steinert, B.W., Thomas, V., Dean, D.R., Abdalla, M.A., et al. (2006). Morphology and mechanical properties of Nylon 6/MWNT nanofibres. Polymer, 48 (2007),1096-1104. [2] Pant, H., R., Bajgai, M., P., Chuan Yi, Nirmala, R., Ki Taek Nam, et al. (2010). Effect of succesive electrospinign and the strendht of hydrogen bond on the morphology of efectrospun nylon-6 nanofibres. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 370(1-3), 87-94. [3] Heikkila P., Harlin, A. (2008). Parameter study of electrospinning of polyamide-6

1 Introduction Compared to the properties of conventional composites, the properties of polymeric materials are enhanced significantly by the addition of nanofillers, without compromising their process ability, inherent mechanical properties and light weights. Polymer nanocomposites have a unique combination of mechanical, thermal and electrical properties [1, 2], which are dependent on the morphology, the homogenous dispersion, the types of fillers and matrices, and also the interface bonding between the matrix and the reinforcements [3, 4]. These types of

1 e-Polymers 2009, no. 110 http://www.e-polymers.org ISSN 1618-7229 Physical and mechanical properties of sulfonated aromatic copolyimide membranes Ahmad Rabiee,1* Shahram Mehdipour-Ataei1 1*Iran Polymer and Petrochemical Institute; P.O. Box 14965/115; Tehran, Iran; tel: +9821 44580067; fax: +9821 44580023; e-mail: a.rabbii@ippi.ac.ir (Received: 08 December, 2008; published: 22 September, 2009) Abstract: Physical and mechanical properties of four series of chemically and thermally stable sulfonated copolyimides as ion

1 Introduction Carbon nanofibers (CNFs) are ideal candidates for high performance composites because of their excellent mechanical properties and thermal stabilities ( 1 ), ( 2 ), ( 3 ), ( 4 ). CNFs can be simply produced by electrospinning followed by thermal treatments from different kinds of polymer precursors, such as polyacrylonitrile (PAN) and its copolymers ( 5 ), ( 6 ), ( 7 ), ( 8 ), ( 9 ), poly(vinyl alcohol) (10 ), ( 11 ), polybenzimidazole (PBI) (12 ), ( 13 ), polyamic acid ( 14 ), ( 15 ), ( 16 ), polybisbenzimidazobenzophenanthroline-dione (BBB

materials such as poly(vinyl chloride) (PVC), polyvinylidene fluoride (PVDF), poly(tetrafluoroethylene) (PTFE), or silicone (see, e.g., refs. [2, 3]). Additionally, it is possible to use architectural fabrics with special features, e.g., high light transmission, surface coating with a self-cleaning, etc. Figure 1 Visualization of the coated woven fabric. The proper determination of mechanical properties in material modeling has a fundamental impact on the increase in analysis precision and on the economical design (without large safety factors) based on the advantages of

1 Introduction The correlation between clays and mechanical characteristics of claystone has been studied by many researchers [ 1 , 2 , 3 ] but the effect of the type of clay minerals on mechanical properties of rocks is poorly understood. However, change in the physical properties of the clastic sedimentary rocks can have a profound influence on their mechanical properties. They can substantially jeopardize the strength of these rocks and thereby their suitability for various engineering applications. Therefore, the minerals, especially clay minerals, pose

incorporated into epoxy resin to improve its ductility as well as other mechanical properties [ 1 , 2 ]. As one of the most eminent transition-metal dichalcogenides materials, molybdenum disulfide (MoS 2 ) has a unique structure, good thermal conductivity, excellent mechanical flexibility, and self-lubricating property. Thus, MoS 2 nanoparticles were commonly incorporated into epoxy resin to make epoxy coatings have better tribological properties under complex and harsh working conditions [ 3 , 4 , 5 ]. Recently, many researchers have focused on hybrids composed of MoS 2

a neat polymer matrix sample. Because of this, reinforcement was non-existent in the transverse direction [6–10]. This initial attempt was carried out to prepare the plain unidirectional bagasse mat to study the effect of aligned fiber reinforcement. Furthermore, there was no literature available on unidirectional aligned bagasse fiber-reinforced vinyl ester (BFRVE) composite laminates. Composite plates were fabricated for the five different fiber contents by changing the number of layers from one to five in VE resin matrix and their mechanical properties were

1 Introduction As one kind of the available thermosetting resins, with the role of a heating or curing agent, unsaturated polyester resin (UPR) forms an insoluble and infusible network polymer which cannot meet most of the requirements because of its poor mechanical properties. With the development of strengthening and toughening of the polymer composite, particle reinforcement by nano-mineral materials has become a new field of development and has got widespread attention from scholars at home and abroad. Wang et al. [1] researched on glass fiber reinforced