particular in general enhance electronic‚ optical‚ thermal and mechanical properties of polymer matrixes [6-11]. To synthesize electroconductive composites graphite nanoparticles were used as filler material in many insulating polymers‚ for example epoxy‚ polystyrene‚ poly(methyl methacrylate)‚ thermoplastic polyurethane and many others [8]. Such composites attracted significant attention
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destructive test‚ because we aren’t allowed to destruct the entire structure in the name of testing. Roadware 10 Minute Concrete Mender™ "Roadware needle tip crack injection costs less to install and is more effective than pressure applied epoxy injection methods." according to top concrete repair contractors. "We can get in‚ permanently repair the cracks‚ and get out in the same time it use to take just to install the old injection ports." Evaluation and Repair of Fire-Damaged
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6. POLYMERS and elastomers Lecture no. 1 Objectives: Definition‚ Functionality‚ Classification of high polymers – based on origin‚ molecular structure. 6.1.1. DEFINITION: The word polymer is derived from the two greek words‚ poly and meros‚ meaning many and parts or units respectively. Polymers are macro molecules formed by linking smaller molecules repeatedly‚ called monomers. Examples: Polythene is formed by linking a large number of ethene (or ethylene) molecules together
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Introduction The main purpose of root canal treatment is the elimination of microorganism from root canal system (1‚2). Microorganisms and their byproducts are regarded as the primary etiological factors of periapical diseases and pulpal necrosis (3‚4‚5). Microbial reduction obtained by mechanical instrumentation‚ irrigation‚ using intracanal medicaments and adequate filling of root canal (6). Failure of the root canal treatment is the result of persisting microorgansims in the root canal system
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plastic-def. A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass‚ but they often contain other substances. They are usually synthetic‚ most commonly derived from petrochemicals‚ but many are partially natural. Plastics Characteristics Plastics are made from fossil fuels--petroleum‚ natural gas‚ coal--‚ wood and some plant materials‚ air‚ water and sometimes other common materials
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Customers today demand higher quality and durability from the products they buy. Not only do they expect these products to perform well‚ but they want the finish to look good and resist corrosion for a much longer period of time. Powder coating is different from painting. There are no liquids or solvents. Therefore‚ it is the ultimate coating for environmental friendliness. Being dry‚ the powder overspray can be reclaimed for very high application efficiency. It uses heat to convert its state from
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Tin Stripping Q.C. Mechanical Operation * Sheet Cutting :- Measure the size of PCB from film or Artwork. L W Panel Sz. * Board Area PCB Sz. Boarder Area * Laminates or Copper Sheet :1. Glass Epoxy 2. Paper fenolic 3.Teflon 4. Ceramick (CEM) * Glass Epoxy :- Thickness S/S 1.6 35/0 Cu Thickness Insulating Material thickness D/S 0.8-18/18 1.6-18/18
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ACL INDUSTRIAL SALES BUSINESS NAME:ACL INDUSTRIAL SALES(Formerly Steelworks Industrial Sales) | TELEHONE NUMBER:(02) 413-7422 / 412-2569 / 415-2094 / 4141874TELE/FAX NUMBER:(02) 732-8984 / 732-9053 / 732-9206 / 732-8605 743-2506 | BUSINESS ADDRESS:#6 Macopa Street Brgy.St. Peter Banawe Quezon City | E-MAIL ADDRESS:acl_industrial@yahoo.com.ph | YEARS IN BUSINESS(12) TWELVE | FORM OF BUSINESSSingle Prop. | NATURE OF BUSINESSTrader/Importer | PRODUCTS OFFERED:Hardware
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POLYMER COCNCRETE 1. Introduction Despite being thought of as a modern material‚ concrete has been in use for hundreds of years. The word concrete comes from the Latin concretus‚ which means “mixed together” or compounded. Concrete is an extremely popular structural material due to its low cost and easy fabrication. Concrete is made up of sand or stone‚ known as aggregate‚ combined with cement paste to bind it. Aggregate can be of various sizes. It is broadly categorized as fine (commonly
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CHAPTER 1 INTRODUCTION 1.1 Introduction of Research Steel-reinforced concrete is a widely used structural material. The effectiveness of the steel reinforcement depends on the bond between the steel reinforcing bar and the concrete. Reinforced concrete is a composite material in which concrete ’s relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength and ductility. The reinforcement is usually‚ though not necessarily
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