Mechanical Properties of Reinforced Thermoplastics PDF Download
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Author: D.W. Clegg
Publisher: Springer Science & Business Media
ISBN: 9400941935
Category : Technology & Engineering
Languages : en
Pages : 331
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Book Description
The reinforcement of materials such as mud and clay by hair, straw and vegetable fibres has been long established in man's history, enabling him to improve his buildings and extend his engineering abilities. With the advent of modern synthetic polymers it was rapidly realised that the addition of fibres, flakes and particulate materials to polymer matrices could improve mechanical properties significantly. Fibres and flakes are the most effective and have enabled several polymers with limited properties to compete with long-established metallic materials, reSUlting in cost, weight and processing economies. This is increasingly apparent in the selection of materials for aerospace and road vehicle applications as well as in a multitude of domestic products. Reinforced plastics, both thermosets and thermoplastics, are used in increasingly harsh environments involving elevated temperatures and aggressive conditions. Fibre reinforcement of thermoplastics dominates, and a pattern of increasing replacement of fibre reinforced thermosets by reinforced thermoplastics is emerging. This trend is encouraged by the development of continuous fibre reinforced grades of the newer high-temperature engineering thermoplastics such as polyether ether ketone. The first part of this book reviews the mechanical properties and theories of short fibre reinforcement. The principal reinforcements are reviewed and a separate chapter is devoted to the uses of natural fibres as reinforcements for thermoplastics. This is an interesting and commercially important area, especially for Third World countries v vi Preface where these fibres are grown but are facing severe competition from synthetic fibres in traditional applications such as ropes and matting.
Author: D.W. Clegg
Publisher: Springer Science & Business Media
ISBN: 9400941935
Category : Technology & Engineering
Languages : en
Pages : 331
Get Book Here
Book Description
The reinforcement of materials such as mud and clay by hair, straw and vegetable fibres has been long established in man's history, enabling him to improve his buildings and extend his engineering abilities. With the advent of modern synthetic polymers it was rapidly realised that the addition of fibres, flakes and particulate materials to polymer matrices could improve mechanical properties significantly. Fibres and flakes are the most effective and have enabled several polymers with limited properties to compete with long-established metallic materials, reSUlting in cost, weight and processing economies. This is increasingly apparent in the selection of materials for aerospace and road vehicle applications as well as in a multitude of domestic products. Reinforced plastics, both thermosets and thermoplastics, are used in increasingly harsh environments involving elevated temperatures and aggressive conditions. Fibre reinforcement of thermoplastics dominates, and a pattern of increasing replacement of fibre reinforced thermosets by reinforced thermoplastics is emerging. This trend is encouraged by the development of continuous fibre reinforced grades of the newer high-temperature engineering thermoplastics such as polyether ether ketone. The first part of this book reviews the mechanical properties and theories of short fibre reinforcement. The principal reinforcements are reviewed and a separate chapter is devoted to the uses of natural fibres as reinforcements for thermoplastics. This is an interesting and commercially important area, especially for Third World countries v vi Preface where these fibres are grown but are facing severe competition from synthetic fibres in traditional applications such as ropes and matting.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: M. C. Belazi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: W. V. Titow
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 312
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Book Description
Author: Donald J. Hoffstedt
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
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Book Description
This report describes a study of the influence of low-cost forming methods on the mechanical properties of reinforced thermoplastics. Two tasks comprise the main body of the study; one establishes a relationship between processing parameters (time/pressure/temp-variables) and selected material properties (modulus, flex strength, inter-laminar shear strength); the other determines the effects (measured by the change in material flexural properties) of simulated R & M solvent attack on painted and unpainted laminates. Two secondary tasks complete the study: a review of the available literature on industrial and government-sponsored reinforced thermoplastic materials, material properties, and fabrication methods. The other task required the manufacture of four, 16 in x 20 in, five ply Kevlar 49 style 285 fabric, polysulfane, laminated panels for AMMRC testing. Test data (with respect to processing parameters) indicates a decrease in flexural strength readings coming at the 450 F thermoforming temperature. Modulus values are highest in the 500 F - 550 F thermoforming temperature range. Interlaminar shear strength values also tend to decrease as thermoforming temperature increases. Regarding solvent attack, test data indicates generally higher flexural strength with polyphenylsulfone than with polysulfone sandwich beams. Conversely higher 'EI' values occurred in the polysulfone than in the polyphenylsulfone sandwich beams.
Author: P. G. Kelleher
Publisher: iSmithers Rapra Publishing
ISBN: 9780902348783
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
This report covers semi and non-crystalline thermoplastics, polymer blends and various classes of reinforcing fibres, and the properties which determine their suitability for specific applications. A detailed discussion of the injection moulding of reinforced thermoplastics includes the effect of processing on fibre distribution and breakage. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.
Author: Ban The Vu
Publisher:
ISBN:
Category :
Languages : en
Pages : 230
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Book Description
Author: K O Niska
Publisher: Elsevier
ISBN: 1845694570
Category : Technology & Engineering
Languages : en
Pages : 383
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Book Description
Wood-polymer composites (WPC) are materials in which wood is impregnated with monomers that are then polymerised in the wood to tailor the material for special applications. The resulting properties of these materials, from lightness and enhanced mechanical properties to greater sustainability, has meant a growing number of applications in such areas as building, construction and automotive engineering. This important book reviews the manufacture of wood-polymer composites, how their properties can be assessed and improved and their range of uses.After an introductory chapter, the book reviews key aspects of manufacture, including raw materials, manufacturing technologies and interactions between wood and synthetic polymers. Building on this foundation, the following group of chapters discusses mechanical and other properties such as durability, creep behaviour and processing performance. The book concludes by looking at orientated wood-polymer composites, wood-polymer composite foams, at ways of assessing performance and at the range of current and future applications.With its distinguished editors and international team of contributors, Wood-polymer composites is a valuable reference for all those using and studying these important materials. Provides a comprehensive survey of major new developments in wood-polymer composites Reviews the key aspects of manufacture, including raw materials and manufacturing technologies Discusses properties such as durability, creep behaviour and processing performance
Author: J. B. Farrell
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Qiushi Wang
Publisher:
ISBN:
Category : Carbon fiber-reinforced plastics
Languages : en
Pages : 64
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Book Description
Long fiber reinforced thermoplastics (LFT) possess high specific modulus and strength, superior damage tolerance and fracture toughness and have found increasing use in transportation, military, and aerospace applications. However, one of the impediments to utilizing these materials is the lack of performance data in harsh conditions, especially at elevated temperature. In order to quantify the effect of temperature on the mechanical properties of carbon fiber reinforced thermoplastic composites, carbon fiber PAA composite plates containing 20% and 30% carbon fiber were produced using extrusion/compression molding process and tested at three representative temperatures, room temperature (RT 26°C), middle temperature (MID 60°C) and glass transition temperature (T[subscript g] 0°C). A heating chamber was designed and fabricated for the testing at elevated temperature. As temperature increases, flexural modulus, flexural strength, tensile modulus and tensile strength decrease. The highest reduction observed in stiffness (modulus) values of 30% CF/PAA at T[subscript g] in the 0° orientation is 75%. The reduction values were larger for the transverse (perpendicular to flow direction) samples than the longitudinal (flow direction) samples. The property reduction in 30% CF/PAA is larger than 20% CF/PAA. Furthermore, an innovative method was developed to calculate the fiber content in carbon fiber reinforced composites by burning off the neat resin and sample in a tube furnace. This method was proved to be accurate (within 1.5 wt. % deviation) by using burning off data obtained from CF/Epoxy and CF/Vinyl Ester samples. 20% and 30% carbon/PAA samples were burned off and carbon fiber content was obtained using this method. The results of the present study will be helpful in determining the end-user applications of these composite materials.
