Plastics: Materials and ProcessingAlthough most introductory texts on plastics focus on either materials or on processing, this book discusses the full range of materials, processes, and performance of plastics. This well-structured approach examines materials and the effects of processing from the molecular, micro, and macro levels. While providing a fundamental overview of a broad spectrum of topics, the text's high level of detail makes it valuable as both an introductory text and a professional reference manual. This detail is accomplished without extensive mathematics, so the book can be used by technicians, plastics professionals, and engineers. The book is useful for readers who may want to acquire, improve, or refresh their knowledge of plastic materials and processing. |
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Page 98
... shear rate and is the viscosity . Only fluids which have this resistance to flow ( viscosity ) will be discussed ... shear rate curve is linear , the liquid system is said to be Newtonian and the viscosity is constant . Water is an ...
... shear rate and is the viscosity . Only fluids which have this resistance to flow ( viscosity ) will be discussed ... shear rate curve is linear , the liquid system is said to be Newtonian and the viscosity is constant . Water is an ...
Page 99
... shear occurs , as is done in an extruder , the polymer viscosity will drop greatly . If heat is withdrawn ( cooling ) at the same time that shear is occurring , the viscosity may increase in spite of the shearing forces because energy ...
... shear occurs , as is done in an extruder , the polymer viscosity will drop greatly . If heat is withdrawn ( cooling ) at the same time that shear is occurring , the viscosity may increase in spite of the shearing forces because energy ...
Page 108
... shear stress , G is the shear modulus , and y is the shear strain . The shear strain , and its time derivative , the shear rate , have already been introduced in this chapter in discussing the shears induced in viscous flow . While the ...
... shear stress , G is the shear modulus , and y is the shear strain . The shear strain , and its time derivative , the shear rate , have already been introduced in this chapter in discussing the shears induced in viscous flow . While the ...
Contents
Introduction to Plastics | 1 |
Polymeric Materials Molecular Viewpoint | 21 |
Micro Structures in Polymers | 69 |
Copyright | |
23 other sections not shown
Common terms and phrases
addition adhesive amount applications atoms blow molding called carbon carbon-carbon double bond casting cause chapter chemical coating composites compression molding cooling copolymer cost crosslinking crystalline cure cycle degradation density diameter discussed elastomers electrons energy epoxy extruder fibers fillers film flexible flow foam force free radical HDPE heat hydrogen illustrated in Figure important increase injection molding machine LDPE liquid mandrel manufacturing mechanical properties melt index melting point metal method mixing mold cavity molding process molecular weight molecules monomer nylon occur operation parison phenolics plastic material plate polyesters polyethylene polyimides polymer polymer chains polymerization pressure problem PTFE reaction recycling reinforcements removed resin resistance result rotational molding rotomolding rubber sample screw shape shear sheet shown in Figure solid solvent sprue stiffness strength stress structure surface temperature tensile thermal thermoforming thermoplastic thickness tion transfer molding tubing typical usually vacuum vinyl viscosity