Plastics: Materials and ProcessingAn introduction to plastics for a wide range of students who need to either gain, improve, or refresh their knowledge of plastic materials and manufacturing. The text discusses both materials and manufacturing processes in a logical presentation. 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, later, a professional reference manual. This edition features more logical organization, dividing the previous tooling and testing chapters into tooling sections that appear within each of the processing chapters and testing sections that appear within each of the plastics properties chapters. It shifts coverage of design to follow the chapters on properties, giving an immediate example of how properties can be used and should allow students to flow more efficiently and effectively through the texts contents without digressions and interruptions. |
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Page 368
... flow = drag flow - pressure flow leakage flow ( 11.1 ) where the drag flow is a measure of the amount of material that is dragged through the extruder by the friction action of the barrel and the screw . The pressure flow is the flow ...
... flow = drag flow - pressure flow leakage flow ( 11.1 ) where the drag flow is a measure of the amount of material that is dragged through the extruder by the friction action of the barrel and the screw . The pressure flow is the flow ...
Page 369
... flow component of the total flow can also be found using classical Newtonian flow analysis . By this analysis , the pressure flow is : Pressure flow = πDH3P sin20 12 mL ( 11.3 ) where D is the diameter of the screw , H is the flight ...
... flow component of the total flow can also be found using classical Newtonian flow analysis . By this analysis , the pressure flow is : Pressure flow = πDH3P sin20 12 mL ( 11.3 ) where D is the diameter of the screw , H is the flight ...
Page 395
... Flow Die body ( Cutaway ) Land After being distributed across the die , the melt flows through gaps between two metal plates and moves toward the front of the die . These plates and gaps are called the land and serve the same purpose as ...
... Flow Die body ( Cutaway ) Land After being distributed across the die , the melt flows through gaps between two metal plates and moves toward the front of the die . These plates and gaps are called the land and serve the same purpose as ...
Contents
Introduction to Plastics | 1 |
Polymeric Materials Molecular Viewpoint | 25 |
Micro Structures in Polymers | 75 |
Copyright | |
22 other sections not shown
Common terms and phrases
added addition advantage allow amount applications atoms blow molding bond called carbon casting cause cavity chapter chemical closed coating common composite compression containing continuous cooling cost created crosslinking crystalline cure cycle degradation dependent determined discussed effect electrons energy especially extruder fibers Figure flow foam force give groups heat higher important improved increase injection molding instance less light liquid lower machine major manufacturing measure mechanical melt metal method mixing molecular weight molecules monomer move nature normal nylon occur operation placed plastic material polyethylene polymer polymerization pressure problem properties reaction reduce reinforcement removed resin resistance result rubber sample screw separate shape sheet shown solid solvent specific step strength stress structure surface Table temperature thermal thermoplastic thermoset thickness toughness typical unit usually viscosity walls