Troubleshooting the extrusion process : a systematic approach to solving plastic extrusion problems

Troubleshooting extrusion problems is one of the most challenging tasks in extrusion operations, requiring a good understanding of the extrusion process and the material properties, good instrumentation, good analysis tools, and a systematic and logical approach. This book addresses all issues cruci...

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Bibliographic Details
Main Authors Noriega E., Maria del Pilar (Author), Rauwendaal, Chris (Author)
Format Electronic eBook
LanguageEnglish
Published Munich : Hanser Publishers, [2019]
Edition3rd edition.
Subjects
Plastics > Extrusion.
elektronické knihy
electronic books
Online AccessFull text
ISBN9781569907764
1569907765
9781569907757
Physical Description1 online resource

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TOC from ObalkyKnih.cz
Table of Contents:
  • Intro
  • Contents
  • Acknowledgments
  • Preface
  • List of Acronyms
  • 1 Requirements for Efficient Troubleshooting
  • 1.1 Instrumentation
  • 1.2 Understanding the Extrusion Process
  • 1.3 Collection and Analysis of Historical Data (Time Line)
  • 1.4 Team Building
  • 1.5 Condition of the Equipment
  • 1.6 Information about the Feed Stock
  • 1.7 Problem-Solving Techniques
  • 1.8 Collection and Interpretation of Extrusion Process Data
  • 1.8.1 Introduction
  • 1.8.2 Vital Signs of the Extrusion Process
  • 1.8.2.1 Melt Pressure
  • 1.8.2.2 Melt Temperature
  • 1.8.2.3 Training
  • 1.8.3 Conclusions
  • 2 Tools for Troubleshooting
  • 2.1 Temperature Measurement Devices
  • 2.2 Data Acquisition Systems
  • 2.2.1 Portable Data Collectors/Machine Analyzers
  • 2.2.2 Fixed-Station Data Acquisition Systems
  • 2.3 Light Microscopy
  • 2.4 Thermochromic Materials
  • 2.5 Thermal Analysis, IR Spectroscopy, and Rheometry
  • 2.5.1 Differential Thermal Analysis and Differential Scanning Calorimetry
  • 2.5.2 Thermogravimetric Analysis
  • 2.5.3 Fourier Transform Infrared Spectroscopy
  • 2.5.4 Thermomechanical Analysis
  • 2.5.5 Torque Rheometry
  • 2.5.6 High Pressure Capillary Rheometry
  • 2.5.7 Rotational Rheometry
  • 2.5.8 Other Thermal Characterization Techniques
  • 2.6 Miscellaneous Tools
  • 2.6.1 Infrared Thermography
  • 2.6.2 The Smartphone
  • 2.6.3 Power Measurements
  • 3 Systematic Troubleshooting
  • 3.1 Upsets versus Development Problems
  • 3.2 Machine-Related Problems
  • 3.2.1 The Drive System
  • 3.2.2 The Feed System
  • 3.2.3 The Heating and Cooling System
  • 3.2.4 How Screw Design Can Affect Extruder Performance
  • 3.2.5 Wear Problems
  • 3.2.5.1 Wear Mechanisms
  • 3.2.5.2 Test Methods for Wear
  • 3.2.5.3 Causes of Wear
  • 3.2.5.4 Solutions to Wear Problems
  • 3.2.5.5 Rebuilding Worn Screws and Barrels
  • 3.2.6 Screw Binding
  • 3.2.6.1 Extrusion of Fluoropolymers
  • 3.2.6.2 The Mechanics of Screw Binding
  • 3.2.6.3 Changes in Clearance Due to Temperature Differences
  • 3.2.6.4 Analysis of Temperature Distribution in Extruder Screws
  • 3.2.6.5 Change in Clearance Due to Compressive Load
  • 3.2.6.6 Results from Analysis
  • 3.3 Polymer Degradation
  • 3.3.1 Types of Degradation
  • 3.3.1.1 Thermal Degradation
  • 3.3.1.2 Mechanical Degradation
  • 3.3.1.3 Chemical Degradation
  • 3.3.2 Degradation in Extrusion
  • 3.3.2.1 Residence Time Distribution
  • 3.3.2.2 Temperature Distribution Simple Calculations
  • 3.3.2.3 Temperature Distribution Numerical Calculations
  • 3.3.2.4 Reducing Degradation
  • 3.4 Extrusion Instabilities
  • 3.4.1 Frequency of Instability
  • 3.4.1.1 High-Frequency Instabilities
  • 3.4.1.2 Screw Frequency Instabilities
  • 3.4.1.3 Low-Frequency Instabilities
  • 3.4.1.4 Very Slow Fluctuations
  • 3.4.1.5 Random Fluctuations
  • 3.4.2 Functional Instabilities
  • 3.4.2.1 Solids-Conveying Instabilities
  • 3.4.2.2 Plasticating Instabilities
  • 3.4.2.3 Melt-Conveying Instabilities
  • 3.4.2.4 Devolatilization Instabilities

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