Polyoxymethylene Handbook

Name: Polyoxymethylene Handbook | Structure, Properties, Applications and their Nanocomposites
Brand: Wiley-Scrivener
Price: 177.99 EUR
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Structure, Properties, Applications and their Nanocomposites

Sigrid Lüftl Visakh P. M.Sarath Chandran(Autor*in)

Wiley-Scrivener (Verlag)

Erschienen am 7. März 2014

462 Seiten

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978-1-118-91443-4 (ISBN)

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Inhalt

Cover
Title Page
Copyright Page
Contents
Preface
1 Polyoxymethylene: State of Art, New Challenges and Opportunities
1.1 Scope
1.2 History
1.3 Commercial Significance
References
2 Polymerization and Manufacture of Polyoxymethylene
2.1 Introduction
2.2 Monomers
2.2.1 Formaldehyde
2.2.2 Trioxane
2.3 Comonomers
2.3.1 Ethylene Oxide
2.3.2 Propylene Oxide
2.3.3 Tetrahydrofuran
2.3.4 Dioxane Derivates
2.3.5 Branching Agents
2.3.6 Chain Transfer Agents
2.4 Polymerization and Fabrication
2.4.1 Anionic Polymerization
2.4.2 Cationic Polymerization
2.4.3 Catalysts in Detail
2.4.4 Undesired Side Reactions
2.4.5 Terminators
2.4.6 Homopolymers
2.4.7 Copolymers
2.4.8 Removal of Residual Monomers
2.4.9 Special Compositions
2.5 Special Additives
2.5.1 Antioxidants
2.5.2 Impact Modifiers
References
3 Polyoxymethylene Additives
3.1 Introduction
3.2 Antioxidants
3.2.1 Strategy of Stabilization to Inhibit Thermal Oxidation
3.2.2 Case of Hydroperoxide Reducers in POM
3.2.3 Case of Phenolic Antioxidants in POM
3.3 Compounds Reacting with Secondary Reaction Products
3.4 UV Stabilization
3.4.1 Generality on UV Stabilization
3.4.2 Performances of UV Stabilizers in POM
3.5 Impact Modifier
3.6 Nucleating Agent
3.6.1 Theoretical Recall on Crystallization of Polymers
3.7 Pigments and Dyes
3.7.1 Mineral Pigments
3.7.2 Organic Pigments and Dyes
3.7.3 Conclusion
3.8 Flame Retardants
3.8.1 Principles of Combustion
3.8.2 Strategies for Improving Flame Resistance
3.8.3 Examples of Flame Retardants in POM
3.9 Antistatic Agents
3.10 Lubricating Agents
3.11 Fillers
3.11.1 Effect of Fillers on Thermal Properties
3.11.2 Effect of Fillers on Mechanical Properties
3.12 Processing Aids
References
Appendix 3.1: List of Stabilizers
4 Polyoxymethylene Processing
4.1 Introduction
4.2 Injection Molding
4.3 Melt Extrusion
4.4 Solid-State Extrusion
4.5 Extrusion Assisted by Supercritical Carbon Dioxide
4.6 Blow Molding
4.7 Others Methods
4.7.1 Melt Blowing
4.7.2 Compression Molding
4.7.3 Rolling
4.7.4 Sintering
4.7.5 Spinning
4.8 Highly Oriented Products
4.9 Recycling of Production Waste
4.10 Finishing and Machining of POM
4.11 Conclusions
References
5 Polyoxymethylene Applications
5.1 Introduction
5.2 Automotive Industry, Mechanical Engineering
5.3 Electrical and Electronic Industry, Fancy Goods
5.4 Medical Applications
5.5 Future Trends
References
6 Structure and Morphology of Polyoxymethylene
6.1 Introduction
6.2 Crystalline Structure of POM: Orthorhombic and Hexagonal Phases
6.3 Crystal Structure Determination
6.4 Morphology of Orthorhombic and Hexagonal POM
6.5 Morphology of Rubber-Modified POM
6.6 Structure-Properties Relationships
References
7 Crystal Structure and Crystallization Behavior of POM and its Microscopically-Viewed Relation with the Physical and Thermal Properties on the Basis of X-ray Scattering, Vibrational Spectroscopy and Lattice Dynamical Theory
7.1 Introduction
7.2 Crystal Structure Analysis of POM
7.2.1 Synchrotron X-ray Diffraction Analysis
7.2.2 Wide-Angle Neutron Diffraction Analysis
7.2.3 (29/16) Helical Model
7.2.4 Electron Diffraction of Whisker
7.3 Vibrational Spectra of POM
7.4 Structural Evolution in Isothermal Crystallization
7.5 Microscopically-Viewed Mechanical Property of POM
7.6 Conclusions
Acknowledgements
References
8 Physical Properties of Polyoxymethylene
8.1 Introduction
8.2 Density
8.3 Hardness
8.4 Heat Capacity
8.5 Melt Flow
8.5.1 Tribological Properties
8.5.2 Whiskers
8.6 Water Absorption
8.7 Gas Permeability
8.7.1 Permeability to Fuels
8.8 Specific Absorption
8.8.1 Polychlorinated Biphenyls
References
9 POM Mechanical Properties
9.1 Short Term Properties
9.1.1 Elastic Properties
9.1.2 Properties at Failure
9.2 Long-Term Properties
9.2.1 Fatigue Properties
9.2.2 Chemical Degradation
9.3 Conclusion
Acknowledgement
References
10 Thermal Properties and Flammability of Polyoxymethylene
10.1 Glass Transition and Melting Temperature
10.2 Coefficient of Linear Thermal Expansion
10.3 Thermal Conductivity and Specific Heat
10.4 HDT and Vicat
10.5 Thermo-Oxidative Degradation Behavior and Aging
10.6 Testing of Long-Term Heat Aging
10.7 Flammability
10.8 Hot Sterilization
References
11 Chemical Resistance of Polyoxymethylene
11.1 Intoduction
11.2 Degradation and Oxidation Mechanisms in POM
11.2.1 Depolymerization
11.2.2 Acidolysis
11.2.3 Thermal Oxidation
11.2.4 Photothermal Oxidation
11.2.5 Conclusion on Polyacetal Degradation Mechanims
11.3 Resistance to Chemicals
11.3.1 Theoretical Recall on Polymer Interaction with Solvents
11.3.2 Typical Resistance of POM in Presence of Alkalis, Acids or Solvents
References
12 The Electrical Response of Polyoxymethylene (POM)
12.1 Introduction
12.2 Interactions between POM and Electromagnetic Waves
12.2.1 Dielectric Response of POM
12.2.2 Effects of Water on the Dielectric Response of POM
12.2.3 Dielectric Properties of POM-Based Composites
12.3 Interactions between POM and Arc Plasma
12.3.1 Low Energy Applications
12.3.2 High Energy Applications
References
13 Electrical and Optical Properties of Polyoxymethylene
13.1 Introduction
13.2 Electrical Properties
13.2.1 Conductivity
13.2.2 Dielectric Properties
13.2.3 Dielectric Loss Factor
13.2.4 Microwave Dielectric Measurements
13.2.5 Resistivity
13.2.6 Applications - Electrical Properties
13.3 Optical Properties
References
14 Nanocomposites of Polyoxymethylene
14.1 Introduction
14.2 Preparation and Structure of POM Nanocomposites with Different Nanoadditives
14.2.1 Methods of Fabrication of POM-Based Nanocomposites
14.2.2 Modification of Nanoparticles Towards Preparation of POM-Based Nanocomposites
14.2.3 Preparation and Structure of POM-Based Nanocomposites
14.3 Properties of Polyoxymethylene-Based Nanocomposites
14.3.1 Solid-State Phase Transitions and Polymer Morphology in Polyoxymethylene Nanocomposites
14.3.2 Mechanical Behavior of POM-Based Nanocomposites
14.3.3 Thermal Stability of POM Modified with Nanofiller
14.3.4 Tribological Properties and Wear Resistance of POM-Based Nanocomposites
14.3.5 Electrical Conductivity of Polyoxymethylene-Based Nanocomposites
14.3.6 Rheological Properties of Polyoxymethylene Nanocomposites
14.4 POM Blends as Matrices in Nanocomposite Materials
14.5 POM Nanostructures - Electrospun POM Nanofibers
14.6 Applications of POM-Based Nanocomposites and Future Trends
14.7 Conclusions
List of acronyms
References
15 Future, Environmental Impact and Suppliers
15.1 Introduction
15.2 Developments and Specialty Resins
15.2.1 Performance Improvement by Copolymerization of Polyoxymethylene and Polymer Alloy Technology
15.2.2 Technology for Improving Heat Stability
15.3 Safety (Regulation and Approvals)
15.4 Environmental Impact
15.5 Suppliers and Commercial Grades
15.6 Future
References
Index

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