| |
|
|
|
|
|
|
|
|
1. |
Record Nr. |
UNINA9910479854303321 |
|
|
Titolo |
Essays in the history of mathematics / / Arthur Schlissel, editor |
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Providence, R.I., USA : , : American Mathematical Society, , 1984 |
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Descrizione fisica |
|
1 online resource (80 p.) |
|
|
|
|
|
|
Collana |
|
Memoirs of the American Mathematical Society, , 0065-9266 ; ; volume 48, number 298 (March 1984) |
|
|
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
|
|
Soggetti |
|
Mathematics - History |
Electronic books. |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Note generali |
|
"The papers in this volume represent the talks given at the special session on the history of mathematics held at the annual meeting of the American Mathematical Society, San Francisco, California, January 7-11, 1981"--Introd. |
"March 1984." |
"Volume 48, number 298 (end of volume)." |
|
|
|
|
|
|
|
|
Nota di bibliografia |
|
Includes bibliographical references. |
|
|
|
|
|
|
Nota di contenuto |
|
""Table of Contents""; ""Introduction""; ""Reminiscences about the origins of linear programming""; ""Functional analysis in the theory of partial differential equations""; ""Some influences of population biology on mathematics""; ""PDE generalizations of the Sturm comparison theorem""; ""Stochastic theory of epidemics�continuing efforts to achieve realism""; ""The origins of turning point theory"" |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Record Nr. |
UNINA9911018918803321 |
|
|
Autore |
Muralisrinivasan Natamai Subramanian |
|
|
Titolo |
Thermoforming : Processing and Technology |
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Newark : , : John Wiley & Sons, Incorporated, , 2025 |
|
©2024 |
|
|
|
|
|
|
|
|
|
ISBN |
|
9781119555889 |
1119555884 |
9781119555896 |
1119555892 |
|
|
|
|
|
|
|
|
Edizione |
[2nd ed.] |
|
|
|
|
|
Descrizione fisica |
|
1 online resource (342 pages) |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
Thermoforming |
Polymer engineering |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Nota di contenuto |
|
Cover -- Series Page -- Title Page -- Copyright Page -- Contents -- Preface -- Chapter 1 Introduction -- Chapter 2 Polymers -- 2.1 Introduction -- 2.2 Physics and Chemistry of Polymers -- 2.3 Natural Polymers -- 2.4 Synthetic Polymers -- 2.5 Polymerization Methods -- 2.5.1 Addition Polymerization -- 2.5.2 Condensation Polymerization -- 2.6 Polymer Molecules in Thermoforming -- 2.7 Classification -- 2.8 Primary Classification -- 2.8.1 Homopolymers -- 2.8.2 Copolymers -- 2.8.2.1 Block Copolymers -- 2.8.2.2 Diblock Copolymers -- 2.8.2.3 Multiblock Copolymers -- 2.8.3 Alternating Copolymers -- 2.8.4 Random Copolymers -- 2.8.5 Graft Copolymers -- 2.8.6 Impact Copolymers -- 2.9 Secondary Classification -- 2.9.1 Thermoplastics -- 2.9.2 Thermosetting Plastics -- 2.10 Distinction Between Thermoplastics and Thermosetting -- 2.11 General Classification -- 2.11.1 Commodity Plastics -- 2.11.2 Engineering Plastics -- Chapter 3 Thermoplastics -- 3.1 Introduction -- 3.2 Polyolefins -- 3.3 Polyethylene -- 3.3.1 Low Density Polyethylene (LDPE) -- 3.3.2 High-Density Polyethylene (HDPE) -- 3.3.3 Linear-Low-Density Polyethylene (LLDPE) -- 3.4 Polypropylene -- 3.5 Polystyrene (PS) -- 3.6 High-Impact Polystyrene (HIPS) -- 3.7 Polyvinylchloride -- 3.8 Acrylonitrile- |
|
|
|
|
|
|
|
|
|
Butadiene-Styrene (ABS) -- 3.9 Polyethylene Terephthalate (PET) -- 3.10 Acrylics -- 3.10.1 Polymethylmethacrylate (PMMA) -- 3.11 Nylon 6 (PA6) -- 3.12 Nylon 66 (PA66) -- 3.13 Polyoxymethylene (POM) -- 3.14 Polycarbonate (PC) -- 3.15 Poly(ether-ether-ketone) (PEEK) -- 3.16 Polyphenylene Oxide (PPO) -- 3.17 Polybutylene Terephthalate (PBT) -- 3.18 Liquid Crystalline Polymers -- 3.19 Cyclic Olefin Copolymer (COC) -- 3.20 Plastic Foams -- 3.21 Thermoplastic Elastomers -- 3.21.1 Thermoplastic Olefin (TPO) -- 3.21.2 Thermoplastic Urethane (TPU) -- 3.22 Thermoplastic Composites (TCs) -- 3.23 Bioplastics. |
3.23.1 Polylactic Acid (PLA) -- 3.23.2 Poly(Butylene Succinate) (PBS) -- Chapter 4 Properties of Thermoplastic Sheet Materials -- 4.1 Introduction -- 4.2 Polymer Characteristics -- 4.3 Polymer Morphology -- 4.3.1 Amorphous Polymers -- 4.3.2 Semi-Crystalline Polymers -- 4.3.3 Crystalline Polymers -- 4.3.4 Amorphous Versus Semi-Crystalline Polymers -- 4.4 Molecular Structure -- 4.5 Molecular Weight -- 4.6 Molecular Weight Distribution -- 4.7 Melt Flow Index -- 4.8 Glass Transition Temperature -- 4.9 Melt Temperature -- 4.10 Heat Deflection Temperature (HDT) -- 4.11 Crystallization Temperature -- 4.12 Melt Strength -- 4.13 Rheological Properties -- 4.14 Viscoelastic Behavior -- 4.15 Coefficient of Friction -- 4.16 Thermal Conductivity -- 4.17 Thermal Diffusivity -- 4.18 Specific Heat -- 4.19 Stress -- 4.20 Strain Hardening -- 4.21 Plastic Strain -- 4.22 Tensile Strain -- 4.23 Tensile Yield Stress -- 4.24 Deformation -- 4.25 Stress Deformation -- 4.26 Modulus and Stiffness -- 4.27 Sag -- 4.28 Toughness -- 4.29 Effect of Additives -- Chapter 5 Thermoforming Technology -- 5.1 Introduction -- 5.2 Thermoplastic Sheet Materials -- 5.3 Mechanical Characteristics -- 5.4 Thermoformability -- 5.5 Thermoforming Cycle -- 5.6 Draw Ratio -- 5.7 Processing Window -- 5.8 Mold -- 5.9 Mold Design -- 5.10 Heating Elements -- 5.10.1 Infrared Heaters -- 5.10.2 Flash Heaters -- 5.10.3 Forced Convection Hot Air Heating -- 5.10.4 Other Heaters -- 5.11 Plug Material -- 5.12 Plug Design -- 5.13 Product Design -- 5.14 Clamping -- 5.15 Process Control -- 5.16 Process Variables -- 5.17 Thermal History -- 5.18 Pre-Drying -- 5.19 Plug Movement -- 5.20 Plug Speed -- 5.21 Sheet Temperature -- 5.22 Mold Temperature -- 5.23 Forming Temperature -- 5.24 Wall Thickness Distribution -- 5.25 Sheet Deformation -- 5.26 Heat Transfer -- 5.27 Effects of Temperature Distribution. |
5.28 Effect of Drawing -- 5.29 Effect of Frictional Force -- 5.30 Effect of Plug-Assist/Vacuum -- 5.31 Effect of Applied Pressure -- 5.32 Effect of Heating -- 5.33 Effect of Cooling -- 5.34 Rate of Deforming -- 5.35 Rate of Sagging -- 5.36 Effect of Air Temperature -- 5.37 Effect of Air Pressure -- 5.38 Effect of Crystallinity and Morphology -- 5.39 Processing Technology -- 5.39.1 Heating Stage -- 5.39.2 Sheet Heating -- 5.39.3 Forming Stage -- 5.39.4 Draw Ratio -- 5.39.5 Cooling Stage -- 5.40 Thermoforming-Processing of Thermoplastic Sheet Material -- 5.41 Methods of Thermoforming -- 5.42 Low-Pressure Forming Technology -- 5.42.1 Basic Vacuum Forming -- 5.43 Plug-Assist Thermoforming -- 5.43.1 Plug-Assist Vacuum Forming -- 5.44 Pressure Forming -- 5.44.1 Plug Assist-Air Pressure Thermoforming -- 5.45 Snapback Thermoforming -- 5.46 Drape Forming -- 5.47 Matched Mold Forming -- 5.48 Foam Sheet Forming -- 5.49 In-Line Thermoforming -- 5.50 Industrial Versus Laboratory Thermoforming -- Chapter 6 Troubleshooting Thermoforming -- 6.1 Introduction -- 6.2 Product Quality Analysis -- 6.3 Product Quality -- 6.4 Product Defects -- 6.5 Fundamental and Inherent Defects -- 6.6 Troubleshooting -- 6.6.1 Blisters or Bubbles -- 6.6.2 Webbing/Bridging -- 6.6.3 Excessive Sheet Sag -- 6.6.4 Pinhole or |
|
|
|
|
|
|
|
|
|
Rupturing -- 6.6.5 Uneven Sag -- 6.6.6 Part Sticks to the Mold -- 6.6.7 Stretch Marks -- 6.6.8 Nipple on the Mold Side of the Thermoformed Part -- 6.6.9 Pock Marks -- 6.6.10 Poor Wall Thickness -- 6.6.11 Uneven Edges -- 6.6.12 Tearing Sheet When Forming -- 6.6.13 Bad Definition at the Edge -- 6.6.14 Glossy Spots -- 6.6.15 Warpage -- 6.6.16 Cracking in Corners -- 6.6.17 Raised Corners -- 6.6.18 Surface Marking -- 6.6.19 Corners Too Thin -- 6.6.20 Folds, Webbing, or Wrinkles -- 6.6.21 Part Deforms During Demolding -- 6.6.22 Poor Part Detail -- 6.6.23 Excessive Post Shrinkage. |
Chapter 7 Thermoforming-Optimization -- 7.1 Introduction -- 7.2 Thermoforming -- 7.3 Optimization Process -- 7.4 Numerical Modeling -- 7.5 Constitutive Model -- 7.6 Key Findings-Modeling -- 7.6.1 Selection of Material -- 7.6.2 Wall Thickness -- 7.7 Mold -- 7.8 Thermoforming Process -- 7.9 Viscoelastic Behavior -- 7.10 Method of Thermoforming -- 7.11 Heating -- 7.12 Cooling -- 7.13 Computer Simulation -- 7.14 Polyflow -- 7.15 PAM-FORM™ Software -- 7.16 Geometric Element Analysis (GEA) -- Chapter 8 Case Studies -- 8.1 Introduction -- 8.2 Case Studies-Brief Details -- 8.3 Case Study I -- 8.3.1 Challenge -- 8.3.2 Problem Statement -- 8.3.3 In-Depth Analysis -- 8.3.4 Quantitative and Qualitative Data -- 8.3.5 Findings -- 8.3.6 Immersive Chronicle -- 8.4 Case Study II -- 8.4.1 Issue -- 8.4.2 Problem Statement -- 8.4.3 In-Depth Analysis -- 8.4.4 Analysis of Quantitative and Qualitative Data -- 8.4.5 Customer Satisfaction and Appreciation -- 8.4.6 Findings -- 8.4.7 Captivating Account -- 8.5 The Significance of Case Studies in Thermoforming -- Chapter 9 Applications -- 9.1 Introduction -- 9.2 World of Thermoformed Products -- 9.2.1 Packaging -- 9.2.2 Agriculture -- 9.2.3 Appliances and Consumer Goods -- 9.2.4 Analytical and Laboratory Equipment -- 9.2.5 Automotive and Aerospace Industry -- 9.2.6 Blister Packaging -- 9.2.7 Building/Construction Products -- 9.2.8 Electrical and Electronics -- 9.2.9 Health-Care Packaging -- 9.2.10 Medical Applications -- 9.2.11 Packaging -- 9.2.12 Semiconductor Industry -- 9.2.13 Signs/Displays -- 9.2.14 Sports and Recreation -- 9.2.15 Transportation -- 9.2.16 Waste Management -- 9.2.17 Water Filtration Systems -- 9.2.18 Industrial Applications -- 9.2.19 Marine and Watercraft Industry -- 9.3 Market Trends -- 9.3.1 Current Market -- 9.3.2 Future Market -- Chapter 10 Conclusion -- References -- Index -- Also of Interest -- EULA. |
|
|
|
|
|
|
Sommario/riassunto |
|
This book, 'Thermoforming: Processing and Technology,' provides a comprehensive examination of thermoforming technologies, focusing on the methods, materials, and applications relevant to the industry. It delves into the physics and chemistry of polymers, detailing both natural and synthetic types, and explores the various thermoforming processes such as vacuum forming, pressure forming, and plug-assist forming. The book also covers the properties of thermoplastic sheet materials, including molecular structure and thermal properties, and addresses the optimization and quality analysis of thermoformed products. It is aimed at professionals and students in the fields of materials science and engineering, providing insights into industrial applications and market trends. |
|
|
|
|
|
|
|
| |