Selecting thermoplastics for engineering applications

✍ Scribed by MacDermott, Charles P

• Publisher: CRC Press
• Year: 2020
• Tongue: English
• Leaves: 324
• Edition: Second edition
• Category: Library

✦ Synopsis

Definition of engineering thermoplastic resins; beginning the selection process; physical property data; rheological property data; the injection-moulding process; kinds of injection moulders; roles of custom moulders in resin selection; prototype parts; estimating part costs; review of key engineering thermoplastics; ranking of resins and selection process; reselection of resin; effects of recycling on resin; other engineering thermoplastics; computerized approach to resin selection; appendix A -- partial list of suppliers for engineering; appendix B -- details of various files needed for the expert system.

✦ Table of Contents

Cover......Page 1
Half Title......Page 2
Title Page......Page 6
Copyright Page......Page 7
Preface......Page 8
Acknowledgments......Page 10
Table of Contents......Page 12
Introduction......Page 20
Low Cost......Page 25
Colorability......Page 26
The Need for a Selection Process......Page 27
General Information......Page 34
Appearance Considerations......Page 35
Material Selection Factors......Page 37
Codes and Specifications......Page 38
Costs......Page 39
Service Environment......Page 40
Structural Properties......Page 44
Other Design Considerations......Page 46
Process Considerations......Page 48
Introduction......Page 50
Tensile Properties......Page 52
Flexural Properties......Page 55
Heat Deflection Temperature of Plastics Under Load......Page 60
Impact Resistance of Plastics (Izod Impact Test)......Page 63
Creep......Page 64
Fatigue......Page 71
Arc Resistance......Page 76
Dielectric Strength......Page 77
Introduction......Page 78
Complexities in Rheological Data Generation......Page 80
A Simplified Approach to Rheology......Page 82
Rheological Models for Unified Viscosity-MFI Curves......Page 88
Practical Applications of the Unification Technique......Page 91
Case Studies......Page 95
Process Description......Page 102
Hopper......Page 103
Hopper Dryer......Page 104
Barrel and Screw......Page 105
Runners......Page 106
Mold......Page 107
The Captive Molder......Page 110
Typical Custom Molder......Page 111
Cost of Manufacture (Excluding Materials)......Page 112
Mold Design and Operation......Page 114
Sales......Page 117
Administrative......Page 118
Servicing Large Organizations......Page 120
Servicing Smaller Organizations......Page 121
Material Supplier Performance......Page 122
Mold Shrinkage......Page 123
Economics......Page 124
Introduction......Page 126
Molding in Temporary Prototype Molds......Page 127
Preproduction Tooling......Page 129
Molding in Die-Cast Molds......Page 131
Introduction......Page 134
Example: Comparison of Estimated Part Costs......Page 135
Summary......Page 139
Compositions Selected for Individual Attention......Page 140
ABS......Page 141
Acetals......Page 143
Nylon 6......Page 146
Nylon 6/6......Page 147
Glass-Reinforced Nylons......Page 149
Mineral-Reinforced Nylons......Page 151
Toughened Nylon (Super Tough®)......Page 154
Polycarbonate......Page 156
Glass-Reinforced Polycarbonate......Page 159
Polyphenylene Ether-Based Resin (Notyl®)......Page 160
PPE-Based Resin-Glass Reinforced......Page 161
Polypropylene (Talc Filled)......Page 163
Polysulfone......Page 164
Thermoplastic Polyesters......Page 167
Introduction......Page 172
Ranking by Resistance to Chemicals and Solvents......Page 177
Ranking by Flexural Modulus (Stiffness)......Page 178
Ranking by Flexural Strength......Page 181
Ranking by Toughness (Notched Izod)......Page 182
Ranking by Elongation at Break......Page 184
Ranking by Apparent (Creep) Modulus......Page 185
Ranking by Dielectric Strength......Page 187
Ranking by Specific Gravity......Page 188
Ranking by Typical Mold Shrinkage (and Effects on Warpage)......Page 189
Ranking by Price......Page 190
Ranking by Processability......Page 191
Example #1......Page 192
Example #2......Page 196
"General Usefulness" Ranking......Page 197
Introduction......Page 202
Warpage......Page 203
Flash......Page 204
Introduction......Page 206
American Plastics Council......Page 208
The Automotive Industry......Page 209
Selective Dismantling......Page 212
Coding and Identification of Plastics......Page 215
Summary and Conclusion......Page 216
Introduction......Page 218
Properties......Page 219
Chemistry......Page 221
Chemistry......Page 222
End Uses......Page 223
End Uses......Page 224
End Uses......Page 225
Properties......Page 226
Special Considerations......Page 227
Introduction......Page 228
Knowledge Base......Page 230
Expert Systems in Materials Selection......Page 231
Knowledge Base......Page 233
Rules Structure with Probability Assignments......Page 234
Some Sample Production Rules......Page 235
Example Session with Selecther......Page 252
References......Page 280
Appendix A: Suppliers for Engineering Plastics......Page 288
Appendix B: Details of Various Files Needed for the Expert System Selecther......Page 292
Glossary......Page 310
Nomenclature......Page 316
Index......Page 320

✦ Subjects

Thermoplastics