Injection Molding of Thermoplastics Materials 2

Injection Molding of Thermoplastics Materials 2
Tony Whelan and John Goff
Contents
Plastics and polymers 6
Injection molding of thermoplastics 11
Ethylene vinyl acetate (EVA) 49
High density polyethylene (HDPE) 60
Low density polyethylene (LDPE) 74
linear low density polyethylene (lll)PE) 85
Polypropylene (PP) 97
Rubber modified polypropylene (PP-EPDM)) 112
Plasticized polyvinyl chloride (PPVC) 126
Unplasticized polyvinyl chloride (UPVC) 142
List of Tables
1 Some names and abbreviations of plastics and elastomers 156
2a Letters used to modify abbreviations for plastics (ISO and ASTM) 160
2b Commonly-used letters used to modify abbreviations for plastics (i.e. in addition to table 2a) 160
2c Symbols used for fillers and/or reinforcing materials 161
3 Some abbreviations and trade names of plastics 162
4 Some trade names, abbreviations and suppliers of polymers and polymer compounds 165
5 Water absorption and drying conditions 178
6 Heat contents of some molding materials 179
7 Approximate price of materials relative to a general purpose grade of PS (GPPS = 1.00) 180
8 Densities and approximate costs of materials 181
9 Material properties 182
10 Temperature conversion
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