2.1.3 Additives of plasticsThe major additives include:Antioxidants.Filler,Plasticizers.Flame retardants.Colorants,Foaming agents
2.1.3 Additives of plastics The major additives include: Antioxidants, Filler, Plasticizers, Flame retardants, Colorants, Foaming agents
2,1.4 Classification of plasticsPlastics can be separated into two differentgroups depending on their behavior whenheated.Thermoplastics and thermosetting plastics
2.1.4 Classification of plastics Plastics can be separated into two different groups depending on their behavior when heated. Thermoplastics and thermosetting plastics
2.1.5 Plastics characteristicsa) Light weight in comparison to metal, glassb) Good insulator of heat and electricityc) Good chemical resistanced) Multiple processing capabilities to producecomplicated parts with precision
2.1.5 Plastics characteristics a) Light weight in comparison to metal, glass b) Good insulator of heat and electricity c) Good chemical resistance d) Multiple processing capabilities to produce complicated parts with precision
2.1.6 Plastics processingInjection moldingExtrusionCompression moldingTransfer moldingBlow moldingThermoforming, rotational molding andblown film, cast film, calendering(压延)
2.1.6 Plastics processing Injection molding, Extrusion Compression molding Transfer molding Blow molding Thermoforming, rotational molding and blown film, cast film, calendering(压延）
2.1.6.1 Injection molding1) Injection unit2) Clamp unit3) Machine control
2.1.6.1 Injection molding 1) Injection unit 2) Clamp unit 3) Machine control