P S A L C I T M E T A L A RI Differentiate PLASTIC AND RUBBER place of origin PLASTIC PLASTIC RUBBER  Natural Natural rubber rubber derived derived from from the the sap sap of of   Plasticizers are synthesized from petrochemicals  rubber rubber Synthetic Synthetic rubber rubber (synthetic (synthetic rubber) rubber) is is generated from condensation reaction generated from condensation reaction structures structures include include isoprene isoprene unit unit IR IR synthetic synthetic rubber rubber is is derived derived from from crude crude oil oil APPLICATION OF RUBBER INDUSTRY Tire Anti-corrosion products Castings Technical products in car Power cord… MEDICAL  Gloves  Medical instruments  Transfusion tube LIFE  Footwear  Toy  furniture  Production of paper  mattress APPLICATION OF PLASTIC Some applications PE Dây bọọc điệọn Bình chựốa Túi nilọn ốống nhựọa PE Tâốm nhựọa PE Some applications of PMM Răng giaả Nữ trang Kính máy bay Thấu kính Kính viễn vọng Kính mô tô thermoplastic Thermoplastic: A type of plastic when heated, it will plasticizer, such as: PP, PE, PVC, PS, PC, PET, (pitchers, bottles, jars, )  It will harden when cooled to room temperature  Can be reformatted 2nd fervent thanks shapes => styling easy and economical machining PLASTIC ELASTOMERS thermosetting resin  Thermoset Thermoset Plastics: Plastics: A A type type of of plastic plastic when when heated heated to to hard hard solid, solid, eg eg PF, PF, MF, MF, (handle (handle pan, pan, saucepan saucepan handles, handles, pot pot handles, handles, ) )  If If heated heated 2nd 2nd it it will will be be destroyed destroyed rather rather than than melting, melting, PLASTIC IS one of thermoset resins type additive in injection technology          Additives increase belt-CGE 106 Earnings increased transparent Earnings increased Shọwy Additives stiffener Additives increase Lubricants Additives UV resistant Anti aging supplements Anti-static additives infectiọn (Anti Static Agent) ASA 126 Additives anti-shrinkage, warping VISCOSITY OF PLASTIC  Viscosity is a measure of the friction characteristics of the fluid (gas, liquid )  The higher viscosity, fluid flow in the tube harder (large friction) Here is plastic resin melt or pastes The relatiọnship between temperature Pressure and vọlume (PVT) ọf plastic? Hình 2.1 Kennedy schema ọf the relatiọnship ọf the cọnditiọnsP.V.T0[22] Fg 2.1  Figure 2.1 is schematic Kennedy ọn vapọr pressure dependence ọn temperature in isọmetric cọnditiọns (dọtted lines indicate the pressure (P) depends ọn the temperature (T0) when pọt EFFECTS OF PVT    Temperature: influence prọduct fọrmatiọn Pressure: necessary fọr saturatiọn sọlubility Time: decisive stabilizatiọn phases RELATIONSHIP WHEN PLASTIC PVT  Temperature, pressure and time have intimate relations directly influence the formation of the product  The pressure contributed to the thermodynamic stability of the product mix Molecular size of some kind of plastic?