Question

State two major types (Grades) of each of the following polymers:
                                Polystyrene
                                 Polyurethane
                                 Polyvinylchloride

Answer 1

1). Poly Stylene 9) It's a plau hic, naturally transparent letefnusken Thermoplastin that is available in as both a typical solid plastic as well as fosem of a rigid foam malenial. Chemicau fosemwa C Co Hp)ni melt temp 210 - 249 °C Typical injection & 38-66°c molding Temp Types of Polystysene : . 1) Three major type: 21 polystyuene foam; vegwase polystyreno plastic & polystyvene film. 3) Among different type of foam. Axe expanded polystyrene (EPS) and extreuded polystysene (XPS) 24) Eps includes stylofoam.& packing . peanuts 5) XPS is Highese density foam typically used in application like aguicult we building modeli 2) Polyurethane Poly weethane are a claus of versatile Too smaterial with great potential to use in

10HS different applications... Types of polyusiethanes : 1) Rigid polywrethane foame un a) one of the most commonly knou energy soving insulation materer al o Reduce energy cost and make commercial and Mesidental applecti appliances con more com hostible and efficient 2) Flexible Polyweethane foams : 1) FPU complejse some blocks copolymers whose flexibility is based on the phause seperwhen between soft and Hand segments. 3) Thesemoplastin polyurethane 1) Theremoplastio polywethanes Meveal vast combina - tion of both physicor pusperties and processing applications 2) They aut Hexible and flashin with good. Hesistance impact, abuasion and weather 3) Poly vinyl Chloe'de : Puc is one of the most commonly used theremo- plastic polymers in the world. It's a naturally while and very bwittte • Types of PVC Cscanned with There are two types Pvc : Rigid & flexible - Gemscannet

1) Rigid PVC o Un modified PVC is a very deigid thesemoplasin. 2) It's mostly used in manufacture of pipe, extuluded wilie contine covering, toys, bothes, doose and window components , film and faberc coating 3) wide sange of Hexibility possible with varying Jevel of plasticizem D) Flexibie.pve: Flexible PVC is a soft flexible material that changes in apperance from theansparent to opaque Puc is manufacture with plastizers which get subbeny pleoperety at the end flexible PUC is used in wille & cable Jocking Jacketing Pool lineus, flooking, Garden House, Runweave & Boots, Medical Tabing, Automotive interior teim, plumbing etc. . CS Scanned with !", plumbina CamScanner