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PLASTICS - Coggle Diagram

- - - - Agglutination: Compact material and incorporate into others
      - Extrusion: Melt material and extrude into long filaments
      - Floating: Wash plstics and dry them
      - Pelletising: Filaments reduced into pellets
      - Separation and crushing: Separate plastics and crush them
- - - - TYPES
        
        Phenolic resins (PH)
        
        Melamine formaldehyde (MF)
        
        Polyurethane (PUR)
        
        Polyester resins (UP)
        
        ELASTOMERS
        
        Hard, resistant and elastic.stretching easily under force
        
        Chains linked laterally and folded over themselves
        
        Made by vulcanisation, mixing sulphur and rubber
        
        THERMOPLASTICS
        
        TYPES
        
        Polystyrene (PV)
        
        Polythene (PE)
        
        Polyvinyl (PVC)
        
        Polypropylene (PP)
        
        Polymethyl methacrylate (PMMA) (Plexiglas)
        
        Teflon (Fluorocarbon)
        
        Cellophane (Biodegradable)
        
        Nylon (PA or polyamide)
        
        CHARACTERISTICS
        
        When we heat them, they become soft
        
        The heating and cooling process can be repeted many times
        
        Weakly formed molecular chains
        
        THERMOSTABLE
        
        CHARACTERISTICS
        
        Strongly-linked chains
        
        Heat becomes soft
        
        Compound derived from petroleum
        
        Cooled, cannot be remolded
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- - - - SHAPING AND FINISHING TECHNIQUES
        
        CUTTING
        
        Fretsaw
        
        Straight, slanting or curved cuts
        
        Cut soft, low density objects
        
        Jig saw
        
        Cut large sheets of plastic and rigid plastics
        
        Straight, slanting or curved cuts
        
        Steel bit
        
        Cut sheets less than one 1 mm in thickness
        
        Scissors
        
        Cut soft, thin flexible sheets
        
        Power press
        
        Cut flat sheets of low density plastic
        
        Makes simple objects by applying pressure
        
        Cutter
        
        Cut sheets of different thickness
        
        Hot metal thread trimmer
        
        Cut sheets of soft thermoplastic
        
        PERFORATING
        
        Drill bit
        
        Insert a thin threaded piece of metal into the head of the machine that revolves and cuts holes
        
        Tool that makes holes in plastics
        
        TRIMMING AND FILLING
        
        A RASP is covered with teeth
        
        Use: Finish the surface of hard materials
        
        Use: Finish the surface of soft materials
        
        A FILE has a rough surface
- - - - JOINING PLASTICS
        
        PERMANENT JOINTS
        
        ADHESIVES
        
        1 more item...
        
        1 more item...
        
        1 more item...
        
        Use: Join two surfaces permanently
        
        SOLDERING
        
        Join thermoplastics using heat and pressure
        
        TEMPORARY JOINTS
        
        STANDARD SCREW
        
        Drill holes before the screw is inserted
        
        Use: Fasten two objects
        
        DOUBLE ENDED SCREW
        
        Each end can be inserted into one of a pair of objects
        
        NUT AND BOLT
        
        Nut used to tighten the bolt
        
        Use: Fasten two objects together