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M&M Gen. Info. Materials (Wood (made up of polymers: (Lignin,…

- - - - Strength will lower slightly by repeating process
      - energy efficient to recycle
      - molded in a range of processes
    - - ABS
        
        safety
        
        canoes
        
        lego
      - Acrylic
        
        transpart + lightweight
      - Polyester
        
        textiles
        
        furniture
        
        conveyor belts
        
        reinforcement
      - Polypropylene
        
        packaging
        
        labelling
      - Polystyrene
        
        disposable cutlery
        
        foam cups
      - Cellulose acetate
        
        photography
        
        adhesives
      - Teflon
        
        non stick coating of cookware
      - Nylon
        
        durable strings for various industries
  - - - Can NOT be re-processed
      - Molded by:
        
        Vacuum Casting
        
        Injecting
        
        Vacuum Drawing
      - hard to recycle
        
        can be crushed down to make it into fillers
      - reactions are exothermic
        
        thick wall thicknesses + heat = low part strength
      - can be developed to self heal
        
        with help of:
        
        microcapsules of dicyclopentadiene (DCPD)
        
        when component raptured then agent is released
        
        75% material toughness recovered
    - - Polythelene (PE)
      - Low density polyethylene (LDPE)
        
        Packaging use
      - Ultra high density polyethylene (UHDPE)
        
        range from medical to bullet proof armour
- - - - Tensile Strength
      - Compression Strength
  - - - Steam Bending
    - - CNC machining
- - - - therefore they can be molded in plastic molds
  - - - use of:
        
        investment cast
        
        refractory ceramic shells
        
        formed in solid state
- - - - fibers align with the direction of flow.