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materials (shell/tougth (metal (aluminium (good (light weigth, corrosion…

- - - - good
        
        light weigth
        
        corrosion resistant
        
        strong at low temperatures
        
        non magnetic
        
        sound and shock absorbent
      - bad
        
        it conducts heat
        
        it conducts electricity
        
        shiny/distracting
    - - good
        
        Tensile Strength
        
        Durability
        
        Rust Resistance
      - bad
        
        Ductility
        
        Malleability
        
        Conductivity
        
        Luster
  - - - GOOD
        
        Good impact resistance with toughness and rigidity
        
        A light-weight plastic
      - BAD
        
        Poor solvent resistance
        
        Formed by conventional thermoplastic methods
    - - bad
        
        Flammable
        
        Poor resistance to acids/alkalies
        
        High shrinkage rate
        
        High gloss surface
      - good
        
        Excellent dimensional stability
        
        High heat resistance
        
        Low water absorption
        
        Low smoke emissions
- - - - bad
        
        thermosetting /cant be remoulded
        
        Electrical insulation properties.
        
        The ability to repel water and form watertight seals.
      - good
        
        Low toxicity
        
        Low chemical reactivity
        
        Low thermal conductivity
        
        Does not support microbiological growth
        
        Thermal stability
        
        Resistance to oxygen, ozone, and ultraviolet (UV) light.
    - - bad
        
        toxic to aquatic life
        
        partly toxic/ dont eat it
        
        will decompose if involved in a fire producing smoke, and toxic fumes and gases.
      - good
        
        WEATHERPROOF
        
        DURABLE & FLEXIBLE
        
        HEAT & COLD RESISTANT
  - - - bad
        
        high-temperature grease
        
        Displays high damping at ambient temperatures
        
        poor water vapour permeability
      - good
        
        Air tight and gas impermeable (a property unique to butyl rubbers)
        
        Flexibility
        
        Good ozone resistance
        
        Good weathering, heat, and chemical resistance
        
        Age resistance
    - - bad
        
        Limited high temperature resistance.
        
        Poor ozone, sunlight, and weather resistance.
        
        Poor flame resistance.
      - good
        
        Good non-polar solvent resistance.
        
        Good water resistance.
        
        Good tear resistance.
        
        Good oil resistance.
- - - - melts when i heat
    - - comfortable and cool
      - virtually maintenance free
      - has open pores that allow water and air to flow through easily
      - there is little danger of mold
  - - - not water proof
      - flamable
      - made of sinthetic materials
    - - light and clean
      - smooth and elastic.
      - soft
      - anti mold
      - chemicals resistance
- - - - needs to be put in the fridge
    - - very cold to the touch
      - does exactly what need it to