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    Optical Plastics - Physical and Mechanical Properties

     

    Optical Plastics - Properties and Melt Flow Rate

    Physical and Mechanical Properties
    Material* OKP1 (Polyester) OKP4 (Polyester) OKP4HT (Polyester) OKPV1 (Polyester) OKPA2 (Polyester) LEV1700KL (PC) U-100
    (Ultem-like)

    T-200
    (Ultem-like)
    Tg  °C

    132

    		 121 142 149 144 147 193 265
    for solder reflow
    HDT  °C
    (°C, 1.80MPa)

    122
    w/annealing

    		 111
    w/annealing    		 133
    w/annealing    		 139
    w/annealing    		 130
    w/annealing    		 126
    no annealing    		 177
    no annealing    		 250
    no annealing

    %-Water 
    (24 hours)

    		 0.09% 0.14% 0.11% 0.11% 0.08% .3% .26% .35%

    Tensile strength
    at break (MPa)

    		 77 72 79 65 78 65 69 80
    Linear Expansion Coefficient 6.5
    (10 -5/°C)    		 7.2
    (10 -5/°C)    		 6.3
    (10 -5/°C)    		 6.1
    (10 -5/°C)    		 6.0
    (10 -5/°C)    		 6.8
    (10 -5/°C)    		 .6
    (10 -4/°C)    		 0.7
    (10 -4/°C)