Polycarbonate composite material suitable for LED (light-emitting diode) lamp cover and preparation method thereof
A technology of LED lampshades and polycarbonate, applied in lampshades, lighting and heating equipment, components of lighting devices, etc., can solve the problems of low light transmittance, light energy loss, etc., and achieve uniform dispersion and high transmittance and haze, good compatibility effect
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Embodiment 1
[0031] Weigh the following raw materials according to weight ratio (PHR): polycarbonate 100 PHR; light diffusion masterbatch 5 PHR; flame retardant 0.3 PHR; nanometer masterbatch (silicon dioxide) 1 PHR, other additives 0.2 PHR. Put the matrix polycarbonate, nano-masterbatch and other additives and flame retardants into the hopper of the twin-screw extruder, and the light-diffusing masterbatch is fed through the side feeder, melted and extruded, and granulated; the processing technology is as follows : Twin-screw extruder zone 1 temperature 240-250°C, zone 2 temperature 250-260°C, zone 3 temperature 260-270°C, zone 4 temperature 270-275°C, zone 5 temperature 265-270°C, zone 6 temperature 270 -280°C, the die head temperature is 275-280°C, and the pressure is 2-2.5MPa.
Embodiment 2
[0033] Weigh the following raw materials according to the weight ratio (PHR): polycarbonate 100 PHR; light diffusion masterbatch 7 PHR; flame retardant 0.7 PHR; nanometer masterbatch (silicon dioxide) 1 PHR, other additives 0.6 PHR. Put the matrix polycarbonate, nano-masterbatch and other additives and flame retardants into the hopper of the twin-screw extruder, and the light-diffusing masterbatch is fed through the side feeder, melted and extruded, and granulated; the processing technology is as follows : Twin-screw extruder zone 1 temperature 240-250°C, zone 2 temperature 250-260°C, zone 3 temperature 260-270°C, zone 4 temperature 270-275°C, zone 5 temperature 265-270°C, zone 6 temperature 270 -280°C, the die head temperature is 275-280°C, and the pressure is 2-2.5MPa.
Embodiment 3
[0035] Weigh the following raw materials according to weight ratio (PHR): polycarbonate 100 PHR; light diffusion masterbatch 10 PHR; flame retardant 1.0 PHR; nanometer masterbatch (silicon dioxide) 1 PHR, other additives 0.9 PHR. Put the matrix polycarbonate, nano-masterbatch and other additives and flame retardants into the hopper of the twin-screw extruder, and the light-diffusing masterbatch is fed through the side feeder, melted and extruded, and granulated; the processing technology is as follows : Twin-screw extruder zone 1 temperature 240-250°C, zone 2 temperature 250-260°C, zone 3 temperature 260-270°C, zone 4 temperature 270-275°C, zone 5 temperature 265-270°C, zone 6 temperature 270 -280°C, the die head temperature is 275-280°C, and the pressure is 2-2.5MPa.
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