Polycarbonate combination and preparation method thereof
A technology of polycarbonate and composition, applied in the field of polycarbonate composition and its preparation, can solve the problems of difficult to achieve flame retardancy, decreased light transmittance, uneven dispersion of flame retardant and light diffusing agent, etc. The effect of high rate, excellent light diffusion performance and excellent flame retardant performance
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[0033] According to the preparation method of polycarbonate composition of the present invention, comprises steps:
[0034] Weigh each component raw material of aforementioned polycarbonate composition;
[0035] Put the weighed raw materials of each component into the mixer and mix evenly;
[0036] The uniformly mixed raw materials are melted, kneaded, extruded and granulated through an eight-temperature zone twin-screw extruder, and the residence time of the compound in the extruder is controlled at 1 to 2 minutes. The temperature control of the twin-screw extruder is: 260-270°C in zone 1, 270-290°C in zone 2, 270-290°C in zone 3, 270-290°C in zone 4, 270-290°C in zone 5 , Zone 6 is 270-290°C, Zone 7 is 270-290°C, Zone 8 is 270-290°C, head temperature is 250-280°C, and melt temperature is controlled at 260-285°C.
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