Flame-retarding light-diffusing polycarbonate resin composite for LED lamp and preparation method thereof
A polycarbonate resin and composite material technology is applied in the field of flame-retardant light-diffusing polycarbonate resin composite materials and their preparation, which can solve the problems of limited application scope, low flame retardancy, and inability to meet the requirements, and achieves increased application scope, Satisfying the effect of safety
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[0026] The present invention is described in detail through the following examples, but does not limit the present invention.
[0027] The preparation method is as follows:
[0028] In the first step, each raw material is weighed by weight percentage;
[0029] The second step is to mix the PC resin, flame retardant and light diffusing agent in a high-speed mixer for 3-8 minutes; then add processing aids, heat stabilizers, and light stabilizers to continue mixing at high speed, and wait to be mixed. Then take out the mixture from the high-speed mixer.
[0030] In the third step, the mixture obtained in step 2 is fed into a twin-screw or reciprocating single-screw extruder at a temperature of 250°C-270°C for melt blending, the screw length-to-diameter ratio is less than 40, extrusion, drawing, and cooling , Cut into pellets, and finally get the finished product.
[0031] Table 1-2 shows the formulations of the comparative examples and the examples, taking PC resin as 100 parts by weight...
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