PC flame-retardant infrared-transmitting material and preparation method thereof
A technology of infrared transmission and flame retardant, which is applied in the field of engineering plastics, can solve the problem of difficult balance between flame retardancy and infrared transmittance, and achieve the effects of undamaged infrared transmittance, low cost and simple operation
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[0026] The present invention also provides a preparation method of the above-mentioned PC flame-retardant infrared-transmitting material, the preparation method comprising the following steps:
[0027] (1) Provide the raw material according to the ratio;
[0028] (2) Fully mix the PC resin, the transparent halogen-free flame retardant and the dispersant to obtain the first mixture, then add white oil to the first mixture and mix for 2-3 minutes to form the second mixture, because the white oil It can facilitate the combination of toner and PC resin, wherein the amount of PC resin is 100 kg, and the amount of white oil is 500ml;
[0029] (3) adding the specific toner into the second mixture and mixing thoroughly to form a third mixture;
[0030] (4) feeding the third mixture into a twin-screw extruder for melt blending and extruding, cooling and pelletizing to obtain a PC flame-retardant and infrared-transmitting material, the temperature of each section of the twin-screw extr...
Embodiment 1
[0034] The preparation method of the PC flame-retardant infrared-transmitting material of the present embodiment comprises the following steps:
[0035] (1) Provide raw materials according to the following ratio: 100 parts by weight of PC resin, 0.3 parts by weight of transparent halogen-free flame retardant, 0.07 parts by weight of specific toner and 0.04 parts by weight of dispersant;
[0036] (2) Fully mix PC resin, transparent halogen-free flame retardant and dispersant to obtain the first mixture, then add 500ml of white oil to the first mixture and mix for 2-3 minutes to form the second mixture;
[0037] (3) adding the specific toner into the second mixture and mixing thoroughly to form a third mixture;
[0038] (4) Send the third mixture into a twin-screw extruder for melt blending and extrusion, then cooling and granulation to obtain a PC flame-retardant and infrared-transmitting material. The temperature of each section of the twin-screw extruder is 240°C.
Embodiment 2
[0040] The preparation method of the PC flame-retardant infrared-transmitting material of the present embodiment comprises the following steps:
[0041] (1) Provide raw materials according to the following proportions: 100 parts by weight of PC resin, 0.5 parts by weight of transparent halogen-free flame retardant, 0.08 parts by weight of specific toner and 0.05 parts by weight of dispersant;
[0042] (2) Fully mix PC resin, transparent halogen-free flame retardant and dispersant to obtain the first mixture, then add 500ml of white oil to the first mixture and mix for 2-3 minutes to form the second mixture;
[0043] (3) adding the specific toner into the second mixture and mixing thoroughly to form a third mixture;
[0044] (4) Send the third mixture into a twin-screw extruder for melt blending and extrusion, then cooling and granulation to obtain a PC flame-retardant and infrared-transmitting material. The temperature of each section of the twin-screw extruder is 270°C.
PUM
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