Method for recycling lyvinylidene chloride waste
A polyvinylidene chloride, waste technology, applied in the field of polyvinylidene chloride waste recycling, to achieve good economic benefits, excellent performance, low cost effect
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Embodiment 1
[0036] Weigh 42.5kg of pulverized polyvinylidene chloride waste, 4kg of KOH, 3.5kg of methyl methacrylate / acrylic ester copolymer, mix at 200rpm for 15min, and extrude through a twin-screw with an aspect ratio of 35:1 extruder (manufacturer: Qingdao Kechuang Plastic Machinery Co., Ltd.) for extrusion and granulation, set the temperature of the mixing section of the twin-screw extruder to 170°C, the temperature of the plasticizing section to 190°C, the temperature of the compression section to 200°C, and the temperature of the head The temperature is 180° C., and the feed rate of the materials is controlled so that the residence time of the materials in the twin-screw extruder is 15 minutes to obtain granulated materials. Put the obtained pellets into an oven under inert gas N 2 In the atmosphere, the temperature was raised from 25°C to 400°C at a heating rate of 5°C / min, kept at a constant temperature for 1 hour, then raised to 700°C at a heating rate of 10°C / min, carbonized a...
Embodiment 2
[0038] Take by weighing 44kg of pulverized polyvinylidene chloride waste, NaOH 2kg, epoxidized soybean oil 2kg, after mixing for 15min at 300rpm rotating speed, through a twin-screw extruder with aspect ratio 35:1 (manufacturer: Qingdao Kechuang Plastics Co., Ltd. Machinery Co., Ltd.) for extrusion granulation, set the temperature of the mixing section of the twin-screw extruder to 170°C, the temperature of the plasticizing section to 190°C, the temperature of the compression section to 200°C, and the temperature of the head to 180°C to control the feeding of materials The material speed was increased so that the residence time of the material in the twin-screw extruder was 16 minutes to obtain the granulated material. Put the obtained granulated material into an oven, in an inert gas Ar atmosphere, start to heat up from 25°C to 450°C at a heating rate of 7.5°C / min, keep the temperature for 1.5h, and then raise the temperature to 750°C at a heating rate of 12.5°C / min , carboni...
Embodiment 3
[0040] Take by weighing pulverized polyvinylidene chloride waste 47.5kg, Ca(OH) 2 2kg, 0.75kg of methyl methacrylate / acrylate copolymer, 0.75kg of epoxy soybean oil, after mixing for 5min at 400rpm rotating speed, through a twin-screw extruder with aspect ratio 35:1 (manufacturer: Qingdao Kechuang Plastics Co., Ltd. Machinery Co., Ltd.) for extrusion granulation, set the temperature of the mixing section of the twin-screw extruder to 170°C, the temperature of the plasticizing section to 190°C, the temperature of the compression section to 200°C, and the temperature of the head to 180°C to control the feeding of materials The material speed was increased so that the residence time of the material in the twin-screw extruder was 17 minutes to obtain the granulated material. Put the obtained pellets into an oven under inert gas N 2 In / Ar mixed gas atmosphere, start to heat up from 25°C to 500°C at a heating rate of 10°C / min, keep the temperature constant for 2 hours, then raise ...
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