Method for preparing nano-plastic by waste plastic
A technology for waste plastics and nano-plastics, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of environmental pollution, non-recycling, labor consumption, etc., to reduce environmental pollution, increase density, and improve quality.
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Embodiment 1
[0023] 1) Pulverization: Pulverize thermosetting waste plastics into fine plastic particles of 50-80um mesh. The particle size of the pulverized plastic fine particles is suitable, and there is no need to use fine instruments for processing.
[0024] 2) Impurity removal: Clean the fine plastic particles with a mixture of ethanol and ether, acetone, and deionized water in an industrial ultrasonic machine for 15 minutes, and then wash them twice with 120# gasoline and deionized water. Remove impurities to remove water-soluble and fat-soluble substances on the surface of thermosetting waste plastics, and improve the quality of thermosetting waste plastics.
[0025] 3) Catalytic hydrocracking: Put the cleaned plastic fine particles into the reactor, 450 ° C, under the condition of catalyst and stirring for 30 minutes to hydrocrack, 80% of the small molecule liquid can be obtained, of which the small molecule liquid The monomer undergoes polyaddition reaction to become a liquid pla...
Embodiment 2
[0036] Embodiment 2: the rest are the same as the above-mentioned embodiment 1, the difference is that in step 6), first vacuum cooling for 3h, and then cooling for 3h, in this embodiment, the flame retardant effect of the obtained plastic is slightly worse than that of embodiment 1, but Al The mixture of (OH)3, octabromoether and Mg(OH)2 has low consumption and does not affect the use effect.
Embodiment 3
[0037]Embodiment 3: the rest are the same as the above-mentioned embodiment 1, the difference is that no catalyst is used in step 3), the efficiency of hydrocracking is significantly reduced, and only 30% of the small molecule liquid can be obtained in the same time, and the amount is significantly reduced .
[0038] It can be seen from the actual application of this embodiment that the present invention processes the waste thermosetting plastics through six steps of crushing, impurity removal, catalytic hydrocracking, modification, vacuum degassing, and shaping, not only reusing waste, but also purifying the waste thermosetting plastics. , reduce environmental pollution, increase the heat resistance, wear resistance and flame retardancy of recycled plastics, and have a wide range of market applications. Water-soluble and fat-soluble substances on the surface of thermosetting waste plastics can improve the quality of thermosetting waste plastics. During modification, adding co...
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