Method for preparing wear-resistant plastic particles by using waste polystyrene
A technology of waste polystyrene and plastic particles, applied in the field of polymers, can solve the problems of poor wear resistance, poor mechanical properties of wear resistance, and insignificant performance enhancement effect of polymer blends, etc., to achieve improved wear resistance , solve the effect of poor wear resistance and enhance the interaction force
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Embodiment 1
[0016] A method for preparing wear-resistant plastic particles by using waste polystyrene, the specific preparation method is as follows:
[0017] 1) Clean the recovered waste polystyrene and put it into the pressure reactor. According to the mass ratio of 1:1, add an appropriate amount of liquid paraffin, seal the reactor, and use nitrogen to purify for 15 minutes to discharge the air in the reactor, so that the reaction system Under a nitrogen environment, turn on the stirring device, heat up to 200°C at a speed of 150r / min, heat-treat for 25min, then cool down to 110°C, add cobalt powder with 1% polystyrene weight after exhaust gas, and cool naturally to room temperature. After solid-liquid separation, the solid phase product is used for standby to obtain pretreated polystyrene;
[0018] 2) Add a certain amount of chitosan to the acetic acid solution with a concentration of 1%, put it in a water bath and fully dissolve it to obtain a chitosan solution with a content of 10%,...
Embodiment 2
[0023] A method for preparing wear-resistant plastic particles by using waste polystyrene, the specific preparation method is as follows:
[0024] 1) Clean the recovered waste polystyrene and put it into the pressure reactor. According to the mass ratio of 1:1.2, add an appropriate amount of liquid paraffin, seal the reactor, and use nitrogen to purify for 20 minutes to discharge the air in the reactor, so that the reaction system Under a nitrogen environment, turn on the stirring device, heat up to 210°C at a speed of 180r / min, heat-treat for 20min, then cool down to 120°C, add cobalt powder with 1.3% polystyrene weight after exhaust gas, and cool to room temperature naturally. After solid-liquid separation, the solid phase product is used for later use to obtain pretreated polystyrene
[0025] 2) Add a certain amount of chitosan to the acetic acid solution with a concentration of 2%, put it in a water bath and fully dissolve it to obtain a chitosan solution with a content of...
Embodiment 3
[0030] A method for preparing wear-resistant plastic particles by using waste polystyrene, the specific preparation method is as follows:
[0031] 1) Clean the recovered waste polystyrene and put it into the pressure reactor. According to the mass ratio of 1:1.5, add an appropriate amount of liquid paraffin, seal the reactor, and use nitrogen to purify for 25 minutes to discharge the air in the reactor, so that the reaction system Under a nitrogen environment, turn on the stirring device, heat up to 220°C at a speed of 200r / min, heat treatment for 15min, then cool down to 130°C, add cobalt powder with 1.5% polystyrene weight after exhaust gas, and cool naturally to room temperature. After solid-liquid separation, the solid phase product is used for later use to obtain pretreated polystyrene
[0032] 2) Add a certain amount of chitosan to the acetic acid solution with a concentration of 3%, put it in a water bath and fully dissolve it to obtain a chitosan solution with a conten...
PUM
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Abstract
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