Method of palliating degradation degree in polypropylene fusion graft process
A technology of melting grafting and polypropylene, which is applied in the field of polymer polymerization and processing, can solve the problems of low grafting rate of degradation, etc., and achieve the effect of increasing grafting rate, excellent performance, and improved processing performance
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Embodiment 1
[0025] composition
[0026] The preparation process is as follows: 100 parts of polypropylene, 1.0 part of maleic anhydride, 0.12 parts of initiator TX101, and 0.3 parts of antioxidant 1010 are mixed uniformly according to the proportion. Then use the twin-screw extruder to carry out the melt extrusion grafting reaction. The temperature of each section of the twin-screw extruder is respectively: the temperature in zone I is 170°C, the temperature in zone II is 200°C, the temperature in zone III is 220°C, and the temperature in zone IV is 220°C. The temperature in zone V is 220°C, the head temperature is 220°C, the screw speed is 45r / min, and the residence time of the material in the twin-screw extruder is 3min. Then the grafted product is cooled and pelletized to obtain the product.
Embodiment 2
[0028] composition
[0029] The preparation process is as follows: mix 100 parts of polypropylene, 1.0 parts of maleic anhydride, 0.12 parts of initiator TX101, 0.3 parts of antioxidant 1010, and 0.65 parts of the second monomer divinylbenzene according to the proportion, and add them into the twin-screw extruder The hopper of the machine, and then use the twin-screw extruder to carry out the melt extrusion grafting reaction. The temperature of each section of the twin-screw extruder is respectively: the temperature in zone I is 170°C, the temperature in zone II is 200°C, the temperature in zone III is 220°C, and the temperature in zone IV is 220°C. The temperature is 220°C, the temperature in the V zone is 220°C, the head temperature is 220°C, the screw speed is 45r / min, and the residence time of the material in the twin-screw extruder is 3min. Then the grafted product is cooled and pelletized to obtain the product.
Embodiment 3
[0031] composition
[0032] The preparation process is as follows: 100 parts of polypropylene, 5.0 parts of polyether acrylate, 0.12 parts of initiator TX101, and 0.3 parts of antioxidant 1010 are uniformly mixed according to the ratio, and then reacted in a twin-screw extruder. The temperature of each section of the twin-screw extruder is: the temperature in zone I is 170°C, the temperature in zone II is 200°C, the temperature in zone III is 220°C, the temperature in zone IV is 220°C, the temperature in zone V is 220°C, the temperature of the head is 220°C, and the screw speed is 45r / min, the residence time of the material in the twin-screw extruder is 3min. Then the grafted product is cooled and pelletized to obtain the product.
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