Clay reinforced polypropylene inside-kettle alloy and preparation method thereof
A technology of alloy and polypropylene in a kettle, which is applied in the field of clay-reinforced polypropylene kettle alloy and its preparation
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Embodiment 1
[0066] Under vacuum state, propylene monomer is charged in the reaction kettle, add successively 100ml hexane, the heptane solution 3.0ml that contains 5.5mmol triethylaluminum and 0.1 gram clay supported transition metal catalyst (the mass percent of titanium element in the catalyst The content is 1.34%, the mass percentage of zirconium element is 0.30%), the pressure in the kettle is constant at 7.0 atmospheres, the reaction temperature is 70°C, and the polymerization reaction is 0.5 hours;
[0067] Then, stop feeding the propylene monomer, feed the mixed gas of ethylene and propylene (wherein the mol ratio of ethylene and propylene is 1: 2) in the reactor, continue to react for 0.2 hour, the pressure in the still is constant to be 5.0 atmospheric pressure, The reaction temperature is 70°C. After the reaction is completed, acidified ethanol is added to terminate the polymerization reaction, washed with deionized water and ethanol, and vacuum-dried at 60°C to obtain 6.7 grams ...
Embodiment 2
[0083] 250 grams of liquid propylene was added to the reactor, and 0.25 mol of triethylaluminum and 1.0 gram of clay-supported transition metal catalyst were added successively at 30°C (the mass percentage of titanium in the catalyst was 1.78%, and the mass percentage of zirconium was 100%) content of 0.15%) and 0.2 g of hydrogen, the temperature was raised to 70° C., and the reaction was carried out for 0.2 hours, and the obtained polymer was directly subjected to the next reaction.
[0084] Vent the remaining propylene in the reaction kettle in the above steps and lower the temperature to 50°C, then pass in a mixture of 20g of ethylene and 60g of propylene, pass in 0.05g of hydrogen, raise the temperature to 90°C, and react for 0.2 hours to finally obtain nanoclay 120.0 g of reinforced heterophase copolymer polypropylene kettle alloy.
[0085] The apparent morphology of nanoclay-reinforced heterogeneous copolymerized polypropylene alloy particles is spherical, such as Figu...
Embodiment 3
[0100] 250 grams of liquid propylene was added to the reactor, and 0.25mol of triethylaluminum and 1.0 gram of clay supported transition metal catalyst were added successively at 30°C (the mass percentage of titanium in the catalyst was 1.34%, and the mass percentage of zirconium was content is 0.30%), the temperature was raised to 70° C., and reacted for 0.2 hours, and the obtained polymer was directly subjected to the next step of reaction.
[0101] Vent the remaining propylene in the reaction kettle in the above steps and lower the temperature to 50°C, then pass in a mixture of 20g of ethylene and 60g of propylene, pass in 0.05g of hydrogen, raise the temperature to 90°C, and react for 0.2 hours to finally obtain nanoclay Reinforced heterophase copolymerized polypropylene kettle alloy 110.0g.
[0102] The nano-clay reinforced heterogeneous copolymerized polypropylene alloy particles are spherical in appearance, and the particle size is 50-500 μm; the mass percentage content...
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