Nanoparticle/polypropylene random copolymer compound resin for 3D printing, preparation method and application thereof
A random copolymer and nanoparticle technology, applied in the field of nanoparticle/polypropylene random copolymer composite resin and its preparation, can solve problems such as degradation
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[0085] 1. Preparation of Nanoparticle-supported Catalysts
[0086] The preparation steps of nanoparticle carrier type Ziegler-Natta catalyst:
[0087] The nanoparticle carrier type Ziegler-Natta catalyst used in the present invention is nanoparticle / internal electron donor / MgCl 2 / TiCl 4 The carrier type catalyst is characterized in that a diether or diester compound is used as an internal electron donor, and the diameter of the catalyst particles is 0.1-30 μm. Prepare as follows:
[0088] Weigh 10g anhydrous MgCl 2Put it into a two-neck flask filled with argon gas and stir with a magnet, then add 47.8mL of isooctyl alcohol and 60mL of decane, slowly heat to 130°C while stirring, react at 130°C for 1h until the solution is clear, then cool to 60-80°C °C, add 2.10 g of phthalic anhydride, add 2 g of nanoparticles, and stir overnight until the solution is clear. Under an argon atmosphere, the TiCl 4 Add 250 mL into a well-dried Schlenk reactor, cool down to -20°C, slowly a...
Embodiment 1
[0106] Under normal temperature and pressure, 0.05MPa of H was introduced into the 2L polymerization reactor filled with propylene gas. 2 , add 300g of liquid propylene and 30g of 1-octene (the mass ratio of propylene to 1-octene is 10:1), 4ml of triethylaluminum solution (heptane solution with a concentration of 1.8mol / L) and 300mg of multi-walled Carbon nanotubes / BMMF / MgCl 2 / TiCl 4 Carrier-type catalyst, raise the reaction kettle to 70°C for polymerization, after 60 minutes of reaction, lower the temperature of the polymerization reaction kettle to room temperature, vent the residual gas in the polymerization reaction kettle, take out the polymer obtained by the polymerization reaction, and dry it in vacuum for 6 hours to obtain 200g gray carbon nanotube / polypropylene random copolymer composite resin powder.
[0107] In the obtained carbon nanotube / polypropylene random copolymer composite resin, the carbon nanotube content is 0.15%, and the molecular weight of the polypro...
Embodiment 2
[0109] Feed 0.2MPa of H into the 2L polymerization reactor filled with propylene gas under normal temperature and pressure. 2 , add 300g of liquid propylene and 30g of 1-butene, 5ml of triethylaluminum solution (heptane solution with a concentration of 1.8mol / L) and 500mg of montmorillonite BMMF / MgCl 2 / TiCl 4 Carrier-type catalyst, raise the reaction kettle to 70°C for polymerization, after 30 minutes of reaction, lower the temperature of the polymerization reaction kettle to room temperature, vent the residual gas in the polymerization reaction kettle, take out the polymer obtained by the polymerization reaction, and dry it in vacuum for 6 hours to obtain 210g of white montmorillonite / polypropylene random copolymer composite resin powder.
[0110] In the obtained montmorillonite / polypropylene random copolymer composite resin, the content of montmorillonite is 0.38%, and the molecular weight of polypropylene random copolymer is 2×10 5 g / mol, the molecular weight distributio...
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