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Polypropylene nanocomposite material capable of being used for 3D printing, and preparation method and application thereof

A nanocomposite material and composite material technology, applied in the field of polypropylene nanocomposite material and its preparation, can solve the problems of polypropylene degradation and other issues

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for polypropylene materials, on the one hand, repeated processing will lead to degradation of polypropylene; on the other hand, polypropylene with high melt viscosity is difficult to prepare micron-scale fibers by spinning to meet the raw material requirements of 3D printing.

Method used

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  • Polypropylene nanocomposite material capable of being used for 3D printing, and preparation method and application thereof
  • Polypropylene nanocomposite material capable of being used for 3D printing, and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0084] 1. Preparation of Nanoparticle-supported Catalysts

[0085] The preparation steps of nanoparticle carrier type Ziegler-Natta catalyst:

[0086] 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:

[0087] Weigh 10g anhydrous MgCl 2 Put 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 ...

Embodiment 1

[0105] 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, 4ml of triethylaluminum solution (heptane solution with a concentration of 1.8mol / L) and 200mg of multi-walled carbon nanotubes / BMMF / MgCl 2 / TiCl 4 Carrier-type catalyst, raise the reactor to 70°C for polymerization, after 30 minutes of reaction, lower the temperature of the polymerization reactor to room temperature, vent the residual gas in the polymerization reactor, take out the composite material obtained by the polymerization reaction, and dry it in vacuum for 6 hours to obtain 150 g gray polypropylene / carbon nanotube nanocomposite powder.

[0106] In the obtained polypropylene / carbon nanotube nanocomposite material, the carbon nanotube content is 0.13%, and the molecular weight of polypropylene is 5×10 5 g / mol, the molecular weight distribution is 4.0, and the particle size of the composite material i...

Embodiment 2

[0108] 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, 5ml of triethylaluminum solution (heptane solution with a concentration of 1.8mol / L) and 150mg of montmorillonite / BMMF / MgCl 2 / TiCl 4 Carrier-type catalyst, the reactor is raised to 70°C for polymerization, after 30 minutes of reaction, the temperature of the polymerization reactor is lowered to room temperature, the residual gas in the polymerization reactor is vented, the polymer obtained by the polymerization reaction is taken out, and vacuum-dried for 6 hours to obtain 150 g of white polypropylene / montmorillonite composite powder.

[0109] In the obtained polypropylene / montmorillonite nanocomposite material, the content of montmorillonite is 0.1%, and the molecular weight of polypropylene is 2×10 5 g / mol, the molecular weight distribution is 8.0, and the particle size of the composite material is 300-500 μm.

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Abstract

The invention discloses a polypropylene nanocomposite material capable of being used for 3D printing, and a preparation method and an application thereof. The polypropylene nanocomposite material is obtained by utilizing a catalyst including a nanoparticle carrier-type catalyst and catalyzing propylene to polymerize; the composite material is granular in shape, and the particle diameter is 50-1000 [mu]m. Because the composite material has small and uniform particle morphology, the composite material can be directly used as a raw material of 3D printing by adding a heat stabilizer, and is especially suitable for 3D printing prepared polypropylene nanocomposite material products which have high melt viscosity and are difficult to process and mold.

Description

technical field [0001] The invention relates to a polypropylene nanocomposite material that can be used for 3D printing and its preparation method and application, in particular to a polypropylene nanocomposite material that can be used for 3D printing prepared by in-situ polymerization in a polymerization kettle and its preparation method and application. Background technique [0002] As a large class of important polymer materials, polypropylene has developed into one of the synthetic materials with the largest share in the world today due to its low price, low density, balanced and stable performance and other advantages. In recent years, in order to further improve the original performance of polypropylene and meet the requirements of different or higher-end application fields, the high performance of polypropylene has become an important direction for the development of polypropylene, and the composite of inorganic nanomaterials and polypropylene is the realization of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/22C08K3/24C08K3/36C08K7/00C08K3/04C08K7/06C08K3/34C08F110/06C08F4/645
CPCC08F110/06C08K3/04C08K3/22C08K3/24C08K3/346C08K3/36C08K5/1345C08K5/372C08K5/526C08K7/24C08K7/26C08K13/02C08K2003/2224C08K2003/2227C08K2003/2241C08K2003/2275C08K2201/003C08K2201/011C08K2201/014C08L2201/08C08L2314/06C08L23/12C08F4/6457
Inventor 董金勇王宁牛慧秦亚伟李春成符文鑫林学春马永梅孙文华赵宁
Owner INST OF CHEM CHINESE ACAD OF SCI
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