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A nanoparticle/polypropylene random copolymer composite resin that can be used for 3D printing and its preparation method and application

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

Active Publication Date: 2016-02-24
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 nanoparticle / polypropylene random copolymer composite resin, on the one hand, repeated processing will lead to the degradation of polypropylene and its copolymer; on the other hand, high melt viscosity nanoparticle / polypropylene random copolymer composite resin It is difficult to prepare micron-scale fibers by spinning to meet the raw material requirements of 3D printing

Method used

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  • A nanoparticle/polypropylene random copolymer composite resin that can be used for 3D printing and its preparation method and application
  • A nanoparticle/polypropylene random copolymer composite resin that can be used for 3D printing and its preparation method and application

Examples

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preparation example Construction

[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 particle 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 ad...

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, 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 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 distribution is 4.0, ...

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Abstract

The invention discloses nanoparticle / polypropylene random copolymer compound resin for 3D printing, a preparation method and an application thereof. The nanoparticle / polypropylene random copolymer compound resin is obtained in a manner that propylene and a comonomer are subjected to a copolymerization reaction catalyzed by a catalyst including a nanoparticle carrier type catalyst. The compound resin is granular with granule diameters ranging from 50-1000 microns. Because the nanoparticle / polypropylene random copolymer compound resin is small and uniform in granule form, the compound resin can be directly used as a raw material in 3D printing with addition of a thermal stabilizer, and is very suitable for producing a nanoparticle / polypropylene random copolymer compound resin product which has a high melt viscosity and is difficult to mold, through 3D printing.

Description

technical field [0001] The invention relates to a nanoparticle / polypropylene random copolymer composite resin that can be used for 3D printing and its preparation method and application, in particular to a nanoparticle / polypropylene random copolymer composite resin that can be used for 3D printing and is prepared by polymerization in a polymerization tank. Regular copolymer composite resin 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/06C08F4/645C08F4/646C08K7/00C08K3/04C08K3/34C08K3/22C08K3/24
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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