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Clay reinforced homopolymerized polypropylene resin and preparation method thereof

A technology of homopolymerizing polypropylene and clay, applied in the field of resin and its preparation

Inactive Publication Date: 2012-07-11
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Previously, there were few studies on this aspect (Wei L.M., Tang T., Huang B.T..J.Polym.Sci.: Part A: Polym.Chem., 2004, 42(4): 941-949), successfully prepared with The study of nano-reinforced polyolefin resin with good particle appearance has not been reported.

Method used

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  • Clay reinforced homopolymerized polypropylene resin and preparation method thereof
  • Clay reinforced homopolymerized polypropylene resin and preparation method thereof
  • Clay reinforced homopolymerized polypropylene resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Under vacuum, fill the propylene monomer into the reaction kettle, add 100ml of hexane, 3.0ml of a heptane solution containing 5.5mmol of triethylaluminum, and 6.0ml of a heptane solution containing 0.55mmol of diphenyldimethoxysilane ml and 0.1 gram of clay-supported transition metal catalyst (the transition metal catalyst of clay support in the catalyst is TiCl 4 / ED / MgCl 2 , wherein the mass percentage of titanium element is 2.64wt%), the pressure in the kettle is constant at 5.0 atmospheres, the reaction temperature is 70°C, and the polymerization reaction is 0.5 hours. After the polymerization is completed, acidified ethanol is added to terminate the polymerization reaction, and deionized water is used Wash with ethanol, and dry in vacuum at 60°C to obtain 6.4 grams of nanoclay-enhanced isotactic polypropylene resin provided by the invention;

[0069] The appearance of the nanoclay reinforced isotactic polypropylene particles is spherical, and the particle size is...

Embodiment 2-5

[0081] According to the exact same method as in Example 1, only the solvent, the amount of triethylaluminum, and the amount of dimethyldiphenylsilane are replaced according to the data listed in Table 1 to prepare clay-reinforced homopolypropylene Resin, obtain embodiment 2-5 respectively. The polymerization activity of the polymerization reaction in each example, the isotacticity of the obtained clay-reinforced homopolypropylene resin and the content of clay in the obtained homopolypropylene resin product are listed in Table 1.

[0082] Each polymerization reaction condition and the detection result of gained homopolypropylene product among table 1, embodiment 1-5

[0083] Reality

[0084] Among the above-mentioned Examples 2-5, the apparent morphology of the isotactic polypropylene particles reinforced by the nanoclay obtained is spherical, and the particle size is between 20 and 100 microns. figure 1 No essential difference. The wide-angle X-ray and small-angle...

Embodiment 6

[0086] According to the same method as in Example 1, only the reaction pressure, reaction temperature, and reaction time were replaced according to the data listed in Table 2 to prepare a clay-reinforced homopolypropylene resin. The polymerization activity of the polymerization reaction, the isotacticity of the obtained homopolypropylene resin and the mass percentage of clay in the polymer product are listed in Table 2.

[0087] The apparent morphology of the particles of the obtained clay reinforced homopolypropylene resin prepared in this embodiment is spherical, such as Figure 6 As shown, the particle size is 20-100 microns; the wide-angle X-ray and small-angle X-ray scattering test results show that the nanoclay exists in the form of exfoliated nanosheets in the polypropylene matrix.

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Abstract

The invention discloses a clay reinforced homopolymerized polypropylene resin and a preparation method thereof. The clay reinforced homopolymerized polypropylene resin comprises clay and homopolymerized polypropylene resin. The preparation method comprises the step of performing a polymerization reaction on a propylene monomer, a cocatalyst, an electron donor and a clay load transition metal catalyst to obtain a product. Nanoclay reinforced polypropylene and copolymer resin prepared by the method has a spherical particle form, so that the aims that the polymer is not adhered to a kettle and is easy to flow and transmit are fulfilled, and clay layers are dispersed in a resin matrix uniformly in a stripping mode. The clay reinforced homopolymerized polypropylene resin provided by the invention has a wide application prospect in the fields of automobile parts, packaging materials, barrier materials, flame retardant materials, electric appliance materials and the like.

Description

technical field [0001] The invention relates to a resin and a preparation method thereof, in particular to a clay-reinforced homopolypropylene resin and a preparation method thereof. Background technique [0002] Clay is a kind of cheap and easy-to-obtain natural minerals combined by van der Waals force through nanosheets, because it can fully improve the performance of polymers with a small amount of addition (generally 3-5wt%), so Become a polymer nano-modifier for the purpose of strengthening, stiffening and improving heat resistance and barrier properties. [0003] In recent years, with the increasing consumption of polypropylene and its copolymers, the requirements for its properties have also been increasing. The research on the modification of combined clay is one of the most promising methods to obtain high-performance polypropylene resin, which also makes it one of the research hotspots in the field of polypropylene modification. Among them, polypropylene / montmori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K3/34C08K9/04C08F110/06C08F4/02C08F2/44
Inventor 董金勇秦亚伟黄英娟牛慧
Owner INST OF CHEM CHINESE ACAD OF SCI