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Clay-enhanced polypropylene copolymer resin and preparation method thereof

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

Inactive Publication Date: 2013-09-11
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-enhanced polypropylene copolymer resin and preparation method thereof
  • Clay-enhanced polypropylene copolymer resin and preparation method thereof
  • Clay-enhanced polypropylene copolymer resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Under vacuum, fill the reactor with mixed gas of propylene and ethylene (the molar ratio of propylene and ethylene is 20:1), add 100ml of toluene, 3.0ml of toluene solution containing 1.6mmol of methylalumoxane and 0.1g of clay in sequence Loaded transition metal catalyst (the polyolefin transition metal compound of clay load in the catalyst is rac-Me 2 Si(2-Me-4-Ph-Ind) 2 ZrCl 2 , wherein the mass percentage of zirconium element is 0.15%), the pressure in the kettle is constant at 5.0 atmospheres, the reaction temperature is 50° C., and the polymerization reaction is 0.5 hours. After the polymerization is completed, acidified ethanol is added to terminate the polymerization reaction, using deionized water and Washed with ethanol, dried in vacuum at 60° C. to obtain 12.4 grams of nanoclay reinforced polypropylene-ethylene copolymer resin provided by the invention;

[0061] The nanoclay reinforced propylene-ethylene copolymer resin particles are spherical in appearance...

Embodiment 2

[0072] Under vacuum state, propylene monomer is filled in the reaction kettle, add successively 100ml toluene, 10.0ml octene monomer, the toluene solution 3.0ml containing 1.6mmol methyl aluminoxane and 0.1 gram clay supported transition metal catalyst (in the catalyst Clay-supported polyolefin transition metal compound as rac-Me 2 Si(2-Me-4-Ph-Ind) 2 ZrCl 2 , wherein the mass percentage of zirconium element is 0.15wt%), the pressure in the kettle is constant at 5.0 atmospheres, the reaction temperature is 50°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 7.8 grams of nanoclay-reinforced propylene-octene copolymer resin provided by the invention;

[0073] The nano-clay reinforced propylene-octene copolymer resin particles are spherical in appearance and have a particle size of 50-200...

Embodiment 3

[0080] Under vacuum, fill the propylene monomer into the reaction kettle, add 100ml of toluene, 1.75mol of p-divinylbenzene, 10.0ml of toluene solution containing 6.0mmol of methylalumoxane, 0.54mmol of hydrogen and 0.1g of clay in sequence Loaded transition metal catalyst (the clay-supported polyolefin transition metal compound in the catalyst is rac-Me 2 Si(2-Me-4-Ph-Ind) 2 ZrCl 2 , wherein the mass percentage of zirconium element is 0.15%), the pressure in the kettle is constant at 5.0 atmospheres, the reaction temperature is 50° C., and the polymerization reaction is 0.5 hours. After the polymerization is completed, acidified ethanol is added to terminate the polymerization reaction, using deionized water and Washing with ethanol, drying in vacuo at 60° C., to obtain 4.2 grams of nanoclay provided by the present invention reinforced polypropylene copolymer resin terminated with vinylbenzene;

[0081]The nanoclay-reinforced polypropylene copolymer resin particle is spheri...

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Abstract

The invention discloses clay-enhanced polypropylene copolymer resin and a preparation method thereof. The resin comprises clay and polypropylene random copolymer resin. The preparation method comprises the following step of: polymerizing propylene monomers, comonomers, cocatalysts, electron donors and clay-supported transition metal catalysts to obtain the clay-enhanced polypropylene copolymer resin. Particles of the copolymer resin are spherical, the aims of inadhesion to a kettle, high fluidity and high transportability of the polymer are fulfilled, and clay lamellar layers are uniformly dispersed in a resin matrix in a peeling mode. The clay-enhanced polypropylene copolymer has wide application prospect in the fields of automobile parts, packing 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 polypropylene copolymer 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 / mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/16C08K3/34C08K9/04C08F210/06C08F210/16C08F4/02C08F2/44
Inventor 董金勇秦亚伟黄英娟牛慧
Owner INST OF CHEM CHINESE ACAD OF SCI