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Process for preparing functional polyolefins resin mixed with rare earth compound

A technology of polyolefin resin and rare earth oxide, which is applied in the field of preparation of functionalized polyolefin resin, can solve the problems of easy homopolymerization, difficult control of free radical concentration and lifespan, low grafting rate and grafting efficiency of functional monomers, etc. question

Inactive Publication Date: 2010-01-27
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the decomposition rate of organic peroxides is affected by its chemical structure and processing temperature, the concentration and lifetime of the generated free radicals are difficult to control and unevenly distributed
Therefore, functionalized polyolefin resins prepared with organic peroxides as initiators have the following disadvantages: polyolefin resins are prone to degradation, crosslinking, or side reactions that coexist with degradation and crosslinking, resulting in poor mechanical properties or processability; The grafting rate and grafting efficiency of functional monomers are low and prone to homopolymerization
The research work on polyolefin melt-grafted functional monomers involving rare earth oxides has not yet been reported in literature and patents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Polypropylene, wherein the weight content of ethylene is 5%, and its melt flow rate is 1.0g / 10min (190°C, 2.16kg); the purity of rare earth oxide is 99.9%, and the average particle size is 1.0-2.0μm; Dicumylbenzene (DCP), analytically pure; maleic anhydride (MAH), analytically pure. Take the above-mentioned polypropylene resin that is 100 parts by weight, and use it as the benchmark for the ratio of parts by weight of other materials, correspondingly take yttrium oxide, lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, Samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide or lutetium oxide, respectively premixed with 0.20 parts by weight of DCP and 2.0 parts by weight of MAH in a drum mixer 2 minutes to obtain a premix.

[0021] The above-mentioned premixed material is sent to the reactive twin-screw extruder. The screw diameter of the extruder is 30mm, the length...

Embodiment 2

[0023] Polypropylene, whose melt flow rate is 0.7g / 10min (190°C, 2.16kg)); the purity of rare earth oxides is 99.9%, and the average particle size is 1.0-2.0μm; dicumyl peroxide (DCP), Analytical pure; maleic anhydride (MAH), analytically pure. Take the above-mentioned polypropylene resin that is 100 parts by weight, and use it as the benchmark of other material parts by weight, correspondingly take yttrium oxide, lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, Samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide or lutetium oxide, respectively premixed with 0.20 parts by weight of DCP and 2.0 parts by weight of MAH in a drum mixer 2 minutes to obtain a premix. The reaction equipment and all the other reaction conditions and steps are the same as in Example 1, and the test results are listed in Table 2.

Embodiment 3

[0025] Linear low-density polyethylene (LLDPE), in which the weight content of 1-butene is 6±0.5%, and its melt flow rate is 1.0g / 10min (190°C, 2.16kg); the purity of rare earth oxides is 99.9% , the average particle size is 1.0~2.0μm; 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, analytically pure; glycidyl methacrylate (GMA), analytically pure. Take the above-mentioned LLDPE resin that is 100 parts by weight, and use it as the benchmark of other material parts by weight, correspondingly take 0.0030 moles of yttrium oxide, lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, Europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide or lutetium oxide, respectively with 2,5-dimethyl-2,5-bis(tert-butylperoxy) 0.25 parts by weight of hexane and 6.0 parts by weight of GMA were premixed in a drum mixer for 5 minutes to obtain a premix.

[0026] The above-mentioned premixed material...

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Abstract

A process for preparing the functional polyolefin resin includes such steps as mixing polyolefin resin, RE compound including RE-naphthenic acid complex and RE oxide, peroxide as trigger and functional monomer, and reaction. Its advantages are high machinability and high strength of fused body.

Description

technical field [0001] The invention belongs to the technical field of preparation of functionalized polyolefin resin participated by rare earth oxide. Background technique [0002] Polyolefin resin has many advantages such as easy availability of raw materials, low price, excellent comprehensive physical and mechanical properties, chemical corrosion resistance, non-toxicity, and easy processing. It is widely used in packaging, home appliances, automobiles, decoration, construction and other fields. Since polyolefin resin is a non-polar polymer and lacks reactive groups or polar groups, its hydrophilicity, dyeability, adhesion to polar materials such as metals, ceramics, and glass, and adhesion to polyamides, polyesters, etc. The compatibility of polar polymers is poor, which largely limits their application range. Graft copolymerization of reactive or polar unsaturated functional monomers with polyolefin resins to prepare functionalized polyolefin resins is a general metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02C08F257/02C08F2/44B29C47/00B29C35/02
Inventor 朱连超唐功本殷敬华
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES