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A kind of preparation method of ultrahigh molecular weight polyethylene nanocomposite material

A nano-composite material and ultra-high molecular weight technology, applied in the field of composite materials, can solve the problems of reinforcement, difficulty in exerting nano-phase, poor addition effect of coupling agent, etc., and achieve the effect of increasing compatibility

Active Publication Date: 2021-07-23
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Chinese patent CN101348587B discloses a preparation method of ultra-high molecular weight polyethylene / graphite nanosheet conductive composite material, including the following steps: according to the mass percentage of each raw material: ultra-high molecular weight polyethylene 85-99%, graphite 1-15% %; added to the grinding jar, and a coupling agent was added according to the ratio of 0.5% to 1.5% of the graphite mass; grinding balls were added according to a ball-to-material ratio of 1:1 to 6:1; the above ball mill jar was placed on a ball mill, and ball milled; The ball-milled material is dried to obtain a masterbatch; the masterbatch is formed by hot pressing to obtain an ultra-high molecular weight polyethylene / graphite nanosheet conductive composite material, but there are inorganic and organic compounds when the material is blended by the ordinary blending method. Due to the compatibility of the matrix and the poor effect of adding the coupling agent, due to the small particle size and large specific surface area of ​​the nano-components, it is easy to form large aggregates, and the agglomeration and slippage of the nano-components make it impossible to Effective reinforcement, it is difficult to play the role of nanophase, these problems need to be solved to improve the processability of UHMWPE

Method used

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  • A kind of preparation method of ultrahigh molecular weight polyethylene nanocomposite material
  • A kind of preparation method of ultrahigh molecular weight polyethylene nanocomposite material

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Experimental program
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Effect test

Embodiment 1

[0031] Nano-silica is first dispersed in the coupling agent treatment solution, the coupling agent is a silane coupling agent, the concentration of the coupling agent is 1%, the solvent is ethanol, stirred at room temperature for 8 minutes, filtered and dried; The nanomaterials are placed in an ethanol solution of acrylic acid, the monomer concentration is 25%, the initiator is benzophenone, the concentration is 1%, and the UV grafting reaction of the nanomaterials is realized by ultraviolet irradiation for 20 minutes under the protection of nitrogen, and then filtered and dried ; Disperse the grafted nanomaterials in a 0.5% ethanol solution of polyacrylamide, the specific gravity of the nanomaterials is 0.05%wt, and ultrasonically disperse for 10 minutes.

[0032]The ultra-high molecular weight polyethylene powder is dispersed in the nano-material solution treated with surfactant, the specific gravity of ultra-high molecular weight polyethylene is 100 parts, and the specific g...

Embodiment 2

[0035] Nano-silica is first dispersed in the coupling agent treatment solution, the coupling agent is a silane coupling agent, the concentration of the coupling agent is 5%, the solvent is ethanol, stirred at room temperature for 30 minutes, filtered and dried; The nanomaterials are placed in an ethanol solution of acrylic acid, the monomer concentration is 40%, the initiator is benzophenone, the concentration is 5%, and the ultraviolet grafting reaction of the nanomaterials is realized by ultraviolet irradiation for 20 minutes under the protection of nitrogen, and then filtered and dried ; Disperse the grafted nanomaterials in a 5% ethanol solution of polyacrylamide, the specific gravity of the nanomaterials is 0.25%wt, and ultrasonically disperse for 30 minutes.

[0036] The ultra-high molecular weight polyethylene powder is dispersed in the nano-material solution treated with surfactant. The specific gravity of the ultra-high molecular weight polyethylene is 100 parts, and t...

Embodiment 3

[0039] Nano-molybdenum disulfide is first dispersed in the coupling agent treatment solution, the coupling agent is a silane coupling agent, the concentration of the coupling agent is 1%, the solvent is acetone, stirred at room temperature for 8 minutes, filtered and dried; The nanomaterial is placed in an ethanol solution of methacrylic acid, the monomer concentration is 25%, the initiator is xanthone, and the concentration is 1%, and the ultraviolet grafting reaction of the nanomaterial is realized by ultraviolet irradiation for 20 minutes under the protection of nitrogen, and then filtered Drying; disperse the grafted nanomaterials in 0.5% ethanol solution of polyacrylamide, the specific gravity of the nanomaterials is 0.05%wt, and ultrasonically disperse for 10 minutes.

[0040] The ultra-high molecular weight polyethylene powder is dispersed in the nano-material solution treated with surfactant, the specific gravity of ultra-high molecular weight polyethylene is 100 parts,...

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Abstract

The invention relates to a preparation method of an ultra-high molecular weight polyethylene nanocomposite material, comprising the following steps: dispersing the nanomaterial in a coupling agent treatment solution, and stirring the nanomaterial to make the nanomaterial organic; and using ultraviolet grafting reaction to graft the nanomaterial branched monomers to increase the compatibility of nanomaterials and organic materials; the nanomaterials are filtered and dried, and then dispersed in a surfactant solution to ionize the nanomaterials; the ultra-high molecular weight polyethylene powder is dispersed In the nanometer material solution treated with the surfactant, the composite of the nanometer material and the ultra-high molecular weight polyethylene is realized by ultrasonic dispersion, and the ultrahigh molecular weight polyethylene nanocomposite material is obtained after filtering and drying. The method has the characteristics of simplicity, low cost, mild reaction conditions and wide range of applicable substrates, and has good development prospects.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of an ultrahigh molecular weight polyethylene nanocomposite material. Background technique [0002] Ultra-high molecular weight polyethylene (UHMW-PE) is a thermoplastic engineering plastic with a linear structure and excellent comprehensive properties. The world's first industrialization was realized in 1957 by Allied Chemical Company of the United States, and then Hoechst Company of Germany, Hercules Company of the United States, Mitsui Petrochemical Company of Japan, etc. were also put into industrial production. China was the first to successfully develop and put it into industrial production in 1964. Due to the conditions at that time, the molecular weight of the product was about 1.5 million. With the advancement of technology, the current molecular weight of the product can reach more than 1 million to 4 million. [0003] The d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K9/06C08K9/04C08K3/36C08K3/30C08K3/04
CPCC08K3/30C08K3/36C08K9/04C08K9/06C08K9/08C08K2003/3009C08K2201/011C08L2207/068C08K3/041C08L23/06
Inventor 李志夏晋程冯玲英赵文静沈贤婷洪尉
Owner SHANGHAI RES INST OF CHEM IND