Polyethylene-based nanometer composite and preparation method thereof

A nano-composite material and polyethylene-based technology, applied in the field of composite materials and dielectrics, to achieve the effects of compact crystal structure, good resistance to corona corrosion, and high AC breakdown field strength

Inactive Publication Date: 2017-06-23
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the improvement of the voltage level of the power system and the higher requirements for long-term, stable and safe operation of line equipment, a single polymer insulation can no longer meet the demand, and people need to improve the performance of polyethylene, which is very important for production. Both life and the development of science and technology have very important practical significance

Method used

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  • Polyethylene-based nanometer composite and preparation method thereof
  • Polyethylene-based nanometer composite and preparation method thereof
  • Polyethylene-based nanometer composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take low-density polyethylene 98.7wt% by weight percentage, nano-zinc oxide powder 1wt% after modification, antioxidant 0.3wt%, then it is mixed and joined in the open type rubber mixing machine and carries out melt blending, in mixing During the process, it is necessary to ensure that the room and the two rollers of the mill are clean and free of dust, and the composite material film on the roller is shoveled off with a spatula and put into the gap between the rollers to provide sufficient shearing force. After repeated 20 minutes, the obtained desired polyethylene-based nanocomposites. The temperature of the two rollers is 120° C., and the rotation speed is 40 r / min. Then put the bulk composite material into the required test mold, and use a flat vulcanizer to press and shape it. Among them, the temperature of the flat vulcanizer is 120°C, the pressure starts from 0, increases at a rate of 5MPa / time, and reaches 15MPa, and keeps at each pressure for 5min. Afterwards...

Embodiment 2

[0039] Take low-density polyethylene 96.7wt% by weight percentage, nano zinc oxide powder 3wt% after modification, antioxidant 0.3wt%, then it is mixed and joined in the open rubber mixing machine and carries out melt blending, in mixing During the process, it is necessary to ensure that the room and the two rollers of the mill are clean and free of dust, and the composite material film on the roller is shoveled off with a spatula and put into the gap between the rollers to provide sufficient shearing force. After repeated 20 minutes, the obtained desired polyethylene-based nanocomposites. The temperature of the two rollers is 120° C., and the rotation speed is 40 r / min. Then put the bulk composite material into the required test mold, and use a flat vulcanizer to press and shape it. Among them, the temperature of the flat vulcanizer is 120°C, the pressure starts from 0, increases at a rate of 5MPa / time, and reaches 15MPa, and keeps at each pressure for 5min. Afterwards, the...

Embodiment 3

[0041] Take low-density polyethylene 94.7wt% by weight percentage, nano zinc oxide powder 5wt% after modification, antioxidant 0.3wt%, then it is mixed and joined in the open type rubber mixing machine and carries out melt blending, in mixing During the process, it is necessary to ensure that the room and the two rollers of the mill are clean and free of dust, and the composite material film on the roller is shoveled off with a spatula and put into the gap between the rollers to provide sufficient shearing force. After repeated 20 minutes, the obtained desired polyethylene-based nanocomposites. The temperature of the two rollers is 120° C., and the rotation speed is 40 r / min. Then put the bulk composite material into the required test mold, and use a flat vulcanizer to press and shape it. Among them, the temperature of the flat vulcanizer is 120°C, the pressure starts from 0, increases at a rate of 5MPa / time, and reaches 15MPa, and keeps at each pressure for 5min. Afterwards...

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Abstract

The invention discloses a polyethylene-based nanometer composite and a preparation method thereof. The polyethylene-based nanometer composite is prepared from the following components in percentage by mass: 93.7-99.7wt% of polyethylene, 0-5wt% of modified nanometer zinc oxide and 0.3-1wt% of an antioxidant. The invention also discloses the preparation method of the polyethylene-based nanometer composite. As for the polyethylene-based nanometer composite prepared by the invention, under the condition with very little addition amount of the nanometer zinc oxide, the crystalline state of a polyethylene matrix can be changed, so that the particles of crystals become smaller, and the crystalline structure is more compact; and in addition, the polyethylene-based nanometer composite has higher alternating current breakdown strength and better corona corrosion resistance, and the use range of a polyethylene material is expanded.

Description

technical field [0001] The invention belongs to the field of dielectrics and composite materials, and more specifically relates to a polyethylene-based nanocomposite material and a preparation method thereof. Background technique [0002] Polyethylene (PE) is a thermoplastic resin widely used in various industrial fields. Polyethylene can be divided into low-density polyethylene (LDPE) and high-density polyethylene (HDPE) according to density. LDPE is also known as high-pressure polyethylene, which has good molding processability, but the material is soft and has poor high temperature resistance. Polyethylene has excellent electrical insulation properties and chemical stability, is non-toxic and tasteless, insoluble in water at room temperature, and is not easily corroded by general acids and alkalis. Therefore, in recent years, most of the electrical energy transmission in the power system and the insulating materials of the power equipment use polyethylene as the base po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K9/06C08K3/22C08K5/134
CPCC08K9/06C08K3/22C08K5/1345C08K2003/2296C08K2201/011C08L2207/066C08L23/06
Inventor 张晓虹白立阳张天旭马天骁
Owner HARBIN UNIV OF SCI & TECH
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