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Composite material for ship shore power cable insulating layer, and preparation method thereof

A composite material and cable insulation technology, applied to rubber insulators, organic insulators, etc., can solve problems such as shortened cable life, and achieve good mechanical strength, multiple functions, superior heat resistance and aging resistance.

Inactive Publication Date: 2019-07-23
TSINGHUA UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a composite material for the insulation layer of ship shore power cables and its preparation method. Defects such as shortened cable life due to reduced mechanical properties during use

Method used

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  • Composite material for ship shore power cable insulating layer, and preparation method thereof
  • Composite material for ship shore power cable insulating layer, and preparation method thereof
  • Composite material for ship shore power cable insulating layer, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0036] Composite material test method is as follows in the specific embodiment:

[0037] Stress and strain: tested according to GB / T 8815 standard

[0038] Breakdown strength: tested according to GB / T 1408.1-2006 standard, sample thickness is 1mm±0.1mm. According to the weibull distribution data processing method, the obtained data is processed and plotted, such as figure 2 shown.

[0039] Dielectric constant: The sample is made into a small piece with a diameter of 1cm2, and the front and back sides are coated with silver electrodes, and the material is tested by an impedance analyzer (ESPEC CORP SU-261) at a frequency of 102Hz-106Hz at room temperature. test.

[0040] Measurement of volume resistivity: according to the GB / T 1408.1-2006 standard test, the sample thickness is 2mm±0.1mm, and the test voltage is 100V.

Embodiment 1

[0042] EPDM insulation layer material for ship shore power cables, the components and their mass parts in the raw materials are:

[0043] 10 parts of low-density polyethylene, 90 parts of EPDM rubber, 3 parts of nano-zinc oxide, 0.6 parts of stearic acid, 0.6 parts of 2-mercaptobenzimidazole, 0.3 parts of triallyl isocyanurate TAIC, white carbon 18 parts of black, 0.6 parts of sulfur powder, 2.1 parts of dicumyl peroxide DCP, 19 parts of white oil. The particle size of the nano zinc oxide is 50±10nm;

[0044] Concrete preparation operation is as follows:

[0045] (1) Weigh the raw materials according to the weight of the ingredients in the formula, mix all the raw materials evenly, then raise the temperature of the rheometer to 100°C, and the speed is 60r / min, then add the mixed raw materials, and then seal the mixing tank , making the materials melt and blend in the blending tank for 10 minutes;

[0046] (2) After the torque of the material in the rheometer reaches the equ...

Embodiment 2

[0052] EPDM insulation layer material for ship shore power cables, the components and their parts by mass are:

[0053] 30 parts of low-density polyethylene, 70 parts of EPDM rubber, 3 parts of nano-zinc oxide, 0.6 parts of stearic acid, 0.6 parts of 2-mercaptobenzimidazole, 0.3 parts of triallyl isocyanurate TAIC, 18 parts of white carbon black, 0.6 parts of sulfur powder, 2.1 parts of DCP, 20 parts of white oil. The particle size of the nano zinc oxide is 50±10nm;

[0054] Concrete preparation operation is as follows:

[0055] (1) Weigh the raw materials according to the weight of the ingredients in the formula, mix all the raw materials evenly, then raise the temperature of the rheometer to 100°C, and the speed is 60r / min, then add the mixed raw materials, and then seal the mixing tank , making the materials melt and blend in the blending tank for 10 minutes;

[0056] (2) After the torque of the material in the rheometer reaches the equilibrium value, the EPDM / LDPE compo...

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Abstract

The invention discloses a composite material for a ship shore power cable insulating layer, and a preparation method thereof. The composite material is prepared from the following raw material ingredients in parts by mass: 50-90 parts of EPDM (Ethylene-Propylene-Diene Monomer), 10-50 parts of LDPE (Low Density Polyethylene), 1-5 parts of nanometer zinc oxide, 0.2-1 part of a rubber vulcanization accelerator, 0.2-1 part of a rubber antiager, 0.1-0.5 part of a cross-linking agent, 6-30 parts of an enhancer, 0.5-5 parts of a vulcanizer and 20 parts of white oil. The preparation method comprises the following steps: firstly, uniformly mixing each raw material ingredient at a constant temperature, then, performing melt blending on the mixed raw material, cooling, and putting in a plate vulcanizing machine to be subjected to temperature rise and pressurization processing to prepare the composite material for the ship shore power cable insulating layer. The produced insulating layer materialfor a power cable has the advantages that mechanical strength, tensile strength and toughness are obviously improved, and meanwhile, the composite material has good electrical insulating properties.

Description

technical field [0001] The invention relates to an insulating material for cables, in particular to a composite material for an insulating layer of a ship's shore power cable and a preparation method thereof. Background technique [0002] With the increasing call for low-carbon emission reduction, the traditional way of using heavy oil or diesel power generation has been gradually eliminated, and it has become a trend to provide shore power for berthing large ships through ports. The electrical properties, mechanical properties and salt spray resistance of the currently used shore power cables are difficult to meet the requirements for use. Ethylenepropylene diene monomer (EPDM) is widely used in wire and cable industries due to its excellent properties such as water resistance, aging resistance, chemical corrosion resistance and electrical insulation. However, due to the poor mechanical properties of pure EPDM (tensile strength 7M / mm 2 ), general electrical performance (b...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/06C08L91/06C08K13/02C08K3/22C08K5/09C08K5/378C08K3/36H01B3/28B29C35/02
CPCB29C35/02C08K2003/2296C08K2201/011C08L23/16C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/03C08L2207/066C08L2312/00H01B3/28C08L23/06C08L91/06C08K13/02C08K3/22C08K5/09C08K5/378C08K3/36
Inventor 党智敏王思蛟
Owner TSINGHUA UNIV
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