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High-voltage direct-current cable material as well as preparation method and applications thereof

A high-voltage direct current, cable material technology, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of easy aggregation of nanoparticles, increase of interface defects, uneven distribution, etc., to improve dispersion and compatibility , Inhibit the effect of moving and inhibiting accumulation

Active Publication Date: 2014-03-05
WUXI MINGZHU CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the extremely high specific surface area, nanoparticles are very easy to agglomerate, resulting in uneven distribution in polyethylene composites; and the high polarity of nanoparticles themselves makes them poorly compatible with low-polarity polyethylene matrix , resulting in increased interface defects

Method used

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  • High-voltage direct-current cable material as well as preparation method and applications thereof
  • High-voltage direct-current cable material as well as preparation method and applications thereof
  • High-voltage direct-current cable material as well as preparation method and applications thereof

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preparation example

[0030] Table 1 shows the material proportions used in the 4 examples and 3 comparative examples, and the units of the materials used are parts by weight. Among them, the materials used are:

[0031] A: Low-density polyethylene (LD100BW, ExxonMobil, USA);

[0032] B1: maleic anhydride grafted polyethylene (grafting rate 1.42%);

[0033]B2: Glycidyl methacrylate grafted polyethylene (grafting rate 0.71%);

[0034] B3: Acrylic grafted polyethylene (graft rate 0.47%)

[0035] C1: Aminopropyltrimethoxysilane-modified core-shell magnesium oxide silica nanoparticles (silane coupling agent content is 1.07%, the average particle size of magnesium oxide core is 40 nm, Nanjing Haitai Nano Materials Co., Ltd. , with a silica shell thickness of 20 nm);

[0036] C2: Aminopropyltriethylsilane-modified core-shell titania silica nanoparticles (silane coupling agent content is 1.53%, the average particle diameter of the titania core is 20 nm, Evonik Degussa, Germany, II SiO shell thickness...

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Abstract

The invention discloses a high-voltage direct-current cable material as well as a preparation method and applications thereof. The high-voltage direct-current cable material is technically characterized by being prepared from low density polyethylene, graft modified polyethylene, core-shell double-component inorganic nanofiller treated by a silane coupling agent, an antioxidant, a cross-linking agent, and an anti-copper agent. The preparation method comprises the following steps: firstly, mixing the low density polyethylene, the graft modified polyethylene, the antioxidant and the anti-copper agent; after melting polyethylene, adding the inorganic nanofiller treated by a silane coupling agent; and then adding the cross-linking agent to obtain a polyethylene nanocomposite. In the polyethylene nanocomposite prepared by the method, the inorganic nanofiller is uniformly dispersed in a polyethylene matrix and is excellent in compatibility with the matrix, and covalent bonds interact with each other, so that the mechanical property and the electrical property of the cable material can be effectively enhanced; the accumulation of charges in the internal space of the cable material can be remarkably inhibited, so that the cable material can serve as an insulating material for high-voltage direct-current cables.

Description

technical field [0001] The invention relates to a high-voltage direct-current cable material, and also relates to a preparation method of the high-voltage direct-current cable material and its application in high-voltage direct-current cables, belonging to the technical field of electrical insulating materials. Background technique [0002] HVDC power transmission technology has many advantages, such as low line cost, small line loss, no reactive power, convenient power connection, easy control and adjustment, especially in long-distance power transmission. The DC power system has been widely used and has become the current field of electrical engineering. research hotspot. High-voltage DC plastic cables are one of the key equipment for DC power transmission. Compared with oil-paper insulated DC cables, they have the advantages of small size, large transmission capacity, and maintenance-free. Therefore, the research and development of DC plastic insulated cables is very imp...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L51/06C08K13/06C08K9/06C08K9/10C08K3/22C08K3/36H01B3/44
CPCC08L23/06C08L2203/202C08L2207/066H01B3/441C08L51/06C08K13/06C08K9/06C08K9/10C08K2003/222C08K3/36C08K2003/2227
Inventor 于金花蒋一昆杨科
Owner WUXI MINGZHU CABLE
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