A kind of polyester plastic for cable and preparation method thereof

A polyester plastic and cable technology, applied in the field of power materials, can solve problems such as limitations, and achieve the effects of easy large-scale production, tight integration, and simple process flow

Active Publication Date: 2015-09-09
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its biggest disadvantage is the existence of dendrite breakdown, which limits its use at higher voltages

Method used

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  • A kind of polyester plastic for cable and preparation method thereof
  • A kind of polyester plastic for cable and preparation method thereof
  • A kind of polyester plastic for cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of polyester plastics for electric cable, it is characterized in that, the mass percent of its raw material is:

[0048] Auxiliary 0.1%

[0049] Masterbatch 2%

[0050] Modified polyester 97.9%

[0051] The preparation method of described modified polyester, its concrete steps are:

[0052] (1) Dispersing inorganic particles under the condition of ethanol as a solvent; then adding aminopropyltrimethoxysilane under alkaline conditions, performing centrifugation after the reaction, and vacuum drying the solid to prepare surface functionalized inorganic particles;

[0053] The concentration of the inorganic particles in the alcohol solution is 1-20kg / m 3 , the pH of the system is controlled at 8.5-9.5, the reaction temperature is 60-75°C, and the reaction time is 150-240min;

[0054] The inorganic particles are nano-indium tin oxide, nano-indium antimony oxide and nano-titanium dioxide particles, the mass ratio of the three is 1:2:3, the average particle size is...

Embodiment 2

[0063] A kind of polyester plastics for electric cable, it is characterized in that, the mass percent of its raw material is:

[0064] Auxiliary 0.5%

[0065] Masterbatch 3%

[0066] Modified polyester 96.5%

[0067] The preparation method of described modified polyester, its concrete steps are:

[0068] (1) Dispersing inorganic particles under the condition of ethanol as a solvent; then adding aminopropyltrimethoxysilane under alkaline conditions, performing centrifugation after the reaction, and vacuum drying the solid to prepare surface functionalized inorganic particles;

[0069] The concentration of the inorganic particles in the alcohol solution is 1-20kg / m 3 , the pH of the system is controlled at 8.5-9.5, the reaction temperature is 60-75°C, and the reaction time is 150-240min;

[0070] The inorganic particles are nano-indium tin oxide, nano-indium antimony oxide and nano-titanium dioxide particles, the mass ratio of the three is 1:2:3, the average particle size is 1...

Embodiment 3

[0079] A kind of polyester plastics for electric cable, it is characterized in that, the mass percent of its raw material is:

[0080] Auxiliary 1%

[0081] Masterbatch 4%

[0082] Modified polyester 95%

[0083] The preparation method of described modified polyester, its concrete steps are:

[0084] (1) Dispersing inorganic particles under the condition of ethanol as a solvent; then adding aminopropyltrimethoxysilane under alkaline conditions, performing centrifugation after the reaction, and vacuum drying the solid to prepare surface functionalized inorganic particles;

[0085] The concentration of the inorganic particles in the alcohol solution is 1-20kg / m 3 , the pH of the system is controlled at 8.5-9.5, the reaction temperature is 60-75°C, and the reaction time is 150-240min;

[0086] The inorganic particles are nano-indium tin oxide, nano-indium antimony oxide and nano-titanium dioxide particles, the mass ratio of the three is 1:2:3, the average particle size is 10-...

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Abstract

The invention relates to a polyester plastic for cables and a preparation method thereof. The polyester plastic comprises the following raw materials by mass percent: 0.1-1% of auxiliary, 2-4% of color masterbatch and the balance of modified polyester. The preparation method specifically comprises the following steps of mixing modified polyester, the auxiliary and the color masterbatch according to a ratio, and then carrying out melting granulating, thus obtaining the polyester plastic. The preparation method is simple in process flow and easily achieves large-scale production. The polyester plastic and the preparation method have the positive effects that nano particles with an ultraviolet resisting function are introduced onto a polyester main chain by a method of chemical graft copolymerization, thus achieving the flame retardance of polyester; meanwhile, surface modified particles and polymerization raw materials are added to a polymerization device by adopting a method of in-situ polymerization modification to be used for dispersing physical nano particles, thus improving the uniformity of flame retardant particles in a copolymer after polymerization.

Description

【Technical field】 [0001] The invention relates to the technical field of power materials, in particular to a polyester plastic for cables and a preparation method thereof. 【Background technique】 [0002] The insulation layer of plastic insulated power cables is plastic, commonly used plastics are polyvinyl chloride, polyethylene, and cross-linked polyethylene. The plastic cable has simple structure, convenient manufacturing and processing, light weight, convenient laying and installation, and is not limited by laying drop. Therefore, it is widely used as medium and low voltage cables, and has a tendency to replace viscous impregnated oil-paper cables. Its biggest disadvantage is the existence of dendrite breakdown, which limits its use at higher voltages. [0003] The continuous and rapid growth of China's economy has provided a huge market space for cable products. The strong temptation of the Chinese market has made the world focus on the Chinese market. In just a few de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K9/06C08K3/22C08G63/20
Inventor 沈太英
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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