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A kind of polyester-polyvinyl chloride composite plastic for electric wire and its preparation method

A technology of polyvinyl chloride and composite plastics, applied in plastic/resin/wax insulators, organic insulators, etc., can solve problems such as limitations, and achieve the effect of improving uniformity, simple process flow, and easy large-scale production

Active Publication Date: 2016-03-02
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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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-polyvinyl chloride composite plastic for electric wire and its preparation method
  • A kind of polyester-polyvinyl chloride composite plastic for electric wire and its preparation method
  • A kind of polyester-polyvinyl chloride composite plastic for electric wire and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A kind of polyester-polyvinyl chloride composite plastics for electric wire is characterized in that, the mass percent of its raw material is:

[0058]

[0059] The auxiliary agent is SAG compatibilizer, purchased from Nantong Rizhisheng Company.

[0060] The blue masterbatch is a commercially available product, purchased from Shanghai Shengxia Chemical Co., Ltd.

[0061] The preparation method of described modified polyester, its concrete steps are:

[0062] (1) Disperse inorganic particles under the condition of alcohol as a solvent, the alcohol solution is ethanol, methanol or isopropanol solution; then under alkaline conditions, add aminopropyltrimethoxysilane, and carry out centrifugation after reaction , vacuum-drying the solid to obtain surface-functionalized inorganic particles;

[0063] The concentration of the inorganic particles in the alcohol solution is 5-35kg / m 3 , the pH of the system is controlled at 8.5-9.5, the reaction temperature is 60-75°C, an...

Embodiment 2-10

[0082] A polyester-polyvinyl chloride composite plastic for electric wires is characterized in that the mass percentage of its raw materials is as shown in Table 1.

[0083] Table 1

[0084]

[0085] Example 5

[0086] The preparation method of the modified polyester of embodiment 2-5 is the same as embodiment 1.

Embodiment 6

[0087] The preparation method of the modified polyester of embodiment 6, its concrete steps are:

[0088] (1) Dispersing inorganic particles under the condition of alcohol as a solvent, the alcohol solution is ethanol, methanol or isopropanol solution; then under alkaline conditions, add aminopropyltrimethoxysilane, centrifuge after reaction, and The solid is vacuum-dried to prepare surface-functionalized inorganic particles;

[0089] The concentration of the inorganic particles in the alcohol solution is 5-35kg / 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;

[0090] The inorganic particles are nano-indium tin oxide and nano-indium antimony oxide, the mass ratio of the two is 1:1; the average particle size is 10-50 nm, and ultrasonic dispersion is used for 40 minutes in the alcohol solution dispersion process;

[0091] (2) Then under the protection of nitrogen, use surface functionalized inorgani...

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Abstract

The invention relates to a polyester-polyvinyl chloride composite plastic for wires and a preparation method thereof. The polyester-polyvinyl chloride composite plastic is characterized by comprising the following raw materials by mass percent: 1-10% of modified polyester, 0.1-1% of auxiliary, 0.1-5% of blue color masterbatch and the balance of modified polyvinyl chloride. The preparation method comprises the following steps of mixing modified polyester, the auxiliary, the blue color masterbatch and modified polyvinyl chloride according to a ratio, and then carrying out melting granulating, thus obtaining the polyester-polyvinyl chloride composite plastic. The preparation method is simple in process flow and easily achieves large-scale production.

Description

【Technical field】 [0001] The invention relates to the technical field of power materials, in particular to a polyester-polyvinyl chloride composite plastic for electric wires 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L67/00C08L53/02C08L67/02C08L23/06C08K13/06C08K9/06C08K3/22C08K3/04C08G63/20H01B3/44H01B3/42
Inventor 张立王颖韬沈太英金文东
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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