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Composite insulator and preparation method thereof

A technology of composite insulators and insulators, applied in organic insulators, suspension/strain insulators, plastic/resin/wax insulators, etc. The effect of excellent toughening effect

Inactive Publication Date: 2018-06-22
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite insulator and its preparation method, which can solve the problem that the mechanical properties of the insulator are reduced and are prone to fracture when it is subjected to long-term stress and external force damage

Method used

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  • Composite insulator and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0042] One embodiment of the preparation method of the composite insulator of the present invention includes:

[0043] S1: adding nanoparticles and nanoparticle modifiers to the resin matrix and then pre-mixing to form a resin mother liquor;

[0044] Specifically, the resin matrix may be epoxy resin, unsaturated resin, polyurethane or phenolic resin.

[0045] The nanoparticles can be selected from one or more of titanium dioxide, carbon black, silicon carbide, silicon nitride, aluminum oxide, carbon nanotubes, graphene, fullerene and fumed silicon dioxide.

[0046] The nano particle modifier is a mixture of one or more of silane coupling agent, titanate coupling agent, aluminate coupling agent, double metal coupling agent, phosphate ester coupling agent and chromium complex.

[0047] In a specific embodiment, this step can be selected as:

[0048] S101: After adding the nanoparticles and the nanoparticle modifier into the resin matrix, perform pre-mixing in a mixing device f...

Embodiment 1

[0063] Composite insulators include insulators. The insulators are formed by winding resin glue and fiber reinforcement. The resin glue is epoxy resin glue, and the fiber reinforcement is glass fiber yarn. Among the raw materials for the preparation of epoxy resin glue: resin matrix It is an epoxy resin, the nanoparticles are fumed silica, and the nanoparticle modifier is a silane coupling agent.

[0064] The mass ratio of raw materials for the preparation of epoxy resin glue is: 100 parts of epoxy resin, 5 parts of fumed silica, 1.5 parts of silane coupling agent, and 80 parts of curing agent.

[0065] The preparation method of the above composite insulator includes:

[0066] Step 1: Add 5phr fumed silica and 1.5phr silane coupling agent to 100phr epoxy resin, and pre-mix for 45min in the equipment with main propeller speed of 300rpm and high-speed propeller speed of 2000rpm to obtain stable dispersion of gas phase two Silica epoxy resin master solution.

[0067] Step 2: Ad...

Embodiment 2 and Embodiment 3

[0071] Implementation 2 and Example 3, compared with Example 1, the preparation method adopted is similar, the fiber reinforcements are all glass fiber yarns, the difference is that the mass ratio of each raw material in the epoxy resin glue is different, in order to further illustrate each raw material The influence of the mass ratio of the composite insulator on the performance of the insulator, and 2 other comparative examples are cited, and the preparation method of the comparative examples is also similar to that of Example 1.

[0072] Please refer to Table 1 and Table 2 for details.

[0073] Table 1 is the raw material mass ratio of epoxy resin glue solution in embodiment 1-embodiment 3, comparative example 1-comparative example 2

[0074]

[0075] Table 2 shows the flexural strength of the insulators in Example 1-Example 3, Comparative Example 1-Comparative Example 2.

[0076] project

Example 1

Example 2

Example 3

Comparative example 1

C...

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Abstract

The invention discloses a composite insulator which comprises an insulator, wherein the insulator is molded from a resin glue solution and a fiber reinforcement through a winding or pultrusion process; the resin glue solution is prepared from raw materials: a resin substrate, nanoparticles, a nanoparticle modifier and a curing agent; and the nanoparticles are dispersed in the resin substrate and at interfaces of the resin substrate and the fiber reinforcing agent. The invention further discloses a preparation method of the composite insulator. By adopting the mode, the overall mechanical properties of the insulator are improved; because of improvement of overall mechanical properties of the insulator, the size of the insulator can be reduced under same working conditions, weight reductionand minimization of the composite insulator can be achieved, the production cost is reduced, and the preparation method of the composite insulator is simple in operation, relatively short in consumedtime and easy in industrial production.

Description

technical field [0001] The invention relates to the technical field of power transmission external insulation, and more specifically relates to a composite insulator and a preparation method thereof. Background technique [0002] Composite insulators are mainly composed of insulators, outer silicone rubber sheds, and end fitting flanges. The insulator is the core carrier for mechanical loads, and will be subjected to bending stress, tensile stress, and compressive stress during actual use. The mechanical properties of insulator materials directly determine the geometric size of composite insulators under the same working conditions, and the use of higher performance insulators to prepare composite insulators can reduce weight. [0003] Insulator materials are generally composed of reinforcing fibers and thermosetting resins. During the curing process of thermosetting resins, a large amount of internal stress will remain due to factors such as concentrated heat release and sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L75/04C08K9/06C08K3/36C08K7/14C08K7/06C08J5/04C08J5/10H01B3/40H01B3/30H01B17/04
CPCC08J5/043C08J5/042C08J5/10C08J2363/00C08J2375/04C08K3/36C08K7/06C08K7/14C08K9/06C08K2201/011H01B3/302H01B3/40H01B17/04
Inventor 马斌张栋葛方江蔡薛军何利万孟凡盛张俊杰
Owner JIANGSU SHENMA ELECTRIC CO LTD
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