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Basalt fiber insulator core rod

A basalt fiber and insulator technology, applied in insulators, electrical components, circuits, etc., can solve the problems of network mutual inductance, mandrel breakage, pollution flashover, etc., and achieve the effect of large safety operation margin, high mechanical strength and stable performance.

Active Publication Date: 2020-04-28
衡水瑞纤新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve a series of problems that occur when glass fiber is used to prepare large-diameter cores, such as the diameter of glass fiber cores cannot exceed 40mm, the strength of large-diameter cores is low, and cannot meet the 1000MPa required by the specification; the creep of glass fiber cores The fracture stress is 30%fu. Under a very low load, the mandrel fiber gradually breaks, and eventually the whole mandrel breaks; the glass fiber volume mandrel is broken down due to poor insulation, and network mutual inductance and pollution flashover accidents occur; The maximum temperature of the fiber mandrel production process is 150°, which cannot meet the process requirements of large-diameter mandrels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A basalt fiber insulator core rod, the fiber is made of 2000tex basalt fiber roving, the tensile strength is 2600MPa, and the elastic modulus is 85GPa; the resin is made of high temperature resistant modified epoxy resin, the tensile strength is 82MPa, the bending strength is 88MPa, the elasticity Modulus 950MPa. Basalt fiber volume resistivity 1.45×10 13 Ω m, volume resistivity of high temperature resistant resin 1.3×10 13 Ω·m, glass transition temperature 160°C. After the basalt fiber is heat-treated, the tensile breaking strength of the yarn is 0.55 / (N / tex), and the strength retention rate is 66%.

[0037] The basalt fiber insulator mandrel adopts the pultrusion molding process. Firstly, the continuous basalt fiber roving is soaked in the resin. Under the action of the traction force, the traction speed is 1m / min. By heating the mold, it is rapidly solidified and formed at a solidification temperature of 200°C to form basalt. The fiber insulator mandrel has a circ...

Embodiment 2

[0039] A basalt fiber insulator core rod, the fiber is made of 2400tex basalt fiber roving, the tensile strength is 3400MPa, and the elastic modulus is 88GPa; the resin is made of high temperature resistant modified epoxy resin, the tensile strength is 85MPa, the bending strength is 90MPa, Modulus 1000MPa. Basalt fiber volume resistivity 1.48×10 13 Ω m, volume resistivity of high temperature resistant resin 1.35×10 13 Ω·m, glass transition temperature 160°C. After the basalt fiber is heat-treated, the tensile breaking strength of the yarn is 0.56 / (N / tex), and the strength retention rate is 66%.

[0040] The basalt fiber insulator mandrel adopts the pultrusion molding process. First, the continuous basalt fiber roving is soaked in the resin. Under the action of the traction force, the traction speed is 1m / min. By heating the mold, it is rapidly solidified and formed at a solidification temperature of 220°C to form basalt. The fiber insulator mandrel has a circular section an...

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Abstract

The invention provides a basalt fiber insulator core rod. The core rod comprises basalt fibers, high-temperature-resistant resin and a curing agent, wherein the core rod is formed by adopting a pultrusion process, the section of the core rod is round or similar to a circle, the volume fraction of the basalt fiber is 65-75%, the volume fraction of the high-temperature-resistant resin is 20-40%, andthe volume fraction of the curing agent is 5-10%. According to the basalt fiber insulator core rod, the tensile strength is 1200-1500 MPa, the bending strength is 1200-1400 MPa, the mechanical strength is high, the requirement of the electric power industry for a large-diameter high-strength core rod is met, meanwhile, the structure is reliable, the performance is stable, the safe operation margin is large, flashover, breakdown and pollution flashover accidents are avoided, and safe operation of a line is guaranteed. Besides, the basalt fiber insulator core rod is high in temperature resistance and insulating property, the requirements of high-voltage and extra-high-voltage circuits for large-diameter high-strength core rods are met, and the increasingly-developed requirements of the power industry are met.

Description

technical field [0001] The invention belongs to the field of composite materials used in the electric power industry, and in particular relates to a basalt fiber insulator mandrel. Background technique [0002] In the power industry, different types of insulators need to withstand the test of special operating environments such as long-term icing, high altitude, pollution, high temperature, low temperature, ultraviolet light, rain, lightning, earthquake, typhoon, etc. With the increase of the transmission voltage level, ceramics, There are various restrictive factors in insulating products made of glass materials, and the application range and specific gravity are getting smaller and smaller. Composite insulators are widely used in domestic transmission lines because of their excellent mechanical and electrical properties, excellent anti-fouling performance, light weight, simple manufacturing process, diameter and height are not easily limited by the manufacturing process, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/38C08L63/00C08K7/10
CPCH01B17/38C08K7/10C08L63/00
Inventor 汪昕吴智深刘霞陈兴芬蒋丽娟
Owner 衡水瑞纤新材料科技有限公司
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