Fiber-reinforced resin based composite core of overhead wire and preparation method of fiber-reinforced resin based composite core

A fiber-reinforced resin and overhead line technology, which is applied in the field of power transmission wires, can solve problems such as poor toughness, achieve the effects of improving high temperature resistance, excellent toughness and impact resistance, and improving compatibility

Active Publication Date: 2019-10-08
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented fiber-reinforced high-temperature-resistant resin-based thin rod is prepared from continuous fiber bundles and high-temperature-resistant resin through a pultrusion process. The high-temperature-resistant epoxy resin is epoxy resin or vinyl with a glass transition temperature between 100 and 250°C Polyester based, poor toughness

Method used

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  • Fiber-reinforced resin based composite core of overhead wire and preparation method of fiber-reinforced resin based composite core
  • Fiber-reinforced resin based composite core of overhead wire and preparation method of fiber-reinforced resin based composite core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A fiber-reinforced resin-based composite core for overhead lines, comprising an inner core and an outer core, the outer core is wrapped around the inner core, the inner core is carbon fiber, and the outer core is glass fiber, The inner core and the outer core are formed by heating and curing modified epoxy resin, and the weight percentages of carbon fiber, glass fiber and modified epoxy resin in the composite core are 30%, 35% and 35%;

[0035] Described modified epoxy resin is formulated from the raw materials of following parts by weight:

[0036] 50 parts of epoxy resin, 20 parts of styrene-maleic anhydride copolymer, 15 parts of epoxy lignin, 40 parts of curing agent and 20 parts of thinner.

[0037] The carbon fiber density is 1.6-2.0g / cm 3 , tensile strength 4.5-5.5GPa, elongation at break 1.5-2.1%, resistivity (1.5-2)×10 -3 Ω·cm.

[0038] Described glass fiber density is 2.2-2.8g / cm 3 , tensile strength 1.8-3.5GPa, elongation at break 3.4-5%, resistivity (1-1...

Embodiment 2

[0045] A fiber-reinforced resin-based composite core for overhead lines, comprising an inner core and an outer core, the outer core is wrapped around the inner core, the inner core is carbon fiber, and the outer core is glass fiber, The inner core and the outer core are heat-cured and molded by modified epoxy resin, and the weight percentages of carbon fiber, glass fiber and modified epoxy resin in the composite core are 35%, 31% and 34%;

[0046] Described modified epoxy resin is formulated from the raw materials of following parts by weight:

[0047] 55 parts of epoxy resin, 25 parts of styrene-maleic anhydride copolymer, 20 parts of epoxy lignin, 50 parts of curing agent and 15 parts of thinner.

[0048] The carbon fiber density is 1.6-2.0g / cm 3 , tensile strength 4.5-5.5GPa, elongation at break 1.5-2.1%, resistivity (1.5-2)×10 -3 Ω·cm.

[0049] Described glass fiber density is 2.2-2.8g / cm 3 , tensile strength 1.8-3.5GPa, elongation at break 3.4-5%, resistivity (1-1.4)×...

Embodiment 3

[0056] A fiber-reinforced resin-based composite core for overhead lines, comprising an inner core and an outer core, the outer core is wrapped around the inner core, the inner core is carbon fiber, and the outer core is glass fiber, The inner core and the outer core are formed by heating and curing modified epoxy resin, and the weight percentages of carbon fiber, glass fiber and modified epoxy resin in the composite core are 35%, 25% and 40%;

[0057] Described modified epoxy resin is formulated from the raw materials of following parts by weight:

[0058] 60 parts of epoxy resin, 28 parts of styrene-maleic anhydride copolymer, 18 parts of epoxy lignin, 45 parts of curing agent and 20 parts of thinner.

[0059] The carbon fiber density is 1.6-2.0g / cm 3 , tensile strength 4.5-5.5GPa, elongation at break 1.5-2.1%, resistivity (1.5-2)×10 -3 Ω·cm.

[0060] Described glass fiber density is 2.2-2.8g / cm 3 , tensile strength 1.8-3.5GPa, elongation at break 3.4-5%, resistivity (1-1...

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Abstract

The invention discloses a fiber-reinforced resin based composite core of an overhead wire and a preparation method of the fiber-reinforced resin based composite core. The composite core comprises an inner core and an outer core; the outer core coats around the inner core; the inner core is made of carbon fiber; the outer core is made of glass fiber; the inner core and the outer core are molded byheating and curing modified epoxy resin; and the weight percentages of the carbon fiber, the glass fiber and the modified epoxy resin in the composite core are 30-40%, 25-35% and 30-40%. The fiber-reinforced resin based composite core of the overhead wire, disclosed by the invention, is light in weight, high in mechanical strength, good in toughness and excellent in heat resistance.

Description

technical field [0001] The invention belongs to the technical field of power transmission wires, and in particular relates to a fiber-reinforced resin-based composite core for overhead lines and a preparation method thereof. Background technique [0002] With the development of society and economy, the power load supply increases rapidly, and the power transmission capacity of many overhead lines approaches or exceeds the design value, and the power transmission capacity of the power grid line needs to be improved urgently. The increase of line transmission capacity is restricted by many factors, the most important of which are: the resistance characteristics of the wire and the mechanical strength characteristics of the wire. When the transmission capacity of the line increases (the current through the wire increases), due to the existence of the wire resistance, the heat loss on the transmission line increases, and the temperature of the wire increases. Due to the softenin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L35/06C08L97/00C08K7/06C08K7/14C08J5/04
CPCC08J5/042C08J5/043C08J2363/00C08J2435/06C08J2497/00
Inventor 耿进锋史红伟姚德贵李红英孙建华时洪飞汪毅崔大田肖寒赵理钟恩涛
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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