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Novel preparation method for composite material power transmission tower member

A technology of composite materials and transmission towers, applied in the field of electric power industry, can solve problems such as shortened service life, environmental pollution, and easy aging, and achieve good dimensional stability, good shock absorption performance, and good insulation performance

Inactive Publication Date: 2012-06-27
山东海能铁塔制造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the transmission tower mainly adopts galvanized steel structure. The galvanized steel structure transmission tower is severely corroded in coastal areas and industrial pollution areas, and its service life is greatly shortened. In addition, the hot-dip galvanizing method itself has the disadvantages of high energy consumption and serious pollution.
From the perspective of performance, energy and environmental protection, composite materials can completely replace galvanized iron towers. The problems that composite transmission towers need to solve include: 1) Rigidity, the elastic modulus of composite materials is much lower than that of steel, and deformation under bending loads Larger, excessive deformation will affect the electrical safety distance of the transmission line; 2) Node connection, the node connection of the tower structure is a key issue in the application of composite materials; 3) Stability, the general operating environment of the transmission tower is relatively harsh, especially in In high heat and cold areas, resin materials are required to have high cold and thermal stability; 4) Aging, the resin matrix of composite towers is easily aged by ultraviolet rays, which is an important factor restricting the application of composite towers; 5) Manufacturing technology, the current composite Material components are mainly realized by pultrusion molding technology and winding technology. Research on resin formulations with anti-aging functions and diversified molding technologies is the key to popularize and apply composite towers; environmental pollution problems
[0004] At present, the resin systems used include epoxy resin, polyurethane resin, unsaturated polyester resin, etc. Chinese patents with application numbers 201020679506.7 and 201020679498.6 provide polyurethane composite profile production methods, and Chinese patents with application number 200910249925.9 provide a production method Molds and methods for large-diameter FRP cylinders. These patents all use a two-component resin room temperature curing system. The disadvantages are: 1) the complete curing time is long, the production efficiency is low and it is difficult to realize continuous production; 2) the production process There is solvent pollution, and waste products cannot be recycled
Composite materials processed with polyurethane resin have greater strength, impact resistance and greater specific strength than unsaturated polyester resin. The Chinese patent application number is 200720024505, which provides a maintenance-free steel-plastic composite communication tower production method. , there is a modified polyethylene plastic layer on the outer surface and / or inner surface of the tower rod section steel, but the polyethylene coating is used instead of the hot-dip galvanized layer for anti-corrosion, and it is not a real composite material tower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The square component of the composite material tower is prepared. The square is divided into rectangle and square. The square structure is used to increase the rigidity of the square tube, and the arc structure is used to reduce the stress concentration at the sharp corner. The thickness of the tube wall is 3-10mm. Its preparation method includes:

[0021] 1) Surface modification of glass fiber, impregnated with silane coupling agent to modify the surface of glass fiber, improve the compatibility between fiber and resin, and increase the bonding strength between glass fiber and resin;

[0022] 2) Preparation of the resin composition, the mass percent of the resin composition is E10 35%, E8 45%, curing agent 2%, plasticizer 17% and anti-ultraviolet agent 1.0%, quantitatively weigh various components, pulverize and stir Obtain a homogeneous powder mixture;

[0023] 3) Preparation of resin and short glass fiber mixture, the mass percentage of resin composition and short g...

Embodiment 2

[0026] The circular component of the composite material tower is prepared, and the rigidity of the square tube is increased by using a square structure, and the thickness of the tube wall is 3-10mm.

[0027] The mass percent of resin composition is E10 35%, E12 46%, curing agent 3.5%, plasticizer 15% and antiultraviolet agent 0.5%, and the mass percent of resin composition and short glass fiber is 45% and 55%, The mass percentages of resin and total glass fibers are 25% and 75%. Others are with embodiment 1.

Embodiment 3

[0029] Composite tower corner components are prepared, with a thickness of 3-10 mm, and a thickened structure is used to increase the rigidity of the corner parts.

[0030] The mass percent of resin composition is E12 30%, E14 50%, curing agent 4.5%, plasticizer 14% and antiultraviolet agent 1.5%, and the mass percent of resin composition and short glass fiber is 50% and 50%, The mass percentages of resin and total glass fibers are 22% and 78%. Others are with embodiment 1.

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Abstract

The invention belongs to the field of power industry, and discloses a novel preparation method for a composite material power transmission tower member. An epoxy resin-based composite material power transmission tower member is obtained by performing procedures such as mixing, heating, melting, molding, cooling and the like; a composite material consists of a resin composition and glass fiber; and a resin composition consists of 70-85 percent by mass of epoxy resin, 2-5 percent by mass of a curing agent, 7-20 percent by mass of a plasticizing agent and 0.5-1.5 percent by mass of an anti-ultraviolet ageing agent. The composite material power transmission tower member prepared with the invention has light weight and excellent performance, is environmentally-friendly, and can be used for completely replacing a zinc-plated steel part. The method has a simple production process and high production efficiency and is convenient to operate, and continuous automatic production can be realized.

Description

technical field [0001] The invention belongs to the field of electric power industry, and in particular relates to a method for preparing a novel composite material transmission tower component. Background technique [0002] At present, the transmission tower mainly adopts galvanized steel structure. The galvanized steel structure transmission tower is severely corroded in coastal areas and industrial pollution areas, and its service life is greatly shortened. In addition, the hot-dip galvanizing method itself has the disadvantages of high energy consumption and serious pollution. From the perspective of performance, energy and environmental protection, composite materials can completely replace galvanized iron towers. The problems that composite transmission towers need to solve include: 1) Rigidity, the elastic modulus of composite materials is much lower than that of steel, and deformation under bending loads Larger, excessive deformation will affect the electrical safety...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08L23/06C08L23/12C08L29/14C08K9/06C08K7/14
Inventor 孙军金丽勇管从胜
Owner 山东海能铁塔制造有限公司