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Hybrid fiber pultruded composite material, and preparation method and molding device thereof

A composite material and hybrid fiber technology, which is used in cable/conductor manufacturing, cables, insulated conductors, etc., can solve the problems of small sag at high temperature, low coaxiality and roundness, and low glass transition temperature. Corrosion performance, improved coaxiality, cost reduction effect

Inactive Publication Date: 2011-09-07
BEIJING UNIV OF CHEM TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the technical problems in the existing products and methods that the coaxiality and roundness of the product are not high, and the glass transition temperature of the matrix resin system is low, so that the product cannot meet the heat resistance requirement, and provides a Hybrid fiber pultrusion composite material with high strength, low dead weight, good toughness, small high temperature sag, and good corrosion resistance coaxial structure, its manufacturing method and equipment

Method used

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  • Hybrid fiber pultruded composite material, and preparation method and molding device thereof
  • Hybrid fiber pultruded composite material, and preparation method and molding device thereof
  • Hybrid fiber pultruded composite material, and preparation method and molding device thereof

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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the carbon fiber core layer 11 of the hybrid fiber pultrusion composite material that realizes the coaxial structure uses 12K Toray T700 carbon fiber in Japan, and the glass fiber shell layer 12 uses E glass fiber from Owens Corning SE8400LS, and the inner carbon fiber core layer 11 has a diameter of 7 mm, the overall diameter of the pultruded composite is 9.5 mm, and the outer fiberglass shell 12 has a thickness of 2.5 mm.

[0023] Such as figure 2 As shown, the diameter of the carbon fiber (right side) is 7 μm, and the diameter of the glass fiber (left side) is 23 μm. The interface between the carbon fiber core layer and the glass fiber shell layer in the pultruded composite material is well bonded. The fiber volume fraction of the core and sheath is about 70%.

[0024] Such as image 3 As shown, the core layer carbon fiber 1 is pulled out from the creel with a certain tension, passes through a dryer, and removes surface moisture under t...

Embodiment 2

[0027] The carbon fiber core layer 11 of the hybrid fiber pultrusion composite material that realizes the coaxial structure adopts 6K T300 carbon fiber of PetroChina Jihua Company, and the glass fiber shell layer 12 adopts 8K E glass fiber of Saint-Gobain Company in France, and the diameter of the inner carbon fiber core layer 11 is 6 mm, the overall diameter of the pultruded composite material is 8 mm, and the thickness of the outer glass fiber shell 12 is 2 mm. The fiber volume fraction of the core and sheath is about 65%.

[0028] Such as image 3 As shown, the core layer carbon fiber 1 is pulled out from the creel with a certain tension, passes through a dryer, and removes surface moisture under the condition of 60-100°C. Next, the carbon fiber of the core layer is divided into 20 bundles of fibers by a yarn splitter and enters the front molding tank 8, and the preheating temperature of the front molding tank is 70°C. The resin in the glue tank of the front mold is a med...

Embodiment 3

[0031] The carbon fiber core layer 11 of the mixed fiber pultrusion composite material that realizes the coaxial structure adopts 6K T300 carbon fiber from Toray Corporation of Japan, and the glass fiber shell layer 12 adopts 8K E glass fiber from Owens Corning Company, and the diameter of the inner carbon fiber core layer is The pultruded composite has an overall diameter of 12 mm and an outer fiberglass shell of 4 mm in thickness. The fiber volume fraction of the core and sheath is about 70%.

[0032] Such as image 3 As shown, the core layer carbon fiber 1 is pulled out from the creel with a certain tension, passes through the dryer, and removes the moisture on the surface under the condition of 80-100°C. Next, the carbon fiber of the core layer is divided into 20 bundles of fibers by a yarn splitter and enters the front molding tank 8, and the preheating temperature of the front molding tank is 70°C. The resin in the plastic tank of the front mold is a medium-high temper...

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Abstract

The invention relates to a hybrid fiber pultruded composite material, and a preparation method and a molding device thereof, which solve the technical problems in the conventional product and the conventional method that the coaxiality and circularity of the product are low and that the heat resistance of the product cannot meet requirements because of the low glass transition temperature of a substrate resin system. The hybrid fiber pultruded composite material comprises an inner core layer and an outer shell layer, wherein the inner core layer consists of a plurality of beams of unidirectionally arranged carbon fiber composite materials; the outer shell layer consists of a plurality of beams of unidirectionally arranged glass fiber composite materials; the outer shell layer is uniformlyclad outside the inner core layer; the inner core layer and the outer shell layer have circular sections; the outer shell layer is uniformly distributed around the inner core layer in parallel along an axial direction; the two layers are kept highly coaxial; and the inner core layer has the diameter of 6 to 8mm, and the outer shell layer has the thickness of 2 to 4mm. By the preparation method and the molding device for the hybrid fiber pultruded composite material provided by the invention, the prepared product has strong strength, low dead weight, high toughness, low high temperature sag and high corrosion resistance.

Description

technical field [0001] The invention relates to a component of a support structure, its manufacturing method and equipment, in particular to a hybrid fiber pultrusion composite material, its manufacturing method and forming device. Background technique [0002] At present, in the field of power transmission and transformation lines, traditional high-voltage overhead conductors are composed of steel-cored aluminum stranded wires, in which the steel core plays a role in carrying loads. Since increasing the current carrying capacity will increase the heat generation of the line, while the mechanical properties of the traditional steel-reinforced aluminum stranded wire will decrease significantly with the increase of temperature, which will directly lead to the increase of the sag of the wire and the increase of the swing radius of the wire body, thus affecting the unit. The span of the root conductor, the height of the tower and the wiring regulations. At the same time, the tr...

Claims

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Application Information

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IPC IPC(8): H01B7/18H01B13/00C08L63/00C08K7/14C08K7/06
Inventor 杨小平罗昱明刘渤涛常德友张杰
Owner BEIJING UNIV OF CHEM TECH
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