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Manufacturing method of conical composite rod
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A composite material and manufacturing method technology, applied in the direction of coating, etc., can solve the problems of composite material application hindrance, inability to fully utilize materials, and low axial modulus, so as to improve product strength and modulus, smooth appearance, and reduce material The effect of dosage
Active Publication Date: 2013-09-04
JIANGSU JIUDING NEW MATERIAL CO LTD
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Abstract
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Problems solved by technology
What is particularly prominent is that, according to the research of the power industry, the use of composite material rods can reduce the width of line corridors, thus saving land resources. However, due to the low axial modulus of the composite material rods produced by the above method, if the diameter of the rods is increased, the cost will inevitably increase. Too high; the pultrusion process can make the fiber direction consistent with the axial direction, and the fiber is kept in a straight line under the action of traction during the pultrusion process and can obtain a fiber content of 65-75%, and the axial modulus can reach more than 30GPa , but the pultrusion process can only produce equal-section rods, and the structure cannot make full use of the material
Therefore, the application of composite materials in transmission lines is hindered
Method used
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Embodiment 1
[0028] 4 layers of three-axis ordinary E fiber warp-knitted fabric is used, and the specification of the warp-knitted fabric is 1500 g / m 2 , its fiber structure is 900 g / m in the direction of 0° 2 , 300 g / m in ±30° direction 2 , made by the above process, the fiber content is 65%-70%, the product thickness is about 5MM, and the product performance is as follows:
[0030] The hoop modulus is 8-11GPa, and the bending strength is 75-85MPa.
Embodiment 2
[0032] 4 layers of three-axis ordinary E fiber warp-knitted fabric is used, and the specification of the warp-knitted fabric is 1500 g / m 2 , its fiber structure is 900 g / m in the direction of 0° 2 , 300 g / m in ±45° direction 2 , made by the above process, the fiber content is 65%-70%, the product thickness is about 5MM, and the product performance is as follows:
[0034] The hoop modulus is 9-12GPa, and the bending strength is 90-110MPa.
Embodiment 3
[0036] 4 layers of three-axis ordinary E fiber warp-knitted fabric is used, and the specification of the warp-knitted fabric is 1500 g / m 2 , its fiber structure is 900 g / m in the direction of 0° 2 , 300 g / m in ±60° direction 2 , made by the above process, the fiber content is 65%-70%, the product thickness is about 5MM, and the product performance is as follows:
[0038] The hoop modulus is 10-13GPa, and the bending strength is 110-130MPa.
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Abstract
The invention mainly discloses a manufacturing method of a conical composite rod, which mainly adopts a centrifugal forming technology and is characterized by comprising the following steps of: before the centrifugal forming technology, continuously winding a fiber fabric on a central spindle in a winding manner; spreading the fiber fabric in a rotating conical centrifugal mould to form a fiber pre-forming body with the same shape as the cavity of the mould; rotating the mould at a high speed; pouring resin from a small-caliber end of the mould, wherein the resin fills the gap of the fiber pre-forming body under the effect of centrifugal force; and after the resin is solidified, demoulding to obtain the finished product. The method disclosed by the invention can improve the product strength and modulus, forms a composite conical rod once, has high efficiency and smooth surface, does not need complicated polishing treatment, and thus can reduce material usage, lower cost and save investment under the same rigidity requirement.
Description
technical field [0001] The main task of the present invention is to provide a method for manufacturing a cone-shaped composite material rod, specifically a method for manufacturing a cone-shaped composite material rod that adopts centrifugal forming. Background technique [0002] Composite materials have light weight and high strength, corrosion resistance, weather resistance, appearance color can be adjusted at will, low temperature resistance, small thermal expansion coefficient, good wave permeability, electrical insulation and other characteristics different from traditional materials. Composite materials are used instead of steel. The technology of making light poles for road lighting with wooden poles and cement poles was first born in the United States in the 1960s. Due to the characteristics of easy installation, beautiful and durable, and maintenance-free, composite material light poles have been widely used at home and abroad. In recent years Recently, some progres...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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