Production method for bus duct cable tray

Abstract

The invention relates to a production method for a bus duct cable tray. The production method comprises the following steps: taking high-density polyethylene and medium-density polyethylene as a composite modified matrix; after carrying out cross-linking modification on the composite modified matrix and a cross-linking agent under the action of an initiator, fusing, grafting and polymerizing the product and maleic anhydride to obtain a multi-grafted modified polymer; blending the multi-grafted modified polymer and inorganic rigid particles subjected to surface treatment, and modifying, whereinthe inorganic rigid particles are selected from one or more of nano calcium oxide, glass microspheres, nano silicon dioxide and nano magnesium carbonate; extruding the blended product and a processing auxiliary agent through a double-screw extruder; fusing, pre-plasticizing and extruding into a mold of a sizing platform and sizing; adding circulating water outside the mold, and cooling and molding in vacuum; then pulling through a pulling machine, and cutting and molding. The fragility, creep resistance, yield strength and machinability of the extruded and molded bus duct cable tray are improved on the anticorrosion and antistatic basis, and the service life is longer.

Description

technical field [0001] The invention relates to a production method of a bus duct bridge, belonging to the technical field of bus duct bridges. Background technique [0002] The inside of the busway bridge frame is composed of copper, aluminum and other busbar columns to form a busbar connection combination for high-voltage or low-voltage power transmission. It has increasingly replaced wires and cables, especially when the current capacity is large, making the laying of the entire power system more convenient. , the cost is lower. Busway bridges in the prior art are generally made of steel strips or alloy materials through bending, angle grinding and other processing techniques, which require riveting, welding, laying and installation on site, not only the processing cost is high, but the overall weight is heavy, and the manufacturing, transportation and construction are caused Inconvenient, and the steel or alloy bus duct bridge has corrosion and static electricity proble...

AI Technical Summary

Problems solved by technology

Busway bridges in the prior art are generally made of steel strips or alloy materials through bending, angle grinding and other processing techniques, which require riveting, welding, laying and installation on site, not only the processing cost is high, but the overall weight is heavy, and the manufacturing, transportation and construction are caused Inconvenient, and the steel or alloy busway bridge has corrosion and static electricity problems, the cost of replacement is high, and there are hidden dangers of electricity use.

[0003] In the prior art, the plates are generally treated and reprocessed by coating or spraying anti-corrosion coatings or electroplating, which not only has higher production costs, but also has a cumbersome process, which is not conducive to laying. The characteristics of good corrosion and insulation can significantly reduce costs and achieve anti-corrosion and anti-static effects. However, the existing plastic materials using low-density polyethylene resin have low tensile strength, poor pressure resistance and rigidity. The resin plastic of polyethylene has strong rigidity, but its creep resistance and processing performance are poor, and its brittleness is relatively large. The resin plastic of medium density polyethylene is in between, but its shrinkage rate is large and its yield strength is poor. Urgent improvement is needed for the production of busway bridges

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