A production process of composite cable guide with adhesive layer

Abstract

The invention relates to a production technology of a composite cable duct with an adhesive layer. The production technology of the composite cable duct with the adhesive layer comprises the following steps: preparing the silane coupling agent solution; preparing an inner tube through a pipe making machine; preparing adhesive; sleeving the inner tube on a rotary die, driving the inner tube to revolve along with the rotary die, and then uniformly coating the adhesive on the outer surface of the inner tube, after uniformly coating the adhesive, raising temperature to solidify in order to form the adhesive layer on the outer surface of the inner tube; moving the inner tube with the adhesive layer to a glass fiber reinforced plastics twisting production line, and continuously twisting the glass fibers onto adhesive layer, so as to form a glass reinforced plastic pipe encircling the adhesive layer; heating and solidifying the glass reinforced plastic pipe to form the composite cable duct with the adhesive layer; at last taking out the pipe to obtain the finished product. The production technology has the benefits as follows: the production technology is simple in steps and easy to operate; the glass fibers twisted glass reinforced plastic pipe and the inner tube can be tightly combined to be a whole by adding the adhesive layer, so that the slip-out phenomenon of the inner tube from the outer tube is avoided.

Description

Technical field: [0001] The invention relates to a production process of a composite cable guide with an adhesive layer. Background technique: [0002] There are basically two types of pipe materials used for plastic cable protection in the market, one is thermosetting plastics, mainly fiberglass pipes, and the other is thermoplastics, mainly PVC, polyethylene, and polypropylene pipes. The advantages and disadvantages of the pipes of these two types of materials are as follows: [0003] Advantages of FRP cable protection pipes: (1) FRP pipes are light in weight, high in rigidity, and strong in compression and subsidence resistance; (2) Large in thermal conductivity and good in flame retardancy, especially when cables are operated underground for a long time; (3) Good weather resistance, the service life can reach 50 years in the environment of -40 ℃ ~ 150 ℃. FRP cable protection pipes are still the preferred pipes in the typical design of the State Grid Corporation of Chin...

AI Technical Summary

Problems solved by technology

There has been a composite cable protection tube in the market that utilizes the advantages of thermoplastic materials and thermosetting materials to organically combine FRP and polypropylene. However, it simply uses FRP as the outer tube and polypropylene as the inner tube. The method of direct combination, because thermoplastic is a very typical non-polar crystalline material, has low surface tension, large shrinkage rate, poor creep resistance, poor dimensional stability of the product, and is prone to warping deformation. It is difficult to combine with other The materials are adsorbed together, resulting in a gap between the pipes of the two materials, and even in the process of pulling the cable, the inner pipe will be pulled out, which cannot meet the purpose required by the market

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