Flame-retardant plastic-steel composite cable protection pipe and preparation method thereof

A composite cable and protection tube technology, which is applied in the installation of cables and ground cables, etc., can solve the problems of poor flame retardancy, failure to meet market requirements, and poor creep resistance of composite cable protection tubes, and is easy to achieve The effect of passing through, avoiding stuck cables, and strong load and pressure resistance

Inactive Publication Date: 2013-11-20
山东省呈祥电工电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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
In addition, wires and cables often burn due to self-heating or external fires during the transmission of electrical energy, and the combined composite cable protection tube has a poor flame retardant effect, which greatly limits its use.

Method used

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  • Flame-retardant plastic-steel composite cable protection pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, the flame-retardant plastic-steel composite cable protection tube is made of a flame-retardant inner tube 1 and a flame-retardant outer tube. Tube 2.

[0026] The flame-retardant inner pipe 1 is made of the following raw materials in parts by weight: 23 kg of polypropylene, 2 kg of polyethylene, 22 kg of defoamer, 55 kg of high-pressure polyethylene filler masterbatch, 6 kg of flame retardant red phosphorus, smoke suppressant Agent antimony trioxide 3.75 kg, molybdenum trioxide 1.25 kg, magnesium hydroxide 25 kg.

[0027] The flame retardant outer tube is made of the following raw materials in parts by weight: 86 kg of unsaturated polyester resin, 10 kg of flame retardant dimethyl methyl phosphate, 9.5 kg of talcum powder, and 0.5 kg of silane coupling agent.

[0028] The preparation method of the flame-retardant plastic-steel composite cable protection tube comprises the following steps:

[0029] (1) Preparation of flame retardant inner tube ...

Embodiment 2

[0034] The flame-retardant plastic-steel composite cable protection tube is made of a flame-retardant inner tube 1 and a flame-retardant outer tube.

[0035] The flame-retardant inner pipe 1 is made of the following raw materials in parts by weight: 22 kg of polypropylene, 3 kg of polyethylene, 10 kg of defoamer, 30 kg of high-pressure polyethylene filler masterbatch, 2 kg of flame retardant red phosphorus, smoke suppressant Agent antimony trioxide 1.5 kg, molybdenum trioxide 0.5 kg, magnesium hydroxide 20 kg.

[0036] The flame retardant outer tube is made of the following raw materials in parts by weight: 80 kg of unsaturated polyester resin, 6 kg of flame retardant dimethyl methyl phosphate, 16.5 kg of talcum powder, and 0.5 kg of silane coupling agent.

[0037] The outer surface of the flame-retardant inner tube 1 produced in step (1) is grooved, and the rest of the preparation method is the same as in Example 1. Grooving is performed on the outer surface of the flame-ret...

Embodiment 3

[0039] The flame-retardant plastic-steel composite cable protection pipe is made of a flame-retardant inner pipe 1 and a flame-retardant outer pipe.

[0040] The flame-retardant inner pipe 1 is made of the following raw materials in parts by weight: 24 kg of polypropylene, 1 kg of polyethylene, 35 kg of defoamer, 80 kg of high-pressure polyethylene filler masterbatch, 10 kg of flame retardant red phosphorus, smoke suppressant Agent antimony trioxide 6 kg, molybdenum trioxide 2 kg, magnesium hydroxide 30 kg.

[0041] The flame retardant outer tube is made of the following raw materials in parts by weight: 92 kg of unsaturated polyester resin, 15 kg of flame retardant dimethyl methyl phosphate, 2.5 kg of talcum powder, and 0.5 kg of silane coupling agent.

[0042] The outer surface of the flame-retardant inner tube 1 produced in step (1) is roughened, and the rest of the preparation method is the same as in Example 1. The roughening treatment on the outer surface of the flame-r...

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Abstract

The invention relates to a cable protection pipe and particularly discloses a flame-retardant plastic-steel composite cable protection pipe and a preparation method thereof. The cable protection pipe is formed by an inner flame-retardant pipe and an outer flame-retardant pipe which are combined into a whole, wherein the inner flame-retardant pipe is made of flame-retardant thermoplastic plastic; the outer flame-retardant pipe is a flame-retardant glass reinforced plastic pipe. The flame-retardant plastic-steel composite cable protection pipe and the preparation method thereof have the benefits as follows: the flame-retardant plastic-steel composite cable protection pipe has the characteristics of flame redundancy, resistance to heat and cold, low shrink, high strength, high compressive capacity, high resistance to foundation settlement and great heat conductivity coefficient; not only the advantages of the glass reinforced plastic pipe are brought into play but also the defects that the inner wall of the glass reinforced plastic pipe is not wear-resisting and is susceptible to fiber scattering are overcome; a cable can easily penetrate through the cable protection pipe, so that the phenomenon that a cable is stuck is avoided; the flame retardancy effect of the cable protection pipe is good, so that the possibility of a fire is lowered, and unnecessary losses are reduced.

Description

(1) Technical field [0001] The invention relates to a cable protection tube, in particular to a flame-retardant plastic-steel composite cable protection tube and a preparation method thereof. (2) Background technology [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 compressive and subsidence resistance; (2) Large in thermal conductivity, especially when the cable runs underground for a long time; (3) Weather resistance Well, 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/02C08L23/12C08L23/06C08L67/06C08K3/22C08K3/02C08K3/34C08K5/521
Inventor 李呈祥李先举刘桂龙陈建立赵金华刘孝峰姚春林
Owner 山东省呈祥电工电气有限公司
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