Environment-friendly type power cable plastic protecting tube

Abstract

The invention discloses an environmental friendly type power cable plastic preserving pipe. It comprises: chlorinated polyvinyl chloride, polyvinyl chloride, methacrylic acid, butadiene, styrene ternary polymerization resin, heavy calcium carbonate and so on. It adds nontoxic compound calcium zinc stabilizer, stearic acid, chlorinated polyvinyl chloride, epoxy soya oil, ceresin and white oil and so on and the macromole compound.

Description

Technical field

[0001] The invention relates to power cable technology, in particular to a plastic protective tube for power cables. Background technique

[0002] Power development and power grid transformation require the use of a large number of cables, but it can be found that the most used cable protection tubes so far are plastic protection tubes made of heavy metal stabilizers, such as the power cable plastic protection tube with patent No. ZL95111671.1. This kind of protective pipe is buried in the soil and soaked by groundwater for a long time, and the heavy metals in it will be precipitated, which will make the heavy metal content of the nearby soil far exceed the standard value, thus causing pollution to the environment. Contents of the invention

[0003] The object of the present invention is to provide an environment-friendly plastic protection tube for electric power cables, which has no precipitation of heavy metals, especially no heavy metals that endanger t...

Examples

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] figure 1 In this embodiment, the wall thickness is 8.0 0 +0.3 mm, density 1490~1650kg / m 3 , volume resistance ≥ 1.0×10 13 Ω·cm, inner wall friction coefficient ≤0.35. The processing technology of this embodiment is to mix the powdery raw material formula and heat it to ≤110°C for about 3 minutes, and then enter the cold kneading pot with more than twice the volume for mixing, and the cold mixing time is about 2 to 3 minutes. After sieving, it is sent to a twin-screw extruder for extrusion molding. If the casing needs to be flared, it should be flared and formed on the flare machine immediately.

Technical field

[0001] The invention relates to power cable technology, in particular to a plastic protective tube for power cables. Background technique

[0002] Power development and power grid transformation require the use of a large number of cables, but it can be found that the most used cable protection tubes so far are plastic protection tubes made of heavy metal stabilizers, such as the power cable plastic protection tube with patent No. ZL95111671.1. This kind of protective pipe is buried in the soil and soaked by groundwater for a long time, and the heavy metals in it will be precipitated, which will make the heavy metal content of the nearby soil far exceed the standard value, thus causing pollution to the environment. Contents of the invention

[0003] The object of the present invention is to provide an environment-friendly plastic protection tube for electric power cables, which has no precipitation of heavy metals, especially no heavy metals that endanger t...

Examples

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] figure 1 In this embodiment, the wall thickness is 8.0 0 +0.3 mm, density 1490~1650kg / m 3 , volume resistance ≥ 1.0×10 13 Ω·cm, inner wall friction coefficient ≤0.35. The processing technology of this embodiment is to mix the powdery raw material formula and heat it to ≤110°C for about 3 minutes, and then enter the cold kneading pot with more than twice the volume for mixing, and the cold mixing time is about 2 to 3 minutes. After sieving, it is sent to a twin-screw extruder for extrusion molding. If the casing needs to be flared, it should be flared and formed on the flare machine immediately.

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