PVC (polyvinyl chloride) cable sheath tube

Abstract

The invention provides a high-temperature-resistant PVC (polyvinyl chloride) power cable protection tube which is characterized by being prepared from the following substances: 100-200 parts of polyvinyl chloride and chlorinated derivatives thereof; 4-6 parts of nano calcium; 3.5 to 5.0 parts of a stabilizing agent; 0.3 to 2.0 parts of a lubricant; 2 to 3 parts of PMMA; and 1.5-10 parts of a processing aid. The PVC power cable protection pipe has the characteristic of good high temperature resistance.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection, and in particular to a PVC high-temperature resistant cable sheath pipe. Background Art

[0002] With the rapid development of China's economy, the construction of many new towns, residential areas, industrial areas and roads requires the laying of new power supply cable systems and telecommunication cable systems. In addition, the government has been committed to further upgrading power cables and telecommunication cables, and the demand for pipes as cable protection is also increasing. In the field of cable sheath pipes, the proportion of plastic pipes is gradually increasing due to their advantages such as light weight and good flexibility. In the long run, the use of power plastic pipes will grow rapidly.

[0003] Existing ordinary cable protection tubes have low high temperature resistance, which may cause the PVC tubes to be prone to cracking and being flattened during long-term use. Summary of the invention

[0004] The purpose of the present invention is to provide a high temperature resistant PVC power cable protection tube in order to solve the above problems.

[0005] The present invention provides a high temperature resistant PVC power cable protection tube, characterized in that it is made of the following components:

[0006]

[0007]

[0008] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0009] The polyvinyl chloride is selected from one or more polyvinyl chlorides having a viscosity of 100-130 ml / g at 25°C.

[0010] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0011] The polyvinyl chloride is selected from one or more polyvinyl chlorides having an average degree of polymerization of 1000-1500.

[0012] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0013] The polyvinyl chloride and its chlorinated derivatives include polyvinyl chloride and chlorinated polyvinyl chloride in a mass ratio of 1:0.6-1.

[0014] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0015] The lubricant includes an external lubricant and an internal lubricant.

[0016] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0017] The mass ratio of the external lubricant to the internal lubricant is 1:0.1-0.4.

[0018] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized by:

[0019] It also contains masterbatch and titanium dioxide.

[0020] Furthermore, the present invention provides a high temperature resistant PVC power cable protection tube, which is also characterized in that it is made of the following components:

[0021]

[0022] DETAILED DESCRIPTION

[0023] Example 1.

[0024] A high temperature resistant PVC power cable protection tube is made of the following components through a traditional extrusion molding process:

[0025]

[0026] Example 2.

[0027] A high temperature resistant PVC power cable protection tube is made of the following components through a traditional extrusion molding process:

[0028]

[0029]

[0030] Example 3.

[0031] A high temperature resistant PVC power cable protection tube is made of the following components through a traditional extrusion molding process:

[0032]

[0033] Example 3.

[0034] A high temperature resistant PVC power cable protection tube is made of the following components through a traditional extrusion molding process:

[0035]

[0036]

[0037] The results of the high temperature resistance test GB / T 2423.1: the performance of Example 1 and Example 2 is improved by 15% compared with Example 3 and 8% compared with Example 4.

[0038] The polyvinyl chloride is selected from polyvinyl chloride having an average polymerization degree of 1000-1500 and a viscosity of 100-130 ml / g at 25°C.

[0039] The above calcium zinc stabilizer, external lubricant, internal lubricant, and processing aid are all conventional choices.

Claims

1. A high temperature resistant PVC power cable protection tube, It is characterized in that Made from the following ingredients:

2. A high temperature resistant PVC power cable protection tube as claimed in claim 1, Features: The polyvinyl chloride is selected from one or more polyvinyl chlorides having a viscosity of 100-130 ml / g at 25°C.

3. A high temperature resistant PVC power cable protection tube as claimed in claim 1, Features: The polyvinyl chloride is selected from one or more polyvinyl chlorides having an average degree of polymerization of 1000-1500.

4. A high temperature resistant PVC power cable protection tube as claimed in claim 1, Features: The polyvinyl chloride and its chlorinated derivatives include polyvinyl chloride and chlorinated polyvinyl chloride in a mass ratio of 1:0.6-1.

5. A high temperature resistant PVC power cable protection tube as claimed in claim 1, Features: The lubricant includes an external lubricant and an internal lubricant.

6. A high temperature resistant PVC power cable protection tube as claimed in claim 5, Features: The mass ratio of the external lubricant to the internal lubricant is 1:0.1-0.

4.

7. A high temperature resistant PVC power cable protection tube as claimed in claim 1, Features: It also contains masterbatch and titanium dioxide.

8. A high temperature resistant PVC power cable protection tube as claimed in claim 1, It is characterized in that Made from the following ingredients:

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