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Soft polyethylene cable sheath material and preparation method thereof

A cable sheathing material, polyethylene technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of increasing the cable construction burden, the cable sheath is not soft enough, and restricting expansion and application, and achieves improvement in brittleness and inflexibility. , Improve flexibility and bendability, and facilitate construction.

Active Publication Date: 2016-07-20
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the relatively high hardness of polyethylene itself makes the cable sheath prepared by it not soft enough. It is difficult to bend and operate when the cable is processed during cable construction, and it is easy to cause damage to the cable sheath and cause unnecessary damage. At the same time, it also increases the burden of cable construction, thus limiting its further expansion and application in the field of wire and cable

Method used

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  • Soft polyethylene cable sheath material and preparation method thereof
  • Soft polyethylene cable sheath material and preparation method thereof
  • Soft polyethylene cable sheath material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0048]

[0049]

[0050] Components Select the raw materials for each component according to the stated ratio. After fully mixing the accurately weighed resin and additives in the high-speed mixer, the feed extrusion granulation mixing type twin-screw extrusion granulator Medium-extrusion granulation, the extrusion temperature of the twin-screw extruder is 145-205°C, the temperature of the twin-screw extruder is set as: 145-155°C in the feeding section, 160-185°C in the mixing section, The extrusion granulation section is at 185-195°C, and the head part is at 195-205°C. Drying after granulation, the drying temperature is 60-95° C., and the drying time is 1-3 hours, and the pellets for cables are obtained. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 2

[0052] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0053]

[0054] Components Select the raw materials for each component according to the stated ratio, fully mix the accurately weighed resin and additives in a high-speed mixer at a speed of 500-1000rpm, the mixing temperature of the high-speed mixer is 50°C, and the mixing time 15min. Extrude and granulate in a feed extrusion granulation mixing type twin-screw extrusion granulator, the extrusion temperature of the twin-screw extruder is 155-200 ° C, the temperature setting of the twin-screw extruder It is: 155°C in the feeding section, 180°C in the mixing section, 190°C in the extrusion granulation section, and 200°C in the head part. Drying after granulation, the drying temperature is 80° C., and the drying time is 2 hours, to obtain granules for cables. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 3

[0056] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0057]

[0058]Processes such as mixing and extrusion granulation are the same as in Example 1. The composition and weight ratio of the raw material components are shown in Table 1.

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Abstract

The invention provides a soft polyethylene cable sheath material. The material comprises the components of, by weight, 100 parts of polyethylene resin, 10-50 parts of a flexibility modifier, 0.6-2 parts of a lubricant, 0.6-1 part of an antioxidant, and 2-10 parts of a UV-resistant masterbatch. The invention further provides a preparation method of the soft polyethylene cable sheath material. The soft polyethylene cable sheath material provided by the invention has good flexibility. Original characteristics of brittleness and bending difficulty of a polyethylene cable material can be effectively ameliorated, such that the application range of polyethylene cable material can be effectively expanded. Therefore, market value of the polyethylene cable material can be improved.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and in particular relates to a soft polyethylene cable sheath material and a preparation method thereof. Background technique [0002] As a supporting industry of the power industry, one of the pillar industries of the national economy, the wire and cable industry plays an extremely important role and position in the national economy. Polyethylene cable material is widely used in the field of wire and cable because of its light weight, good mechanical properties, very good low temperature resistance, good environmental stress cracking resistance, good processability, and excellent electrical insulation properties. has a very wide range of applications. Polyethylene cable material is one of the indispensable important components in cable material. [0003] With people's in-depth research on polyethylene cable materials and the increasing requirements for the performance indicators of cab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K3/04C08J3/22H01B3/44H01B7/17B29B9/06B29C47/92B29C48/92
Inventor 吴芳芳段春来汪晓明
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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