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A kind of high-speed extrusion communication cable insulation material and its preparation method

A communication cable, high-speed extrusion technology, used in the field of cable insulation materials, can solve the problems of uneven plasticization, unstable audio frequency, crosstalk, etc., and achieve the effect of stable quality

Inactive Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of blended products is that due to uneven mixing, uneven plasticization during extrusion, and uneven surface of the product, it is easy to cause current breakdown and unstable quality. Sound, audio instability, etc.

Method used

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  • A kind of high-speed extrusion communication cable insulation material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Embodiment and comparative example formula:

[0028] Table 1, embodiment and comparative example formula (weight part)

[0029]

Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 HDPE 92 92 92 92 92 antioxidant 0.3 0.3 0.3 0.3 0.3 Anti copper agent 0.5 0.2 0.4 0 0.5 Processing aids 0.4 0.3 0.3 0.5 0 Other additives 2 2 2 2 2

[0030] The HDPE used in the examples is powder produced by Yanshan Petrochemical, with an MFR of 1.0 g / 10 min and a density of 0.950 g / 10 min.

[0031] Antioxidant is a compound of antioxidant 1010 and 168;

[0032] Anti-copper agent is MD1024;

[0033] The processing aid is PPA;

[0034] Other additives are white oil and calcium stearate.

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Abstract

The invention discloses an insulating material for high-speed extrusion of communication cables and a preparation method thereof. The high-speed extruded communication cable insulation material includes the following components in parts by weight: 90-95 parts of high-density polyethylene (HDPE), 0.1-3 parts of antioxidant, 0.2-1 part of anti-copper agent, processing aid 0.1~3 parts, other additives 0.2~2 parts. First mix HDPE resin, anti-copper agent, antioxidant and processing aids in a high-speed mixer, and then use a twin-screw extruder to granulate. In the present invention, the anti-copper agent is added, which can effectively prevent the communication cable from aging; the processing aid is added, which can improve the processing performance of the high-speed extruded communication cable, improve the processing speed and ensure good surface performance.

Description

technical field [0001] The invention relates to the technical field of polymer insulation and metal conductor composite materials, in particular to a cable insulation material with an extrusion speed of more than 2000m / min (meter / minute) and used for the insulation layer of communication cables. Background technique [0002] At present, high-density polyethylene is widely used in the insulation layer of high-speed extruded communication cables due to its good plasticizing ability and good environmental stress cracking resistance. Communication cables have higher requirements for insulating materials. It is required that the insulating material be directly coated on the surface of the metal conductor at a higher extrusion speed. At the same time, the surface of the insulating layer must be smooth and the electrical properties of the cable are excellent. Since the insulation layer of the communication cable is in direct contact with the conductor copper for a long time, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K5/00C08K5/134C08K5/524C08K5/25C08K5/3417H01B11/00
CPCC08L23/06C08L2203/202C08L2207/062H01B11/00C08L77/06C08K5/00
Inventor 鄢薇薛志刚李德军赵和英于涛王灵肖
Owner CHINA PETROLEUM & CHEM CORP