HDPE (high-density polyethylene) cable sheath material

A cable sheathing material and melt viscosity technology, applied in plastic/resin/wax insulators, organic insulators, etc., can solve the problems of low volume resistivity, low tensile yield strength and tensile strength, easy embrittlement, etc. achieve good toughness

Active Publication Date: 2013-09-18
SUZHOU ZHIRUI PHOTOELECTRIC MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present application provides a HDPE cable sheath material and its preparation method to solve the problem of easy aging, low toughness, low tensile yield strength and tensile strength, easy embrittlement and low volume resistivity of existing cable sheath materials. and other technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0061] HDPE 100;

[0062] Paraffin 0.5;

[0063] Zinc stearate 0.1;

[0064] White oil 0.1;

[0065] CPE 40;

[0066] Carbon black masterbatch 2.7;

[0067] Antioxidant DLTP 0.1;

[0068] Antioxidant CA 0.25;

[0069] DFNA-0012NT 0.1.

[0070] The second step: fully mix the above raw materials for 5-10 minutes;

[0071] The third step: Plasticize the materials mixed in the second step in a mill, and the extrusion temperature is 120°C, 130°C, 140°C, 150°C, 150°C, 155°C.

[0072] The melt flow rate of the product is 10g / 10min, the breakdown strength is 19.2KV / mm, and the volume resistivity is 2×10 16 Ω·cm, tensile strength 10MPa, elongation at break 400%.

Embodiment 2

[0074] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0075] HDPE 100;

[0076] Paraffin 0.5;

[0077] Zinc stearate 0.1;

[0078] White oil 0.1;

[0079] CPE 40;

[0080] Carbon black masterbatch 0.25;

[0081] Antioxidant DLTP 0.9;

[0082] DFNA-0078NT 0.1;

[0083] Polyethylene wax 0.6.

[0084] The second step: fully mix the above raw materials for 5-10 minutes;

[0085] The third step: Plasticize the materials mixed in the second step in a mill, and the extrusion temperature is 120°C, 130°C, 140°C, 150°C, 150°C, 155°C.

[0086] The melt flow rate of the product is 10.2g / 10min, the breakdown strength is 19.4KV / mm, and the volume resistivity is 2.2×10 16 Ω·cm, tensile strength 12MPa, elongation at break 420%.

Embodiment 3

[0088] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0089] HDPE 100;

[0090] Paraffin 0.5;

[0091] Zinc stearate 0.1;

[0092] White oil 0.05;

[0093] CPE 2;

[0094] Carbon black masterbatch 0.05;

[0095] Antioxidant DLTP 0.1;

[0096] HD101 0.1;

[0097] Polyethylene wax 0.2;

[0098] FY-5081D 0.01.

[0099] The second step: fully mix the above raw materials for 5-10 minutes;

[0100] The third step: Plasticize the materials mixed in the second step in a mill, and the extrusion temperature is 120°C, 130°C, 140°C, 150°C, 150°C, 155°C.

[0101] The melt flow rate of the product is 10.4g / 10min, the breakdown strength is 19.4KV / mm, and the volume resistivity is 2.4×10 16 Ω·cm, tensile strength 12MPa, elongation at break 420%.

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Abstract

The invention relates to an HDPE (high-density polyethylene) cable sheath material. The HDPE cable sheath material comprises the following components in parts by weight: 100 parts of HDPE, 0.1-5 parts of melt viscosity modifier, 0.01-2 parts of heat stabilizer, 0.01-10 parts of white oil, 1-80 parts of toughener, 0.01-10 parts of carbon black masterbatch, 0.01-10 parts of antioxidant and 0.01-10 parts of nucleating agent; the melt flow rate of a product is more than 10g/10min, which is greatly improved in comparison with the melt flow rate of 0.1-0.3g/10min of the existing cable sheath material; the elongation rate is 500%, which is greatly improved in comparison with the elongation rate of 23% of the existing HDPE; the tensile strength is 10-20MPa, and the density is 0.959-0.965g/cm<3>; the brittle temperature of the product is -70 DEG C, the volume resistivity is more than 2*1016 omega.cm, the breakdown strength is 20KV/mm, and the resistance to environmental stress cracking is not less than 50h; and the product has the advantages of good toughness, aging resistance and resistance to chemical corrosion, and can be widely produced and used for continuously replacing existing materials.

Description

technical field [0001] The application belongs to the field of cable sheathing materials, in particular to a HDPE cable sheathing material. Background technique [0002] The black high-density polyethylene material used as the sheath material is made of high-density polyethylene base resin for sheath materials, adding high-quality carbon black masterbatch and other related processing aids, and kneading and granulating. Factors such as high-quality carbon black masterbatch content, carbon black particle size, and dispersion have a great impact on the long-term performance of optical cables such as ultraviolet radiation aging resistance and heat aging resistance. With the development of social urbanization, science and technology, and humanization, and the rapid development of the plastic industry, cable materials are getting closer to people's lives, followed by an increase in the use of cable sheathing materials, and most of the cable sheathing Problems such as easy aging, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08K13/02C08K5/01C08K5/05C08K5/098C08K3/04H01B3/44
Inventor 张宇左士祥
Owner SUZHOU ZHIRUI PHOTOELECTRIC MATERIAL TECH CO LTD
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