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High-carbon-black tracking-resistant silane crosslinked polyethylene insulating material and preparation method thereof

A polyethylene insulation, silane cross-linking technology, applied in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of signal transmission distortion, corrosion of cable structure, cable material or structure can not meet the needs of the industry, etc. , to achieve the effect of reducing the possibility, the extrusion surface is smooth and delicate, and the extrusion process range is wide.

Inactive Publication Date: 2020-02-07
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, wires and cables have been widely used in industrial production, transportation, construction engineering and mining, even in high-end fields including space and ocean, and cables will be used. With the development of society and economy, cable varieties are constantly updated and improved, and the production volume It is also continuously increasing. Because of the application of cables in different fields, people's requirements for them are also increasing. The existing cables cannot meet the needs of the industry due to material or structural problems.
Due to different geographical environments, the requirements for cables in the same field of use are also different. In some strong acid and alkali environments, ordinary cables cannot work normally, and the internal structure of the cable is easily corroded, which distorts signal transmission. And other shortcomings, export orders generally require carbon black content greater than 2%, and overhead lines in coastal areas require electric tracking resistance

Method used

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  • High-carbon-black tracking-resistant silane crosslinked polyethylene insulating material and preparation method thereof
  • High-carbon-black tracking-resistant silane crosslinked polyethylene insulating material and preparation method thereof
  • High-carbon-black tracking-resistant silane crosslinked polyethylene insulating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare material A and material B according to the following formula (parts by weight):

[0040]

[0041]

[0042] Preparation of material A, dry the resin LLDPE DFDA-7042 and LLDPE M2320 at 90°C*2h according to the above ratio, then mix it with the processing aid FR-1, and then heat it to 50°C in the kneading pot Mix at high speed, add silane LT-171, initiator DCP, and antioxidant 1035 at the same time, mix at high speed for 3 minutes, and then feed into the twin-screw extruder. The temperature of each zone of the screw extruder during extrusion is as follows:

[0043] Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ nose 150 120 160 160 160 160 180 190 200 230

[0044] The extruded slivers are cut into pellets through the pull strips in the water tank, and then dried in a hot air dryer at 60°C for 1 hour, then dried in a cold air dryer for 1 hour, and then packed in a vacuum-pumped aluminum-plastic composite bag.

[0045] Preparation of material B: first dr...

Embodiment 2

[0049] Prepare material A and material B according to the following formula (parts by weight):

[0050]

[0051]

[0052] Preparation of material A, dry the resin LLDPE DFDA-7042 and LLDPE M2320 at 90°C*2h according to the above ratio, then mix it with the processing aid FR-1, and then heat it to 50°C in the kneading pot Mix at high speed, add silane LT-171, initiator DCP, and antioxidant 1035 at the same time, mix at high speed for 3 minutes, and then feed into the twin-screw extruder. The temperature of each zone of the screw extruder during extrusion is as follows:

[0053] Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ nose 150 120 160 160 160 160 180 190 200 230

[0054] The extruded slivers are cut into pellets through the pull strips in the water tank, and then dried in a hot air dryer at 60°C for 1 hour, then dried in a cold air dryer for 1 hour, and then packed in a vacuum-pumped aluminum-plastic composite bag.

[0055] Preparation of material B: first dry ...

Embodiment 3

[0059] Prepare material A and material B according to the following formula (parts by weight):

[0060]

[0061] Preparation of material A, dry the resin LLDPE DFDA-7042 and LLDPE M2320 at 90°C*2h according to the above ratio, then mix it with the processing aid FR-1, and then heat it to 50°C in the kneading pot Mix at high speed, add silane LT-171, initiator DCP, and antioxidant 1035 at the same time, mix at high speed for 3 minutes, and then feed into the twin-screw extruder. The temperature of each zone of the screw extruder during extrusion is as follows:

[0062] Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ nose 150 120 160 160 160 160 180 190 200 230

[0063] The extruded slivers are cut into pellets through the pull strips in the water tank, and then dried in a hot air dryer at 60°C for 1 hour, then dried in a cold air dryer for 1 hour, and then packed in a vacuum-pumped aluminum-plastic composite bag.

[0064] Preparation of material B: first dry the LLDPE ...

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Abstract

The invention discloses a high-carbon-black tracking-resistant silane crosslinked polyethylene insulating material and a preparation method thereof. The raw materials comprise a material A and a material B according to a weight ratio of 90: (9.8-10.2), wherein the material A comprises the following components in parts by weight: 65-75 parts of LLDPE resin 1; 10 to 20 parts of LLDPE (linear low density polyethylene) resin 2; 3-4 parts of a processing aid; 1.9 to 2.1 parts of silane; 0.09 to 0.10 part of an initiator and 0.19 to 0.21 part of an antioxidant; the material B comprises the followingcomponents in parts by weight: 30 parts of LLDPE resin 1; 60 parts of carbon black master batch; 2.5 to 3 parts of an anti-ultraviolet absorbent; 2-2.5 parts of a light stabilizer; 1.9 to 2.1 parts of a catalyst; and 3-5 parts of an antioxidant. According to the invention, the carbon black master batch, the anti-ultraviolet absorbent and the light stabilizer are added into the catalyst master batch, and are mutually matched with the material A to generate the high-carbon-black-content tracking-resistant silane crosslinked polyethylene overhead insulating material, and the high-carbon-black-content tracking-resistant silane crosslinked polyethylene overhead insulating material can pass an experiment of a constant tracking voltage method 1A4.5 grade (4.5 kv / 6h) according to a GB / T6553-2014standard 5.2 method 1.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a high-carbon black tracking-resistant silane crosslinked polyethylene insulating material and a preparation method thereof. Background technique [0002] At present, wires and cables have been widely used in industrial production, transportation, construction engineering and mining, even in high-end fields including space and ocean, and cables will be used. With the development of social economy, cable varieties are constantly updated and improved, and the production volume It is also increasing continuously. Because of the application of cables in different fields, people's requirements for them are also increasing. The existing cables cannot meet the needs of the industry due to material or structural problems. Due to different geographical environments, the requirements for cables in the same field of use are also different. Ordinary cables cannot work ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/5425C08K5/375C08K3/04C08K5/134C08K13/02H01B3/44B29B9/06
CPCB29B9/065C08L23/0815C08L2201/08C08L2203/202C08L2205/025C08L2312/08H01B3/441C08K5/5425C08K5/375C08K3/04C08K5/1345C08K13/02
Inventor 沈长勇何腾飞
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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