Tracking-resistant polyethylene sheath material for power wire and preparation method thereof

Abstract

The invention discloses a tracking-resistant polyethylene sheath material for a power wire and a preparation method thereof. The tracking-resistant polyethylene sheath material for the power wire is prepared from the following substances in parts by weight: 50-70 parts of high-density polyethylene, 30-40 parts of linear low-density polyethylene, 15-25 parts of ethylene-propylene-diene monomer, 3-6 parts of polytrifluoropropyl methylsiloxane, 10-15 parts of nano wollastonite, 20-25 parts of sediment white carbon black, 5-10 parts of nano-montmorillonite, 4-6 parts of ferrocene, 10-15 parts of magnesium hydroxide, 8-12 parts of methyl phenyl silicone oil, 2-3 parts of dibutyltin dilaurate, 3-5 parts of phosphoguanidine and 5-10 parts of borax. The sheath material is excellent in tracking resistance, so that the electric erosion phenomenon on the surface of the power wire in extra-high voltage can be solved; meanwhile, the sheath material is good in physical and mechanical properties, electrical insulation property, environmental stress crack resistance, ageing resistance and heat resistance, durable in use, long-term in operation in outdoor severe environment without failure, good in flame retardant effect, low in smoke during combusting without harmful gas release, free of environmental pollution, safe and environment-friendly.

Description

technical field

[0001] The invention relates to a power cord sheathing material and a preparation method thereof, in particular to a tracking-resistant polyethylene sheathing material for a power cord and a preparation method thereof. Background technique

[0002] The power cord sheath is an indispensable intermediate structural part of the power cord, which protects the power cord, ensures the safety of the power cord, and isolates the copper wire from water, air and other media to avoid leakage. Polyethylene sheathing material has excellent heat aging resistance, environmental stress cracking resistance, high tensile strength and elongation at break, which is suitable for power cord sheathing and has sufficient protection for copper cores. However, EHV power lines have relatively strict requirements on the electrical corrosion resistance of the sheath, and the existing polyethylene sheath materials on the market cannot meet the requirements for electrical tracking resistan...

Examples

Embodiment Construction

[0012] A tracking-resistant polyethylene sheath material for power cords, made of the following raw materials in weight (kg): high-density polyethylene 60, linear low-density polyethylene 40, EPDM rubber 20, polytrifluoropropyl Methyl siloxane 4, nano wollastonite 15, precipitated silica 20, nano montmorillonite 8, ferrocene 5, magnesium hydroxide 12, methyl phenyl silicone oil 10, dibutyltin dilaurate 2, phosphoric acid Guanidine 4, Borax 8, Vinyl Tris(β-methoxyethoxy)silane 1.5, N-(β-Aminoethyl)-γ-aminopropyltrimethoxysilane 0.5, Processing Aid PPA2, Ortho-Phenyl Dimethoxyethyl diformate 8, paraffin wax 4, antioxidant 10761, composite filler 5;

[0013] The preparation method of the composite filler is as follows: a. Take the following raw materials by weight (kg): pyrophyllite 10, diopside 8, opalite 6, N-2-(aminoethyl)-3-aminopropyltrimethoxy Silane 1.5, calcium lignosulfonate 2, sodium silicate 4, tourmaline slag 5, nano-diamond 4, germanium stone powder 3, sodium steara...

technical field

[0001] The invention relates to a power cord sheathing material and a preparation method thereof, in particular to a tracking-resistant polyethylene sheathing material for a power cord and a preparation method thereof. Background technique

[0002] The power cord sheath is an indispensable intermediate structural part of the power cord, which protects the power cord, ensures the safety of the power cord, and isolates the copper wire from water, air and other media to avoid leakage. Polyethylene sheathing material has excellent heat aging resistance, environmental stress cracking resistance, high tensile strength and elongation at break, which is suitable for power cord sheathing and has sufficient protection for copper cores. However, EHV power lines have relatively strict requirements on the electrical corrosion resistance of the sheath, and the existing polyethylene sheath materials on the market cannot meet the requirements for electrical tracking resistan...

Examples

Embodiment Construction

[0012] A tracking-resistant polyethylene sheath material for power cords, made of the following raw materials in weight (kg): high-density polyethylene 60, linear low-density polyethylene 40, EPDM rubber 20, polytrifluoropropyl Methyl siloxane 4, nano wollastonite 15, precipitated silica 20, nano montmorillonite 8, ferrocene 5, magnesium hydroxide 12, methyl phenyl silicone oil 10, dibutyltin dilaurate 2, phosphoric acid Guanidine 4, Borax 8, Vinyl Tris(β-methoxyethoxy)silane 1.5, N-(β-Aminoethyl)-γ-aminopropyltrimethoxysilane 0.5, Processing Aid PPA2, Ortho-Phenyl Dimethoxyethyl diformate 8, paraffin wax 4, antioxidant 10761, composite filler 5;

[0013] The preparation method of the composite filler is as follows: a. Take the following raw materials by weight (kg): pyrophyllite 10, diopside 8, opalite 6, N-2-(aminoethyl)-3-aminopropyltrimethoxy Silane 1.5, calcium lignosulfonate 2, sodium silicate 4, tourmaline slag 5, nano-diamond 4, germanium stone powder 3, sodium steara...

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