Cable insulating material and preparation method thereof

A technology for cable insulation and raw materials, applied in the production of organic insulators, cellulose substances, bulk chemicals, etc., can solve the problems of high price of magnesium oxide mineral insulated cables, poor flexibility of mica tape fire-resistant cables, high processing, and high labor costs. Good application prospects, excellent mechanical properties and insulation properties, good processing performance

Inactive Publication Date: 2018-08-17
合肥羿振电力设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing cables mainly include: mica tape fire-resistant cables, magnesium oxide mineral insulated cables, flexible fire-proof cables and fire-proof mud inorganic mineral fire-resistant fire-resistant cables, etc. These cables have various disadvantages, such as: mica tape fire-resistant cables have poor flexibility and thickness is limited. Limitation, slow wrapping speed and low production efficiency, resulting in high processing and labor costs; strong moisture absorption, storage for 3-6 months, and rapid decline in insulation performance after being damp; in addition, the price is high, especially for synthetic mica
Magnesium oxide mineral insulated cables are expensive, the production process is complicated and the laying is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A cable insulating material, comprising the following raw materials in parts by weight: 48 parts of ethylene-vinyl acetate copolymer, 36 parts of epoxy resin, 22 parts of neoprene rubber, 32 parts of hydrogenated nitrile rubber, 18 parts of high-density polyethylene, modified 35 parts of bentonite, 43 parts of modified nanocrystalline cellulose, 27 parts of modified quicklime, 32 parts of titanium dioxide, 26 parts of zinc oxide, 25 parts of magnesium stearate, 24 parts of dibutyl phthalate, 19 parts of flux, 18 parts of flame retardant, 13 parts of lubricant and 20 parts of antioxidant.

[0023] A preparation method of cable insulation material, comprising the following preparation steps:

[0024] a. Mix neoprene, hydrogenated nitrile rubber and high-density polyethylene into the internal mixer, banbury at 350°C for 3 hours, then cool down to 180°C, add ethylene-vinyl acetate copolymer and epoxy resin, React for 1 h under stirring to obtain material 1;

[0025] b. In...

Embodiment 2

[0033] A cable insulating material, comprising the following raw materials in parts by weight: 35 parts of ethylene-vinyl acetate copolymer, 28 parts of epoxy resin, 24 parts of neoprene rubber, 24 parts of hydrogenated nitrile rubber, 23 parts of high-density polyethylene, modified 38 parts of bentonite, 43 parts of modified nanocrystalline cellulose, 29 parts of modified quicklime, 27 parts of titanium dioxide, 23 parts of zinc oxide, 17 parts of magnesium stearate, 24 parts of dibutyl phthalate, 15 parts of flux, 18 parts of flame retardant, 17 parts of lubricant and 16 parts of antioxidant.

[0034] A preparation method of cable insulation material, comprising the following preparation steps:

[0035] a. Mix chloroprene rubber, hydrogenated nitrile rubber and high-density polyethylene into an internal mixer, banbury at 330°C for 2 hours, then cool down to 180°C, add ethylene-vinyl acetate copolymer and epoxy resin, React for 1 h under stirring to obtain material 1;

[00...

Embodiment 3

[0044] A cable insulating material, comprising the following raw materials in parts by weight: 39 parts of ethylene-vinyl acetate copolymer, 33 parts of epoxy resin, 24 parts of neoprene rubber, 27 parts of hydrogenated nitrile rubber, 23 parts of high-density polyethylene, modified 46 parts of bentonite, 51 parts of modified nanocrystalline cellulose, 29 parts of modified quicklime, 32 parts of titanium dioxide, 23 parts of zinc oxide, 17 parts of magnesium stearate, 28 parts of dibutyl phthalate, 15 parts of flux, 20 parts of flame retardant, 17 parts of lubricant and 19 parts of antioxidant.

[0045] A preparation method of cable insulating material, comprising the following preparation steps:

[0046] a. Mix neoprene, hydrogenated nitrile rubber and high-density polyethylene into the internal mixer, banbury at 350°C for 3 hours, then cool down to 200°C, add ethylene-vinyl acetate copolymer and epoxy resin, Reacted for 2h under stirring to obtain material 1;

[0047] b. I...

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PUM

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Abstract

The invention provides a cable insulating material and a preparation method thereof. The cable insulating material is prepared from the following components: ethylene-vinyl acetate copolymer, epoxy resin, chloroprene rubber, hydrogenated nitrile rubber, high density polyethylene, modified bentonite, modified nano-crystalline cellulose, modified quick lime, titanium dioxide, zinc oxide, magnesium stearate, dibutyl phthalate, fusing agent, flame retardant, lubricant and antioxidant. The cable material prepared by the invention has excellent mechanical property and insulating property, good tensile resistance and impact resistance, has low water absorption rate and is less likely to be affected with damp, thereby having a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a cable insulating material and a preparation method thereof. Background technique [0002] With the development of society and economy, wires and cables have become an invisible and important part of people's daily life. In unexpected situations, it is very important to ensure the normal operation of the circuit. Therefore, in some large high-rise buildings and crowded places, wires and cables with good insulation performance have become people's subjective choice. Existing cables mainly include: mica tape fire-resistant cables, magnesium oxide mineral insulated cables, flexible fire-proof cables and fire-proof mud inorganic mineral fire-resistant fire-resistant cables, etc. These cables have various disadvantages, such as: mica tape fire-resistant cables have poor flexibility and thickness is limited. Limitation, slow wrapping speed and low produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/04C08L23/08C08L63/00C08L11/00C08L15/00C08L23/06C08K13/06C08K9/06C08K3/34C08K3/22C08K5/098C08K5/12C08K9/04H01B3/18
CPCC08K2003/2206C08K2003/2241C08K2003/2296C08L1/04C08L2201/02C08L2203/202C08L2205/035H01B3/185C08L23/0853C08L63/00C08L11/00C08L15/005C08L23/06C08K13/06C08K9/06C08K3/346C08K3/22C08K5/098C08K5/12C08K9/04Y02P20/54
Inventor 武行峰
Owner 合肥羿振电力设备有限公司
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