Production process of high-temperature-resistant flame-retarding cable material

A flame-retardant cable material and production process technology, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of frost cracking and damage of cable protective sleeves, insufficient supply of manufacturers, and high production costs of cables, so as to achieve production costs. control, good insulation and protection, and the effect of improving efficiency

Inactive Publication Date: 2017-10-20
HEFEI DONGHENGRUI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the different use environment of the cable, the performance of the cable has different requirements. For cables in some special working environments, it is often necessary to select a specific type of cable material. performance, otherwise it may cause the cable protective sheath to freeze and crack, and eventually cause an electrical accident
In some humid environments, the corrosion and oxidation resistance of the cable material is very high, otherwise the cable material will be oxidized and corroded, and the internal wires will be exposed, which will affect the performance of the cable.
[0004] The supply of general-purpose cables in the market is sufficient and the cost is relatively low, but the special cables used in special environments are limited in market and insufficient in production and supply, and the price is relatively high. Cables with high temperature resistance and flame retardant properties are mainly used in some temperature Higher areas, as well as some special industrial places, can use relatively high working temperature, and the flame retardant effect is very good, but the production cost of this kind of cable is high, the market price is expensive, and the supply of the manufacturer is also insufficient.

Method used

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  • Production process of high-temperature-resistant flame-retarding cable material
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of matrix resin: 30 parts of polypropylene resin, 20 parts of polyurethane resin, 10 parts of polystyrene resin, 3 parts of calcium-zinc composite heat stabilizer and 8 parts of methyl acrylate monomer were polymerized according to the number of parts by mass. The maleic anhydride graft used was put into a mixer and stirred evenly, and then sent to an extruder at 140° C. for blending and extrusion to obtain a matrix resin extrudate for use.

[0024] (2) Rubber modification: Weigh 25 parts of the mixture of ethylene propylene rubber and nitrile rubber, 4 parts of calcium stearate, 5 parts of tetraerythritol ester, and 15 parts of ammonium polyphosphate, put them into a high-speed kneader, and then put them into the matrix Resin extruded material, heated for low-speed mixing, the speed of low-speed mixing is 700r / min, the temperature of the kneader is controlled at 120°C, and 15 parts of plasticizer dioctyl phthalate are added in two times at the same time....

Embodiment 2

[0027] (1) Preparation of matrix resin: 40 parts of polypropylene resin, 30 parts of polyurethane resin, 15 parts of polystyrene resin, and 5 parts of organotin heat stabilizer and 10 parts of butene monomer are used in the polymerization reaction according to the mass parts The maleic anhydride grafts were put into a mixer and stirred evenly, and then fed into an extruder at 160° C. for blending and extrusion to obtain matrix resin extrudates for later use.

[0028] (2) Rubber modification: Weigh 20 parts of neoprene rubber, 2 parts of zinc stearate, 5 parts of dilauryl thiodipropionate, and 12 parts of magnesium hydroxide, put them into a high-speed kneader, and then put them into the matrix resin to extrude Discharge, heat and mix at low speed. The speed of low-speed mixing is 900r / min. The temperature of the kneader is controlled at 130°C. At the same time, add 20 parts of plasticizer dioctyl phthalate in two times, and wait until the plasticizer is completely added. Final...

Embodiment 3

[0031] (1) Matrix resin preparation: 35 parts of polypropylene resin, 25 parts of polyurethane resin, 12 parts of polystyrene resin, and 4 parts of calcium-zinc composite heat stabilizer and 9 parts of propylene monomer polymerization reaction are used according to the mass parts The maleic anhydride graft is put into a mixer and stirred evenly, and then sent to an extruder at 150° C. for blending and extrusion to obtain a matrix resin extrusion material for later use.

[0032] (2) Rubber modification: take by weighing 23 parts of NBR, 3 parts of magnesium stearate, 4 parts of tetraerythritol esters, 13 parts of aluminum hydroxide, put them into a high-speed kneader, then drop into matrix resin extrusion material, Heat and mix at low speed. The speed of low-speed mixing is 800r / min. The temperature of the kneader is controlled at 125°C. At the same time, 17 parts of plasticizer dioctyl phthalate are added in two times. After the plasticizer is completely added, reduce Kneader ...

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Abstract

The invention belongs to the technical field of production of cable materials and particularly relates to a production process of a high-temperature-resistant flame-retarding cable material. The production process includes the steps of: 1) preparing resin base; 2) modifying rubber; and 3) performing extrusive granulation. In the production process, polypropylene resin, polyurethane resin and polystyrene resin are subjected to blend extrusion to form the resin base, which is then mixed with rubber with additives of a flame retarder, an antioxidant, an lubricant and the like in a kneading machine at high speed and high temperature; finally a mixture material is subjected to extrusive granulation to prepare the cable material. The cable material has good high-temperature-resistant and flame-retarding effects, and can be applied in high-temperature and hot environment without problems of aging and breaking and without a problem of combustion of an insulating layer. The production process can reduce production cost and improve economic benefits of enterprise.

Description

technical field [0001] The invention belongs to the technical field of cable material production, and in particular relates to a production process of high-temperature-resistant and flame-retardant cable material. Background technique [0002] A cable is a wire made of one or more mutually insulated conductors and an outer insulating layer that transmits power or information from one place to another. The types of cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. The outer sheath is a structural part that protects the insulating layer of the wire and cable from environmental factors; the main function of the outer sheath is to improve the mechanical strength of the wire and cable, resist chemical corrosion, moisture, water immersion, and prevent cable burning. The production material of the...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L75/04C08L25/06C08L23/16C08L9/02C08L11/00C08K13/02C08K5/098C08K3/32C08K5/12C08K3/26H01B3/44
CPCC08L23/12C08K2003/265C08K2003/323C08L2201/02C08L2201/08C08L2203/202C08L2205/035H01B3/441C08L75/04C08L25/06C08L23/16C08L9/02C08L11/00C08K13/02C08K5/098C08K3/32C08K5/12C08K3/26
Inventor 齐慧
Owner HEFEI DONGHENGRUI ELECTRONICS TECH CO LTD
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