Environment-friendly cable insulation layer, and preparation method thereof

A cable insulation and environment-friendly technology, which is applied in the direction of insulated conductors, insulated cables, organic insulators, etc., can solve the problems of poor scratch resistance, friction whitening, and influence on the appearance of wires, etc., and achieve good scratch resistance and scratch resistance Stable and reliable effect of improved performance, insulation performance and anti-aging performance

Inactive Publication Date: 2018-02-23
南京创贝高速传动机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the production, transportation and use of wires and cables, it is inevitable that they will rub against each other or be rubbed by hard objects, resulting in friction and whitening, which will have a great impact on the appearance of the wire.
In order to meet the daily needs of wires and cables, most halogen-free flame-retardant wires and cables need to meet the conditions of low hardness and good flexibility, which leads to poor scratch resistance

Method used

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  • Environment-friendly cable insulation layer, and preparation method thereof

Examples

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preparation example Construction

[0042] 1. Preparation of inner insulating layer:

[0043] S1. Put the raw materials for preparing the inner insulating layer into a high-speed mixer according to the ratio, mix at a speed of 1400rpm for 5min, and then discharge at a speed of 600rpm;

[0044] S2. Put the raw materials mixed in step S1 into a twin-screw extruder to extrude and granulate. The speed of the extruder is 400r / min. The temperature is 150°C, and the head temperature is 125°C;

[0045] S3. The extruded material obtained in step S2 is irradiated and cross-linked by an electron accelerator to obtain an irradiated cross-linked polyethylene insulating material, and the irradiation dose is 16MRad;

[0046] Second, the preparation of the outer insulating layer:

[0047] (1) The EPDM rubber, scratch-resistant agent, sensitizer, silicon nitrogen flame retardant, compound anti-aging agent, reinforcing filler and compound compatibilizer used in the preparation of the inner insulating layer Mix in the mixer for...

Embodiment 1

[0057] An environment-friendly cable insulation layer, including an inner insulation layer and an outer insulation layer, the inner insulation layer and the outer insulation layer are double-layer co-extruded insulation layers, the inner insulation layer is made of irradiated cross-linked polyethylene insulation material, and the outer insulation layer It is made of low-smoke, halogen-free, flame-retardant radiation cross-linked polyolefin insulation material.

[0058] The outer insulation consists of the following components:

[0059] Ethylene-vinyl acetate copolymer 86kg

[0060] Linear Low Density Polyethylene 80kg

[0061] EPDM rubber 70kg

[0062] Pentaerythritol Stearate 36kg

[0063] Erucamide 14.4kg

[0064] Silicone masterbatch 21.6kg

[0065] Polyethylene wax 14.4kg

[0066] High molecular weight polysiloxane 21.6kg

[0067] Trimethylolpropane trimethacrylate 50kg

[0068] Silicon nitrogen flame retardant 96kg

[0069] Antioxidant PNX102 30kg

[0070] Antio...

Embodiment 2

[0083] An environment-friendly cable insulation layer, the difference between this embodiment and Embodiment 1 is:

[0084] The outer insulation consists of the following components:

[0085] Ethylene-vinyl acetate copolymer 97kg

[0086] Linear Low Density Polyethylene 90kg

[0087] EPDM rubber 76kg

[0088] Pentaerythritol Stearate 39.5kg

[0089] Erucamide 15.8kg

[0090] Silicone masterbatch 23.7kg

[0091] Polyethylene wax 15.8kg

[0092] High molecular weight polysiloxane 23.7kg

[0093] Trimethylolpropane trimethacrylate 52.5kg

[0094] Silicon nitrogen flame retardant 102kg

[0095] Antioxidant PNX102 33kg

[0096] Antioxidant 168 11kg

[0097] Antioxidant PS800 11kg

[0098] Silica 15.4kg

[0099] Superfine talcum powder 12.6kg

[0100] Maleic anhydride grafted ethylene-vinyl acetate copolymer 24.75kg

[0101] Maleic anhydride grafted polyethylene 19.25kg

[0102] Maleic anhydride grafted polyolefin 11kg.

[0103] The inner insulating layer consists of...

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Abstract

The invention discloses an environment-friendly cable insulation layer, and belongs to the field of wire cable. The environment-friendly cable insulation layer comprises an internal insulation layer and an external insulation layer; a double layer co-extrusion insulation layer is composed of the internal insulation layer and the external insulation layer; the internal insulation layer is preparedfrom an irradiation crosslinked polyethylene insulation material; the external insulation layer is prepared from a low-smoke halogen-free flame-resistant irradiation crosslinked polyolefin insulationlayer; the external insulation layer comprises, by weight, 43 to 65 parts of an ethylene-vinyl acetate copolymer, 40 to 60 parts of linear low density polyethylene, 35 to 47 parts of ethylene propylene diene monomer, 54 to 75 parts of a scratch-resistant agent, 25 to 30 parts of a sensitizing agent, 48 to 60 parts of a silicon nitrogen flame retardant, 25 to 35 parts of a composite anti-aging agent, 12 to 20 parts of a reinforcing filler, and 25 to 35 parts of a composite compatilizer. The environment-friendly cable insulation layer, is friendly to the environment, and is capable of improvingthe scratch resistance of cables greatly.

Description

technical field [0001] The invention relates to electric wires and cables, in particular to an environment-friendly cable insulating layer. Background technique [0002] Polymer has the advantages of light specific gravity, easy molding, good comprehensive mechanical properties and excellent electrical insulation properties, so it has become the preferred base material for various wire and cable coverings. Over the years, soft PVC material has been the most typical and commonly used resin system for wire and cable covering materials due to its necessary mechanical strength, excellent flexibility, relatively low price and mature processing technology. However, due to the halogen contained in PVC resin, when these products are scrapped, a large amount of harmful and toxic emissions such as hydrogen chloride and even dioxin will be produced; secondly, the processing fluidity and heat resistance stability of PVC resin are poor, so it is necessary A wide variety of various addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/16C08L83/04C08L23/06C08K13/02C08K5/20C08K5/103C08K5/526C08K3/36C08K7/08H01B3/44H01B7/18H01B7/02
Inventor 陆树根刘凯柴洪义朱文庆
Owner 南京创贝高速传动机械有限公司
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