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Crosslinkable, radiation-resistant, highly-flame-retardant, low-smoke and zero-halogen cable material and preparation method of cable material

A high flame retardant and radiation-resistant technology, applied in the direction of insulated cables, cables, circuits, etc., can solve problems such as affecting the mechanical properties, aging properties and radiation resistance properties of products, increasing the cost of cable materials, affecting product performance, etc., to achieve low cost. , easy operation, long thermal life effect

Active Publication Date: 2013-06-26
JIANGSU DEWEI ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The halogen-free flame retardants in the cable materials of the prior art are mainly magnesium hydroxide and aluminum hydroxide. Although a large amount of filling can make the product have better flame retardancy, it will affect the mechanical properties, aging performance and Radiation resistance
On the other hand, in cable materials with radiation resistance, the method of adding anti-radiation agents is often used in the preparation of materials. Anti-radiation agents are generally inorganic substances, which will affect the performance of the product, and are expensive, increasing the cost of cable materials. the cost of

Method used

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  • Crosslinkable, radiation-resistant, highly-flame-retardant, low-smoke and zero-halogen cable material and preparation method of cable material
  • Crosslinkable, radiation-resistant, highly-flame-retardant, low-smoke and zero-halogen cable material and preparation method of cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example provides a preparation method of a cross-linkable radiation-resistant high flame-retardant low-smoke halogen-free cable material. The raw materials and dosages used are shown in Table 1, wherein:

[0050] High-density polyethylene: composed of high-density polyethylene with a melt index of 2g / 10min and high-density polyethylene with a melt index of 8g / 10min in a weight ratio of 1:0.4;

[0051] Polyolefin elastomer: composed of ethylene-octene copolymer with Shore A hardness of 85 and ethylene-butyl acrylate copolymer with Shore A hardness of 80 in a weight ratio of 1:2;

[0052] Modified EPDM rubber: use methylphenylpolysiloxane organosilicon structure to modify EPDM rubber;

[0053] The first antioxidant: composed of antioxidant RD, antioxidant 300, antioxidant 1010 and antioxidant 1076, and its weight ratio is 0.8:1.2:0.3:2;

[0054] Light stabilizer: 2,2,6,6-tetramethylpyridinol;

[0055] The first lubricant: composed of magnesium stearate, polyethylene ...

Embodiment 2

[0062] This example provides a method for preparing cross-linkable radiation-resistant, high-flame-retardant, low-smoke and halogen-free cable materials. The raw materials and dosages used are shown in Table 1. The raw materials other than high-density polyethylene and the first antioxidant are all the same as Example 1 is the same.

[0063] In this example, the selected high-density polyethylene is high-density polyethylene with a melt index of 0.5 g / 10min.

[0064] In this example, the first antioxidant is antioxidant RD, antioxidant 300, antioxidant 1024 and antioxidant 1076, and the weight ratio is 0.8:1.2:0.3:2.

[0065] The preparation process of the cross-linkable radiation-resistant high flame-retardant low-smoke halogen-free cable material is the same as that in Example 1.

Embodiment 3

[0067] This example provides a preparation method for cross-linkable radiation-resistant, high-flame-retardant, low-smoke and halogen-free cable materials. The raw materials and dosages used are shown in Table 1. The raw materials other than polyolefin elastomer and the first lubricant are the same as those in the implementation Example 1 is the same.

[0068] In this example, the selected polyolefin elastomer is an ethylene-butyl acrylate copolymer with a Shore A hardness of 80.

[0069] In this example, the selected first lubricant is composed of calcium stearate, polyethylene wax and silicone oil in a weight ratio of 1:3:1.5.

[0070] The preparation process of the cross-linkable radiation-resistant high flame-retardant low-smoke halogen-free cable material is the same as that in Example 1.

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Abstract

The invention relates to a crosslinkable, radiation-resistant, highly-flame-retardant, low-smoke, zero-halogen cable material and a preparation method of the cable material. The cable material comprises the following raw materials by weight parts of 5 to 30 parts of high density polyethylene, 20 to 60 parts of a polyolefin elastomer, 5 to 20 parts of modified ethylene-propylene diene copolymer, 160 to 200 parts of flame retardant masterbatches, 3 to 8 parts of a first antioxidant, 0 to 5 parts of a light stabilizer, 1 to 5 parts of a first lubricating agent, and 1.5 to 6 parts of a crosslinking sensitizer. The cable material provided by the invention can be used for the fields of electric wires and cables in the nuclear power industry, communication cables and sheathes in a space technology, irradiation disinfection products of medical instruments, and the like by adding the flame retardant masterbatches in combination with the high-efficiency antioxidant and radiation-resistant resin without additionally adding any anti-radiation agent. The preparation method of the crosslinkable, radiation-resistant, highly-flame-retardant, low-smoke and zero-halogen cable material provided by the invention has the advantages of being simple in process, easy to operate and low in cost.

Description

technical field [0001] The invention relates to a cross-linkable radiation-resistant high flame-retardant low-smoke halogen-free cable material and a preparation method thereof. Background technique [0002] At present, my country's aerospace, atomic energy industry and military fields are developing rapidly. In these fields, a large number of rubber and plastic materials are used, for example, various materials used in the supporting equipment of atomic reactors and aerospace equipment exposed to space radiation. Seals etc. Under normal circumstances, the existing rubber and plastic materials are exposed to high-energy radiation, which will cause a series of chemical changes such as tempering or cross-linking reactions in the macromolecules of the material, and the structure and composition of the material will be destroyed, resulting in serious degradation and failure of the material. Recently, with major aircraft manufacturing companies vigorously developing military and ...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/08C08L23/06H01B3/44H01B7/295C08K13/06C08K9/06C08K3/22C08K9/04C08K3/34C08K5/098C08K5/103C08K5/3492C08J3/22B29B9/06B29C47/92B29C48/92
CPCB29C48/04
Inventor 陈敏李小刚栾珊珊戴红兵张丽本顾金云
Owner JIANGSU DEWEI ADVANCED MATERIALS
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