Irradiation crosslinking halogen-free high flame-retardant cable material and preparation method thereof

A high flame retardant, cable material technology, used in inorganic insulators, plastic/resin/wax insulators, organic insulators, etc., can solve the problem of low flame retardant efficiency, poor self-extinguishing effect of materials, and difficult to pass the VW-1 flame retardant test. requirements, etc., to overcome the effects of poor flame retardant performance, good shell formation and delicate appearance

Inactive Publication Date: 2010-12-15
王进
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Low-smoke halogen-free cable materials currently mainly use a composite system of polyolefin substrates added with inorganic flame-retardant fillers. The inorganic flame-retardant materials are mainly aluminum hydroxide or magnesium hydroxide, but due to the low flame-retardant efficiency of aluminum hydroxide or magnesium hydroxide , the self-extinguishing effect of the material is poor, it is difficult to pass the VW-1 flame retardant test requirements

Method used

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  • Irradiation crosslinking halogen-free high flame-retardant cable material and preparation method thereof
  • Irradiation crosslinking halogen-free high flame-retardant cable material and preparation method thereof

Examples

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preparation example Construction

[0046] Referring to the accompanying drawings, the present invention also provides a method for preparing radiation crosslinked halogen-free high flame-retardant cable material, which includes the following steps:

[0047] A. Stir the hydroxide-based flame retardant, char-forming agent, and flame-retardant lubricant in a high-speed mixer for 2 minutes at high speed, then add the shell-forming agent and continue stirring at high speed to raise the temperature to above 100°C, so that the shell-forming agent can oxidize the hydrogen Flame retardants, char-forming agents and flame-retardant lubricants are used for surface coating.

[0048] B. Then add the silane coupling agent and stir for 5-8 minutes to perform secondary surface treatment.

[0049] C. Then add the initiator-ethanol solution, mix in a high-speed mixer for 4 to 6 minutes, and then discharge.

[0050] D. Use a mixing type twin-screw extruder with a temperature control device and a vacuum device to extrude and granu...

Embodiment 1

[0055] The name of each component of the cable material and the proportion of each component by weight are as follows:

[0056] EVA 80kg;

[0057] Maleic anhydride grafted polyethylene 20kg;

[0058] Magnesium hydroxide 75kg;

[0059] Zinc borate 20kg;

[0060] Antimony trioxide 20kg

[0061] Melamine cyanurate 40kg;

[0062] Methyl silicone rubber 1kg;

[0063] Silane 1kg;

[0064] Cross-linking sensitizer TAIC 3kg;

[0065] Antioxidant 2kg;

[0066] Lubricant 2kg;

[0067] Initiator 0.2kg.

[0068] Preparation method of cable material: After stirring magnesium hydroxide, zinc borate, antimony trioxide and melamine cyanurate at high speed for 2 minutes, add methyl silicone rubber and continue high-speed stirring to raise the temperature to above 100°C, then add silane coupling agent Stir for 8 minutes, carry out secondary surface coating treatment, then add these components according to the weight parts of the above components, mix in a high-speed mixer for 5 minute...

Embodiment 2

[0073] The name of each component of the cable material and the proportion of each component by weight are as follows:

[0074] EVA 40kg;

[0075] POE 40kg;

[0076] Maleic anhydride grafted EVA 20kg;

[0077] Aluminum hydroxide 100kg;

[0078] Magnesium hydroxide 50kg;

[0079] Antimony trioxide 30kg;

[0080] Melamine 40kg;

[0081] Methyl silicone rubber 1kg;

[0082] Silane 2kg;

[0083] Cross-linking sensitizer TAIC 3kg;

[0084] Antioxidant 2kg;

[0085] Lubricant 2kg;

[0086] Initiator 0.4kg.

[0087] The preparation method of the cable material is the same as in Example 1.

[0088] The products prepared in this example were tested after being irradiated and cross-linked. The performance values ​​are expressed as follows. The index values ​​are the standard values ​​that should be achieved according to the national regulations, and the typical values ​​are the performance values ​​of the products prepared in this example.

[0089] Experimental proj...

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Abstract

The invention relates to an irradiation crosslinking halogen-free high flame-retardant cable material and a preparation method thereof. The cable materials comprise the following compositions: 45-90 parts of basic resin, 10-55 parts of functional polyolefine resin, 45-125 parts of carbonate hydroxide flame retardant, 30-50 parts of charing agent, 30-50 parts of flame-retardant lubricant, 0.3-3 parts of methyl silicone rubber shell forming agent, 0.5-2 parts of silane surface modifier, 2-5 parts of crosslinking sensitizing agent, 0.2-2 parts of antioxidant, 1-4 parts of lubricant and 0.1-1.0 parts of initiator. The preparation method of the cable material comprises the following steps of: stirring the carbonate hydroxide flame retardant, the charing agent and the flame-retardant lubricant at a high speed for 2 min; and then adding the shell forming agent and continuously stirring at a high speed until the temperature rises to above 100 DEG C, coating the surface of the mixture with the shell forming agent; adding silane coupling agent and stirring for 5-8 min, and carrying out secondary surface treatment; adding initiator-alcohol solution, and discharging after mixing; extruding and pelletizing; finally drying and cooling to obtain the finished cable material product. The flame retardant performance of the product is obviously enhanced, and the product has good shell forming performance in conbustion without droplets.

Description

technical field [0001] The invention relates to wire and cable materials, in particular to a formulation and preparation method of a radiation crosslinked halogen-free high flame-retardant cable material, which can be widely used in the fields of automobiles, electronics, construction engineering and the like. Background technique [0002] Common flame-retardant wire and cable materials mostly contain halogen flame retardants, which will release a large amount of harmful gas and black smoke when burned, which brings harm to the environment and human health. At present, many countries in the world have introduced laws and regulations to restrict the use of halogen-containing flame retardants in wire and cable materials, and low-smoke halogen-free cable materials will gradually replace halogen-containing cable materials. Low-smoke halogen-free flame-retardant cable materials can be divided into thermoplastic type and cross-linked type. Thermoplastic low-smoke halogen-free cabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/16C08L23/08C08L51/06C08K13/06C08K9/10C08K9/06C08K3/22B29C47/92H01B3/44H01B3/02B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 王进
Owner 王进
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