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Halogen-free low-smoke flame-retardant cable material and preparation method thereof

A low-smoke flame-retardant and cable material technology, which is applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems such as hazards, a large amount of toxic smoke, and the reduction of mechanical properties of cable materials, so as to block conduction and inhibit Open flame generation, avoiding the effects of mechanical properties

Inactive Publication Date: 2018-11-02
ZHONGSHAN LVLANG ADDITIVES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional flame-retardant cables mainly use halogen-containing polymers and halogen-containing flame retardants to obtain good flame-retardant performance through mixing, but if a fire occurs, a large amount of toxic smoke will be generated, causing extreme harm, so the current flame-retardant cable materials are mostly made of Inorganic flame retardant materials such as aluminum hydroxide and magnesium hydroxide are used as flame retardants. The inorganic flame retardants need to be added to about 70% to exert a good flame retardant effect. However, due to the addition of a large amount of inorganic flame retardants, it will cause the cable The mechanical properties of the material are greatly reduced

Method used

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  • Halogen-free low-smoke flame-retardant cable material and preparation method thereof
  • Halogen-free low-smoke flame-retardant cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A halogen-free low-smoke flame-retardant cable material, comprising the following raw materials by weight: 82 parts of polyvinyl chloride, 2 parts of a mixture of molybdenum oxide and copper oxide, 8 parts of expandable graphite, lemon modified by polyvinyl butyral 6 parts of triethyl acid, 18 parts of a mixture of perlite and talc, 2 parts of a mixture of hindered phenol antioxidants: thioester antioxidants=1:2.

[0040] Weigh the raw materials according to the number of parts of the composition ratio; put the accurately weighed polyvinyl chloride, plasticizer, and filler into the mixer and mix for 8 minutes, and then add the weighed smoke suppressant and the Expanded graphite and antioxidant, continue to add to the mixer and stir until the mixing is complete; mix the above-mentioned homogeneously mixed raw materials in a kneader at 100°C for 8 minutes to obtain a homogeneous mixture; add the obtained homogeneous mixture to the twin screw The extruder is plasticized, extr...

Embodiment 2

[0043] A halogen-free low-smoke flame-retardant cable material, comprising the following raw materials: 75 parts by weight of polyvinyl chloride, 4 parts of a mixture of ammonium molybdate and chromium oxide, 10 parts of expandable graphite, modified by polyvinyl butyral 8 parts of triethyl citrate, 20 parts of a mixture of perlite, light calcium carbonate and talc, 3 parts of a mixture of hindered phenol antioxidants: thioester antioxidants=1:3.

[0044] Weigh the raw materials according to the number of parts of the composition ratio; put the accurately weighed polyvinyl chloride, plasticizer and filler into the mixer and mix for 10 minutes, and then add the weighed smoke suppressant and the Expanded graphite and antioxidant, continue to add to the mixer and stir until the mixing is complete; mix the above-mentioned homogeneously mixed raw materials in a kneader at 110°C for 8 minutes to obtain a homogeneous mixture; add the obtained homogeneous mixture to the twin screw The ex...

Embodiment 3

[0047] A halogen-free low-smoke flame-retardant cable material, comprising the following raw materials by weight: 90 parts of polyvinyl chloride, 0.5 parts of a mixture of molybdenum oxide, iron oxide, and zinc oxide, 5 parts of expandable graphite, modified by polyvinyl butyral 3 parts of epoxy octyl stearate, 16 parts of a mixture of kaolin, talc and light calcium carbonate, 1 part of a mixture of hindered phenol antioxidants: thioester antioxidants=1:2.

[0048] Weigh each raw material according to the composition ratio; put the accurately weighed polyvinyl chloride, plasticizer, and filler into the mixer and mix for 5 minutes, and then add the weighed smoke suppressant, Expanded graphite and antioxidant, continue to add to the mixer and stir until the mixing is complete; mix the above-mentioned homogeneously mixed raw materials in a kneader at 90°C for 6 minutes to obtain a homogeneous mixture; add the obtained homogeneous mixture to the twin screw The extruder is plasticized...

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Abstract

The invention discloses a halogen-free low-smoke flame-retardant cable material, comprising, by weight, 75-90 parts of polyvinyl chloride, 0.5-4 parts of a smoke inhibitor, 5-10 parts of expansible graphite, 3-8 parts of a plasticizer, 16-20 parts of a filling agent, and 1-3 parts of an antioxidant. By modifying the various additives, especially using the expansible graphite, low-smoke property and flame retardance of the material herein are greatly improved, and mechanical strength of the material is partly improved.

Description

Technical field [0001] The invention relates to the technical field of wire and cable materials, and more specifically to a halogen-free low-smoke flame-retardant cable material and a preparation method thereof. Background technique [0002] The cable materials are plastics for wire and cable insulation and sheathing, including rubber, plastic, nylon and other varieties. Among them, the cable materials that use plastics as raw materials are mainly PVC or polyethylene based resins. [0003] Traditional flame-retardant cables mainly use halogen-containing polymers and halogen-containing flame retardants to obtain good flame-retardant performance through mixing. However, if a fire occurs, a large amount of toxic fumes will be generated, causing extreme harm. Therefore, most of the current flame-retardant cable materials are Inorganic flame retardant materials such as aluminum hydroxide and magnesium hydroxide are used as flame retardants. Inorganic flame retardants need to be added to...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L29/14C08K13/04C08K7/24C08K3/22C08K3/36C08K3/34C08K5/11C08K5/1515C08K3/24H01B3/44
CPCC08K2003/2248C08K2003/2255C08L27/06C08L2201/02C08L2203/202H01B3/443C08L29/14C08K13/04C08K7/24C08K3/22C08K3/36C08K3/34C08K5/11C08K3/24C08K3/346C08K5/1515
Inventor 李保卫王凯孙栓
Owner ZHONGSHAN LVLANG ADDITIVES CO LTD
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