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Ferrocene modified low-smoke and halogen-free flame-retardant cable material

A flame retardant cable material, ferrocene technology, applied in circuits, electrical components, plastic/resin/wax insulators and other directions, can solve the problem of non-compliance with environmental protection requirements, XLPE cable material mechanical properties, electrical properties have a greater impact, and the material is easy to use. Problems such as burning and dripping

Inactive Publication Date: 2017-04-19
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many fires are caused by insulation fires caused by cable overload or short circuit. Although PVC insulation itself has a certain flame retardant effect, PVC insulation will release a lot of smoke and toxic gases when it is on fire, and it is easy to drip when burning. , so not only will it cause a fire, but it will also affect the escape of personnel. However, it is difficult to add flame retardants to polyethylene insulation. Basically, polyethylene insulation is used in China without adding flame retardants, so this material is also easy to catch fire. ignite and drip, causing a fire
[0003] In the prior art, inorganic flame retardants such as magnesium hydroxide or aluminum hydroxide are added to polyethylene insulation, but this inorganic flame retardant has a great influence on the mechanical and electrical properties of XLPE cable materials, and is not easy to process. Therefore, it is rarely used in the field of wire and cable
The addition of organic flame retardants to polyethylene insulation basically contains halogen elements, which will release toxic gases when burned, and do not meet environmental protection requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Weigh 100 parts of polyolefin, 1 part of antimony trioxide, 2 parts of nano-graphene powder, 2 parts of ferrocene, and 0.5 part of dibutyltin dilaurate, and add them into a high-speed mixer successively for mixing and stirring, and mix and stir at 300 Mix for 15 to 20 minutes at a speed of rpm to obtain a premix;

[0021] (2) Knead the premix obtained in step (1) in a kneader, and knead in a kneader for 20 minutes at a temperature of 145° C. to obtain raw materials after kneading;

[0022] (3) Add the mixed raw materials obtained in step (2) into a two-stage single-screw extruder, extrude and granulate at a body temperature of 150-185°C and a head temperature of 190-210°C to obtain low-smoke Halogen-free flame retardant cable compound.

[0023] According to the tests, the oxygen index of the prepared cable material can reach 36, the UL94 flame retardancy level can reach V-0, the flame smoke density is 49, and the toxicity index is 2.0.

Embodiment 2

[0025] (1) Weigh 100 parts of polyolefin, 3 parts of antimony trioxide, 8 parts of nano-graphene powder, 5 parts of ferrocene, and 1.5 parts of dibutyltin dilaurate, and add them to the high-speed mixer successively, and mix them at 350 rpm Mixing 16min under the rotating speed of speed, obtains premix;

[0026] (2) Knead the premix obtained in step (1) in a kneader, and knead in a kneader for 22 minutes at a temperature of 148° C. to obtain raw materials after kneading;

[0027] (3) Add the mixed raw materials obtained in step (2) into a two-stage single-screw extruder, extrude and granulate at a body temperature of 150-185°C and a machine head temperature of 190-210°C to obtain low Smoke-free halogen flame retardant cable compound.

[0028] According to the tests, the oxygen index of the prepared cable material can reach 37.5, the UL94 flame retardant level can reach V-0, the flame smoke density is 42, and the toxicity index is 1.7.

Embodiment 3

[0030] (1) Weigh 100 parts of polyolefin, 1.5 parts of antimony trioxide, 4 parts of nano-graphene powder, 3 parts of ferrocene, and 0.8 part of dibutyltin dilaurate, and add them into a high-speed mixer successively, and mix them at 400 rpm Mixing 17min under the rotating speed of speed, obtains premix;

[0031] (2) kneading the premix obtained in step (1) in a kneader, and kneading in a kneader for 24 minutes at a temperature of 150° C. to obtain raw materials after kneading;

[0032] (3) Add the mixed raw materials obtained in step (2) into a two-stage single-screw extruder, extrude and granulate at a body temperature of 150-185°C and a machine head temperature of 190-210°C to obtain low Smoke-free halogen flame retardant cable compound.

[0033] Tests show that the prepared cable material has an oxygen index of 37, a UL94 flame retardant rating of V-0, a flame smoke density of 45, and a toxicity index of 1.74.

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PUM

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Abstract

The invention belongs to the field of flame-retardant wires and cables and particularly relates to a ferrocene modified low-smoke and halogen-free flame-retardant cable material. The cable material comprises following raw materials in parts by weight: 100 parts of polyolefin, 1-3 parts of antimonous oxide, 2-8 parts of a nano graphene powder, 2-5 parts of ferrocene, and 0.5-1.5 parts of dibutyltin dilaurate. By carrying out stirring, mixing, kneading, extrusion pelletizing on the raw materials, the flame-retardant cable material is finally prepared. The flame-retardant cable material is free of halogen elements, does not release poisonous gas during burning, and can achieve the purpose of environmental protection, the oxygen index of the modified cable material can reach 36, the UL94 flame-retardant level can reach V-0, the maximum of flame smoke density does not exceed 50, the toxicity index does not exceed 2.0, and the cable material is low in smoke, is halogen-free and environmentally friendly, and has an excellent flame retardant efficiency.

Description

technical field [0001] The invention belongs to the field of flame-retardant modification of cable materials, and in particular relates to a ferrocene-modified low-smoke halogen-free flame-retardant cable material. Background technique [0002] According to the statistics of the National Fire Protection Bureau, 30% of the fires in China are caused by the fire of cables. Since traditional cables mostly use polyvinyl chloride (PVC) insulation and polyethylene insulation, even for flame-retardant cables, no flame retardants are added to the insulation materials, and only flame-retardant materials are used in the cable sheath material. Many fires are caused by insulation fires caused by cable overload or short circuit. Although PVC insulation itself has a certain flame retardant effect, PVC insulation will release a lot of smoke and toxic gases when it is on fire, and it is easy to drip when burning. , so not only will it cause a fire, but it will also affect the escape of pers...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08K13/02C08K3/22C08K3/04C08K5/57C08K5/56H01B3/44
CPCC08K13/02C08K3/04C08K3/2279C08K5/56C08K5/57C08K2003/2275C08K2201/011C08L2201/02C08L2201/22C08L2203/202H01B3/448C08L51/06
Inventor 陈建利
Owner ANHUI UNIVERSITY OF ARCHITECTURE