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Heating cable, semiconductive polymer material and preparation method of semiconductive polymer material

A technology of polymer materials and heating cables, which is applied in the field of semi-conductive polymer materials and its preparation for self-temperature-controlling heating cables. Improved positive resistance temperature coefficient characteristics, good heat resistance effect

Active Publication Date: 2018-06-08
广东环威电线电缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The winter in northern my country is relatively cold, which brings many inconveniences to industrial and agricultural production and people's lives. For example, in crude oil pipelines, the petroleum wax in crude oil is easy to solidify on the inner pipe wall of the oil pipeline in winter, and accumulates more and more, causing oil pipelines to be blocked. , which brings difficulties to the transportation of crude oil
The traditional solution is to add hot water from the boiler to the oil pipeline to melt the petroleum wax solidified on the inner wall of the pipeline, dehydrate it before sending it to the refinery, and send the separated water back to the boiler for circulation. This method requires a lot of Material and financial resources, but also waste a lot of energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The embodiment of the present invention provides a semi-conductive polymer material, the semi-conductive polymer material includes a component A, a component B and a cross-linking agent; in parts by weight, the component A includes:

[0027] LLDPE: 100 parts; carbon black CB: 20 ​​parts; clay: 10.0 parts; paraffin wax: 8.0; BaTiO 3 : 4.5 copies;

[0028] The B component includes:

[0029] EVA: 100 parts; carbon black CB: 20 ​​parts; antioxidant 1010: 6.0 parts; paraffin: 7.5 parts; cross-linking agent: 2 parts.

[0030] It should be noted that in component A, LLDPE is used as the base material, and the addition of pottery clay and BaTiO3 greatly improves the electrothermal stability of the mixture because of its positive charge and the ability to adsorb electrons.

[0031] Carbon black CB is a highly conductive carbon black. In the prior art, conductive carbon black CB is difficult to disperse, resulting in uneven conductivity of semi-conductive polymer materials. The present inv...

Embodiment 2

[0050] The embodiment of the present invention provides a semi-conductive polymer material, the semi-conductive polymer material includes a component A, a component B and a cross-linking agent; in parts by weight, the component A includes:

[0051] LLDPE: 100 parts; Carbon black CB: 20 ​​parts; Pottery clay 10.5 parts; Paraffin wax: 8.2 parts; BaTiO3: 4.7 parts;

[0052] The B component includes:

[0053] 100 parts of EVA; 20 parts of carbon black CB; 6.3 parts of antioxidant 1010; 7.7 parts of paraffin wax;

[0054] The crosslinking agent is DCP, and the weight part is 2.5 parts.

[0055] The preparation method of the semiconductor polymer material for the heating cable:

[0056] Component A granule preparation: The component A is added to a high-speed mixer and stirred. When it reaches 90°C, the evenly stirred component A is added to the granulator that has been preheated to 115°C, and extruded to granulate Part A particles are obtained.

[0057] Component B granule preparation: The co...

Embodiment 3

[0070] The embodiment of the present invention provides a semi-conductive polymer material, the semi-conductive polymer material includes a component A, a component B and a cross-linking agent; in parts by weight, the component A includes:

[0071] LLDPE: 100 parts; carbon black CB: 20 ​​parts; pottery clay 11 parts; paraffin wax: 8.5 parts; BaTiO3: 5 parts;

[0072] The B component includes:

[0073] 100 parts of EVA; 20 parts of carbon black CB; 6.5 parts of antioxidant 1010; 8 parts of paraffin wax;

[0074] The crosslinking agent is DCP, and the weight part is 3 parts.

[0075] The preparation method of the semiconductor polymer material for the heating cable:

[0076] Component A granule preparation: The component A is added to a high-speed mixer and stirred. When it reaches 93°C, the evenly stirred component A is added to the granulator that has been preheated to 118°C, and extruded to granulate Part A particles are obtained.

[0077] Component B granule preparation: The component ...

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Abstract

The invention relates to a semiconductive high-polymer material which comprises a component A, a component B and a crosslinking agent. The component A comprises the following components in parts by weight: 100 parts of LLDPE (linear low-density polyethylene), 20 parts of carbon black (CB), 10.0-11.0 parts of argil, 8.0-8.5 parts of paraffin and 4.5-5.0 parts of BaTiO3. The component B comprises the following components in parts by weight: 100 parts of EVA (ethylene-vinyl acetate), 20 parts of CB, 6.0-6.5 parts of antioxidant 1010, 7.5-8.0 parts of paraffin and 2-3 parts of crosslinking agent. The semiconductive high-polymer material provided by the embodiment of the invention is used for a heating element of a self-temperature-control heating cable, and has the advantages of favorable conductivity, favorable electroheating cycle performance and favorable mechanical properties.

Description

Technical field [0001] The invention relates to the field of industrial polymer materials, in particular to a semi-conductive polymer material for self-controlling heating cables and a preparation method thereof. Background technique [0002] In northern my country, the winter is relatively cold, which brings many inconveniences to industrial and agricultural production and people’s lives. For example, crude oil pipelines. In winter, the petroleum wax in crude oil is easy to solidify on the inner wall of the pipeline, and it accumulates more and more, causing the pipeline to block , Bringing difficulties to crude oil transportation. The traditional solution is to add boiler hot water into the oil pipeline to melt the petroleum wax solidified on the inner wall of the pipeline and send it to the refinery for dehydration treatment. The separated water is then sent back to the boiler for circulation. This method requires a lot of Material and financial resources will also waste a lot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L91/06C08K13/02C08K5/134C08K3/34C08K3/24C08K3/04
CPCC08K3/04C08K3/24C08K3/346C08K5/134C08K13/02C08L23/0815C08L23/0853C08L91/06C08L2201/08C08L2205/02C08L2205/03
Inventor 林群彬
Owner 广东环威电线电缆股份有限公司
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