Thermal conductive high polymer material applied to pipes and preparation method thereof

A technology of polymer materials and thermally conductive fillers, which is applied in the field of thermally conductive polymer materials and their preparation, can solve the problem of low thermal conductivity and achieve good thermal conductivity and high mechanical strength

Inactive Publication Date: 2010-12-08
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the thermal conductivity of aluminum can reach 13

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Add 1wt% stearic acid to the magnesium oxide and mix at 76°C for 10 minutes to obtain modified magnesium oxide. Take 60kg modified magnesium oxide, 40kg polyethylene, 5kg polyethylene elastomer (POE), 0.1 kg of tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010), 0.5kg of calcium stearate is put into the high-mixer and stirred evenly, and then passed through The twin-screw extruder melts, extrudes, pulls and pellets to produce crosslinkable precursors.

[0026] Using the peroxide cross-linking method, the cross-linkable precursor and the 0.1 wt% dicumyl peroxide (DCP) masterbatch of the cross-linkable precursor are uniformly mixed and extruded into a pipe through an extruder.

[0027] The thermal conductivity of the pipe formed by the above method is increased by 2 to 3 times.

Example Embodiment

[0028] Example 2

[0029] Add stearic acid of 1.5wt% total alumina to alumina, mix at 80℃ for 15 minutes to obtain modified alumina, take 85kg modified alumina, 13kg polyethylene, 2kg POE, 0.21kg antioxidant Agent 1010, 1kg of ethylene bis-stearamide (EBS) is put into a high-mixer and mixed evenly, and then melted, extruded, drawn and pelletized by a twin-screw extruder to produce a crosslinkable precursor.

[0030] The crosslinkable precursor is extruded into a pipe through an extruder, and the vinyl silane is wet-crosslinked during the extrusion molding process.

Example Embodiment

[0031] Example 3

[0032] Add 1.2wt% stearic acid of total graphite to the graphite, mix at 85℃ for 18 minutes to obtain modified graphite, take 70kg modified graphite, 27kg polyethylene, 3kg EPDM rubber, 0.38kg antioxidant Agent 1010, 0.65kg of calcium stearate is put into a high-mixer and stirred evenly, and then melted, extruded, drawn and pelletized by a twin-screw extruder to produce a crosslinkable precursor.

[0033] The crosslinkable precursor is extruded into a tube through an extruder, and crosslinked by irradiation crosslinking.

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PUM

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Abstract

The invention relates to a thermal conductive high polymer material applied to pipes and a preparation method thereof. The material is prepared by the following steps of: preparing a crosslinkable precursor; and crosslinking the crosslinkable precursor, wherein the crosslinkable precursor comprises the following components in part by weight: 5 to 40 parts of polyethylene, 60 to 90 parts of modified thermal conductive filler, 0 to 5 parts of impact modifier, 0.1 to 0.5 part of antioxygen and 0.1 to 1 part of lubricating agent. Compared with the prior art, the preparation method for the thermal conductive high polymer material has the advantage of preparing the thermal conductive high polymer material with good thermal conductivity and high mechanical strength.

Description

Technical field [0001] The invention relates to a polymer material, in particular to a thermally conductive polymer material applied to pipes and a preparation method thereof. Background technique [0002] At present, the heat exchange devices involved in construction heating, new energy, thermal power generation, electronic engineering, fuel oil, gas power engineering and other fields need to be made of metal materials such as copper, aluminum and steel. Although metal materials have good thermal conductivity, they are not resistant to corrosion, costly, complicated processes and high energy consumption. For this reason, the application of plastic pipes is increasing. Compared with the traditional metal pipe, the low temperature embrittlement temperature of PE pipe is very low, and it can be used in the range of -40℃~40℃, and there will be no pipeline embrittlement during installation and construction in winter. Polyethylene is an inert material and can withstand many chemicals...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06B29C47/00C08J3/24C09K5/14
Inventor 肖世英解廷秀
Owner HEFEI GENIUS NEW MATERIALS
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