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High-density polyethylene/paraffin composite phase-change material and preparation method thereof

A technology of high-density polyethylene and composite phase change materials, applied in the field of materials, can solve the problems of materials prone to leakage, etc., and achieve the effect of simple preparation method, high thermal efficiency, and stable phase change temperature

Inactive Publication Date: 2015-09-09
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned technical problems, to solve the material that is prone to leakage due to phase change and to improve the heat release efficiency of the material, the present invention provides a high-density polyethylene / paraffin wax composite phase change material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: The present invention is mixed by high-density polyethylene, composite paraffin phase-change material and inorganic filler, by weight percentage: high-density polyethylene is taken as matrix material 100g, two kinds of liquid paraffin and solid paraffin by 5:1 40g of compound paraffin phase-change material mixed in the ratio of 4, wherein solid section paraffin 30%, 3# liquid paraffin 10% and C14 liquid paraffin 60% are mixed, and 3# liquid paraffin is existing substance, is made of 99 % of C14 and 1% of impurities; the melting point of solid section paraffin ranges from 48 to 50°C, and the melting points of the two liquid paraffins are both 5 to 10°C. The thermal conductivity filler is 10g of alumina powder, and the adsorption filler is 10g of calcium carbonate powder.

[0020] Its preparation method comprises the following steps:

[0021] (1) Preparation of composite paraffin phase change materials: use solid slice paraffin wax with different phase tran...

Embodiment 2

[0024] Example 2: The difference between this example and Example 1 is that in this example, high-density polyethylene is used as the base material to take 100g, and two kinds of liquid paraffin and solid paraffin are mixed in a ratio of 5:1:4 to obtain a composite paraffin phase change material 40g, wherein 20% of solid section paraffin, 60% of 3# liquid paraffin and 20% of C14 liquid paraffin are mixed, 10g of aluminum powder, and 10g of calcium carbonate powder. According to the preparation method in the summary of the invention, the phase transition temperature of the high-density polyethylene / paraffin wax composite phase change material with thermal conductivity is about 24.86°C, and the thermal conductivity is 0.6923W / m.K.

Embodiment 3

[0025] Example 3: The difference between this example and Example 1 is that in this example, high-density polyethylene is used as the base material to take 100g, and two kinds of liquid paraffin and solid paraffin are mixed in a ratio of 5:1:4 to obtain a composite paraffin phase change material 40g, wherein 80% of solid section paraffin, 10% of 3# liquid paraffin and 10% of C14 liquid paraffin are mixed, 10g of silicon carbide powder, and 10g of calcium carbonate powder. According to the preparation method in the summary of the invention, the phase transition temperature of the high-density polyethylene / paraffin wax composite phase change material with thermal conductivity is about 24.54°C, and the thermal conductivity is 0.4948W / m.K.

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Abstract

The invention relates to a high-density polyethylene / paraffin composite phase-change material and belongs to the technical field of materials. The high-density polyethylene / paraffin composite phase-change material is prepared through mixing the raw materials in percentage by weight: 100-200 parts of high-density polyethylene, composite paraffin phase-change material, of which the percentage is 20-60% that of high-density polyethylene, and inorganic filler, of which the percentage is 5-50% that of high-density polyethylene, wherein the composite paraffin phase-change material is uniformly distributed in the high-density polyethylene matrix. According to the high-density polyethylene / paraffin composite phase-change material and the preparation method thereof, a macromolecular material is taken as a carrier, and the adsorptive inorganic filler is added, so that the problem of leakage is solved in a cooperated manner on the premise of guaranteeing the mechanical properties of the material. High-density polyethylene is a good latent-heat energy-storage matrix material and has relatively good compatibility with paraffin, but high-density polyethylene has poor heat-conducting property, so that the heat release of the high-density polyethylene / paraffin composite phase-change material is limited.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a high-density polyethylene / paraffin wax composite phase-change material and a preparation method thereof. Background technique [0002] Phase-change energy storage materials are a class of substances that use their own characteristics of energy absorption or release when their phase changes are accompanied by energy storage and temperature regulation. At present, there are three main energy storage methods of energy storage materials, namely sensible heat energy storage, latent heat energy storage and chemical reaction energy storage. According to the phase change mode, phase change energy storage materials can be divided into four categories: solid-liquid, solid-gas, solid-solid, and liquid-gas phase change energy storage materials. Solid-gas and liquid-gas phase change energy storage materials are rarely used in industrial production due to the gas generated during the phas...

Claims

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Application Information

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IPC IPC(8): C09K5/06C08L23/06C08L91/06C08K3/22C08K3/26C08K3/08C08K3/34C08K3/04
CPCC09K5/06C08L23/06C08L2205/025C08L2205/035C08L2207/062C08L91/06C08K2003/2227C08K2003/265C08K2003/0812C08K3/34C08K3/04
Inventor 谷亚新乔麟奇王晴宋玉博刘运学桂建锋
Owner SHENYANG JIANZHU UNIVERSITY
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