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A kind of shape-fixed phase-change material after flame-retardant treatment and preparation method thereof

A technology of shape-setting phase change materials and flame retardants, which is applied in heat exchange materials, chemical instruments and methods, coatings, etc., can solve the problems of sacrificing the heat storage capacity of materials, large and insignificant addition of flame retardants, etc. Achieve the effect of retaining excellent performance and overcoming defects

Active Publication Date: 2018-05-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although these flame retardant measures have a certain flame retardant effect on the shape-fixed phase change materials, they are not significant.
In addition, flame retardants are often added in large quantities, thus sacrificing the very important heat storage capacity of the material itself

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare a kind of shape-fixed phase-change material according to the present invention according to the following steps:

[0031] (1) Preheat 9g of styrene-butadiene-styrene block copolymer, 3g of high-density polyethylene, 18g of paraffin and 6g of organic montmorillonite in a blast oven at 60°C for 30 minutes until the paraffin is melted and absorbed completely.

[0032] (2) The mixture was melt-blended in a Haake torque rheometer, the mixing temperature was 140° C., the mixing time was 6 minutes, and the rotation speed was 60 rpm.

[0033] (3) Put the above-mentioned mixed sample into the forming mold, hot press it under the tablet machine for 2 minutes, cold press it for 2 minutes, the mold temperature is 140°C, and the pressure is 8MPa. Method", make a spline with a size of 130mm×13mm×3mm and a sample with a size of 100mm×100mm×3mm.

[0034] (4) Prepare a flame retardant coating according to the weight ratio of acrylic resin: acetone: expandable graphite = 10:20:...

Embodiment 2

[0040] Prepare a kind of shape-fixed phase-change material according to the present invention according to the following steps:

[0041] (1) Preheat 12g of styrene-butadiene-styrene block copolymer, 18g of paraffin and 5.4g of organic montmorillonite in a blast oven at 60°C for 30min, until the paraffin is melted and absorbed completely.

[0042] (2) The mixture was melt-blended in a Haake torque rheometer, the mixing temperature was 140° C., the mixing time was 6 minutes, and the rotation speed was 60 rpm.

[0043] (3) Put the above-mentioned mixed sample into the forming mold, hot press it under the tablet machine for 2 minutes, cold press it for 2 minutes, the mold temperature is 140°C, and the pressure is 8MPa. Method", make a spline with a size of 130mm×13mm×3mm and a sample with a size of 100mm×100mm×3mm.

[0044] (4) Prepare a flame retardant coating according to the weight ratio of acrylic resin: acetone: expandable graphite: red phosphorus = 10:20:5:5, and apply it o...

Embodiment 3

[0048] Prepare a kind of shape-fixed phase-change material according to the present invention according to the following steps:

[0049] (1) Preheat 9g of styrene-butadiene-styrene block copolymer, 3g of high-density polyethylene, and 18g of paraffin in a blast oven at 60°C for 30 minutes, until the paraffin is melted and absorbed completely.

[0050] (2) The mixture was melt-blended in a Haake torque rheometer, the mixing temperature was 140° C., the mixing time was 6 minutes, and the rotation speed was 60 rpm.

[0051] (3) Put the above-mentioned mixed sample into a forming mold, hot-press for 2 minutes and cold-press for 2 minutes under the tablet press, the mold temperature is 140° C., and the pressure is 8 MPa to make a sample with a size of 130mm×13mm×3mm.

[0052] (4) Prepare a flame retardant coating according to the weight ratio of acrylic resin: acetone: expandable graphite = 10:10:10, and apply it on the surface of the sample, and let it dry naturally.

[0053] Whe...

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Abstract

The invention relates to a shape-stabilized phase change material subjected to fire-retardant treatment and a preparation method of the shape-stabilized phase change material subjected to fire-retardant treatment, in particular to a shape-stabilized phase change material with paraffin serving as an energy storage medium.The shape-stabilized phase change material subjected to fire-retardant treatment comprises a shape-stabilized phase change material matrix and a fire-retardant coating coated on the outer surface of the matrix.The shape-stabilized phase change material subjected to fire-retardant treatment has the advantages that a fire retardant is mainly concentrated on the surface of the material, superior fire-retardant effects to those of a traditional fire-retardant technology are achieved by less fire retardant addition, excellent performance of the matrix is maintained, and the defect of the traditional fire-retardant technology, namely direct addition of the fire retardant into the matrix is overcome.

Description

technical field [0001] The invention relates to a flame-retardant shaped phase-change material (PCM), in particular to a shaped phase-change material using paraffin as an energy storage medium. The invention also relates to a preparation method of the shape-fixed phase-change material. Background technique [0002] Shaped phase change materials can be used for heat management in the fields of construction, food, medicine, and energy, and have broad application prospects, especially in the fields of building energy conservation. However, the energy storage medium of shaped phase change materials is usually a flammable substance, such as paraffin, which leads to safety hazards in practical applications. Therefore, it is very necessary to improve the flame retardancy of shaped phase change materials. [0003] The main flame retardant treatment method for shaped phase change materials is to add flame retardants to the matrix, such as expandable graphite (EG), polyphosphate amin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06C08L53/02C08L23/06C08K9/04C08K3/34C09D133/00C09D7/61C09K5/06
CPCC08K3/02C08K3/04C08K2003/026C08L91/06C08L2207/062C09D7/61C09D133/00C09K5/063C08L53/02C08L23/06C08K9/04C08K3/346
Inventor 杨睿徐玲王建平
Owner TSINGHUA UNIV
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