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Microcapillary films containing phase change materials

A technology of phase change material and thermoplastic material, applied in the field of microcapillary membrane

Inactive Publication Date: 2014-03-19
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The use of phase change materials in heat transfer systems is known; however, such heat transfer systems require further improvements

Method used

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  • Microcapillary films containing phase change materials
  • Microcapillary films containing phase change materials
  • Microcapillary films containing phase change materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] The inventive microcapillary membrane 1 comprising a phase change material was prepared according to the following procedure.

[0079] Matrix materials include linear low density polyethylene (LLDPE), which is known by the trade name DOWLEX TM NG5056G is available from The Dow Chemical Company and has a density of about 0.919 g / cm according to ASTM-D792 3 , according to the melt index measured according to ISO1133 (I 2 ) is about 1.1 g / 10 minutes. Phase change materials include methoxypolyethylene glycol, which goes by the trade name CARBOWAX TM MPEG750 is available from The Dow Chemical Company.

[0080] Both the primary and secondary extruders are single screw extruders. The main extruder was a Betol 1820J with a screw diameter of about 20 mm connected to a gear pump providing a non-pulstile polymer flow. Downstream of the microcapillary film die is a set of nip rolls equipped with an adjustable nip (Dr. Collin GmbH "Techline" CR72T). The secondary extruder was ...

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PUM

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Abstract

The instant invention provides microcapillary films containing phase change materials. The inventive microcapillary film containing phase change materials according to the present invention has a first end and a second end, and comprises:(a) a matrix comprising a thermoplastic material, (b) at least one or more channels disposed in parallel in said matrix from the first end to the second end of said microcapillary film, wherein said one or more channels are at least 5 [mu]m apart from each other, wherein each said one or more channels have a diameter in the range of at least 5 [mu]m; and (c) at least one or more phase change materials disposed in said one or more channels; wherein said microcapillary film has a thickness in the range of from 10 [mu]m to 2000 [mu]m.

Description

[0001] Cross References to Related Applications [0002] This application is a non-provisional application claiming priority to U.S. Provisional Patent Application 61 / 506,298, filed July 11, 2011, entitled "MICROCAPILLARY FILMS CONTAINING PHASE CHANGE MATERIALS," the teachings of which are hereby incorporated by reference into this application, as if reproduced in their entirety . technical field [0003] The present invention relates to microcapillary membranes comprising phase change materials. Background technique [0004] The use of phase change materials in heat transfer systems is known; however, such heat transfer systems require further improvements. For example, such heat transfer systems may benefit from a larger surface area to volume ratio in order to maintain efficient heat transfer capacity. [0005] Although efforts have been made to provide improved heat transfer systems, there remains a need for heat transfer systems that can provide an efficient way to pa...

Claims

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Application Information

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IPC IPC(8): C08J5/18B29D7/01B29C47/04B29C48/08B29C48/11B29C48/12B29C48/19B29C48/20
CPCC08J5/18F28D15/04B29C47/04B29C47/003B29C47/0021B29D7/01B29C47/0028B29K2023/0625B29C47/064C08J2300/22B29C48/08B29C48/11B29C48/12B29C48/19B29C48/20Y10T428/24744
Inventor R.J.库普曼斯L.G.扎拉米巴斯蒂洛C.沃克J.霍普纳
Owner DOW GLOBAL TECH LLC
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