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Heat-reflection and energy-storage type polyurethane foam and preparation method thereof

A technology of polyurethane foam and heat reflection is applied in the field of thermal insulation and energy saving, which can solve the problems of unsatisfactory thermal insulation performance, and achieve the effect of good mechanical properties and excellent thermal insulation performance.

Inactive Publication Date: 2014-09-10
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the thermal insulation polyurethane foam (board) utilizes the heat insulation and heat insulation of the foam body to play the role of thermal insulation, so the thermal insulation performance of the existing thermal insulation polyurethane foam is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The graphite used in the preparation method of the heat reflection-energy storage polyurethane foam of the present invention may be micron graphite flakes, nanometer graphite flakes or expanded graphite.

[0023] For the preparation method of the heat reflection-energy storage type polyurethane foam of the present invention, the polymerization reaction between the polyurethane components and foaming to form the heat reflection-energy storage type polyurethane foam can be extrusion foaming, injection molding foaming, casting foaming or Molded foam.

[0024] All the components for forming polyurethane foam described in the present invention are well known to those skilled in the art, including at least (poly)isocyanates, polyols, blowing agents and foaming aids, and of course flame retardants, enhancers, etc. Plasticizers, fillers, and other additives can even contain other polymers used to modify polyurethane, such as epoxy resins. The heat reflection-energy storage pol...

Embodiment 1

[0025] Example 1 100 parts of n-heptadecane, 30 parts of micron-sized natural graphite phosphorus flakes, 100 parts of polyether polyol 635, 130 parts of polymethylene polyphenylisocyanate, 25 parts of blowing agent GFC-141b, 1.5 parts Silicone foam stabilizer JSY2000 and 2 parts of catalyst are mixed in proportion to form a liquid polyurethane foaming system, and then the liquid polyurethane foaming system is poured into a pouring mold with the bottom surface flat, and the polyurethane components are heated or placed to form a Fully polymerize, and finally heat-set to produce heat-reflecting-energy-storage polyurethane foam.

Embodiment 2

[0026] Example 2 Adsorb 80 parts of ethyl stearate into 60 parts of open-cell expanded perlite to make a loaded organic phase change energy storage material, and make a loaded organic phase change energy storage material, 15 parts of expanded graphite, 100 parts Polyether polyol 635, 130 parts of polymethylene polyphenyl isocyanate, 35 parts of foaming agent GFC-141b, 1.5 parts of silicone foam stabilizer JSY2000 and 1 part of catalyst are mixed in proportion to form a liquid polyurethane foaming system. Then the liquid polyurethane foaming system is poured into the pouring mold with the bottom surface flat, and the polyurethane components are fully polymerized by heating or placing, and finally the heat-reflecting-energy-storage polyurethane foam is obtained after heat setting.

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Abstract

The invention discloses a heat-reflection and energy-storage type polyurethane foam and a preparation method thereof. The heat-reflection and energy-storage type polyurethane foam contains a phase change material and graphite. It is preferable that the phase change material enters the polyurethane foam in the form of a phase change material assembly in which expanded perlite is used as a carrier and the phase change material is adsorbed in the expanded perlite carrier. The phase change material may be one or more selected from the group consisting of organic phase change materials and inorganic phase change materials. Graphite may be a micrometer graphite sheet, a nanometer graphite sheet or expanded graphite. The mass percent of the phase change material is appropriately no more than 50%, and the mass percent of graphite is appropriately no more than 20%. The preparation method for the heat-reflection and energy-storage type polyurethane foam may be extrusion foaming, injection foaming, casting foaming or molding foaming. The heat-reflection and energy-storage type polyurethane foam has both a phase change heat storage characteristic and a heat-reflection function and has excellent thermal insulation performance.

Description

1. Technical field [0001] The invention relates to thermal insulation foam and a preparation method thereof, in particular to heat reflection-energy storage polyurethane foam and a preparation method thereof, belonging to the field of thermal insulation and energy saving. 2. Background technology [0002] Polyurethane foam is currently a widely used thermal insulation material. For example, its panels are very popular in European and American countries as building exterior wall insulation panels. It is currently the most important material for building thermal insulation and energy saving. At present, the thermal insulation polyurethane foam (board) utilizes the heat insulation and heat insulation of the foam body to play a thermal insulation effect, so the thermal insulation performance of the existing thermal insulation polyurethane foam is not ideal. 3. Contents of the invention [0003] The object of the present invention is to provide a polyurethane foam with excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/12C08K7/24C08K7/00C08K3/04C09K5/06
Inventor 应宗荣尤虎吴树文
Owner NANJING UNIV OF SCI & TECH