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Phase-change energy-storage polyurethane foam and preparation method thereof

A polyurethane foam and phase-change energy storage technology, which is applied in the field of phase-change energy storage rigid polyurethane foam and its preparation, can solve the problems of aggravated foam quality reduction, application obstacles, etc., and achieve energy saving, wide application, and fireproof performance excellent effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of MicroPCMs, the structure of the polyurethane foam has been partially changed, that is, the local fault structure, coupled with the influence of the previous DBTL, will inevitably aggravate the reduction of the foam quality (including mechanical properties and other factors), which will cause certain obstacles for future applications.

Method used

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  • Phase-change energy-storage polyurethane foam and preparation method thereof
  • Phase-change energy-storage polyurethane foam and preparation method thereof
  • Phase-change energy-storage polyurethane foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Using n-octadecane (melting point: 28.5°C, latent heat of phase transition: 242.4kJ / kg) as the capsule core and polyurethane-polysiloxane as the capsule wall, MicroPCMs were prepared according to the in-situ polymerization method, with an average particle size of 5 μm. The latent heat of phase change of MicroPCMs measured by differential scanning calorimetry (DSC) was 105.7 kJ / kg. In the phase change energy storage microcapsules, the organic phase change material accounts for 40% of the weight of the phase change energy storage microcapsules, the amount of the crosslinking agent is 6% of the weight of the phase change energy storage microcapsules, and the polysiloxane is Silica accounts for 10% of the weight of the microcapsule wall.

[0039] Using ultrasonic equipment, 60 parts of nano-calcium carbonate (average particle size is 70nm) and 20 parts of MicroPCMs are uniformly dispersed in 150 parts of PAPI, and left for 20h to obtain mixture I, wherein the dispersion ado...

Embodiment 2

[0051] In embodiment 1, 60 parts of nano-calcium carbonates are changed into 50 parts, add 10 parts of red phosphorus simultaneously, all the other materials and operating conditions are constant, obtain sample E. The oxygen index of the polyurethane foam was determined to be 30 by the oxygen index method, indicating that the synergistic flame retardant system of nano-calcium carbonate and red phosphorus has a better flame retardant effect.

Embodiment 3

[0053] In Example 1, the proportion of the organic phase-change material in the weight of the phase-change energy storage microcapsules was increased to 65%, and the remaining materials and operating conditions were kept unchanged to obtain sample F. The phase transition temperature of the polyurethane foam was determined by DSC to be 27.2° C., and the latent heat of phase transition was 79.6 kJ / kg; meanwhile, the oxygen index of the foam was measured to be 24. That is, as the proportion of organic phase change materials increases, the latent heat value of phase change of polyurethane foam increases, while the flame retardancy decreases.

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Abstract

The invention discloses a phase-change polyurethane foam and a preparation method thereof. The foam is prepared by subjecting a polyurethane foam raw material to processes of reacting, foaming, and curing; wherein the polyurethane foam raw material comprises polyether, polymethylene polyphenyl isocyanate, silicone oil, and methyl chloride; the reactions are carrier out after the mixing of a phase-change energy-storage microcapsule and the polyurethane foam raw material, the phase-change energy-storage microcapsule is composed of a capsule wall made of polyurethane-polysiloxane and a capsule core made of an organic phase-change material, and polycarbodiimide is taken as the cross-linking agent. The phase-change energy-storage microcapsule integrates the advantages of organic materials and inorganic materials together, namely has the organic materials' advantages of flexibility and elasticity, also has the inorganic materials' advantages of excellent mechanical performance and fire-retardant performance, and overcomes the shortage of easy separation between the conventional microcapsule and the foam substrate.

Description

technical field [0001] The invention relates to a rigid polyurethane foam and a preparation method thereof, more specifically, to a phase-change energy storage rigid polyurethane foam and a preparation method thereof. The phase change energy storage rigid polyurethane foam of the present invention not only has the function of temperature adjustment, but also has the functions of environmental protection, flame retardancy and improvement of the performance of the polyurethane matrix. Background technique [0002] Polyurethane is a polymer with repeating structural units of urethane segments made by the reaction of isocyanate and polyol. Polyurethane materials have excellent performance, wide range of uses, and many types of products. Polyurethane foam is the main variety of polyurethane, accounting for about 70% of the total. It has become one of the fastest-growing synthetic materials in the past 10 years, with an annual growth rate of 7. %about. At present, from a global ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08G18/76C08G18/48C08J9/00C08K9/10C08K9/04C08K3/26C08K3/36C08K3/22C08K3/02
Inventor 赵亮方向晨王刚马蕊英孙剑锋
Owner CHINA PETROLEUM & CHEM CORP
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