Silicon nitride-modified phase-change and energy-storage microcapsule and preparation method thereof

A phase-change energy storage and microcapsule technology, which is applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problem of large difference in structure between inorganic rigid particles and organic phases, failure to achieve beneficial properties, and damage to polymers. Performance and other issues, to achieve good interface performance, property improvement, and improve the effect of temperature resistance
CN103805142AActive Publication Date: 2014-05-21SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Publication Date
2014-05-21

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Abstract

The invention discloses a silicon nitride-modified phase-change and energy-storage microcapsule, comprising a shell material and a cladded core material, wherein the shell material comprises the following raw materials in parts by weight: 50-100 parts of high-molecular polymers and 1-20 parts of silicon nitride powder which is evenly dispersed into the high-molecular polymers; the core material comprises 50-100 parts of organic phase-change and energy-storage materials and 1-20 parts of silicon nitride powder which is evenly dispersed into the organic phase-change and energy-storage materials. The invention also provides a preparation method of the phase-change energy-storage microcapsule. The thermal conductivity of the phase-change and energy-storage material is improved, overheat and overcold degrees in the phase-change process are inhibited, and meanwhile, the thermal endurance and the abrasive resistance, the thermal shock resistance, the fatigue resistance and the like also are improved. The silicon nitride-modified phase-change and energy-storage microcapsule is relatively simple in preparation technology, available in raw materials, strong in controllability, and applicable to the industrial large-scale production, an existing industrial processing technology can be fully utilized, and the performance of the phase-change and energy-storage microcapsule is improved.
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Description

technical field

[0001] The invention relates to a phase change energy storage microcapsule and a preparation method thereof, in particular to a silicon nitride modified phase change energy storage microcapsule and a preparation method thereof. Background technique

[0002] In today's increasingly prominent energy and environmental issues, phase change energy storage materials (PCMs) with high energy storage density and long cycle life have attracted more and more attention. The research on phase change energy storage microcapsules (MicroPCMs) overcomes a series of problems in the application of PCMs, such as: high fluidity of liquid, easy leakage during phase change, poor compatibility with matrix materials, and low strength of microcapsules , poor thermal conductivity, etc. The application of MicroPCMs has covered various fields such as aerospace, energy-saving buildings, temperature-regulating fibers, battery management, and factory waste heat recovery, and is closely rel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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