Silane coupling agent modified silicon dioxide phase change microcapsule and preparation method thereof

A silane coupling agent, phase change microcapsule technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of complex process, leakage of core material, poor water resistance of microcapsules, etc. Water resistance and effect of improving coverage
CN110724499AActive Publication Date: 2020-01-24TIANJIN CHENGJIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN CHENGJIAN UNIV
Publication Date
2020-01-24

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Abstract

The invention discloses a silane coupling agent modified silicon dioxide phase change microcapsule and a preparation method thereof, wherein the phase change microcapsule is prepared by using silane coupling agent modified silicon dioxide as a wall material and using an organic phase change material as a core material through a sol-gel method. According to the invention, the organic group modifiedsilicon dioxide precursor is grafted and introduced by using the silane coupling agent to regulate the polycondensation reaction rate, so that the phenomena of uneven wall material thickness and wallmaterial self-polymerization are reduced, the utilization rate of the wall material is further increased, the coating rate of the phase change microcapsules is obviously increased, and the water resistance and the toughness of the wall material are improved; and sodium silicate as the silicon dioxide precursor is cheap and easy to obtain, and the reaction has no toxicity.
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Description

technical field

[0001] The invention relates to a functional phase-change energy storage material, in particular to a silica phase-change microcapsule modified by a silane coupling agent and a preparation method thereof. Background technique

[0002] Phase change materials refer to functional materials that can store energy through the process of absorbing and releasing heat during the phase change process at a certain temperature range. In recent years, in order to achieve the purpose of energy saving and energy storage, researchers have invested a lot of time, manpower and material resources in the direction of phase change materials. Among them, phase change microcapsule is a kind of phase change energy storage material with encapsulation function. It has the advantages of stable properties and anti-leakage; it can also increase the heat conduction area through microencapsulation and improve the heat transfer rate. The application of phase change microcapsules can effec...

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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