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Method for preparing polystyrene-based phase change microcapsule heat-storage composite material

A phase-change microcapsule and polystyrene-based technology, which is applied in the direction of microcapsule preparation, microsphere preparation, heat exchange materials, etc., can solve the problems that are difficult to meet the actual needs, and achieve the reduction of thermal conductivity and the increase of elongation at break. The effect of large heat transfer rate slowing down

Inactive Publication Date: 2017-04-05
SHAANXI SHENGMAI PETROLEUM
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AI Technical Summary

Problems solved by technology

However, with the improvement of the country's performance requirements for building insulation materials, traditional polystyrene insulation materials have been difficult to meet actual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The preparation method of polystyrene-based phase change microcapsule heat storage composite material comprises the following steps:

[0013] (1) Preparation of phase change microcapsules

[0014] Add distilled water, hydroxypropyl cellulose, calcium carbonate, and butyl stearate into a four-necked reaction flask equipped with condensing reflux, heating temperature control, nitrogen protection and electric stirring, heat up and stir until butyl stearate is melted and uniform Disperse; under nitrogen protection, add styrene, divinylbenzene and azobisisobutyronitrile solution dropwise; increase temperature while adding dropwise, heat up to 80°C for polymerization for 120 min, continue to heat up to 95°C for 90 min to obtain white micro Capsule spherical particles, cool down to below 30°C, stop stirring, filter and discharge; wash once with ethanol, wash with hot distilled water 3 times, and dry naturally to obtain phase-change microcapsules;

[0015] (2) Preparation of p...

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Abstract

The invention relates to a method for preparing a polystyrene-based phase change microcapsule heat-storage composite material. The method for preparing the polystyrene-based phase change microcapsule heat-storage composite material includes the following steps of (1) preparation of a phase change microcapsule and (2) preparation of the phase change microcapsule composite material. By the adoption of the method, the polystyrene-based phase change microcapsule heat-storage composite material is prepared through a mass polymerization method, the heat storage function is obvious, the heat transfer speed is decreased, the heat conductivity coefficient is lowered remarkably and is lower than the specification value about the heat conductivity coefficient of an efficient thermal insulation material in the national standard on the whole, and thus the polystyrene-based phase change microcapsule heat-storage composite material belongs to a good thermal insulation material.

Description

technical field [0001] The invention relates to a preparation method of a polystyrene-based phase change microcapsule heat storage composite material. Background technique [0002] Microcapsule phase change material is a new type of phase change material with a core-shell structure coated with a stable film on the surface of the phase change material using microcapsule technology. Improve the stability of traditional phase change materials through phase change microcapsule technology, strengthen the heat transfer performance of traditional phase change materials, and improve the processing performance of traditional phase change materials. Polystyrene insulation materials are widely used in construction, light industry, shipping and national defense due to their excellent properties such as light weight, insulation, heat insulation, shock resistance, sound insulation, corrosion resistance, water resistance, and chemical stability. At present, among the external wall insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L25/08C08L25/02C08K9/10C08K5/101C08K3/26C08F112/08C08F212/08C08F212/36C08F2/44C08F2/02C09K5/06B01J13/18
CPCC08L25/06B01J13/18C08F2/02C08F2/44C08F112/08C08F212/08C08F212/36C08L2205/02C08L2205/03C09K5/063
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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