Biodegradable polymer composite with high thermal conductivity and preparation method thereof

A technology of biodegradation and composite materials, which is applied in the field of high thermal conductivity biodegradable polymer composite materials and its preparation, can solve the problems such as the decline of mechanical properties of materials, achieve the improvement of mechanical properties, the preparation method is simple and easy, and the glass transition can be improved The effect of temperature
CN110746757AActive Publication Date: 2020-02-04HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2020-02-04

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Abstract

The invention discloses a biodegradable polymer composite with high thermal conductivity. The biodegradable polymer composite comprises heat-conducting nanofiller and a biodegradable polymer with a shape memory characteristic, wherein the heat-conducting nanofiller is arranged in the biodegradable polymer in order. The heat-conducting nanofiller without chemical modification is mixed with the biodegradable polymer, by use of the shape memory characteristic of the polymer, the heat-conducting nanofiller is arranged in order by stretch induced self-assembly, meanwhile, the heat-conducting nanofiller arranged in order is used as a physical crosslinking site to maintain the orientation state of the material, after the obtained material is heated secondarily, the filler still keeps high orientation, a constructed orientated structure facilitates lap joint of an ordered filler network with a small quantity of heat-conducting nanofiller, so that the production cost is reduced, the material density is reduced, the strength and ductility of the material are enhanced, and the thermal conductivity of the material is improved.
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Description

Technical field

[0001] The invention belongs to the technical field of high thermal conductivity composite materials, and more specifically, relates to a high thermal conductivity biodegradable polymer composite material and a preparation method thereof. Background technique

[0002] With the rapid development of electronic equipment towards miniaturization and integration, efficient heat dissipation has become the basis for ensuring its normal operation. The reliability of electronic equipment operation deteriorates sharply as its internal temperature rises. The main factor affecting the heat dissipation efficiency of electronic equipment is the heat transfer barrier between the heat source and the radiator. There is a gap between the two solids because they can’t fit tightly. The extremely low thermal conductivity of air (0.023Wm -1 k -1 ) Causes heat to be preferentially conducted between two solids in local contact. On the one hand, the large amount of heat accumulated loca...

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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