Composite phase change material composition for window frame

A technology of composite phase change material and composition, which is applied in the direction of window/door frame, heat exchange material, chemical instrument and method, etc., can solve the problems affecting product performance stability, product flow channel blockage, phase change material leakage, etc. , to improve energy efficiency, reduce indoor temperature fluctuations, and reduce building energy consumption

Inactive Publication Date: 2019-02-15
FOSHAN UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase change will make its technical products change in volume, specifically: after the solid-liquid phase change, the product will seep out of liquid, or brittle cracks will occur, and the sealed product will expand, etc., which will affect the stability of product performance; -After the solid phase change, the flow channel of the product will be blocked, and the density and hardness of the product will change, which will also affect the stability of product performance; no matter which phase change method is used, it will have a significant impact on the service life of the product
In addition, in terms of product forming, due to the phase change characteristics, there are still some problems in the key issues of product forming. For example, the hot pressing method is used to form the material, and the pressing temperature is likely to exceed the phase change temperature of the phase change material itself. During the process, due to the leakage of the phase change material due to the solid-liquid phase change, the performance of the sheet is reduced, and at the same time, brittle cracks are prone to occur after forming, which affects the quality of industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] According to the shape of the user’s window frame, and also calculated according to the local latitude and longitude and the sun’s altitude angle, the temperature range of the composite phase change material suitable for the comfortable temperature of the human body (20-25℃) in the building is designed, and it is a copolymer of ethylene and propylene. Resin material made by copolymerization of olefin 7%, acid cellulose 4%, microcrystalline wax and liquid paraffin, 35%, graphite 5%, asbestos 10%, phenolic and bismaleimide copolymer The ratio of 30% to 8% of polyvinyl chloride is prepared into the window frame composite phase change material composition. Not limited to sheet structure. The process method is not limited to injection molding and other methods. According to different window frame shapes, design corresponding molds. The temperature of the barrel section is 45-50℃, the filling time is 3-10 seconds, and the injection time is 30-150 seconds (extra-thick parts ca...

Embodiment 2

[0023] If the material is molded by casting, it is based on the copolymerization of poly-1-pentene 10%, hypromellose 6%, polyethylene wax and chlorinated paraffin to form a hydrocarbon mixture of 25%, carbon nanotubes 5%, silicic acid The composite phase change material composition of the window frame is prepared with a ratio of 10% calcium, 28% unsaturated polyester, 16% high molecular polymer copolymerized with polyethylene and polystyrene. According to different window frame shapes, design corresponding casting molds, with a shrinkage rate of 0.35%, a gate inclination angle of 18°, a mold temperature slightly higher than the mixing temperature, at 55°C, and a casting tank vacuum degree below 1280Pa. Finally, the prepared material is also filled in the hollow structure of the outer frame of the window as the outer frame interlayer. The outer frame and the material are in direct contact with the reinforced adhesive such as thermal conductive silicone grease.

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PUM

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Abstract

The invention provides composite phase change material composition for a window frame. The composite phase change material composition is prepared from polyolefin, phthalate, a hydrocarbon mixture, acarbon material, a silicate material, a resin material and a polymer. The material composition can absorb or release a large amount of heat on the premise of unchanged size and unchanged performance in a phase change process, so that product performance stability is guaranteed, the problems about cold insulation and heat insulation of the window frame are solved, indoor temperature equalization ofa building is realized, indoor temperature fluctuation is reduced, start times of an air conditioner are reduced, energy consumption of the building is reduced remarkably, and energy using efficiencyis increased.

Description

Technical field [0001] The invention belongs to the technical field of phase change materials, and specifically relates to a window frame composite phase change material composition. Background technique [0002] Phase change material technology mainly uses its characteristics of providing latent heat while changing the phase under the conditions of a specific temperature region, absorbing or releasing a large amount of heat, so as to realize the application of a certain technology. According to its phase change range and characteristics, it can be widely used in different fields, such as aerospace (astronaut clothing, etc.), military fields (military vehicles, ships, aircraft, tanks, etc.), power communication fields (electric cabinets, etc.), Refrigeration equipment field (air conditioning, cold storage, etc.) and construction field (electric heating, etc.). [0003] At present, in the field of building door and window manufacturing in China, window frames have gradually transit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06E06B1/32
CPCC09K5/063E06B1/32Y02E60/14
Inventor 王子缘赵吉诗赵连玉陈东初麦家铭张仲军
Owner FOSHAN UNIVERSITY
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