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Photothermal conversion plastic film for building with microporous structure, and preparation method of photothermal conversion plastic film

A technology of microporous structure and photothermal conversion is applied in the field of light conversion film preparation, which can solve the problems of pollution in the preparation process of photothermal conversion film, complex multi-layer composite process and high cost, so as to improve the photothermal conversion efficiency and the preparation process. Simple, high tensile strength effect

Inactive Publication Date: 2018-03-30
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defects of pollution in the preparation process of the existing light-to-heat conversion film, complex multi-layer composite process and high cost, the present invention proposes a film with a light-to-heat conversion agent added to the base material and made into a microporous structure

Method used

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  • Photothermal conversion plastic film for building with microporous structure, and preparation method of photothermal conversion plastic film

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A light-to-heat conversion plastic film for building with a microporous structure. The specific process of preparing the light-reflection film is as follows:

[0034] (1) Mix the barium aluminate doped with lanthanum ion, silica aerogel, polyvinyl alcohol and water in a mass ratio of 1:3:50:200, and stir in a high-speed mixer at room temperature for 90r / min , The time is 20min, mix evenly to obtain a jelly;

[0035] (2) Mix the jelly obtained in step (1), plasticizer glycerin, enhancer polypropylene fiber, and emulsifier Tween 80 according to the mass ratio of 100:5:1:0.5, ultrasonically disperse for 20 minutes, and let stand for 5 minutes , Casting film at room temperature, drying in an oven and placing it for 5 minutes to release the mold to obtain the film prototype;

[0036] (3) Pass the film prototype obtained in step (2) through a unidirectional roller stretcher. The temperature of the first stage of the roller is 40~50℃, the second stage of the roller is set to stretch...

Embodiment 2

[0039] A light-to-heat conversion plastic film for building with a microporous structure. The specific process of preparing the light-reflection film is as follows:

[0040] (1) The magnesia, carbon aerogel, polyvinyl alcohol and water doped with light conversion agent samarium ion are mixed according to the mass ratio of 1:3:100:300, and stirred in a high-speed mixer at room temperature for 120r / min for a time of 30min, mix evenly to obtain a jelly;

[0041] (2) Mix the jelly obtained in step (1), the plasticizer epoxy soybean oil, the reinforcing agent brucite fiber, and the emulsifier Tween 20 according to the mass ratio of 100:8:2:0.5, and ultrasonic dispersion for 30 minutes, After standing for 8 minutes, it is cast into a film at room temperature, dried in an oven and placed for 10 minutes to demould, and the film prototype is obtained;

[0042] (3) Pass the film prototype obtained in step (2) through a unidirectional roller stretcher. The temperature of the first stage of the...

Embodiment 3

[0045] A light-to-heat conversion plastic film for building with a microporous structure. The specific process of preparing the light-reflection film is as follows:

[0046] (1) Calcium aluminate, alumina aerogel, polyvinyl alcohol and water doped with silver ion as a light conversion agent are mixed according to the mass ratio of 1:5:50:250, and stirred at room temperature for 100r / min in a high-speed mixer. The time is 30min, mix evenly to obtain a jelly;

[0047] (2) Mix the jelly obtained in step (1), plasticizer sorbitol, enhancer wollastonite fiber, and emulsifier Tween 80 according to the mass ratio of 100:10:3:1, ultrasonically disperse for 30 minutes, and let stand After 8 minutes, it is cast at room temperature to form a film. After drying in an oven, it can be demoulded after being placed for 10 minutes to obtain the film prototype;

[0048] (3) Pass the film prototype obtained in step (2) through a unidirectional roller stretcher. The temperature of the first stage of th...

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Abstract

The invention belongs to the technical field of preparation of light conversion films, and provides a photothermal conversion plastic film for building with a microporous structure, and a preparationmethod of the photothermal conversion plastic film. According to the preparation method, a film is made by adding a light-transmitting agent and aerogel into polyvinyl alcohol resin, and the film having a photothermal conversion effect is prepared by uniaxially stretching. Since the light-transforming agent and polyvinyl alcohol are incompatible systems and the stress orientations are different ina stretching process, the film, which is stretched under the assistance of the aerogel, forms the microporous structure around the light-converting agent, the light is reflected and refracted for a plurality of times in micropores of the film, and the photothermal conversion efficiency is further increased. Compared with the traditional method, the photothermal conversion plastic film prepared bythe method is high in photothermal conversion efficiency and has higher optical selectivity and tensile property; furthermore, the whole preparation process is simple, lower in cost and little in pollution to environment, thus being widely popularized and applied.

Description

Technical field [0001] The invention belongs to the technical field of the preparation of light conversion films, and provides a light-to-heat conversion plastic film for buildings with a microporous structure and a preparation method. Background technique [0002] With the rapid growth of the population, the rapid development of urban construction and the increasing requirements of people for the quality of life, energy consumption has increased year by year, and the global greenhouse effect has become increasingly prominent, making the development and application of renewable energy and energy-saving technologies as the core low Carbon technology has become the strategic goal of energy development in all countries in the world. People have been researching and developing various materials and technologies that can effectively use and save energy. Among them, solar energy is an inexhaustible clean energy. Its development and utilization Has become an important issue worldwide. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K7/26C08K7/24C08K3/24C08K3/22C08K3/02C08J5/18B29C55/04B29C35/02
CPCB29C35/02B29C55/04C08J5/18C08J2329/04C08K3/24C08K7/24C08K7/26C08K2003/026C08K2003/222
Inventor 陈庆贯大为
Owner CHENDU NEW KELI CHEM SCI CO LTD
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