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A shape-memory polymer film with optical properties controllable and its preparation method

A technology of memory polymer and optical properties, applied in the field of preparation and application of intelligent polymer materials, can solve the problems of inability to form thin films, and achieve the effects of low cost, simple method and good light transmittance

Active Publication Date: 2017-06-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these micro-nano structures are prepared in the form of bulk shape memory polymers and cannot form thin films.

Method used

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  • A shape-memory polymer film with optical properties controllable and its preparation method
  • A shape-memory polymer film with optical properties controllable and its preparation method
  • A shape-memory polymer film with optical properties controllable and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Mix styrene, butyl acrylate and benzoyl peroxide in a ratio of 30:20:1, prepare a solution with a glass transition temperature of about 70°C, stir at room temperature, and the stirring rate is 300rad / min. for 30 minutes until the solution is clear and transparent, and a uniformly dispersed styrene-based shape memory polymer solution is obtained. Place the fully mixed solution system in a vacuum box at room temperature to remove air bubbles, and continue vacuuming for 15 minutes after the air pressure reaches 0.1 MPa. In order to better analyze the optical, mechanical and thermal properties of this kind of film, a 4-inch silicon wafer polished on one side was selected as the substrate of the spin-coated film to prepare a smooth-surfaced shape-memory polymer film sample. The substrate used as a template is soaked in absolute ethanol and acetone for 10 minutes before use, and then washed twice with deionized water, and then placed in deionized water for ultrasonic cleaning...

Embodiment 2

[0032] Mix styrene, butyl acrylate and benzoyl peroxide in a ratio of 10:40:1, prepare a solution with a glass transition temperature of about 30°C, stir at room temperature, and the stirring rate is 300rad / min. for 30 minutes until the solution is clear and transparent, and a uniformly dispersed styrene-based shape memory polymer solution is obtained. Place the fully mixed solution system in a vacuum box at room temperature to remove air bubbles, and continue vacuuming for 15 minutes after the air pressure reaches 0.1 MPa. A 4-inch silicon wafer with a cylindrical micropit array etched on the surface is used as a template for backup. The substrate used as a template is soaked in absolute ethanol and acetone for 10 minutes before use, and then washed twice with deionized water, and then placed in deionized water for ultrasonic cleaning for 10 minutes. After the above steps are completed, take out the substrate with tweezers and put it in Dry in an incubator at 80°C for later ...

Embodiment 3

[0034]Mix styrene, butyl acrylate and benzoyl peroxide in a ratio of 30:20:1, prepare a solution with a glass transition temperature of about 70°C, stir at room temperature, and the stirring rate is 300rad / min. for 30 minutes until the solution is clear and transparent, and a uniformly dispersed styrene-based shape memory polymer solution is obtained. Place the fully mixed solution system in a vacuum box at room temperature to remove air bubbles, and continue vacuuming for 15 minutes after the air pressure reaches 0.1 MPa. A 4-inch silicon wafer with an array of hexagonal micropit etched on its surface was used as a template for backup. The substrate used as a template is soaked in absolute ethanol and acetone for 10 minutes before use, and then washed twice with deionized water, and then placed in deionized water for ultrasonic cleaning for 10 minutes. After the above steps are completed, take out the substrate with tweezers and put it in Dry in an incubator at 80°C for late...

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Abstract

The invention discloses a shape-memory polymer film with controllable optical properties and a preparation method thereof. The shape-memory polymer film is made of a styrene-based shape-memory polymer solution prepared in a certain proportion as a raw material, and a variety of shape-memory polymer micro-patterned structure films are prepared by using microlithography silicon-based templates and uniform glue spin coating technology . The preparation method is simple to operate, low in cost, and the thickness of the film is controllable. The micro-nano structure on the surface of the film can be pre-designed according to application requirements, and can be applied to various application requirements in the field of micro-optics. The styrene-based shape-memory polymer film has excellent shape-memory performance, and can realize a process of rapid structural recovery of imprint disappearance on the surface of the structural film under thermal excitation. Combined with the shape memory properties of the material itself, the optical properties of the structural film can be controlled, and it has broad application prospects in tunable micro-optical devices, color-regulated smart buildings, displays, and sensors.

Description

technical field [0001] The invention relates to the field of preparation and application of intelligent polymer materials, in particular to a shape-memory polymer film with controllable optical properties and a preparation method thereof. Background technique [0002] As a new type of actively deformable smart material, shape memory polymers can restore the shaped shape to the original state when stimulated by the external environment. The unique shape memory properties of shape memory polymers make them have a wide range of application prospects in biomedicine, electronic devices, self-healing materials, actuators, and space-deployable structures, all of which utilize the macroscopic large-scale deformation of shape memory polymers and reply process. With the development of optical storage, micro optics, microelectronics, micromechanics, microfluidics, and biomaterial processing, the shape memory effect and recovery characteristics at the micro-nano scale have become a new...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L25/14C08L33/08C08F220/18C08F212/08
Inventor 冷劲松刘彦菊李鹏王文欣金鹏韩余
Owner HARBIN INST OF TECH
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