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Preparation method of shape-memory polymer film capable of spontaneously adjusting light transmission according to indoor temperature

A technology of memory polymer and indoor temperature, applied in the direction of flat products, other household appliances, household appliances, etc., can solve the problem of high cost, achieve the effect of improving living environment and good application prospects

Active Publication Date: 2019-03-12
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these materials are brittle materials, and the cost of reshaping after molding is relatively high

Method used

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  • Preparation method of shape-memory polymer film capable of spontaneously adjusting light transmission according to indoor temperature

Examples

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preparation example Construction

[0043] In the step 1), the preparation method of the reversible shape memory polymer comprises the following steps:

[0044] 1.1) Dissolve the semi-crystalline polymer and plasticizer in dichloromethane at a mass ratio of 4-7:1;

[0045] 1.2) Then the dissolved solution is concentrated by rotary evaporation;

[0046] 1.3) Precipitation with anhydrous ether and vacuum drying to obtain a homogeneous mixture of poly(1,4-butene adipate) and benzyl cinnamic acid;

[0047] 1.4) The mixture was vacuum-dried again to constant weight.

[0048] In the step 2), the micropattern on the surface of the silicon wafer template is prepared by photolithography, soft etching or thermal embossing process.

[0049] In the step 2), the micropattern on the surface of the silicon wafer template is a composite pattern formed by a lattice.

[0050] The lattice unit is straight arc, circular or polygonal grooves or protrusions in micron or nanometer scale.

[0051] In the step 2), the pouring method...

Embodiment 1

[0061] The preparation of a light-transmitting polymer film that can be freely adjusted according to the indoor temperature of the present invention is divided into the following steps:

[0062] Dissolve 10g of poly(1,4-butene adipate) and 2g of benzyl cinnamic acid in 30mL of dichloromethane in a certain proportion, concentrate by rotary evaporation, precipitate with anhydrous ether and dry in vacuo to obtain A homogeneous mixture of white powder poly(1,4-butene adipate) and benzyl cinnamic acid, vacuum-dried to constant weight; using photoetching technology, a silicon wafer template with a diameter of 50 μm was prepared on the surface ; Then place the micropattern on the bottom, cover the resulting mixture on the silicon wafer, and place the whole in a hot press mold. The temperature of the hot press is increased to 60°C, the pressure is increased to 4MPa, and kept for 20 minutes to make the polymer The material penetrates into the silicon wafer template; after the temperatu...

Embodiment 2

[0066] This example is basically the same as Example 1, except that the pattern on the surface of the silicon wafer template by photolithography technology is a groove structure with a diameter and a height of 30 μm.

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Abstract

The invention discloses a preparation method of a shape memory polymer film for automatically adjusting transparency according to an indoor temperature. The preparation method comprises the following steps: selecting a light-transmission reversible shape memory macromolecule with a transition temperature close to the indoor temperature as a substrate material; preparing a micropattern film with a reversible shape memory function on the surface of a silicon wafer template; carrying out hot-press deformation on the macromolecule micropattern film, and carrying out freezing fixation, so as to obtain a film piece capable of automatically adjusting the transparency in response to the change of the room temperature. According to the preparation, the polymer film can be in response to the change of the indoor temperature, the intensity of indoor light can be effectively and intelligently adjusted, and therefore, the life environment of people is improved.

Description

technical field [0001] The invention relates to the field of design of intelligent polymers and patterning of materials, in particular to a preparation method of a shape memory polymer film capable of spontaneously adjusting light transmission according to indoor temperature. Background technique [0002] As a new type of intelligent material, shape memory polymer has attracted more and more attention. So far, most of its application research has focused on the fields of aerospace materials, biomedical materials, self-healing materials and sensors. The characteristic of shape memory polymer is that it can return to its original shape under the stimulation of light, electricity, heat, alternating magnetic field, etc. after being heated and deformed. Compared with shape memory metals, shape memory polymers have better flexibility and formability. [0003] So far, the shape memory properties of SMPs can be divided into two types. One is the SMPs that can recover in one directi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/04C08L75/04C08K5/12C08K5/09B29D7/01
CPCB29D7/01C08K5/09C08K5/12C08L2201/12C08L67/04C08L75/04C08L67/02
Inventor 龚韬潘长江刘涛王翎任叶玮
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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