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Preparation method for nano heat insulation colored thin film based on plant pigment dyeing

A technology of plant pigments and nano-heat insulation, which is applied in the direction of chemical instruments and methods, natural dyes, azo dyes, etc., can solve the problems of less colored transparent heat-insulation films, complex preparation processes, and impact on traffic safety, and achieve improved insulation Thermal and mechanical properties, good combination, and the effect of improving anti-corrosion performance

Inactive Publication Date: 2017-02-15
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, dazzling reflections will affect traffic safety, so it is prohibited to be used on the frame film of the car
[0005] In the prior art, the preparation of transparent heat-insulating films and transparent heat-insulating glass is relatively mature, but there are few methods for preparing colored transparent heat-insulating films
Chinese patent (CN1070867A) discloses a colored transparent heat-insulating decorative film, which is coated with tin dioxide and aluminum alloy or silver alloy compound on the transparent base film by physical vapor deposition method, and then needs to be coated with adhesive after preparation. Complex process and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method based on plant pigment dyed nano heat-insulating color film, comprising the following steps:

[0031] (1) Rinse the collected Spirogyra with clean water, then soak it in a saturated solution of calcium chloride for 20 hours, remove it, wash it, dry it in the sun, and crush it to obtain a green powder, mix the green powder with ethanol, and use 800W power Under ultrasonic 3h, filter, obtain filtrate A and filter residue;

[0032] (2) The filter residue obtained in step (1) is irradiated with ultraviolet rays for 20 minutes, then squeezed by a screw press, adding a pH regulator during squeezing, and filtering the squeezed product to obtain filtrate B, wherein the pH regulator is 0.1mol / L A mixture of sodium bicarbonate and 0.1mol / L sodium chloride, the volume ratio of the two is 1:2;

[0033] (3) Mix the filtrate A prepared in step (1) with the filtrate B obtained in step (2), extract with petroleum ether-methanol mixture, grind and filter, repeat th...

Embodiment 2

[0037] A preparation method based on plant pigment dyed nano heat-insulating color film, comprising the following steps:

[0038] (1) Rinse the collected Spirogyra with clean water, then soak it in a saturated solution of calcium chloride for 30 hours, remove it, wash it, dry it in the sun, and crush it to obtain a green powder, mix the green powder with ethanol, and use 800W power Under ultrasonic 6h, filter, obtain filtrate A and filter residue;

[0039] (2) The filter residue obtained in step (1) is irradiated with ultraviolet rays for 40min, then squeezed by a screw press, adding a pH regulator during squeezing, and filtering the squeezed matter to obtain filtrate B, wherein the pH regulator is 0.1mol / L A mixture of sodium bicarbonate and 0.1mol / L sodium chloride, the volume ratio of the two is 1:3;

[0040] (3) Mix the filtrate A prepared in step (1) with the filtrate B obtained in step (2), extract with petroleum ether-methanol mixture, grind and filter, repeat this for...

Embodiment 3

[0044] A kind of preparation method based on the nano heat-insulating color film dyed by vegetable pigment, comprises the following steps:

[0045] (1) Rinse the collected Spirogyra with clean water, then soak it in a saturated solution of calcium chloride for 22 hours, remove it, wash it, dry it in the sun, and crush it to obtain a green powder, mix the green powder with ethanol, and use 800W power Under ultrasonic 4h, filter, obtain filtrate A and filter residue;

[0046] (2) The filter residue obtained in step (1) is irradiated with ultraviolet light for 25min, then squeezed by a screw press, adding a pH regulator during squeezing, and filtering the squeezed matter to obtain filtrate B, wherein the pH regulator is 0.1mol / L A mixture of sodium bicarbonate and 0.1mol / L sodium chloride, the volume ratio of the two is 1:2.3;

[0047] (3) Mix the filtrate A prepared in step (1) with the filtrate B obtained in step (2), extract with petroleum ether-methanol mixture, grind and fi...

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Abstract

The invention discloses a preparation method for a nano heat insulation colored thin film based on plant pigment dyeing, wherein the preparation method comprises the following steps: firstly, extracting a pigment from spirogyra, to obtain a plant pigment concentrated solution; in the pigment extraction process, combining ultrasound and ultraviolet irradiation, to improve the efficiency; then mixing the plant pigment concentrated solution with anhydrous ethanol, hollow silicon-aluminum based ceramic micro-beads, polyacrylonitrile-based carbon fibers, a pure silicon resin emulsion, an acrylic resin emulsion, nano titanium dioxide, a crosslinking agent and a curing agent evenly to obtain a mixed slurry, spraying the surface of a polyester thin film with the mixed slurry by a spraying method, then placing the sprayed polyester thin film in a vacuum chamber, and treating for a period of time under a certain condition, to obtain the nano heat insulation colored thin film. The prepared colored thin film has the advantages of good heat insulation and sound insulation, excellent heat resistance, excellent mechanical properties, good antibacterial and anticorrosion properties, simple preparation method and low cost.

Description

[0001] Technical field: [0002] The invention relates to the field of film preparation, in particular to a method for preparing a nano heat-insulating color film based on plant pigment dyeing. [0003] Background technique: [0004] At present, there are many monochromatic and heat-insulating films produced in the world. The transparent heat-insulating film produced by 3M in the United States has better light transmission and heat-insulating effects, but the visible light reflectance of this product is too high, and the full-band reflectance is greater than 60%. Because the dazzling reflection will interfere with the normal order, it is prohibited to use in some occasions. For example, dazzling reflections will affect traffic safety, so they are prohibited from being used on the frame film of automobiles. [0005] The preparation of transparent heat-insulating films and transparent heat-insulating glass is relatively mature in the prior art, but there are few methods for pre...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L67/00C09D133/00C09D183/04C09D7/12C09B61/00
CPCC08J5/18C08J7/0427C08J2367/00C08J2433/00C08J2483/04C08K2201/011C09B61/00C09D7/61C09D7/63C09D7/70C09D133/00C09D183/04C08L83/04C08K13/04C08K7/26C08K7/06C08K2003/2241C08L33/00
Inventor 王文庆
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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