Special absorbing coating for solar vacuum tube and preparation method thereof

A technology for absorbing coatings and vacuum tubes, which is applied in the field of special absorbing coatings for solar vacuum tubes and its preparation, can solve the problems of low low-temperature absorption rate and poor mechanical properties of coatings, and achieve high conversion rate, strong adhesion and strong weather resistance Effect

A technology for absorbing coatings and vacuum tubes, which is applied in the field of special absorbing coatings for solar vacuum tubes and its preparation, can solve the problems of low low-temperature absorption rate and poor mechanical properties of coatings, and achieve high conversion rate, strong adhesion and strong weather resistance Effect

CN109385128AInactive Publication Date: 2019-02-26JIANGSU JINGZHAN ENERGY TECH CO LTD
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A special absorbing coating for solar vacuum tubes, starting from the outer surface of the inner glass tube, sequentially includes a reflective film, a composite absorbing film and an anti-reflection film, and the composite absorbing film is made of the following components in parts by weight: nitrogen 10 parts of aluminum chloride, 15 parts of graphene, 20 parts of acrylic resin, 2 parts of aluminum powder, 5 parts of cobalt powder, 12 parts of aluminum foam, 1 part of maleic acid grafting agent, 1 part of plant extract, hydrophilic polymer Compound 20 parts.

[0019] The reflective film is a Cu thin film with a thickness of 0.01 μm.

[0020] The anti-reflection film is made of aluminum oxide, silicon nitride, dopamine solution and nano-carbon, with a thickness of 25nm.

[0021] The preparation method of the special absorbing coating for the above-mentioned solar vacuum tube comprises the following steps,

[0022] Step 1, mix each component into a ball mill and grind...

Embodiment 2

[0026] A special absorbing coating for solar vacuum tubes, starting from the outer surface of the inner glass tube, sequentially includes a reflective film, a composite absorbing film and an anti-reflection film, and the composite absorbing film is made of the following components in parts by weight: nitrogen 12 parts of aluminum chloride, 25 parts of graphene, 26 parts of acrylic resin, 5 parts of aluminum powder, 6 parts of cobalt powder, 15 parts of aluminum foam, 2 parts of maleic acid grafting agent, 24 parts of hydrophilic polymer compound.

[0027] The reflective film is a Cu thin film with a thickness of 0.02 μm.

[0028] The anti-reflection film is made of aluminum oxide, silicon nitride, dopamine solution and nano-carbon, with a thickness of 40nm.

[0029] The preparation method of the special absorbing coating for the above-mentioned solar vacuum tube comprises the following steps,

[0030] Step 1, mix each component into a ball mill and grind at 11000rpm, prepare ...

Embodiment 3

[0034] A special absorbing coating for solar vacuum tubes, starting from the outer surface of the inner glass tube, sequentially includes a reflective film, a composite absorbing film and an anti-reflection film, and the composite absorbing film is made of the following components in parts by weight: nitrogen 15 parts of aluminum chloride, 27 parts of graphene, 28 parts of acrylic resin, 2-8 parts of aluminum powder, 8 parts of cobalt powder, 18 parts of foamed aluminum, 3 parts of maleic acid grafting agent, 3 parts of plant extract, hydrophilic 28 parts of polymer compound.

[0035] The reflective film is a Cu thin film with a thickness of 0.03 μm.

[0036] The anti-reflection film is made of aluminum oxide, silicon nitride, dopamine solution and nano-carbon, with a thickness of 45nm.

[0037] The preparation method of the special absorbing coating for the above-mentioned solar vacuum tube comprises the following steps,

[0038] Step 1, mix each component into a ball mill ...

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Abstract

The invention discloses a special absorbing coating for a solar vacuum tube and a preparation method thereof. A composite absorption film in the absorbing coating is made of the following components by weight: 10-15 parts of aluminum nitride, 15-27 parts of graphene, 20-28 parts of acrylic resin, 2-8 parts of aluminum powder, 5-8 parts of cobalt powder, 12-18 parts of aluminum foam, 1-3 parts of amaleic acid grafting agent, 1-3 parts of plant extract and 20-28 parts of a hydrophilic polymer compound. The preparation method comprises the following steps: step 1, mixing all the above components, putting the obtained mixture into a ball mill for grinding, carrying out blending to obtain slurry and performing film drawing to form the composite absorption film; and step 2, sequentially covering the surface of the inner glass tube of the pretreated solar vacuum tube with a reflection film, the composite absorption film and an anti-reflection film in a film pulling manner and carrying out curing to obtain the absorbing coating. The special absorbing coating for the solar vacuum tube in the invention is prepared from a three-layer structure, and the composite absorption film has wide-spectrum infrared absorption and a high conversion rate at low temperature.

Description

technical field [0001] The invention relates to the technical field of solar vacuum tube preparation, in particular to a special absorption coating for solar vacuum tubes and a preparation method thereof. Background technique [0002] With the continuous popularization of green buildings and building energy conservation, the development and utilization of solar collectors have been paid more and more attention. The performance of the solar integrator is reflected in the vacuum tube. Existing solar vacuum tubes are made of two double-layer coaxial glass tubes. The outer surface of the inner glass tube is coated with an absorbing layer that absorbs solar radiation energy, thereby converting light energy into heat energy and obtaining new energy. [0003] Application number 201610736114.1 discloses a solar vacuum tube, which includes a cover glass tube and an inner glass tube, and the outer surface of the inner glass tube is coated with an absorbing layer; the absorbing layer ...

Claims

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Application Information

Patent Timeline
26 Feb 2019
Publication
CN109385128A
IPC
C09D5/32; C09D4/06; C09D7/61; C09D1/00
CPC
C09D1/00; C09D4/06; C09D5/32; C09D7/61; C09D7/70
Inventors
芮唐明; 黄华叶