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Solar energy heat absorbing coating material, preparation method and applications thereof

A technology of solar heat absorbing and heat absorbing material is applied in the field of solar heat absorbing paint and its preparation, which can solve the problems of heat waste, slow heat transfer rate, low heat absorbing efficiency, etc. The effect of endothermic efficiency

Active Publication Date: 2019-04-23
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a solar heat absorbing paint and its preparation method and application, which solves the problems of low heat absorption efficiency and slow heat conduction rate of solar heat absorbing paint in the prior art, which cause heat waste

Method used

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  • Solar energy heat absorbing coating material, preparation method and applications thereof
  • Solar energy heat absorbing coating material, preparation method and applications thereof
  • Solar energy heat absorbing coating material, preparation method and applications thereof

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preparation example Construction

[0033] The preparation method of a solar heat absorption coating of the present invention includes the following steps: 1) Take polyethylene terephthalate resin, crush it into particles with a size of 3-5 mm, and use them for later use; 2) Take vinyl chloride-vinyl isobutylene Base ether, adhesive, black endothermic material and anti-aging agent are added to the granules obtained in step 1) and mixed for 1-5 min; 3) the mixture obtained in step 2) is added to a single-screw or twin-screw extruder. Press, the temperature of the machine cavity is 75-85℃, the temperature of the extruder is 90-96℃, the average residence time is no more than 1min, cooling, tablet press, cooling, crushing, get solar heat absorption coating.

[0034] A solar heat absorber of the present invention, see attached image 3 , Attached Figure 4 And Figure 5 , Including the heat absorption runner 2 made of metal material, the inner surface of the heat absorption runner 2 is provided with a first anti-corrosio...

Embodiment 1

[0040] The manufacturing method of the solar water heater of the present invention includes the following steps:

[0041] 1) The solar heat absorption paint used in the preparation of the absorption coating 4

[0042] a. Weigh the raw materials according to the following weight percentages: 60% polyethylene terephthalate resin, 15% vinyl chloride-vinyl isobutyl ether, 15% adhesive, and 10% black heat-absorbing material;

[0043] b. Take polyethylene terephthalate resin and crush it into 3mm particles for use;

[0044] c. Take vinyl chloride-ethylene isobutyl ether, adhesive, black heat-absorbing material and anti-aging agent, add to the above particles, and mix for 1 minute;

[0045] d. Add the above mixture to a single-screw extruder and squeeze. The temperature of the cavity is 75°C, the temperature of the extruder is 90°C, and the average residence time does not exceed 1 min. Cool, press the tablet with the tablet machine, cool, and crush. Obtain the solar heat absorption paint used...

Embodiment 2

[0053] The manufacturing method of the solar water heater of the present invention includes the following steps:

[0054] 1) The solar heat absorption paint used in the preparation of the absorption coating 4

[0055] a. Weigh the raw materials according to the following weight percentages: polyethylene terephthalate resin 70%, vinyl chloride-vinyl isobutyl ether 5%, acrylic resin modified polysiloxane 12%, barium sulfide 10%, Ferrous sulfide 2%, aluminosilicate 1%, wherein the adhesive is acrylic resin modified polysiloxane, the black heat-absorbing material is barium sulfide, and the anti-aging agent is aluminosilicate;

[0056] b. Take polyethylene terephthalate resin and pulverize it into 5mm particles for use;

[0057] c. Take vinyl chloride-ethylene isobutyl ether, adhesive, black heat-absorbing material and anti-aging agent, add to the above particles, and mix for 5 minutes;

[0058] d. Add the above mixture to a twin-screw extruder for extrusion. The temperature of the cavity i...

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Abstract

The invention discloses a solar energy heat absorbing coating material, a preparation method and applications thereof, and belongs to the technical field of solar energy heat absorbing materials, wherein the solar energy heat absorbing coating material comprises the following raw materials by weight: 60-70% of a polyethylene terephthalate resin, 5-15% of vinyl chloride-ethylene isobutyl ether, 5-15% of a binder, 5-12% of a black heat absorbing material, and 0-1% of an anti-aging agent. The present invention further provides the preparation method of the solar energy heat absorbing coating material, wherein the method comprises: crushing the raw materials, mixing, extruding, tableting, and crushing to prepare the product. According to the present invention, the solar energy heat absorbing coating material can be used in solar water heaters, is a black epoxy resin coating material, and has advantages of good heat absorption effect, high heat absorption efficiency, aging resistance, longservice life, environmental protection and no pollution; the preparation method is simple, and the cost is low; and with the application of the solar energy heat absorbing coating material in solar water heaters, the water temperature is increased by 2-3 DEG C, the temperature rise rate is increased by about 8%, and the heat loss is reduced by 10-20%.

Description

Technical field [0001] The invention belongs to the technical field of solar heat absorbing materials, and particularly refers to a solar heat absorbing paint and a preparation method and application thereof. Background technique [0002] Solar water heater is a heating device that converts sunlight energy into heat energy, heating water from low temperature to high temperature to meet people's hot water needs in life and production. The structure of solar water heaters mainly includes heat collectors, water storage tanks, brackets and other related parts. The solar water heaters convert solar energy into heat through the heat collectors to heat the cold water in the water storage tanks to obtain hot water. [0003] As attached figure 1 And figure 2 As shown, the heat collector of the existing solar water heater is generally formed by welding a certain wide heat absorption sheet (11) and a volumetric flow channel composed of a pipe (22), and the heat absorption sheet (11) absorbs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/02C09D127/06C09D183/10C09D5/32C09D163/00C09D5/08
CPCC08K3/36C08K2003/2241C08K2003/265C08K2003/3009C08L2205/03C09D5/08C09D5/32C09D163/00C09D167/02C08L27/06C08L83/10C08K3/34C08K3/30
Inventor 庄长宇蒋建平韩冰门广岳
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER