Application of basalt fiber fabric in photothermal conversion

A technology of basalt fiber and light-to-heat conversion, which is applied to the components of solar collectors, solar thermal energy, solar thermal power generation, etc., can solve problems such as unstable performance, achieve long service life, high tensile strength, and good application foreground effect

Active Publication Date: 2020-04-17
武汉中科先进材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of unstable performance of traditional light-to-heat conversion materials in extreme environments, the purpose of the present invention is to provide a basalt fiber fabric with light-to-heat co

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Application of basalt fiber fabric in photothermal conversion
  • Application of basalt fiber fabric in photothermal conversion
  • Application of basalt fiber fabric in photothermal conversion

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] The basalt fiber fabric of the present invention is a plain weave or twill weave basalt fiber fabric, wherein the fibers are arranged crosswise in the warp and weft directions, and the side threads of the basalt fiber fabric are sewn with cotton threads.

[0025] The present invention adopts a weft weaving method to prepare the basalt fiber fabric, wherein the continuous basalt fiber is passed through a rapier-type dobby carbon fiber weaving machine and the weft weaving technique is used to make a plain or twill basalt fabric.

[0026] The preparation steps of basalt fiber fabric are as follows:

[0027] (1) First hang the continuous basalt fiber reel on the creel, and draw the yarn ends out of the yarn guide hole of the creel respectively;

[0028] (2) Then the basalt fiber outside the guide hole is drawn to the guide device of the rapier-type dobby fiber braiding machine;

[0029] (3) Reed each basalt fiber, tie knots in groups, and introduce into the braiding...

Example Embodiment

[0036] Example 2

[0037] The difference from Embodiment 1 is:

[0038] In the application of photothermal conversion of basalt fiber fabrics, the experimental process of modifying basalt fiber fabrics is increased. Specifically, the basalt fiber fabrics are placed in a tube furnace and heated at a rate of 2°C / min in an argon atmosphere. After a constant temperature of 500°C for 180 minutes, it was cooled to room temperature at a rate of 2°C / min to obtain a modified basalt fiber fabric.

[0039] Compare the light and heat efficiency of the basalt fiber fabric of Example 1 and the modified basalt fiber fabric of Example 2 under different sunlight, such as image 3 As shown; it can be seen from the curve that the seawater evaporation efficiency of the basalt fiber photothermal fabric is 1.2kg / m under one sunlight 2 ·H, it can reach 1.5kg / m after modification 2 ·H, the evaporation efficiency is 4.9kg / m under four sunlight 2 ·H and 5.4kg / m 2 ·H, it shows that the evaporation efficiency o...

Example

[0041] Comparative Example 2 The absorbance test results of basalt fiber before and after modification, such as Figure 5 As shown; from the figure, it can be seen that the modified basalt fiber thermal fabric has a higher light absorption capacity than the basalt fiber thermal fabric before modification.

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Abstract

The invention relates to the technical field of photothermal conversion materials, in particular to an application of a basalt fiber fabric in photothermal conversion. The basalt fiber fabric is placed on the surface of a foam heat insulation layer to form a photothermal conversion layer, the basalt fiber fabric/foam heat insulation layer assembly is placed on the surface of water or the water isintroduced onto the basalt fiber fabric, the evaporation of the water is promoted through the photothermal conversion heating effect, and the modified basalt fiber fabric has better photothermal conversion capability. Compared with an existing photothermal conversion material, the basalt fiber has the advantages of being high in cost performance, high in tensile strength, good in corrosion resistance, long in service life and the like, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of photothermal conversion materials, in particular to the application of basalt fiber fabrics in photothermal conversion. Background technique [0002] With the rapid development of the world economy and technology, it has led to global climate change and serious shortage of water resources. Over the past few decades, desalination using reverse osmosis technology has become a common technique for obtaining pure water from seawater. Then, during the reverse osmosis treatment process, excessive pressure and electricity are required, and a large amount of energy is consumed in this process, thereby increasing the cost of water treatment. In recent years, the direct use of solar energy for seawater desalination technology has gradually attracted the attention of scientific researchers and advanced environmental protection technology companies. By using various photothermal materials to collect and convert sola...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): F24S70/10F24S70/60C02F1/04C02F103/08
CPCC02F1/04C02F2103/08F24S70/10F24S70/60Y02E10/40
Inventor 喻学锋顾晓滨万鹏高明王昀
Owner 武汉中科先进材料科技有限公司
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