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A construction method of fabric surface with passive daytime radiation cooling function and special wettability function

A technology for radiation cooling and functional fabrics, which is applied to plant fibers, light-resistant fibers, textiles, and papermaking. It can solve the problems of expensive preparation costs and complicated operation processes, and achieve controllable reaction conditions, easy process operation, and convenient operation. Effect

Active Publication Date: 2021-11-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method for constructing the fabric surface with passive daytime radiation cooling function and special wettability function. The micro-nano structure of potassium titanate whiskers and polydimethylsiloxane is combined with the fabric surface by impregnation method. Combined, it solves the shortcomings of complex operation process and expensive preparation cost for preparing superhydrophobic self-cleaning anti-reflection surface

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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  • A construction method of fabric surface with passive daytime radiation cooling function and special wettability function
  • A construction method of fabric surface with passive daytime radiation cooling function and special wettability function
  • A construction method of fabric surface with passive daytime radiation cooling function and special wettability function

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Effect test

Embodiment 1

[0035] Step 1: Let polydimethylsiloxane form an emulsion in water by means of ultrasound;

[0036] In one embodiment, this step can be specifically performed as follows: at a mass ratio of 1.5 wt%, polydimethylsiloxane is added to deionized water, and ultrasonicated at 40 °C for 3 h to form an emulsion.

[0037] Step 2: The potassium titanate whiskers are uniformly dispersed in the emulsion in the previous step to form a suspension by means of ultrasound.

[0038]In one embodiment, this step can be specifically performed as follows: first, cut 4 pieces of cotton cloth according to the size of 5×5 cm, and put them in a beaker, and then undergo ultrasonication with acetone, deionized water, and absolute ethanol for 10 minutes, and place the Dry in an oven at 60°C and cool for later use. Weigh 0.5 g of potassium titanate whiskers on an electronic balance for later use, place the emulsion obtained in step 1 in an ultrasonic environment, slowly add the weighed potassium titanate w...

Embodiment 2

[0043] Step 1: Let polydimethylsiloxane form an emulsion in water by means of ultrasound;

[0044] In one embodiment, this step can be specifically performed as follows: Add polydimethylsiloxane to deionized water at a mass ratio of 0.5 wt%, and ultrasonicate at 30°C for 10 h to form an emulsion.

[0045] Step 2: The potassium titanate whiskers are uniformly dispersed in the emulsion in the previous step to form a suspension by means of ultrasound.

[0046] In one embodiment, this step can be specifically performed as follows: first, cut 4 pieces of cotton cloth according to the size of 5×5 cm, and put them in a beaker, and then undergo ultrasonication with acetone, deionized water, and absolute ethanol for 10 minutes, and place the Dry in an oven at 60°C and cool for later use. Weigh 0.5 g of potassium titanate whiskers on an electronic balance for later use, place the emulsion obtained in step 1 in an ultrasonic environment, slowly add the weighed potassium titanate whisker...

Embodiment 3

[0048] Step 1: Let polydimethylsiloxane form an emulsion in water by means of ultrasound;

[0049] In one embodiment, this step can be specifically performed as follows: Add polydimethylsiloxane to deionized water at a mass ratio of 2.0 wt%, and ultrasonicate at 50°C for 0.5 h to form an emulsion.

[0050] Step 2: The potassium titanate whiskers are uniformly dispersed in the emulsion in the previous step to form a suspension by means of ultrasound.

[0051] In one embodiment, this step can be specifically performed as follows: first, cut 4 pieces of cotton cloth according to the size of 5×5 cm, and put them in a beaker, and then undergo ultrasonication with acetone, deionized water, and absolute ethanol for 10 minutes, and place the Dry in an oven at 60°C and cool for later use. Weigh 0.5 g of potassium titanate whiskers on an electronic balance for later use, place the emulsion obtained in step 1 in an ultrasonic environment, slowly add the weighed potassium titanate whiske...

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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Abstract

The invention discloses a method for constructing the fabric surface with passive daytime radiation cooling function and special wettability function. The impregnation method is used to combine potassium titanate whiskers and polydimethylsiloxane with the micro-nano structure on the fabric surface , which solves the shortcomings of complex operation process and high preparation cost for preparing superhydrophobic self-cleaning anti-reflection surface. The method has the advantages of simple and easy operation, controllable reaction conditions, wide source of raw materials, low cost and easy degradation, high near-infrared reflectivity, excellent anti-infrared performance, good washing resistance, durable and stable superhydrophobic self-cleaning performance, and the handle of the treated fabric is not significantly reduced.

Description

technical field [0001] The invention relates to a method for constructing a passive daytime radiation cooling function and a special wetting potassium titanate whisker film layer on the surface of a fiber fabric. Background technique [0002] Since the German botanist Barthlott discovered the self-cleaning effect and superhydrophobic phenomenon on the surface of lotus leaves in 1997, the superhydrophobic surface has attracted great interest and extensive attention of researchers. The so-called super-hydrophobic surface refers to the surface whose contact angle with water droplets is greater than 150° and the rolling angle is less than 10°. There are a wide range of applications. [0003] Radiation cooling technology is a safe and environmentally friendly passive cooling technology that does not require additional energy consumption during the cooling process. It is developed based on the black body radiation law proposed by Planck in 1900. Since the earth's atmosphere has ...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/643D06M11/46D06M101/06
CPCD06M11/46D06M15/643D06M2101/06D06M2200/12D06M2200/25
Inventor 黄剑莹沈刚赖跃坤
Owner FUZHOU UNIV
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