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Method for constructing fabric surface with passive daytime radiation cooling function and special wettability function

A technology of radiation cooling and functional fabrics, which is applied in the direction of plant fibers, light-resistant fibers, textiles and papermaking, etc., can solve the problems of expensive preparation costs and complicated operation processes, and achieve controllable reaction conditions, simple and easy-to-operate processes, and source of raw materials wide range of effects

Active Publication Date: 2021-02-09
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

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  • Method for constructing fabric surface with passive daytime radiation cooling function and special wettability function
  • Method for constructing fabric surface with passive daytime radiation cooling function and special wettability function
  • Method for constructing fabric surface with passive daytime radiation cooling function and special wettability function

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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 put 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 whiskers int...

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 a fabric surface with a passive daytime radiation cooling function and a special wettability function. The method comprises the following step: combining potassium titanate whiskers and polydimethylsiloxane with a micro-nano structure on the fabric surface by adopting an impregnation method. The defects that the operation process for preparing thesuper-hydrophobic self-cleaning anti-reflection surface is complex, the preparation cost is high and the like are overcome. The method has the advantages of simple process, easy operation, controllable reaction conditions, wide raw material source, low cost, easy degradation, high near-infrared reflectivity, excellent anti-infrared performance, good washing resistance and durable and stable super-hydrophobic self-cleaning performance, and the handfeel of the treated fabric is not obviously 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 Applications(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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