Radiation refrigeration fiber membrane and preparation method and application thereof

A technology of radiation refrigeration and fiber membrane, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc. It can solve the problems of poor refrigeration performance, complicated preparation method, poor air permeability, etc., and achieve good radiation refrigeration effect and preparation method Simple, low-cost effect

Inactive Publication Date: 2019-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a radiation refrigeration fiber membrane and its preparation method and application, so as to overcome the defects of poor radiation refrigeration performance, poor air permeability, complicated preparation method and high cost of radiation refrigeration materials in the prior art

Method used

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  • Radiation refrigeration fiber membrane and preparation method and application thereof
  • Radiation refrigeration fiber membrane and preparation method and application thereof
  • Radiation refrigeration fiber membrane and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] At room temperature, measure 2ml of tetraethyl silicate (reagent grade, 98%, Aladdin Reagent (Shanghai) Co., Ltd.) and disperse it in 35ml of absolute ethanol, stir well to form solution 1; measure 65ml of absolute ethanol (premium grade Pure GR 500ml, Sinopharm Chemical Reagent Co., Ltd.), 10ml deionized water and 9ml ammonia water (superior pure GR 500ml, Sinopharm Chemical Reagent Co., Ltd.), mixed evenly to obtain solution 2; solution 1 was mixed at a rate of 12ml / h Drop into the solution 2, and then react for 5 hours after the dropwise addition, using this The method prepared uniformly dispersed SiO with an average particle size of about 1.3 μm 2 The microspheres are ready for use; take 1.5g PA6 slices (181110-500G, Sigma-Aldrich (Shanghai) Trading Co., Ltd.) and dissolve them in 8.5g formic acid (analytical pure AR 500ml, 98%, Sinopharm Chemical Reagent Co., Ltd.), Stir evenly to completely dissolve PA6 to obtain 15% PA6 solution, then weigh 0.15g of SiO prepare...

Embodiment 2

[0040] 0.45g SiO 2 The microspheres were added to the PA6 solution to obtain SiO 2 Dosage is the mixed dispersion liquid of 30%, all the other are identical with embodiment 1, obtain PA6 / SiO 2 The radiative cooling fiber membrane is ready for use, with a thickness of 20 μm.

[0041] The radiant refrigeration fiber membrane obtained above is placed in such as figure 2 The radiation cooling test is carried out in the temperature measuring device shown, and the ambient temperature outside the device and the temperature on the top, bottom and side of the sample film are measured simultaneously with a thermocouple, and the temperature drop curve changing with time is obtained as follows: Figure 4 shown. from Figure 4 It can be seen that the above-mentioned fiber membrane is at an average of about 80W / m 2 Under the sun's rays, the temperature of the surface of the object close to the fiber membrane is about 1.2°C lower than the ambient temperature outside the device, which i...

Embodiment 3

[0043] Weigh 2.1g PA6 slices and dissolve them in 7.9g formic acid solution, stir evenly to completely dissolve PA6 to obtain 21% PA6 solution, then weigh 0.42g SiO 2 The microspheres were added to the PA6 solution, stirred by magnetic force for 4h, so that the SiO 2 The microspheres are uniformly dispersed in it to obtain SiO 2 Dosage is 20% mixed dispersion liquid standby, all the other are identical with embodiment 1, obtain PA6 / SiO 2 The radiative cooling fiber membrane is ready for use, with a thickness of 20 μm.

[0044] The radiant refrigeration fiber membrane obtained above is placed in such as figure 2 The radiation cooling test is carried out in the temperature measuring device shown, and the ambient temperature outside the device and the temperature on the top, bottom and side of the sample film are measured simultaneously with a thermocouple, and the temperature drop curve changing with time is obtained as follows: Figure 5 shown. from Figure 5 It can be se...

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Abstract

The invention relates to a radiation refrigeration fiber membrane and a preparation method and application thereof. The fiber membrane comprises polymer fibers and radiation particles with high mono-dispersity, wherein the radiation particles with the high mono-dispersity are randomly dispersed among the polymer fibers. The preparation method comprises the steps of uniformly dispersing the radiation particles with the high mono-dispersity in a polymer solution and performing electrostatic spinning. The fiber membrane is simple in structure, has a great radiation refrigeration effect and can beused for cooling the human body.

Description

technical field [0001] The invention belongs to the field of radiation refrigeration materials and their preparation and application, and in particular relates to a radiation refrigeration fiber membrane and its preparation method and application. Background technique [0002] Radiation cooling technology uses materials with very significant infrared emission characteristics in the mid-infrared band (especially in the 8-13 μm band) to form heat with an absolute cold source in outer space through an atmospheric transparent window (the transmittance for the 8-13 μm band is almost 0). Exchange, so as to achieve cooling and cooling. Radiation refrigeration can achieve the purpose of cooling without consuming other energy sources, which can effectively reduce the use of air conditioners and power consumption, and help reduce the emission of polluting gases. In recent years, radiative cooling has become a hot research direction. [0003] However, there are still limited examples...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/413D04H1/4334D04H1/4291D04H1/4282D01F6/46D01F6/52D01F6/48D01F6/90D01F1/10
CPCD01F1/10D01F6/46D01F6/48D01F6/52D01F6/90D04H1/413D04H1/4282D04H1/4291D04H1/4334D04H1/4382
Inventor 王宏志肖润财侯成义李耀刚张青红
Owner DONGHUA UNIV
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