阅读说明：本技术 一种辐射冷却抗菌面料及其制备方法 (Radiation cooling antibacterial fabric and preparation method thereof ) 是由 唐少春 张�荣 申煜椿 张晟 于 2021-02-03 设计创作，主要内容包括：本发明公开了一种辐射冷却抗菌面料,从内到外依次包括织物面料层、Al膜层和辐射涂层,其制备步骤依次为：蒸发镀金属铝、配制辐射涂层液、涂覆、通风吹干。本发明的辐射冷却抗菌面料中的纳米二氧化硅微球不断向大气中辐射净热量,使面料自身温度不断降低；纳米碳化硅微球可以加快辐射速率；丙烯酸树脂可提高面料的抑菌和透气性能；本发明通过各原料的协同作用,在达到降温效果的同时,还具有抑菌、防紫外线辐射的功能,可应用于户外工作人员高温作业的防护服。(The invention discloses a radiation cooling antibacterial fabric, which sequentially comprises a fabric layer, an Al film layer and a radiation coating from inside to outside, and the preparation steps are as follows: evaporating metal aluminum, preparing radiation coating liquid, coating, and blow-drying. The nano silicon dioxide microspheres in the radiation cooling antibacterial fabric continuously radiate net heat to the atmosphere, so that the temperature of the fabric is continuously reduced; the nano silicon carbide microspheres can accelerate the radiation rate; the acrylic resin can improve the antibacterial and air permeability of the fabric; the invention achieves the cooling effect through the synergistic effect of the raw materials, has the functions of bacteriostasis and ultraviolet radiation prevention, and can be applied to protective clothing for high-temperature operation of outdoor workers.)

1. The radiation cooling antibacterial fabric is characterized by sequentially comprising a fabric layer, an Al film layer and a radiation coating from inside to outside.

2. The radiation cooling antibacterial fabric according to claim 1, characterized in that the fabric layer is nylon, terylene, all cotton or cotton-polyester blended fabric.

3. A preparation method of a radiation cooling antibacterial fabric is characterized by comprising the following steps:

s1 evaporation aluminum plating: placing the fabric layer into a vacuum evaporation box for aluminum plating, and depositing an aluminum film with the thickness of 0.5-1.0 mu m on the surface of the fabric layer;

s2 preparation of radiation coating liquid: weighing 4-8 parts of polyvinyl butyral, 2-6 parts of dibutyl sebacate, 10-14 parts of acrylic resin, 6-10 parts of ethyl acetate, 1-2 parts of cellulose acetate, 6-8 parts of nano silicon dioxide microspheres, 1-2 parts of nano silicon carbide microspheres and 20-30 parts of ethanol according to parts by weight, heating, dissolving, uniformly stirring after dissolving, and sealing and preserving the temperature by 80 ℃ after uniformly stirring;

s3 coating: coating the radiation coating liquid on the outer layer of the blended fabric by adopting a scraper, and controlling the thickness of the coating liquid to be 0.5-1.0 mm;

s4, ventilation drying: and (4) ventilating and drying the fabric to obtain the radiation cooling antibacterial fabric.

4. The method for preparing radiation cooling antibacterial fabric according to claim 3, wherein the degree of vacuum pumping in step S1 reaches 5 x 10^-3When Pa is needed, the evaporation boat is heated to 1200-1300 ℃, then the aluminum wire with the purity of 99.99 percent is continuously sent to the evaporation boat, and the working vacuum is controlled to be 8 multiplied by 10^-3Pa, the source base distance is 20cm, the working temperature of a cooling system is 10-25 ℃, the aluminum feeding speed is 0.8-1.2 m/min, and the fabric rolling speed is 20-30 m/min.

5. The preparation method of the radiation cooling antibacterial fabric according to claim 3, wherein the particle size of the nano silicon dioxide microspheres and the nano silicon carbide microspheres in the step S2 is 60-80 μm.

Technical Field

The invention relates to the technical field of textile fabrics, in particular to a radiation cooling antibacterial fabric and a preparation method thereof.

Background

The radiation cooling mode is a passive and energy-consumption-free novel refrigeration mode, and radiates the heat of objects on the earth to a huge cold source of outer space through heat radiation. Thermal radiation is a phenomenon that any object with temperature radiates electromagnetic waves, and the higher the temperature of the object is, the greater the total energy radiated is, and the larger the proportion of radiation in a short wave band is. The atmosphere layer between the earth surface and the outer space contains mixed gas of oxygen, nitrogen and the like, has low transmittance, but has high transparency for an atmospheric window in a wave band range of 8-13 mu m. The object on the earth can radiate heat from the atmospheric window to the outer space in a radiation cooling mode, and the purpose of reducing the temperature without energy input is achieved.

When the outdoor worker works at high temperature, the outdoor worker is subjected to continuous heat stress, and the heat stress is a general term of a series of reactions generated by the heat stress when the body is exposed to heat. After continuous heat stress, workers can show the phenomena of physical and mental fatigue, thought disorder, stress and anxiety, reduction of comprehension ability and operation ability and the like, the working efficiency is reduced, and even heatstroke is serious. At present, an individual protection means such as wearing a cooling garment is generally adopted to deal with heat stress, but under the irradiation of strong sunlight, ultraviolet rays can penetrate through the cooling garment to cause damage to the skin of outdoor high-temperature workers. Therefore, the research and development of the radiation cooling antibacterial fabric is a technical problem to be solved urgently at present.

Disclosure of Invention

The invention aims to provide a radiation cooling antibacterial fabric and a preparation method thereof, which have the functions of bacteriostasis and ultraviolet radiation prevention while achieving the effect of cooling, and can be widely applied to protective clothing for high-temperature operation of outdoor workers.

In order to achieve the purpose, the invention provides the following technical scheme:

the embodiment of the application discloses radiation cooling antibacterial fabric, which sequentially comprises a fabric layer, an aluminum film layer and a radiation coating from inside to outside.

Further, the fabric layer is nylon, terylene, all cotton or cotton-polyester blended fabric.

The preparation method of the radiation cooling antibacterial fabric comprises the following steps:

s1 evaporation aluminum plating: placing the fabric layer into a vacuum evaporation box for aluminum plating, and depositing an aluminum film with the thickness of 0.5-1.0 mu m on the surface of the fabric layer;

s2 preparation of radiation coating liquid: weighing 4-8 parts of polyvinyl butyral, 2-6 parts of dibutyl sebacate, 10-14 parts of acrylic resin, 6-10 parts of ethyl acetate, 1-2 parts of cellulose acetate, 6-8 parts of nano silicon dioxide microspheres, 1-2 parts of nano silicon carbide microspheres and 20-30 parts of ethanol according to parts by weight, heating, dissolving, uniformly stirring after dissolving, and sealing and preserving the temperature by 80 ℃ after uniformly stirring;

s3 coating: coating the radiation coating liquid on the outer layer of the blended fabric by a scraper, and controlling the thickness of the coating liquid to be 0.5-1.0 mm;

s4, ventilation drying: and (4) ventilating and drying the fabric to prepare the radiation cooling antibacterial fabric.

Further, in step S1, the degree of vacuum pumping reaches 5 × 10^-3When Pa is needed, the evaporation boat is heated to 1200-1300 ℃, then the aluminum wire with the purity of 99.99 percent is continuously sent to the evaporation boat, and the working vacuum is controlled to be 8 multiplied by 10^-3Pa, the source base distance is 20cm, the working temperature of a cooling system is 10-25 ℃, the aluminum feeding speed is 0.8-1.2 m/min, and the fabric rolling speed is 20-30 m/min.

Further, in the step S2, the particle size of the nano silicon dioxide microspheres and the nano silicon carbide microspheres is 60-80 μm.

Compared with the prior art, the invention has the advantages that: the nano silicon dioxide microspheres in the radiation cooling antibacterial fabric continuously radiate net heat to the atmosphere, so that the temperature of the fabric is continuously reduced; the nano silicon carbide microspheres can accelerate the radiation rate; the acrylic resin can improve the antibacterial and air permeability of the fabric; the invention achieves the cooling effect through the synergistic effect of the raw materials, has the functions of bacteriostasis and ultraviolet radiation prevention, and can be applied to protective clothing for high-temperature operation of outdoor workers.

Detailed Description

Technical solutions in the embodiments of the present invention will be described in detail below, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

The fabric layer is made of nylon fabric.

S1 evaporation aluminum plating: putting the nylon fabric layer into a vacuum evaporation box for aluminizing, and depositing an aluminum film with the thickness of 0.8 mu m on the surface of the fabric layer;

s2 preparation of radiation coating liquid: weighing 7 parts of polyvinyl butyral, 5 parts of dibutyl sebacate, 12 parts of acrylic resin, 9 parts of ethyl acetate, 1.5 parts of cellulose acetate, 8 parts of nano silicon dioxide microspheres, 1.5 parts of nano silicon carbide microspheres and 25 parts of ethanol according to parts by weight, heating, dissolving, uniformly stirring, sealing and preserving heat by 80 ℃ after uniformly stirring;

s3 coating: coating the radiation coating liquid on the outer layer of the blended fabric by a scraper, and controlling the thickness of the coating liquid to be 0.8 mm;

s4, ventilation drying: and (4) ventilating and drying the fabric to prepare the radiation cooling antibacterial nylon fabric.

Example 2

The fabric layer is made of polyester fabric.

S1 evaporation aluminum plating: putting the terylene fabric layer into a vacuum evaporation box for aluminizing, and depositing an aluminum film with the thickness of 0.6 mu m on the surface of the fabric layer;

s2 preparation of radiation coating liquid: weighing 8 parts of polyvinyl butyral, 4 parts of dibutyl sebacate, 13 parts of acrylic resin, 8 parts of ethyl acetate, 1.8 parts of cellulose acetate, 7.5 parts of nano silicon dioxide microspheres, 1.8 parts of nano silicon carbide microspheres and 24 parts of ethanol according to parts by weight, heating, dissolving, uniformly stirring, sealing and preserving heat by 80 ℃;

s3 coating: coating the radiation coating liquid on the outer layer of the blended fabric by a scraper, and controlling the thickness of the coating liquid to be 0.7 mm;

s4, ventilation drying: and (4) ventilating and drying the fabric to prepare the radiation cooling antibacterial polyester fabric.

Example 3

The fabric layer is made of cotton-polyester blended fabric.

S1 evaporation aluminum plating: putting the cotton-polyester blended fabric layer into a vacuum evaporation box for aluminizing, and depositing an Al film with the thickness of 0.7 mu m on the surface of the fabric layer;

s2 preparation of radiation coating liquid: weighing 6 parts of polyvinyl butyral, 6 parts of dibutyl sebacate, 11 parts of acrylic resin, 9 parts of ethyl acetate, 1.3 parts of cellulose acetate, 7.2 parts of nano silicon dioxide microspheres, 1.4 parts of nano silicon carbide microspheres and 26 parts of ethanol according to parts by weight, heating, dissolving, uniformly stirring, sealing and preserving heat by 80 ℃;

s3 coating: coating the radiation coating liquid on the outer layer of the blended fabric by a scraper, and controlling the thickness of the coating liquid to be 0.6 mm;

s4, ventilation drying: and (4) ventilating and drying the fabric to prepare the radiation cooling antibacterial cotton-polyester blended fabric.

The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.