阅读说明：本技术 一种用于个人热管理的抗油渍可穿戴制冷基础材料及其制备方法 (Oil stain resistant wearable refrigeration base material for personal heat management and preparation method thereof ) 是由 王群 张恒洋 卢松涛 吴晓宏 李杨 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种用于个人热管理的抗油渍可穿戴制冷基础材料及其制备方法,属于个人热管理领域。本发明要解决传统面料仅通过汗液蒸发降温的缺点。本发明是将纳米氧化锌研磨后与氟碳表面活性剂和有机溶剂混匀,然后喷涂在透气性纤维面料表面,再晾干制成的。本发明协同了太阳高反射率、高散热率等性能,更好的进行人体表面降温,本发明产品降温性能良好,可实现比环境温度低4.9℃的效应。(The invention discloses an oil stain resistant wearable refrigeration base material for personal heat management and a preparation method thereof, and belongs to the field of personal heat management. The invention aims to solve the defect that the traditional fabric is cooled only by sweat evaporation. The invention is prepared by grinding nano zinc oxide, mixing with fluorocarbon surfactant and organic solvent, spraying on the surface of air-permeable fiber fabric, and air drying. The invention has the advantages of high solar reflectivity, high heat dissipation rate and the like, better cooling of the surface of a human body, good cooling performance of the product and realization of the effect of being 4.9 ℃ lower than the ambient temperature.)

1. An oil stain resistant wearable refrigeration base material for personal heat management is characterized in that the base material is prepared by grinding nano zinc oxide, uniformly mixing with fluorocarbon surfactant and organic solvent, spraying the mixture on the surface of a breathable fiber fabric, and airing, wherein the size of nano ZnO particles on the surface of the fiber fabric is 100-200 nm, and the organic solvent is isopropanol or absolute ethyl alcohol.

2. The base material of claim 1, wherein said breathable fibrous web is a white polyester porous web.

3. The base material according to claim 1, characterized in that the mass fraction of nano zinc oxide is 5% -8%; the mass fraction of the organic solvent is 90-95 percent; the fluorocarbon surfactant FS-50 is mixed according to the proportion that the mass fraction is 0.8-1.0%.

4. The base material according to claim 1, characterized in that the mass fraction of nano zinc oxide is 6%; the mass fraction of the organic solvent is 96 percent; the fluorocarbon surfactant FS-50 with the mass fraction of 1.0 percent is mixed.

5. The base material of claim 1, wherein the nano ZnO particles on the surface of the fiber fabric have a size of 100 nm.

6. The method for preparing the base material according to any one of claims 1 to 4, wherein the preparation method is carried out by the following steps:

grinding the nano ZnO for at least 2h, and then selecting 100-200 nm nano ZnO;

step two, mixing the nano zinc oxide ground in the step one, an organic solvent and a fluorocarbon surfactant, magnetically stirring the mixture to be in a paint shape, and then filling the mixture into a spray gun;

step three, spraying once, and then airing at room temperature;

and step four, repeating the operation of step three for at least 3 times to obtain the base material.

7. The method according to claim 5, wherein the second step is carried out by magnetic stirring at a speed of 1200rpm to 1600 rpm.

8. The method according to claim 5, wherein the second step is performed by magnetic stirring at 1600 rpm.

9. The preparation method according to claim 5, wherein the spraying process parameters are as follows: the spraying height is 20 cm-30 cm, and the pressure of the spray gun is 0.2 MPa-0.4 MPa.

10. The preparation method according to claim 5, wherein the spraying process parameters are as follows: the spraying height is 20cm, and the pressure of the spray gun is 0.2 MPa.

Technical Field

The invention relates to a cellulose textile, in particular to a basic flexible material with high reflection, high heat dissipation and oil stain resistance, belonging to the field of personal heat management.

Background

Greenhouse gas CO generated by industrial development and high energy consumption₂The global warming problem is generated year by year, the average temperature of the earth is gradually raised all the year round, particularly in hot summer, people in outdoor activities suffer from serious heat stress phenomena, further the human health is harmed, the sustainable development of social labor force and social economy is hindered, however, the traditional space centralized cooling technology (compression refrigeration-air conditioning) limits the activity range of people, and the development of the multifunctional basic textile capable of automatically refrigerating and resisting oil stain pollution is a problem which is urgently concerned by people. At present, the traditional method for personal heat management achieves the purpose of cooling through absorbing sweat and evaporating by produced fabric, but the method has certain limitation on the cooling range; and secondly, a human body cooling device similar to air-conditioning compression refrigeration is prepared, but the human body cooling system adopted by the method is complex and generates the problem of power consumption. For example, the self-refrigerating textile fabric used in patent 201810595861.7 is made of multiple layers of materials, and has complex manufacturing method and composition and no good anti-oil stain function. For example, patent 201820892863.8 discloses a wearable human body cooling system, which has a plurality of complicated electronic devices, on one hand, it is a hindrance to the flexibility of human activities, on the other hand, it needs electric power to support, and the generated electromagnetic waves are harmful to human body, so it is a non-environment-friendly human body cooling system. How to develop a multifunctional base material with oil stain resistance, sweat absorption, sweat evaporation (phase change cooling), radiation cooling and the like simply and at low cost is a difficult problem to be solved by researchers and clothing manufacturers.

The prior art has the following defects:

(1) the traditional fabric cools the human body by absorbing sweat, the cooling range is limited, the fabric absorbs the sweat and is easy to saturate, and secondly, most textiles have no performance of resisting oil stain pollution.

(2) The human body of electric power of current researcher development dress cooling system, the constitution of device is complicated on the one hand, has produced certain restriction to people's activity, and on the other hand needs the support of electric power, and neither environmental protection and the electromagnetism that produces cause certain harm to the human body.

Disclosure of Invention

The purpose of the invention is as follows: the preparation method of the oil stain resistant wearing base material for cooling the human body is provided, the flexible fabric prepared by the technology has a simple preparation technology with low energy consumption, the fabric cooling process does not need any electric power support, the surface of the human body can be cooled by the aid of multiple performances of high reflection, high heat dissipation, sweat absorption and evaporation phase change cooling of the material, and the comfortable state of the human body is achieved.

The invention aims to provide a high-permeability wearable base fabric which is free of energy consumption, resistant to oil stain and capable of automatically refrigerating.

The invention aims to provide a preparation method of a high-permeability wearable base fabric which is free of energy consumption, resistant to oil stain and capable of automatically refrigerating.

In order to solve the technical problems, the oil stain resistant wearable refrigeration base material for personal heat management is prepared by grinding nano zinc oxide, uniformly mixing with fluorocarbon surfactant and organic solvent, spraying the mixture on the surface of a breathable fiber fabric, and airing, wherein the size of nano ZnO particles on the surface of the fiber fabric is 100-200 nm, and the organic solvent is isopropanol or absolute ethyl alcohol. The preparation method comprises the following steps:

grinding the nano ZnO for at least 2h, and then selecting 100-200 nm nano ZnO;

step two, mixing the nano zinc oxide ground in the step one, an organic solvent and a fluorocarbon surfactant, magnetically stirring the mixture to be in a paint shape, and then filling the mixture into a spray gun;

step three, spraying once, and then airing;

and step four, repeating the operation of step three for at least 3 times to obtain the base material.

Further limiting, the mass fraction of the nano zinc oxide is 5-8%; the mass fraction of the organic solvent is 90-95 percent; the fluorocarbon surfactant FS-50 is mixed according to the proportion that the mass fraction is 0.8-1.0%.

Further defined, the breathable fiber fabric is a white polyester fiber porous fabric.

Further limiting, in the second step, the magnetic stirring is carried out at the rotating speed of 1200rpm-1600 rpm.

Further defining the technological parameters of spraying in the third step: the spraying height is 20 cm-30 cm, and the pressure of the spray gun is 0.2 MPa-0.4 MPa.

And further limiting, and airing in a room-temperature environment in the third step.

The laboratory scale is carried out according to FIG. 1, and the industrial preparation is carried out according to the apparatus of FIG. 2.

In the invention, semiconductor metal oxide ZnO with wide band gap and large exciton binding energy is adopted as one of the fabric composition materials, and the ZnO has the characteristics of low production cost, greenness, cleanness, excellent photoelectric property, low absorption (200-2500nm) in a visible light-near infrared band solar light band and high emission and heat dissipation performance in a middle infrared transparent band (8-13 mu m). ZnO also has good antibacterial and bacteriostatic effects, and can generate certain bacteriostatic effect on the surface of human body.

The ZnO in the invention constructs a certain rough micro-nano structure on the surface of the fabric, and introduces a hydrophilic Component (COO) on the surface of the ZnO by the synergistic effect of the common fluorocarbon surfactant and the ZnO^-) And the synergistic effect of an oleophobic component (-CF), a rough micro-nano structure and a fluorocarbon surfactant is introduced to the other side of the ZnO surface, so that excellent oil stain pollution resistance is generated on the surface of the material.

The fluorocarbon surfactant has a good effect on reducing the surface energy of the fabric, and in addition, the surfactant can stably exist for a long time under different environments (strong acid and strong base).

The effective components of the fluorocarbon surfactant can be rapidly increased by diluting the fluorocarbon surfactant with isopropanol or ethanol, so that the effect of the surfactant is enhanced.

The air-permeable white fiber fabric commonly used in the market is used as a basic material, the prepared oil stain resistant refrigeration fabric is good in mechanical flexibility, has the advantages of being capable of being cleaned for multiple times, cooperating with sweat evaporation cooling, being capable of adjusting the surface temperature of a human body without any electric power consumption, and being excellent in oil stain pollution resistance, low in price and environment-friendly, efficient in refrigeration, excellent in photoelectric performance and the like.

The invention overcomes the defect that the traditional fabric is cooled only by sweat evaporation. The performance such as high solar reflectivity, high heat dissipation rate and the like is cooperated, and the surface of the human body is cooled better. The maximum reduction temperature was 4.9 ℃. (4.9 ℃ lower than ambient temperature).

The present invention ameliorates the disadvantages of many of today's electrically supported coolable wearable systems. The fabric prepared by the method does not need any energy consumption, and has the advantages of environmental protection and low cost.

The invention overcomes the defect that the prior fabric absorbs oil stains. The fabric prepared by the method has strong oil stain rejection performance, and achieves the effect of being not polluted by oil stains.

Drawings

FIG. 1 is a flow chart for preparing an oil stain resistant refrigeration base fiber fabric;

FIG. 2 is a schematic view of a continuous production device for an oil stain resistant refrigeration base fiber fabric;

FIG. 3(a) is a solar reflectance test of a product obtained by the method of example 1;

FIG. 3(b) is an IR emissivity test of a product obtained by the method of example 1;

FIG. 4 shows a simulated sunlight intensity of 1000 w.m^-2Example 1 a product temperature profile was obtained;

FIG. 5 is an oleophobic test (tested with octadecane oil droplets) of the surface of the product obtained by the method of example 1.

Detailed Description

Example 1: the preparation method of the oil stain resistant wearable refrigeration base material for personal heat management in the embodiment is as follows

(1) And (3) manually grinding the nano ZnO for 2h, and taking 100nm nano ZnO.

(2) Mixing 100nm of nano zinc oxide accounting for 6 wt% of the suspension, 93 wt% of isopropanol and 1 wt% of fluorocarbon surfactant, magnetically stirring at 1600rpm/min for 3h to obtain a paint-like suspension, and filling the suspension into a spray gun.

(3) Then spraying the mixture on a white polyester fiber porous fabric (Suzhou Yuanxin antistatic science and technology limited, polyester fiber 105, 100% terylene, national standard GB), spraying the mixture at a height of 20cm and a spray gun pressure of 0.2Mpa, and airing the mixture at room temperature;

(4) and then repeating the operation of the third step for at least 3 times to finish.

The temperature distribution graph of the fabric with 1000w simulated sunlight intensity of the oil stain-resistant wearable refrigeration base material for personal thermal management prepared by the method of the embodiment is shown in fig. 4, the textile which is not sprayed with the suspension is arranged on the left side of fig. 4, the textile which is sprayed with the suspension is arranged on the right side of fig. 4, and after the textile is irradiated by simulated sun for 1 hour, the temperature of 48.4-43.5-4.9 ℃ is shown, and the product prepared by the embodiment has the cooling effect.

The oil repellency test (testing with octadecane oil drops) of the surface of the oil stain resistant wearable refrigeration base material for personal thermal management prepared by the method is carried out, the test result is shown in fig. 5, the contact angle is more than 150 degrees, and the super-strong oil repellency is realized.