CN112021687A - Radiation refrigeration protective clothing and preparation method thereof - Google Patents
Radiation refrigeration protective clothing and preparation method thereof Download PDFInfo
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- CN112021687A CN112021687A CN202010975868.9A CN202010975868A CN112021687A CN 112021687 A CN112021687 A CN 112021687A CN 202010975868 A CN202010975868 A CN 202010975868A CN 112021687 A CN112021687 A CN 112021687A
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- 230000001681 protective effect Effects 0.000 title claims abstract description 103
- 230000005855 radiation Effects 0.000 title claims abstract description 69
- 238000005057 refrigeration Methods 0.000 title abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000012528 membrane Substances 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 18
- 239000011810 insulating material Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000001523 electrospinning Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims 4
- 238000009413 insulation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 20
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000036541 health Effects 0.000 abstract description 3
- 238000002310 reflectometry Methods 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 8
- 210000004243 sweat Anatomy 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000004060 metabolic process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 206010019345 Heat stroke Diseases 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- 230000037323 metabolic rate Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000008279 sol Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003930 cognitive ability Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009894 physiological stress Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 230000028016 temperature homeostasis Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
- A41D13/0053—Cooled garments
- A41D13/0056—Cooled garments using evaporative effect
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
- A41D31/102—Waterproof and breathable
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention discloses a radiation refrigeration protective clothing and a preparation method thereof, aiming at solving the technical problems that the comfort is poor when an operator wears a closed protective clothing without a refrigeration system to work, and the protective clothing of the refrigeration system is heavy and inconvenient to move, so that the working efficiency of the operator is reduced, and even the life health of the operator is influenced; the protective clothing comprises a protective clothing body, wherein a fiber membrane with nano-scale micropores is embedded on the outer surface of the protective clothing body, silicon dioxide particles are attached to the tissue structure on the fiber membrane, and a transparent waterproof heat-insulating layer which is transparent, waterproof and is made of heat-insulating materials is attached to the outer surface of the fiber membrane. The radiation refrigeration technology and the protective clothing are combined, so that the protective clothing realizes the refrigeration effect under the conditions that other refrigeration equipment is not additionally added and the softness of the existing protective clothing body is not changed, the convenience and the working efficiency of operators wearing the protective clothing during working are ensured, and the comfort of the operators is improved.
Description
Technical Field
The invention belongs to the field of protective articles, and particularly belongs to radiation refrigeration protective clothing and a preparation method thereof.
Background
The environment which can cause the human body to be overheated due to the comprehensive influence of air temperature, air humidity and air flow is called as a thermal environment; in working environment, the air temperature is above 32 deg.C, the temperature in hot region is above 35 deg.C, or the air temperature is above 30 deg.C, the relative humidity is above 80%, or the radiant heat intensity is above 4.1841J (1cal)/cm2Min, or heat dissipation from heat sources present due to poor ventilation, exceeding 83.7KJ/m2Min, both belong to the high temperature operation category. When working at high temperature, the strong muscle activity generates a large amount of heat, and the heat balance of the human body can be maintained only by enhancing the heat dissipation; however, the hot external environment makes the body difficult to dissipate heat, and even forces to accept a large amount of external heat, thereby causing a series of physiological stress reactions, mainly manifested as changes in thermoregulation, water and salt metabolism, cardiovascular system, digestive system and the like. In a high-temperature environment, people can sweat and the body temperature rises, so that discomfort or annoyance caused by the sweating can cause behavioral effects and influence the cognitive ability of people, such as mental labor, information processing, memory and the like.
In order to improve the comfort of medical and other protective personnel wearing the closed protective clothing during work
However, aiming at the protection of medical prevention and treatment and other operation sites, most of the existing protective clothing on the market only considers the action factors of isolating viruses, chemicals and other injuring human bodies, and neglects the comfort of operators wearing the closed protective clothing during working, thereby reducing the working efficiency of the operators and even influencing the life health of the operators; in addition, although a small part of protective clothing is provided with a refrigerating system, so that the cooling effect can be achieved, the refrigerating system is overstaffed, related components are heavy, the weight of the protective clothing is increased, operators cannot conveniently move when wearing the protective clothing, the working efficiency is low, and the protective clothing is not widely adopted in the field of protective articles.
Disclosure of Invention
(1) Technical problem to be solved
Aiming at the defects of the prior art, the invention aims to provide a radiation refrigeration protective clothing and a preparation method thereof, aiming at solving the technical problems that the comfort is poor when the existing operator wears a closed protective clothing without a refrigeration system to work, and the protective clothing of the refrigeration system is heavy and inconvenient to move, so that the working efficiency of the operator is reduced, and even the life health of the operator is influenced; the protective clothing and the preparation method thereof combine the radiation refrigeration technology with the protective clothing, so that the protective clothing realizes the refrigeration effect under the conditions of not additionally adding other refrigeration equipment and not changing the flexibility of the existing protective clothing body, the convenience and the working efficiency of operators wearing the protective clothing during working are ensured, and the comfort of the operators is improved.
(2) Technical scheme
In order to solve the technical problem, the invention provides the radiation refrigeration protective clothing which comprises a protective clothing body, wherein a fiber membrane with nanometer-scale micropores is embedded in the outer surface of the protective clothing body, silicon dioxide particles are attached to the tissue structure of the fiber membrane, and a transparent waterproof heat-insulating layer which is transparent, waterproof and made of heat-insulating materials is attached to the outer surface of the fiber membrane.
The protective clothing body is common protective clothing in various fields at present, namely the material and the structure of the existing protective clothing. The silica particles attached to the tissue structure on the fiber membrane are used for reflecting solar radiation, and the temperature in the protective clothing is reduced to be lower than the ambient temperature through long-wave radiation heat exchange. Aiming at the transparent waterproof heat-insulating layer which is transparent and waterproof and is made of heat-insulating materials, firstly, the permeability of the film can be weakened by reducing the absorption of silicon dioxide in the film to moisture in the air, the radiation intensity is weakened, the comfort level is reduced, secondly, the blackness of the materials of the protective clothing can be reduced, the absorption of internal heat is reduced, the heat emitted from the interior can be directly radiated to the atmosphere through an atmospheric window, the radiation and heat dissipation effects are obvious, and the refrigeration effect is excellent; wherein, better, the transparent waterproof heat-insulating layer realizes the higher transmission capacity to the far infrared band (8-13 μm).
Preferably, the transparent waterproof heat-insulating layer is a polyethylene film; the polyethylene film can realize excellent heat preservation effect and has better transparency and waterproof property.
Preferably, the particle size of the silica particles is 4 μm, the total thickness of the silica particles attached to the fibrous membrane and the tissue structure thereof is 200 μm, and the volume fraction of the silica particles in the whole of the silica particles attached to the fibrous membrane and the tissue structure thereof is controlled to be 12%; under the condition, the infrared emissivity can reach 0.93, and the optimal reflectivity of the reflectivity in the sunlight wave band reaches 0.92.
Preferably, the fiber film, the silicon dioxide particles and the transparent waterproof heat-insulating layer are applied to partial or whole part of the protective clothing body; therefore, the protective clothing can be divided into local high-temperature protective clothing and whole-body high-temperature protective clothing so as to adapt to the heat dissipation requirements of specific positions or all positions.
The basic metabolism and heat dissipation requirements of a human body are considered, different protective clothing can be selected under different requirements according to the importance of the proportion of the metabolic rate of different parts to the total metabolic rate of the whole body, the protective clothing can be divided into local high-temperature protective clothing and whole-body high-temperature protective clothing according to different heat dissipation requirements of the human body to the protective clothing, so that the protective clothing can be suitable for places with different use requirements, and the relationship among the basic metabolism, the basic blood flow and the heat capacity of different parts of the body and the percentage occupied by the body is as shown in the following table 1.
TABLE 1 values of basal metabolism, basal blood flow and heat capacity in different parts of the body and the percentage of the body
The radiation refrigeration effect is a passive cooling technology for obtaining refrigeration effect by performing radiation heat exchange between an object on the ground and an outer space with extremely low temperature through an atmospheric window so as to reduce the surface temperature to be lower than the ambient temperature; the radiation refrigeration material has higher solar radiation reflectivity alpha of more than or equal to 0.9 and higher thermal radiation emissivity of more than or equal to 0.9.
The technical scheme provides the design of the specific distribution area of the structure and the components of the protective clothing and the distribution gap amount of the coating based on the dissipation of metabolic heat, latent sweat and apparent sweat of a human body, utilizes the outer space with extremely low temperature, and reduces the surface temperature of the protective clothing to be below the environmental temperature through special materials, thereby eliminating the problem that the prior refrigerating protective clothing is heavy and inconvenient to move, improving the comfort degree of the wearer, reducing the heatstroke risk, simultaneously not changing the flexibility of the prior protective clothing, and being beneficial to the operator to implement operation.
Data verification is carried out on the final effects of solar radiant heat absorbed by a human body, radiation heat exchange between the human body and the environment, convection heat exchange between the human body and the environment and net radiation heat exchange between the human body and the sky.
Solar radiant heat absorbed by human body
The solar radiation energy is mainly rays with the wavelength of 0.32-2.5 μm, and the surface coating has the reflectivity of more than 0.9 (0.97) in the short wave band (solar radiation) of 0.2-2.2 μm.
The solar radiant heat absorbed by the human body is calculated as follows:
qsol＝afclfeffI
wherein:
qsolabsorbed solar radiant heat, W/m2；
a-solar radiation absorption coefficient;
fcl-the area factor of the garment, 1.26;
feff-taking the effective radiation area correction factor to be 0.72;
i-intensity of solar radiation, W/m2。
Radiation heat exchange between human body and environment
The wavelength of the emitted radiation energy is generally more than 2 mu m on the surface with the temperature below 600K, so that most surfaces only emit long-wave radiation in the general building environment; the temperature of the surface and the surface of the human body are basically in the same magnitude, the surface of the human body and the environment can be considered as ash bodies in the long-wave radiation range, and the emissivity of the surface coating in the atmospheric window of 8-13 mu m wave band is above 0.9 (0.96).
The heat exchange quantity of the human body and the external long-wave radiation is calculated according to the following formula:
wherein:
qlwthe amount of heat exchange by radiation of the human being with the environment, W/m2；
Emissivity of long wavelength radiation;
fcl-the area factor of the garment, 1.26;
feff-taking the effective radiation area correction factor to be 0.72;
sigma-Stefin Boltzmann constant, 5.67X 10-8W/(m2·K4)；
Tcl-temperature of the human body surface, K;
Tr-the average radiation temperature of the environment, K.
Convection heat exchange between human body and ambient environment
qconv＝hc(Tdb-Tcl)
Wherein:
qconv-amount of convective heat transfer between human body and environment, W/m2；
hc-coefficient of convective heat transfer, W/(m), of garment surface2·K)；
Tdb-air temperature, K;
Tcl-garment surface temperature, K.
Net radiative heat exchange between human body and sky
qnlwr＝σTcl 4-σTsky 4
Wherein:
qnlwr-net radiant heat exchange of the human body with the sky, W/m 2;
emissivity of long wavelength radiation;
sigma-Stefin Boltzmann constant, 5.67X 10-8W/(m2·K4)；
Tcl-garment surface temperature, K;
Tsky-the sky temperature, K;
the protective garment has an average IR emissivity of>0.96, solar radiation reflectivity as high as 0.97, according to the law of conservation of energy, combined with the above analysis, it can be concluded that: the solar intensity at the peak is 1000W/m2In the case of (2), the protective surface temperature is reduced by 3 ℃ compared to the outdoor air.
As can be seen from the thermodynamic principles, heat is transferred in the form of radiation as long as there is a temperature difference between the two objects until the temperatures of the two objects tend to be identical. The temperature of the space outside the earth atmosphere is close to absolute 0 ℃, the space outside the earth can be regarded as a cold source, and heat is emitted to the outer space in the form of electromagnetic waves, so that the purposes of cooling and heat dissipation can be achieved without energy consumption.
Scientific research on the spectral transmission characteristics of the atmosphere by scientists finds that the atmosphere has an atmospheric window, namely certain wavelength bands with higher transmission can almost freely penetrate the atmosphere and are not blocked to return to the ground. The electromagnetic wave with the wavelength of 8-13 mu m is available in our daily research, and the radiation wavelength of the black body at normal temperature is concentrated in this interval, which means that we can radiate heat to the outer space through the atmospheric window with the wavelength of 8-13 mu m and take away the heat on our ground.
The working principle of the radiation refrigeration protective clothing of the invention is as follows: mainly lies in radiation refrigeration, namely, the heat energy on the protective clothing is emitted out in the form of 8-13um electromagnetic wave through radiation heat exchange, passes through the atmosphere and releases heat to the outer space low-temperature cold source; meanwhile, the absorption of solar radiation heat is reduced through high solar radiation reflectivity, so that the aim of cooling is fulfilled. When the human body sweats to dissipate heat, the heat is transferred to the fiber membrane through the inner layer of the protective clothing body, at the moment, the silicon dioxide particles are almost equal to a black body, the silicon dioxide particles emit the heat to an outer space cold source through electromagnetic waves of 8-13 mu m to take away the heat energy of the human body, the radiation refrigeration effect is obtained, and the space in the protective clothing is equal to a refrigeration space.
The invention also provides a preparation method of the radiation refrigeration protective clothing, which comprises the following specific steps: firstly, preparing a fiber membrane with nano-scale micropores, attaching silicon dioxide particles to the organizational structure of the fiber membrane to form a radiation cooling film, then attaching a transparent waterproof heat-insulating layer which is transparent, waterproof and is made of heat-insulating materials to the outer surface of the radiation cooling film to form a flexible composite membrane, and finally embedding the flexible composite membrane into the outer surface of a protective clothing body.
Preferably, the fibrous membrane having nano-scale micro-pores is prepared by an electrospinning method.
Preferably, the radiation cooling film is formed by depositing silica particles into the tissue structure of the fibrous membrane by emulsion precipitation.
(3) Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the invention combines the radiation refrigeration technology and the protective clothing in a breakthrough way, so that the protective clothing passively and continuously realizes the effect of radiation refrigeration without adding other refrigeration equipment, consumes no energy, and greatly realizes energy conservation and environmental protection; simultaneously, utilize fibre membrane, silica particle and the respective nature of transparent waterproof heat preservation and the mutual adnexed characteristic of three, realize the effect of refrigeration under the prerequisite that does not change current protective clothing body compliance, it is few in the weight attached on the protective clothing body to guaranteed convenience and the work efficiency of operating personnel when wearing protective clothing work, and improved staff's travelling comfort, be favorable to the staff to carry out the operation.
In addition, the preparation method of the protective clothing is simple, does not need precise production instruments, is suitable for mass production, and has strong applicability and practicability.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood and obvious, the technical scheme in the embodiment of the invention is clearly and completely described below to further illustrate the invention, and obviously, the embodiment described is only a part of the embodiment of the invention, but not a whole pattern.
The embodiment is radiation refrigeration protective clothing, and the production process of the radiation refrigeration protective clothing comprises the following steps:
firstly, preparing fibers with nanometer micropores by an electrostatic spinning method, depositing and attaching silicon dioxide particles to the organizational structure of a fiber membrane by an emulsion deposition method to form a radiation cooling film, then attaching a polyethylene film which is transparent, waterproof and is made of a heat insulation material to the outer surface of the radiation cooling film to form a flexible composite membrane, and finally embedding the flexible composite membrane into the outer surface of a protective clothing body.
Wherein the particle size of the silicon dioxide particles is controlled to be 4 μm, the total thickness of the silicon dioxide particles attached to the fibrous membrane and the tissue structure thereof is controlled to be 200 μm, and the volume fraction of the silicon dioxide particles in the whole of the silicon dioxide particles attached to the fibrous membrane and the tissue structure thereof is controlled to be 12%; under the condition, the infrared emissivity can reach 0.93, and the optimal reflectivity of the reflectivity in a sunlight wave band reaches 0.92.
The structure of the radiation refrigeration protective clothing comprises a protective clothing body, wherein a fiber membrane with nano-scale micropores is embedded in the outer surface of the protective clothing body, silicon dioxide particles are attached to the organization structure on the fiber membrane, and a polyethylene film which is transparent, waterproof and is made of heat insulation materials is attached to the outer surface of the fiber membrane; meanwhile, a fiber film, silicon dioxide particles and a polyethylene film can be applied to the local part or the whole part of the protective clothing body; therefore, the protective clothing can be divided into local high-temperature protective clothing and whole-body high-temperature protective clothing so as to adapt to the heat dissipation requirements of specific positions or all positions.
The radiation refrigeration effect is a passive cooling technology for obtaining refrigeration effect by performing radiation heat exchange between an object on the ground and an outer space with extremely low temperature through an atmospheric window so as to reduce the surface temperature to be lower than the ambient temperature; the radiation refrigeration material has higher solar radiation reflectivity alpha of more than or equal to 0.9 and higher thermal radiation emissivity of more than or equal to 0.9.
The technical scheme provides the design of the specific distribution area of the structure and the components of the protective clothing and the distribution gap amount of the coating based on the dissipation of metabolic heat, latent sweat and apparent sweat of a human body, utilizes the outer space with extremely low temperature, and reduces the surface temperature of the protective clothing to be below the environmental temperature through special materials, thereby eliminating the problem that the prior refrigerating protective clothing is heavy and inconvenient to move, improving the comfort degree of the wearer, reducing the heatstroke risk, simultaneously not changing the flexibility of the prior protective clothing, and being beneficial to the operator to implement operation.
The radiation refrigeration protective clothing of the technical scheme transmits heat energy on the protective clothing in the form of 8-13um electromagnetic waves through a radiation heat exchange mode, penetrates through an atmosphere layer, and releases heat to an outer space low-temperature cold source, so that the purpose of cooling is achieved. When the human body sweats to dissipate heat, the heat is transferred to the fiber membrane through the inner layer of the protective clothing body, the silicon dioxide particles are almost equal to a black body, the silicon dioxide particles emit the heat to an external space cold source through 8-13um electromagnetic waves, the heat energy of the human body is taken away, the radiation cooling effect is obtained, and the space in the protective clothing is equivalent to a cooling space.
The protective garment has an average infrared emissivity of>0.96, the solar radiation reflectivity is up to 0.97, and the average radiation cooling power of the protective clothing is 52.8W/m under certain climatic conditions through statistical calculation2At peak solar intensity of 1000W/m2In the case of (2), the protective surface temperature is reduced by 3 ℃ compared to the outdoor air. The temperature difference between the refrigerating space temperature in the daytime and the ambient environment can reach 4.3 ℃, the effect is more obvious at night, and the temperature difference between the refrigerating space temperature and the ambient environment can reach 12 ℃.
The protective clothing of the technical scheme combines the radiation refrigeration technology with the protective clothing, so that the protective clothing realizes the refrigeration effect under the conditions that other refrigeration equipment is not additionally added and the softness of the existing protective clothing body is not changed, the convenience and the working efficiency of operators wearing the protective clothing during working are ensured, and the comfort of the operators is improved.
Having thus described the principal technical features and basic principles of the invention, and the advantages associated therewith, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other embodiments without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the embodiments is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
Claims (7)
1. The protective clothing comprises a protective clothing body and is characterized in that a fiber membrane with nano-scale micropores is embedded in the outer surface of the protective clothing body, silicon dioxide particles are attached to the tissue structure on the fiber membrane, and a transparent waterproof heat-insulating layer which is transparent, waterproof and is made of heat-insulating materials is attached to the outer surface of the fiber membrane.
2. A protective garment as claimed in claim 1 characterised in that said transparent waterproof insulating layer is a polyethylene film.
3. The protective garment as claimed in claim 1, wherein the silica fine particles have a particle size of 4 μm, the total thickness of the silica fine particles adhered to the fibrous membrane and the texture thereof is 200 μm, and the volume fraction of the silica fine particles in the whole of the silica fine particles adhered to the fibrous membrane and the texture thereof is controlled to be 12%.
4. A radiant cooling protective garment as claimed in claim 1 wherein said fibrous membrane, silica particles and transparent waterproof insulation are applied to part or all of said garment body.
5. A method of manufacturing a protective garment cooled by radiation, the method being used to manufacture a protective garment cooled by radiation according to any one of claims 1 to 4, the method comprising the steps of: firstly, preparing a fiber membrane with nano-scale micropores, attaching silicon dioxide particles to the organizational structure of the fiber membrane to form a radiation cooling film, then attaching a transparent waterproof heat-insulating layer which is transparent, waterproof and is made of heat-insulating materials to the outer surface of the radiation cooling film to form a flexible composite membrane, and finally embedding the flexible composite membrane into the outer surface of a protective clothing body.
6. The method of claim 5, wherein the fiber membrane having nano-scale micro-pores is prepared by electrospinning.
7. The method of claim 5, wherein the radiation-cooled protective garment is formed by depositing silica particles into the weave of the fibrous membrane by emulsion precipitation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113997673A (en) * | 2021-11-23 | 2022-02-01 | 深圳市碧洁新能源科技有限公司 | Breathable cooling woven fabric and preparation method thereof |
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