CN116876137A - Graphene fabric with ultraviolet resistance and far infrared function and performance evaluation method thereof - Google Patents

Graphene fabric with ultraviolet resistance and far infrared function and performance evaluation method thereof Download PDF

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Publication number
CN116876137A
CN116876137A CN202311019610.1A CN202311019610A CN116876137A CN 116876137 A CN116876137 A CN 116876137A CN 202311019610 A CN202311019610 A CN 202311019610A CN 116876137 A CN116876137 A CN 116876137A
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far infrared
sample
fabric
ultraviolet
weft
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王宇轩
张红霞
李婉伊
叶彩云
史洋涛
祝成炎
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Zhejiang Sci Tech University ZSTU
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Zhejiang Sci Tech University ZSTU
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
    • G01J5/53—Reference sources, e.g. standard lamps; Black bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/22—Physical properties protective against sunlight or UV radiation

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  • Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Environmental Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Woven Fabrics (AREA)

Abstract

The invention discloses a graphene fabric with ultraviolet and far infrared resistant functions, in particular to a fabric formed by interweaving warp yarns and weft yarns by weft yarn double structures, wherein the warp yarns are common polyester filaments, the weft yarns comprise weft yarns I and weft yarns II, the weft yarns I are graphene polyester filaments, the weft yarns II are common polyester filaments, and a performance evaluation method of the graphene fabric with ultraviolet and far infrared resistant functions is also disclosed. The invention belongs to the technical field of textile fabrics, and particularly provides a graphene fabric with ultraviolet and far infrared resistant functions by taking graphene polyester filaments and polyester as raw materials and a performance evaluation method thereof.

Description

Graphene fabric with ultraviolet resistance and far infrared function and performance evaluation method thereof
Technical Field
The invention belongs to the technical field of textile fabrics, and particularly relates to a graphene fabric with ultraviolet and far infrared resistant functions and a performance evaluation method thereof.
Background
With the increasing level of living of people, the performance requirements of people on textiles are not limited to warmth retention, but are turned to functional textile products with ecological environment protection, fashion and beauty, comfort and intelligence and high added value. And textiles with ultraviolet resistance, far infrared and other functions are popular with people.
In summer and autumn, ultraviolet rays are strong in radiation to human bodies, skin damage is easy to cause, and the temperature difference between day and night is large, so that the human bodies feel uncomfortable, diseases such as cold and fever are easy to cause, and the human health is influenced in a non-variable way. The fabric with ultraviolet resistance and far infrared ray functions can absorb and reflect ultraviolet rays, and can also absorb far infrared rays to raise the temperature of the fabric under the condition of low temperature, so that the problem of local skin cooling is solved, metabolism of a human body is accelerated, and the purposes of keeping warm and protecting health are achieved. Based on the requirements, the development of the garment fabric with the far infrared and ultraviolet protection functions has a certain market prospect, and can meet the needs of people.
Disclosure of Invention
Aiming at the situation, in order to make up the existing defects, the invention provides a graphene fabric with ultraviolet resistance and far infrared resistance by taking graphene polyester filaments and polyester as raw materials and a performance evaluation method thereof.
The invention provides the following technical scheme: the invention provides a graphene fabric with ultraviolet and far infrared resistant functions, in particular to a fabric formed by interweaving warp yarns and weft yarns by weft yarn double weave, wherein the warp yarns are common polyester filaments, the weft yarns comprise weft yarns I and weft yarns II, the weft yarns I are graphene polyester filaments, and the weft yarns II are common polyester filaments.
Further, the weft insertion ratio of the weft yarn I to the weft yarn II is selected from one or more of 0:1, 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, 4:1 and 1:0, and different weft insertion ratios can control the fabric to have different ultraviolet and far infrared resistant functions.
Preferably, the fabric weave is a double weft weave of 8-piece satin and 16-piece satin, the front side of the fabric is colored by 8-piece warp satin and 16-piece weft satin, and the back side of the fabric is colored by 8-piece warp satin and 16-piece weft satin.
Preferably, the warp yarn has a linear density of 5.56tex/24f and a twist of 6T/S.
Preferably, the linear density of the first weft yarn is 16.67tex/144f, and the twist is 6T/S.
Preferably, the linear density of the second weft yarn is 16.67tex/144f, and the twist is 6T/S.
Preferably, the warp density of the fabric is 64 pieces/cm, the weft density of the fabric is 45 pieces/cm, the width of the fabric is 210cm, the reed number is 16 feathers/piece, and each reed penetrates into 4 pieces.
Meanwhile, the invention also provides a performance evaluation method of the graphene fabric with the ultraviolet resistance and the far infrared resistance, which comprises an ultraviolet resistance test of the fabric and a far infrared resistance test of the fabric, wherein the far infrared resistance test of the fabric comprises a far infrared emissivity test and a far infrared radiation temperature rise test.
Further, the specific method for testing the ultraviolet resistance of the fabric comprises the following steps:
1) Placing the sample in a standard atmospheric environment with the temperature of (20+/-2) DEG C and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting an analyzer, preheating for 30min, after preheating, paving the sample on the test point smoothly, clicking a test button for testing, testing at 5 different positions of the sample, and recording UPF value and T (UVA) AV Is calculated as follows:
wherein: m is 315-400 nm; t (λ) is the broad-spectrum transmittance of the sample at wavelength λ; e (lambda) is solar spectral irradiance, W.m -2 ·nm -1 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon (lambda) is the relative erythema effect; delta (lambda) is the wavelength interval, nm.
Further, the method for testing the far infrared emissivity of the fabric comprises the following steps:
1) Cutting 3 samples with the diameter of 70mm at the proper positions of the samples, and placing the samples in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting a far infrared emissivity tester, regulating the temperature of a hot plate to enable the temperature to be stabilized at (34+/-0.1), placing a standard black body plate on the hot plate, and measuring the far infrared radiation intensity of the standard black body after the temperature is stabilized by using the far infrared radiation with the wavelength of 5-14 mu m; taking out the standard blackbody plate, placing a sample into the standard blackbody plate, and measuring the far infrared radiation intensity of the stabilized sample; finally, calculating the ratio of the far infrared radiation intensity of the sample to the standard blackbody to obtain the far infrared emissivity of the sample; each sample was tested 3 times and averaged; the calculation is as follows:
wherein: η is the far infrared emissivity of the sample,%; i is far infrared radiation intensity of the blackbody plate, W.m -2 ；I 0 Is the far infrared radiation intensity of the sample, W.m -2 。
Further, the specific method for testing the far infrared radiation temperature rise of the fabric is as follows:
1) Cutting 3 samples with the diameter of 70mm at the proper positions of the samples, and placing the samples in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting a far infrared temperature rise rate tester, preheating the tester for 30min, placing the sample at a position 500mm away from the radiation source, recording the surface temperature of the sample before testing, then starting the radiation source, recording the surface temperature of the sample after 30s, and obtaining the temperature difference of the surface of the sample before and after testing as the far infrared radiation temperature rise of the sample; the calculation is as follows:
ΔΤ＝Τ-Τ 0 (4)
wherein: ΔT is the temperature difference between before and after sample irradiation, and is at C; t (t) 0 Temperature before the sample is irradiated, DEG C; and T is the temperature of the sample after irradiation and DEG C.
The beneficial effects obtained by the invention by adopting the structure are as follows: the graphene fabric with the ultraviolet resistance and the far infrared resistance and the performance evaluation method thereof provided by the invention have the following advantages: the fabric has the characteristics of ultraviolet resistance and far infrared function by adopting the graphene polyester filaments as one group of weft yarns, and the performances and styles of the fabric are different by adopting the graphene polyester filaments and the polyester with different weft insertion ratios as the weft yarns; the ultraviolet resistance and the far infrared function of the graphene polyester filaments and the polyester mixed fabric are superior to those of the common polyester fabric.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of a graphene fabric with anti-ultraviolet and far-infrared functions according to the present invention;
FIG. 2 is a graph showing the relationship between the content of graphene polyester filaments in the weft yarn and the ultraviolet resistance of the fabric according to the embodiment of the invention;
FIG. 3 is a graph showing the relationship between the weave and the UV resistance of the fabric according to an embodiment of the invention;
FIG. 4 is a graph showing the relationship between the content of graphene polyester filaments in the weft yarn and the far infrared performance of the fabric;
FIG. 5 is a graph of fabric texture versus far infrared performance for an embodiment of the present invention;
fig. 6 is a weave pattern of an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Examples
1. Raw materials
The warp yarn is 5.56tex/24f, and the twist is 6T/S polyester filament yarn; the number of weft yarns is two, the number of weft yarns is 16.67tex/144f, the number of twists of the graphene polyester filaments is 6T/S, and the graphene content is 1%; the second weft yarn is 16.67tex/144f, the polyester filament yarn with the twist of 6T/S, like the circles in the figure 1 represent warp yarns, and the lines represent weft yarns.
2. Preparation method of functional fabric
All samples are woven by adopting the same process, and 14 samples are finally woven by adjusting the types, the warp and weft densities, the weft insertion proportion and the tissues, wherein 9 samples are woven according to the content of the graphene polyester filaments in the weft yarn from 0 to 100 under the condition that the tissues are all 5 weft satins. The trial weaving is carried out by adopting 5 different tissues when the weft insertion ratio of the graphene polyester filaments to the common polyester filaments is 1:1. The specific specification parameters are shown in table 1, and the weave pattern of each fabric is shown in fig. 6.
3. Performance test method
3.1 UV resistance test of fabrics
Principle of: irradiating the sample with UV rays, collecting the total spectral transmittance, measuring the total spectral transmittance, and calculating the ultraviolet protection factor UPF value and the ultraviolet radiation average value T (UVA) of the sample AV 。
Instrument: UV-2000S ultraviolet transmittance analyzer (Labsphere company)
The testing steps are as follows: 1) According to GB/T18830-2009 "determination of ultraviolet resistance of textiles", each sample is placed in a standard atmospheric environment with a temperature of (20+/-2) DEG C and a relative humidity of (65+/-4)%;
2) Starting an analyzer, preheating for 30min, spreading the samples on the test points flatly after preheating, clicking a test button for testing, testing at 5 different positions of each sample, and recording UPF value and T (UVA) AV Is calculated as follows:
wherein: m is 315-400 nm; t (λ) is the broad-spectrum transmittance of the sample at wavelength λ; e (lambda) is solar spectral irradiance, W.m -2 ·nm -1 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon (lambda) is the relative erythema effect; delta (lambda) is the wavelength interval, nm.
3.2 far infrared emissivity test of fabrics
Instrument: EMS 302M far infrared emissivity tester (Wuhanrong Instrument Co., ltd.), FFZ411-I textile far infrared temperature rise rate tester (Winzhou square and round instrument Co., ltd.), etc.
The testing steps are as follows: 1) According to GB/T30127-2013 (detection and evaluation of far infrared performance of textiles) 3 pieces of samples with the diameter of 70mm are respectively cut at the proper positions of each sample, and are placed in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4) percent for humidity adjustment and balance for 24 hours;
2) Starting a far infrared emissivity tester, regulating the temperature of a hot plate to enable the temperature to be stabilized at (34+/-0.1), placing a standard black body plate on the hot plate, and measuring the far infrared radiation intensity of the standard black body after the temperature is stabilized by using the far infrared radiation with the wavelength of 5-14 mu m; taking out the standard blackbody plate, placing a sample into the standard blackbody plate, and measuring the far infrared radiation intensity of the stabilized sample; and finally, calculating the ratio of the far infrared radiation intensity of the sample to the standard blackbody to obtain the far infrared emissivity of the sample. Each sample was tested 3 times and averaged; the calculation is as follows:
wherein: η is the far infrared emissivity of the sample,%; i is far infrared radiation intensity of the blackbody plate, W.m -2 ；I 0 Is the far infrared radiation intensity of the sample, W.m -2 。
3.3 far infrared radiation temperature rise test of fabrics
Instrument: EMS 302M far infrared emissivity tester (Wuhanrong Instrument Co., ltd.), FFZ411-I textile far infrared temperature rise rate tester (Winzhou square and round instrument Co., ltd.), etc.
The testing steps are as follows: 1) According to GB/T30127-2013 (detection and evaluation of far infrared performance of textiles) 3 pieces of samples with the diameter of 70mm are respectively cut at the proper positions of each sample, and are placed in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4) percent for humidity adjustment and balance for 24 hours;
2) Starting a far infrared temperature rise rate tester, preheating the tester for 30min, placing the sample at a position 500mm away from the radiation source, recording the surface temperature of the sample before testing, then starting the radiation source, recording the surface temperature of the sample after 30s, and obtaining the temperature difference of the surface of the sample before and after testing as the far infrared radiation temperature rise of the sample; the calculation is as follows:
ΔΤ＝Τ-Τ 0 (4)
wherein: ΔT is the temperature difference between before and after sample irradiation, and is at C; t (t) 0 Temperature before the sample is irradiated, DEG C; and T is the temperature of the sample after irradiation and DEG C.
4. Results and analysis
4.1 UV resistance of fabrics
When the ultraviolet rays are irradiated on the fabric, a part of the ultraviolet rays are reflected and absorbed by the surface of the fabric, and the rest of the ultraviolet rays penetrate through gaps of the fabric and irradiate the surface of a human body, so that the skin is damaged. In summary, the more ultraviolet light is absorbed and reflected by the fabric surface, the less ultraviolet light is transmitted through the fabric, and the greater the ultraviolet resistance of the fabric. Therefore, in order to enhance the ultraviolet absorption and reflection capability of the fabric, it is necessary to reduce the transmittance of ultraviolet rays. The ultraviolet resistance of the graphene terylene test sample is shown in fig. 2 and 3.
As can be seen from fig. 2, the ultraviolet resistance of the a-series samples was enhanced with the increase of the content of the graphene polyester filaments in the weft yarns. According to GB/T18830-2009, the UV protection product is required to meet UPF values > 40, and T (UVA) AV Less than 5%. When the content of the graphene polyester filaments in the weft yarns is not lower than 66.67%, the samples reach the standard of ultraviolet-proof products, namely, the samples A6, A7, A8 and A9 can be called as ultraviolet-proof products. When the content of the graphene polyester filaments in the weft yarn reaches 100%, the ultraviolet resistance of the sample is best, and the UPF value reaches 1433.56, T (UVA) AV The content of the graphene polyester filaments is 0.32%, and the graphene polyester filaments have excellent ultraviolet resistance, so that the ultraviolet resistance of the sample is enhanced. In addition, the microstructure of the fiber has a larger influence on the ultraviolet resistance of the sample, the graphene polyester fiber is 1.16dtex, and the fiber is thinner than the common polyester fiber by 2.32dtex, the specific surface area is larger, and the ultraviolet resistance of the sample is better.
As can be seen from FIG. 3, the ultraviolet resistance of the B series of samples is related to the texture of the fabric. Except that the B5 sample is an ultraviolet-proof product, all the other samples do not meetNational standard. According to national standard requirements, the greater the UPF value of the sample, the T (UVA) AV The smaller the sample, the better the ultraviolet resistance is 8 pieces of weft satins, the next 5 pieces of weft satins, and the worst is honeycomb structure. This is because the fabric texture is different, the tightness, thickness, square meter quality and average float length of the fabric are different, the float length of the 8 weft satin samples is longest, the tightness is also greatest, the thickness is greater, the square meter quality is also greater, and the ultraviolet resistance of the samples is strongest. The tightness, thickness and square meter quality of the honeycomb tissue sample are also strong, but the weakest ultraviolet resistance of the honeycomb tissue sample is due to different fabric tissues, different warp and weft interweaving conditions and different space geometric forms, the honeycomb tissue sample has more warp and weft interweaving times, the warp and weft buckling of the honeycomb tissue sample is relatively more, the surface smoothness of the sample is 80.90, and the ultraviolet reflection capability of the honeycomb tissue sample is worst, so that the ultraviolet resistance of the honeycomb tissue sample is worst.
4.2 far infrared Properties of fabrics
Far infrared refers to electromagnetic wave with the wavelength of 2.5-1000.0 mu m, which can provide weak energy for the operation of human cells and promote the microcirculation of human bodies. The far infrared textile not only can absorb the energy radiated by substances, but also can act on a human body in an infrared radiation mode, when the human body absorbs a large amount of matched far infrared rays, chemical bonds such as C-C, C-O, C-N and the like in cells and blood can generate a resonance effect, so that the temperature of the skin is increased, substances for expanding capillary vessels are generated through the reflection arc of the human body, and the blood circulation of the human body is enhanced; meanwhile, the resonance effect enables organism molecules to be at a high vibration level, the activities of nucleic acid proteins and the like can be excited, the functions of human metabolism regulation, immunity enhancement and the like can be achieved, and the auxiliary effect of disease prevention and treatment is achieved. The far infrared performance of the graphene polyester samples is shown in fig. 4.
As can be seen from fig. 4, the far infrared ray performance of the a-series samples gradually increased with the increase of the content of the graphene polyester filaments in the weft yarns. This is because the graphene fiber has a strong far infrared radiation ability, and can absorb energy radiated from a substance at normal temperature, and act on a human body in a far infrared form. When the content of the graphene polyester filaments in the weft yarns is increased, the energy for absorbing surrounding substances is increased, the emitted far infrared rays are increased, and the far infrared performance of the sample is also enhanced. According to GB/T30127-2013 standard, the far infrared emissivity of the sample with far infrared performance is not lower than 0.88%, and the temperature rise of the far infrared radiation is not lower than 1.40 ℃. When the content of the graphene polyester filaments in the sample weft yarn is not less than 25.00%, the far infrared emissivity of the sample is more than 0.88%, the temperature rise of the far infrared radiation is more than 1.40 ℃, and the sample meets the standard of the far infrared fabric. When the content of the graphene polyester filaments in the sample weft yarn is 50%, the far infrared emissivity and the far infrared radiation temperature rise and growth speed of the sample are gradually slowed down. When the content of the graphene polyester filaments in the weft yarn reaches 100%, the far infrared performance of the sample is best, the far infrared emissivity reaches 0.932%, and the far infrared irradiation temperature rise is 1.97 ℃, because an object with the temperature higher than absolute zero radiates infrared rays. The infrared ray is an electromagnetic wave, electrons in the fabric absorb external energy to excite, and electrons on the outer layer can deviate from the original orbit and enter into a higher energy position. However, electrons are not stable enough at higher energy levels and can return to their original energy levels by releasing energy. With the increase of the content of the graphene polyester filaments in the sample, the graphene in the sample is increased, and the more the energy radiated by the human body and the outside is absorbed, the more far infrared rays acting on the human body are also absorbed, so that the better the far infrared performance of the sample is.
As can be seen from fig. 5, the B series samples all meet the standards of far infrared fabrics, but the fabric structure has a certain influence on the far infrared performance. The far infrared performance of the honeycomb tissue sample is best and the far infrared performance of the 8 weft satin sample is worst. The far infrared emissivity of the fabric is related to the morphology of the fabric surface, and the coarser the fabric surface, the greater the far infrared emissivity. Among the B series samples, the honeycomb structure sample had the coarsest surface and the thickest thickness, so that the far infrared performance was the best. The far infrared performance of the 8-piece satin sample is inferior to that of the plain weave, because the fabric surface becomes smoother as the number of fabric pieces increases, and the far infrared ray reflection ability is stronger when far infrared rays are radiated to the object surface, and the far infrared performance of the fabric is worse. In addition, the 8-piece weft satin fabric has more infrared reflection and less absorption compared with other weave fabrics.
According to the analysis, the far infrared performance of the fabric can be enhanced by increasing the content of the graphene polyester filaments or the graphene acrylic staple yarns in the weft yarns. In addition, the fabric texture also has a certain influence on the far infrared performance of the fabric, the fabric texture influences the surface morphology of the fabric, and the coarser the fabric is, the thicker the thickness is, and the better the far infrared performance is.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The graphene fabric with the ultraviolet and far infrared resistant functions is characterized by being formed by interweaving warp yarns and weft yarns in a weft double structure, wherein the warp yarns are common polyester filaments, the weft yarns comprise weft yarns I and weft yarns II, the weft yarns I are graphene polyester filaments, and the weft yarns II are common polyester filaments.
2. The graphene fabric with ultraviolet and far infrared resistant functions according to claim 1, wherein the weft insertion ratio of the weft yarn one to the weft yarn two is selected from one or more of 0:1, 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, 4:1 and 1:0.
3. The graphene fabric with ultraviolet and far infrared resistant functions according to claim 2, wherein the fabric weave is a double weft weave of 8-piece satins and 16-piece satins, the fabric has a front color of 8-piece satins and 16-piece weft satins, and a back color of 8-piece satins and 16-piece weft satins.
4. The graphene fabric with ultraviolet and far infrared resistant functions according to claim 1, wherein the warp yarn has a linear density of 5.56tex/24f and a twist of 6T/S.
5. The graphene fabric with ultraviolet and far infrared resistant functions according to claim 1, wherein the linear density of the weft yarn one is 16.67tex/144f, and the twist is 6T/S.
6. The graphene fabric with ultraviolet and far infrared resistant functions according to claim 1, wherein the linear density of the second weft yarn is 16.67tex/144f, and the twist is 6T/S.
7. The method for evaluating the performance of a graphene fabric having ultraviolet and far infrared resistance functions according to any one of claims 1 to 6, wherein the ultraviolet resistance test of the fabric and the far infrared resistance test of the fabric, the far infrared resistance test of the fabric including a far infrared emissivity test and a far infrared radiation temperature rise test.
8. The method for evaluating the performance of the graphene fabric with the ultraviolet and far infrared resistant functions according to claim 7, wherein the specific method for testing the ultraviolet resistance of the fabric is as follows:
1) Placing the sample in a standard atmospheric environment with the temperature of (20+/-2) DEG C and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting an analyzer, preheating for 30min, and flatly paving the sample at the test point after preheating is finishedThe test button was clicked to test at 5 different positions on the sample, and UPF values and T (UVA) were recorded AV Is calculated as follows:
wherein: m is 315-400 nm; t (λ) is the broad-spectrum transmittance of the sample at wavelength λ; e (lambda) is solar spectral irradiance, W.m -2 ·nm -1 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon (lambda) is the relative erythema effect; delta (lambda) is the wavelength interval, nm.
9. The method for evaluating the performance of the graphene fabric with the ultraviolet and far infrared resistant functions according to claim 7, wherein the method for testing the far infrared emissivity of the fabric is specifically as follows:
1) Cutting 3 samples with the diameter of 70mm at the proper positions of the samples, and placing the samples in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting a far infrared emissivity tester, regulating the temperature of a hot plate to enable the temperature to be stabilized at (34+/-0.1), placing a standard black body plate on the hot plate, and measuring the far infrared radiation intensity of the standard black body after the temperature is stabilized by using the far infrared radiation with the wavelength of 5-14 mu m; taking out the standard blackbody plate, placing a sample into the standard blackbody plate, and measuring the far infrared radiation intensity of the stabilized sample; finally, calculating the ratio of the far infrared radiation intensity of the sample to the standard blackbody to obtain the far infrared emissivity of the sample; each sample was tested 3 times and averaged; the calculation is as follows:
wherein: eta isFar infrared emissivity,%; i is far infrared radiation intensity of the blackbody plate, W.m -2 ；Ι 0 Is the far infrared radiation intensity of the sample, W.m -2 。
10. The method for evaluating the performance of the graphene fabric with the ultraviolet and far infrared resistant functions according to claim 7, wherein the specific method for testing the far infrared radiation temperature rise of the fabric is as follows:
1) Cutting 3 samples with the diameter of 70mm at the proper positions of the samples, and placing the samples in a standard atmospheric environment with the temperature of (20+/-2) ℃ and the relative humidity of (65+/-4)% for humidity adjustment and balance for 24 hours;
2) Starting a far infrared temperature rise rate tester, preheating the tester for 30min, placing the sample at a position 500mm away from the radiation source, recording the surface temperature of the sample before testing, then starting the radiation source, recording the surface temperature of the sample after 30s, and obtaining the temperature difference of the surface of the sample before and after testing as the far infrared radiation temperature rise of the sample; the calculation is as follows:
ΔΤ＝Τ-Τ 0 (4)
wherein: ΔT is the temperature difference between before and after sample irradiation, and is at C; t (t) 0 Temperature before the sample is irradiated, DEG C; and T is the temperature of the sample after irradiation and DEG C.
CN202311019610.1A 2023-08-14 2023-08-14 Graphene fabric with ultraviolet resistance and far infrared function and performance evaluation method thereof Pending CN116876137A (en)

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