CN114525676A - Rare earth-based infrared reflection thermal fabric and preparation method and application thereof - Google Patents

Rare earth-based infrared reflection thermal fabric and preparation method and application thereof Download PDF

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CN114525676A
CN114525676A CN202210436527.3A CN202210436527A CN114525676A CN 114525676 A CN114525676 A CN 114525676A CN 202210436527 A CN202210436527 A CN 202210436527A CN 114525676 A CN114525676 A CN 114525676A
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parts
rare earth
based infrared
infrared reflection
yarn
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CN114525676B (en
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邓冠南
彭维
张光睿
方纾
李璐
成颖
刘金龙
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Tianjin Baogang Rare Earth Research Institute Co Ltd
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Tianjin Baogang Rare Earth Research Institute Co Ltd
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    • B32B2307/00—Properties of the layers or laminate
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Abstract

The invention provides a rare earth-based infrared reflection warm-keeping fabric and a preparation method and application thereof, and the rare earth-based infrared reflection warm-keeping fabric comprises a reflection layer and a heat insulation structure layer, wherein the reflection layer is formed by weaving rare earth-based infrared reflection yarns, and the rare earth-based infrared reflection yarns are prepared by impregnating yarns with rare earth-based infrared reflection impregnating solution; the rare earth-based infrared reflection impregnation liquid contains 0.1wt% -70wt% of rare earth-based infrared reflection slurry, and the rare earth-based infrared reflection slurry comprises 4.2-123 parts of reflection powder, 0.4-65 parts of near-infrared absorption powder, 25-99 parts of dispersion medium and 0.1-30 parts of dispersing agent. The fabric is combined with the reflective powder and the near-infrared absorption powder, and has a synergistic enhancement effect of infrared utilization. The rare earth-based infrared reflection warm-keeping fabric under far infrared irradiation is effectively improved by 2-6 ℃ compared with the fabric without the rare earth-based infrared reflection material.

Description

Rare earth-based infrared reflection thermal fabric and preparation method and application thereof
Technical Field
The invention belongs to the technical field of textile fabrics, and particularly relates to a rare earth-based infrared reflection warm-keeping fabric and a preparation method and application thereof.
Background
The heat loss mode comprises three modes of heat conduction, heat convection and heat radiation, and at present, the conventional method of the warm-keeping clothes in the market utilizes the filling power of down or cotton to stop the flow of air, prevent the quick loss of heat of the machine body and achieve the effect of keeping warm. The method can only reduce the loss of heat and can not actively provide warm for the body. With the progress of textile technology and science and technology, in order to further improve the warm-keeping effect of clothes, the heating element is added on the clothes and is connected through various leads, so that the heating effect is maintained by a battery, for example, in patent CN201420501751.7, "constant temperature warm-keeping circuit of warm-keeping clothes using lithium battery", a PWM/PFM control module is used to realize constant temperature control, that is, when the temperatures of the two electric heating sheets rise to a set temperature, the current flowing through the two electric heating sheets or the working states of the two electric heating sheets are controlled by a field effect transistor, so as to realize the constant temperature of the two electric heating sheets, and further realize the constant temperature of the warm-keeping clothes. But this way makes the winter clothes that are inherently bulky thicker and heavier. The thermal clothes need to disassemble the power supply part or cannot be washed by water, so that the inconvenience of washing is brought.
Disclosure of Invention
In view of the above, the invention provides a rare earth-based infrared reflection thermal fabric, a preparation method and an application thereof, aiming at overcoming the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a rare earth-based infrared reflection warm-keeping fabric comprises a reflection layer and a heat insulation structure layer, wherein the reflection layer is formed by weaving rare earth-based infrared reflection yarns, and the rare earth-based infrared reflection yarns are prepared by impregnating yarns with rare earth-based infrared reflection impregnating solution; the rare earth-based infrared reflection dipping solution contains 0.1-70 wt% of rare earth-based infrared reflection slurry, and the rare earth-based infrared reflection slurry comprises 4.2-123 parts of reflection powder, 0.4-65 parts of near-infrared absorption powder, 25-99 parts of dispersion medium and 0.1-30 parts of dispersing agent;
the reflective powder comprises the following components in parts by weight: 1-60 parts of lanthanum cerium oxide, 0-5 parts of lanthanum oxide, 0-5 parts of cerium oxide, 1-5 parts of lanthanum cerium phosphate, 0.1-8 parts of yttrium zirconium oxide, 1-15 parts of titanium oxide, 1-15 parts of calcium carbonate and 0.1-10 parts of iron oxide;
the near-infrared absorption powder comprises 0.2-55 parts of rare earth hexaboride, 0.1-5 parts of cesium tungsten bronze and 0.1-5 parts of graphene, wherein the rare earth hexaboride comprises the following components in parts by weight: 0.1-5 parts of lanthanum hexaboride, 0-5 parts of cerium hexaboride, 0-5 parts of yttrium hexaboride, 0-5 parts of europium hexaboride and CexLa1-xB6 0-10 parts of EuxLa1-xB60.1 to 5 portions of SmxLa1-xB60 to 10 portions of GdxLa1-xB60 to 5 portions of、YxLa1-xB60-5 parts of a compound, wherein X is 0.1-0.9.
Preferably, the particle size distribution of the reflective powder and the near infrared absorption powder is 90 to 450 nm.
Preferably, the dispersion medium is selected from one or more of deionized water, ethanol, ethylene glycol, propylene glycol methyl ether acetate, ethylene glycol butyl ether acetate, polymethyl methacrylate, dimethyl succinate, dimethyl glutarate and ethyl acetate.
Preferably, the dispersing agent is selected from one or more of sodium hexametaphosphate, sodium tripolyphosphate, sodium benzene sulfonate, azabenzene pyridine, acetylenic diol, polyamide wax, polyolefin wax, polycarbodiimide, hydrogenated lecithin, N-methyl pyrrolidone solution of modified polyurea, and cymene diol.
Preferably, the reflective layer and the thermal insulation structure layer are each independently selected from single face fabric, double face fabric or spacer fabric.
Preferably, the yarn materials of the reflecting layer and the heat insulation structure layer are independently selected from cotton fabric, hemp fabric, wool fabric, silk fabric and chemical fiber.
Preferably, the yarn density of the reflective layer is 5 to 10 times the yarn density of the insulation structure layer.
The preparation method of the rare earth-based infrared reflection yarn comprises the following steps:
the method comprises the following steps: uniformly mixing 0.1-70 wt% of rare earth-based infrared reflection slurry, 1-10 wt% of adhesive and 1-5 wt% of flatting agent in a high-speed dispersion machine;
step two: soaping the yarn in 35-45 ℃ water bath for 5-12min, dehydrating and drying at 80-85 ℃ for 3-7 min;
step three: cleaning, and then conveying the mixture into a dipping pool for dipping at the pH value of 7.5-8.5 and the dipping temperature of 65-75 ℃, wherein the dipping time is 5-7min, and the rolling allowance rate is 75-85%;
step four: secondary impregnation, wherein the impregnation temperature is 95-99 ℃, the impregnation time is 1-3min, the rolling residue rate is 65-75%, the drying temperature is 90-120 ℃, and the drying time is 55-75 s;
step five: and (3) transferring the yarn into a 3-7% polyester solution pool, soaking the yarn for 45-65s at the temperature of 35-55 ℃ in the pool, and drying the yarn for 3-7min at the temperature of 80-85 ℃ to obtain the rare earth-based infrared reflection yarn.
The invention also provides application of the rare earth-based infrared reflection thermal fabric in the fields of clothing and home textiles.
Compared with the prior art, the invention has the following advantages:
(1) the rare earth-based infrared reflection slurry has a unique 4f electronic layer structure, and is matched with the characteristics of reflection and absorption wavelengths of different particle sizes and different materials, so that the rare earth-based infrared reflection warm-keeping fabric has the functions of near infrared absorption and far infrared reflection. The material combination of lanthanum cerium oxide, lanthanum oxide, cerium oxide, lanthanum cerium phosphate, yttrium zirconium oxide, titanium oxide and iron oxide can effectively reflect 7500-12000 nanometer far infrared rays; the material combination of lanthanum hexaboride, cerium hexaboride, yttrium hexaboride, europium hexaboride, cerium lanthanum hexaboride, europium hexaboride, samarium hexaboride, gadolinium lanthanum hexaboride, yttrium hexaboride, cesium tungsten bronze (TTO) and graphene effectively absorbs 780-2500nm near infrared rays. Therefore, the fabric has a synergistic effect of enhancing the utilization of infrared rays by using the reflective powder and the near-infrared absorbing powder in combination. In conclusion, the reflecting layer formed by warp knitting the rare earth-based infrared reflecting yarns can convert part of radiation heat energy radiated to the reflecting layer into physical heat energy to be absorbed on the surface of the fabric for heating, and part of the radiation heat energy is radiated back to the surface of a human body, so that the effect of saving the heat loss of the human body is achieved. The rare earth-based infrared reflection warm-keeping fabric under far infrared irradiation is effectively improved by 2-6 ℃ compared with the fabric without the rare earth-based infrared reflection material.
(2) According to the invention, the rare earth-based infrared reflecting material slurry is attached to the yarns through a dipping technology and is warp-knitted to form the reflecting layer, and the heat loss is saved, the heating and the warming effects are achieved by matching with the heat insulation structure layer.
(3) The rare earth-based infrared reflection thermal fabric provided by the invention has a simple structure, the manufacturing cost of the traditional heating element thermal clothes is obviously reduced, and the cleaning is convenient.
Drawings
FIG. 1 shows Ce of the present inventionxLa1-xB6、EuxLa1-xB6、SmxLa1-xB6、GdxLa1-xB6、YxLa1-xB6A transmission spectrum of (a);
FIG. 2 shows Ce of the present inventionxLa1-xB6、EuxLa1-xB6、SmxLa1-xB6、GdxLa1-xB6、YxLa1-xB6X-ray diffraction pattern of (a).
Detailed Description
Unless defined otherwise, technical terms used in the following examples and comparative examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. Lanthanum hexaboride and TTO used in the following examples and comparative examples are commercially available, the yarn is made of cotton yarn, and other reagents are conventional biochemical reagents unless otherwise specified; the experimental methods are conventional methods unless otherwise specified, and FIG. 1 shows CexLa1-xB6、EuxLa1-xB6、SmxLa1-xB6、GdxLa1-xB6、YxLa1-xB6FIG. 2 is a spectrum of CexLa1-xB6、EuxLa1-xB6、SmxLa1-xB6、GdxLa1-xB6、YxLa1-xB6X-ray diffraction pattern of (a). The sources and the brands of other raw materials in the rare earth-based infrared reflection slurry are as follows:
and (3) lanthanum cerium oxide: the commercial Baotou rare earth institute hydrometallurgy department;
lanthanum oxide: 1312-81-8 commercially available;
cerium oxide: commercial 1345-13-7;
lanthanum cerium phosphate: the commercial Baotou rare earth institute hydrometallurgy department;
yttrium zirconium oxide: commercially available SEPR 9503;
titanium oxide: commercially available rutile titanium dioxide R265;
calcium carbonate: commercially available metallocenes 99;
iron oxide: commercial Positive Source 309-37-1
Cesium tungsten bronze: the trade name TTO20211231CN of Tianjin Bao Steel rare earth research institute on the market;
graphene: commercial technical grade of Tainuokze;
lanthanum hexaboride: commercially available L stock 202110 LLF;
cerium hexaboride: commercial C202110 CLF;
yttrium hexaboride: commercial Y material 202110 YLF;
europium hexaboride: commercial E material 202110 ELF.
The invention will be described in detail with reference to the following examples.
Examples 1 to 5 preparation of binary rare earth-based hexaboride
EXAMPLE 1 preparation of Gd0.1La0.9B6A powder comprising the steps of:
(1) according to the proportion of Gd: la: b: na: SiO 22The molar ratio is 0.1:0.9:6:24:12, Gd is weighed respectively2(CO3）3495g，La2（CO3）3 2060g，B2O3 2089g，Na 552g，SiO2720g, all raw materials are put into a high-pressure reaction kettle, 12 mol of hydrogen is introduced, the temperature is heated to 320 ℃, and the mixture is stirred for two hours. Extracting and layering the obtained product by using deionized water, carrying out suction filtration and washing on the precipitate for 5 times, and drying the obtained product for 5 hours at 110 ℃. And (3) putting the dried product and 6 kg of deionized water into a sand mill, grinding for 8 hours, testing to obtain slurry with the granularity of 700 nm, and performing first spray granulation and drying on the slurry to obtain powder with the granularity of 800 nm, wherein the first spray granulation is performed on the slurry. Carrying out secondary airflow milling, grinding and granulation on the 700-plus-800 nanometer powder to obtain a precursor of the 150-plus-130 nanometer powder, and filling the precursor into a rotary furnace, wherein the filling height of the precursor is 3 cm;
(2) and (3) introducing 10% hydrogen-nitrogen mixed gas into the rotary furnace after the material is sealed, wherein the speed is 100ml/min for 1min, and then starting to heat. A first temperature rise stage: the room temperature is 200 ℃, the aeration rate is 2ml/min, the inclination angle of the rotary furnace is 15 ℃, and the rotation speed is 10 rpm; a second temperature rising stage: from 200 ℃ to 490 ℃, the aeration rate is 5ml/min, the rotary kiln is tilted at 10 ℃ and the rotation rate is 10 rpm. Preserving the heat for 10 min; a third temperature rise stage: after the temperature is increased from 490 ℃ to 870 ℃, the aeration rate is 30ml/min, the inclination angle of the rotary kiln is 3 ℃, and the rotation speed is 30 rpm. The heating rate of the first and second heating stages is 7 ℃/min, and the heating rate of the third heating stage is 3 ℃/min. And (3) heat preservation, wherein the first temperature rise stage is used for preserving heat for 30min when reaching 200 ℃. And preserving the heat for 30min when the temperature of the second temperature rise stage reaches 490 ℃. And preserving the heat for 150min when the temperature of the third temperature rise stage reaches 870 ℃. A temperature reduction process, wherein in the first temperature reduction stage, the temperature is reduced from 850 ℃ to 490 ℃, the aeration rate is 30ml/min, and the rotation rate is 30 rpm; and a second cooling stage: the temperature was lowered from 490 ℃ to room temperature, the aeration rate was 2ml/min and the rotation rate was 10 rpm. The temperature reduction rate of the first temperature reduction stage is 15 ℃/min, the second temperature reduction stage is air-cooled along with the furnace, and the initial product can be obtained after the temperature is reduced to the room temperature.
(3) Washing the initial product with 5mol/L hydrochloric acid and deionized water until the washing solution is dripped with AgNO3No precipitation is generated in the solution to obtain a dark green reduction product Gd0.1La0.9B6。
Example 2 preparation of Ce0.1La0.9B6Powder, according to Ce: la: b: na: SiO 22The molar ratio of Ce (NO) to Ce (NO) was measured at 0.1:0.9:6:24:123)3 326g，La2（CO3）3 2060g，B2O3 2089g，Na 552g，SiO2 720g, the rest steps and 1.1 preparing Gd0.1La0.9B6The powder steps are the same.
EXAMPLE 3 preparation of Sm0.1La0.9B6Powder, according to Sm: la: b: na: SiO 22Sm (NO) is weighed according to the molar ratio of 0.1:0.9:6:24:123)3 336g，La2（CO3）3 2060g，B2O3 2089g，Na 552g，SiO2 720g, the rest of the steps are combined with 1.1 for preparing Gd0.1La0.9B6The powder steps are the same.
Example 4 preparation of Y0.1La0.9B6Powder, according to Y: la: b: na: SiO 22The molar ratio is 0.1:0.9:6:24:12, and Y (NO) is weighed respectively3)3 383g，La2（CO3）3 2060g，B2O3 2089g，Na 552g，SiO2 720g, the rest steps and 1.1 preparing Gd0.1La0.9B6The powder steps are the same.
EXAMPLE 5 preparation of Eu0.1La0.9B6Powder, according to Eu: la: b: na: SiO 22The molar ratio of EuCl to EuCl was 0.1:0.9:6:24:123 258g，La2（CO3）3 2060g，B2O3 2089g，Na 552g，SiO2 720g, the rest of the steps and 1.1 preparing Gd0.1La0.9B6The powder steps are the same.
The transmittance spectra of the five binary rare earth hexaborides prepared in example 1 and lanthanum hexaboride and cesium tungsten bronze were measured using an ultraviolet-visible-near infrared spectrophotometer (model: DUV-3700) using the binary rare earth hexaboride and lanthanum hexaboride and cesium tungsten bronze prepared in examples 1, and as shown in FIG. 1, it can be seen that the binary rare earth hexaboride and lanthanum hexaboride and cesium tungsten bronze have high absorption in the near infrared region (wavelength 780-2500 nm).
Examples 6-8 and comparative examples 1-4 rare earth based infrared reflective thermal fabrics were prepared using the binary rare earth hexaboride compounds prepared in examples 1-5.
Example 6
Taking 450-nanometer: 45 parts of lanthanum cerium oxide, 5 parts of lanthanum cerium phosphate and 2 parts of yttrium zirconium oxide; 300 nanometer level: 10 parts of titanium oxide, 15 parts of calcium carbonate and 1 part of ferric oxide. 130 nm: 5 parts of lanthanum hexaboride, 1 part of cerium hexaboride, 3 parts of europium hexaboride, 1 part of yttrium hexaboride, 3 parts of lanthanum europium hexaboride, 1 part of lanthanum cerium hexaboride, 3 parts of graphene, 5 parts of TTO, 80 parts of a deionized water-ethanol mixed solution (the volume ratio is 90: 10, the same below), 4 parts of a modified polyurea N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and a polyolefin wax mixed solution, fully and uniformly mixing to obtain rare earth-based infrared reflection slurry, and uniformly mixing 92 wt% of the rare earth-based infrared reflection slurry, 5wt% of a binder and 3wt% of a smoothing agent in a high-speed dispersion machine, and then injecting into a dipping pool. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Example 7
Taking 450-nanometer: 35 parts of lanthanum oxide and cerium oxide and 5 parts of lanthanum oxide. 400 nanometer level: 5 parts of lanthanum cerium phosphate, 3 parts of cerium oxide and 2 parts of yttrium zirconium oxide; 300 nanometer level: 10 parts of titanium oxide, 10 parts of calcium carbonate and 5 parts of ferric oxide. 130 nm: 5 parts of lanthanum hexaboride, 1 part of cerium hexaboride, 3 parts of europium hexaboride, 1 part of yttrium hexaboride, 4 parts of lanthanum europium hexaboride, 3 parts of lanthanum cerium hexaboride, 3 parts of graphene, 5 parts of TTO, 80 parts of a deionized water-ethanol mixed solution, 8 parts of a modified polyurea mixed solution of N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and polyolefin wax, fully and uniformly mixing to obtain rare earth-based infrared reflection slurry, uniformly mixing 92 wt% of the rare earth-based infrared reflection slurry, 5wt% of an adhesive and 3wt% of a smoothing agent in a high-speed dispersion machine, and injecting the mixture into a dipping tank. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Example 8
Taking 450-nanometer: 50 parts of lanthanum oxide and cerium oxide, 3 parts of lanthanum oxide and 2 parts of cerium oxide; 380 nanometer: 2 parts of lanthanum cerium phosphate and 2 parts of yttrium zirconium oxide; 250 nanometer scale: 6 parts of titanium oxide, 5 parts of calcium carbonate and 5 parts of ferric oxide. 120 nanometer level: the preparation method comprises the following steps of mixing 5 parts of lanthanum hexaboride, 1 part of cerium hexaboride, 1 part of europium hexaboride, 1 part of yttrium hexaboride, 5 parts of lanthanum europium hexaboride, 2 parts of lanthanum cerium hexaboride, 5 parts of graphene, 5 parts of TTO, 70 parts of a deionized water-ethanol mixed solution, 12 parts of modified polyurea N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and a polyolefin wax mixed solution uniformly, fully mixing uniformly to obtain rare earth-based infrared reflection slurry, mixing 92 wt% of the rare earth-based infrared reflection slurry, 5wt% of a binder and 3wt% of a smoothing agent uniformly in a high-speed dispersion machine, and injecting the mixture into a dipping tank. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Example 9
Taking 450-nanometer: 50 parts of lanthanum oxide and cerium oxide; 380 nanometer: 2 parts of lanthanum cerium phosphate and 2 parts of yttrium zirconium oxide; 250 nanometer scale: 6 parts of titanium oxide, 5 parts of calcium carbonate and 5 parts of ferric oxide. 120 nm: the preparation method comprises the following steps of fully and uniformly mixing 5 parts of lanthanum hexaboride, 5 parts of lanthanum europium hexaboride, 5 parts of graphene, 5 parts of TTO, 70 parts of deionized water-ethanol mixed solution, 12 parts of N-methyl pyrrolidone of modified polyurea, hydrogenated lecithin, sodium hexametaphosphate and polyolefin wax mixed solution to obtain rare earth-based infrared reflection slurry, uniformly mixing 92 wt% of the rare earth-based infrared reflection slurry, 5wt% of adhesive and 3wt% of smoothing agent in a high-speed dispersion machine, and injecting the mixture into a dipping tank. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary dipping, wherein the pH value is 7.5, the dipping is carried out for 1min at the temperature of 95 ℃, the rolling residual rate is 65 percent, and the drying is carried out for 55-75s at the temperature of 110 ℃. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Comparative example 1 (without using near infrared absorption powder)
Taking 450-nanometer: 45 parts of lanthanum cerium oxide, 5 parts of lanthanum cerium phosphate and 2 parts of yttrium zirconium oxide; 300 nanometer level: 10 parts of titanium oxide, 15 parts of calcium carbonate and 1 part of ferric oxide. 80 parts of deionized water and ethanol mixed solution, 4 parts of modified polyurea N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and polyolefin wax mixed solution are fully and uniformly mixed to obtain reflection slurry, and 92 wt% of reflection slurry, 5wt% of adhesive and 3wt% of smoothing agent are uniformly mixed in a high-speed dispersion machine and then injected into a dipping pool. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Comparative example 2 (without using reflective powder)
120 nanometer level: 5 parts of lanthanum hexaboride, 1 part of cerium hexaboride, 1 part of europium hexaboride, 1 part of yttrium hexaboride, 5 parts of lanthanum europium hexaboride, 2 parts of lanthanum cerium hexaboride, 5 parts of graphene, 5 parts of TTO, 80 parts of a deionized water-ethanol mixed solution, 4 parts of a modified polyurea mixed solution of N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and polyolefin wax, fully and uniformly mixing to obtain a reflection slurry, uniformly mixing 92 wt% of the reflection slurry, 5wt% of a binder and 3wt% of a smoothing agent in a high-speed dispersion machine, and injecting the mixture into a dipping pool. The solid content of the dipping pool is 10 percent. The yarn is soaped for 8min in a water bath at 35 ℃, dehydrated and dried, and dried for 5min at 85 ℃. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. And (3) transferring the yarn into a 3% polyester solution pool, soaking the yarn for 45s at the temperature of 45 ℃ and drying the yarn for 7min at the temperature of 85 ℃ to obtain the rare earth-based infrared reflection yarn. And loading the rare earth-based infrared reflection yarns into a warp knitting machine, making the infrared reflection yarns of the front needle bed into a quintupled density warp structure, and making the common yarns of the rear needle bed into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
Comparative example 3
80 parts of deionized water and ethanol mixed solution and 4 parts of N-methyl pyrrolidone, hydrogenated lecithin, sodium hexametaphosphate and polyolefin wax mixed solution of modified polyurea are fully and uniformly mixed to obtain reflection slurry, and 92 wt% of slurry, 5wt% of adhesive and 3wt% of smoothing agent are uniformly mixed in a high-speed dispersion machine and then injected into a dipping pool. The solid content of the dipping pool is 10 percent. The yarn is soaped by water bath at 35 ℃ for 8min, dehydrated and dried, and dried at 85 ℃ for 5 min. Cleaning, soaking in a soaking tank at pH7.5 at 65 deg.C for 7min, and rolling residue rate of 85%. Secondary impregnation, pH7.5, impregnation at 95 ℃ for 1min, rolling residual rate of 65 percent, drying at 110 ℃ for 55-75 s. Transferring into a 3% polyester solution pool, soaking at 45 deg.C for 45s, and oven drying at 85 deg.C for 7min to obtain yarn. The yarn is loaded into a warp knitting machine, the front needle bed is made into a quintupled density warp structure, and the common yarn of the back needle bed is made into a one-time density six-hole mesh structure. The warp knitting layers woven by the front needle bed and the back needle bed drive common yarns to be connected through a yarn guide comb, and the two layers of structures are connected to form the rare earth-based infrared reflection warm-keeping fabric.
The fabrics prepared in examples 6-9 and comparative examples 1-3 were subjected to an infrared irradiation heating test, and the temperature difference was measured with reference to the fabric of comparative example 3 which was not impregnated with the rare earth-based infrared heating impregnation solution, and the results are shown in the following table:
TABLE 1 Infrared irradiation temperature rise test results
Fabric sample Temperature difference (. degree. C.)
Example 6 3.1
Example 7 3.3
Example 8 5.3
Example 9 4.6
Comparative example 1 2.3
Comparative example 2 1.5
Comparative example 3 0
The reason is that the structure density of the heat-insulating and warm-keeping layer is dense inside and sparse outside, the connecting line is tight inside and loose outside, the outer layer is porous, the temperature of the reflecting layer is reduced, heat is transferred to the outer layer, more heat is reserved in the inner layer of the fabric, and the heat-insulating effect is achieved. The material combination of lanthanum cerium oxide, lanthanum oxide, cerium oxide, lanthanum cerium phosphate, yttrium zirconium oxide, titanium oxide and iron oxide can effectively reflect 7500-12000 nanometer far infrared rays; the material combination of lanthanum hexaboride, cerium hexaboride, yttrium hexaboride, europium hexaboride, cerium lanthanum hexaboride, europium hexaboride, samarium hexaboride, gadolinium lanthanum hexaboride, yttrium hexaboride, TTO and graphene can effectively absorb 780-doped 2500nm near infrared rays. Therefore, the fabric has a synergistic effect of enhancing the utilization of infrared rays by using the reflective powder and the near-infrared absorbing powder in combination. And the near-infrared radiation heat energy in the fabric is not utilized because the slurry of the near-infrared absorption powder is not used, the heat energy is directly radiated into the air by the human body, and the heating effect is poor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims (9)

1. A rare earth-based infrared reflection warm-keeping fabric is characterized in that: the yarn-based infrared reflection yarn is prepared by impregnating yarn with rare earth-based infrared reflection impregnating solution; the rare earth-based infrared reflection dipping solution contains 0.1-70 wt% of rare earth-based infrared reflection slurry, and the rare earth-based infrared reflection slurry comprises 4.2-123 parts of reflection powder, 0.4-65 parts of near-infrared absorption powder, 25-99 parts of dispersion medium and 0.1-30 parts of dispersing agent;
the reflective powder comprises the following components in parts by weight: 1-60 parts of lanthanum cerium oxide, 0-5 parts of lanthanum oxide, 0-5 parts of cerium oxide, 1-5 parts of lanthanum cerium phosphate, 0.1-8 parts of yttrium zirconium oxide, 1-15 parts of titanium oxide, 1-15 parts of calcium carbonate and 0.1-10 parts of iron oxide;
the near-infrared absorption powder comprises 0.2-55 parts of rare earth hexaboride, 0.1-5 parts of cesium tungsten bronze and 0.1-5 parts of graphene, wherein the rare earth hexaboride comprises the following components in parts by weight: 0.1-5 parts of lanthanum hexaboride, 0-5 parts of cerium hexaboride, 0-5 parts of yttrium hexaboride, 0-5 parts of europium hexaboride and CexLa1-xB6 0 to 10 portions of EuxLa1-xB60.1 to 5 portions of SmxLa1-xB60 to 10 portions of GdxLa1-xB60 to 5 parts of YxLa1-xB60-5 parts of a compound, wherein X is 0.1-0.9.
2. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the particle diameters of the reflective powder and the near infrared absorption powder are both distributed in the range of 90-450 nm.
3. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the dispersion medium is one or more selected from deionized water, ethanol, ethylene glycol, propylene glycol methyl ether acetate, ethylene glycol butyl ether acetate, polymethyl methacrylate, dimethyl succinate, dimethyl glutarate and ethyl acetate.
4. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the dispersing agent is selected from one or more of sodium hexametaphosphate, sodium tripolyphosphate, sodium benzene sulfonate, azalidine, acetylenic diol, polyamide wax, polyolefin wax, polycarbodiimide, hydrogenated lecithin, N-methylpyrrolidone solution of modified polyurea, and cymene diol.
5. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the reflective layer and the thermal insulation structure layer are independently selected from single-sided fabric, double-sided fabric or spacer fabric.
6. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the yarn materials of the reflecting layer and the heat insulation structure layer are respectively and independently selected from cotton fabrics, linen fabrics, wool fabrics, silk fabrics and chemical fibers.
7. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the yarn density of the reflecting layer is 5-10 times of that of the heat insulation structure layer.
8. The rare earth-based infrared-reflective thermal fabric of claim 1, wherein: the preparation method of the rare earth-based infrared reflection yarn comprises the following steps:
the method comprises the following steps: uniformly mixing 0.1-70 wt% of rare earth-based infrared reflection slurry, 1-10 wt% of adhesive and 1-5 wt% of smoothing agent in a high-speed dispersion machine;
step two: soaping the yarn in 35-45 ℃ water bath for 5-12min, dehydrating and drying at 80-85 ℃ for 3-7 min;
step three: cleaning, and then conveying the mixture into a dipping pool for dipping at the pH value of 7.5-8.5 and the dipping temperature of 65-75 ℃, wherein the dipping time is 5-7min, and the rolling allowance rate is 75-85%;
step four: secondary impregnation, wherein the impregnation temperature is 95-99 ℃, the impregnation time is 1-3min, the rolling residue rate is 65-75%, the drying temperature is 90-120 ℃, and the drying time is 55-75 s;
step five: and (3) transferring the yarn into a 3-7% polyester solution pool, soaking the yarn for 45-65s at the temperature of 35-55 ℃ in the pool, and drying the yarn for 3-7min at the temperature of 80-85 ℃ to obtain the rare earth-based infrared reflection yarn.
9. Use of the rare earth based infrared reflective thermal fabric according to any of claims 1 to 8 in the field of clothing and home textiles.
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