Fiber paper woven blended mat and processing method

Abstract

This invention relates to the field of home textile technology and provides a processing method for fiber-paper blended cooling mats, including biomimetic mineralization treatment of paper yarn, multi-level gradient blending, and in-situ hot-pressing composite. An infrared heating module with a wavelength of 2.5 μm is integrated into the reed seat of a rapier loom. During the weaving process, polycaprolactone microparticles with a particle size of 20 μm are sprayed onto the weft yarns. These microparticles are irradiated with infrared light at 120-130°C, causing them to melt and penetrate to the warp and weft yarn intersections. A three-layer integrated molding is achieved through dual-temperature zone pressure rollers. Simultaneously, polycaprolactone microparticles are sprayed onto the weft yarns, and infrared irradiation melts and penetrates them to the yarn intersections, forming "micro-welded nodes," which are discontinuous adhesive layers. Compared to traditional adhesive dots, this method reduces the coverage area and improves moisture permeability. It solves the problems of easy delamination and adhesive barrier to air permeability in traditional lamination processes. The fiber-paper blended cooling mat produced by the above method includes polycaprolactone-reinforced nodes at the weft yarn intersections.

Description

Technical Field

[0001] This invention relates to the field of home textile technology, and in particular to fiber-paper blended cooling mats and their processing methods. Background Technology

[0002] Fiber paper is a specialty paper made from natural or synthetic fibers, possessing diverse physical properties and a wide range of applications. It is broadly classified into two categories: plant fiber paper (made from wood pulp, bamboo pulp, etc.) and synthetic fiber paper (such as polypropylene, polyaramid, etc.). It typically requires impregnation with insulating varnish or adhesive before use to enhance its performance.

[0003] Fiber-paper blended cooling mats are a type of cooling mat made by blending or composite wood pulp fiber paper yarn (extracted from bamboo, rattan, or herbaceous plants) with natural or synthetic yarns as the core material. The essence of the technology lies in combining the crispness and coolness of paper fibers with the softness and durability of yarns, achieving complementary functions.

[0004] However, if fiber paper blended mats are made using traditional lamination techniques, they are prone to delamination and problems with adhesives blocking breathability. Summary of the Invention

[0005] The purpose of this invention is to provide a fiber-paper blended cooling mat and its processing method, aiming to solve the problem that if the fiber-paper blended cooling mat is made according to the traditional lamination process, it is easy to cause delamination and the adhesive will block the breathability.

[0006] Specifically, the processing method for fiber-paper blended cooling mats includes the following steps:

[0007] Step 1: Bionic mineralization treatment of paper thread

[0008] Wood pulp fiber paper thread was immersed in a composite sol with a pH value in the range of 8.5-9.0, and after being ultrasonically vibrated at a power of 40 kHz for 30 min, it was taken out and pre-cured at 60℃ to form a composite coating layer of nano-SiO2 and chitin.

[0009] Step 2: Multi-level gradient blending

[0010] S1, warp layer

[0011] The mineralized paper thread with a diameter of 0.3 mm obtained in step one is twisted together with 75D / 48F polylactic acid filament in a 3:1 ratio;

[0012] S2, weft layer

[0013] 150D / 96F polyester filaments were passed through a piezoelectric atomization device containing liquid menthol microcapsules, coated at a rate of 0. mL / min, and then wrapped and twisted with aramid staple fibers at a ratio of 10 wt%.

[0014] Step 3: In-situ hot pressing composite

[0015] An infrared heating module with a wavelength of 2.5 μm is integrated into the reed of a rapier loom. During the weaving process, polycaprolactone microparticles with a particle size of 20 μm are sprayed onto the weft yarn. The microparticles are irradiated with infrared light at a temperature of 120-130 ℃, causing them to melt and penetrate to the intersection of the warp and weft yarns. Simultaneously, bamboo pulp nonwoven fabric with a basis weight of 80 g / m² is laid on the back of the fabric. The fabric is then formed into a three-layer integrated structure by a dual-temperature zone pressure roller. The front zone of the dual-temperature zone has a temperature of 150 ℃ and an air pressure of 0.5 MPa, while the back zone has a temperature of 80 ℃ and an air pressure of 1.2 MPa.

[0016] Step 4: Bionic Layered Cooling

[0017] First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone;

[0018] The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

[0019] Therefore, during weaving, polycaprolactone microparticles are sprayed onto the weft yarns, and infrared irradiation is used to melt and penetrate them into the yarn intersections, forming "micro-welded nodes," which are discontinuous adhesive layers. The node diameter is only 0.1-0.2 mm, reducing the coverage area by 90% compared to traditional adhesive dots, and increasing the moisture permeability to 5500 g / m². 2 / 24h; solved the problems of easy delamination and air permeability barriers in traditional lamination processes;

[0020] The paper yarn undergoes a biomimetic mineralization treatment, mimicking the mineralization mechanism of seashells to construct a composite layer of nano-SiO2 and chitin on the surface of the paper yarn. Chitosan provides a bio-adhesive interface, while nano-SiO2 enhances wear resistance, reducing the wear rate by 45%, and all components are biodegradable. Biomimetic layered cooling utilizes a fractal microchannel air-cooling system designed to mimic plant leaf veins, achieving differentiated cooling in the warp direction. The warp yarn area experiences enhanced cooling at a cooling rate of 15 ℃ / s, while the weft yarn area experiences slower cooling at a cooling rate of 8 ℃ / s, eliminating deformation and warping.

[0021] The technical solution of this application will be further described below:

[0022] In one embodiment, in the biomimetic mineralization treatment of the paper thread in step one, the composite sol includes 5 wt% sodium silicate, 2 wt% chitosan and 1 wt% nanocellulose. After mineralization, the wet strength of the paper thread is increased by 50%-60%, and the contact angle is not less than 110 degrees.

[0023] In one embodiment, in the biomimetic mineralization treatment of the paper thread in step one, the wood pulp fiber paper thread is impregnated in a composite sol, the pH value of the composite sol being in the range of 8.7-8.9, and the composite sol comprising:

[0024] Sodium silicate 4.0-4.5 wt%

[0025] Chitosan nanocrystals 1.5-2.0 wt%

[0026] Lignosulfonate 0.8-1.2 wt%

[0027] Nanocellulose 0.5-0.8 wt%

[0028] The remainder is deionized water.

[0029] Furthermore, in the biomimetic mineralization treatment of the paper thread in step one, the wood pulp fiber paper thread is immersed in a sol and placed in an alternating electromagnetic field with a frequency of 50 Hz and a magnetic field strength of 0.3T; dual-frequency ultrasonic oscillation is performed simultaneously, wherein the main frequency of the dual-frequency ultrasound is 28 kHz, the auxiliary frequency is 120 kHz, the power ratio of the main frequency to the auxiliary frequency is 2:1, and the duration of dual-frequency ultrasonic oscillation is between 16 and 20 minutes.

[0030] Furthermore, in the paper wire biomimetic mineralization treatment in step one, gradient photocuring is performed. Pre-curing involves hot air treatment at 60°C for 5 minutes to form a gel network; the main curing is carried out at a wavelength of 365 nm and an intensity of 80 mW / cm. 2 Under UV-LED irradiation in an environment where the paper thread passes through the irradiation zone at a speed of 0.8 m / s, the cumulative light intensity is not less than 1200 mJ / cm.

[0031] In one embodiment, step three, in-situ hot-pressing composite, is performed by integrating the reed holder of the rapier loom into a fiber laser array with a wavelength of 1540-1560 nm and a laser power density of 8-12 W / cm². 2 During the weaving process, polycaprolactone microparticles with a particle size of 18-22 μm are sprayed at the intersection of the weft yarns. Simultaneously, a laser beam is triggered to irradiate the microparticles with a pulse width of 0.5 ms. The polycaprolactone absorbs the light energy and melts, with the melt penetrating to a depth of 50%-70% of the radius of the warp and weft yarns.

[0032] The polycaprolactone microparticles are mixed with 0.5-1.0 wt% carbon nanotubes, the outer diameter of which is 8-15 nm, and the laser absorption rate is increased from 40% to 92%; the diameter of the melt infiltration zone is 0.15-0.25 mm, and the interfacial bonding strength is not less than 30 N.

[0033] Furthermore, in the in-situ hot-pressing composite step three, a double-roller pressing system is set at the fabric output end. The double-roller pressing system includes an upper roller and a lower roller. The upper roller has a built-in alternating electromagnetic coil with a frequency of 20 kHz, and its surface is embedded with a permanent magnet array with a magnetic strength of 0.4T. The lower roller is provided with a conductive silicone layer with a hardness of 60 Shore A. When the fabric contains 80 g / m² and a loading of 1.2-1.8 wt% Fe metal ions... 3+ When the bamboo pulp nonwoven fabric passes through, it is instantly heated to 125-130 ℃ by electromagnetic induction, and then laminated under a linear pressure of 0.8-1.0 MPa to complete the electromagnetic induction pressing.

[0034] Furthermore, in step three, in-situ hot-pressing composite bonding, acoustic field-assisted curing is used; specifically, the composite is treated with a 28 kHz ultrasonic field with an intensity of 15 W / cm². 2 Simultaneously, atomized liquid nitrogen at 5-10℃ is sprayed, with the droplet size of the atomized liquid nitrogen not exceeding 10μm and the cooling rate not less than 100℃ / s.

[0035] Another object of the present invention is to provide a fiber paper-woven blended cooling mat made by the above method, comprising a top woven layer, an intermediate reinforcing layer and a bottom support layer compounded from top to bottom; polycaprolactone-reinforced nodes are formed at the weft yarn intersections of the bottom support layer.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] 1. During weaving, polycaprolactone microparticles are sprayed onto the weft yarns. Infrared irradiation is used to melt and penetrate the yarn intersections, forming "micro-welded nodes," which are discontinuous adhesive layers. The node diameter is only 0.1-0.2 mm, reducing the coverage area by 90% compared to traditional adhesive dots, and increasing the moisture permeability to 5500 g / m². 2 / 24h; solved the problems of easy delamination and air permeability barriers in traditional lamination processes;

[0038] The paper yarn undergoes a biomimetic mineralization treatment, mimicking the mineralization mechanism of seashells to construct a composite layer of nano-SiO2 and chitin on the surface of the paper yarn. Chitosan provides a bio-adhesive interface, while nano-SiO2 enhances wear resistance, reducing the wear rate by 45%, and all components are biodegradable. Biomimetic layered cooling utilizes a fractal microchannel air-cooling system designed to mimic plant leaf veins, achieving differentiated cooling in the warp direction. The warp yarn area experiences enhanced cooling at a cooling rate of 15 ℃ / s, while the weft yarn area experiences slower cooling at a cooling rate of 8 ℃ / s, eliminating deformation and warping.

[0039] 2. Chitosan nanofibers replace chitosan to form a nanoscale reinforcing framework, increasing tensile strength by 40% and enabling high-value utilization of waste. The phenolic hydroxyl groups of lignin sulfonate chelate the SiO2 precursor, accelerating the condensation reaction and reducing curing time by 50%. Nanocellulose bridges chitosan nanofibers and wood pulp fibers, improving interfacial bonding and increasing peel strength by 25%. Chitosan nanofibers, lignin sulfonate, and nanocellulose achieve breakthrough performance, with a wet strength of 13.5 cN / dtex (exceeding aramid 1414's 12.8 cN / dtex) and abrasion resistance improved by 71% compared to traditional processes.

[0040] 3. The permanent magnet array generates a gradient magnetic field, causing the Fe inside the nonwoven fabric to... 3+ Directed migration to the interface; electromagnetic induction Joule heating only acts on the interface layer, with a depth not exceeding 50μm, avoiding overall overheating and reducing energy consumption by 70%, achieving synergistic pressure control of electromagnetic induction and permanent magnets; ultrasonic breaking of polycaprolactone spherulites, reducing the grain size of polycaprolactone from 20μm to 5μm); liquid nitrogen ultrafast cooling inhibits crystal growth and improves toughness. Attached Figure Description

[0041] Figure 1 This is a statistical chart showing the abrasion resistance of the fiber-paper blended cooling mat of the present invention;

[0042] Figure 2 This is a statistical chart showing the moisture permeability of the fiber-paper blended cooling mat of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The specific implementation of the invention will be described in detail below with reference to specific embodiments.

[0044] Example 1

[0045] The processing method of fiber-paper blended cooling mat includes the following steps:

[0046] Step 1: Bionic mineralization treatment of paper thread

[0047] Wood pulp fiber paper thread was immersed in a composite sol with a pH value in the range of 8.5-9.0, and after being ultrasonically vibrated at a power of 40 kHz for 30 min, it was taken out and pre-cured at 60℃ to form a composite coating layer of nano-SiO2 and chitin.

[0048] Step 2: Multi-level gradient blending

[0049] S1, warp layer

[0050] The mineralized paper thread with a diameter of 0.3 mm obtained in step one is plied together with polylactic acid filaments of 75D / 48F (Note: 75D is the yarn linear density, which means that the weight of 9000 meters of yarn is 75 grams; 48F is the number of monofilaments, which means that a single filament is made up of 48 finer monofilaments) in a 3:1 ratio.

[0051] S2, weft layer

[0052] 150D / 96F polyester filaments were passed through a piezoelectric atomization device containing liquid menthol microcapsules, coated at a rate of 0. mL / min, and then wrapped and twisted with aramid staple fibers at a ratio of 10 wt%.

[0053] Step 3: In-situ hot pressing composite

[0054] An infrared heating module with a wavelength of 2.5 μm is integrated into the reed of a rapier loom. During the weaving process, polycaprolactone microparticles with a particle size of 20 μm are sprayed onto the weft yarn. The microparticles are irradiated with infrared light at a temperature of 120-130 ℃, causing them to melt and penetrate to the intersection of the warp and weft yarns. Simultaneously, bamboo pulp nonwoven fabric with a basis weight of 80 g / m² is laid on the back of the fabric. The fabric is then formed into a three-layer integrated structure by a dual-temperature zone pressure roller. The front zone of the dual-temperature zone has a temperature of 150 ℃ and an air pressure of 0.5 MPa, while the back zone has a temperature of 80 ℃ and an air pressure of 1.2 MPa.

[0055] Step 4: Bionic Layered Cooling

[0056] First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone;

[0057] The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

[0058] Therefore, during weaving, polycaprolactone microparticles are sprayed onto the weft yarns, and infrared irradiation is used to melt and penetrate them into the yarn intersections, forming "micro-welded nodes," which are discontinuous adhesive layers. The node diameter is only 0.1-0.2 mm, reducing the coverage area by 90% compared to traditional adhesive dots, and increasing the moisture permeability to 5500 g / m². 2 / 24h; solved the problems of easy delamination and air permeability barriers in traditional lamination processes;

[0059] The paper yarn undergoes a biomimetic mineralization treatment, mimicking the mineralization mechanism of seashells to construct a composite layer of nano-SiO2 and chitin on the surface of the paper yarn. Chitosan provides a bio-adhesive interface, while nano-SiO2 enhances wear resistance, reducing the wear rate by 45%, and all components are biodegradable. Biomimetic layered cooling utilizes a fractal microchannel air-cooling system designed to mimic plant leaf veins, achieving differentiated cooling in the warp direction. The warp yarn area experiences enhanced cooling at a cooling rate of 15 ℃ / s, while the weft yarn area experiences slower cooling at a cooling rate of 8 ℃ / s, eliminating deformation and warping.

[0060] In the first step of the paper thread biomimetic mineralization treatment, the composite sol includes 5 wt% sodium silicate, 2 wt% chitosan and 1 wt% nanocellulose. After mineralization, the wet strength of the paper thread is increased by 50%-60% and the contact angle is not less than 110 degrees.

[0061] Example 2

[0062] The processing method of fiber-paper blended cooling mat includes the following steps:

[0063] Step 1: Bionic mineralization treatment of paper thread

[0064] Wood pulp fiber paper yarn is impregnated in a composite sol with a pH value in the range of 8.7-8.9. The composite sol includes:

[0065] Sodium silicate 4.0-4.5 wt%

[0066] Chitosan nanocrystals 1.5-2.0 wt%

[0067] Lignosulfonate 0.8-1.2 wt%

[0068] Nanocellulose 0.5-0.8 wt%

[0069] The remainder is deionized water;

[0070] Wood pulp fiber paper thread is immersed in sol and placed in an alternating electromagnetic field with a frequency of 50 Hz and a magnetic field strength of 0.3T; dual-frequency ultrasonic oscillation is performed simultaneously, with the main frequency of the dual-frequency ultrasound being 28 kHz and the auxiliary frequency being 120 kHz, the power ratio of the main frequency to the auxiliary frequency being 2:1, and the dual-frequency ultrasonic oscillation time being between 16 and 20 minutes.

[0071] Furthermore, in the paper wire biomimetic mineralization treatment in step one, gradient photocuring is performed, with pre-curing consisting of hot air treatment at 60 ℃ for 5 min to form a gel network; the main curing is performed at a wavelength of 365 nm and an intensity of 80 mW / cm. 2 Under UV-LED irradiation in an environment where the paper thread passes through the irradiation zone at a speed of 0.8 m / s, the cumulative light intensity is not less than 1200 mJ / cm.

[0072] Therefore, chitin nanofibers replace chitosan to form a nanoscale reinforcing framework, which can increase tensile strength by 40% and realize the high-value utilization of waste; the phenolic hydroxyl groups of lignin sulfonate chelate SiO2 precursors, accelerating the condensation reaction and reducing curing time by 50%; nanocellulose bridges chitin nanofibers and wood pulp fibers, improving interfacial bonding and increasing peel strength by 25%; chitin nanofibers, lignin sulfonate, and nanocellulose achieve breakthrough performance, with a wet strength of 13.5 cN / dtex (exceeding aramid 1414's 12.8 cN / dtex) and abrasion resistance of 4800 cycles (ISO 12947), which is 71% better than traditional processes;

[0073] Step 2: Multi-level gradient blending

[0074] S1, warp layer

[0075] The mineralized paper thread with a diameter of 0.3 mm obtained in step one is twisted together with 75D / 48F polylactic acid filament in a 3:1 ratio;

[0076] S2, weft layer

[0077] 150D / 96F polyester filaments were passed through a piezoelectric atomization device containing liquid menthol microcapsules, coated at a rate of 0. mL / min, and then wrapped and twisted with aramid staple fibers at a ratio of 10 wt%.

[0078] Step 3: In-situ hot pressing composite

[0079] An infrared heating module with a wavelength of 2.5 μm is integrated into the reed of a rapier loom. During the weaving process, polycaprolactone microparticles with a particle size of 20 μm are sprayed onto the weft yarn. The microparticles are irradiated with infrared light at a temperature of 120-130 ℃, causing them to melt and penetrate to the intersection of the warp and weft yarns. Simultaneously, bamboo pulp nonwoven fabric with a basis weight of 80 g / m² is laid on the back of the fabric. The fabric is then formed into a three-layer integrated structure by a dual-temperature zone pressure roller. The front zone of the dual-temperature zone has a temperature of 150 ℃ and an air pressure of 0.5 MPa, while the back zone has a temperature of 80 ℃ and an air pressure of 1.2 MPa.

[0080] Step 4: Bionic Layered Cooling

[0081] First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone;

[0082] The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

[0083] Example 3

[0084] The processing method of fiber-paper blended cooling mat includes the following steps:

[0085] Step 1: Bionic mineralization treatment of paper thread

[0086] Wood pulp fiber paper thread was immersed in a composite sol with a pH value in the range of 8.5-9.0, and after being ultrasonically vibrated at a power of 40 kHz for 30 min, it was taken out and pre-cured at 60℃ to form a composite coating layer of nano-SiO2 and chitin.

[0087] Step 2: Multi-level gradient blending

[0088] S1, warp layer

[0089] The mineralized paper thread with a diameter of 0.3 mm obtained in step one is twisted together with 75D / 48F polylactic acid filament in a 3:1 ratio;

[0090] S2, weft layer

[0091] 150D / 96F polyester filaments were passed through a piezoelectric atomization device containing liquid menthol microcapsules, coated at a rate of 0. mL / min, and then wrapped and twisted with aramid staple fibers at a ratio of 10 wt%.

[0092] Step 3: In-situ hot pressing composite

[0093] The reed holder of a rapier loom is integrated into a fiber laser array with a wavelength of 1540-1560 nm, and the laser power density is 8-12 W / cm². 2 During the weaving process, polycaprolactone microparticles with a particle size of 18-22 μm are sprayed at the weft yarn intersections. A laser beam with a pulse width of 0.5 ms is simultaneously triggered to irradiate the microparticles. The polycaprolactone absorbs the light energy and melts, with the melt penetrating to a depth of 50%-70% of the radius of the warp and weft yarns.

[0094] Polycaprolactone microparticles are mixed with 0.5-1.0 wt% carbon nanotubes, with an outer diameter of 8-15 nm, increasing the laser absorption rate from 40% to 92%; the diameter of the melt-infiltrated zone is 0.15-0.25 mm, and the interfacial bonding strength is not less than 30 N;

[0095] A double-roller pressing system is installed at the fabric output end. The double-roller pressing system includes an upper roller and a lower roller. The upper roller has a built-in alternating electromagnetic coil with a frequency of 20 kHz, and its surface is embedded with an array of permanent magnets with a magnetic strength of 0.4T. The lower roller is equipped with a conductive silicone layer with a hardness of 60 Shore A. When the fabric contains 80 g / m² of Fe metal ions with a loading of 1.2-1.8 wt%, the pressing system is suitable for fabrics with a basis weight of 80 g / m² and a loading of 1.2-1.8 wt%. 3+ When the bamboo pulp nonwoven fabric passes through, it is instantly heated to 125-130 ℃ by electromagnetic induction, and then laminated under a linear pressure of 0.8-1.0 MPa to complete the electromagnetic induction pressing.

[0096] Acoustic field-assisted curing was used, specifically by treating the composite with a 28 kHz ultrasonic field at an intensity of 15 W / cm². 2 Simultaneously, atomized liquid nitrogen at 5-10℃ is sprayed, the droplet size of the atomized liquid nitrogen does not exceed 10μm, and the cooling rate is not less than 100℃ / s;

[0097] Therefore, the permanent magnet array generates a gradient magnetic field, causing the Fe inside the nonwoven fabric to... 3+ Directed migration to the interface; electromagnetic induction Joule heating only acts on the interface layer, with a depth not exceeding 50μm, avoiding overall overheating and reducing energy consumption by 70%, achieving synergistic pressure control of electromagnetic induction and permanent magnets; ultrasonic breaking of polycaprolactone spherulites, reducing the grain size of polycaprolactone from 20μm to 5μm); liquid nitrogen ultrafast cooling inhibits crystal growth and improves toughness;

[0098] Step 4: Bionic Layered Cooling

[0099] First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone;

[0100] The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

[0101] Example 4

[0102] The processing method of fiber-paper blended cooling mat includes the following steps:

[0103] Step 1: Bionic mineralization treatment of paper thread

[0104] Wood pulp fiber paper yarn is impregnated in a composite sol with a pH value in the range of 8.7-8.9. The composite sol includes:

[0105] Sodium silicate 4.0-4.5 wt%

[0106] Chitosan nanocrystals 1.5-2.0 wt%

[0107] Lignosulfonate 0.8-1.2 wt%

[0108] Nanocellulose 0.5-0.8 wt%

[0109] The remainder is deionized water;

[0110] Wood pulp fiber paper thread is immersed in sol and placed in an alternating electromagnetic field with a frequency of 50 Hz and a magnetic field strength of 0.3T; dual-frequency ultrasonic oscillation is performed simultaneously, with the main frequency of the dual-frequency ultrasound being 28 kHz and the auxiliary frequency being 120 kHz, the power ratio of the main frequency to the auxiliary frequency being 2:1, and the dual-frequency ultrasonic oscillation time being between 16 and 20 minutes.

[0111] Furthermore, in the paper wire biomimetic mineralization treatment in step one, gradient photocuring is performed, with pre-curing consisting of hot air treatment at 60 ℃ for 5 min to form a gel network; the main curing is performed at a wavelength of 365 nm and an intensity of 80 mW / cm. 2 Under UV-LED irradiation in an environment where the paper thread passes through the irradiation zone at a speed of 0.8 m / s, the cumulative light intensity is not less than 1200 mJ / cm.

[0112] Therefore, chitin nanofibers replace chitosan to form a nanoscale reinforcing framework, which can increase tensile strength by 40% and realize the high-value utilization of waste; the phenolic hydroxyl groups of lignin sulfonate chelate SiO2 precursors, accelerating the condensation reaction and reducing curing time by 50%; nanocellulose bridges chitin nanofibers and wood pulp fibers, improving interfacial bonding and increasing peel strength by 25%; chitin nanofibers, lignin sulfonate, and nanocellulose achieve breakthrough performance, with a wet strength of 13.5 cN / dtex (exceeding aramid 1414's 12.8 cN / dtex) and abrasion resistance of 4800 cycles (ISO 12947), which is 71% better than traditional processes;

[0113] Step 2: Multi-level gradient blending

[0114] S1, warp layer

[0115] The mineralized paper thread with a diameter of 0.3 mm obtained in step one is twisted together with 75D / 48F polylactic acid filament in a 3:1 ratio;

[0116] S2, weft layer

[0117] 150D / 96F polyester filaments were passed through a piezoelectric atomization device containing liquid menthol microcapsules, coated at a rate of 0. mL / min, and then wrapped and twisted with aramid staple fibers at a ratio of 10 wt%.

[0118] Step 3: In-situ hot pressing composite

[0119] The reed holder of a rapier loom is integrated into a fiber laser array with a wavelength of 1540-1560 nm, and the laser power density is 8-12 W / cm². 2 During the weaving process, polycaprolactone microparticles with a particle size of 18-22 μm are sprayed at the weft yarn intersections. A laser beam with a pulse width of 0.5 ms is simultaneously triggered to irradiate the microparticles. The polycaprolactone absorbs the light energy and melts, with the melt penetrating to a depth of 50%-70% of the radius of the warp and weft yarns.

[0120] Polycaprolactone microparticles are mixed with 0.5-1.0 wt% carbon nanotubes, with an outer diameter of 8-15 nm, increasing the laser absorption rate from 40% to 92%; the diameter of the melt-infiltrated zone is 0.15-0.25 mm, and the interfacial bonding strength is not less than 30 N;

[0121] A double-roller pressing system is installed at the fabric output end. The double-roller pressing system includes an upper roller and a lower roller. The upper roller has a built-in alternating electromagnetic coil with a frequency of 20 kHz, and its surface is embedded with an array of permanent magnets with a magnetic strength of 0.4T. The lower roller is equipped with a conductive silicone layer with a hardness of 60 Shore A. When the fabric contains 80 g / m² of Fe metal ions with a loading of 1.2-1.8 wt%, the pressing system is suitable for fabrics with a basis weight of 80 g / m² and a loading of 1.2-1.8 wt%. 3+ When the bamboo pulp nonwoven fabric passes through, it is instantly heated to 125-130 ℃ by electromagnetic induction, and then laminated under a linear pressure of 0.8-1.0 MPa to complete the electromagnetic induction pressing.

[0122] Acoustic field-assisted curing was used, specifically by treating the composite with a 28 kHz ultrasonic field at an intensity of 15 W / cm². 2 Simultaneously, atomized liquid nitrogen at 5-10℃ is sprayed, the droplet size of the atomized liquid nitrogen does not exceed 10μm, and the cooling rate is not less than 100℃ / s;

[0123] Therefore, the permanent magnet array generates a gradient magnetic field, causing the Fe inside the nonwoven fabric to... 3+ Directed migration to the interface; electromagnetic induction Joule heating only acts on the interface layer, with a depth not exceeding 50μm, avoiding overall overheating and reducing energy consumption by 70%, achieving synergistic pressure control of electromagnetic induction and permanent magnets; ultrasonic breaking of polycaprolactone spherulites, reducing the grain size of polycaprolactone from 20μm to 5μm); liquid nitrogen ultrafast cooling inhibits crystal growth and improves toughness;

[0124] Step 4: Bionic Layered Cooling

[0125] First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone;

[0126] The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

[0127] Example 5

[0128] The purpose of this application is to provide a fiber-paper blended cooling mat made by the above method, comprising a top-to-bottom composite surface woven layer, a middle reinforcing layer and a bottom support layer; polycaprolactone-reinforced nodes are formed at the weft yarn intersections of the bottom support layer.

[0129] Example 6

[0130] The fiber-paper blended cooling mats prepared in Examples 1-4 were tested using a YG401 fabric abrasion tester according to standard GB / T13775-1992.

[0131] according to Figure 1 and Figure 2 The data shown indicate that the moisture permeability of the fiber paper blended cooling mat is much greater than that of the commercially available ice silk cooling mat, and it obviously has better moisture permeability compared to the commercially available ice silk cooling mat.

[0132] also, Figure 1 and Figure 2 The test data also showed that the fiber paper blended cooling mat of the present invention has wear resistance comparable to that of commercially available ice silk cooling mats, indicating that the present invention also has good strength and can meet the requirements of cooling mat use conditions.

[0133] In the description of this invention, although embodiments of the 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing method for fiber-paper blended cooling mats, characterized in that, Includes the following steps: Step 1: Biomimetic mineralization treatment of paper thread to prepare mineralized paper thread. Wood pulp fiber paper yarn is impregnated in a composite sol with a pH value in the range of 8.7-8.

9. The composite sol includes: Sodium silicate 4.0-4.5 wt% Chitosan nanocrystals 1.5-2.0 wt% Lignosulfonate 0.8-1.2 wt% Nanocellulose 0.5-0.8 wt% The remainder is deionized water; Wood pulp fiber paper thread was immersed in sol and placed in an alternating electromagnetic field with a frequency of 50 Hz and a magnetic field strength of 0.3T; dual-frequency ultrasonic oscillation was performed simultaneously, with the main frequency of the dual-frequency ultrasound being 28 kHz and the auxiliary frequency being 120 kHz, the power ratio of the main frequency to the auxiliary frequency being 2:1, and the dual-frequency ultrasonic oscillation time being between 16 and 20 minutes. Step 2: Multi-level gradient blending S1. Preparation of warp yarns The mineralized paper thread with a diameter of 0.3 mm obtained in step one is plied together with 75D / 48F polylactic acid filament in a 3:1 ratio to produce warp yarn; S2. Preparation of yarn for the weft layer After coating 150D / 96F polyester filament through a piezoelectric atomization device containing liquid menthol microcapsules, it is then wrapped and twisted with aramid staple fiber at a ratio of 10 wt% to obtain weft yarn. Step 3: In-situ hot pressing composite An infrared heating module with a wavelength of 2.5 μm is integrated into the reed of a rapier loom. During the weaving process, polycaprolactone microparticles with a particle size of 20 μm are sprayed onto the weft yarn. The microparticles are irradiated with infrared light at a temperature of 120-130 ℃, causing them to melt and penetrate to the intersection of the warp and weft yarns. Simultaneously, bamboo pulp nonwoven fabric with a basis weight of 80 g / m² is laid on the back of the fabric. The fabric is then formed into a three-layer integrated structure by a dual-temperature zone pressure roller. The front zone of the dual-temperature zone has a temperature of 150 ℃ and an air pressure of 0.5 MPa, while the back zone has a temperature of 80 ℃ and an air pressure of 1.2 MPa. Step 4: Bionic Layered Cooling First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone; The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

2. The processing method of the fiber-paper blended cooling mat according to claim 1, characterized in that, In the step one paper line biomimetic mineralization treatment, gradient photocuring is carried out, and pre-curing is carried out for 5 min at 60 DEG C hot air treatment to form a gel network; main curing is carried out under the environment of UV-LED irradiation with wavelength 365 nm and intensity 80 mW / cm 2 , and the paper line passes through the irradiation area at a speed of 0.8 m / s, and the cumulative light quantity is not less than 1200 mJ / cm 2 .

3. A processing method for fiber-paper blended cooling mats, characterized in that, Includes the following steps: Step 1: Biomimetic mineralization treatment of paper thread to prepare mineralized paper thread. Wood pulp fiber paper yarn is impregnated in a composite sol with a pH value in the range of 8.7-8.

9. The composite sol includes: Sodium silicate 4.0-4.5 wt% Chitosan nanocrystals 1.5-2.0 wt% Lignosulfonate 0.8-1.2 wt% Nanocellulose 0.5-0.8 wt% The remainder is deionized water; Wood pulp fiber paper thread was immersed in sol and placed in an alternating electromagnetic field with a frequency of 50 Hz and a magnetic field strength of 0.3T; dual-frequency ultrasonic oscillation was performed simultaneously, with the main frequency of the dual-frequency ultrasound being 28 kHz and the auxiliary frequency being 120 kHz, the power ratio of the main frequency to the auxiliary frequency being 2:1, and the dual-frequency ultrasonic oscillation time being between 16 and 20 minutes. Step 2: Multi-level gradient blending S1. Preparation of warp yarns The mineralized paper thread with a diameter of 0.3 mm obtained in step one is plied together with 75D / 48F polylactic acid filament in a 3:1 ratio to produce warp yarn; S2. Preparation of yarn for the weft layer After coating 150D / 96F polyester filament through a piezoelectric atomization device containing liquid menthol microcapsules, it is then wrapped and twisted with aramid staple fiber at a ratio of 10 wt% to obtain weft yarn. Step 3: In-situ hot pressing composite A fiber laser array with a wavelength of 1540-1560 nm is integrated into the reed holder of a rapier loom, with a laser power density of 8-12 W / cm². 2 During the weaving process, polycaprolactone microparticles with a particle size of 18-22 μm are sprayed at the weft yarn intersections. A laser beam with a pulse width of 0.5 ms is simultaneously triggered to irradiate the microparticles. The polycaprolactone absorbs the light energy and melts, with the melt penetrating to a depth of 50%-70% of the radius of the warp and weft yarns. Step 4: Bionic Layered Cooling First stage: 5 ℃ cold water roller contact with cooling at a rate of 20 ℃ / s to rapidly crystallize polycaprolactone; The second stage: the leaf vein-inspired microchannel air-cooling system delivers air along the radial gradient at a wind speed of 0.8 m / s, reducing the temperature from 40℃ to 25℃ and eliminating internal stress.

4. The processing method of the fiber-paper blended cooling mat according to claim 3, characterized in that, The polycaprolactone microparticles are mixed with 0.5-1.0 wt% carbon nanotubes, the outer diameter of which is 8-15 nm, and the laser absorption rate is increased from 40% to 92%; the diameter of the melt infiltration zone is 0.15-0.25 mm, and the interfacial bonding strength is not less than 30 N.

5. The processing method of the fiber-paper blended cooling mat according to claim 3, characterized in that, In step three, in-situ hot pressing, a double-roller pressing system is installed at the fabric output end. The double-roller pressing system includes an upper roller and a lower roller. The upper roller has a built-in alternating electromagnetic coil with a frequency of 20 kHz, and its surface is embedded with a permanent magnet array with a magnetic strength of 0.4 T. The lower roller has a conductive silicone layer with a hardness of 60 Shore A. When the fabric contains 80 g / m² of Fe metal ions with a loading of 1.2-1.8 wt%, the... 3+ When the bamboo pulp nonwoven fabric passes through, it is instantly heated to 125-130 ℃ by electromagnetic induction, and then laminated under a linear pressure of 0.8-1.0 MPa to complete the electromagnetic induction pressing.

6. The processing method of the fiber-paper blended cooling mat according to claim 5, characterized in that, In step three, in-situ hot-pressing composite bonding, acoustic field-assisted curing is used; specifically, the composite is treated with a 28 kHz ultrasonic field with an intensity of 15 W / cm². 2 Simultaneously, atomized liquid nitrogen at 5-10℃ is sprayed, with the droplet size of the atomized liquid nitrogen not exceeding 10μm and the cooling rate not less than 100℃ / s.

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