Multifunctional hydrophobic coating fabric for mountaineering glove lining and preparation method

Abstract

The invention discloses a multifunctional hydrophobic coating fabric for a mountaineering glove lining and a preparation method, and relates to the technical field of multifunctional intelligent textiles. Waterborne polyurethane is placed in a dispersing device, a dispersing agent is slowly injected through a dropper, and interface activation dispersion is conducted at a high rotating speed; silver-coated copper powder is added in three times, and the rotating speed is increased in a stepped mode for high-speed shearing dispersion after each time of feeding; increasing the rotating speed, equivalently adding a certain amount of leveling agent twice, standing and continuously dispersing after adding every time, adding a foaming agent and continuously dispersing, switching to a low-rotating-speed dispersing mode, slowly adding a certain amount of thickening agent and stirring to primarily homogenize the system, and finally flatly paving the fabric on a coating machine, and curing at room temperature to obtain the final coating fabric. The coated fabric has excellent hydrophobicity, infrared stealth performance, conductivity and ultraviolet resistance, the preparation process is simple and environmentally friendly, operation is convenient, the preparation cost is low, and the coated fabric has wide application prospects in mountaineering glove linings.

Description

Technical Field

[0001] The present invention relates to the technical field of multifunctional intelligent textiles, and specifically to a multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method thereof. Background Art

[0002] With the popularization of outdoor sports and the development of intelligent wearable technologies, the functional requirements of mountaineering gloves have expanded from traditional warmth and waterproofing to environmental protection and intelligent interaction fields. Although the current mountaineering gloves on the market can meet basic protection needs, there are still obvious deficiencies when dealing with complex outdoor environments. The strong ultraviolet radiation in high-altitude areas accelerates the aging of ordinary glove materials while increasing the risk of skin damage to users; in military or special operation scenarios, traditional fabrics cannot effectively adjust heat radiation characteristics, making wearers easily detectable by infrared detection devices. In addition, although conductive fabrics have been applied to some intelligent glove products, existing materials often struggle to balance conductive performance and environmental protection functions, resulting in insufficient reliability and durability of products when used outdoors.

[0003] In the prior art, attempts to improve the functionality of gloves mainly focus on enhancing single performance. For example, in the "Anti-ultraviolet Polyvinyl Chloride Gloves and Their Preparation Process" disclosed in Patent Publication No. CN112063069A, by adding an ultraviolet shielding agent to the polyvinyl chloride coating, although the anti-ultraviolet performance of the gloves is improved, it does not involve infrared stealth and conductive functions at all;

[0004] In the "Conductive Massage Gloves Containing Silver Fibers" disclosed in Patent Publication No. CN103584998A, the conductive function of the gloves is achieved through silver fiber weaving, but silver fibers are prone to oxidation and failure in outdoor environments and lack environmental protection performance.

[0005] The present invention aims to solve the above technical problems, and thus proposes a multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method thereof to solve the above technical problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method thereof. By optimizing the process parameters of the silver-coated copper conductive coating on the fabric substrate, it has ultraviolet protection, infrared stealth, and conductive properties, while maintaining the original comfort of the fabric, thereby solving problems such as single function and mutual restriction of performance proposed in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method thereof, including the following steps:

[0008] S1. Primary dispersion: Place the aqueous polyurethane in a dispersion dish, slowly inject the dispersant into the dispersion dish using a dropper, and perform interfacial activation dispersion at a high rotational speed of the stirring shaft of the stirring device for 5 ± 2 min;

[0009] S2. Stepwise feeding: Using the stepwise equal feeding method, add the silver-coated copper powder in three portions, with an interval of 15 ± 1 min each time, into the dispersion dish. After each feeding, stepwise increase the rotational speed of the stirring shaft of the stirring device for high-speed shear dispersion. The total dispersion time is 45 ± 2 min. During this period, monitor the viscosity and record the rheological properties of the system in real time;

[0010] S3. Fine conditioning: Increase the rotational speed of the stirring shaft of the stirring device, add a certain amount of leveling agent to the dispersion dish in two equal portions, let it stand for 2 ± 0.5 min after each addition and then continue to disperse for 3 ± 1 min, and then add the foaming agent to the dispersion dish and continue to disperse;

[0011] S4. Rheological property regulation: Switch the stirring shaft of the stirring device to the low rotational speed dispersion mode, slowly add a certain amount of thickener and stir for 10 ± 3 min to make the system preliminarily homogeneous, and at the same time control the viscosity of the coating liquid within the required range;

[0012] S5. Precision coating: Lay the fabric flat on the coater, at a coating speed of 4 mm / s, set the coating distance to 200 mm, set the wet film thickness to 1.00 ± 0.05 mm and then coat, and cure at room temperature for 180 min to obtain the final coated fabric.

[0013] Furthermore, preferably, during the interfacial activation dispersion in S1, the rotational speed of the disperser is controlled at 750 - 850 rpm.

[0014] Furthermore, during the interfacial activation dispersion in S1, the rotational speed of the disperser is controlled at 800 rpm.

[0015] Preferably, the dosage of the dispersant in S1 is 3% of the total mass of the resin.

[0016] Preferably, the dosage of the silver-coated copper powder in S1 is 110% of the total mass of the resin.

[0017] Preferably, the stepwise rotational speed in S1 is controlled at 1500 → 1800 → 2000 rpm

[0018] Preferably, during the dispersion in S2, the rotational speed of the disperser is controlled at 1300 - 1500 rpm.

[0019] Furthermore, during the dispersion in S2, the rotational speed of the disperser is controlled at 1450 rpm.

[0020] Preferably, the dosage of the leveling agent in S2 is 4 - 5% of the total mass of the resin.

[0021] Further, the dosage of the leveling agent in S2 is 4.5% of the total mass of the resin.

[0022] Preferably, the dosage of the foaming agent in S2 is 0.1 - 0.2% of the total mass of the resin.

[0023] Further, the dosage of the foaming agent in S2 is 0.1% of the total mass of the resin.

[0024] Preferably, the single - adjustment amplitude of the rotation speed in S2 is controlled within ±(80 - 120) rpm.

[0025] Further, the single - adjustment amplitude of the rotation speed in S2 is controlled within ±100 rpm

[0026] Preferably, the rotation speed of the disperser in S3 is controlled within 400 - 500 rpm.

[0027] Further, the rotation speed of the disperser in S3 is controlled at 450 rpm.

[0028] Preferably, the viscosity of the coating liquid in S3 is controlled at 45000 ± 200 mPa·s.

[0029] Further, the viscosity of the coating liquid in S3 is 45000 mPa·s.

[0030] A preparation device for a multifunctional hydrophobic coating fabric for mountaineering glove linings, including an operation table, on one side of the upper surface of the operation table, a threaded pillar is installed, a push table is slidably installed in the middle of the operation table, a dispersion dish is arranged on the upper surface of the push table, a stirring device is arranged above the dispersion dish, and also includes a multi - adjustment control mechanism and an eccentric dispersion mechanism;

[0031] The multi - adjustment control mechanism is arranged on the stirring device, and the multi - adjustment control mechanism is used for the adjustment and stabilization of the stirring height;

[0032] The eccentric dispersion mechanism is arranged in the push table, and the eccentric dispersion mechanism is used for the deflection and lifting of the dispersion dish.

[0033] Preferably, the multi-adjustment control mechanism includes an adjustment ring which is threadedly connected to a threaded pillar. A bracket is rotatably connected to the upper surface of the adjustment ring. A limiting groove is provided on the threaded pillar, and the bracket is slidably connected in the limiting groove. One end of the bracket away from the threaded pillar is fixedly installed on the stirring device. A guiding block is fixedly installed at the bottom of the bracket. A guiding groove is provided in the middle of the guiding block, and an adjusting support plate is slidably connected in the guiding groove. At the middle of both ends of the adjusting support plate close to the guiding block, there are rotatably connected ratchets. A turbine is fixedly installed in the middle of the ratchet. A worm is engaged below the turbine. A connecting shaft is fixedly connected to the middle of the worm. A transmission groove is provided through the middle of the guiding block, and the connecting shaft is arranged in the transmission groove. One end of the worm away from the connecting shaft is fixedly connected to a turning knob, and the outer surface of the axis of the turning knob is rotatably connected to the adjusting support plate.

[0034] Preferably, sliding teeth are symmetrically arranged at both ends of the guiding block, and the tooth surface of the ratchet is engaged with the sliding teeth. A transmission shaft is arranged in the middle of the end of the adjusting support plate away from the guiding block, and the transmission shaft is installed on the driving shaft of the stirring device. A telescopic shaft is slidably connected in the transmission shaft. A bearing is fixedly installed on the outer surface of the telescopic shaft, and a connecting cylinder is installed on the outer surface of the bearing. The upper end of the connecting cylinder is fixedly connected to the bottom of the adjusting support plate. The bottom end of the telescopic shaft is installed with a stirring blade.

[0035] Preferably, the eccentric dispersion mechanism includes a container sleeve plate. A rubber sleeve ring is installed on the inner wall of the container sleeve plate, and the rubber sleeve ring is made of rubber flexible material. An elevating shaft is fixedly installed at the eccentric position of the bottom of the container sleeve plate. An arc-shaped ring groove is provided on the outer surface of the elevating shaft. One end of the elevating shaft away from the container sleeve plate is installed with a telescopic rod. One end of the telescopic rod away from the elevating shaft is fixedly installed with a servo motor, and the servo motor is installed in the middle of the push table. A tray is sleeved outside the elevating shaft. An extrusion block is fixedly connected to the inner wall of the middle of the tray, and the extrusion block is slidably connected to the arc-shaped ring groove provided on the elevating shaft.

[0036] Compared with the prior art, the present invention provides a multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method, having the following beneficial effects:

[0037] (1) The multifunctional synergistic effects of hydrophobicity (contact angle 93.2° on the front side and 129.3° on the back side), ultraviolet resistance (UPF value 242 on the front side and 220 on the back side), infrared stealth (infrared emissivity 0.488 on the front side and 0.698 on the back side), and conductivity (surface resistance 0.271 on the front side) are realized on a single-layer fabric substrate, breaking through the limitations of the single function of traditional materials.

[0038] (2) The glove's reversible function is achieved through an asymmetric structure design: the difference in infrared emissivity between the front and back sides of the coated fabric is > 0.2, endowing the material with the ability of "intelligent thermal management". It can simply be flipped to adapt to extreme low-temperature environments (with the high-infrared-emissivity side facing out) and tactical requirements (with the low-infrared-emissivity side facing out), reducing the amount of equipment to be carried. This represents a technological leap from passive protection to active adaptation for outdoor equipment. Description of the Drawings

[0039] Figure 1 It is a flowchart of the steps for the preparation method of a multifunctional hydrophobic coated fabric for the lining of mountaineering gloves;

[0040] Figure 2 It is a schematic diagram of the preparation process;

[0041] Figure 3 It is a graph of the contact angle data of the coated fabric;

[0042] Figure 4 It is a graph of the infrared stealth performance data of the coated fabric;

[0043] Figure 5 It is a graph of the electrical conductivity data of the coated fabric;

[0044] Figure 6 It is a graph of the ultraviolet resistance performance data of the coated fabric;

[0045] Figure 7 It is a physical diagram of the experimental preparation sample in Example 1;

[0046] Figure 8 It is a schematic diagram of the three-dimensional structure of the present invention;

[0047] Figure 9 It is an auxiliary schematic diagram of the three-dimensional structure of the present invention;

[0048] Figure 10 For the present invention Figure 9 The enlarged view at A in;

[0049] Figure 11 It is a schematic diagram of the structural connection relationship of the multi-adjustment control mechanism of the present invention;

[0050] Figure 12 For the present invention Figure 11 The enlarged view at B in;

[0051] Figure 13 It is an exploded schematic diagram of the structural connection relationship of the eccentric dispersion mechanism of the present invention;

[0052] Figure 14 It is an auxiliary exploded schematic diagram of the structural connection relationship of the eccentric dispersion mechanism of the present invention.

[0053] In the figure:

[0054] 1. Operating table; 11. Threaded support; 12. Pushing table; 13. Dispersion dish; 14. Stirring device;

[0055] 2. Multi - adjustment control mechanism; 21. Adjusting ring; 22. Limit groove; 23. Bracket; 24. Guide block; 25. Adjusting support plate; 26. Rotating knob; 27. Turbine; 28. Ratchet; 29. Sliding tooth; 201. Transmission shaft; 202. Connecting cylinder; 203. Telescopic shaft;

[0056] 3. Eccentric dispersion mechanism; 31. Container sleeve plate; 32. Lifting shaft; 33. Telescopic rod; 34. Tray; 35. Extrusion block; 36. Rubber sleeve ring. Specific implementation mode

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] Embodiment 1:

[0059] See Figure 1 , a multifunctional hydrophobic coating fabric for mountaineering glove linings and a preparation method, including the following steps:

[0060] Step 1:

[0061] Primary dispersion: Take 70 g of water - based polyurethane and add it to the dispersion dish 13 with a volume of 500 mL. Adjust the dispersion device, as Figures 7 to 14 shown, and the specific operation is as follows:

[0062] First, the operator rotates the adjusting ring 21. Since the adjusting ring 21 is threadedly connected to the threaded support 11, the upper surface of the adjusting ring 21 is rotatably connected to the bracket 23. The threaded support 11 is provided with a limit groove 22, and the bracket 23 is slidably connected in the limit groove 22. One end of the bracket 23 away from the threaded support 11 is fixedly installed on the stirring device 14; at this time, by rotating the adjusting ring 21, the bracket 23 can be directly driven to move up and down on the threaded support 11, and by rotating the adjusting ring 21, the stirring device 14 can be quickly adjusted to a suitable stirring and dispersion height;

[0063] Furthermore, since a guide block 24 is fixedly installed at the bottom of the support 23, a guide groove is formed in the middle of the guide block 24, and an adjusting support plate 25 is slidably connected in the guide groove. At the middle parts of both ends of the side of the adjusting support plate 25 close to the guide block 24, ratchets 28 are rotatably connected. A turbine 27 is fixedly installed in the middle of the ratchet 28. A worm is meshed below the turbine 27. A connecting shaft is fixedly connected to the middle of the worm. A transmission groove is formed through the middle of the guide block 24, and the connecting shaft is arranged in the transmission groove. A torsion 26 is fixedly connected to the end of the worm away from the connecting shaft. The outer surface of the axis of the torsion 26 is rotatably connected to the adjusting support plate 25. Slide teeth 29 are symmetrically arranged at both ends of the guide block 24, and the tooth surfaces of the ratchets 28 are meshed with the slide teeth 29;

[0064] Among them, the torsion 26 to the slide teeth 29 are symmetrically arranged on both sides of the guide block 24; and by an operator rotating the torsion 26, high-precision adjustment of the adjusting support plate 25 can be realized, which is beneficial to the stirring rod of the stirring device 14 always being at a suitable height for stirring;

[0065] Furthermore, since a transmission shaft 201 is arranged in the middle of the end of the adjusting support plate 25 away from the guide block 24, the transmission shaft 201 is installed on the drive shaft of the stirring device 14. A telescopic shaft 203 is slidably connected in the transmission shaft 201. A bearing is fixedly installed on the outer surface of the telescopic shaft 203, and a connecting cylinder 202 is installed on the outer surface of the bearing. The upper end of the connecting cylinder 202 is fixedly connected to the bottom of the adjusting support plate 25, and a stirring blade is installed at the bottom end of the telescopic shaft 203;

[0066] By rotating the torsion 26, fine adjustment of the height of the adjusting support plate 25 can be realized. Through the adjusting support plate 25, the stirring shaft at the bottom of the telescopic shaft 203 can be directly driven to adjust the height. Compared with the traditional stirring and dispersing device, in the present invention, through secondary adjustment, by quickly adjusting the height of the adjusting ring 21, the dispersing device can be quickly adjusted to a roughly appropriate height, and then finely adjusted through the torsion 26 to ensure that the stirring shaft of the dispersing device is at the optimal working height. This fast and precise adjustment method can significantly improve work efficiency and reduce adjustment time.

[0067] The secondary mechanism realizes fine adjustment of the height, which means that the height of the dispersing device can be controlled more precisely. This is particularly important for occasions that require high-precision operations, such as certain industrial production processes with strict requirements for stirring effects.

[0068] Furthermore, before the height of the stirring shaft of the stirring device 14 is adjusted, first place the dispersing dish 13 above the push table 12 in the container socket 31. At this time, as Figure 2As shown, since a rubber collar 36 is installed on the inner wall of the container tray 31, the rubber collar 36 is made of a flexible rubber material, and the inner diameter of the rubber collar 36 is adapted to the outer diameter of the dispersion dish 13. At this time, the dispersion dish 13 can be more stable under the flexible frictional clamping of the rubber collar 36, while reducing the mechanical damage caused by the uneven clamping of the existing clamping device to the dispersion dish 13 and reducing the risk of damage to the surface of the dispersion dish 13.

[0069] Further, a lifting shaft 32 is fixedly installed at the eccentric position of the bottom of the container tray 31. An arc-shaped ring groove is formed on the outer surface of the lifting shaft 32. One end of the lifting shaft 32 away from the container tray 31 is provided with a telescopic rod 33. One end of the telescopic rod 33 away from the lifting shaft 32 is fixedly installed with a servo motor, and the servo motor is installed in the middle of the push table 12. A tray 34 is sleeved outside the lifting shaft 32. A pressing block 35 is fixedly connected to the inner wall of the middle of the tray 34, and the pressing block 35 is slidably connected to the arc-shaped ring groove formed in the lifting shaft 32.

[0070] Among them, when the dispersion dish 13 is placed in the container tray 31 and is in stable contact with the rubber collar 36, at this time, the servo motor installed in the push table 12 is started by the operator. At this time, the rotation of the motor will drive the telescopic rod 33 shown in the dispersion dish 13 to start rotating. Since the pressing block 35 is slidably pressed in the arc-shaped ring groove formed in the lifting shaft 32, when the servo motor rotates, it will drive the lifting shaft 32 to start reciprocating up and down under the extrusion action of the pressing block 35 and the arc-shaped ring groove. At this time, since the lifting shaft 32 is eccentrically fixedly installed at the bottom of the container tray 31, due to the eccentric fixed installation of the lifting shaft 32, the rotation of the lifting shaft 32 will drive the container tray 31 to start rotating around the lifting shaft 32. At this time, the eccentric rotation of the container tray 31 will drive the dispersion dish 13 to start eccentric rotation; The advantages of this scheme are as follows:

[0071] (1)Enhanced shear force:

[0072] In this scheme, the combined reciprocating up and down movement of the dispersion dish 13 and the eccentric rotation of the stirring shaft make the material in the dispersion dish 13 receive a stronger shear force. This shear force helps to quickly break the aggregates or large pieces in the material into smaller particles, thereby improving the dispersion effect.

[0073] (2)Promote material circulation:

[0074] The combined action of the eccentric rotation and the reciprocating up and down movement of the dispersion dish 13 makes the material form a complex flow pattern in the dispersion dish 13; This flow pattern helps to evenly distribute the material in the container, avoiding too high or too low local concentration, thereby improving the uniformity of dispersion.

[0075] (3)Multi-angle dispersion:

[0076] The reciprocating up-and-down motion of the dispersion dish 13 disperses the material in the vertical direction, while the eccentric rotation of the stirring shaft disperses the material in the horizontal direction. This multi-angle dispersion method helps ensure that the material is fully dispersed in all directions.

[0077] (4) Reduce the dispersion blind area:

[0078] Traditional dispersion devices may have dispersion blind areas, that is, it is difficult to fully disperse the material in some areas. By setting the structure of the dispersion dish 13 that can reciprocate up and down and rotate eccentrically around the stirring shaft of the stirring device 14, the dispersion blind area can be effectively reduced, ensuring that the material is fully dispersed in all areas within the container.

[0079] At this time, start setting the rotation speed of the above dispersion device to 800 rpm, slowly add 2.1 g of dispersant (HTK-5040) with a glass dropper, and continue to disperse for 5 min until the system becomes semi-transparent;

[0080] Step 2:

[0081] Adopt the step-by-step feeding method: Add 25.7 g of silver-coated copper powder for the first time, increase the stirring speed of the stirring device 14 to 1500 rpm and disperse for 15 min; add an equal amount of powder for the second time, increase the speed to 1800 rpm and continue to disperse for 15 min; add the remaining powder for the third time, adjust the speed to 2000 rpm and disperse for 15 min. The total dispersion time is 45 min, and the viscosity is monitored with a rotational rheometer during this period.

[0082] Step 3: Adjust the speed to 1450 rpm, add 3.15 g of leveling agent (RM-2020) in two equal amounts. After adding 1.575 g for the first time, let it stand for 2 min, and then disperse for 3 min; operate in the same way for the second time and then add 0.07 g of sodium dodecyl sulfate foaming agent, and continue to disperse for 35 min. When the detected viscosity change rate ≥ 5%, adjust the speed (adjustment range of ±100 rpm, response delay of 0.3 s), and stabilize for 60 s after each adjustment.

[0083] Step 4: Lower the speed to 450 rpm, slowly add a certain amount of thickener (S-7011) and stir for 10 min, and finally control the viscosity at 45000 mPa·s.

[0084] Step 5: Fix the spandex on the platform of the coater (ZY-TB-B3 type), adjust the doctor blade gap to 1.00 mm. Coating is carried out at a constant speed of 4 mm / s, and the coating track length is 200 mm. Cure at room temperature for 180 min to obtain the final coated fabric.

[0085] Example 2: Different from Example 1 as described below:

[0086] Comparative Example 1: The base material in Example 1 was replaced with cotton cloth, and the rest was the same as in Example 1;

[0087] Comparative Example 2: The base material in Example 1 was replaced with a pre-oxidized fiber felt, and the rest was the same as in Example 1;

[0088] Comparative Example 3: The base material in Example 1 was replaced with release paper, and the rest was the same as in Example 1;

[0089] Comparative Example 4: The functional filler in Example 1 was replaced with nickel powder of the same mass fraction, and the base material was still spandex.

[0090] Experimental results:

[0091] As Figures 3 to 6 shown, according to the samples in Example 1 and Comparative Example 4, testing their properties, when the functional filler is silver-coated copper, the hydrophobic property, infrared stealth property, electrical conductivity and ultraviolet resistance of the coated fabric are the best.

[0092] As Figures 3 to 6 shown, according to the samples in Example 1, Comparative Example 1 and Comparative Example 2, testing their properties, when the base material is spandex, the comprehensive performance of the coated fabric is the best. In terms of electrical conductivity and ultraviolet resistance, although Example 1 (surface resistance 0.271 Ω) is slightly inferior to Comparative Example 1 (surface resistance 0.22 Ω, the front UPF value is 1.004 times that of Example 1, and the back is 1.023 times that of Example 1) and Comparative Example 2 (surface resistance 0.187 Ω, the front UPF value is 1.132 times that of Example 1, and the back is 1.159 times that of Example 1), its comprehensive performance is significantly better than that of Comparative Example 1 and 2.

[0093] As Figures 3 to 6 shown, according to the samples in Example 1 and Comparative Example 3, testing their properties, when the base material is spandex, the comprehensive performance of the coated fabric is the best. Although the surface resistance of Example 1 (64.242% higher than that of Comparative Example 3), the infrared emissivity on the back (1.012 times higher than that of Comparative Example 3) and the UPF value (13.725% lower than that of Comparative Example 3) are slightly inferior to those of Comparative Example 3, the addition of the base material makes the hydrophobic property of the coated fabric on the front increase by 56.64% and on the back increase by 71.94% while ensuring the basic electrical conductivity (meeting the touch screen operation requirements) and ultraviolet protection (UPF 50+), and the waterproof and moisture permeability are greatly improved.

[0094] The above is only the preferred embodiment of the present invention, which is only used to help understand the method and its core idea of the present invention. However, the protection scope of the present invention is not limited thereto. For those of ordinary skill in the art in the technical field of the present invention, any equivalent replacement or change made according to the technical solution and inventive concept of the present invention should be covered within the protection scope of the present invention. In summary, the content of this specification should not be construed as a limitation to the present invention.

[0095] It should be noted that the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0096] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation method of a multifunctional hydrophobic coating fabric for mountaineering glove linings, characterized in that, It includes the following steps: S1. Primary dispersion: Place the aqueous polyurethane in the dispersion dish (13), slowly inject the dispersant into the dispersion dish (13) using a dropper, and perform interfacial activation dispersion at a high rotational speed of the stirring shaft of the stirring device (14) for 5 ± 2 min; S2. Distributed feeding: Using the stepwise equal - feeding method, add the silver - coated copper powder in three times, with an interval of 15 ± 1 min each time, into the dispersion dish (13). After each feeding, step - by - step increase the rotational speed of the stirring shaft of the stirring device (14) for high - speed shear dispersion. The total dispersion time is 45 ± 2 min. During this period, monitor the viscosity and record the rheological properties of the system in real - time; S3. Fine conditioning: Increase the rotational speed of the stirring shaft of the stirring device (14), add a certain amount of leveling agent into the dispersion dish (13) in two equal amounts. After each addition, let it stand for 2 ± 0.5 min and then continue to disperse for 3 ± 1 min. Then add the foaming agent into the dispersion dish (13) and continue to disperse; S4. Rheological property regulation: Switch the stirring shaft of the stirring device (14) to the low - rotational - speed dispersion mode, slowly add a certain amount of thickener and stir for 10 ± 3 min to make the system preliminarily homogeneous, and at the same time control the viscosity of the coating liquid within the required range; S5. Precision coating: Lay the fabric flat on the coater. At a coating speed of 3 - 5 mm / s, set the coating distance to 100 - 300 mm, set the wet film thickness to 1.00 ± 0.05 mm and then coat. Cure at room temperature for 150 - 200 min to obtain the final coated fabric.

2. The preparation method of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 1, characterized in that, The amount of the dispersant described in S1 is 2 - 4% of the total mass of the resin, and the rotational speed of the disperser during interfacial activation dispersion is 750 - 850 rpm.

3. The preparation method of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 1, characterized in that, The amount of the silver - coated copper powder described in S2 is 100 - 120% of the total weight of the resin, added in three equal amounts, with an interval of 10 - 20 min each time.

4. The preparation method of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 1, characterized in that, The amount of the leveling agent described in S3 is 4 - 5% of the total mass of the resin, added in two equal amounts, with an interval of 5 ± 1 min each time. The amount of the foaming agent is 0.1% - 0.2% of the total mass of the resin. After adding, disperse for 35 ± 3 min. When the viscosity change rate in the dispersion dish (13) ≥ 5%, the rotational speed adjustment response time ≤ 0.5 s. The rotational speed of the disperser described in S3 is controlled at 1300 - 1500 rpm; the single - time adjustment range of the rotational speed is ±(80 - 120) rpm.

5. The preparation method of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 1, characterized in that, The rotational speed of the stirring shaft of the stirring device (14) described in S4 is 400 - 500 rpm, and the viscosity of the coating liquid is 45000 ± 200 mPa·s.

6. A multifunctional hydrophobic coating fabric for the lining of mountaineering gloves, characterized in that, It is applicable to the preparation method of a multifunctional hydrophobic coated fabric for the inner lining of mountaineering gloves described in any one of claims 1 - 5.

7. An apparatus for preparing a multifunctional hydrophobic coating fabric for mountaineering glove linings, applicable to the method for preparing a multifunctional hydrophobic coating fabric for mountaineering glove linings according to any one of claims 1-5, characterized in that, It includes an operating table (1). On one side of the upper surface of the operating table (1), a threaded pillar (11) is installed. In the middle of the operating table (1), a push - table (12) is slidably installed. On the upper surface of the push - table (12), a dispersion dish (13) is arranged. Above the dispersion dish (13), a stirring device (14) is arranged. It also includes a multi - adjustment control mechanism (2) and an eccentric dispersion mechanism (3); The multi-adjustment control mechanism (2) is arranged on the stirring device (14), and the multi-adjustment control mechanism (2) is used for adjusting and stabilizing the stirring height; The eccentric dispersion mechanism (3) is arranged in the push table (12), and the eccentric dispersion mechanism (3) is used for deflecting and lifting the dish (13).

8. The preparation device of a multifunctional hydrophobic coating fabric for a mountaineering glove liner according to claim 7, characterized in that, The multi-adjustment control mechanism (2) includes an adjustment ring (21), the adjustment ring (21) is threadedly connected to the threaded pillar (11), the upper surface of the adjustment ring (21) is rotatably connected to a bracket (23), a limit groove (22) is opened on the threaded pillar (11), the bracket (23) is slidably connected in the limit groove (22), one end of the bracket (23) away from the threaded pillar (11) is fixedly installed on the stirring device (14), a guide block (24) is fixedly installed at the bottom of the bracket (23), a guide groove is opened in the middle of the guide block (24), and an adjustment support plate (25) is slidably connected in the guide groove. At the middle parts of both ends of the adjustment support plate (25) close to the guide block (24), there are rotatably connected ratchets (28), a turbine (27) is fixedly installed in the middle of the ratchet (28), a worm is engaged below the turbine (27), a connecting shaft is fixedly connected to the middle of the worm, a transmission groove is opened through the middle of the guide block (24), and the connecting shaft is arranged in the transmission groove. One end of the worm away from the connecting shaft is fixedly connected to a turning handle (26), and the outer surface of the axis of the turning handle (26) is rotatably connected to the adjustment support plate (25).

9. The preparation device of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 8, characterized in that, Sliding teeth (29) are symmetrically arranged at both ends of the guide block (24), the tooth surface of the ratchet (28) is engaged with the sliding teeth (29), a transmission shaft (201) is arranged in the middle of the end of the adjustment support plate (25) away from the guide block (24), the transmission shaft (201) is installed on the drive shaft of the stirring device (14), a telescopic shaft (203) is slidably connected in the transmission shaft (201), a bearing is fixedly installed on the outer surface of the telescopic shaft (203), and a connecting cylinder (202) is installed on the outer surface of the bearing. The upper end of the connecting cylinder (202) is fixedly connected to the bottom of the adjustment support plate (25), and a stirring blade is installed at the bottom end of the telescopic shaft (203).

10. The preparation device of a multifunctional hydrophobic coating fabric for mountaineering glove linings according to claim 7, characterized in that, The eccentric dispersion mechanism (3) includes a container sleeve disc (31), a rubber sleeve ring (36) is installed on the inner wall of the container sleeve disc (31), the rubber sleeve ring (36) is made of rubber flexible material, a lifting shaft (32) is fixedly installed at the eccentric position of the bottom of the container sleeve disc (31), an arc-shaped ring groove is opened on the outer surface of the lifting shaft (32), a telescopic rod (33) is installed at one end of the lifting shaft (32) away from the container sleeve disc (31), a servo motor is fixedly installed at one end of the telescopic rod (33) away from the lifting shaft (32), and the servo motor is installed in the middle of the push table (12). A tray (34) is sleeved outside the lifting shaft (32), an extrusion block (35) is fixedly connected to the inner wall of the middle of the tray (34), and the extrusion block (35) is slidably connected to the arc-shaped ring groove opened on the lifting shaft (32).

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