A volcanic rock heating fabric and preparation method thereof

Abstract

The invention relates to a volcanic rock heating fabric and a preparation method thereof, belonging to the technical field of fabric production. The invention comprises a heating and heating layer and a flannel layer which are composited into an integrated structure through double-point coating, wherein the heating and heating layer is blended by volcanic rock fiber and hygroscopic fiber, the surface of the hygroscopic fiber is loaded with volcanic rock nanoparticles, and a heat supplement layer composed of volcanic rock nanoparticles is arranged between the heating and heating layer and the flannel layer; the volcanic rock nanoparticles are obtained by carbonizing volcanic rock to obtain powder, then grinding, mixing nano-silica gel balls and volcanic rock particles in ethanol, heating, centrifuging and washing to obtain a precipitate, and then mixing the precipitate with a montmorillonite suspension, heating and stirring, and filtering to obtain the precipitate; the invention improves the existing volcanic rock fabric technology, adopts volcanic rock particles + nano-silica gel balls + montmorillonite as a substitute, and the temperature rise reaches 9.9°C, while increasing the fabric heating and heat storage, the antibacterial and tensile properties are also increased.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric production, and in particular relates to a volcanic rock heating fabric and a preparation method thereof. Background Art

[0002] Volcanic rocks are rich in minerals and trace elements such as silicon, aluminum, calcium, sodium, magnesium, manganese, titanium, and cobalt. These complex metal oxides can easily absorb heat, and their irregular porous structure can produce long-term heat storage and lock in temperature. Volcanic rock fabrics themselves have strong thermal resistance, forming a strong thermal insulation layer, so they produce a similar "heating" effect. In addition, the human body itself is a heating body, and the thermal insulation layer locks the temperature of the human body, reducing the radiation of body temperature to the outside, forming a strong warming effect. Volcanic rock fibers can also absorb the heat energy emitted by the human body, keep warm and generate heat, and can rise to 8.2 degrees at the same time. At the same time, they have excellent properties of moisture absorption, perspiration, and quick drying. However, volcanic rock fibers have problems such as frizzy fabrics, poor hand feel, and tight wearing. At the same time, the existing volcanic rock fabrics have poor antibacterial properties due to their excellent moisture absorption and perspiration properties. Summary of the invention

[0003] The purpose of the present invention is to provide a volcanic rock heating fabric and a preparation method thereof in order to solve the above problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] The present invention provides a volcanic rock heating fabric, comprising a heating and heating layer and a flannel layer which are integrated into an integral structure by double-point coating, wherein the heating and heating layer is blended with volcanic rock fibers and hygroscopic fibers, the surface of the hygroscopic fibers is loaded with volcanic rock nanoparticles, and a heat supplement layer composed of volcanic rock nanoparticles is provided between the heating and heating layer and the flannel layer;

[0006] The volcanic rock nanoparticles are obtained by sequentially loading nano silica gel balls and montmorillonite onto volcanic rock particles.

[0007] As a further optimization scheme of the present invention, the flannel layer is woven from cotton-like polyester fibers and cotton-spandex core-spun fibers.

[0008] As a further optimization scheme of the present invention, the volcanic rock particles are obtained by high-temperature carbonization and grinding of volcanic rock, and the particle size of the volcanic rock particles is 5-10 nm.

[0009] The present invention provides a method for preparing the above-mentioned volcanic rock heating fabric, comprising the following steps:

[0010] (1) Carbonizing volcanic rock to obtain powder, then grinding it to obtain volcanic rock particles with a particle size of 5-10 nm, mixing nano-silica gel balls and volcanic rock particles in ethanol, heating and pressurizing them, centrifuging and washing to obtain a precipitate, and then mixing the precipitate with a montmorillonite suspension, heating and stirring them, and filtering them to obtain volcanic rock nanoparticles;

[0011] (2) treating the hygroscopic fiber with a catalyst and continuous hot air heat treatment, then impregnating it with volcanic rock nanoparticle glue and vacuum drying it;

[0012] (3) After weaving the hygroscopic fiber and volcanic rock fiber treated in step (2) into a heating layer, spraying volcanic rock nanoparticle glue on one side of the heating layer, and vacuum drying to obtain a heat supplement layer;

[0013] (4) The side of the heating layer provided with the supplementary heat layer is composited with the flannel layer through double-point coating, and then dried to obtain the volcanic rock heating fabric.

[0014] As a further optimization scheme of the present invention, the specific preparation process of the montmorillonite suspension in step (1) is: mixing montmorillonite with an ethanol solution, adding dodecyl quaternary ammonium salt to the solution to obtain a mixture, adding a silane coupling agent after stirring, and then adding ethanol to form a mixture, adjusting the pH to acidic, and obtaining a montmorillonite suspension after heating, cooling, and centrifugation.

[0015] As a further optimization scheme of the present invention, the catalyst treatment in step (2) is specifically to immerse the hygroscopic fiber in a titanate chelate catalyst for 20-30 minutes to increase the activation sites on the hygroscopic fiber.

[0016] As a further optimization scheme of the present invention, the continuous hot air heat treatment in step (2) is specifically as follows: the hygroscopic fiber treated with the catalyst is placed in a hot air furnace, and continuous air heat treatment is performed at a temperature in the range of 200-220°C for a treatment time of 20-30 minutes, and the hygroscopic fiber is combed to improve the orientation of the internal structure of the fiber.

[0017] As a further optimization scheme of the present invention, the volcanic rock nanoparticle glue is obtained by mixing volcanic rock nanoparticles, wax oil, emulsifier and deionized water, and then subjecting them to magnetic stirring and ultrasonic stirring. The wax oil can make the volcanic rock nanoparticles firmly adhere to the fiber or fabric, and then evaporate after vacuum drying.

[0018] As a further optimization scheme of the present invention, the equipment for dipping and spraying the volcanic rock nanoparticle glue in steps (2) and (3) is composed of a unwinding roller, a dipping and spraying assembly, a drying box and a winding roller in sequence. The dipping and spraying assembly includes a liquid storage tank, a liquid storage box located above the liquid storage tank, two rows of spray guns located at the lower end of the liquid storage tank, an ultrasonic generator located inside the liquid storage tank, a hot air roller located on the feed side of the liquid storage tank, and a cold air roller located on the discharge side of the liquid storage tank. Guide rollers and adjustment roller groups are provided on both sides of the feed and discharge of the liquid storage tank. Lifting rails for lifting and lowering the adjusting roller group are provided at both ends of the inner wall of the liquid storage tank. An automated roller clamp is also provided on the inner wall of the liquid storage tank, and the automated roller clamp is parallel to the highest point of the lifting rail.

[0019] As a further optimization scheme of the present invention, the hot air roller and the cold air roller have the same structure, including a hollow roller body, one end of the roller body is provided with a transmission gear meshing with an outer driving device, and the other end of the roller body is provided with an air inlet, and the air inlet is connected to the hot air fan duct and the cold air fan duct through a rotatable connecting head respectively, and the roller body is provided with air outlet holes, and hot air or cold air is discharged from the air outlet holes for preheating or cooling the fabric or fiber, and the air outlet holes are distributed in a spiral shape on the roller body.

[0020] Montmorillonite MMT: Montmorillonite is a layered, flaky, silicate clay mineral. The composition of montmorillonite is (Na, Ca) 0.33 (Al, Mg)2[Si4O 10 ](OH)2·nH2O, the water content varies greatly, the particles are fine, about 0.2 to 1 micron, with colloidal dispersion characteristics, the color is white with light gray, sometimes with light blue or light red, the luster is dull, it has strong adsorption and ion exchange capacity, and it also has high colloidal properties, plasticity and adhesion. After losing water, montmorillonite can also reabsorb water molecules or other polar molecules. When they absorb water, they can also expand and exceed several times of their original volume. Moreover, montmorillonite can be used for medicinal purposes. Its pharmacological studies have shown that it has a good adsorption effect on Escherichia coli, Vibrio cholerae, Campylobacter jejuni, Staphylococcus aureus and rotavirus.

[0021] Nano silica gel spheres: Alkyl or aromatic silicate is used to prepare high-purity silica gel in water phase; an organic solvent that can form an azeotropic system with water and is compatible with alkyl or aromatic silicate is added to the silica gel aqueous solution, and the water in the solution is distilled out; a silanization agent is added to the organic solution, and the silanization agent and silica gel are reacted by high-speed stirring or ultrasound; the solid particles after the organic solvent is removed are subjected to ultracentrifugation or spray drying to obtain separated functionalized nano silica gel spheres. The particle size of the nano silica gel spheres is 5-1000nm, and the skeleton may contain organic hydrocarbon groups or pure silica gel, and the surface is bonded with organic groups, and the carbon content ranges from about 0.5 to about 20%.

[0022] The beneficial effects of the present invention are:

[0023] The volcanic rock heating fabric of the present invention improves the volcanic rock particles + biomass carbon particles in the existing volcanic rock fabric technology and adopts volcanic rock particles + nano silica gel balls + montmorillonite to replace them. On the basis of the original temperature increase of 8.2°C, the temperature is increased to 9.9°C. In addition, while increasing the heating and heat storage performance of the fabric, its antibacterial and tensile properties are also increased, thereby increasing comfort.

[0024] The preparation method of the volcanic rock warming fabric described in the present invention uses a catalyst and air heat treatment to treat the fabric component fibers, so that the volcanic rock nanoparticles are more firmly attached to the fibers, thereby enhancing their performance and making the fabric less likely to deform during long-term use, thereby achieving a stable heating, heat, breathability and warmth-keeping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the production equipment in Example 4 of the present invention;

[0026] Figure 2 It is a schematic diagram of the immersion spray assembly of the production equipment in Example 4 of the present invention;

[0027] Figure 3 It is a schematic diagram of the hot and cold air rollers of the production equipment in Example 4 of the present invention.

[0028] In the figure: 1. unwinding roller; 2. immersion spray assembly; 21. liquid storage tank; 22. liquid storage tank; 23. spray gun; 24. hot air roller; 25. cold air roller; 26. guide roller; 27. lifting rail; 28. ultrasonic generator; 29. ​​adjusting roller group; 210. automatic roller clamp; 3. drying box; 4. winding roller. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Example 1

[0031] The volcanic rock heating fabric in this embodiment is prepared by the following steps:

[0032] Step 1: Preparation of volcanic rock nanoparticles;

[0033] (1) Carbonizing the volcanic rock at high temperature to obtain a powder, and then grinding it into volcanic rock particles with a particle size of 5-10 nm;

[0034] (2) mixing nano-silica gel balls with a particle size of 10-20 nm and volcanic rock particles in ethanol at a mass ratio of 1:2, heating at 140-160° C. for 1-2 h, and washing with deionized water by centrifugation for at least 3 times to obtain a precipitate;

[0035] (3) Mixing montmorillonite with an ethanol solution at a ratio of 1:2 (v / v), adding dodecyl quaternary ammonium salt to the mixed solution to obtain a mixture, adding a silane coupling agent KH-550 after stirring, and then adding an appropriate amount of ethanol to form a mixture, adjusting the pH to acidic, stirring and heating to 70° C. for 1-2 hours, cooling and centrifuging to obtain a montmorillonite suspension, mixing the precipitate in step (2) with the montmorillonite suspension, stirring at 55-70° C. for 1-2 hours, filtering with a filter membrane, collecting the solid on the filter membrane, and drying to obtain volcanic rock nanoparticles.

[0036] Step 2: Prepare the heating layer, heating layer and flannel layer

[0037] (1) using cotton-like polyester fiber and cotton-spandex core-spun fiber to weave a flannel layer through a weaving machine;

[0038] (2) volcanic rock nanoparticles, wax oil, emulsifier and deionized water are mixed, and subjected to magnetic stirring and ultrasonic stirring to obtain a glue solution for use; the hygroscopic fiber is immersed in a titanate chelate catalyst for 20-30 minutes, and then is taken out and placed in a hot air furnace for continuous air heat treatment at a temperature range of 200-220° C. for 20-30 minutes, and then the hygroscopic fiber is placed in a production device to be immersed in the volcanic rock nanoparticle glue solution, and vacuum dried; the treated hygroscopic fiber and volcanic rock fiber are woven into a temperature-raising and heating layer by a weaving machine, wherein the hygroscopic fiber and the volcanic rock fiber are 70% hygroscopic fiber and 30% volcanic rock fiber;

[0039] (3) Using production equipment, spray volcanic rock nanoparticle glue on one side of the heating layer, vacuum dry it, and obtain the heating layer.

[0040] Step 3: prepare volcanic rock heating fabric, composite the side of the heating layer with the heating supplement layer with the flannel layer through double-point coating, and dry it to obtain the volcanic rock heating fabric.

[0041] Example 2

[0042] In order to verify the performance effect of the volcanic rock nanoparticles prepared by the present invention, the volcanic rock nanoparticles in Example 1 were replaced by particles 1 to 5 to prepare fabrics, and the process was as follows:

[0043] Step 1: Prepare the heating layer, heating layer and flannel layer

[0044] (1) using cotton-like polyester fiber and cotton-spandex core-spun fiber to weave a flannel layer through a weaving machine;

[0045] (2) Particle 1 (particle 2, particle 3, particle 4, particle 5), wax oil, emulsifier and deionized water are mixed, and subjected to magnetic stirring and ultrasonic stirring to obtain a glue solution for use; the hygroscopic fiber is immersed in a titanate chelate catalyst for 20-30 minutes, and then is taken out and placed in a hot air furnace for continuous air heat treatment at a temperature range of 200-220° C. for 20-30 minutes, and then the hygroscopic fiber is placed in a production device to be immersed in the volcanic rock nanoparticle glue solution, and vacuum dried; the treated hygroscopic fiber and volcanic rock fiber are woven into a temperature-raising and heating layer by a weaving machine, wherein the hygroscopic fiber and the volcanic rock fiber are 70% hygroscopic fiber and 30% volcanic rock fiber;

[0046] (3) Using production equipment, spray glue on one side of the heating layer, and vacuum dry it to obtain a heating layer.

[0047] Step 2: prepare volcanic rock heating fabric, composite the heating layer with the heating supplement layer on one side with the flannel layer through double-point coating, and dry it to obtain the volcanic rock heating fabric.

[0048] Among them, particles 1 to 5 were prepared according to the following method and compared with volcanic rock nanoparticles.

[0049] A. Particle 1

[0050] (1) Carbonizing the volcanic rock at high temperature to obtain a powder, and then grinding it into volcanic rock particles with a particle size of 5-10 nm;

[0051] (2) mixing corn straw carbon nanoparticles with a particle size of 10-20 nm with volcanic rock particles in ethanol at a mass ratio of 1:1, heating at 140-160° C. for 1-2 h, and washing with deionized water by centrifugation for at least 3 times to obtain a precipitate;

[0052] (3) Mixing montmorillonite with ethanol solution at a ratio of 1:2 (v / v), adding dodecyl quaternary ammonium salt to the mixed solution to obtain a mixture, adding silane coupling agent KH-550 after stirring, and then adding an appropriate amount of ethanol to form a mixture, adjusting the pH to acidic, stirring and heating to 70°C for 1-2 hours, cooling and centrifuging to obtain a montmorillonite suspension, mixing the precipitate in step (2) with the montmorillonite suspension, stirring at 55-70°C for 1-2 hours, filtering with a filter membrane, collecting the solid on the filter membrane, and drying to obtain particle one.

[0053] B. Particle 2

[0054] (1) Carbonizing the volcanic rock at high temperature to obtain a powder, and then grinding it into volcanic rock particles with a particle size of 5-10 nm;

[0055] (2) Mix montmorillonite and ethanol solution at a ratio of 1:2 (v / v), add dodecyl quaternary ammonium salt to the mixed solution to obtain a mixture, add silane coupling agent KH-550 after stirring, and then add an appropriate amount of ethanol to form a mixture, adjust the pH to acidic, stir and heat to 70°C for 1-2 hours, cool and centrifuge to obtain a montmorillonite suspension, mix the volcanic rock particles and the montmorillonite suspension, stir at 55-70°C for 1-2 hours, filter with a filter membrane, collect the solid on the filter membrane, and dry to obtain particle 2.

[0056] C. Particle three

[0057] (1) Carbonizing the volcanic rock at high temperature to obtain a powder, and then grinding it into volcanic rock particles with a particle size of 5-10 nm;

[0058] (2) mixing nano-silica gel balls with a particle size of 10-20 nm and volcanic rock particles in ethanol at a mass ratio of 1:2, heating at 140-160° C. for 1-2 h, and washing with deionized water by centrifugation for at least 3 times to obtain a precipitate;

[0059] (3) Mixing the nano silver antibacterial agent with the precipitate in step (2), stirring at 55-70° C. for 1-2 h, filtering with a filter membrane, collecting the solid on the filter membrane, and drying to obtain particle three.

[0060] D. Particle 4

[0061] (1) Carbonizing the volcanic rock at high temperature to obtain a powder, and then grinding it into volcanic rock particles with a particle size of 5-10 nm;

[0062] (2) Nano-silica gel balls with a particle size of 10-20 nm and volcanic rock particles are mixed in ethanol at a mass ratio of 1:2, heated at 140-160° C. for 1-2 h, washed by centrifugation with deionized water for at least 3 times, and dried to obtain particle 4.

[0063] E. Particle 5

[0064] The volcanic rock is subjected to high temperature carbonization to obtain powder, which is then ground into volcanic rock particles with a particle size of 5-10 nm, and the powder is mixed with corn straw carbon nanoparticles to obtain particle five.

[0065] In order to verify the effect of volcanic rock particles prepared by different methods on the performance of fabrics, the fabrics of Example 1 and Example 2 (A, B, C, D, E) were tested using the following method.

[0066] 1. According to the Chinese national standard GB / T 29866-2013 "Test Method for Hygroscopic Heat Performance of Textiles", the fabric samples of Example 1 and Example 2 (A, B, C, D, E) were tested for hygroscopic heat performance. The specific hygroscopic heat performance results are shown in Table 1①. The above fabric samples were kept under a closed condition of a temperature of 80°C and 90%RH for 30 days, and then the above test was performed. The test results are shown in Table 1②.

[0067] Table 1 Hygroscopic heat generation test results

[0068]

[0069] Note: The above data are the average values ​​of n groups (n≥10) of independent experiments, *p<0.05.

[0070] It can be seen from Table 1 that the volcanic rock heating fabric prepared by the present invention has excellent heating, heat storage, moisture retention and air permeability performance. From the comparison of E in Example 1 and Example 2, it can be seen that the functional particles E prepared by using traditional biomass carbon nanoparticles and volcanic rock particles have poorer heating, heat retention and air permeability than the present invention. From the comparison of A and B in Example 1 and Example 2, and the comparison of C and D in Example 1 and Example 2, the present invention uses volcanic rock particles, nano silica gel balls and montmorillonite, which are particularly significant for the moisture retention and hygroscopicity of the fabric.

[0071] 2. According to the Chinese national standard GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method", the fabric samples of Example 1 and Example 2 (A, B, C, D, E) were tested for antibacterial properties. The bacterial species include Escherichia coli ATCC25922 and Staphylococcus aureus ATCC6538. The specific test results of the antibacterial rate are shown in Table 2①. The above fabric samples were kept under a closed condition of 80°C and 90%RH for 30 days, and then the above test was performed. The test results are shown in Table 2②.

[0072] Table 2 Test results of antibacterial rate

[0073]

[0074] Note: The above data are the average values ​​of n groups (n≥10) of independent experiments, *p<0.05.

[0075] It can be seen from Table 2 that the volcanic rock warming fabric prepared by the present invention has excellent antibacterial properties. From the comparison of E in Example 1 and Example 2, it can be seen that the functional particles E prepared by using traditional biomass carbon nanoparticles and volcanic rock particles have far worse antibacterial properties than the present invention. From the comparison of A and B in Example 1 and Example 2, it is found that the use of biomass carbon nanoparticles instead of nano-silica gel balls has little effect on the antibacterial properties of the fabric. From the comparison of C and D in Example 1 and Example 2, it can be clearly seen that the present invention uses montmorillonite, which not only enhances the moisture retention and air permeability of the fabric, but also increases its antibacterial properties, especially the synergy of volcanic rock particles, nano-silica gel balls and montmorillonite, which has a particularly significant effect on the antibacterial properties of the fabric.

[0076] 3. According to the Chinese national standard GB / T 3923.1-2013 "Textiles-Fabric Tensile Properties", the fabric samples of Example 1 and Example 2 (A, B, C, D, E) were subjected to tensile tests. The specific tensile elongation and tensile strength are shown in Table 3①. The above fabric samples were kept under a closed condition of 80°C and 90%RH for 30 days, and then the above test was performed. The test results are shown in Table 3②.

[0077] Table 3 Tensile test results

[0078]

[0079] Note: The above data are the average values ​​of n groups (n≥10) of independent experiments, *p<0.05.

[0080] It can be seen from Table 3 that the volcanic rock warming fabric prepared by the present invention has good tensile properties and excellent elastic properties. From the comparison of E in Example 1 and Example 2, it can be seen that the functional particles E prepared by using traditional biomass carbon nanoparticles and volcanic rock particles have much worse tensile properties than the present invention. From the comparison of C and D in Example 1 and Example 2, it is found that the use of antibacterial agents to replace montmorillonite has little effect on the tensile properties of the fabric. From the comparison of A and B in Example 1 and Example 2, it can be clearly seen that the present invention uses nano-silica gel balls, which not only enhances the tensile properties of the fabric, but also increases the durability. In particular, the synergy of volcanic rock particles, nano-silica gel balls and montmorillonite has a particularly significant effect on the tensile properties of the fabric.

[0081] Example 3

[0082] In order to verify the effects of different treatment methods on volcanic rock heating fabrics, the following four preparation methods were used to prepare the fabrics. The process is as follows:

[0083] A. Preparation method 1

[0084] Step 1: Preparation of volcanic rock nanoparticles (same as Example 1)

[0085] Step 2: Prepare the heating layer, heating layer and flannel layer

[0086] (1) using cotton-like polyester fiber and cotton-spandex core-spun fiber to weave a flannel layer through a weaving machine;

[0087] (2) mixing volcanic rock nanoparticles, wax oil, emulsifier and deionized water, and subjecting them to magnetic stirring and ultrasonic stirring to obtain a glue solution for use; placing the hygroscopic fiber in an ultraviolet radiation box, irradiating it with ultraviolet radiation for a period of time, and then placing the hygroscopic fiber in a production device to be impregnated with the volcanic rock nanoparticle glue solution, and vacuum drying; weaving the treated hygroscopic fiber and volcanic rock fiber into a temperature-raising and heating layer through a weaving machine, wherein the hygroscopic fiber comprises 70% of the hygroscopic fiber and 30% of the volcanic rock fiber;

[0088] (3) Using production equipment, spray volcanic rock nanoparticle glue on one side of the heating layer, vacuum dry it, and obtain the heating layer.

[0089] Step 3: prepare volcanic rock heating fabric, composite the side of the heating layer with the heating supplement layer with the flannel layer through double-point coating, and dry it to obtain the volcanic rock heating fabric.

[0090] B. Preparation Method 2

[0091] Step 1: preparing volcanic rock nanoparticles (same as Example 1);

[0092] Step 2: Prepare the heating layer, heating layer and flannel layer

[0093] (1) using cotton-like polyester fiber and cotton-spandex core-spun fiber to weave a flannel layer through a weaving machine;

[0094] (2) mixing volcanic rock nanoparticles, wax oil, emulsifier and deionized water, and subjecting them to magnetic stirring and ultrasonic stirring to obtain a glue solution for use; immersing the hygroscopic fiber in a titanate chelate catalyst for 20-30 minutes, taking it out and drying it, and then placing the hygroscopic fiber in a production device to immerse it in the volcanic rock nanoparticle glue solution, and vacuum drying it; weaving the treated hygroscopic fiber and volcanic rock fiber into a temperature-raising and heating layer through a weaving machine, wherein the hygroscopic fiber and the volcanic rock fiber are 70% hygroscopic fiber and 30% volcanic rock fiber.

[0095] (3) Using production equipment, spray volcanic rock nanoparticle glue on one side of the heating layer, vacuum dry it, and obtain the heating layer.

[0096] Step 3: Prepare volcanic rock heating fabric (same as Example 1).

[0097] C. Preparation method 3

[0098] Step 1: preparing volcanic rock nanoparticles (same as Example 1);

[0099] Step 2: Prepare the heating layer, heating layer and flannel layer

[0100] (1) using cotton-like polyester fiber and cotton-spandex core-spun fiber to weave a flannel layer through a weaving machine;

[0101] (2) volcanic rock nanoparticles, wax oil, emulsifier and deionized water are mixed, and subjected to magnetic stirring and ultrasonic stirring to obtain a glue solution for use; the hygroscopic fiber is placed in a hot air furnace, and subjected to continuous air heat treatment at a temperature range of 200-220° C. for a treatment time of 20-30 minutes, and then the hygroscopic fiber is placed in a production device to be impregnated with the volcanic rock nanoparticle glue solution, and vacuum dried; the treated hygroscopic fiber and volcanic rock fiber are woven into a temperature-raising and heating layer by a weaving machine, wherein the hygroscopic fiber and the volcanic rock fiber are 70% hygroscopic fiber and 30% volcanic rock fiber;

[0102] (3) Using production equipment, spray volcanic rock nanoparticle glue on one side of the heating layer, vacuum dry it, and obtain the heating layer.

[0103] Step 3: Prepare volcanic rock heating fabric (same as Example 1).

[0104] In order to verify the effects of different treatment methods on the volcanic rock heating fabric, the fabrics of Example 1 and Example 3 (A, B, C) were tested using the following method.

[0105] 1. According to the Chinese national standards GB / T 8628-2013 "Textiles - Preparation, marking and measurement of fabric specimens and garments in tests for determination of dimensional changes", GB / T 8629-2013, GB / T 8630-2013 "Textiles - Determination of dimensional changes after washing and drying", and FZ / T 73020-2012 "Knitted thermal underwear", the fabric samples of Example 1 and Example 3 (A, B, C) were tested, and the test results are shown in Table 4.

[0106] 2. According to the Chinese national standard GB / T 3923.1-2013 "Textiles - Fabric Tensile Properties", the fabric samples of Example 1 and Example 3 (A, B, C) were subjected to tensile tests. The specific tensile elongation is shown in Table 4.

[0107] Table 4 Deformation performance test results

[0108]

[0109] Note: The above data are the average values ​​of n groups (n≥10) of independent experiments, *p<0.05.

[0110] It can be seen from Table 4 that the volcanic rock heating fabric prepared by the present invention has excellent anti-deformation performance. From the comparison of A, B, and C in Example 1 and Example 3, it can be seen that the present invention uses a catalyst to increase the activation sites of the hygroscopic fiber and combs the hygroscopic fiber through air heat treatment, which can be qualitatively and significantly affect the anti-deformation performance of the fabric.

[0111] Example 4

[0112] like Figure 1-2 As shown, the present invention also provides a production equipment for the dipping and spraying of volcanic rock nanoparticle glue, the production equipment is composed of a unwinding roller 1, a dipping and spraying assembly 2, a drying box 3 and a winding roller 4 in sequence, the dipping and spraying assembly 2 includes a liquid storage tank 21, a liquid storage box 22 located above the liquid storage tank 21, two rows of spray guns 23 located at the lower end of the liquid storage tank 22, an ultrasonic generator 28 located inside the liquid storage tank 21, a hot air roller 24 located on the feeding side of the liquid storage tank 21, and a cold air roller 25 located on the discharging side of the liquid storage tank 21. Guide rollers 26 and an adjusting roller group 29 are provided on both sides of the feeding and discharging of the liquid storage tank 21, and lifting rails 27 for lifting and lowering the adjusting roller group 29 are provided at both ends of the inner wall of the liquid storage tank 21. An automatic roller clamp 210 is also provided on the inner wall of the liquid storage tank 21, and the automatic roller clamp 210 is parallel to the highest point of the lifting rail 27.

[0113] like Figure 3 As shown, the hot air roller 24 and the cold air roller 25 have the same structure, including a hollow roller body, one end of the roller body is provided with a transmission gear 243 meshing with an outer driving device, and the other end of the roller body is provided with an air inlet 241, and the air inlet 241 is respectively connected to the hot air fan duct and the cold air fan duct through a rotatable connector, and the roller body is provided with air outlet holes 242, and hot air or cold air is discharged from the air outlet holes 242 to act on the fabric or fiber. The air outlet holes 242 are distributed in a spiral on the roller body, and the uniformity of the air flow is guaranteed while reducing the number of the air outlet holes 242, so as to evenly blow the fabric, and preheat or precool the fabric or hygroscopic fiber.

[0114] In the preparation method of the volcanic rock fabric described in the present invention, in the processes (2) and (3) of preparing the temperature-raising and heating layer, the heat-compensating layer and the flannel layer in step 2, the volcanic rock nanoparticles need to be made into a glue solution, which is impregnated into the hygroscopic fiber and sprayed onto the temperature-raising and heating layer to form the heat-compensating layer. The specific preparation process of the glue solution is: the volcanic rock nanoparticles, wax oil, emulsifier and deionized water are mixed, and the glue solution is obtained by magnetic stirring and ultrasonic stirring.

[0115] During use, the moisture-absorbing fiber or the heating and heating layer is placed on the unwinding roller 1, and then passes through the soaking and spraying assembly 2, the drying box 3, and then collected by the winding roller 4;

[0116] Specifically, when processing the hygroscopic fiber, the adjusting roller group 29 is located at the bottom h1 of the lifting rail 27, and the hygroscopic fiber passes through the upper and lower groups of hot air rollers 24, and then passes through the guide roller 26 downward through the middle of the two groups of rollers of the adjusting roller group 29 and passes through the liquid storage tank 21. The liquid storage tank 21 contains volcanic rock nanoparticle glue. The glue in the liquid storage tank 21 can be replenished by a spray gun 23, and then can pass through the middle of the two groups of rollers of the adjusting roller group 29 on the other side and then be guided to the cold air roller 25 by the guide roller 26, and the ultrasonic generator 28 is started. The hygroscopic fiber is soaked with glue in the process of passing through the liquid storage tank 21. Since the glue contains wax oil, it can be quickly solidified when passing through the cold air roller 25, reducing the loss of volcanic rock nanoparticles. Then, it passes through the drying box 3, and when vacuum drying is performed, the wax oil melts and evaporates, and is collected and recycled by another device. Then, the volcanic rock nanoparticles are firmly attached to the hygroscopic fiber during drying.

[0117] When spraying volcanic rock nanoparticle glue on one side of the heating layer, the adjusting roller group 29 is located at the highest h2 of the lifting rail 27, and the heating layer fabric passes through the upper and lower groups of hot air rollers 24, and then passes through the middle of the two groups of rollers of the adjusting roller group 29 to the middle of the two groups of rollers of the adjusting roller group 29 on the other side, and then passes through the cold air roller 25, wherein the height of the closest hot air roller 24 and the cold air roller 25 is lower than the height of the adjusting roller group 29, which is convenient for the tensioning of the fabric, and the automatic roller clamp 210 is started to clamp the two sides of the fabric, and the spray gun 23 is started to spray the volcanic rock nanoparticle glue on the fabric. The first group of spray guns 23 is the main spraying tool, and the second group is the auxiliary spraying tool, which cooperates with the image recognition system at the lower end of the liquid storage tank 22. When there is an unsprayed area in the passed fabric, the fabric is sprayed again. After spraying, the surface of the heating layer is heated to form a reinforcement layer. Since the glue contains wax oil, it can be quickly solidified when passing through the cold air roller 25, reducing the loss of volcanic rock nanoparticles. Then, it passes through the drying box 3 and is vacuum dried. The wax oil melts and evaporates, and is collected and recycled by another device. Then, the volcanic rock nanoparticles are firmly attached to the heated heating layer during drying.

[0118] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for preparing a volcanic rock heating fabric, characterized in that: The volcanic rock heating fabric comprises a heating layer and a flannel layer which are integrated into a structure by double-point coating, the heating layer is blended by volcanic rock fiber and hygroscopic fiber, the surface of the hygroscopic fiber is loaded with volcanic rock nanoparticles, and a heat supplement layer composed of volcanic rock nanoparticles is arranged between the heating layer and the flannel layer; The preparation method comprises the following steps: (1) Carbonizing volcanic rock to obtain powder, then grinding it to obtain volcanic rock particles with a particle size of 5-10 nm, mixing nano-silica gel balls and volcanic rock particles in ethanol, heating them, centrifuging and washing them to obtain a precipitate, and then mixing the precipitate with a montmorillonite suspension, heating and stirring them, and filtering them to obtain volcanic rock nanoparticles; The specific preparation process of nano silica gel spheres is as follows: adding a silanization agent to a silica gel aqueous solution, reacting the silanization agent with silica gel through high-speed stirring or ultrasound, and removing the organic solvent to obtain the separated functionalized nano silica gel spheres through ultracentrifugation or spray drying. The particle size of the nano silica gel spheres is 5-1000nm; The specific preparation process of the montmorillonite suspension is as follows: montmorillonite is mixed with an ethanol solution, dodecyl quaternary ammonium salt is added to the solution to obtain a mixture, a silane coupling agent is added after stirring, and then ethanol is added to form a mixture, the pH is adjusted to acidic, and the montmorillonite suspension is obtained after heating, cooling and centrifugation; (2) After the hygroscopic fiber is treated with a catalyst and continuously treated with hot air, it is then impregnated with a volcanic rock nanoparticle glue solution and vacuum dried; the catalyst treatment specifically includes immersing the hygroscopic fiber in a titanate chelate catalyst for 20-30 minutes; the continuous hot air heat treatment specifically includes placing the hygroscopic fiber treated with the catalyst in a hot air furnace and performing continuous air heat treatment at a temperature range of 200-220°C for 20-30 minutes; (3) After weaving the hygroscopic fibers and volcanic rock fibers treated in step (2) into a heating layer, spraying volcanic rock nanoparticle glue on one side of the heating layer, vacuum drying, and obtaining a heat supplement layer; the volcanic rock nanoparticle glue is prepared by mixing volcanic rock nanoparticles, wax oil, emulsifier and deionized water, and subjecting the mixture to magnetic stirring and ultrasonic stirring to obtain the glue; (4) The side of the heating layer provided with the supplementary heat layer is composited with the flannel layer through double-point coating, and then dried to obtain the volcanic rock heating fabric.

2. The method for preparing a volcanic rock heating fabric according to claim 1, characterized in that: The flannel layer is obtained by weaving cotton-like polyester fibers and cotton-spandex core-spun fibers.

3. The method for preparing a volcanic rock heating fabric according to claim 1, characterized in that: The equipment for dipping and spraying the volcanic rock nanoparticle glue in steps (2) and (3) is composed of an unwinding roller, a dipping and spraying assembly, a drying box and a winding roller in sequence. The dipping and spraying assembly includes a liquid storage tank, a liquid storage box located above the liquid storage tank, two rows of spray guns located at the lower end of the liquid storage box, an ultrasonic generator located inside the liquid storage tank, a hot air roller located on the feeding side of the liquid storage tank, and a cold air roller located on the discharging side of the liquid storage tank. Guide rollers and an adjusting roller group are provided on both sides of the feeding and discharging of the liquid storage tank. Lifting rails for lifting and lowering the adjusting roller group are provided at both ends of the inner wall of the liquid storage tank. An automatic roller clamp is also provided on the inner wall of the liquid storage tank, and the automatic roller clamp is parallel to the highest point of the lifting rail.

4. The method for preparing a volcanic rock heating fabric according to claim 3, characterized in that: The hot air roller and the cold air roller have the same structure, including a hollow roller body, one end of the roller body is provided with a transmission gear meshing with an outer driving device, the other end of the roller body is provided with an air inlet, the air inlet is connected to the hot air fan duct and the cold air fan duct respectively through a rotatable connector, the roller body is provided with air outlet holes, hot air or cold air is discharged from the air outlet holes, which are used to preheat or cool the fabric or fiber, and the air outlet holes are distributed in a spiral shape on the roller body.

5. A volcanic rock heating fabric, characterized in that: The method is prepared according to any one of claims 1 to 4.

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