Heat preservation and insulation curtain and preparation method thereof

Abstract

The invention belongs to the technical field of curtains, and particularly relates to a heat preservation and insulation curtain and a preparation method thereof.The heat preservation and insulation curtain comprises base cloth and a heat insulation reflecting layer, a gel connecting layer is arranged between the base cloth and the heat insulation reflecting layer, and the preparation method of the curtain is provided. The problem that an existing heat preservation and insulation curtain is common in heat preservation effect is solved, the silicon dioxide aerogel and the hollow glass beads are used for forming a reflecting layer of a silica system, light is scattered by means of the light transmittance and refractivity of the hollow glass beads and the silicon dioxide aerogel, and the dazzling problem caused by light reflection is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of curtains, and in particular relates to a thermal insulation curtain and a preparation method thereof. Background Art

[0002] With the continuous advancement of technology and the development of environmentally friendly and energy-saving materials, functional curtains have experienced rapid growth. Thermal insulation curtains, a representative example of functional curtains, offer excellent insulation, reflecting most of the sun's radiation while also preventing heat loss. However, current thermal insulation curtains simply utilize a reflective coating on the curtain base fabric, resulting in limited insulation and heat preservation, making it difficult to achieve excellent results. Summary of the Invention

[0003] In response to the problems in the prior art, the present invention provides a thermal insulation curtain that solves the problem of the general thermal insulation effect of the existing thermal insulation curtain. Silica aerogel and hollow glass microspheres are used to form a reflective layer of a silicon-oxygen system, and the light transmittance and refractive properties of the hollow glass microspheres and silica aerogel are used to scatter light, thereby reducing the glare problem caused by light reflection.

[0004] In order to achieve the above technical objectives, the technical solution of the present invention is: A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer, wherein a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

[0005] The base fabric is made of polyester fabric that has been subjected to heat conduction treatment. The polyester fabric itself has good mechanical strength, good stability and light resistance. Adding alumina to the polyester fabric improves the surface thermal conductivity of the polyester fabric, ensures the stability of surface heat, prevents local stability increase, and helps heat rebound and flow; the preparation method of the base cloth includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 1-2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 20-25 parts of nano-aluminum oxide, 2-5 parts of masterbatch, and 90-100 parts of polyethylene terephthalate, the masterbatch is one of magenta masterbatch, cyan masterbatch, and yellow masterbatch, the stirring speed of the blending is 100-300r / min, the temperature of the low-temperature grinding is 4-10°C, and the grinding pressure is 0.5-0.7MPa. This step uses grinding to refine the raw materials, pulverize the raw materials and improve the full mixing of the raw materials to obtain a homogeneous a2, adding the mixed fine powder into the extruder for melt extrusion, and obtaining the polyester fabric after high-temperature spinning and weaving, wherein the temperature of the melt extrusion is 260-270°C and the temperature of the melt spinning is 280-290°C; in this step, the aluminum oxide is dispersed in the polyester fiber by electrostatic spinning and the polyester fabric is weaved; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, and then soaking it in an aluminum isopropylate solution, and drying it after standing to obtain the thermally conductive modified polyester The polyester fabric is prepared by infiltration of a sodium carbonate solution having a mass ratio of 6 parts sodium carbonate, 2 parts phosphoric acid, and 15 parts water. The vacuum degree of the vacuum infiltration is 100-200 Pa, and the temperature is 70-80°C. The aluminum isopropoxide solution has a mass ratio of 5-9 parts aluminum isopropoxide and 50-60 parts ethanol. The static atmosphere is a mixed atmosphere of nitrogen and water vapor with a nitrogen to water vapor volume ratio of 10:1, the temperature is 20-30°C, and the drying temperature is 200-240°C. This step utilizes nano-alumina as a dopant to be uniformly dispersed within the polyester fibers. The polyester fabric is fluffed by vacuum infiltration of the polyester. A surface heat conduction network is formed through low-concentration liquid phase deposition and in-situ hydrolysis and polycondensation of aluminum isopropoxide, thereby thermally conductively improving the surface of the polyester fabric.

[0006] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: Place the base fabric in an ethanol-water solution and rapidly stir for 20-30 minutes, then freeze-dry to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 300-500 r / min, and the freeze-drying temperature is -20°C; this step uses the ethanol-water solution as a washing liquid, combined with the fluidity of rapid stirring, to remove impurities on the surface of the base fabric, and combines with freeze drying to form in-situ drying, while maintaining the state of the base fabric itself, ensuring the surface exposure of the polyester base fabric; Step 2: Add silica aerogel and ethyl cellulose to ethanol and disperse them to form a first coating solution, then spray the first coating solution on the surface of the base fabric and dry it to obtain a coating layer; the mass ratio of the silica aerogel to the ethyl cellulose is 7-9:1, and the concentration of the silica aerogel in the ethanol is 300-500 g / L, the stirring speed of the dispersion is 500-700 r / min, the spraying amount is 4-6 mL / min, and the drying temperature is 240-250°C; this step utilizes the dispersibility of the silica aerogel and the solubility of the ethyl cellulose in ethanol to form a first coating solution containing homogeneously dispersed silica aerogel, and then spray the first coating solution on the surface of the base fabric, utilizing the adhesion of the ethyl cellulose itself to deposit the aerogel on the surface of the base fabric to obtain a coated polyester fabric; Step 3: quickly immerse the hollow glass microspheres in an alkaline solution, remove them, and allow them to stand at a constant temperature before washing to obtain surface-modified microspheres. Epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water are then added and stirred evenly. The solution is vacuum degassed to obtain a second coating solution, wherein the alkaline solution is a sodium hydroxide solution with a pH of 11, the immersion time is 2-3 seconds, and the temperature of the constant temperature standing is 120-150° C. The mass ratio of the second coating solution is 7-10 parts of surface-modified microspheres, 30-40 parts of epoxy resin, 0.5-0.9 parts of bisaminopropyl polydimethylsiloxane, 2-4 parts of glycidyl ether, and 30-40 parts of water. The epoxy equivalent weight of the epoxy resin is 200-230 g / eq. This step activates the surface of the hollow glass microspheres by surface alkalization, thereby solving the surface inertness of the hollow glass microspheres and improving the stability and connectivity of the hollow glass microspheres in the heat-insulating reflective layer. Step 4: screen-printing the second coating liquid on the surface of the coating layer, and then baking and pressing to obtain a heat-insulating curtain, wherein the baking temperature is 120-130°C.

[0007] It can be seen from the above description that the present invention has the following advantages: 1. The present invention solves the problem of the general thermal insulation effect of existing thermal insulation curtains. It uses silica aerogel and hollow glass microspheres to form a reflective layer of a silicon-oxygen system, and uses the light transmittance and refractive properties of hollow glass microspheres and silica aerogel to scatter light, thereby reducing the glare caused by light reflection.

[0008] 2. The present invention uses high temperature to soften polyester, promotes the softening and penetration of silica aerogel on the surface of polyester fibers, and directly decomposes ethyl cellulose. Combined with the printing viscosity of the subsequent thermal insulation reflective layer, the pores generated by the aerogel and ethyl cellulose form an inner cavity structure. The inner cavity is mainly based on a silica-based structure and exhibits excellent thermal insulation. At the same time, the inner cavity brings a silicon-oxygen refractive system and a cavity refractive system, which brings excellent light rebound and light scattering.

[0009] 3. The present invention utilizes alkalization treatment on the surface of hollow glass microspheres, combined with drying after rapid immersion, to activate the hollow glass microspheres while ensuring the structural stability of the hollow glass microspheres, greatly improving the light reflection effect and temperature isolation effect of the entire thermal insulation reflective layer. DETAILED DESCRIPTION

[0010] The present invention is described in detail with reference to the embodiments, but no limitation is imposed on the claims of the present invention. Example 1

[0011] A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer, wherein a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

[0012] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 1 hour to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 25 parts of nano-aluminum oxide, 5 parts of masterbatch, and 100 parts of polyethylene terephthalate, the masterbatch is magenta masterbatch, the stirring speed of the blending is 100r / min, the temperature of the low-temperature grinding is 4°C, and the grinding pressure is 0.5MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining polyester fabric after high-temperature spinning and weaving, and the melt The extrusion temperature is 260°C, and the melt spinning temperature is 280°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric. The mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water. The vacuum degree of the vacuum infiltration is 100 Pa and the temperature is 70°C; the mass ratio of the aluminum isopropoxide solution is: 9 parts of aluminum isopropoxide and 50-60 parts of ethanol. The standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1. The temperature is 20°C, and the drying temperature is 200°C.

[0013] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: placing the base fabric in an ethanol-water solution and rapidly stirring it for 20 minutes, and then freeze-drying it to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 300 r / min, and the freeze-drying temperature is -20°C; Step 2: adding silica aerogel and ethyl cellulose to ethanol to disperse to form a first coating solution, then spraying the first coating solution on the surface of the base fabric and drying to obtain a coating layer; the mass ratio of the silica aerogel to the ethyl cellulose is 7:1, and the concentration of the silica aerogel in the ethanol is 300 g / L. The stirring speed of the dispersion is 500 r / min, the spraying amount is 4 mL / min, and the drying temperature is 240°C; Step 3: quickly immerse the hollow glass microspheres in an alkaline solution, remove them, and wash them after standing at a constant temperature to obtain surface-modified microspheres. Then, epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water are added and stirred evenly. The second coating solution is obtained by vacuum degassing. The alkaline solution is a sodium hydroxide solution with a pH of 11. The immersion time is 2 seconds. The constant temperature standing temperature is 120° C. The mass ratio of the second coating solution is 10 parts of surface-modified microspheres, 40 parts of epoxy resin, 0.9 parts of bisaminopropyl polydimethylsiloxane, 4 parts of glycidyl ether, and 40 parts of water. The epoxy equivalent weight of the epoxy resin is 200 g / eq. Step 4: screen-printing the second coating liquid on the surface of the coating layer, and then baking and pressing to obtain a thermal insulation curtain, wherein the baking temperature is 120°C. Example 2

[0014] A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer, wherein a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

[0015] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 20 parts of nano-aluminum oxide, 2 parts of masterbatch, and 90 parts of polyethylene terephthalate, the masterbatch is cyan masterbatch, the stirring speed of the blending is 300r / min, the temperature of the low-temperature grinding is 10°C, and the grinding pressure is 0.7MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining the polyester fabric after high-temperature spinning and weaving. The temperature of the melt extrusion is 270°C, and the temperature of the melt spinning is 290°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric, the mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water, the vacuum degree of the vacuum infiltration is 200 Pa, and the temperature is 80°C; the mass ratio of the aluminum isopropoxide solution is: 5 parts of aluminum isopropoxide and 50 parts of ethanol, the standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1, the temperature is 30°C, and the drying temperature is 240°C.

[0016] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: Place the base fabric in an ethanol-water solution and rapidly stir for 30 minutes, then freeze-dry to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 500 r / min, and the freeze-drying temperature is -20°C; Step 2: adding silica aerogel and ethyl cellulose to ethanol to disperse to form a first coating solution, then spraying the first coating solution on the surface of the base fabric and drying to obtain a coating layer; the mass ratio of the silica aerogel to the ethyl cellulose is 9:1, and the concentration of the silica aerogel in the ethanol is 500 g / L, the stirring speed of the dispersion is 700 r / min, the spraying amount is 6 mL / min, and the drying temperature is 250°C; Step 3: quickly immerse the hollow glass microspheres in an alkaline solution, remove them, and place them at a constant temperature for standing, then wash them to obtain surface-modified microspheres, then add epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water, stir evenly, and vacuum degassing to obtain a second coating solution, wherein the alkaline solution is a sodium hydroxide solution with a pH of 11, the immersion time is 3 seconds, and the constant temperature for standing is 150° C. The mass ratio of the second coating solution is 7 parts of surface-modified microspheres, 30 parts of epoxy resin, 0.5 parts of bisaminopropyl polydimethylsiloxane, 2 parts of glycidyl ether, and 30 parts of water, and the epoxy equivalent weight of the epoxy resin is 200-230 g / eq; Step 4: screen-printing the second coating liquid on the surface of the coating layer, and then baking and pressing to obtain a heat-insulating curtain, wherein the baking temperature is 130°C. Example 3

[0017] A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer, wherein a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

[0018] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 23 parts of nano-aluminum oxide, 4 parts of masterbatch, and 95 parts of polyethylene terephthalate, the masterbatch is yellow masterbatch, the stirring speed of the blending is 200r / min, the temperature of the low-temperature grinding is 8°C, and the grinding pressure is 0.6MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining polyester fabric after high-temperature spinning and weaving. The temperature of melt extrusion is 265°C, and the temperature of melt spinning is 285°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, and then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric, the mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water, the vacuum degree of the vacuum infiltration is 150Pa, and the temperature is 75°C; the mass ratio of the aluminum isopropoxide solution is: 7 parts of aluminum isopropoxide and 55 parts of ethanol, the standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1, the temperature is 25°C, and the drying temperature is 220°C.

[0019] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: placing the base fabric in an ethanol-water solution and rapidly stirring it for 25 minutes, and then freeze-drying it to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 400 r / min, and the freeze-drying temperature is -20°C; Step 2: adding silica aerogel and ethyl cellulose to ethanol to disperse to form a first coating solution, then spraying the first coating solution on the surface of the base fabric and drying to obtain a coating layer; the mass ratio of the silica aerogel to the ethyl cellulose is 8:1, and the concentration of the silica aerogel in the ethanol is 400 g / L. The stirring speed of the dispersion is 600 r / min, the spraying amount is 5 mL / min, and the drying temperature is 245°C; Step 3: quickly immerse the hollow glass microspheres in an alkaline solution, remove them, and place them at a constant temperature for standing, then wash them to obtain surface-modified microspheres, then add epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water, stir evenly, and vacuum degassing to obtain a second coating solution, wherein the alkaline solution is a sodium hydroxide solution with a pH of 11, the immersion time is 3 seconds, and the constant temperature for standing is 140° C. The mass ratio of the second coating solution is 9 parts of surface-modified microspheres, 35 parts of epoxy resin, 0.7 parts of bisaminopropyl polydimethylsiloxane, 3 parts of glycidyl ether, and 38 parts of water, and the epoxy equivalent weight of the epoxy resin is 200-230 g / eq; Step 4: screen-printing the second coating liquid on the surface of the coating layer, and pressing the coating layer after baking to obtain a heat-insulating curtain, wherein the baking temperature is 125°C.

[0020] Comparative Example 1 A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer located on the surface of the base fabric.

[0021] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 23 parts of nano-aluminum oxide, 4 parts of masterbatch, and 95 parts of polyethylene terephthalate, the masterbatch is yellow masterbatch, the stirring speed of the blending is 200r / min, the temperature of the low-temperature grinding is 8°C, and the grinding pressure is 0.6MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining polyester fabric after high-temperature spinning and weaving. The temperature of melt extrusion is 265°C, and the temperature of melt spinning is 285°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, and then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric, the mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water, the vacuum degree of the vacuum infiltration is 150Pa, and the temperature is 75°C; the mass ratio of the aluminum isopropoxide solution is: 7 parts of aluminum isopropoxide and 55 parts of ethanol, the standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1, the temperature is 25°C, and the drying temperature is 220°C.

[0022] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: placing the base fabric in an ethanol-water solution and rapidly stirring it for 25 minutes, and then freeze-drying it to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 400 r / min, and the freeze-drying temperature is -20°C; Step 2: quickly immerse the hollow glass microspheres in an alkaline solution, remove them, and place them at a constant temperature for standing, then wash them to obtain surface-modified microspheres, then add epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water, stir evenly, and vacuum degassing to obtain a second coating solution, wherein the alkaline solution is a sodium hydroxide solution with a pH of 11, the immersion time is 3 seconds, and the constant temperature for standing is 140° C. The mass ratio of the second coating solution is 9 parts of surface-modified microspheres, 35 parts of epoxy resin, 0.7 parts of bisaminopropyl polydimethylsiloxane, 3 parts of glycidyl ether, and 38 parts of water, and the epoxy equivalent weight of the epoxy resin is 200-230 g / eq; Step 3: screen-printing the second coating liquid on the surface of the coating layer, and pressing the coating layer after baking to obtain a heat-insulating curtain, wherein the baking temperature is 125°C.

[0023] Comparative Example 2 A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer located on the surface of the base fabric.

[0024] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 23 parts of nano-aluminum oxide, 4 parts of masterbatch, and 95 parts of polyethylene terephthalate, the masterbatch is yellow masterbatch, the stirring speed of the blending is 200r / min, the temperature of the low-temperature grinding is 8°C, and the grinding pressure is 0.6MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining polyester fabric after high-temperature spinning and weaving. The temperature of melt extrusion is 265°C, and the temperature of melt spinning is 285°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, and then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric, the mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water, the vacuum degree of the vacuum infiltration is 150Pa, and the temperature is 75°C; the mass ratio of the aluminum isopropoxide solution is: 7 parts of aluminum isopropoxide and 55 parts of ethanol, the standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1, the temperature is 25°C, and the drying temperature is 220°C.

[0025] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: placing the base fabric in an ethanol-water solution and rapidly stirring it for 25 minutes, and then freeze-drying it to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 400 r / min, and the freeze-drying temperature is -20°C; Step 2: Evenly stir hollow glass microspheres, epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water, and obtain a second coating solution by vacuum degassing. The mass ratio of the second coating solution is: 9 parts hollow glass microspheres, 35 parts epoxy resin, 0.7 parts bisaminopropyl polydimethylsiloxane, 3 parts glycidyl ether, and 38 parts water. The epoxy equivalent weight of the epoxy resin is 200-230 g / eq. Step 3: screen-printing the second coating liquid on the surface of the coating layer, and pressing the coating layer after baking to obtain a heat-insulating curtain, wherein the baking temperature is 125°C.

[0026] Comparative Example 3 A heat-insulating curtain comprises a base fabric and a heat-insulating reflective layer, wherein a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

[0027] The base fabric is made of polyester fabric that has been subjected to thermal conductivity treatment, and the preparation method of the base fabric includes: a1, blending nano-aluminum oxide, masterbatch and polyethylene terephthalate, and low-temperature grinding for 2 hours to obtain a mixed fine powder; the mass ratio of the mixed fine powder is: 23 parts of nano-aluminum oxide, 4 parts of masterbatch, and 95 parts of polyethylene terephthalate, the masterbatch is yellow masterbatch, the stirring speed of the blending is 200r / min, the temperature of the low-temperature grinding is 8°C, and the grinding pressure is 0.6MPa; a2, adding the mixed fine powder into an extruder for melt extrusion, and obtaining polyester fabric after high-temperature spinning and weaving. The temperature of melt extrusion is 265°C, and the temperature of melt spinning is 285°C; a3, soaking the polyester fabric in a sodium carbonate solution for vacuum infiltration, and then soaking it in an aluminum isopropoxide solution, and drying it after standing to obtain a thermally conductive modified polyester fabric, the mass ratio of the sodium carbonate solution is: 6 parts of sodium carbonate, 2 parts of phosphoric acid, and 15 parts of water, the vacuum degree of the vacuum infiltration is 150Pa, and the temperature is 75°C; the mass ratio of the aluminum isopropoxide solution is: 7 parts of aluminum isopropoxide and 55 parts of ethanol, the standing atmosphere is a mixed atmosphere of nitrogen and water vapor, and the volume ratio of nitrogen to water vapor is 10:1, the temperature is 25°C, and the drying temperature is 220°C.

[0028] The method for preparing the thermal insulation curtain comprises the following steps: Step 1: placing the base fabric in an ethanol-water solution and rapidly stirring it for 25 minutes, and then freeze-drying it to obtain a clean base fabric, wherein the ethanol volume ratio of the ethanol-water solution is 60%, the rapid stirring speed is 400 r / min, and the freeze-drying temperature is -20°C; Step 2: Stir silica aerogel, epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether, and water, and obtain a second coating solution by vacuum degassing. The mass ratio of the second coating solution is 9 parts of silica aerogel, 35 parts of epoxy resin, 0.7 parts of bisaminopropyl polydimethylsiloxane, 3 parts of glycidyl ether, and 38 parts of water. The epoxy equivalent weight of the epoxy resin is 200-230 g / eq. Step 4: screen-printing the second coating liquid on the surface of the coating layer, and pressing the coating layer after baking to obtain a heat-insulating curtain, wherein the baking temperature is 125°C.

[0029] Performance testing The products of Examples 1-3 and Comparative Examples 1-3 were used as test samples for performance testing, and the results are as follows:

[0030] The above data demonstrates that Examples 1-3 exhibit excellent thermal insulation, which remains stable even after washing. Combined with the high reflective insulation of the hollow glass, these curtains demonstrate excellent thermal insulation properties. Furthermore, these curtains exhibit excellent mechanical properties. Comparative Examples 1 and 2 differ in the modification of the hollow glass. Initial and post-wash thermal insulation rates are similar, and Comparative Example 1 exhibits slightly higher tensile strength than Comparative Example 2. However, after extended use, Comparative Example 2 exhibits fine lines and powder loss, which are attributed to resin aging and the surface inertness of the hollow glass microspheres.

[0031] It is understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced with equivalents to achieve the same technical effects; as long as the use requirements are met, they are all within the scope of protection of the present invention.

Claims

1. A thermal insulation curtain, characterized by: It comprises a base fabric and a heat-insulating reflective layer, and a gel connecting layer is arranged between the base fabric and the heat-insulating reflective layer.

2. The thermal insulation curtain according to claim 1, characterized in that: The base fabric is made of polyester fabric that has been subjected to heat conduction treatment.

3. The thermal insulation curtain according to claim 2, characterized in that: The method for preparing the thermal insulation curtain comprises the following steps: Step 1: Place the base fabric in an ethanol-water solution and rapidly stir for 20-30 minutes, then freeze-dry to obtain a clean base fabric; Step 2: adding silica aerogel and ethyl cellulose to ethanol to disperse to form a first coating solution, then spraying the first coating solution on the surface of the base fabric and drying to obtain a coating layer; Step 3: quickly immerse the hollow glass microspheres in an alkaline solution, take them out and let them stand at a constant temperature before washing to obtain surface-modified microspheres, then add epoxy resin, bisaminopropyl polydimethylsiloxane, glycidyl ether and water, stir evenly, and vacuum degas to obtain a second coating solution; Step 4: screen-printing the second coating liquid on the surface of the coating layer, baking and laminating the coating layer to obtain a heat-insulating curtain.

4. The thermal insulation curtain according to claim 3, characterized in that: The ethanol volume proportion of the ethanol aqueous solution in step 1 is 60%, and the rapid stirring speed is 300-500r / min.

5. The thermal insulation curtain according to claim 3, characterized in that: The freeze-drying temperature in step 1 is -20°C.

6. The thermal insulation curtain according to claim 3, characterized in that: The mass ratio of the silica aerogel to the ethyl cellulose in step 2 is 7-9:1, the concentration of the silica aerogel in ethanol is 300-500 g / L, and the stirring speed of the dispersion is 500-700 r / min.

7. The thermal insulation curtain according to claim 3, characterized in that: The spraying amount in step 2 is 4-6 mL / min, and the drying temperature is 240-250°C.

8. The thermal insulation curtain according to claim 3, characterized in that: The alkali solution in step 3 is a sodium hydroxide solution with a pH of 11, the soaking time is 2-3 seconds, and the constant temperature standing temperature is 120-150°C.

9. The thermal insulation curtain according to claim 3, characterized in that: The mass ratio of the second coating solution in step 3 is 7-10 parts of surface-modified microbeads, 30-40 parts of epoxy resin, 0.5-0.9 parts of bisaminopropyl polydimethylsiloxane, 2-4 parts of glycidyl ether, and 30-40 parts of water, and the epoxy equivalent of the epoxy resin is 200-230 g / eq.

10. The thermal insulation curtain according to claim 3, characterized in that: The baking temperature in step 4 is 120-130°C.

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