A foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain and its preparation method

Abstract

The present application discloses a foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain and a preparation method thereof, belonging to the technical field of decorative materials. The foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain includes a non-woven fabric layer, a polyester chemical fiber cloth layer, a flame-retardant light-shielding layer, a sound-insulating layer and a printing layer. By setting the flame-retardant light-shielding layer, the sound-insulating layer and the printing layer, and specifically defining the component compositions of the flame-retardant light-shielding layer, the sound-insulating layer and the printing layer, the soft curtain has the functions of flame retardancy, sound absorption, light shielding, antibacterial and mildew proof, and can be digitally inkjet printed, supporting various printing methods such as UV, weak solvent, latex, etc.

Description

Technical Field

[0001] The present application relates to a foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain and a preparation method thereof, belonging to the technical field of decorative materials. Background Art

[0002] Curtains are made of cloth, bamboo, reed, linen, yarn, plastic, metal, etc. and are hung on windows to block or adjust indoor light. As people's living standards improve, they have higher requirements for their living environment. Curtains are one of the most common indoor necessities. In addition to their decorative functions, they also have functions such as light blocking and heat absorption. Suitable curtains can significantly improve the indoor living environment.

[0003] In the existing technology, soft curtains are mostly printed by silk screen printing, embroidery and other methods, and digital printing cannot be used. The efficiency is low and relatively simple. Continuous rainy weather can easily lead to mold, which not only loses the decorative effect but also harms people's health. Once the curtains are installed, it is extremely inconvenient to disassemble and clean them.

[0004] Chinese patent CN115434158B provides a method for preparing antibacterial and light-blocking curtain fabric. Specifically, the method involves mixing menthol / folic acid / dopamine polymer micro-nanoparticles with a polyacrylate emulsion and coating the curtain fabric surface. This method imparts excellent antibacterial, UV protection, and light-blocking properties to the curtain fabric. However, the curtain fabric cannot be digitally printed and lacks flame retardancy and sound insulation. Summary of the Invention

[0005] In order to solve the above problems, a foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain is provided. By arranging a flame-retardant light-shielding layer, a sound-insulating layer and a printing layer, and specifically limiting the components of the flame-retardant light-shielding layer, the sound-insulating layer and the printing layer, the soft curtain has the functions of flame-retardant, sound-absorbing, light-shielding, antibacterial and mildew-proof, and can be digitally printed, and supports multiple printing methods, such as UV, eco-solvent, latex, etc.

[0006] According to one aspect of the present application, a foamed sound-absorbing, light-blocking, antibacterial and mildew-proof soft curtain is provided, comprising a non-woven fabric layer, a polyester chemical fiber fabric layer, a flame-retardant light-blocking layer, a sound-insulating layer and a printed layer;

[0007] The flame retardant light-shielding layer comprises, by weight, 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of compound flame retardant, 20-30 parts of nano-grade titanium dioxide slurry, 0.5-1.5 parts of foam stabilizer, 0.5-1.5 parts of foaming agent, 3-6 parts of carbon black and 1-2 parts of thickener;

[0008] The sound insulation layer comprises 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of nano-sized titanium dioxide slurry, 5-10 parts of foamed microspheres and 0.8-1.5 parts of thickener;

[0009] The printing layer includes 10-15 parts of deionized water, 30-40 parts of acrylic mixed emulsion, 30-40 parts of compounded dispersion liquid, 0.5-1 part of defoamer, 0.5-1.5 parts of whitening agent, 0.5-2 parts of crosslinking agent and 0.5-1.5 parts of thickening agent.

[0010] Optionally, the acrylic mixed emulsion includes a tg -40°C pure acrylic acid and a tg -20°C special fluororesin copolymer anionic emulsion, and the mass ratio of the tg -40°C acrylic acid to the tg -20°C special fluororesin copolymer anionic emulsion is 1:(0.8 - 1.2).

[0011] Optionally, the compounded dispersion liquid includes water, ultrafine silica, polytetrafluoroethylene emulsion, defoamer, dispersant, mildew preventive and antibacterial agent; the mass ratio of water, ultrafine silica, polytetrafluoroethylene emulsion, defoamer, dispersant, mildew preventive and antibacterial agent is (55 - 65):(15 - 25):(5 - 15):(0.5 - 3):(0.5 - 2):(1 - 5):(2 - 7); the particle size of the ultrafine silica is 10 - 20um.

[0012] Optionally, the compounded flame retardant includes water, decabromodiphenylethane, antimony trioxide and dispersant, and the mass ratio of water, decabromodiphenylethane, antimony trioxide and dispersant is (20 - 40):(35 - 45):(15 - 25):(5 - 15).

[0013] Optionally, the foaming microspheres are obtained by suspension copolymerization using acrylonitrile, methyl methacrylate, butyl methacrylate and 2-hydroxyethyl methacrylate as comonomers. The foaming agent used in the copolymerization is low-boiling isopentane, and the dispersant is magnesium hydroxide.

[0014] Specifically, the specific preparation method of the foaming microspheres can refer to the literature Plastics Industry 2023, 51(09), 156 - 162.

[0015] Optionally, the acrylic resin is a -35°C pure acrylic resin;

[0016] The thickening agent is a star-shaped polyurethane thickening agent;

[0017] The nano titanium white paste includes rutile titanium dioxide with a solid content of 60 - 65%;

[0018] The foam stabilizer is a fluorocarbon anionic surfactant;

[0019] The defoamer is a polyether-modified silicone oil;

[0020] The crosslinking agent is trimethylolpropane trimethacrylate;

[0021] The optical brightener is of the stilbene triazine type;

[0022] The foaming agent is polyoxyethylene ether sulfate;

[0023] The dispersant is fatty alcohol polyoxyethylene ether ester sulfonate or fatty alcohol polyoxyethylene ether;

[0024] The non-woven fabric layer is 70g full-cross non-woven fabric; the polyester chemical fiber fabric layer is woven by cross-weaving black and white yarns of 150D / 96F with an inch density of 50*50, and the gram weight of the polyester chemical fiber fabric layer is 140gsm / m 2 .

[0025] Optionally, the mildew-proof agent is isothiazolinone; the antibacterial agent is nano-scale copper-zinc ions.

[0026] According to another aspect of the present application, there is also provided a preparation method of the above-mentioned foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain, including the following steps:

[0027] (1) Bond the non-woven fabric layer and the polyester chemical fiber fabric layer, and the bonding temperature is 150-170°C;

[0028] (2) By weight, mix and stir 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of compound flame retardant, 20-30 parts of nano-scale titanium white paste, 0.5-1.5 parts of foam stabilizer, 0.5-1.5 parts of foaming agent, 3-6 parts of carbon black and 1-2 parts of thickener, adjust the pH to 7-8, the viscosity to 6000-8000 cps / 4#30R, and the foaming ratio to 2-4 times to obtain the flame retardant and light-shielding layer coating; suspend and coat the flame retardant and light-shielding layer coating on the surface of the polyester chemical fiber fabric layer and dry to obtain the flame retardant and light-shielding layer;

[0029] (3) By weight, mix and stir 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of nano-scale titanium white paste, 5-10 parts of foaming microspheres and 0.8-1.5 parts of thickener, adjust the pH to 7-8, the viscosity to 10000-12000 cps / 4#30R to obtain the sound insulation layer coating; suspend and coat the sound insulation layer coating on the surface of the flame retardant and light-shielding layer and dry to obtain the sound insulation layer;

[0030] (4) By weight, mix and stir 10-15 parts of deionized water, 30-40 parts of acrylic mixed emulsion, 30-40 parts of compound dispersion liquid, 0.5-1 part of defoaming agent, 0.5-1.5 parts of optical brightener, 0.5-2 parts of cross-linking agent and 0.5-1.5 parts of thickener, adjust the pH to 7-8, the viscosity to 6000-8000 cps / 4#30R to obtain the printing layer coating; evenly scrape the printing layer coating on the surface of the sound insulation layer with a flat knife and dry to obtain a foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain.

[0031] Optionally, the drying in steps (2), (3) and (4) is all carried out in a nine-section oven; the temperature of the nine-section oven drying in step (2) is: the first section oven is 70 - 80°C, the second section oven is 80 - 120°C, the third, fourth, fifth, sixth, seventh and eighth section ovens are 150 - 160°C, and the ninth section oven is 70 - 90°C;

[0032] The temperature of the nine-section oven drying in step (3) is: the first section oven is 70 - 80°C, the second, third, fourth, fifth, sixth, seventh and eighth section ovens are 80 - 120°C, and the ninth section oven is 70 - 90°C;

[0033] The temperature of the nine-section oven drying in step (4) is: the first section oven is 70 - 80°C, the second section oven is 80 - 120°C, the third, fourth, fifth, sixth, seventh and eighth section ovens are 150 - 160°C, and the ninth section oven is 70 - 90°C.

[0034] Optionally, the vehicle speed in step (1) is 10 - 20 m / min;

[0035] The vehicle speed in step (2) is 10 - 20 m / min; the dry weight of the flame-retardant light-shielding layer is 50 - 60 g, and the thickness is 100 - 200 μm;

[0036] The vehicle speed in step (3) is 5 - 15 m / min; the dry weight of the sound-insulating layer is 50 - 60 g, and the coating thickness is 200 - 300 μm;

[0037] The vehicle speed in step (4) is 10 - 20 m / min; the dry weight of the printing layer is 10 - 20 g, and the coating thickness is 30 - 50 μm.

[0038] The beneficial effects of the present application include but are not limited to:

[0039] 1. For the foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to the present application, by setting a flame-retardant light-shielding layer, a sound-insulating layer and a printing layer, and specifically defining the component compositions of the flame-retardant light-shielding layer, the sound-insulating layer and the printing layer, the soft curtain has the functions of flame retardancy, sound absorption, light shielding, antibacterial and mildew proof, and can be digitally inkjet printed, supporting various printing methods, such as UV, weak solvent, latex, etc.

[0040] 2. According to the foamed sound-absorbing, light-blocking, antibacterial and mildew-proof soft curtain of the present application, the printing layer adopts an acrylic mixed emulsion composed of TG-40℃ pure acrylic acid and TG-20℃ special fluororesin copolymer anionic emulsion in a specific proportion. Since acrylic acid is a water-based emulsion, it swells after being damp and shrinks after air drying, which can easily cause hanging and curling, affecting the use and appearance. The TG-20℃ special fluororesin copolymer anionic emulsion is compounded with acrylic acid in a specific proportion. On the one hand, it can realize scrubbing of stains and sewage on the soft curtain and effectively improve the scrub resistance. On the other hand, it can achieve water swelling resistance, solving the problem of hanging and curling of the soft curtain after being damp.

[0041] 3. According to the foamed sound-absorbing, light-blocking, antibacterial and mildew-proof soft curtain of the present application, nano-scale copper-zinc ions are used as antibacterial agents. On the one hand, copper ions can participate in the generation of hydroxyl radicals with strong oxidizing properties. The generated hydroxyl radicals can attack the cell membranes, nucleic acids and proteins of bacteria, thereby causing the inactivation of cell components and killing bacteria; on the other hand, when inside bacterial cells, copper ions can attack the cell membranes, nucleic acids and proteins of bacteria, thereby causing the inactivation of cell components and killing bacteria. Copper ions have a very good antibacterial effect at room temperature and can complete the antibacterial task without special conditions; at the same time, zinc ions also have antibacterial effects. Adding zinc ions not only reduces costs, but also provides a wider range of sterilization performance; isothiazolinone is used as a mildew inhibitor, which can achieve long-term resistance to bacteria, yeast and mold, and improve the antibacterial and mildew-proof effect.

[0042] 4. According to the foamed sound-absorbing, light-blocking, antibacterial and mildew-proof soft curtain of the present application, the flame-retardant light-blocking layer is compounded by decabromodiphenylethane and antimony trioxide to obtain a bromine antimony flame retardant, which effectively achieves a flame-retardant effect. A foaming agent is added for foaming treatment to increase the thickness of the flame-retardant light-blocking layer and improve the light-blocking effect; the sound insulation layer is prepared by a suspension polymerization method to obtain low-temperature thermal expansion foamed microspheres with a low starting foaming temperature, and a non-woven fabric layer is bonded to a polyester chemical fiber fabric layer to improve the sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0044] Figure 1 This is a schematic diagram of the cross-sectional structure of the foamed sound-absorbing, light-blocking, antibacterial and mildew-proof soft curtain involved in an embodiment of the present application.

[0045] List of parts and reference numerals:

[0046] 1. Non-woven fabric layer; 2. Polyester fabric layer; 3. Flame retardant light-shielding layer; 4. Sound insulation layer; 5. Printing layer. DETAILED DESCRIPTION

[0047] The present application will be described in detail below in conjunction with embodiments, but the present application is not limited to these embodiments.

[0048] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to persons skilled in the art. The reagents or raw materials used in the present invention can be obtained through conventional channels. Unless otherwise specified, the reagents or raw materials used in the present invention are used in accordance with the conventional methods in the art or in accordance with the product instructions. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present invention. The preferred implementation methods and materials described in this patent are for illustrative purposes only.

[0049] Reference Figure 1 , in the embodiments of the present application, a foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain is disclosed, which sequentially includes a non-woven fabric layer 1, a polyester chemical fiber fabric layer 2, a flame-retardant light-shielding layer 3, a sound-insulating layer 4, and a printing layer 5 from bottom to top, so that the soft curtain has the functions of flame retardancy, sound absorption, light shielding, antibacterial and mildew prevention, and can be digitally inkjet printed, supporting various printing methods, such as UV, weak solvent, latex, etc.

[0050] Example 1

[0051] (1) Cross-weave 70 g of a full-cross non-woven fabric layer with black and white yarns of 150D / 96F and an inch density of 50*50, with a gram weight of 140 gsm / m 2 The polyester chemical fiber fabric layer is laminated using a laminating machine, the lamination temperature is 150 °C, the lamination glue is white latex, and the vehicle speed is 10 m / min;

[0052] (2) By weight, mix and stir 10 parts of deionized water, 30 parts of -35 °C pure acrylic resin, 20 parts of a compound flame retardant, 20 parts of nano-titanium white paste, 0.5 part of a foam stabilizer carbon fluoride anionic surfactant, 0.5 part of a foaming agent polyoxyethylene ether sulfate, 3 parts of carbon black, and 1 part of a star-shaped polyurethane thickener. The nano-titanium white paste includes rutile titanium dioxide with a solid content of 60-65%. The compound flame retardant includes water, decabromodiphenylethane, antimony trioxide, and a dispersant fatty alcohol polyoxyethylene ether ester sulfonate. The mass ratio of water, decabromodiphenylethane, antimony trioxide, and the dispersant fatty alcohol polyoxyethylene ether ester sulfonate is 20:35:15:5. Adjust the pH to 7, the viscosity to 6000 cps / 4#30R, and the foaming ratio to 2 times to obtain a flame-retardant light-shielding layer coating. Suspend-coat the flame-retardant light-shielding layer coating on the surface of the polyester chemical fiber fabric layer. The drying temperature of the nine-section oven is: the first oven is 70 °C, the second oven is 80 °C, the third, fourth, fifth, sixth, seventh, and eighth ovens are 150 °C, and the ninth oven is 70 °C to obtain a flame-retardant light-shielding layer; the vehicle speed is 10 m / min, the dry gram weight of the flame-retardant light-shielding layer is 50 g, and the thickness is 100 um;

[0053] (3) By weight, 10 parts of deionized water, 30 parts of -35°C pure acrylic resin, 20 parts of nano titanium white paste, 5 parts of foaming microspheres, and 0.8 parts of star-shaped polyurethane thickener are mixed and stirred. The nano titanium white paste contains rutile titanium dioxide with a solid content of 60%. The foaming microspheres are copolymerized by suspension polymerization using acrylonitrile, methyl methacrylate, butyl methacrylate, and 2-hydroxyethyl methacrylate as comonomers. The foaming agent used for copolymerization is low-boiling isopentane, and the dispersant is magnesium hydroxide. The foaming ratio of the foaming microspheres is 5 times. Adjust the pH to 7 and the viscosity to 10000 cps / 4#30R to obtain the sound insulation layer coating. The sound insulation layer coating is suspended and coated on the surface of the flame-retardant light-shielding layer. The drying temperature of the nine-section oven is as follows: the first oven is 70°C, and the second, third, fourth, fifth, sixth, seventh, and eighth ovens are 80°C, and the ninth oven is 70°C to obtain the sound insulation layer. The vehicle speed is 5 m / min, the dry weight of the sound insulation layer is 50 g, and the coating thickness is 200 μm.

[0054] (4) By weight, 10 parts of deionized water, 30 parts of acrylic mixed emulsion, 30 parts of compounded dispersion liquid, 0.5 parts of defoaming agent polyether modified silicone oil, 0.5 parts of brightening agent diphenyl ethylene triazine type, 0.5 parts of crosslinking agent trimethylolpropane trimethacrylate, and 0.5 parts of star-shaped polyurethane thickener are mixed and stirred. The acrylic mixed emulsion includes an anionic emulsion of a copolymer of tg -40°C pure acrylic acid and tg -20°C special fluororesin. The mass ratio of tg -40°C acrylic acid to the anionic emulsion of the copolymer of tg -20°C special fluororesin is 1:0.8. The compounded dispersion liquid includes water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether ester sulfonate, mildew-proof agent isothiazolinone, and antibacterial agent nano copper-zinc ions. The mass ratio of water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether ester sulfonate, mildew-proof agent isothiazolinone, and antibacterial agent nano copper-zinc ions is 55:15:5:0.5:0.5:1:2. The particle size of the ultrafine silica is 10 μm. Adjust the pH to 7 and the viscosity to 6000 cps / 4#30R to obtain the printing layer coating. The printing layer coating is evenly scraped on the surface of the sound insulation layer with a flat knife. The drying temperature of the nine-section oven is as follows: the first oven is 70°C, the second oven is 80°C, and the third, fourth, fifth, sixth, seventh, and eighth ovens are 150°C, and the ninth oven is 70°C. The vehicle speed is 10 m / min. The dry weight of the printing layer is 10 g, and the coating thickness is 30 μm. A foamed sound-absorbing, light-shielding, antibacterial, and mildew-proof soft curtain is obtained.

[0055] Example 2

[0056] (1) Cross-weave a 70g full-cross non-woven fabric layer with black and white yarns of 150D / 96F and an inch density of 50*50, with a gram weight of 140gsm / m 2 Bond the polyester chemical fiber cloth layer using a laminating machine. The lamination temperature is 170°C, the lamination glue is white latex, and the vehicle speed is 20m / min;

[0057] (2) By weight, mix and stir 20 parts of deionized water, 40 parts of -35°C pure acrylic resin, 30 parts of compound flame retardant, 30 parts of nano titanium white paste, 1.5 parts of foam stabilizer carbon fluoride anionic surfactant, 1.5 parts of foaming agent polyoxyethylene ether sulfate, 6 parts of carbon black, and 2 parts of star-shaped polyurethane thickener. The nano titanium white paste includes rutile titanium dioxide with a solid content of 60-65%. The compound flame retardant includes water, decabromodiphenylethane, antimony trioxide, and dispersant fatty alcohol polyoxyethylene ether. The mass ratio of water, decabromodiphenylethane, antimony trioxide, and dispersant fatty alcohol polyoxyethylene ether is 40:45:25:15. Adjust the pH to 8, the viscosity to 8000cps / 4#30R, and the foaming ratio to 4 times to obtain the flame-retardant and light-shielding layer coating. Suspend-coat the flame-retardant and light-shielding layer coating on the surface of the polyester chemical fiber cloth layer. The drying temperature of the nine-section oven is: the first section oven is 80°C, the second section oven is 120°C, and the third, fourth, fifth, sixth, seventh, and eighth section ovens are 160°C, and the ninth section oven is 90°C to obtain the flame-retardant and light-shielding layer. The vehicle speed is 20m / min, the dry gram weight of the flame-retardant and light-shielding layer is 60g, and the thickness is 200um;

[0058] (3) By weight, mix and stir 20 parts of deionized water, 40 parts of -35°C pure acrylic resin, 30 parts of nano titanium white paste, 10 parts of foaming microspheres, and 1.5 parts of star-shaped polyurethane thickener. The nano titanium white paste includes rutile titanium dioxide with a solid content of 65%. The foaming microspheres are copolymerized by suspension polymerization using acrylonitrile, methyl methacrylate, butyl methacrylate, and 2-hydroxyethyl methacrylate as copolymer monomers. The foaming agent used for copolymerization is low-boiling isopentane, and the dispersant is magnesium hydroxide. The foaming ratio of the foaming microspheres is 5 times. Adjust the pH to 8 and the viscosity to 12000cps / 4#30R to obtain the sound-insulating layer coating. Suspend-coat the sound-insulating layer coating on the surface of the flame-retardant and light-shielding layer. The drying temperature of the nine-section oven is: the first section oven is 80°C, the second, third, fourth, fifth, sixth, seventh, and eighth section ovens are 120°C, and the ninth section oven is 90°C to obtain the sound-insulating layer. The vehicle speed is 15m / min, the dry gram weight of the sound-insulating layer is 60g, and the coating thickness is 300um;

[0059] (4) By weight, 15 parts of deionized water, 40 parts of acrylic mixed emulsion, 40 parts of compounded dispersion liquid, 1 part of defoaming agent polyether modified silicone oil, 1.5 parts of brightening agent diphenyl ethylene triazine type, 2 parts of crosslinking agent trimethylolpropane trimethacrylate, and 1.5 parts of star-shaped polyurethane thickener are mixed and stirred. The acrylic mixed emulsion includes an anionic emulsion of a pure acrylic acid with a Tg of -40°C and a special fluororesin copolymer with a Tg of -20°C. The mass ratio of the acrylic acid with a Tg of -40°C to the anionic emulsion of the special fluororesin copolymer with a Tg of -20°C is 1:1.2. The compounded dispersion liquid includes water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether, mildew preventive isothiazolinone, and antibacterial agent nano-scale copper and zinc ions; the mass ratio of water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether, mildew preventive isothiazolinone, and antibacterial agent nano-scale copper and zinc ions is 65:25:15:3:2:5:7, and the particle size of the ultrafine silica is 20 μm; adjust the pH to 8 and the viscosity to 8000 cps / 4#30R to obtain the printing layer coating; the printing layer coating is evenly scraped on the surface of the sound insulation layer with a flat knife. The drying temperature of the nine-section oven is: the first section oven is 80°C, the second section oven is 120°C, the third, fourth, fifth, sixth, seventh, and eighth section ovens are 160°C, and the ninth section oven is 90°C, and the vehicle speed is 20 m / min; the dry weight of the printing layer is 20 g, and the coating thickness is 50 μm; a foamed sound-absorbing, light-shielding, antibacterial, and mildew-proof soft curtain is obtained.

[0060] Example 3

[0061] (1) A 70 g full-cross non-woven fabric layer is cross-woven with black and white yarns of 150D / 96F and an inch density of 50*50, with a gram weight of 140 gsm / m 2 The polyester chemical fiber cloth layer is laminated with a laminator. The lamination temperature is 150°C, the lamination glue is white latex, and the vehicle speed is 15 m / min;

[0062] (2) By weight, 15 parts of deionized water, 35 parts of -35°C pure acrylic resin, 25 parts of compound flame retardant, 25 parts of nano titanium white paste, 1 part of foam stabilizer carbon fluorine anion surfactant, 1 part of foaming agent polyoxyethylene ether sulfate, 5 parts of carbon black and 1 part of star-shaped polyurethane thickener are mixed and stirred. The nano titanium white paste includes rutile titanium dioxide with a solid content of 60-65%. The compound flame retardant includes water, decabromodiphenylethane, antimony trioxide and dispersant fatty alcohol polyoxyethylene ether. The mass ratio of water, decabromodiphenylethane, antimony trioxide and dispersant fatty alcohol polyoxyethylene ether is 30:40:20:10. Adjust the pH to 7, the viscosity to 6000 cps / 4#30R, and the foaming ratio to 3 times to obtain the flame retardant and light-shielding layer coating. The flame retardant and light-shielding layer coating is suspended and coated on the surface of the polyester chemical fiber cloth layer. The drying temperature of the nine-section oven is: the first section oven is 75°C, the second section oven is 100°C, and the third, fourth, fifth, sixth, seventh and eighth section ovens are 160°C, and the ninth section oven is 80°C to obtain the flame retardant and light-shielding layer. The vehicle speed is 15 m / min, the dry weight of the flame retardant and light-shielding layer is 60 g, and the thickness is 150 um;

[0063] (3) By weight, 15 parts of deionized water, 35 parts of -35°C pure acrylic resin, 25 parts of nano titanium white paste, 8 parts of foaming microspheres and 1 part of star-shaped polyurethane thickener are mixed and stirred. The nano titanium white paste includes rutile titanium dioxide with a solid content of 63%. The foaming microspheres are copolymerized by suspension polymerization using acrylonitrile, methyl methacrylate, butyl methacrylate and 2-hydroxyethyl methacrylate as copolymer monomers. The foaming agent used for copolymerization is low-boiling isopentane, and the dispersant is magnesium hydroxide. The foaming ratio of the foaming microspheres is 5 times. Adjust the pH to 7 and the viscosity to 10000 cps / 4#30R to obtain the sound insulation layer coating. The sound insulation layer coating is suspended and coated on the surface of the flame retardant and light-shielding layer. The drying temperature of the nine-section oven is: the first section oven is 75°C, the second, third, fourth, fifth, sixth, seventh and eighth section ovens are 100°C, and the ninth section oven is 80°C to obtain the sound insulation layer. The vehicle speed is 10 m / min, the dry weight of the sound insulation layer is 50 g, and the coating thickness is 250 um;

[0064] (4) By weight parts, 10 parts of deionized water, 35 parts of acrylic mixed emulsion, 35 parts of compounded dispersion liquid, 1 part of defoaming agent polyether modified silicone oil, 1 part of whitening agent stilbene triazine type, 1 part of crosslinking agent trimethylolpropane trimethacrylate, and 1 part of star-shaped polyurethane thickener are mixed and stirred. The acrylic mixed emulsion includes an anionic emulsion of a copolymer of tg - 40°C pure acrylic acid and tg - 20°C special fluororesin, and the mass ratio of tg - 40°C acrylic acid to the anionic emulsion of the copolymer of tg - 20°C special fluororesin is 1:1. The compounded dispersion liquid includes water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether ester sulfonate, mildew preventive isothiazolinone, and antibacterial agent nano-scale copper and zinc ions; the mass ratio of water, ultrafine silica, polytetrafluoroethylene emulsion, defoaming agent polyether modified silicone oil, dispersant fatty alcohol polyoxyethylene ether ester sulfonate, mildew preventive isothiazolinone, and antibacterial agent nano-scale copper and zinc ions is 60:20:10:1:1:3:5, and the particle size of the ultrafine silica is 15um; adjust the pH to 7 and the viscosity to 6000 cps / 4#30R to obtain the printing layer coating; the printing layer coating is evenly scraped on the surface of the sound insulation layer with a flat knife. The drying temperature of the nine-section oven is: the first oven is 70°C, the second oven is 80°C, the third, fourth, fifth, sixth, seventh, and eighth ovens are 160°C, and the ninth oven is 80°C, and the vehicle speed is 15 m / min; the dry weight of the printing layer is 15 g, and the coating thickness is 40um; a foamed sound-absorbing, light-shielding, antibacterial, and mildew-proof soft curtain is obtained.

[0065] Comparative Example 1

[0066] The difference between Comparative Example 1 and Example 3 is that the antibacterial agent used in step (4) is a silver-based antibacterial agent, and the rest are the same.

[0067] Comparative Example 2

[0068] The difference between Comparative Example 2 and Example 3 is that it does not include a non-woven fabric layer, and the rest are the same.

[0069] Comparative Example 3

[0070] The difference between Comparative Example 3 and Example 3 is that the anionic emulsion of the copolymer of tg - 20°C special fluororesin is not included in the acrylic mixed liquid, and the rest are the same.

[0071] Comparative Example 4

[0072] The difference between Comparative Example 4 and Example 3 is that no whitening agent is added in step (4), and the rest are the same.

[0073] Comparative Example 5

[0074] The difference between Comparative Example 5 and Example 3 is that in step (4), the mildew-proof agent isothiazolinone and the antibacterial agent nano-scale copper and zinc ions are not added, and the rest are the same.

[0075] Comparative Example 6

[0076] The difference between Comparative Example 6 and Example 3 is that the compound flame retardant is replaced by the phosphorus-based flame retardant resorcinol bis(diphenyl phosphate), and the rest are the same.

[0077] Comparative Example 7

[0078] The difference between Comparative Example 7 and Example 3 is that in the acrylic mixed emulsion, the mass ratio of the acrylic acid with tg - 40°C to the anionic emulsion of the copolymer of special fluororesin with tg - 20°C is 2:1, and the rest are the same.

[0079] Experimental Example 1

[0080] The soft curtains prepared in Examples 1 to 3 and Comparative Examples 1 to 7 were subjected to performance tests, and the test results are shown in Table 1.

[0081] Table 1 Performance Test Results

[0082]

[0083]

[0084] The foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain provided by this application has the functions of sound absorption, light shielding, antibacterial, mildew prevention and flame retardancy, can be digitally inkjet printed, supports various printing methods, and has a high sun resistance level.

[0085] As described above, only the embodiments of this application are mentioned. The protection scope of this application is not limited by these specific embodiments, but is determined by the claims of this application. For those skilled in the art, various changes and modifications can be made to this application. Any modifications, equivalent replacements, improvements, etc. made within the technical idea and principle of this application should be included within the protection scope of this application.

Claims

1. A foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain, characterized in that, It includes a non-woven fabric layer, a polyester chemical fiber fabric layer, a flame-retardant light-shielding layer, a sound-insulating layer and a printing layer; By weight parts, the flame-retardant light-shielding layer includes 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of compound flame retardant, 20-30 parts of nano titanium white paste, 0.5-1.5 parts of foam stabilizer, 0.5-1.5 parts of foaming agent, 3-6 parts of carbon black and 1-2 parts of thickener; The sound-insulating layer includes 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of nano titanium white paste, 5-10 parts of foaming microspheres and 0.8-1.5 parts of thickener; The printing layer includes 10-15 parts of deionized water, 30-40 parts of acrylic mixed emulsion, 30-40 parts of compound dispersion liquid, 0.5-1 part of defoaming agent, 0.5-1.5 parts of whitening agent, 0.5-2 parts of cross-linking agent and 0.5-1.5 parts of thickener; The acrylic mixed emulsion includes an anionic emulsion of tg - 40°C pure acrylic acid and tg - 20°C special fluororesin copolymer, and the mass ratio of the tg - 40°C pure acrylic acid to the tg - 20°C special fluororesin copolymer anionic emulsion is 1:(0.8 - 1.2); A preparation method of a foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain, comprising the following steps: (1) Bond the non-woven fabric layer and the polyester chemical fiber fabric layer, and the bonding temperature is 150 - 170°C; (2) By weight parts, mix and stir 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of compound flame retardant, 20-30 parts of nano titanium white paste, 0.5-1.5 parts of foam stabilizer, 0.5-1.5 parts of foaming agent, 3-6 parts of carbon black and 1-2 parts of thickener, adjust the pH to 7-8, the viscosity to 6000-8000 cps / 4#30R, and the foaming ratio to 2-4 times to obtain a flame-retardant light-shielding layer coating; Suspend and coat the flame-retardant light-shielding layer coating on the surface of the polyester chemical fiber fabric layer and dry to obtain a flame-retardant light-shielding layer; (3) By weight parts, mix and stir 10-20 parts of deionized water, 30-40 parts of acrylic resin, 20-30 parts of nano titanium white paste, 5-10 parts of foaming microspheres and 0.8-1.5 parts of thickener, adjust the pH to 7-8, the viscosity to 10000-12000 cps / 4#30R to obtain a sound-insulating layer coating; Suspend and coat the sound-insulating layer coating on the surface of the flame-retardant light-shielding layer and dry to obtain a sound-insulating layer; (4) By weight parts, mix and stir 10-15 parts of deionized water, 30-40 parts of acrylic mixed emulsion, 30-40 parts of compound dispersion liquid, 0.5-1 part of defoaming agent, 0.5-1.5 parts of whitening agent, 0.5-2 parts of cross-linking agent and 0.5-1.5 parts of thickener, adjust the pH to 7-8, the viscosity to 6000-8000 cps / 4#30R to obtain a printing layer coating; Use a flat knife to evenly scrape and coat the printing layer coating on the surface of the sound-insulating layer and dry to obtain a foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain.

2. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 1, characterized in that, The compounded dispersion liquid comprises water, ultrafine silica, polytetrafluoroethylene emulsion, defoamer, dispersant, mildew preventive and antibacterial agent; the mass ratio of water, ultrafine silica, polytetrafluoroethylene emulsion, defoamer, dispersant, mildew preventive and antibacterial agent is (55 - 65):(15 - 25):(5 - 15):(0.5 - 3):(0.5 - 2):(1 - 5):(2 - 7); the particle size of the ultrafine silica is 10 - 20um.

3. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 2, characterized in that, The compounded flame retardant comprises water, decabromodiphenylethane, antimony trioxide and dispersant, and the mass ratio of water, decabromodiphenylethane, antimony trioxide and dispersant is (20 - 40):(35 - 45):(15 - 25):(5 - 15).

4. The foamed sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 1, characterized in that, The foamed microspheres are obtained by suspension copolymerization using acrylonitrile, methyl methacrylate, butyl methacrylate and 2-hydroxyethyl methacrylate as comonomers. The foaming agent used in the copolymerization is low-boiling isopentane, and the dispersant is magnesium hydroxide.

5. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 3, characterized in that, The acrylic resin is a pure acrylic resin at -35°C. The thickener is a star-shaped polyurethane thickener. The nano titanium white paste comprises rutile titanium dioxide with a solid content of 60 - 65%. The foam stabilizer is a fluorocarbon anionic surfactant. The defoamer is a polyether-modified silicone oil. The crosslinking agent is trimethylolpropane trimethacrylate. The brightening agent is of the stilbene triazine type. The foaming agent is polyoxyethylene ether sulfate. The dispersant is fatty alcohol polyoxyethylene ether ester sulfonate or fatty alcohol polyoxyethylene ether. The non-woven fabric layer is a 70g all-cross non-woven fabric; the polyester chemical fiber fabric layer is woven with black and white yarns of 150D / 96F and an inch density of 50*50, and the gram weight of the polyester chemical fiber fabric layer is 140gsm.

6. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 2, wherein The mildew preventive is isothiazolinone; the antibacterial agent is nano-level copper-zinc ions.

7. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 1, wherein, The drying in step (2), step (3) and step (4) is all drying in a nine-section oven. The temperature of drying in the nine-section oven in step (2) is: the first section oven is 70 - 80°C, the second section oven is 80 - 120°C, the third, fourth, fifth, sixth, seventh and eighth section ovens are 150 - 160°C, and the ninth section oven is 70 - 90°C. The temperature of drying in the nine-section oven in step (3) is: the first section oven is 70 - 80°C, the second, third, fourth, fifth, sixth, seventh and eighth section ovens are 80 - 120°C, and the ninth section oven is 70 - 90°C. The temperature of drying in the nine-section oven in step (4) is: the first section oven is 70 - 80°C, the second section oven is 80 - 120°C, the third, fourth, fifth, sixth, seventh and eighth section ovens are 150 - 160°C, and the ninth section oven is 70 - 90°C.

8. The foaming sound-absorbing, light-shielding, antibacterial and mildew-proof soft curtain according to claim 7, wherein, The vehicle speed in step (1) is 10 - 20m / min. The vehicle speed in step (2) is 10 - 20m / min; the dry gram weight of the flame retardant and light-shielding layer is 50 - 60g, and the thickness is 100 - 200um. The vehicle speed in step (3) is 5 - 15m / min; the dry gram weight of the sound-insulating layer is 50 - 60g, and the coating thickness is 200 - 300um. In step (4), the vehicle speed is 10 - 20 m / min; The dry weight of the printed layer is 10 - 20 g, and the coating thickness is 30 - 50 μm.

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