Flame-retardant environment-friendly curtain fabric laminating composite material and preparation method thereof
By forming a flame-retardant barrier through calcium alginate gel coating and biochar layer in the composite material, the problem of easy combustion of curtain materials is solved, and the high efficiency of flame retardancy and environmental protection performance are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG YUANZHENG FABRIC ART CO LTD
- Filing Date
- 2026-03-24
- Publication Date
- 2026-05-12
AI Technical Summary
Existing curtain materials have poor flame retardant properties, are easily ignited and spread rapidly, and traditional materials are not environmentally friendly.
The composite material includes fillers, powders, additives and auxiliaries. It is coated with calcium alginate gel. Sodium sulfate and borax in the powder release water of crystallization at high temperature to form a flame retardant barrier. Reed straw in the additives forms a biochar layer. Coconut shell activated carbon loaded with ammonium dihydrogen phosphate in the auxiliaries enhances the stability of the char layer. Halloysite nanotubes form a physical barrier to adsorb smoke and dust.
It improves the flame retardant and environmental performance of materials, effectively inhibits the spread of flames, reduces smoke release, lowers costs, and reduces chemical hazards by utilizing natural raw materials.
Smart Images
Figure CN122013552A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of curtain manufacturing technology, specifically to a flame-retardant and environmentally friendly curtain fabric coated composite material and its preparation method. Background Technology
[0002] Curtains are an indispensable part of home decoration. There are various curtain fabrics on the market, including polyester, cotton, linen, and silk. Curtains are mainly used to block sunlight, regulate indoor light, protect privacy, and beautify the living environment.
[0003] In existing technologies, traditional curtains are mainly made of textile materials, but these curtain materials have poor flame retardant properties and are prone to melting and ignition when exposed to fire, which can easily spread. Therefore, this invention provides a flame-retardant and environmentally friendly coated composite material for curtain fabric and its preparation method. Summary of the Invention
[0004] The purpose of this invention is to provide a flame-retardant and environmentally friendly curtain fabric coated composite material and its preparation method. The material prepared by this invention not only has good flame-retardant properties, but also excellent environmental performance, effectively improving the performance of the material.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a flame-retardant and environmentally friendly curtain fabric coating composite material, comprising the following raw materials in parts by weight: 22-26 parts filler, 50-60 parts waterborne polyurethane emulsion, 1-2 parts dispersant and 0.5-1.5 parts thickener; The raw materials for the filler include powder, phosphate ester, sodium alginate, deionized water, additives, and calcium chloride aqueous solution; The raw materials for the powder include sodium sulfate decahydrate, borax, halloysite nanotubes, hydroxyethylidene diphosphonic acid, and molten paraffin. The additives include glucose, nitric acid, deionized water, reed stalks, sodium hydroxide solution, calcium oxide, sodium sulfite, auxiliaries, melamine, and graphite oxide.
[0006] Furthermore, the packing material is prepared by the following method: Step 1: Mix the powder and phosphate ester at a mass ratio of 1:(0.8-1) and stir at 200-300 rpm for 20-30 min to obtain the first mixture; Step 2: Mix sodium alginate and deionized water at a mass ratio of (1-2):50, add 15-25% of sodium alginate by mass as an additive, and stir at 200-400 rpm for 20-40 minutes to obtain the second mixture; Step 3: Mix the first mixture and the second mixture, disperse at 2000-3000 rpm for 10-20 min to obtain the third mixture, add calcium chloride aqueous solution, stir at 400-500 rpm for 40-60 min, filter to obtain the solid product, wash, and freeze at -10℃ and 10-30 Pa for 12-16 h to obtain the packing material.
[0007] Furthermore, the mass ratio of the first mixture to the second mixture is 1:(3-5), the mass ratio of the third mixture to the calcium chloride aqueous solution is 1:(2-4), and the mass concentration of the calcium chloride aqueous solution is 3-5%.
[0008] Further, the powder is prepared by the following method: sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid are mixed in a mass ratio of 100:(4-6):8:(3-5), stirred at 50-60℃ and 100-200rpm for 20-40min, molten paraffin is added, stirring is continued for 20-30min, cooled to room temperature, and pulverized through a 200-mesh sieve to obtain the powder, wherein the temperature of the molten paraffin is 60-70℃, and the mass of the molten paraffin is 5-8% of the mass of sodium sulfate decahydrate.
[0009] Further, the additive is prepared by the following method: glucose and nitric acid are mixed and stirred at 50-60℃ and 100-200rpm for 3-5 hours; deionized water is added in an amount three times the total mass of glucose and nitric acid to obtain a mixture; reed stalks are soaked in the mixture at 50-60℃ for 4 hours; the reed stalks are then removed, washed, dried, and pulverized through a 60-80 mesh sieve to obtain reed powder; sodium hydroxide solution is added, and the mixture is stirred at 70-80℃ and 200-300rpm. Stir for 2-3 hours, filter, collect the liquid, add calcium oxide and let stand for 1-2 hours, filter, collect the precipitate, wash, add sodium sulfite, additives, melamine, graphite oxide and deionized water, stir for 30 minutes at 100-200 rpm, adjust the pH to 5-6, and then heat at 140-160℃ and 0.4-0.6MPa for 4-6 hours. The obtained product is spray-dried at an inlet temperature of 180-200℃ and an outlet temperature of 80-90℃ to obtain the additive.
[0010] Further, the mass ratio of glucose to nitric acid is 1:(3-4), the mass concentration of nitric acid is 50-60%, the mass of sodium hydroxide solution is 8 times the mass of reed powder, the mass concentration of sodium hydroxide solution is 1%, the mass of calcium oxide is 3-5% of the liquid mass, and the mass ratio of precipitate, sodium sulfite, additives, melamine, graphite oxide and deionized water is 1:(0.4-0.6):(0.2-0.3):(0.05-0.1):0.02:6.
[0011] Further, the additive is prepared by the following method: Coconut shell activated carbon is pulverized and passed through a 200-mesh sieve, potassium hydroxide solution is added, and the mixture is refluxed at 80°C for 2-3 hours. After filtration, a solid coarse material is obtained, washed, and placed in a 5-8% citric acid solution. The mixture is then soaked at 60-70°C for 1-2 hours, filtered, and a solid fine material is obtained. This fine material is dried at 80-90°C for 4-6 hours, and then heated to 400-500°C at 5-10°C / min under nitrogen protection for 1-2 hours to obtain a carbon product. The carbon product, ammonium dihydrogen phosphate, and deionized water are mixed and stirred at 80-90°C and 50-100 rpm for 2-3 hours. The mixture is then dried at 100-110°C for 4-6 hours and ground through a 100-mesh sieve to obtain the additive.
[0012] Further, the mass ratio of coconut shell activated carbon to potassium hydroxide is 1:(5-8), the mass concentration of potassium hydroxide solution is 10-15%, and the mass ratio of carbon product, ammonium dihydrogen phosphate and deionized water is 1:(0.2-0.3):(0.5-0.8).
[0013] Furthermore, the dispersant is dispersant 5040, and the thickener is hydroxyethyl cellulose.
[0014] Furthermore, the preparation method of the flame-retardant and environmentally friendly curtain fabric coated composite material includes the following steps: take filler as needed, add 40-50% of the mass of waterborne polyurethane emulsion, disperse at 1000-1500 rpm for 40-50 min, add the remaining waterborne polyurethane emulsion, dispersant and thickener, stir at 400-500 rpm for 20-30 min, adjust the viscosity to 4500 mPa·s, coat the obtained product on the surface of the curtain base fabric with the scraping gap controlled at 0.3 mm and the coating amount controlled at 110 g / m², dry at 90℃ for 4 min, bake at 140℃ for 3 min, cool to room temperature, and obtain the flame-retardant and environmentally friendly curtain fabric coated composite material.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the powder and additives are coated with calcium alginate gel. Sodium sulfate and borax in the powder can release water of crystallization when heated, forming an initial flame-retardant barrier by absorbing heat, cooling down, and diluting combustible gases. In addition, the reed straw in the additive is processed to form biochar material. The product of glucose oxidation with melamine can promote the formation of a dense expanded char layer during combustion. The char layer not only has good heat insulation and oxygen barrier effects, but also effectively inhibits the generation of molten droplets and prevents the spread of flames. Finally, the activated and modified coconut shell activated carbon in the additive is loaded with ammonium dihydrogen phosphate, which further enhances the density and stability of the char layer. The above synergistic effects improve the flame-retardant performance of the material.
[0016] 2. In this invention, halloysite nanoparticles in the filler can form a physical barrier during material combustion, adsorbing smoke particles generated during combustion and reducing smoke release. Activated coconut shell carbon, after activation and modification, has adsorption function and can adsorb smoke particles. Meanwhile, sodium alginate used in the filler preparation process is extracted from natural brown algae, reed straw used in the additives is agricultural waste, and glucose is a biomass source. The selection of these natural raw materials not only reduces costs but also reduces the dangers brought by synthetic chemicals. These combined effects improve the environmental performance of the material. Attached Figure Description
[0017] Figure 1 The present invention provides a flowchart of a flame-retardant and environmentally friendly curtain fabric coating composite material and its preparation method. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0019] It should be noted that the raw materials used in the following embodiments are all commercially available. Example 1:
[0020] A flame-retardant and environmentally friendly curtain fabric coating composite material comprises the following raw materials in parts by weight: 22 parts filler, 50 parts waterborne polyurethane emulsion, 1 part dispersant and 0.5 parts thickener; The raw materials for the filler include powder, phosphate ester, sodium alginate, deionized water, additives, and calcium chloride aqueous solution; The raw materials for the powder include sodium sulfate decahydrate, borax, halloysite nanotubes, hydroxyethylidene diphosphonic acid, and molten paraffin. The additives include glucose, nitric acid, deionized water, reed stalks, sodium hydroxide solution, calcium oxide, sodium sulfite, auxiliaries, melamine, and graphite oxide.
[0021] The filler is prepared by the following method: Step 1: Mix the powder and phosphate ester at a mass ratio of 1:0.8 and stir at 200 rpm for 20 min to obtain the first mixture; Step 2: Mix sodium alginate and deionized water at a mass ratio of 1:50, add 15% of the mass of sodium alginate as an additive, and stir at 200 rpm for 20 minutes to obtain the second mixture; Step 3: Mix the first mixture and the second mixture at a mass ratio of 1:3, disperse at 2000 rpm for 10 min to obtain the third mixture, mix the third mixture and calcium chloride aqueous solution at a mass ratio of 1:2, stir at 400 rpm for 40 min, filter to obtain the solid product, wash, and freeze at -10℃ and 10 Pa for 12 h to obtain the filler, wherein the mass concentration of calcium chloride aqueous solution is 3%.
[0022] The powder was prepared by the following method: sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid were mixed and stirred at 50℃ and 100rpm for 20min. Molten paraffin was added and stirring was continued for 20min. The mixture was cooled to room temperature and pulverized through a 200-mesh sieve to obtain the powder. The mass ratio of sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid was 100:4:8:3. The temperature of the molten paraffin was 60℃ and the mass of the molten paraffin was 5% of the mass of sodium sulfate decahydrate.
[0023] The additive is prepared by the following method: Glucose and nitric acid are mixed at a mass ratio of 1:3 and stirred at 50℃ and 100rpm for 3 hours. Three times the total mass of glucose and nitric acid in deionized water is added to obtain a mixture. Reed stalks are soaked in the mixture at 50℃ for 4 hours. The reed stalks are then removed, washed, dried, and pulverized through a 60-mesh sieve to obtain reed powder. Eight times the mass of the reed powder in sodium hydroxide solution is added, and the mixture is stirred at 70℃ and 200rpm for 2 hours. After filtration, the liquid is collected, and 3% (by weight) of calcium oxide is added. After standing for 1 hour, the mixture was filtered, the precipitate was collected, washed, and then mixed with sodium sulfite, additives, melamine, graphite oxide, and deionized water in a mass ratio of 1:0.4:0.2:0.05:0.02:6. The mixture was stirred at 100 rpm for 30 minutes, the pH was adjusted to 5, and then heated at 140℃ and 0.4 MPa for 4 hours. The resulting product was spray-dried at an inlet temperature of 180℃ and an outlet temperature of 80℃ to obtain the additive. The mass concentration of nitric acid was 50%, and the mass concentration of sodium hydroxide solution was 1%.
[0024] The additive was prepared by the following method: Coconut shell activated carbon was pulverized and passed through a 200-mesh sieve. A potassium hydroxide solution was added, and the mixture was refluxed at 80°C for 2 hours. After filtration, a solid coarse material was obtained. This coarse material was washed and placed in a 5% citric acid solution. It was then soaked at 60°C for 1 hour, filtered, and a solid fine material was obtained. This fine material was dried at 80°C for 4 hours. Under nitrogen protection, the temperature was increased to 400°C at 5°C / min and heated for 1 hour to obtain a carbon product. The carbon product, ammonium dihydrogen phosphate, and deionized water were mixed and stirred at 80°C and 50 rpm for 2 hours. The mixture was then dried at 100°C for 4 hours and ground through a 100-mesh sieve to obtain the additive. The mass ratio of coconut shell activated carbon to potassium hydroxide was 1:5, the mass concentration of the potassium hydroxide solution was 10%, and the mass ratio of the carbon product, ammonium dihydrogen phosphate, and deionized water was 1:0.2:0.5.
[0025] The dispersant is dispersant 5040, and the thickener is hydroxyethyl cellulose.
[0026] Preparation method of flame-retardant and environmentally friendly curtain fabric coated composite material: Take filler as needed, add 40% of the mass of waterborne polyurethane emulsion, disperse at 1000 rpm for 40 min, add the remaining waterborne polyurethane emulsion, dispersant and thickener, stir at 400 rpm for 20 min, adjust the viscosity to 4500 mPa·s, apply the resulting product to the surface of curtain base fabric with the scraper gap controlled at 0.3 mm and the coating amount controlled at 110 g / m², dry at 90℃ for 4 min, then bake at 140℃ for 3 min, cool to room temperature, and obtain the flame-retardant and environmentally friendly curtain fabric coated composite material. Example 2:
[0027] A flame-retardant and environmentally friendly curtain fabric coating composite material comprises the following raw materials in parts by weight: 24 parts filler, 55 parts waterborne polyurethane emulsion, 1.5 parts dispersant and 1 part thickener; The raw materials for the filler include powder, phosphate ester, sodium alginate, deionized water, additives, and calcium chloride aqueous solution; The raw materials for the powder include sodium sulfate decahydrate, borax, halloysite nanotubes, hydroxyethylidene diphosphonic acid, and molten paraffin. The additives include glucose, nitric acid, deionized water, reed stalks, sodium hydroxide solution, calcium oxide, sodium sulfite, auxiliaries, melamine, and graphite oxide.
[0028] The filler is prepared by the following method: Step 1: Mix the powder and phosphate ester at a mass ratio of 1:0.9 and stir at 250 rpm for 25 min to obtain the first mixture; Step 2: Mix sodium alginate and deionized water at a mass ratio of 1.5:50, add 20% of the mass of sodium alginate as an additive, and stir at 300 rpm for 30 minutes to obtain the second mixture; Step 3: Mix the first mixture and the second mixture at a mass ratio of 1:4, disperse at 2500 rpm for 15 min to obtain the third mixture, mix the third mixture and calcium chloride aqueous solution at a mass ratio of 1:3, stir at 450 rpm for 50 min, filter to obtain the solid product, wash, and freeze at -10℃ and 20 Pa for 14 h to obtain the packing material, wherein the mass concentration of calcium chloride aqueous solution is 4%.
[0029] The powder was prepared by the following method: sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid were mixed and stirred at 55℃ and 150 rpm for 30 min. Molten paraffin was added and stirring was continued for 25 min. The mixture was cooled to room temperature and pulverized through a 200-mesh sieve to obtain the powder. The mass ratio of sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid was 100:5:8:4. The temperature of the molten paraffin was 65℃ and the mass of the molten paraffin was 6.5% of the mass of sodium sulfate decahydrate.
[0030] The additive was prepared by the following method: Glucose and nitric acid were mixed at a mass ratio of 1:3.5 and stirred at 55℃ and 150 rpm for 4 hours. Three times the total mass of glucose and nitric acid in deionized water was added to obtain a mixture. Reed stalks were soaked in the mixture at 55℃ for 4 hours. The reed stalks were then removed, washed, dried, and pulverized through a 70-mesh sieve to obtain reed powder. Eight times the mass of the reed powder in sodium hydroxide solution was added, and the mixture was stirred at 75℃ and 250 rpm for 2.5 hours. After filtration, the liquid was collected, and 4% (by mass) of calcium oxide was added. After standing for 1.5 hours, the mixture was filtered, the precipitate was collected, washed, and then mixed with sodium sulfite, additives, melamine, graphite oxide, and deionized water in a mass ratio of 1:0.5:0.25:0.08:0.02:6. The mixture was stirred at 150 rpm for 30 minutes, the pH was adjusted to 5.5, and then heated at 150℃ and 0.5 MPa for 5 hours. The resulting product was spray-dried at an inlet temperature of 190℃ and an outlet temperature of 85℃ to obtain the additive, wherein the mass concentration of nitric acid was 55% and the mass concentration of sodium hydroxide solution was 1%.
[0031] The additive was prepared by the following method: Coconut shell activated carbon was pulverized and passed through a 200-mesh sieve. A potassium hydroxide solution was added, and the mixture was refluxed at 80°C for 2.5 hours. After filtration, a solid coarse material was obtained. This coarse material was washed and placed in a 6.5% citric acid solution. It was then soaked at 65°C for 1.5 hours, filtered, and a solid fine material was obtained. This fine material was dried at 85°C for 5 hours. Under nitrogen protection, the temperature was raised to 450°C at 7°C / min and heated for 1.5 hours to obtain a carbon product. The carbon product, ammonium dihydrogen phosphate, and deionized water were mixed and stirred at 85°C and 70 rpm for 2.5 hours. The mixture was then dried at 105°C for 5 hours and ground through a 100-mesh sieve to obtain the additive. The mass ratio of coconut shell activated carbon to potassium hydroxide was 1:6.5, the mass concentration of the potassium hydroxide solution was 12%, and the mass ratio of the carbon product, ammonium dihydrogen phosphate, and deionized water was 1:0.25:0.65.
[0032] The dispersant is dispersant 5040, and the thickener is hydroxyethyl cellulose.
[0033] Preparation method of flame-retardant and environmentally friendly curtain fabric coated composite material: Take filler as needed, add 45% of the mass of waterborne polyurethane emulsion, disperse at 1250 rpm for 45 min, add the remaining waterborne polyurethane emulsion, dispersant and thickener, stir at 450 rpm for 25 min, adjust the viscosity to 4500 mPa·s, apply the resulting product to the surface of curtain base fabric with the scraper gap controlled at 0.3 mm and the coating amount controlled at 110 g / m², dry at 90℃ for 4 min, bake at 140℃ for 3 min, cool to room temperature, and obtain flame-retardant and environmentally friendly curtain fabric coated composite material. Example 3:
[0034] A flame-retardant and environmentally friendly curtain fabric coating composite material comprises the following raw materials in parts by weight: 26 parts filler, 60 parts waterborne polyurethane emulsion, 2 parts dispersant and 1.5 parts thickener; The raw materials for the filler include powder, phosphate ester, sodium alginate, deionized water, additives, and calcium chloride aqueous solution; The raw materials for the powder include sodium sulfate decahydrate, borax, halloysite nanotubes, hydroxyethylidene diphosphonic acid, and molten paraffin. The additives include glucose, nitric acid, deionized water, reed stalks, sodium hydroxide solution, calcium oxide, sodium sulfite, auxiliaries, melamine, and graphite oxide.
[0035] The filler is prepared by the following method: Step 1: Mix the powder and phosphate ester at a mass ratio of 1:1 and stir at 300 rpm for 30 min to obtain the first mixture; Step 2: Mix sodium alginate and deionized water at a mass ratio of 2:50, add 25% of the mass of sodium alginate as an additive, and stir at 400 rpm for 40 min to obtain the second mixture; Step 3: Mix the first mixture and the second mixture at a mass ratio of 1:5 and disperse at 3000 rpm for 20 min to obtain the third mixture. Mix the third mixture and calcium chloride aqueous solution at a mass ratio of 1:4 and stir at 500 rpm for 60 min. Filter to obtain a solid product, wash, and freeze at -10℃ and 30 Pa for 16 h to obtain the filler. The mass concentration of the calcium chloride aqueous solution is 5%.
[0036] The powder was prepared by the following method: sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid were mixed and stirred at 60℃ and 200rpm for 40min. Molten paraffin was added and stirring was continued for 30min. The mixture was cooled to room temperature and pulverized through a 200-mesh sieve to obtain the powder. The mass ratio of sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid was 100:6:8:5. The temperature of the molten paraffin was 70℃ and the mass of the molten paraffin was 8% of the mass of sodium sulfate decahydrate.
[0037] The additive was prepared by the following method: Glucose and nitric acid were mixed at a mass ratio of 1:4 and stirred at 60℃ and 200 rpm for 5 hours. Three times the total mass of glucose and nitric acid in deionized water was added to obtain a mixture. Reed stalks were soaked in the mixture at 60℃ for 4 hours. The reed stalks were then removed, washed, dried, and pulverized through an 80-mesh sieve to obtain reed powder. Eight times the mass of the reed powder in sodium hydroxide solution was added, and the mixture was stirred at 80℃ and 300 rpm for 3 hours. After filtration, the liquid was collected, and 5% (by mass) of calcium oxide was added. After standing for 2 hours, the mixture was filtered, the precipitate was collected, washed, and then mixed with sodium sulfite, additives, melamine, graphite oxide, and deionized water in a mass ratio of 1:0.6:0.3:0.1:0.02:6. The mixture was stirred at 200 rpm for 30 minutes, the pH was adjusted to 6, and then heated at 160℃ and 0.6 MPa for 6 hours. The resulting product was spray-dried at an inlet temperature of 200℃ and an outlet temperature of 90℃ to obtain the additive. The mass concentration of nitric acid was 60%, and the mass concentration of sodium hydroxide solution was 1%.
[0038] The additive was prepared by the following method: Coconut shell activated carbon was pulverized and passed through a 200-mesh sieve. A potassium hydroxide solution was added, and the mixture was refluxed at 80°C for 3 hours. After filtration, a solid coarse material was obtained. This coarse material was washed and placed in an 8% citric acid solution. It was then soaked at 70°C for 2 hours, filtered, and a solid fine material was obtained. This fine material was dried at 90°C for 6 hours. Under nitrogen protection, the temperature was increased to 500°C at 10°C / min and heated for 2 hours to obtain a carbon product. The carbon product, ammonium dihydrogen phosphate, and deionized water were mixed and stirred at 90°C and 100 rpm for 3 hours. The mixture was then dried at 110°C for 6 hours and ground through a 100-mesh sieve to obtain the additive. The mass ratio of coconut shell activated carbon to potassium hydroxide was 1:8, the mass concentration of the potassium hydroxide solution was 15%, and the mass ratio of the carbon product, ammonium dihydrogen phosphate, and deionized water was 1:0.3:0.8.
[0039] The dispersant is dispersant 5040, and the thickener is hydroxyethyl cellulose.
[0040] Preparation method of flame-retardant and environmentally friendly curtain fabric coated composite material: Take filler as needed, add 50% of the mass of waterborne polyurethane emulsion, disperse at 1500 rpm for 50 min, add the remaining waterborne polyurethane emulsion, dispersant and thickener, stir at 500 rpm for 30 min, adjust the viscosity to 4500 mPa·s, apply the resulting product to the surface of curtain base fabric with the scraping gap controlled at 0.3 mm and the coating amount controlled at 110 g / m², dry at 90℃ for 4 min, then bake at 140℃ for 3 min, cool to room temperature, and obtain the flame-retardant and environmentally friendly curtain fabric coated composite material.
[0041] Comparative Example 1: The difference between this comparative example and Example 1 is that this comparative example does not contain fillers.
[0042] Comparative Example 2 differs from Example 1 in that it does not contain powder.
[0043] Comparative Example 3: The difference between this comparative example and Example 1 is that this comparative example does not contain any additives.
[0044] Performance testing: Performance tests were conducted on the materials treated in Examples 1-3 and Comparative Examples 1-3, and the test data are recorded in the table below: Table 1
[0045] In the performance test, the flame retardant performance is tested according to GB / T5454-1997. The higher the value, the better the flame retardant performance. The environmental performance is tested according to GB / T8627-2007. The lower the value, the better the environmental performance.
[0046] Among them, the flame retardant and environmental performance of the materials treated in Comparative Examples 1-3 were lower than those in Examples 1-3, which illustrates the importance of fillers. Components such as sodium sulfate and borax in the powder can release water of crystallization at high temperatures, effectively blocking the contact between oxygen and the substrate, absorbing a large amount of heat, and reducing the surface temperature of the material. Simultaneously, the released water vapor can dilute the concentration of combustible gases. Furthermore, halloysite nanoparticles can form a physical barrier during material combustion, both delaying the transfer of heat and oxygen and adsorbing smoke particles generated during combustion, reducing smoke release. Therefore, the flame retardant and environmental performance of Comparative Example 2, which lacks the powder, decreased. Additionally, the additives used reed straw as biomass raw material, after processing, prepared biochar materials. Glucose, after oxidization with nitric acid, reacted with melamine to form a material containing flame retardant... The products of the combustion elements can promote the formation of a dense expanded char layer during combustion. This char layer not only has good heat insulation and oxygen barrier effects, but also effectively inhibits the generation of molten droplets and prevents the spread of flames. In addition, the activated carbon in the additives, which has been activated and modified, is loaded with ammonium dihydrogen phosphate, which further enhances the density and stability of the char layer. The activated carbon also captures soot particles by adsorption. Therefore, the flame retardant and environmental performance of the comparative example 3, which lacks the additives, is also reduced. The filler is the core carrier of the flame retardant function. Its interior is coated with calcium alginate gel to coat the powder and additives. When the material is heated, the coating structure can slow down the release rate of the internal flame retardant components, so that the flame retardant effect can be maintained and stabilized. Therefore, the performance of the comparative example 1, which lacks the entire filler, is significantly reduced.
[0047] By comparing and analyzing the relevant data in the table, it can be seen that the flame-retardant and environmentally friendly curtain fabric coated composite material of the present invention not only has good flame-retardant properties but also excellent environmental performance. This indicates that the flame-retardant and environmentally friendly curtain fabric coated composite material provided by the present invention has a broader market prospect and is more suitable for promotion.
[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A flame-retardant and environmentally friendly laminated composite material for curtain fabrics, characterized in that, The raw materials include the following parts by weight: 22-26 parts filler, 50-60 parts waterborne polyurethane emulsion, 1-2 parts dispersant, and 0.5-1.5 parts thickener; The raw materials for the filler include powder, phosphate ester, sodium alginate, deionized water, additives, and calcium chloride aqueous solution; The raw materials for the powder include sodium sulfate decahydrate, borax, halloysite nanotubes, hydroxyethylidene diphosphonic acid, and molten paraffin. The additives include glucose, nitric acid, deionized water, reed stalks, sodium hydroxide solution, calcium oxide, sodium sulfite, auxiliaries, melamine, and graphite oxide.
2. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 1, characterized in that, The filler is prepared by the following method: Step 1: Mix the powder and phosphate ester at a mass ratio of 1:(0.8-1) and stir at 200-300 rpm for 20-30 min to obtain the first mixture; Step 2: Mix sodium alginate and deionized water at a mass ratio of (1-2):50, add 15-25% of sodium alginate by mass as an additive, and stir at 200-400 rpm for 20-40 minutes to obtain the second mixture; Step 3: Mix the first mixture and the second mixture, disperse at 2000-3000 rpm for 10-20 min to obtain the third mixture, add calcium chloride aqueous solution, stir at 400-500 rpm for 40-60 min, filter to obtain the solid product, wash, and freeze at -10℃ and 10-30 Pa for 12-16 h to obtain the packing material.
3. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 2, characterized in that, The mass ratio of the first mixture to the second mixture is 1:(3-5), the mass ratio of the third mixture to the calcium chloride aqueous solution is 1:(2-4), and the mass concentration of the calcium chloride aqueous solution is 3-5%.
4. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 1, characterized in that, The powder is prepared by the following method: sodium sulfate decahydrate, borax, halloysite nanotubes and hydroxyethylidene diphosphonic acid are mixed in a mass ratio of 100:(4-6):8:(3-5), stirred at 50-60℃ and 100-200rpm for 20-40min, molten paraffin is added, stirring is continued for 20-30min, cooled to room temperature, and pulverized through a 200-mesh sieve to obtain the powder. The temperature of the molten paraffin is 60-70℃, and the mass of the molten paraffin is 5-8% of the mass of sodium sulfate decahydrate.
5. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 1, characterized in that, The additive is prepared by the following method: glucose and nitric acid are mixed and stirred at 50-60℃ and 100-200rpm for 3-5 hours. Three times the total mass of glucose and nitric acid is added to deionized water to obtain a mixture. Reed stalks are soaked in the mixture at 50-60℃ for 4 hours. The reed stalks are then removed, washed, dried, and pulverized through a 60-80 mesh sieve to obtain reed powder. Sodium hydroxide solution is added, and the mixture is stirred at 70-80℃ and 200-300rpm. Stir for 2-3 hours, filter, take the liquid, add calcium oxide and let stand for 1-2 hours, filter, take the precipitate, wash, add sodium sulfite, additives, melamine, graphite oxide and deionized water, stir for 30 minutes at 100-200 rpm, adjust the pH to 5-6, and then heat at 140-160℃ and 0.4-0.6MPa for 4-6 hours. The obtained product is spray-dried at an inlet temperature of 180-200℃ and an outlet temperature of 80-90℃ to obtain the additive.
6. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 5, characterized in that, The mass ratio of glucose to nitric acid is 1:(3-4), the mass concentration of nitric acid is 50-60%, the mass of sodium hydroxide solution is 8 times the mass of reed powder, the mass concentration of sodium hydroxide solution is 1%, the mass of calcium oxide is 3-5% of the liquid mass, and the mass ratio of precipitate, sodium sulfite, additives, melamine, graphite oxide and deionized water is 1:(0.4-0.6):(0.2-0.3):(0.05-0.1):0.02:
6.
7. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 1, characterized in that, The additive is prepared by the following method: Coconut shell activated carbon is pulverized and passed through a 200-mesh sieve, potassium hydroxide solution is added, and the mixture is refluxed at 80°C for 2-3 hours. After filtration, a solid coarse material is obtained, washed, and placed in a 5-8% citric acid solution. The mixture is then soaked at 60-70°C for 1-2 hours, filtered, and a solid fine material is obtained. This fine material is dried at 80-90°C for 4-6 hours, and then heated to 400-500°C at 5-10°C / min under nitrogen protection for 1-2 hours to obtain a carbon product. The carbon product, ammonium dihydrogen phosphate, and deionized water are mixed and stirred at 80-90°C and 50-100 rpm for 2-3 hours. The mixture is then dried at 100-110°C for 4-6 hours and ground through a 100-mesh sieve to obtain the additive.
8. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 7, characterized in that, The mass ratio of coconut shell activated carbon to potassium hydroxide is 1:(5-8), the mass concentration of potassium hydroxide solution is 10-15%, and the mass ratio of carbon product, ammonium dihydrogen phosphate and deionized water is 1:(0.2-0.3):(0.5-0.8).
9. The flame-retardant and environmentally friendly curtain fabric coated composite material according to claim 1, characterized in that, The dispersant is dispersant 5040, and the thickener is hydroxyethyl cellulose.
10. The method for preparing the flame-retardant and environmentally friendly curtain fabric coated composite material according to any one of claims 1-9, characterized in that, The process includes the following steps: Take filler as needed, add 40-50% of the mass of waterborne polyurethane emulsion, disperse at 1000-1500 rpm for 40-50 min, add the remaining waterborne polyurethane emulsion, dispersant and thickener, stir at 400-500 rpm for 20-30 min, adjust the viscosity to 4500 mPa·s, apply the resulting product to the surface of the curtain base fabric with the scraper gap controlled at 0.3 mm and the coating amount controlled at 110 g / m², dry at 90℃ for 4 min, bake at 140℃ for 3 min, and cool to room temperature to obtain a flame-retardant and environmentally friendly curtain fabric coated composite material.