Production process of fire-retardant, easy-to-clean, sound-absorbing electrostatic flocking glass fiber wall cloth

Abstract

The application discloses a production process of a fire-retardant, easy-to-clean, sound-absorbing and electrostatic flocking glass fiber wall cloth, which comprises a glass fiber base cloth, a fire-retardant adhesive and fire-retardant polyester flocking wool, and the fire-retardant adhesive is modified by adopting organic silicon grafting modification and physical addition of a phosphorus-based fire retardant, so that the viscosity of the prepared fire-retardant adhesive is not affected, and the fire-retardant effect is increased. The glass fiber base cloth is connected with a flocking layer through an adhesive layer, and a novel electrostatic flocking method and a high-efficiency and reasonable improved process are adopted, so that the prepared flocking wall cloth has the characteristics of being beautiful, fire-retardant, easy to clean and sound-absorbing, and is suitable for indoor decoration and has a considerable market prospect.

Description

Technical Field

[0001] This invention relates to the technical field of wall coverings, specifically to a production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wall coverings. Background Technology

[0002] Wallpaper is a type of decorative fabric applied to interior spaces. Printed or embossed designs are applied to a base material to create various velvet effects, making it widely applicable to residential, office, and hotel interiors. However, current wallpapers are based on cotton or synthetic fiber fabrics with flocking, which makes them susceptible to moisture, mold, and deformation, leading to wallpaper failure. Fiberglass wallpaper, on the other hand, offers advantages such as moisture and mildew resistance, impact resistance, corrosion resistance, water resistance, non-toxicity, and non-flammability. It can also effectively reinforce walls and prevent cracking.

[0003] Patent CN110820129A describes a manufacturing process for a firewall, using fiberglass as the base fabric, followed by coating, electrostatic flocking, and finally drying to form the firewall fabric. In this process, besides the fiberglass, the coating material and the flocking are all flammable materials; therefore, the flame-retardant effect of this fiberglass wallcovering is limited. Patent CN203472218U describes a durable, tough, and three-dimensional electrostatic flocked nonwoven fabric. Patent CN102429562A describes an electrostatic flocked carpet obtained by applying an oil-based adhesive to the base material via thermal sublimation transfer and then electrostatically flocking under high pressure. This method is simple to operate, but it lacks functionality and cannot meet the market's demand for high-end and functional products. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing flame-retardant, easy-to-clean, and sound-absorbing electrostatic flocked fiberglass wall covering, in order to solve the problems of limited functionality and low added value in the current electrostatic flocking industry.

[0005] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0006] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave, twill weave, satin weave and other glass fiber cloths. A layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber, with a sizing rate of 20-60 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0007] (2) Preparation of flame retardant adhesive: Using acrylic emulsion as raw material, the adhesive is modified for flame retardancy by two methods: organosilicon grafting modification and physical addition of phosphorus flame retardants.

[0008] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphopropionic acid was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. Flame retardant CEPPA, dispersant, antioxidant and other additives were added in proportion, and after co-extrusion by twin screws and cooling and cutting, a masterbatch with high flame retardant content was obtained. Subsequently, the masterbatch and polyester chips were spun to obtain flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0009] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0010] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0011] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0012] In step 2, vinyl silicone oil and methacrylate-based alkoxyphosphate are added to the acrylate emulsion as reactive monomers, and diacetone acrylamide is added as a crosslinking monomer. Then, an emulsifier and initiator are added, along with the ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite. The polymerization reaction is carried out at a temperature of 70-90℃, finally yielding an acrylate adhesive with excellent flame retardant properties. The acrylate adhesive with excellent flame retardant properties is made from the following raw materials in the following mass percentages:

[0013]

[0014] Traditional flame-retardant modification of acrylates often involves adding large amounts of inorganic flame retardants, which negatively impacts the film-forming properties of the emulsion and the mechanical properties of the coating. Chemical grafting modification often results in excessively high graft monomer content and low monomer conversion rates, affecting emulsion performance. This invention employs both chemical grafting and physical blending methods to treat the adhesive, reducing the amount of flame retardant used without affecting the film-forming properties of the emulsion or the mechanical properties of the coating, thus improving the overall performance of the adhesive.

[0015] In step 3, the preparation of flame-retardant fleece mainly involves adding flame retardant CEPPA, dispersant, and antioxidant in a specific ratio. The mass ratio of 3-hydroxyphenylphosphopropionic acid, dispersant, and antioxidant is 20–40:0.05–0.5:0.05–0.5, with the most preferred ratio being 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, a masterbatch with a high flame retardant content of 20–30% is obtained. Subsequently, the masterbatch is mixed with polyester chips (the ratio of masterbatch to polyester chips is 3:8–12, with the most preferred ratio being 3:10), dried, melted, extruded, cooled, dropped into drums, drawn, cut, and packaged to obtain flame-retardant fleece with a fiber length of 1.0–5.0 mm and a fineness of 1.0–2.5 d.

[0016] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic voltage is adjustable from 0-200kV, while the DC electrostatic generator produces a voltage from 0-10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large amount of flocking fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. The fibers then penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical challenges of low flocking volume and slow flocking speed, improving the quality of the flocked products. The flocking time is 2-10 seconds.

[0017] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6-10%, and the spraying coating amount is 50-70 g / m². 2 The baking temperature is 140-160℃, and the baking time is 60 seconds.

[0018] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0019] The flame-retardant, easy-to-clean, sound-absorbing electrostatic flocked fiberglass wall covering prepared by this invention has a limiting oxygen index of 27-31%, a water contact angle of 140°-150°, and a sound absorption coefficient of 0.48 in the 200-6300Hz frequency band.

[0020] Compared with the prior art, the beneficial effects of this invention patent are:

[0021] The fiberglass flocked fabric of this invention can not only effectively reinforce the wall surface and prevent wall cracking, but also has functions such as flame retardancy, easy cleaning, and sound absorption, meeting the market demand for high-end wall coverings.

[0022] This invention modifies the flame-retardant adhesive using organosilicon grafting and physical addition of phosphorus-based flame retardants. The viscosity of the prepared flame-retardant adhesive remains unaffected, while its flame-retardant effect is enhanced. The fiberglass base fabric is connected to the flocked layer via an adhesive layer. Employing a novel electrostatic flocking method and a highly efficient and rationally improved process, the resulting flocked wall covering possesses aesthetic appeal, flame retardancy, easy cleaning, and sound absorption properties, making it suitable for interior decoration and promising a promising market prospect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the glass fiber of the present invention. Detailed Implementation

[0024] The technical solution of this invention will be clearly and completely described below with reference to the accompanying drawings, and further explanation of this invention will be provided.

[0025] like Figure 1 As shown, the structure of the glass fiber of the present invention includes a glass fiber base fabric 1, a flame-retardant modified adhesive 2, and flame-retardant fluff 3.

[0026] Example 1

[0027] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0028] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0029] (2) Preparation of flame-retardant adhesive: Using acrylic emulsion as raw material, the adhesive was modified for flame retardancy through organosilicon grafting. The main formulation is as follows:

[0030]

[0031] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, ethylene terephthalate chips (intrinsic viscosity 0.78), dispersant (high acid value polyester wax), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) were co-extruded by a twin-screw extruder, cooled and cut to obtain a masterbatch with a high flame retardant content. The masterbatch was then spun to obtain flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0032] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0033] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0034] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0035] In step 2, vinyl silicone oil and methacrylate alkoxyphosphate (PAM-100) are added to the acrylate emulsion as reactive monomers, and diacetone acrylamide is added as a crosslinking monomer. Then, an emulsifier and an initiator are added. An anionic emulsifier is used, and ammonium persulfate is used as the initiator. The polymerization reaction is carried out at a polymerization temperature of 70°C to obtain an acrylate adhesive with excellent flame retardant function.

[0036] In step 3, 3-hydroxyphenylphosphopropionic acid (3-hydroxyphenylphosphopropionic acid) was used as a flame retardant. The mass ratio of the dispersant (high acid value polyester wax, Shanghai Jinghong Chemical Technology Co., Ltd., model wax 7902) and the antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) was 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, masterbatch was obtained. Subsequently, the masterbatch was mixed with polyester chips (ethylene terephthalate, intrinsic viscosity 0.78) in a ratio of 3:10 (masterbatch to polyester chips mass ratio), followed by drying, melting, extrusion, cooling, drum finishing, stretching, cutting, and packaging to obtain flame-retardant fleece with a limiting oxygen index of 25%, fiber length of 1.0 mm, and fineness of 1.0 d.

[0037] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the flock fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 2 seconds.

[0038] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0039] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining fiberglass base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0040] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 25%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0041] Example 2

[0042] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0043] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0044] (2) Preparation of flame-retardant adhesive: Using acrylic emulsion as raw material, 1-butyl-3-methyl-imidazolium hypophosphite, an ionic liquid flame retardant, was added. The mass ratio of the ionic liquid flame retardant to the acrylic emulsion was 1:4.

[0045] 80% acrylic emulsion

[0046] 1-Butyl-3-methyl-imidazolium hypophosphite 20%

[0047] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, ethylene terephthalate chips (intrinsic viscosity 0.78), dispersant (KYD-006), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) were co-extruded by a twin-screw extruder, cooled and cut to obtain a masterbatch with a high flame retardant content. The masterbatch was then spun to obtain flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0048] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0049] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0050] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0051] In step 2, the flame retardant addition ratio is 20%, and the modified adhesive is increased from 17% to 25%.

[0052] In step 3, the preparation of flame-retardant fleece mainly involves adding flame retardant CEPPA, dispersant (high acid value polyester wax), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) in a mass ratio of 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, a masterbatch with a high flame retardant content of 20% is obtained. Subsequently, the masterbatch is mixed with polyester chips (ethylene terephthalate, intrinsic viscosity 0.78) in a mass ratio of 3:10, followed by drying, melting, extrusion, cooling, drum finishing, stretching, cutting, and packaging to obtain flame-retardant fleece with a limiting oxygen index of 25%, a fiber length of 1.0 mm, and a fineness of 1.0 d.

[0053] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the flock fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 2 seconds.

[0054] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0055] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0056] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 25%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0057] Example 3

[0058] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0059] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0060] (2) Preparation of flame-retardant adhesive: Using acrylic emulsion as raw material, 1-butyl-3-methyl-imidazolium hypophosphite, an ionic liquid flame retardant, was added at a mass ratio of 3:7 to the acrylic emulsion. The adhesive was then blended for flame retardant modification. The main formulation is as follows:

[0061] 70% acrylic emulsion;

[0062] 30% 1-Butyl-3-methyl-imidazolium hypophosphite;

[0063] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, ethylene terephthalate chips (intrinsic viscosity 0.78), dispersant (high acid value polyester wax), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) were co-extruded by a twin-screw extruder, cooled and cut to obtain a masterbatch with a high flame retardant content. The masterbatch was then spun to obtain flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0064] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0065] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0066] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0067] In step 2, after blending and flame retardant modification, the limiting oxygen index of the adhesive increased from 17% to 27%.

[0068] In step 3, the flame-retardant fleece is prepared mainly by adding 3-hydroxyphenylphosphopropionic acid flame retardant (CEPPA), dispersant, and antioxidant in a mass ratio of 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, a masterbatch with a high flame retardant content of 20% is obtained. Subsequently, the masterbatch is mixed with polyester chips (the mass ratio of masterbatch to polyester chips is 3:10), dried, melted, extruded, cooled, dropped into drums, drawn, cut, and packaged to obtain flame-retardant fleece with a limiting oxygen index of 25%, a fiber length of 1.0 mm, and a fineness of 1.0 d.

[0069] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the flock fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 2 seconds.

[0070] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0071] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0072] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 27%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0073] Example 4

[0074] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0075] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0076] (2) Preparation of flame-retardant adhesive: Using acrylic emulsion as raw material, the adhesive was modified for flame retardancy by organosilicon grafting and the physical addition of ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite. The addition ratio of 1-butyl-3-methyl-imidazolium hypophosphite was 20% of the total adhesive mass. The adhesive was then blended for flame retardant modification. The main formulation is as follows:

[0077]

[0078] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphonopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, polyester chips, dispersant and antioxidant were co-extruded by twin screw extrusion, cooled and cut to obtain a masterbatch with high flame retardant content. Subsequent spinning yielded flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0079] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0080] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0081] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0082] In step 2, vinyl silicone oil and methacrylate-based alkoxyphosphate (PAM-100) are added to the acrylate emulsion as reactive monomers, and diacetone acrylamide is added as a crosslinking monomer. Then, an emulsifier and an initiator are added. The emulsifier is an anionic emulsifier, and the initiator is ammonium persulfate. At the same time, ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite is added to carry out the polymerization reaction at a polymerization temperature of 70°C to obtain an acrylate adhesive with excellent flame retardant function.

[0083] In step 3, flame retardant CEPPA, ethylene terephthalate chips (intrinsic viscosity 0.78), dispersant (KYD-006), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) are added in a mass ratio of 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, a masterbatch with a high flame retardant content of 20% is obtained. Subsequently, the masterbatch is mixed with polyester chips (masterbatch to polyester chips mass ratio of 3:10), dried, melted, extruded, cooled, drummed, drawn, cut, and packaged to obtain flame-retardant fleece with a limiting oxygen index of 25%, a fiber length of 1.0 mm, and a fineness of 1.0 d.

[0084] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the flock fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 2 seconds.

[0085] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorinated three-proof additive (fluorinated polyacrylate), with a mass fraction of 6%, and a spraying application rate of 50 g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0086] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0087] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 25%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0088] Example 5

[0089] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0090] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0091] (2) Preparation of flame retardant adhesive: Using acrylic emulsion as raw material, the adhesive is modified by organosilicon grafting and physical addition of ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite. The addition ratio of 1-butyl-3-methyl-imidazolium hypophosphite is 30%, and the adhesive is blended for flame retardant modification.

[0092]

[0093] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphonopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, polyester chips, dispersant, antioxidant and other ingredients were added in proportion, and after co-extrusion by twin screw extruder and cooling and cutting, a masterbatch with high flame retardant content was obtained. The masterbatch was then spun to obtain flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0094] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0095] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0096] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0097] In step 2, vinyl silicone oil and methacrylate-based alkoxyphosphate (PAM-100) are added to the acrylate emulsion as reactive monomers, and diacetone acrylamide is added as a crosslinking monomer. Then, an emulsifier (anionic emulsifier) ​​and an initiator (ammonium persulfate) are added at a concentration of 0.3% of the total adhesive mass. The polymerization reaction is carried out at 70°C to obtain an acrylate adhesive with excellent flame retardant properties. Simultaneously, an ionic liquid flame retardant, 1-butyl-3-methyl-imidazolium hypophosphite, is added at a concentration of 30% of the total adhesive mass. Finally, an acrylate adhesive with excellent flame retardant properties is obtained.

[0098] In step 3, flame retardant CEPPA, dispersant (KYD-006), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) are added in a mass ratio of 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, a masterbatch with a high flame retardant content of 30% is obtained. Subsequently, the masterbatch is mixed with polyester chips (ethylene terephthalate chips, intrinsic viscosity 0.78) in a mass ratio of 3:10, followed by drying, melting, extrusion, cooling, drum finishing, stretching, cutting, and packaging to obtain flame-retardant fleece with a limiting oxygen index of 29%, a fiber length of 5.0 mm, and a fineness of 2.0 d.

[0099] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the flock fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 2 seconds.

[0100] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0101] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0102] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 29%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0103] Example 6

[0104] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0105] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0106] (2) Preparation of flame retardant adhesive: Using acrylic emulsion as raw material, the adhesive is modified by organosilicon grafting and physical addition of ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite. The addition ratio of 1-butyl-3-methyl-imidazolium hypophosphite is 30%, and the adhesive is blended for flame retardant modification.

[0107] The main ingredients are as follows:

[0108]

[0109] (3) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphonopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, polyester chips, dispersant and antioxidant were co-extruded by twin screw extrusion, cooled and cut to obtain a masterbatch with high flame retardant content. Subsequent spinning yielded flame-retardant polyester fleece. At the same time, in-situ coloring technology was used to prepare undyed fleece.

[0110] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0111] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0112] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0113] In step 2, vinyl silicone oil and methacrylate alkoxy phosphate (PAM-100) are added to the acrylate emulsion as reactant monomers, diacetone acrylamide is added as a crosslinking monomer, and then an emulsifier and an initiator are added. The emulsifier is an anionic emulsifier, and the initiator is ammonium persulfate. At the same time, 1-butyl-3-methyl-imidazolium hypophosphite, an ionic liquid flame retardant, is added at a ratio of 30%. The polymerization reaction is carried out to obtain an acrylate adhesive with excellent flame retardant function.

[0114] In step 3, flame retardant CEPPA, dispersant (KYD-006), and antioxidant (3,5-di-tert-butyl-4-hydroxyhydrogenated cinnamic acid ester) are added in a mass ratio of 30:0.1:0.1. After co-extrusion by a twin-screw extruder and cooling and cutting, masterbatch is obtained. Subsequently, the masterbatch is mixed with polyester chips (ethylene terephthalate chips, intrinsic viscosity 0.78) in a mass ratio of 3:10, followed by drying, melting, extrusion, cooling, drum finishing, stretching, cutting, and packaging to obtain flame-retardant fleece with a limiting oxygen index of 31%, a fiber length of 5.0 mm, and a fineness of 2.0 d.

[0115] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 4 seconds.

[0116] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0117] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0118] The multifunctional wall covering prepared in this embodiment has a limiting oxygen index of 30%, a water contact angle of 145°, and a sound absorption coefficient of 0.48 in the 200–6300 Hz frequency band.

[0119] Comparative Example 1:

[0120] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0121] (1) Preparation of flame retardant adhesive: Using acrylic emulsion as raw material, the adhesive is modified by organosilicon grafting and physical addition of ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite. The addition ratio of 1-butyl-3-methyl-imidazolium hypophosphite is 30%, and the adhesive is blended for flame retardant modification.

[0122] (2) Preparation of flame-retardant fleece: 3-hydroxyphenylphosphonopropionic acid (CEPPA) was selected as the flame retardant, which has high flame retardancy and excellent thermal stability. The flame retardant CEPPA, polyester chips, dispersant and antioxidant were added in a mass ratio of 30:0.1:0.1. After co-extrusion by twin screws and cooling and cutting, a masterbatch with a high flame retardant content was obtained. Subsequent spinning yielded flame-retardant polyester fleece. At the same time, in-situ dyeing technology was used to prepare undyed fleece.

[0123] (3) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0124] (4) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0125] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0126] In step 2, the following are added sequentially to the acrylate emulsion: vinyl silicone oil and methacrylate-based alkoxyphosphate (PAM-100) as reactive monomers, diacetone acrylamide (3%) as crosslinking monomer, with a mass ratio of vinyl silicone oil to methacrylate-based alkoxyphosphate of 5:1; 3% emulsifier, 0.3% initiator, and 3% PAM-100. Simultaneously, 30% of the ionic liquid flame retardant 1-butyl-3-methyl-imidazolium hypophosphite is added, with the remainder being the acrylate emulsion. The polymerization temperature is 70-90℃, ultimately yielding an acrylate adhesive with excellent flame retardant properties.

[0127] In step 3, the preparation of flame-retardant fleece mainly involves adding flame retardant CEPPA, dispersant, and antioxidant in a mass ratio of 30:0.1:0.1, co-extruding with a twin-screw extruder, and then cooling and cutting to obtain a masterbatch with a high flame retardant content of 30%. Subsequently, the masterbatch is mixed with polyester chips (masterbatch to polyester chips mass ratio of 3:10), dried, melted, extruded, cooled, dropped into drums, stretched, cut, and packaged to obtain flame-retardant fleece with a fiber length of 5.0 mm and a fineness of 2.0 d.

[0128] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 4 seconds.

[0129] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0130] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0131] In contrast to Example 1, the lack of modification treatment on the glass fiber resulted in a decrease in the bonding strength between the glass fiber and the adhesive, and a decrease in the wear resistance of the fiber.

[0132] Comparative Example 2

[0133] A production process for flame-retardant, easy-to-clean, sound-absorbing, electrostatic flocked fiberglass wallcovering includes:

[0134] (1) Surface modification of glass fiber cloth: Glass fiber yarn is used to make plain weave glass fiber cloth, and a layer of silane-modified β-cyclodextrin is coated on the surface of the glass fiber with a sizing rate of 20 g / m 2 This effectively improves the bonding strength between glass fiber and adhesive.

[0135] (2) Selection of adhesive: Acrylic emulsion is used as adhesive for coating process.

[0136] (3) Preparation of fluff: Polyester chips, dispersants, antioxidants, etc. are added in proportion, and after twin-screw co-extrusion, spinning, cooling, stretching, cutting and packaging, the desired fluff is formed.

[0137] (4) The use of AC and DC electrostatic field control technology to control flocking has solved the key technical problems of low flocking amount and slow flocking speed in the industry, and improved the quality of flocked products.

[0138] (5) Apply a spraying process to spray the three-proof additives onto the fabric surface to form an asymmetric wetted surface. The product has low preparation cost, good water repellency on the front, and can easily wipe away stains.

[0139] In step 1, β-cyclodextrin is modified using a silane coupling agent KH550. The β-cyclodextrin treated with the coupling agent is dissolved in an aqueous solution and ultrasonically treated in an ice-water bath for 1 hour to obtain a pretreated solution. The glass fiber cloth is then coated, and finally, the glass fiber is dried to obtain the modified glass fiber.

[0140] In step 4, a combined AC and DC electrostatic field control flocking technique is employed. The AC electrostatic generator produces an adjustable voltage of 120kV, while the DC electrostatic generator produces a voltage of 10kV. When the adhesive-coated fiberglass substrate continuously passes through the electrostatic flocking device, an electrostatic field is first formed by the two sets of electrodes of the device. Simultaneously, a large number of flock fibers fall from the chopped fiber storage bin, plunging vertically under the influence of the electrostatic field. Subsequently, the fibers penetrate the adhesive layer, achieving fiber fixation. The combined effect of the AC and DC electric fields solves the industry's technical problems of low flocking quantity and slow flocking speed, improving the quality of the flocked products. The flocking time is 4 seconds.

[0141] In step 5, a three-proof additive is applied to the surface of the pile using a spraying technique, giving the fabric asymmetric wetting properties on both sides. The three-proof additive used is a C8 fluorine-containing three-proof additive with a mass fraction of 6%, and the spraying sizing amount is 50g / m². 2 The baking temperature is 140℃ and the baking time is 60s.

[0142] The sound absorption function is mainly due to the fact that after electrostatic flocking, 86 million fibers are formed per square meter of the base fabric, creating tiny gaps. Sound waves are attenuated by reflection between these air pockets, and their energy is converted into heat, achieving a superior sound absorption effect. Combining glass fiber base fabric with electrostatic flocking to prepare sound-absorbing materials results in excellent sound absorption performance.

[0143] In Comparative Example 2, the adhesive and fleece were not treated with flame retardants, resulting in a wallpaper that lacked flame retardant properties and would ignite the entire room in the event of a fire. The limiting oxygen index (LOI) of the untreated wallpaper was 17%, while the LIOI of the wallpaper after flame retardant treatment was 27%.

[0144] The above description is merely a preferred embodiment of the present invention. By improving the three key elements of electrostatic flocking—the base fabric, adhesive, and flocking—and employing new preparation and post-processing techniques, a high-value-added wall covering with multiple functions such as flame retardancy, easy cleaning, and sound absorption has been achieved. It can be widely used in hotels, office buildings, homes, restaurants, KTVs, and other venues. The present invention can have various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A process for the production of fire-retardant, easy-to-clean, sound-absorbing electrostatic flocking glass fiber wall cloth, characterized in that, It comprises the following steps: (1) using glass fiber yarn to make glass fiber cloth, coating a layer of silane modified beta cyclodextrin on the surface of the glass fiber cloth to obtain modified glass fiber cloth; Coating a layer of silane modified beta cyclodextrin on the surface of the glass fiber cloth, specifically including: The beta cyclodextrin is modified by silane coupling agent KH550, and the beta cyclodextrin treated by the coupling agent is dissolved in an aqueous solution and treated by ultrasonic in an ice water bath to obtain a pretreated solution; The pretreated liquid after treatment is used to coat the glass fiber cloth, and the sizing rate is 20-60 g / m 2 Finally, the glass fiber is dried to obtain the modified glass fiber cloth. (2) using acrylate emulsion as raw material, using two ways of organic silicon graft modification and physical addition of phosphorus flame retardant to modify the adhesive, obtaining acrylate adhesive with excellent flame retardant function, coating the acrylate adhesive with excellent flame retardant function on the modified glass fiber cloth of step (1) to obtain glass fiber cloth coated with adhesive; Using acrylate emulsion as raw material, using two ways of organic silicon graft modification and physical addition of phosphorus flame retardant to modify the adhesive, specifically including: Vinyl silicone oil and methacrylate alkoxyl phosphate are added to the acrylate emulsion as reaction monomers, and diacetone acrylamide is added as a crosslinking monomer, then emulsifier and initiator are added, and ionic liquid flame retardant 1-butyl-3-methyl-imidazole hypophosphite is added at the same time, and polymerization is carried out, the polymerization temperature is 70-90℃, finally the acrylate adhesive with excellent flame retardant function is obtained; The acrylate adhesive with excellent flame retardant function is made of raw materials with the following mass percentage: Acrylate emulsion 45.7%-78.7%; Vinyl silicone oil 12-30%; Methacrylate alkoxyl phosphate 3-5%; Diacetone acrylamide 3-5%; Emulsifier 3-5%; 1-Butyl-3-methyl-imidazole hypophosphite 20-30%; Initiator 0.3-0.5%; (3) 3-hydroxyphenyl phosphoropropionic acid is used as a flame retardant, the flame retardant, dispersant and antioxidant are added in proportion, and a master batch is obtained by double screw extrusion and cooling and cutting, and the master batch is compounded with polyester chips to obtain flame-retardant polyester fluff by spinning, and the preparation of dye-free fluff is realized by using in-situ coloring technology; (4) using alternating current and direct current combined electrostatic field control flocking technology; (5) applying spraying process to spray carbon eight fluorine-containing three-proofing agent on the surface of the fabric to form an asymmetric wetting surface, and then baking to obtain flame-retardant, easy-to-clean, sound-absorbing and electrostatic flocking glass fiber wall cloth.

2. The process for production of flame retardant, easy to clean, sound absorbing electrostatic flocking glass wool wall covering as claimed in claim 1, wherein, In step (1), the glass fiber cloth is plain weave, twill or satin.

3. The process for production of fire retardant, easy to clean, sound absorbing electrostatic flocking glass wool wall covering as claimed in claim 1, wherein, In step (3), the mass ratio of 3-hydroxyphenyl phosphoropropionic acid, dispersant and antioxidant is 20~40:0.05~0.5:0.05~0.5, and the mass ratio of the master batch to polyester chips is 3:8~12.

4. The process for production of fire retardant, easy to clean, sound absorbing electrostatic flocking glass wool wall covering as claimed in claim 1, wherein, In step (4), the electrostatic field control flocking technology is used, specifically including: the voltage range of AC electrostatic generation is adjustable from 0 to 200 kV, the voltage range of DC electrostatic generator is adjustable from 0 to 10 kV, when the glass fiber base cloth coated with adhesive continuously passes through the electrostatic flocking device, the electrostatic field is formed by two groups of electrodes of the electrostatic flocking device, at the same time, a large amount of flock is dropped from top to bottom from the short-cut fiber storage bin, under the action of the electrostatic field, the flock is in a vertical diving state, and then the flock is pricked into the adhesive layer to realize the fixation of the flock.

5. The process for producing fire-retardant, easy-to-clean, sound-absorbing electrostatic flocking glass fiber wall cloth according to claim 4, characterized in that, In step (4), the electrostatic flocking device has a flocking time of 2-10 s.

6. The process for production of flame retardant, easy to clean, sound absorbing electrostatic flocking glass wool wall covering as claimed in claim 1, wherein, In step (5), the baking conditions are as follows: the baking temperature is 140-160℃, and the baking time is 40-80 s.

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