Blanket surface material and preparation method thereof

Abstract

The invention discloses a carpet surface material which comprises the following materials in parts by weight: 60-70 parts of antibacterial flame-retardant fibers, 30-40 parts of acrylic fibers, 15-25 parts of conductive filament fibers, 30-50 parts of acrylic acid composite liquid of organic silicon and 30-40 parts of saturated calcium chloride milk protein fiber solution. Antibacterial flame-retardant fibers and acrylic fibers are woven into a grid fabric according to the warp density range of 400-440 pieces / 10 cm and the weft density range of 210-230 pieces / 10 cm, conductive filament fibers are mutually crossed in the warp direction and the weft direction of the grid fabric to form a one-up-two-down left twill weave structure, and good air permeability is achieved; the method comprises the following steps of: dipping and softening a saturated calcium chloride milk protein fiber solution, dipping in an acrylic acid composite liquid of organic silicon, and covering a layer of waterproof film on the surface, so that the grid fabric is endowed with good waterproof and anti-pollution performance, and finally, the carpet surface material is obtained.

Description

Technical Field

[0001] The present invention relates to the field of textiles, and particularly to a blanket surface material and a preparation method thereof. Background Art

[0002] Conventional blankets include fine-drawn acrylic blankets, Raschel polyester blankets, acrylic fiber blankets, acrylic polyester blankets, modal cotton Raschel blankets, etc. Conventional blankets are mainly made of acrylic bulk yarn or polyester filament, woven by a double-needle bed Raschel warp knitting machine or a weft knitting machine for cutting looped pile, and then prepared in the order of printing and dyeing, steaming, water washing, drying and shaping, brushing, calendering, shearing, cutting, and edging. Conventional blankets have the advantages of bright color, soft hand feeling, good warmth retention, etc. However, the raw materials of these blankets are all pure chemical fibers, and their water absorption, air permeability and hand feeling cannot be compared with natural fibers. With the improvement of people's living standards, in addition to beauty and warmth, people's requirements for textiles have begun to shift towards comfort, environmental protection, and functional health care. Developing various functional textiles will become the mainstream of society.

[0003] The patent with the application number CN112160155B discloses a flame-retardant and antibacterial fabric, which modifies polyester fibers by adding antibacterial components and vermiculite: at high temperatures, the volume of vermiculite can expand rapidly, making it have good heat insulation effect and extremely high fire resistance time; the antibacterial component-modified polyester fibers can ensure the antibacterial property of textiles itself by physical antibacterial, but do not affect the surrounding environment, so that viruses cannot reproduce in textiles. Therefore, textiles will not cause self-infection of the human body, nor will they become a medium for cross-infection. Compared with antibacterial and flame-retardant fibers, the leachable antibacterial additive can not only kill the germs on textiles, but also act on the germs in the external environment of textiles. Compared with the leachable antibacterial additive, physical antibacterial will not cause drug resistance in the human body, will not penetrate into the human body through the skin like the leachable antibacterial additive, reduce the body's immunity, and will not produce cumulative toxic reactions. Polyester fibers and cotton fibers, as raw materials, have the disadvantages of poor wear resistance, easy deformation, weak acid and alkali resistance, and weak air permeability. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a blanket surface material and a preparation method thereof.

[0005] The object of the present invention can be achieved by the following technical solutions: A blanket surface material, comprising the following materials in parts by weight: 60-70 parts of antibacterial and flame-retardant fibers, 30-40 parts of acrylic fibers, 15-25 parts of conductive filament fibers, 30-50 parts of an acrylic composite solution of silicone, and 30-40 parts of a saturated calcium chloride milk protein fiber solution; The blanket surface material is prepared by the following steps: S1: Weave the antibacterial and flame-retardant fibers and acrylic fibers into a grid fabric with the warp density ranging from 400 to 440 threads per 10 cm and the weft density ranging from 210 to 230 threads per 10 cm. The conductive filament fibers cross each other in the warp and weft directions of the grid fabric to form a one-up-two-down left twill tissue structure. S2: Use a CTP-2000A type plasma quasi-glow discharge surface treatment machine to activate the surface of the grid fabric. Immerse the activated grid fabric in a saturated calcium chloride milk protein fiber solution and ultrasonicate for 30 min. Dip and roll it twice, control the liquor pickup rate at 70 - 80%, and dry it to obtain a grid fabric impregnated with the saturated calcium chloride milk protein fiber solution. S3: Immerse the grid fabric impregnated with the saturated calcium chloride milk protein fiber solution in an organosilicon acrylic composite solution and ultrasonicate for 30 min. Dip and roll it twice, control the liquor pickup rate at 80 - 90%, and dry it to obtain the blanket surface material.

[0006] Furthermore, the antibacterial and flame-retardant fibers are prepared through the following steps: A1: By weight, add 10 - 15 parts of natural vermiculite to 40 - 60 parts of ultrapure water and stir evenly. Then, use a magnetic stirrer to stir at a speed of 500 r / min at room temperature for 10 h to obtain a dispersion liquid. Add 20 - 30 parts of polyurethane powder, heat it in an oil bath at 85 - 95 °C, and stir at 400 r / min for 3 h to obtain a mixed liquid a. A2: By weight, add 15 - 25 parts of cellulose nanofibrils, 3 - 8 parts of antibacterial components and 3 - 5 parts of vinyltrimethylsilane to 30 - 50 parts of the mixed liquid a. Adjust the pH of the mixed liquid to neutral with a 10% mass fraction acetic acid solution. After mixing evenly, carry out vacuum degassing for 2 h to prepare a mixed spinning solution b. A3: Load the mixed spinning solution b onto a 10 mL syringe pump for electrospinning. The rate of the propulsion pump is 0.5 - 1 ml / L, the electrospinning voltage is 10 - 15 kV, the distance from the needle to the receiving plate is 10 - 15 cm, and aluminum foil is used for receiving. Finally, the antibacterial and flame-retardant fibers are obtained.

[0007] Furthermore, the cellulose nanofibrils are prepared through the following steps: B1: By weight, add 2 - 3 parts of cellulose and 80 - 100 parts of an 80% volume fraction ethanol solution to an autoclave containing 30 - 40 parts of subcritical water. Inject liquid CO2 to make the internal pressure of the autoclave reach 1 - 2 MPa. Set the temperature at 100 - 200 °C and react for 3 h to obtain a pretreatment mixture. Filter the pretreatment mixture through a 0.2 µm microporous filter under vacuum and vacuum dry it for 24 h to obtain pretreated cellulose. B2: Using a ball mill, grind the pretreated cellulose for 12 - 24 h under the conditions of a revolution speed of 300 r / min, a rotation speed of 360 r / min, and a forward and reverse commutation operation cycle of 30 min to obtain cellulose nanofibrils.

[0008] Furthermore, the antibacterial component is prepared through the following steps: C1: By weight, add 1 - 2 parts of acrylic acid, 3 - 5 parts of chitosan, and 40 - 50 parts of distilled water to a four - necked flask. Start magnetic stirring, set the rotation speed to 30 - 40 r / min, stir for 2 h, add 2 - 3 parts of EDC, adjust the stirring speed to 200 r / min, transfer the four - necked flask to a constant temperature water bath at 25 °C, introduce nitrogen, and react for 2 h. After the reaction, dialyze the obtained liquid for one week, change the water three times a day for the first 3 days and twice a day for the next 4 days to obtain intermediate a; The carboxyl group in acrylic acid and the amino group in chitosan undergo an esterification reaction under the catalysis of EDC to form an amide substance;

[0009] C2: Add an ethanol solution with a volume fraction of 80%, paraformaldehyde, and intermediate a to a reaction tank. After stirring and mixing, heat up to 65 - 70 °C, then add 2 - nitro - 5 - chlorophenol, stir and react for 8 h. After evaporating the solvent, crystals precipitate. Filter and recrystallize to obtain intermediate b, where the mass ratio of 2 - nitro - 5 - chlorophenol, intermediate a, paraformaldehyde, and the ethanol solution with a volume fraction of 80% is 160 - 170:170:42 - 43:330 - 400; The whole reaction is an aminomethylation reaction. The amino group in intermediate a first reacts with paraformaldehyde to form methylamine substances, and then undergoes a substitution reaction with the active hydrogen on the benzene ring to form aniline substances; C3: Add intermediate b, sodium hydroxide, and polyethylene glycol to a reaction kettle at the same time. After stirring and mixing, heat up to 70 - 80 °C, add pentamethylpiperidinol, react for 5 h, filter and wash. Evaporate and crystallize the filtrate and filter. Wash the obtained solid to neutral and then dry it to obtain intermediate c, where the mass ratio of intermediate b, the mass of pentamethylpiperidinol, sodium hydroxide, and polyethylene glycol is 340:210 - 230:12 - 20:3 - 5; The chlorine substituent on the benzene ring of intermediate b and the hydroxyl group on pentamethylpiperidinol undergo a nucleophilic substitution reaction under the catalysis of sodium hydroxide to form an ether bond; C4: Add intermediate c, sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol into the reaction kettle simultaneously. After stirring and mixing, heat up to 110 - 120 °C, dropwise add epichlorohydrin. After dropping, continue the reaction for 10 h, evaporate to crystallize and filter. Wash the obtained solid to neutrality and then dry it to obtain the antibacterial component, where the weight ratio of intermediate c, epichlorohydrin, sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol is 550:80 - 90:62 - 65:600 - 650; Under the catalysis of sodium hydroxide, the chlorine substituent in epichlorohydrin and the phenolic hydroxyl group in intermediate c undergo a nucleophilic substitution reaction to form an ether bond.

[0010] Furthermore, the conductive filament fiber is prepared through the following steps: Use the airflow pulverization method to pulverize 40 - 50 parts of bamboo charcoal into nanoparticles with a particle size of 400 - 500 nm. Then mix the nanoparticles, 5 - 10 parts of sodium dodecyl sulfate, and 60 - 80 parts of polyamide resin, and ultrasonically disperse for 1 h to prepare a bamboo charcoal conductive dispersion. After melting extrusion, composite spinning, and cooling, obtain the conductive filament fiber.

[0011] Furthermore, the acrylic composite liquid containing silicone is prepared through the following steps: A mixed solution obtained by dissolving 30 - 50 parts of polyisocyanate, 30 - 50 parts of polyether polyol, 10 - 30 parts of dimethylsilane, and 10 - 20 parts of acrylic acid in 200 - 300 parts of acetone by weight.

[0012] The beneficial effects of the present invention: The three fibers are woven into a grid fabric by the antibacterial and flame - retardant fiber and acrylic fiber with the warp density range of 400 - 440 threads / 10 cm and the weft density range of 210 - 230 threads / 10 cm. The conductive filament fibers cross each other in the warp and weft directions of the grid fabric, forming a one - up - two - down left twill tissue structure, and having good air permeability; Among them, the antibacterial and flame-retardant fiber is obtained by modifying polyurethane with vermiculite and antibacterial components. Among them, vermiculite will rapidly expand in volume at high temperatures, making it have good heat insulation effect and extremely high fire resistance time. The antibacterial component contains chitosan group, pentamethylpiperidine group, epoxy group, α,β-unsaturated carboxyl group. Among them, chitosan and pentamethylpiperidine have good antibacterial and anti-aging properties. The epoxy group and α,β-unsaturated carboxyl group can react with polyurethane, and can introduce antibacterial and anti-aging groups onto polyurethane, so that the antibacterial components will not fall off due to the passage of time. At the same time, it also acts as a linker to prevent the decomposition of polyurethane and make the fiber prone to breakage. The addition of cellulose can change the flexibility of polyurethane and make the fiber softer and more comfortable; acrylic fiber is similar to wool fiber, has good heat preservation and wear resistance properties, and is often used as a substitute for wool due to its low price; bamboo charcoal has weak electrical conductivity, plays a role in anti-static and shielding electromagnetic radiation, and at the same time has strong adsorption ability, can purify air, eliminate odors, absorb moisture and prevent mildew, inhibit bacteria and repel insects. The conductive fiber made of bamboo charcoal raw materials can dehumidify and absorb sweat when contacting the grid fabric and the human body, promote blood circulation and metabolism of the human body, and relieve fatigue. Detailed implementation mode

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention. Embodiment

[0014] A kind of cellulose nanofiber is prepared by the following steps; By weight, take 2 parts of cellulose and add it to 80 parts of ethanol solution with a volume fraction of 80%, place it in an autoclave filled with subcritical water, inject liquid CO2 to make the internal pressure of the autoclave reach 1 MPa; set the temperature at 100 °C, react for 3 h to obtain a pretreatment mixture, and the pretreatment mixture is filtered through a 0.2 µm microporous filter under vacuum and dried in vacuum for 24 h to obtain pretreated cellulose; Use a ball mill to grind the pretreated cellulose for 12 h under the conditions of 300 r / min for revolution, 360 r / min for rotation, and a forward and reverse commutation operation period of 30 min to obtain cellulose nanofibers. Embodiment

[0015] A kind of cellulose nanofiber is prepared by the following steps; By weight, 2.5 parts of cellulose are added to 90 parts of an ethanol solution with a volume fraction of 80%, placed in an autoclave containing subcritical water, and liquid CO2 is injected to make the internal pressure of the autoclave reach 1.5 MPa; the temperature is set at 150 °C, and the reaction is carried out for 3 h to obtain a pretreatment mixture. The pretreatment mixture is filtered through a 0.2 µm microporous filter under vacuum and dried in vacuum for 24 h to obtain pretreated cellulose; The pretreated cellulose is ground for 16 h by a ball mill under the conditions of a revolution speed of 300 r / min, a rotation speed of 360 r / min, and a forward and reverse commutation operation cycle of 30 min to obtain cellulose nanofibrils. Example

[0016] A kind of cellulose nanofibril is prepared by the following steps; By weight, 3 parts of cellulose are added to 100 parts of an ethanol solution with a volume fraction of 80%, placed in an autoclave containing subcritical water, and liquid CO2 is injected to make the internal pressure of the autoclave reach 2 MPa; the temperature is set at 200 °C, and the reaction is carried out for 3 h to obtain a pretreatment mixture. The pretreatment mixture is filtered through a 0.2 µm microporous filter under vacuum and dried in vacuum for 24 h to obtain pretreated cellulose; The pretreated cellulose is ground for 24 h by a ball mill under the conditions of a revolution speed of 300 r / min, a rotation speed of 360 r / min, and a forward and reverse commutation operation cycle of 30 min to obtain cellulose nanofibrils. Example

[0017] An antibacterial component is prepared by the following steps; By weight, 1 part of acrylic acid, 3 parts of chitosan and 40 parts of distilled water are added to a four-necked flask, magnetic stirring is started, the rotation speed is set at 30 r / min, and stirring is carried out for 2 h. Then 2 parts of EDC are added, the stirring speed is adjusted to 200 r / min, the four-necked flask is transferred to a constant temperature water bath at 25 °C, nitrogen is introduced, and the reaction is carried out for 2 h. After the reaction is completed, the obtained liquid is dialyzed for one week, changing water three times a day for the first 3 days and twice a day for the next 4 days to obtain intermediate a; An ethanol solution with a volume fraction of 80%, paraformaldehyde and intermediate a are added to a reaction tank, stirred and mixed, then heated to 65 °C, and 2-nitro-5-chlorophenol is added, followed by stirring and reacting for 8 h. After the solvent is distilled off, crystals are precipitated, filtered and recrystallized to obtain intermediate b, where the mass ratio of 2-nitro-5-chlorophenol, intermediate a, paraformaldehyde and the ethanol solution with a volume fraction of 80% is 160:170:42:330; Intermediate b, sodium hydroxide, and polyethylene glycol were simultaneously added to a reaction kettle. After stirring and mixing, the temperature was raised to 70 °C, and pentamethylpiperidinol was added. The reaction was carried out for 5 h, followed by filtration and washing. The filtrate was subjected to evaporation crystallization and filtration. The obtained solid was washed to neutrality and then dried to obtain intermediate c, where the mass ratio of intermediate b, pentamethylpiperidinol, sodium hydroxide, and polyethylene glycol was 340:210:12:3; Intermediate c, a sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol were simultaneously added to a reaction kettle. After stirring and mixing, the temperature was raised to 110 °C, and epichlorohydrin was added dropwise. After the addition was complete, the reaction was continued for 10 h. Evaporation crystallization and filtration were carried out. The obtained solid was washed to neutrality and then dried to obtain the antibacterial component, where the weight ratio of intermediate c, epichlorohydrin, a sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol was 550:80:62:600. Example

[0018] An antibacterial component is prepared by the following steps; By weight, 1.5 parts of acrylic acid, 4 parts of chitosan, and 45 parts of distilled water were added to a four-necked flask. Magnetic stirring was started, and the rotation speed was set to 35 r / min. Stirring was carried out for 2 h, 2.5 parts of EDC was added, and the stirring speed was adjusted to 200 r / min. The four-necked flask was transferred to a constant temperature water bath at 25 °C, and nitrogen was introduced. The reaction was carried out for 2 h. After the reaction was completed, the obtained liquid was dialyzed for one week, changing the water three times a day for the first 3 days and twice a day for the next 4 days to obtain intermediate a; An ethanol solution with a volume fraction of 80%, paraformaldehyde, and intermediate a were added to a reaction tank. After stirring and mixing, the temperature was raised to 67 °C, and 2-nitro-5-chlorophenol was added. Stirring reaction was carried out for 8 h. After the solvent was distilled off, crystals were precipitated. Filtration and recrystallization were carried out to obtain intermediate b, where the mass ratio of 2-nitro-5-chlorophenol, intermediate a, paraformaldehyde, and an ethanol solution with a volume fraction of 80% was 165:170:43:350; Intermediate b, sodium hydroxide, and polyethylene glycol were simultaneously added to a reaction kettle. After stirring and mixing, the temperature was raised to 75 °C, and pentamethylpiperidinol was added. The reaction was carried out for 5 h, followed by filtration and washing. The filtrate was subjected to evaporation crystallization and filtration. The obtained solid was washed to neutrality and then dried to obtain intermediate c, where the mass ratio of intermediate b, pentamethylpiperidinol, sodium hydroxide, and polyethylene glycol was 340:220:15:4; Intermediate c, a sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol were simultaneously added to a reaction kettle. After stirring and mixing, the temperature was raised to 115 °C, and epichlorohydrin was added dropwise. After the addition was complete, the reaction was continued for 10 h. Evaporation crystallization and filtration were carried out. The obtained solid was washed to neutrality and then dried to obtain the antibacterial component, where the weight ratio of intermediate c, epichlorohydrin, a sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol was 550:85:63:620. Example

[0019] An antibacterial component is prepared by the following steps; By weight, add 2 parts of acrylic acid, 5 parts of chitosan and 50 parts of distilled water into a four-necked flask. Start magnetic stirring, set the rotation speed to 40 r / min, stir for 2 h, add 3 parts of EDC, adjust the stirring speed to 200 r / min, transfer the four-necked flask into a constant temperature water bath at 25 °C, introduce nitrogen, react for 2 h. After the reaction is completed, dialyze the obtained liquid for one week, change water three times a day for the first 3 days and twice a day for the next 4 days to obtain intermediate a; Add an ethanol solution with a volume fraction of 80%, paraformaldehyde and intermediate a into a reaction tank. After stirring and mixing, heat up to 70 °C, then add 2-nitro-5-chlorophenol, stir and react for 8 h. After evaporating the solvent, crystals are precipitated, filtered and recrystallized to obtain intermediate b, where the mass ratio of 2-nitro-5-chlorophenol, intermediate a, paraformaldehyde and the ethanol solution with a volume fraction of 80% is 170:170:43:400; Add intermediate b, sodium hydroxide and polyethylene glycol into a reaction kettle at the same time. After stirring and mixing, heat up to 80 °C, add pentamethyldipiperidinol, react for 5 h, filter and wash. Evaporate and crystallize the filtrate and filter. Wash the obtained solid to neutral and then dry it to obtain intermediate c, where the mass ratio of intermediate b, pentamethyldipiperidinol, sodium hydroxide and polyethylene glycol is 340:230:20:5; Add intermediate c, a sodium hydroxide solution with a mass concentration of 40% and absolute ethanol into a reaction kettle at the same time. After stirring and mixing, heat up to 120 °C, dropwise add epichlorohydrin. After dropping, continue to react for 10 h. Evaporate and crystallize the filtrate and filter. Wash the obtained solid to neutral and then dry it to obtain the antibacterial component, where the weight ratio of intermediate c, epichlorohydrin, the sodium hydroxide solution with a mass concentration of 40% and absolute ethanol is 550:90:65:650. Example

[0020] An antibacterial and flame-retardant fiber is prepared by the following steps; By weight, add 10 parts of natural vermiculite into 40 parts of ultrapure water and stir evenly. Then use a magnetic stirrer to stir at a rotation speed of 500 r / min at room temperature for 10 h to obtain a dispersion liquid. Add 20 parts of polyurethane powder, set the temperature to 85 °C and the rotation speed to 400 r / min, and heat and stir in an oil bath for 3 h to obtain a mixed liquid a; Add 15 parts of the cellulose nanofibrils obtained in Example 1, 3 parts of the antibacterial component obtained in Example 4 and 3 parts of vinyltrimethylsilane into 30 parts of the mixed liquid a, and adjust the pH of the mixed liquid to neutral with a 10% acetic acid solution by mass. After mixing evenly, carry out vacuum degassing for 2 h to prepare a mixed spinning solution b; The mixed spinning solution b was filled into a 10 mL syringe pump for electrospinning. The rate of the propulsion pump was 0.5 ml / L, the spinning voltage was 10 kV, the distance from the needle to the receiving plate was 10 cm, and aluminum foil was used for receiving. Finally, antibacterial and flame-retardant fibers were obtained. Example

[0021] An antibacterial and flame-retardant fiber was prepared by the following steps; By weight, 13 parts of natural vermiculite were added to 50 parts of ultrapure water and stirred evenly. Then, using a magnetic stirrer at a rotation speed of 500 r / min, it was stirred at room temperature for 10 h to obtain a dispersion liquid. 25 parts of polyurethane powder were added, the temperature was set at 90 °C, the rotation speed was 400 r / min, and it was heated and stirred in an oil bath for 3 h to obtain a mixed liquid a; To 40 parts of the mixed liquid a, 20 parts of the cellulose nanofibrils obtained in Example 2, 5 parts of the antibacterial component obtained in Example 5, and 4 parts of vinyltrimethylsilane were added, and the pH of the mixed liquid was adjusted to neutral with a 10% by mass acetic acid solution. After mixing evenly, it was degassed under vacuum for 2 h to prepare a mixed spinning solution b; The mixed spinning solution b was filled into a 10 mL syringe pump for electrospinning. The rate of the propulsion pump was 0.7 ml / L, the spinning voltage was 12 kV, the distance from the needle to the receiving plate was 13 cm, and aluminum foil was used for receiving. Finally, antibacterial and flame-retardant fibers were obtained. Example

[0022] An antibacterial and flame-retardant fiber was prepared by the following steps; By weight, 15 parts of natural vermiculite were added to 60 parts of ultrapure water and stirred evenly. Then, using a magnetic stirrer at a rotation speed of 500 r / min, it was stirred at room temperature for 10 h to obtain a dispersion liquid. 30 parts of polyurethane powder were added, the temperature was set at 95 °C, the rotation speed was 400 r / min, and it was heated and stirred in an oil bath for 3 h to obtain a mixed liquid a; To 50 parts of the mixed liquid a, 25 parts of the cellulose nanofibrils obtained in Example 3, 8 parts of the antibacterial component obtained in Example 6, and 5 parts of vinyltrimethylsilane were added, and the pH of the mixed liquid was adjusted to neutral with a 10% by mass acetic acid solution. After mixing evenly, it was degassed under vacuum for 2 h to prepare a mixed spinning solution b; The mixed spinning solution b was filled into a 10 mL syringe pump for electrospinning. The rate of the propulsion pump was 1 ml / L, the spinning voltage was 15 kV, the distance from the needle to the receiving plate was 15 cm, and aluminum foil was used for receiving. Finally, antibacterial and flame-retardant fibers were obtained. Example

[0023] A conductive filament fiber was prepared by the following steps; By weight, 40 parts of bamboo charcoal are pulverized into nanoparticles with a size of 400 nm by air jet milling, and then the nanoparticles, 5 parts of sodium dodecyl sulfate and 60 parts of polyamide resin are mixed and ultrasonically dispersed for 1 h to prepare a bamboo charcoal conductive dispersion, followed by melt extrusion, composite spinning and cooling to obtain conductive filament fibers. Example

[0024] A conductive filament fiber is prepared by the following steps; By weight, 45 parts of bamboo charcoal are pulverized into nanoparticles with a size of 450 nm by air jet milling, and then the nanoparticles, 7 parts of sodium dodecyl sulfate and 70 parts of polyamide resin are mixed and ultrasonically dispersed for 1 h to prepare a bamboo charcoal conductive dispersion, followed by melt extrusion, composite spinning and cooling to obtain conductive filament fibers. Example

[0025] A conductive filament fiber is prepared by the following steps; By weight, 50 parts of bamboo charcoal are pulverized into nanoparticles with a size of 500 nm by air jet milling, and then the nanoparticles, 10 parts of sodium dodecyl sulfate and 80 parts of polyamide resin are mixed and ultrasonically dispersed for 1 h to prepare a bamboo charcoal conductive dispersion, followed by melt extrusion, composite spinning and cooling to obtain conductive filament fibers. Example

[0026] An acrylic composite liquid containing silicone; By weight, it is a mixed solution obtained by dissolving 30 parts of polyisocyanate, 30 parts of polyether polyol, 10 parts of dimethylsilane and 10 parts of acrylic acid in 200 parts of acetone; Example

[0027] An acrylic composite liquid containing silicone; By weight, it is a mixed solution obtained by dissolving 40 parts of polyisocyanate, 40 parts of polyether polyol, 20 parts of dimethylsilane and 15 parts of acrylic acid in 240 parts of acetone; Example

[0028] An acrylic composite liquid containing silicone; By weight, it is a mixed solution obtained by dissolving 50 parts of polyisocyanate, 50 parts of polyether polyol, 30 parts of dimethylsilane and 20 parts of acrylic acid in 300 parts of acetone; Example

[0029] A carpet surface material, including the following materials by weight: 60 parts of the antibacterial and flame-retardant fibers obtained in Example 7, 35 parts of acrylic fibers, 15 parts of the conductive filament fibers obtained in Example 10, 30 parts of the acrylic composite liquid containing silicone obtained in Example 13, and 35 parts of a saturated calcium chloride milk protein fiber solution; The antibacterial and flame-retardant fibers obtained in Example 7 and acrylic fibers are woven into a grid fabric with the warp density ranging from 400 threads / 10 cm and the weft density ranging from 210 threads / 10 cm. The conductive filament fibers obtained in Example 10 cross each other in the warp and weft directions of the grid fabric to form a one-up-two-down left twill tissue structure; The grid fabric is surface-activated by a CTP-2000A type plasma quasi-glow discharge surface treatment machine, and the activated grid fabric is impregnated in a saturated calcium chloride milk protein fiber solution and ultrasonicated for 30 min, then impregnated and rolled twice, with the liquor pickup rate controlled at 70%, and dried to obtain a grid fabric impregnated with the saturated calcium chloride milk protein fiber solution; The grid fabric impregnated with the saturated calcium chloride milk protein fiber solution is impregnated in the silicone acrylate composite solution obtained in Example 13 and ultrasonicated for 30 min, then impregnated and rolled twice, with the liquor pickup rate controlled at 80%, and dried to obtain the blanket surface material. Example

[0030] A blanket surface material, comprising the following materials in parts by weight: 65 parts of the antibacterial and flame-retardant fibers obtained in Example 8, 35 parts of acrylic fibers, 20 parts of the conductive filament fibers obtained in Example 11, 40 parts of the silicone acrylate composite solution obtained in Example 14, and 35 parts of the saturated calcium chloride milk protein fiber solution; The blanket surface material is prepared by the following steps: The antibacterial and flame-retardant fibers obtained in Example 8 and acrylic fibers are woven into a grid fabric with the warp density ranging from 420 threads / 10 cm and the weft density ranging from 220 threads / 10 cm. The conductive filament fibers obtained in Example 11 cross each other in the warp and weft directions of the grid fabric to form a one-up-two-down left twill tissue structure; The grid fabric is surface-activated by a CTP-2000A type plasma quasi-glow discharge surface treatment machine, and the activated grid fabric is impregnated in a saturated calcium chloride milk protein fiber solution and ultrasonicated for 30 min, then impregnated and rolled twice, with the liquor pickup rate controlled at 70-80%, and dried to obtain a grid fabric impregnated with the saturated calcium chloride milk protein fiber solution; The grid fabric impregnated with the saturated calcium chloride milk protein fiber solution is impregnated in the silicone acrylate composite solution obtained in Example 14 and ultrasonicated for 30 min, then impregnated and rolled twice, with the liquor pickup rate controlled at 80-90%, and dried to obtain the blanket surface material. Example

[0031] A blanket surface material, comprising the following materials in parts by weight: 70 parts of the antibacterial and flame-retardant fibers obtained in Example 9, 40 parts of acrylic fibers, 25 parts of the conductive filament fibers obtained in Example 12, 50 parts of the silicone acrylate composite solution obtained in Example 15, and 30-40 parts of the saturated calcium chloride milk protein fiber solution; The blanket surface material is prepared by the following steps: The antibacterial and flame-retardant fibers obtained in Example 9 and acrylic fibers are woven into a mesh fabric with a warp density range of 440 threads / 10 cm and a weft density range of 210 - 230 threads / 10 cm. The conductive filament fibers obtained in Example 12 cross each other in the warp and weft directions of the mesh fabric to form a one-up-two-down left twill tissue structure; The mesh fabric is surface-activated using a CTP - 2000A type plasma quasi-glow discharge surface treatment machine, and the activated mesh fabric is impregnated in a saturated calcium chloride milk protein fiber solution for 30 min by ultrasonic treatment, then impregnated and rolled twice, with the liquor pickup rate controlled at 70 - 80%, and dried to obtain a mesh fabric impregnated with a saturated calcium chloride milk protein fiber solution; The mesh fabric impregnated with a saturated calcium chloride milk protein fiber solution is impregnated in the silicone acrylate composite solution obtained in Example 15 for 30 min by ultrasonic treatment, then impregnated and rolled twice, with the liquor pickup rate controlled at 80 - 90%, and dried to obtain a blanket surface material.

[0032] The fabrics obtained in Examples 16, 17, and 18 are subjected to a limiting oxygen (OL) test, a vertical and horizontal burning test to determine the fire protection level, a softness test, an antibacterial performance test using the JISZ2801 standard (with Escherichia coli as the test strain), a wear resistance test, a tensile strength test (breaking strength dN / tex), a corrosion resistance test, a breathability test according to the standard "GB / T 5453 Determination of breathability of textile mesh fabrics", and a heat preservation performance test according to the GB / T 11048 - 1989 standard. The results are shown in the following table:

[0033] As can be seen from the above table, the limiting oxygen index of the fabric obtained in the present invention is higher than the oxygen content in the air, and the fire protection level reaches V - 1 level, with excellent flame retardant performance; the softness factor is above 2, having good softness; the antibacterial efficiency is close to 99%, with excellent performance; the wear resistance test can reach more than 2000 r, higher than the wear resistance of general polyurethanes; the breaking strength is about 1 dN / tex, having good elasticity and strength; the treatment with acid and alkali solutions does not cause deformation to the fabric, with good acid and alkali resistance, the air permeability rate is about 38, higher than 20% of general mesh fabrics, with good air permeability performance, and the thermal conductivity coefficient is lower than 0.1 W / m˙℃, which can achieve a good heat preservation effect.

[0034] The above content is only an example and explanation of the concept of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the concept of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

Claims

1. A carpet surface material, characterized in that, It includes the following materials in parts by weight: 60 - 70 parts of antibacterial and flame - retardant fibers, 30 - 40 parts of acrylic fibers, 15 - 25 parts of conductive filament fibers, 30 - 50 parts of silicone - acrylic composite liquid, and 30 - 40 parts of saturated calcium chloride milk protein fiber solution; The blanket surface material is prepared through the following steps: S1: The antibacterial and flame - retardant fibers and acrylic fibers are woven into a grid fabric with the warp density range of 400 - 440 threads / 10 cm and the weft density range of 210 - 230 threads / 10 cm. The conductive filament fibers cross each other in the warp and weft directions of the grid fabric to form a one - up - two - down left twill tissue structure; S2: Use a CTP - 2000A type plasma quasi - glow discharge surface treatment machine to activate the surface of the grid fabric. Immerse the activated grid fabric in the saturated calcium chloride milk protein fiber solution and ultrasonicate for 30 min, dip and roll twice, control the liquor pickup rate at 70 - 80%, and dry to obtain the grid fabric impregnated with the saturated calcium chloride milk protein fiber solution; S3: Immerse the grid fabric impregnated with the saturated calcium chloride milk protein fiber solution in the silicone - acrylic composite liquid and ultrasonicate for 30 min, dip and roll twice, control the liquor pickup rate at 80 - 90%, and dry to obtain the blanket surface material.

2. The carpet surface material according to claim 1, characterized in that: The antibacterial and flame - retardant fibers are prepared through the following steps: A1: By weight, add 10 - 15 parts of natural vermiculite to 40 - 60 parts of ultrapure water and stir evenly. Then, use a magnetic stirrer to stir at a speed of 500 r / min at room temperature for 10 h to obtain a dispersion liquid. Add 20 - 30 parts of polyurethane powder, heat in an oil bath at 85 - 95 °C and stir at 400 r / min for 3 h to obtain a mixed liquid a; A2: By weight, add 15 - 25 parts of cellulose nanofibrils, 3 - 8 parts of antibacterial components and 3 - 5 parts of vinyltrimethylsilane to 30 - 50 parts of the mixed liquid a, and adjust the pH of the mixed liquid to neutral with a 10% mass fraction acetic acid solution. After mixing evenly, carry out vacuum degassing for 2 h to prepare a mixed spinning solution b; A3: Load the mixed spinning solution b onto a 10 mL syringe pump for electrospinning. The rate of the propulsion pump is 0.5 - 1 ml / L, the spinning voltage is 10 - 15 kV, the distance from the needle to the receiving plate is 10 - 15 cm, and use an aluminum foil for receiving to finally obtain the antibacterial and flame - retardant fibers.

3. The carpet surface material according to claim 2, characterized in that: The cellulose nanofibrils are prepared through the following steps: B1: By weight, add 2 - 3 parts of cellulose and 80 - 100 parts of an 80% volume fraction ethanol solution to an autoclave containing 30 - 40 parts of subcritical water. Inject liquid CO2 to make the internal pressure of the autoclave reach 1 - 2 MPa, set the temperature at 100 - 200 °C, and react for 3 h to obtain a pretreatment mixture. The pretreatment mixture is filtered through a 0.2 µm microporous filter under vacuum and vacuum - dried for 24 h to obtain pretreated cellulose; B2: Use a ball mill to grind the pretreated cellulose for 12 - 24 h under the conditions of a revolution speed of 300 r / min, a rotation speed of 360 r / min, and a forward - reverse commutation operation period of 30 min to obtain cellulose nanofibrils.

4. The carpet surface material according to claim 2, wherein: The antibacterial components are prepared through the following steps: C1: By weight, add 1 - 2 parts of acrylic acid, 3 - 5 parts of chitosan, and 40 - 50 parts of distilled water into a four-necked flask. Start magnetic stirring, set the rotation speed to 30 - 40 r / min, stir for 2 h, add 2 - 3 parts of EDC, adjust the stirring speed to 200 r / min, transfer the four-necked flask into a constant temperature water bath at 25 °C, introduce nitrogen, and react for 2 h. After the reaction is completed, dialyze the obtained liquid for one week, change water three times a day for the first 3 days and twice a day for the next 4 days to obtain intermediate a; C2: Add an ethanol solution with a volume fraction of 80%, paraformaldehyde, and intermediate a into a reaction kettle. After stirring and mixing, heat up to 65 - 70 °C, then add 2-nitro-5-chlorophenol, stir and react for 8 h. After distilling off the solvent, crystals precipitate. Filter and recrystallize to obtain intermediate b, where the mass ratio of 2-nitro-5-chlorophenol, intermediate a, paraformaldehyde, and the ethanol solution with a volume fraction of 80% is 160 - 170:170:42 - 43:330 - 400; C3: Add intermediate b, sodium hydroxide, and polyethylene glycol into a reaction kettle simultaneously. After stirring and mixing, heat up to 70 - 80 °C, add pentamethyldiethanolamine, react for 5 h, filter and wash. Evaporate and crystallize the filtrate and filter. Wash the obtained solid to neutral and then dry to obtain intermediate c, where the mass ratio of intermediate b, pentamethyldiethanolamine, sodium hydroxide, and polyethylene glycol is 340:210 - 230:12 - 20:3 - 5; C4: Add intermediate c, a sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol into a reaction kettle simultaneously. After stirring and mixing, heat up to 110 - 120 °C, dropwise add epichlorohydrin. After dropping, continue to react for 10 h. Evaporate and crystallize and filter. Wash the obtained solid to neutral and then dry to obtain the antibacterial component, where the weight ratio of intermediate c, epichlorohydrin, the sodium hydroxide solution with a mass concentration of 40%, and absolute ethanol is 550:80 - 90:62 - 65:600 - 650.

5. The carpet surface material according to claim 1, characterized in that: The conductive filament fiber is prepared through the following steps: By weight, use the airflow pulverization method to pulverize 40 - 50 parts of bamboo charcoal into nanoparticles with a particle size of 400 - 500 nm. Then mix the nanoparticles, 5 - 10 parts of sodium dodecyl sulfate, and 60 - 80 parts of polyamide resin, and ultrasonically disperse for 1 h to prepare a bamboo charcoal conductive dispersion. Melt, extrude, compound, spin, and cool to obtain the conductive filament fiber.

6. The carpet surface material according to claim 1, wherein The acrylic composite liquid containing silicone is prepared through the following steps: A mixed solution obtained by dissolving 30 - 50 parts of polyisocyanate, 30 - 50 parts of polyether polyol, 10 - 30 parts of dimethylsilane, and 10 - 20 parts of acrylic acid in 200 - 300 parts of acetone by weight.

7. The preparation method of a carpet surface material according to claim 1, characterized in that, The specific preparation steps are as follows: S1: Weave the antibacterial and flame-retardant fiber and acrylic fiber into a grid fabric with a warp density range of 400 - 440 threads / 10 cm and a weft density range of 210 - 230 threads / 10 cm. The conductive filament fibers cross each other in the warp and weft directions of the grid fabric to form a one-up-two-down left twill tissue structure; S2: The grid fabric is surface-activated by using a CTP-2000A type plasma quasi-glow discharge surface treatment machine, and the activated grid fabric is immersed in a saturated calcium chloride milk protein fiber solution for 30 min of ultrasonic treatment, then dip-dyed and padded twice, with the liquor pickup rate controlled at 70-80%, and then dried to obtain the grid fabric impregnated with the saturated calcium chloride milk protein fiber solution; S3: The grid fabric impregnated with the saturated calcium chloride milk protein fiber solution is immersed in an organosilicon acrylic composite solution for 30 min of ultrasonic treatment, then dip-dyed and padded twice, with the liquor pickup rate controlled at 80-90%, and then dried to obtain the blanket surface material.

Images