CN113981710A - Preparation method of artificial synthetic leather containing nitrogen-containing titanium dioxide - Google Patents
Preparation method of artificial synthetic leather containing nitrogen-containing titanium dioxide Download PDFInfo
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- CN113981710A CN113981710A CN202111392201.7A CN202111392201A CN113981710A CN 113981710 A CN113981710 A CN 113981710A CN 202111392201 A CN202111392201 A CN 202111392201A CN 113981710 A CN113981710 A CN 113981710A
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- titanium dioxide
- nitrogen
- containing titanium
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims description 64
- 239000004408 titanium dioxide Substances 0.000 title claims description 32
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 title claims description 29
- 239000000463 material Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000010985 leather Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004049 embossing Methods 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 claims 1
- 239000004332 silver Substances 0.000 abstract description 24
- 229910052709 silver Inorganic materials 0.000 abstract description 24
- -1 silver ions Chemical class 0.000 abstract description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 10
- 230000036541 health Effects 0.000 abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 5
- IWLUJCZGMDWKRT-UHFFFAOYSA-N azane oxygen(2-) titanium(4+) Chemical compound N.[O-2].[Ti+4].[O-2] IWLUJCZGMDWKRT-UHFFFAOYSA-N 0.000 abstract description 4
- 206010020751 Hypersensitivity Diseases 0.000 abstract description 2
- 208000026935 allergic disease Diseases 0.000 abstract description 2
- 230000007815 allergy Effects 0.000 abstract description 2
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- 238000005259 measurement Methods 0.000 abstract 1
- 241000700605 Viruses Species 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
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- 108091005804 Peptidases Proteins 0.000 description 3
- 239000004365 Protease Substances 0.000 description 3
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 3
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
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- 238000006757 chemical reactions by type Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000002540 macrophage Anatomy 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000194107 Bacillus megaterium Species 0.000 description 1
- 230000000172 allergic effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
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- 102000004169 proteins and genes Human genes 0.000 description 1
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- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/14—Furniture, upholstery
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention belongs to the technical field of artificial leather, in particular to a method for preparing artificial leather containing nitrogen titanium dioxide, which aims at solving the problems that the existing silver ions can not be used for people with silver allergy, can not use excessive measurement, can be harmful to human bodies, has the aging effect of only 90 days and has short protection time, and provides the following scheme, which comprises the following steps: s1, discharging: after the base material is qualified, the base material is arranged on a machine for preparation before production, and S101, raw material preparation is carried out; s102, raw material inspection, the invention can be applied to seats and door plates arranged in automobiles, and can also be applied to the back cushions and seat coating leather of public fitness equipment, cushions of public bicycles, public seats and seats of large-scale transportation vehicles, and can carry out auxiliary work when part of epidemic prevention and disinfection work is careless, and simultaneously simplify disinfection procedures and reduce environmental and human health influences caused by overuse of disinfectant.
Description
Technical Field
The invention relates to the technical field of artificial leather, in particular to a preparation method of artificial leather containing nitrogen titanium dioxide.
Background
Silver ions are cations carrying positive charges, formed by electron transfer through chemical reaction, and generally exist in the form of aqueous solution. The solution was colorless and transparent without any solid particles. Silver is one of trace elements in human tissues, trace silver is harmless to human bodies, and drinking water with silver ion concentration lower than 0.1ppm does not cause adverse effects on human bodies according to the fourth edition of drinking water quality guidance standard of world health organization newly issued by WHO (ppm is an expression method of solute mass fraction, 1 milligram of solute is contained in 1 liter of water solution, and g/m3 or mg/L).
According to the determination, when the Ag + content in the water is 0.01ppm, the bacillus megaterium in the water can be completely killed, and new flora can not be propagated within 90 days. In addition, the research also finds that silver ions can cause virus death by coagulating protein molecules of the virus and binding electron donors on DNA molecules of the virus, and the silver is combined with water, can be decomposed into particles of 0.005-0.015 nm (very small, can pass through glass) and can be dissolved in the water in the form of silver ions. The sterilization principle is as follows: the chemical structure of silver determines that the silver has higher catalytic capability, and the reduction potential of the silver in a high oxidation state is extremely high enough to generate atomic oxygen in the surrounding space. The atomic oxygen can provide oxygen in water, and has strong oxidizing property to sterilize. When a trace amount of silver ions reach the cell membrane of the microorganism, the silver ions have negative charges, and the silver ions can strongly attract sulfydryl on protease in the bacterial body by virtue of Coulomb attraction, and the silver ions and the sulfydryl are firmly adsorbed and rapidly combined with the protease to solidify the protease, so that the activity of cell synthase is destroyed, and the cell loses the division and proliferation capacity and dies. When the bacteria are killed by Ag, the Ag is dissociated from the bacterial corpses and then contacts with other bacteria, and the process is carried out repeatedly. This is the reason for the long-lasting bactericidal activity of silver. According to the determination, when the Ag content in the water is 0.01mg/L, the bacillus in the water can be completely killed, new flora can not be propagated for 90 days, but silver ions can not be used for people with silver allergy, the silver ions can not be excessively metered, the silver ions are harmful to human bodies, the aging is only 90 days, and the protection time is short, so the method for preparing the artificial synthetic leather containing the nitrogen titanium dioxide is provided, and is used for solving the problems.
Disclosure of Invention
The invention aims to solve the defects that silver ions cannot be used for silver allergic people, cannot be used for over-metering, is harmful to human bodies, has only 90 days of aging and has short protection time in the prior art, and provides a method for preparing artificial synthetic leather containing titanium dioxide.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for preparing artificial leather containing nitrogen titanium dioxide comprises the following steps:
s1, discharging: the base material is arranged on a machine for preparation before production after being inspected to be qualified,
s101, preparing raw materials;
s102, checking raw materials, and checking whether the physical property parameters of the raw materials meet the design requirements;
s103, mixing materials and stirring, mixing according to a formula, and compounding the fabric layer and the intermediate material respectively;
s104, filtering, namely filtering the prepared materials;
s105, forming a film bubble, and defoaming the fabric;
s106, coating production, namely coating and drying, and coating for four times;
s107, blending a surface treating agent, adding 25-30% of nitrogen-containing titanium dioxide liquid into the water-based surface treating agent, and fully stirring the blended surface treating agent before production to ensure that the nitrogen-containing titanium dioxide is uniformly dispersed;
s108, processing the surface according to a set surface process;
s109, checking and warehousing;
s2, storing: the material is not ensured to be received without stopping, and the material can be stored on the material storage rack;
s3, version: one plate is surface first-pass treatment;
s4, oven: drying in a drying oven after one plate is passed;
s5, cooling wheel: after the material comes out of the oven, the surface temperature is higher, and the material enters a cooling wheel for cooling;
s6, second edition: carrying out secondary surface treatment on the cooled material;
s7, oven: after the second edition, the mixture enters a drying oven to be dried;
s8, heating cover: the material is heated in a heating cover after coming out of the oven, and preparation is made for embossing;
s9, embossing: embossing the surface of the material after the material exits the heating mantle;
s10, cooling wheel: the surface temperature of the embossed material is high, and the embossed material enters a cooling wheel for cooling treatment;
s11, rolling: rolling the cooled material;
s12, splitting: the material was inspected externally and trimmed.
Preferably, the raw material in step S101 includes PU resin, a stabilizer, a cross-linking agent, other additives, color paste, and nitrogen-containing titanium dioxide, and the nitrogen-containing titanium dioxide is one of powder and liquid.
Preferably, the four coating passes in step S106 are respectively a surface layer PU, an intermediate layer height PU1, a high-solid layer PU2 and a bonding layer.
Preferably, the step S105 of defoaming the fabric requires manual sample hanging to ensure that there are no large cells.
Preferably, the precoat in step S103 is prepared by adding the long-acting nitrogen-containing titanium dioxide to the nitrogen-containing titanium dioxide raw material.
Preferably, both of the first and second steps S3 and S6 are surface-treated with an aqueous treating agent.
Preferably, the ovens in steps S4 and S7 are heated by natural gas, and the dried exhaust gas is converted into water vapor and discharged to the outside.
Preferably, the heating cover in the step S8 is converted into heat energy by electric energy, so as to soften the surface of the leather.
Compared with the prior art, the invention has the beneficial effects that:
1. the photocatalyst (comprising titanium dioxide containing nitrogen) can resist bacteria and viruses, can perfectly combine with artificial leather (PU, STPE, TPO, TPE and regenerated cowhide), is suitable for environment-friendly and nontoxic leather and films of a precise coating technology, and forms a non-silver ion virus shield on the surface of a material by using a visible light reaction type photocatalyst by using a semi-electroplating method;
2. the poison shield combines water and oxygen in the air into active acid by using visible light to simulate the active acid generated by human body macrophages, so that triple effects of sterilizing, resisting viruses and reducing harmful substances of a closed space TV0C are achieved, recessive adverse effects of silver ions on human health are avoided, the material is close to an antiviral test of a medical grade after strict water washing, and the effect can reach a 5-year endurance test.
The invention can be applied to the seats and door plates arranged in the automobile, and also can be applied to the back cushions and seat coating leather of public fitness equipment, the seat cushions of public bicycles, public seats and seats of large transportation vehicles, and can assist the auxiliary work when part of epidemic prevention and disinfection work is careless, simplify the disinfection procedure and reduce the environmental and human health influence caused by the overuse of the disinfectant.
Drawings
FIG. 1 is a schematic view of the preparation process of a nitrogen-containing titanium dioxide artificial leather according to the present invention;
FIG. 2 is a schematic production flow chart of a method for preparing synthetic leather containing nitrogen-containing titanium dioxide according to the present invention;
FIG. 3 is a schematic diagram of the method for preparing synthetic leather containing nitrogen-containing titanium dioxide according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1 to 3, a method for preparing synthetic leather containing nitrogen-containing titanium dioxide, comprising the steps of:
s1, discharging: the base material is arranged on a machine for preparation before production after being inspected to be qualified,
s101, preparing raw materials;
s102, checking raw materials, and checking whether the physical property parameters of the raw materials meet the design requirements;
s103, mixing materials and stirring, mixing according to a formula, and compounding the fabric layer and the intermediate material respectively;
s104, filtering, namely filtering the prepared materials;
s105, forming a film bubble, and defoaming the fabric;
s106, coating production, namely coating and drying, and coating for four times;
s107, blending a surface treating agent, adding 25-30% of nitrogen-containing titanium dioxide liquid into the water-based surface treating agent, and fully stirring the blended surface treating agent before production to ensure that the nitrogen-containing titanium dioxide is uniformly dispersed;
s108, processing the surface according to a set surface process;
s109, checking and warehousing;
s2, storing: the material is not ensured to be received without stopping, and the material can be stored on the material storage rack;
s3, version: one plate is surface first-pass treatment;
s4, oven: drying in a drying oven after one plate is passed;
s5, cooling wheel: after the material comes out of the oven, the surface temperature is higher, and the material enters a cooling wheel for cooling;
s6, second edition: carrying out secondary surface treatment on the cooled material;
s7, oven: after the second edition, the mixture enters a drying oven to be dried;
s8, heating cover: the material is heated in a heating cover after coming out of the oven, and preparation is made for embossing;
s9, embossing: embossing the surface of the material after the material exits the heating mantle;
s10, cooling wheel: the surface temperature of the embossed material is high, and the embossed material enters a cooling wheel for cooling treatment;
s11, rolling: rolling the cooled material;
s12, splitting: the material was inspected externally and trimmed.
Example two
Referring to fig. 1 to 3, a method for preparing synthetic leather containing nitrogen-containing titanium dioxide, comprising the steps of:
s1, discharging: the base material is arranged on a machine for preparation before production after being inspected to be qualified,
s101, preparing raw materials, wherein the raw materials comprise PU resin, a stabilizer, a cross-linking agent, other auxiliary agents, color paste and nitrogen-containing titanium dioxide, and the nitrogen-containing titanium dioxide is one of powder and liquid;
s102, checking raw materials, and checking whether the physical property parameters of the raw materials meet the design requirements;
s103, mixing materials and stirring, mixing according to a formula, compounding a fabric layer and an intermediate material respectively, wherein the fabric layer is prepared by adding long-acting nitrogen-containing titanium dioxide into a nitrogen-containing titanium dioxide raw material;
s104, filtering, namely filtering the prepared materials;
s105, performing film bubble, defoaming the fabric, and manually hanging samples to ensure that no large bubble hole exists when the fabric is defoamed;
s106, coating production, namely coating and drying, and coating four times, wherein the four times of coating respectively comprise a surface layer PU, a middle layer PU1, a high-solid PU2 and a sticking layer;
s107, blending a surface treating agent, adding 25-30% of nitrogen-containing titanium dioxide liquid into the water-based surface treating agent, and fully stirring the blended surface treating agent before production to ensure that the nitrogen-containing titanium dioxide is uniformly dispersed;
s108, processing the surface according to a set surface process;
s109, checking and warehousing;
s2, storing: the material is not ensured to be received without stopping, and the material can be stored on the material storage rack;
s3, version: the first plate is surface first treatment, and water-based treating agent is used for surface treatment;
s4, oven: after passing one plate, the waste gas enters an oven to be dried, the oven is heated by using natural gas, and the dried waste gas is converted into water gas to be discharged outwards;
s5, cooling wheel: after the material comes out of the oven, the surface temperature is higher, and the material enters a cooling wheel for cooling;
s6, second edition: performing a second surface treatment on the cooled material by using an aqueous treating agent;
s7, oven: after the second edition, the waste gas enters an oven for drying, the oven is heated by using natural gas, and the dried waste gas is converted into water gas to be discharged outwards;
s8, heating cover: the material is heated in a heating cover after coming out of the oven, so that preparation is made for embossing, and the heating cover converts electric energy into heat energy to soften the surface of the leather;
s9, embossing: embossing the surface of the material after the material exits the heating mantle;
s10, cooling wheel: the surface temperature of the embossed material is high, and the embossed material enters a cooling wheel for cooling treatment;
s11, rolling: rolling the cooled material;
s12, splitting: the material was inspected externally and trimmed.
The working principle is as follows: the photocatalyst (comprising titanium dioxide containing nitrogen) can resist bacteria and viruses and can be perfectly combined with artificial leather stably (PU, STPE, TPO, TPE and regenerated cowhide), the invention is suitable for environment-friendly and nontoxic leather and films of a precise coating technology, a visible light reaction type photocatalyst forms a non-silver ion virus shield on the surface of a material by using a semi-electroplating method, the virus shield combines water in the air and oxygen into active acid which simulates active acid generated by human macrophages by using visible light, the triple effects of sterilizing, resisting viruses and reducing harmful substances of a closed space TV0C are achieved, the recessive adverse effect of silver ions on human health is avoided, the material is close to the antiviral test after strict water washing at the medical grade, and the effect can reach 5-year durable test.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. The preparation method of the artificial synthetic leather containing the nitrogen-containing titanium dioxide is characterized by comprising the following steps:
s1, discharging: the base material is arranged on a machine for preparation before production after being inspected to be qualified,
s101, preparing raw materials;
s102, checking raw materials, and checking whether the physical property parameters of the raw materials meet the design requirements;
s103, mixing materials and stirring, mixing according to a formula, and compounding the fabric layer and the intermediate material respectively;
s104, filtering, namely filtering the prepared materials;
s105, forming a film bubble, and defoaming the fabric;
s106, coating production, namely coating and drying, and coating for four times;
s107, blending a surface treating agent, adding 25-30% of nitrogen-containing titanium dioxide liquid into the water-based surface treating agent, and fully stirring the blended surface treating agent before production to ensure that the nitrogen-containing titanium dioxide is uniformly dispersed;
s108, processing the surface according to a set surface process;
s109, checking and warehousing;
s2, storing: the material is not ensured to be received without stopping, and the material can be stored on the material storage rack;
s3, version: one plate is surface first-pass treatment;
s4, oven: drying in a drying oven after one plate is passed;
s5, cooling wheel: after the material comes out of the oven, the surface temperature is higher, and the material enters a cooling wheel for cooling;
s6, second edition: carrying out secondary surface treatment on the cooled material;
s7, oven: after the second edition, the mixture enters a drying oven to be dried;
s8, heating cover: the material is heated in a heating cover after coming out of the oven, and preparation is made for embossing;
s9, embossing: embossing the surface of the material after the material exits the heating mantle;
s10, cooling wheel: the surface temperature of the embossed material is high, and the embossed material enters a cooling wheel for cooling treatment;
s11, rolling: rolling the cooled material;
s12, splitting: the material was inspected externally and trimmed.
2. The method of claim 1, wherein the raw materials of step S101 include PU resin, stabilizer, cross-linking agent, other additives, color paste, and nitrogen-containing titanium dioxide, and the nitrogen-containing titanium dioxide is one of powder and liquid.
3. The method of claim 1, wherein the four coating steps of step S106 are surface layer PU, middle layer PU1, high solid PU2 and adhesive layer.
4. The method as claimed in claim 1, wherein the step of defoaming the fabric in step S105 requires manual sample hanging to ensure that there are no large cells.
5. The method for preparing artificial leather containing nitrogen-containing titanium dioxide as claimed in claim 1, wherein the top layer in step S103 is prepared by adding a raw material containing nitrogen-containing titanium dioxide to a long-acting type of nitrogen-containing titanium dioxide.
6. The method of claim 1, wherein both of the first and second steps S3 and S6 are surface-treated with an aqueous treating agent.
7. The method of claim 1, wherein the ovens of the steps S4 and S7 are heated by natural gas, and the waste gas is converted into water vapor and discharged to the outside after drying.
8. The method as claimed in claim 1, wherein the heating mantle in the step S8 is used to soften the surface of the leather by converting electric energy into heat energy.
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