CN110725131A - Production process of waterborne polyurethane microfiber conductive suede leather for touch screen - Google Patents
Production process of waterborne polyurethane microfiber conductive suede leather for touch screen Download PDFInfo
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/45—Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic System; Aluminates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- 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
- D06N2205/00—Condition, form or state of the materials
- D06N2205/02—Dispersion
- D06N2205/023—Emulsion, aqueous dispersion, latex
Abstract
The invention relates to a production process of waterborne polyurethane microfiber conductive suede leather for a touch screen. The preparation method is simple, the conductive material is added into the impregnation liquid, the insulativity of the suede leather is reduced, the physical property and the hand feeling of the suede leather are not changed, the waterborne polyurethane is selected as the carrier of the conductive object, the environment is protected, the waterborne polyurethane can be effectively bonded with other components of the microfiber conductive suede leather after drying treatment, the waterborne polyurethane is not easy to wash away by water, the wear resistance is improved to a certain extent, when a display screen of an electronic product is touched, a human body is communicated with a magnetic field generated by the suede leather, and the effect that the touch screen can be used when the glove is worn is achieved.
Description
Technical Field
The invention relates to a production process of conductive suede leather, in particular to a production process of waterborne polyurethane microfiber conductive suede leather for a touch screen.
Background
With the updating of technological trend and the introduction of Iphone mobile phones by apple inc in 2007, capacitive touch screen products begin to board the historical stage, and then the touch screens are rapidly popularized in the field of novel consumer electronics, and by 2011, the global touch screen mobile phone share accounts for 75% of the total goods output of smart phones, but the capacitive touch screen products are used for warming in winter. Because the capacitive touch screen product cannot be operated (is not conductive) when wearing gloves, hands are very frozen outdoors by using the touch screen product.
The glove leather has weak resistance and excellent conductivity, can be communicated with a magnetic field of a human body, and works by utilizing current induction of the human body. When a finger touches the metal layer, a coupling capacitance is formed between the user and the touch screen surface due to the electric field of the human body, and for high frequency currents, the capacitance is a direct conductor, so that the finger draws a small current from the contact point. The current flows out of the electrodes on the four corners of the touch screen, the current flowing through the four electrodes is in proportion to the distance from the finger to the four corners, and the controller obtains the position of the touch point through accurate calculation of the four current proportions.
The gloves made of the common superfine fiber synthetic leather cannot enable the touch screen to normally react when the touch screen electronic product is used, wherein the reason is that the materials for making the gloves cannot conduct electricity.
There are some gloves made of conductive polyurethane microfiber suede leather on the market, and although the positions of some touch points can be obtained, a user can operate a touch screen by wearing the gloves, the problem that the touch points are not sensitive is still existed.
Disclosure of Invention
The invention aims to provide a production process of waterborne polyurethane microfiber conductive suede leather for a touch screen, aiming at solving the problem that electronic products are inconvenient to use when gloves are taken off in the cold.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a waterborne polyurethane microfiber conductive suede leather for a touch screen comprises the steps of preparing sea-island fibers into non-woven fabrics, and then obtaining the waterborne polyurethane microfiber conductive suede leather for the touch screen through hot water shrinkage, primary drying and shaping, polyurethane conductive liquid impregnation, drying, baking, alkali decrement, secondary drying and shaping, dyeing, sueding and finishing.
Preferably, the sea-island fiber is a fiber containing polyethylene terephthalate, polytrimethylene terephthalate, nylon, polyethylene and polypropylene as the island component, and preferably contains a shrinkable type sea-island fiber and a partially conductive type sea-island fiber.
Preferably, the impregnated polyurethane conductive liquid comprises the following components in parts by weight: aqueous polyurethane: 30-50 parts of conductive powder: 5-15 parts of a cross-linking agent: 1-3 parts of a thickening agent: 1-2 parts of a defoaming agent: 0.1-0.5 parts of deionized water: 50-100 parts of inorganic salt: 0.5-1.5 parts of coupling agent: 0.5 to 1.5 portions. And soaking the substrate in the polyurethane conductive liquid at normal temperature at the speed of 3-6 m/min.
The aqueous polyurethane is selected from one of anionic aqueous polyurethane, cationic aqueous polyurethane or nonionic aqueous polyurethane; the definitions of anionic aqueous polyurethane, cationic aqueous polyurethane and nonionic aqueous polyurethane are reported in the document "aqueous polyurethane materials" (SchoGo et al. aqueous polyurethane materials [ M ]. Beijing: chemical industry Press, 2006.). Related products are also sold in the market, such as Impranil LP RSC 1380 from Bayer materials technologies, Inc.
Preferably, the conductive powder includes a carbon-based material, a metal oxide, an intrinsically conductive polymer, or a metal material.
Preferably, the carbon-based material includes carbon black, carbon fiber, or graphite; the metal oxide comprises zinc oxide ZnO doped with a small amount of IIIA group elements, indium oxide In2O3 doped with a small amount of Sn elements or tin oxide SnO2 doped with a small amount of pentavalent elements.
Preferably, the group IIIA element includes Al, Ga or In; the pentavalent element includes Sb, As or F.
Preferably, the temperature of hot water in hot water shrinkage is 60-99 ℃; the temperature for primary drying and shaping is 120-150 ℃; the temperature in the drying is increased from 60 ℃ to 160 ℃; the baking temperature is 150-160 ℃; the alkali decrement is NaOH decrement fiber opening, the concentration of NaOH is 0.5-1.5%, the temperature is 80-95 ℃, and the time is 30-50 min; the temperature for the second drying and shaping is 120-140 ℃; the dyeing temperature is 110-130 ℃.
Preferably, the nonwoven fabric properties: the gram weight is 300-600 g/m2The density is 0.15 to 0.3g/cm3。
Preferably, the sanding is two-side sanding, and the fineness of the sand paper is 150-320 meshes.
Preferably, when 180 meshes are selected on the reverse side, 0.02-0.03mm is ground off; selecting 320 meshes, and grinding off 0.01-0.03 mm; the front side is the same as the back side. And (4) sanding, wherein the aim is to obtain a uniform velvet feeling on the surface. Grinding the back side once and grinding the front side once; according to the product requirements, the back surface can be used once, and the front surface can be used once; the grinding is carried out by 180 meshes, i.e. coarse grinding, and the grinding is carried out by 320 meshes, i.e. fine grinding (other meshes can be adopted).
The invention has the beneficial effects that: the preparation method is simple, the conductive carbon black is added into the impregnation liquid, the insulativity of the leather is reduced, the physical property and the hand feeling of the leather are not changed, and the conductivity of the conductive glove leather reaches 10-4-10-7s/m, the waterborne polyurethane is selected as a carrier of a conductive object, the waterborne polyurethane is environment-friendly, a certain amount of hydrogen bonds can be formed with the microfiber conductive suede leather after drying treatment, so that the bonding fastness of the conductive object in the microfiber conductive suede leather is ensured, the microfiber conductive suede leather is not easy to wash away, and the friction color fastness of the microfiber conductive suede leather can be improved to a certain degreeAnd (6) touching a screen. The preparation process of the invention is a basic process of the synthetic leather industry, has no special requirements on equipment and process conditions, and the prepared conductive superfine fiber suede leather can be applied to products such as electronic touch screen gloves and the like, and has huge market prospect.
Detailed Description
The invention is further illustrated by the following specific examples:
the raw materials used in the present invention are all commercially available.
Example 1
A production process of waterborne polyurethane microfiber conductive suede leather for touch screens,
1. and (3) needling process:
1) selecting fibers: an island fiber comprising at least a partially shrinkable island fiber; at least partial conductive island fiber (island having conductive function); example 3: 7;
2) and (3) needling process: the non-woven fabric is prepared by the processes of opening and picking, carding, lapping, needling and the like;
3) the performance of the non-woven fabric is as follows: the gram weight is 300g/m2Density of 0.15g/cm3；
2. Hot water shrinkage process, wherein the hot water temperature is 60 ℃;
3. the drying and shaping process temperature is 120 ℃;
4. polyurethane impregnation process
The formula comprises the following components: aqueous polyurethane: 30 parts of conductive powder: 5 parts of a crosslinking agent: 1 part of thickening agent: 1 part of defoaming agent: 0.1 part, deionized water: 50 parts of inorganic salt: 0.5 part of a coupling agent: 0.5 part. Wherein the waterborne polyurethane is Impranil LP RSC 1380 of Bayer material science and technology Limited, and the conductive powder is graphite; a crosslinking agent: dismann environmental-friendly cross-linking agent CX-100, Netherlands; the thickener is purchased from Beijing Maier chemical engineering science and technology Limited, and has the model number HY-304D; the defoaming agent is purchased from Nicoti Henxin chemical technology Co., Ltd, and is a THIX-299 polyether modified silicon defoaming agent; the inorganic salt is calcium chloride and sodium sulfate with the mass ratio of 1: 2; coupling agent: purchased from Nanjing, Prof chemical Co., Ltd., model A-151.
Scraping the redundant resin on the surface of the non-woven fabric after impregnation;
5. and (3) drying process: the temperature in the drying is increased from 60 ℃ to 160 ℃;
6. baking: 150 ℃;
7. alkali decrement: reducing NaOH and opening fiber, wherein the concentration of NaOH is 0.5 percent, the temperature is 80 ℃, and the time is 30 min;
8. drying and shaping: 120 ℃;
9. dyeing: dyeing with disperse dye at 110 ℃;
10. sanding: firstly, grinding the back side once by using 180-mesh abrasive paper to remove 0.02-0.03mm, and then grinding the front side once by using 180-mesh abrasive paper to remove 0.02-0.03 mm.
11. Finishing: softening, cleaning ash, and packaging.
The conductivity of the waterborne polyurethane microfiber conductive suede leather for the touch screen is measured by adopting a direct current circuit, a sample to be measured is placed between two copper electrodes with the mass of 100g and the area of 4cm x 3cm before the test, and the electrodes have certain mass in order to ensure that the electrodes and the sample to be measured are in good contact. During testing, the galvanometer is connected in series with the suede leather sample, the direct current voltmeter is connected in parallel with the series circuit of the galvanometer and the suede leather sample, finally, the direct current voltmeter and the direct current power supply form a closed loop, current generated by the power supply sequentially flows through the galvanometer and the suede leather sample, the output voltage of the power supply is continuously adjusted, and meanwhile, the reading U of the direct current voltmeter and the reading I (testing method, the same below) of the galvanometer are recorded, and the conductivity is 4 multiplied by 10-7s/m。
Example 2
A production process of waterborne polyurethane microfiber conductive suede leather for touch screens,
1. and (3) needling process:
1) selecting fibers: an island fiber comprising at least a partially shrinkable island fiber; at least partial conductive island fiber (island having conductive function); example 3: 7;
2) and (3) needling process: the non-woven fabric is prepared by the processes of opening and picking, carding, lapping, needling and the like;
3) the performance of the non-woven fabric is as follows: gram weight 400g/m2Density of 0.2g/cm3；
2. Hot water shrinkage process, hot water 80 ℃;
3. the drying and shaping process temperature is 130 ℃;
4. polyurethane impregnation process
The formula comprises the following components: aqueous polyurethane: 40 parts of conductive powder: 10 parts of a crosslinking agent: 2 parts of a thickening agent: 1.5 parts of defoaming agent: 0.3 part, deionized water: 85 parts of inorganic salt: 1.1 part and coupling agent: 0.8 part. Wherein the aqueous polyurethane is Impranil LP RSC 1380 from Bayer materials science and technology Limited, and the conductive powder is indium oxide In2O3Doping a small amount of tin Sn element ITO; a crosslinking agent: dismann environmental-friendly cross-linking agent CX-100, Netherlands; the thickener is purchased from Beijing Maier chemical engineering science and technology Limited, and has the model number HY-304D; the defoaming agent is purchased from Nicoti Henxin chemical technology Co., Ltd, and is a THIX-299 polyether modified silicon defoaming agent; the inorganic salt is calcium chloride and sodium sulfate with the mass ratio of 1: 2; coupling agent: purchased from Nanjing, Prof chemical Co., Ltd., model A-151.
Scraping the redundant resin on the surface of the non-woven fabric after impregnation;
5. and (3) drying process: the temperature in the drying is increased from 60 ℃ to 160 ℃;
6. baking: 155 ℃;
7. alkali decrement: reducing NaOH and splitting, wherein the concentration of NaOH is 1%, the temperature is 88 ℃, and the time is 45 min;
8. drying and shaping: 125 ℃;
9. dyeing: dyeing with disperse dye at 120 ℃;
10. sanding: firstly grinding the back side once by using 180-mesh abrasive paper to remove 0.02-0.03mm, and then grinding the front side once by using 180-mesh abrasive paper to remove 0.02-0.03 mm; and grinding the back surface once by using 320-mesh abrasive paper to remove 0.01-0.03mm, and grinding the front surface once by using 320-mesh abrasive paper to remove 0.01-0.03 mm.
11. Finishing: softening, cleaning ash, and packaging.
The conductivity is detected to be 4 multiplied by 10-5s/m。
Example 3
A production process of waterborne polyurethane microfiber conductive suede leather for touch screens,
1. and (3) needling process:
1) selecting fibers: an island fiber comprising at least a partially shrinkable island fiber; at least partial conductive island fiber (island having conductive function); example 3: 7;
2) and (3) needling process: the non-woven fabric is prepared by the processes of opening and picking, carding, lapping, needling and the like;
3) the performance of the non-woven fabric is as follows: gram weight 600g/m2Density of 0.3g/cm3；
2. Hot water shrinkage process, wherein the hot water is 99 ℃;
3. the drying and shaping process temperature is 150 ℃;
4. polyurethane impregnation process
The formula comprises the following components: aqueous polyurethane: 50 parts of conductive powder: 15 parts of a crosslinking agent: 3 parts of a thickening agent: 2 parts of defoaming agent: 0.5 part, deionized water: 100 parts of inorganic salt: 1.5 parts and a coupling agent: 1.5 parts. Wherein the waterborne polyurethane is Impranil LP RSC 1380 from Bayer materials science and technology Limited, and the conductive powder is tin oxide SnO2Doping a small amount of Sb element; a crosslinking agent: dismann environmental-friendly cross-linking agent CX-100, Netherlands; the thickener is purchased from Beijing Maier chemical engineering science and technology Limited, and has the model number HY-304D; the defoaming agent is purchased from Nicoti Henxin chemical technology Co., Ltd, and is a THIX-299 polyether modified silicon defoaming agent; the inorganic salt is calcium chloride and sodium sulfate with the mass ratio of 1: 2; coupling agent: purchased from Nanjing, Prof chemical Co., Ltd., model A-151.
Scraping the redundant resin on the surface of the non-woven fabric after impregnation;
5. and (3) drying process: the temperature in the drying is increased from 60 ℃ to 160 ℃;
6. baking: 160 ℃;
7. alkali decrement: reducing NaOH and opening fiber, wherein the concentration of NaOH is 1.5%, the temperature is 95 ℃, and the time is 50 min;
8. drying and shaping: 140 ℃;
9. dyeing: dyeing with disperse dye at 130 ℃;
10. sanding: firstly grinding the back side once by using 180-mesh abrasive paper to remove 0.02-0.03mm, and then grinding the front side once by using 180-mesh abrasive paper to remove 0.02-0.03 mm; and grinding the back surface once by using 320-mesh abrasive paper to remove 0.01-0.03mm, and grinding the front surface once by using 320-mesh abrasive paper to remove 0.01-0.03 mm.
11. Finishing: softening, cleaning ash, and packaging.
The conductivity is detected to be 5 multiplied by 10-4s/m。
Claims (10)
1. A production process of waterborne polyurethane microfiber conductive suede leather for a touch screen is characterized in that sea-island fibers are made into non-woven fabrics, and then the waterborne polyurethane microfiber conductive suede leather for the touch screen is obtained through hot water shrinkage, primary drying and shaping, polyurethane conductive liquid impregnation, drying, baking, alkali reduction, secondary drying and shaping, dyeing, suede and finishing.
2. The process for producing the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 1, wherein the sea-island fiber and island component are preferably polyethylene terephthalate, polytrimethylene terephthalate, nylon, polyethylene and polypropylene.
3. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 1, wherein the impregnated polyurethane conductive liquid comprises the following components in parts by weight: aqueous polyurethane: 30-50 parts of conductive powder: 5-15 parts of a cross-linking agent: 1-3 parts of a thickening agent: 1-2 parts of a defoaming agent: 0.1-0.5 parts of deionized water: 50-100 parts of inorganic salt: 0.5-1.5 parts of coupling agent: 0.5 to 1.5 portions.
4. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens as claimed in claim 3, wherein the conductive powder comprises carbon-based materials, metal oxides, intrinsic conductive polymers or metal materials.
5. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens as claimed in claim 4, wherein the production process is characterized in thatWherein the carbon-based material comprises carbon black, carbon fiber, or graphite; the metal oxide comprises zinc oxide ZnO doped with a small amount of IIIA group elements and indium oxide In2O3Doping small amount of Sn element or tin oxide SnO2Doping a small amount of pentavalent elements.
6. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 5, wherein the IIIA group elements comprise Al, Ga or In; the pentavalent element includes Sb, As or F.
7. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 1, wherein the temperature of hot water in hot water shrinkage is 60-99 ℃; the temperature for primary drying and shaping is 120-150 ℃; the temperature in the drying is increased from 60 ℃ to 160 ℃; the baking temperature is 150-160 ℃; the alkali decrement is NaOH decrement fiber opening, the concentration of NaOH is 0.5-1.5%, the temperature is 80-95 ℃, and the time is 30-50 min; the temperature for the second drying and shaping is 120-140 ℃; the dyeing temperature is 110-130 ℃.
8. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 1, wherein the performances of the non-woven fabric are as follows: the gram weight is 300-600 g/m2The density is 0.15 to 0.3g/cm3。
9. The production process of the waterborne polyurethane microfiber conductive suede leather for the touch screen as claimed in claim 1, wherein the suede is two-side polishing, and the fineness of the abrasive paper is 150-320 meshes.
10. The production process of the waterborne polyurethane microfiber conductive suede leather for touch screens according to claim 9, wherein when 180 meshes are selected for the reverse side, 0.02-0.03mm is ground off; selecting 320 meshes, and grinding off 0.01-0.03 mm; the front side is the same as the back side.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725052A (en) * | 2009-11-04 | 2010-06-09 | 烟台万华超纤股份有限公司 | Waterborne polyurethane resin superfiber leather and manufacturing method thereof |
| CN102817243A (en) * | 2012-09-07 | 2012-12-12 | 上海华峰超纤材料股份有限公司 | Conductive polyurethane superfine fiber suede leather and preparing method thereof |
| CN104562723A (en) * | 2013-10-16 | 2015-04-29 | 禾欣可乐丽超纤皮(嘉兴)有限公司 | Wet-process production method of polyurethane conductive superfine fiber suede leather |
-
2019
- 2019-08-13 CN CN201910746787.9A patent/CN110725131A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725052A (en) * | 2009-11-04 | 2010-06-09 | 烟台万华超纤股份有限公司 | Waterborne polyurethane resin superfiber leather and manufacturing method thereof |
| CN102817243A (en) * | 2012-09-07 | 2012-12-12 | 上海华峰超纤材料股份有限公司 | Conductive polyurethane superfine fiber suede leather and preparing method thereof |
| CN104562723A (en) * | 2013-10-16 | 2015-04-29 | 禾欣可乐丽超纤皮(嘉兴)有限公司 | Wet-process production method of polyurethane conductive superfine fiber suede leather |
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Application publication date: 20200124 |