CN113026375A - Preparation process of waterborne polyurethane sports shoe leather base - Google Patents
Preparation process of waterborne polyurethane sports shoe leather base Download PDFInfo
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- CN113026375A CN113026375A CN202110172077.7A CN202110172077A CN113026375A CN 113026375 A CN113026375 A CN 113026375A CN 202110172077 A CN202110172077 A CN 202110172077A CN 113026375 A CN113026375 A CN 113026375A
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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
- 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
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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
- D06M15/53—Polyethers
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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
- 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
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using knitted fabrics
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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
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
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- 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
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N2211/00—Specially adapted uses
- D06N2211/10—Clothing
- D06N2211/106—Footwear
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- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
一种水性聚氨酯运动鞋革贝斯的制备工艺，包括以下步骤：步骤一，含浸：将无纺布通过浸渍槽中的浸渍液，多次浸透，轧辊挤压，保持无纺布的带液率在70‑80％；步骤二，预凝固：将步骤一处理后的无纺布通过预凝固液进行预凝，扎干，烫平；步骤三，涂覆：在经步骤二处理得到的无纺布表面涂刮水性聚氨酯发泡浆料；步骤四，凝固；步骤五，轧液；步骤六，水洗：对轧压后的无纺布进行水洗，清除多余的凝固液；步骤七，烘干；本申请对现有的鞋革贝斯的制备工艺进行改进，在水性聚氨酯发泡浆料涂布前，先浸渍高分子化合物溶液，然后预凝固，使水溶性高分子占据无纺布的内部空间，保护无纺布的纤维，对无纺布起到支撑作用，同时保持运动鞋革贝斯优异的硬挺性。A preparation process of water-based polyurethane sneaker leather bass, comprising the following steps: step 1, impregnation: the non-woven fabric is passed through the dipping liquid in the dipping tank, soaked for many times, and squeezed by rollers to keep the liquid-carrying rate of the non-woven fabric at 70-80%; Step 2, pre-coagulation: pre-coagulate the non-woven fabric processed in Step 1 with a pre-coagulation liquid, tie it dry, and iron it out; Step 3, coating: on the non-woven fabric processed in Step 2 Scraping water-based polyurethane foaming slurry on the surface; step 4, solidification; step 5, rolling liquid; step 6, washing: washing the non-woven fabric after rolling to remove excess coagulation liquid; step 7, drying; The application is to improve the preparation process of the existing shoe leather bass. Before the water-based polyurethane foaming slurry is coated, the polymer compound solution is first impregnated, and then pre-solidified, so that the water-soluble polymer occupies the inner space of the non-woven fabric and protects the The fibers of the non-woven fabric support the non-woven fabric while maintaining the excellent stiffness of the sneaker leather bass.
Description
Technical Field
The invention belongs to the field of shoe leather base preparation, and particularly relates to a preparation process of waterborne polyurethane sports shoe leather base.
Background
At present, most of sports shoe leather bass adopts solvent polyurethane as a raw material, and is prepared by a method of quickly dissolving and replacing an organic solvent (mainly DMF) in a water phase to form a film. The base has excellent stiffness, peeling strength and flexing resistance, thereby meeting the requirements of sports shoe leather. However, the raw materials contain organic solvents, so that certain organic solvents are contained in the production process and the prepared finished product, which is not only unfavorable for the health of production staff and terminal consumers, but also has a lot of negative effects on the environment. With the continuous deepening of sustainable development and social responsibility consciousness, the attention of sports brands and consumers to environmental protection is continuously improved and the environmental protection is realized in specific consumption activities. Therefore, the waterborne polyurethane sports shoe leather base is a development trend and a star product of environment-friendly shoe materials.
In the prior art, the manufacturing process of the waterborne wet sports shoe bass is that base cloth is soaked, flocculated, squeezed and ironed, then a waterborne polyurethane foaming material with a certain thickness is coated, and the waterborne polyurethane foaming material is manufactured through the processes of pre-drying, flocculation, washing, drying, back coating, drying, rolling and the like. The foaming material is coated in the process and then is subjected to pre-drying and back coating, the process is complex in procedure and high in energy consumption, the time is about 8-10 minutes in the flocculation process of the foaming material, the time is long, the production efficiency is low or production equipment is prolonged, and the investment cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation process of waterborne polyurethane sports shoe leather bass.
The invention adopts the following technical scheme:
a preparation process of waterborne polyurethane sports shoe leather base comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 70-80%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through pre-coagulating liquid, binding and ironing;
step three, coating: coating water-scraping polyurethane foaming slurry on the surface of the non-woven fabric obtained by the second step;
step four, solidification: solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank;
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 120-150 ℃, and the drying time is 8-12 min;
the impregnation liquid is composed of the following raw materials in parts by weight: 5-15 parts of anionic waterborne polyurethane resin with solid content of 30-45%, 70-90 parts of water, 1-3 parts of wetting agent, 1-3 parts of thickening agent and 1-3 parts of polyether polyester modified organosiloxane;
the waterborne polyurethane foaming slurry is prepared from the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with solid content of 40-50%, 10-15 parts of mica powder, 5-8 parts of clam powder, 5-7 parts of foaming agent, 5-7 parts of foam stabilizer, 0.5-3 parts of waterborne thickener, 1-3 parts of curing agent, 1-3 parts of cross-linking agent, 3-5 parts of organic antimony, 1-2 parts of epoxidized soybean oil and 1-3 parts of alkyl modified organosiloxane.
Further, the pre-coagulation liquid is a flocculant with the mass fraction of 0.2-1%, and the flocculant is composed of the following raw materials in parts by weight: 20-30 parts of lactic acid, 8-12 parts of citric acid and 5-10 parts of tartaric acid, and the flocculation time is 4-6 min.
Further, the solidification liquid is a demulsifier with the mass fraction of 2-5%, and the demulsifier is composed of the following raw materials in parts by weight: 30-40 parts of lactic acid, 10-18 parts of polymeric aluminum hydroxide, 8-12 parts of citric acid and 5-8 parts of phosphoric acid.
Further, the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation solution after vacuum defoaming and gauze filtering.
Furthermore, the foaming agent is an organic silicon modified foaming agent, a lauryl sodium sulfate composite foaming agent, a stearate foaming agent or a coconut oil amide foaming agent.
Further, the coating weight of the waterborne polyurethane foaming slurry is 500-700g/m2。
Further, the foam stabilizer is a silicone polyether emulsion type foam stabilizer or a protein type foam stabilizer.
Further, the aqueous thickener is an associated polyurethane thickener or an alkali-swelling acrylic thickener.
Further, the wetting agent is a modified silicone type wetting agent.
Further, the viscosity of the aqueous polyurethane foam material is 10000-17000 cps.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the application improves the existing shoe leather base preparation process, before the water-based polyurethane foaming slurry is coated, the high molecular compound solution is soaked, and then the pre-solidification is carried out, so that the water-soluble polymer occupies the internal space of the non-woven fabric, the fiber of the non-woven fabric is protected, and the non-woven fabric is supported;
the specific composition of the waterborne polyurethane foaming slurry is limited, mica powder and clam powder are added to be matched with other raw materials, so that the bonding force between the foaming slurry and the non-woven fabric after film forming is enhanced, and the peel strength of the finally prepared shoe leather bass is improved; organic antimony and epoxy soybean oil are added to be matched with other raw materials, so that the foaming slurry is stable and flat in film formation in the drying process, and the thickness of the finally prepared shoe leather bass is not lost; adding alkyl modified organic siloxane to match with other raw materials, so that a uniform and flat coating film can be formed in the drying process of the foaming slurry, and further the thickness of the prepared shoe leather base is not lost;
the demulsifier is formed by matching lactic acid, polymeric aluminum hydroxide, citric acid and phosphoric acid, so as to reduce the flocculation time of the aqueous polyurethane foaming slurry and improve the production efficiency.
Detailed Description
The invention is further described below by means of specific embodiments.
A preparation process of waterborne polyurethane sports shoe leather base comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 70-80%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through a pre-coagulating liquid, binding and ironing, wherein the pre-coagulating time is 1-3 min;
step three, coating: coating water-scraping polyurethane foaming slurry on the surface of the non-woven fabric obtained by the second step, wherein the coating weight of the water-scraping polyurethane foaming slurry is 500-2；
Step four, solidification: and (3) solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank, wherein the solidification time is 4-6 min:
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: and drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 120-150 ℃, and the drying time is 8-12 min.
Wherein the impregnation liquid consists of the following raw materials in parts by weight: 5-15 parts of anionic waterborne polyurethane resin with solid content of 30-45%, 70-90 parts of water, 1-3 parts of wetting agent, 1-3 parts of thickening agent and 1-3 parts of polyether polyester modified organosiloxane, and specifically, the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation liquid after vacuum defoaming and gauze filtering.
The waterborne polyurethane foaming slurry consists of the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with solid content of 40-50%, 10-15 parts of mica powder, 5-8 parts of clam powder, 5-7 parts of foaming agent, 5-7 parts of foam stabilizer, 0.5-3 parts of waterborne thickener, 1-3 parts of curing agent, 1-3 parts of cross-linking agent, 3-5 parts of organic antimony, 1-2 parts of epoxidized soybean oil and 1-3 parts of alkyl modified organosiloxane, wherein the foaming agent is organosilicon modified foaming agent, lauryl sodium sulfate composite foaming agent, stearate foaming agent or coconut oil amide foaming agent; the foam stabilizer is a silicone polyether emulsion foam stabilizer or a protein foam stabilizer; the water-based thickener is an associated polyurethane thickener or an alkali swelling acrylic acid thickener; the wetting agent is a modified silicone type wetting agent; further, the anionic waterborne polyurethane is polyether carboxylate type waterborne polyurethane resin JF-PDY-P620E produced by Shanghai Huafeng material research and development science and technology Limited; the wetting agent is BYK-345 made by Pico; the cross-linking agent is cross-linking agent C-64 produced by Wanjun chemical industry; the foam stabilizer is GC-614 produced by En chemical industry in Anhui; a foaming agent GC-615 produced by a foaming agent Anhui chemical industry; the water-based thickener is Gaudis COATEX RHEO-2000.
The preparation method of the waterborne polyurethane foaming slurry comprises the following steps: sequentially adding a cross-linking agent, a foaming agent, a foam stabilizer and a water-based thickener into anionic waterborne polyurethane, uniformly mixing and stirring, slowly adding mica powder, clam powder, a curing agent, organic antimony, epoxidized soybean oil and alkyl modified organic siloxane, uniformly stirring at the speed of 400-plus-one 500r/min, foaming to 1.1-1.6 times of the original volume, adjusting the viscosity to 10000-17000cps, and filtering warp cloth to obtain the used waterborne polyurethane foaming slurry.
The pre-coagulation solid-liquid is a flocculating agent with the mass fraction of 0.2-1%, and the flocculating agent is composed of the following raw materials in parts by weight: 20-30 parts of lactic acid, 8-12 parts of citric acid and 5-10 parts of tartaric acid, and the flocculation time is 4-6 min.
The solidified liquid is a demulsifier with the mass fraction of 2-5%, and the demulsifier is composed of the following raw materials in parts by weight: 30-40 parts of lactic acid, 10-18 parts of polymeric aluminum hydroxide, 8-12 parts of citric acid and 5-8 parts of phosphoric acid.
Example 1
A preparation process of waterborne polyurethane sports shoe leather base comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 70%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through a pre-coagulating solid-liquid, binding and ironing, wherein the pre-coagulating time is 1 min;
step three, coating: coating water-scraping polyurethane foaming slurry on the surface of the non-woven fabric obtained by the second step, wherein the coating weight of the water-scraping polyurethane foaming slurry is 500g/m2；
Step four, solidification: and (3) solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank, wherein the solidification time is 6 min:
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: and drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 120 ℃, and the drying time is 12 min.
Wherein the impregnation liquid consists of the following raw materials in parts by weight: 5 parts of anionic waterborne polyurethane resin with the solid content of 30%, 70 parts of water, 3 parts of wetting agent, 1 part of thickening agent and 3 parts of polyether polyester modified organic siloxane, and specifically, the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation liquid after vacuum defoaming and gauze filtering.
The waterborne polyurethane foaming slurry consists of the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with the solid content of 40%, 15 parts of mica powder, 5 parts of clam powder, 7 parts of foaming agent, 5 parts of foam stabilizer, 0.5 part of waterborne thickener, 3 parts of curing agent, 1 part of crosslinking agent, 5 parts of organic antimony, 1 part of epoxidized soybean oil and 3 parts of alkyl modified organic siloxane, wherein the foaming agent is organic silicon modified foaming agent, lauryl sodium sulfate composite foaming agent, stearate foaming agent or coconut oil amide foaming agent; the foam stabilizer is a silicone polyether emulsion foam stabilizer or a protein foam stabilizer; the water-based thickener is an associated polyurethane thickener or an alkali swelling acrylic acid thickener; the wetting agent is a modified silicone type wetting agent; further, the anionic waterborne polyurethane is polyether carboxylate type waterborne polyurethane resin JF-PDY-P620E produced by Shanghai Huafeng material research and development science and technology Limited; the wetting agent is BYK-345 made by Pico; the cross-linking agent is cross-linking agent C-64 produced by Wanjun chemical industry; the foam stabilizer is GC-614 produced by En chemical industry in Anhui; a foaming agent GC-615 produced by a foaming agent Anhui chemical industry; the water-based thickener is Gaudis COATEX RHEO-2000.
The preparation method of the waterborne polyurethane foaming slurry comprises the following steps: sequentially adding a cross-linking agent, a foaming agent, a foam stabilizer and a water-based thickener into anionic water-based polyurethane, uniformly mixing and stirring, slowly adding mica powder, clam powder, a curing agent, organic antimony, epoxidized soybean oil and alkyl modified organic siloxane, uniformly stirring at the speed of 400r/min, foaming to 1.1 times of the original volume, adjusting the viscosity to 10000cps, and filtering warp cloth to obtain the used water-based polyurethane foaming slurry.
The pre-coagulation solid-liquid is a flocculant with the mass fraction of 0.2%, and the flocculant is composed of the following raw materials in parts by weight: 20 parts of lactic acid, 12 parts of citric acid and 5 parts of tartaric acid, and the flocculation time is 4 min.
The solidified liquid is a demulsifier with the mass fraction of 2%, and the demulsifier is composed of the following raw materials in parts by weight: 40 parts of lactic acid, 10 parts of polymeric aluminum hydroxide, 12 parts of citric acid and 5 parts of phosphoric acid.
Example 2
A preparation process of waterborne polyurethane sports shoe leather base comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 80%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through pre-coagulating liquid, binding and ironing, wherein the pre-coagulating time is 3 min;
step three, coating: coating water scraping on the surface of the non-woven fabric obtained by the second stepThe coating weight of the polyurethane foaming slurry is 700g/m2；
Step four, solidification: and (3) solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank, wherein the solidification time is 4 min:
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: and drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 150 ℃, and the drying time is 8 min.
Wherein the impregnation liquid consists of the following raw materials in parts by weight: 15 parts of anionic waterborne polyurethane resin with solid content of 45%, 90 parts of water, 1 part of wetting agent, 3 parts of thickening agent and 1 part of polyether polyester modified organic siloxane, and specifically, the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation liquid after vacuum defoaming and gauze filtering.
The waterborne polyurethane foaming slurry consists of the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with 50% solid content, 10 parts of mica powder, 8 parts of clam powder, 5 parts of foaming agent, 7 parts of foam stabilizer, 3 parts of waterborne thickener, 1 part of curing agent, 3 parts of cross-linking agent, 3 parts of organic antimony, 2 parts of epoxidized soybean oil and 1 part of alkyl modified organosiloxane, wherein the foaming agent is organic silicon modified foaming agent, lauryl sodium sulfate composite foaming agent, stearate foaming agent or coconut oil amide foaming agent; the foam stabilizer is a silicone polyether emulsion foam stabilizer or a protein foam stabilizer; the water-based thickener is an associated polyurethane thickener or an alkali swelling acrylic acid thickener; the wetting agent is a modified silicone type wetting agent; further, the anionic waterborne polyurethane is polyether carboxylate type waterborne polyurethane resin JF-PDY-P620E produced by Shanghai Huafeng material research and development science and technology Limited; the wetting agent is BYK-345 made by Pico; the cross-linking agent is cross-linking agent C-64 produced by Wanjun chemical industry; the foam stabilizer is GC-614 produced by En chemical industry in Anhui; a foaming agent GC-615 produced by a foaming agent Anhui chemical industry; the water-based thickener is Gaudis COATEX RHEO-2000.
The preparation method of the waterborne polyurethane foaming slurry comprises the following steps: sequentially adding a cross-linking agent, a foaming agent, a foam stabilizer and an aqueous thickening agent into anionic aqueous polyurethane, uniformly mixing and stirring, slowly adding mica powder, clam powder, a curing agent, organic antimony, epoxidized soybean oil and alkyl modified organosiloxane, uniformly stirring at the speed of 500r/min, foaming to 1.6 times of the original volume, adjusting the viscosity to 17000cps, and filtering warp cloth to obtain the used aqueous polyurethane foaming slurry.
The pre-coagulation solid-liquid is a flocculating agent with the mass fraction of 1%, and the flocculating agent is composed of the following raw materials in parts by weight: 30 parts of lactic acid, 8 parts of citric acid and 10 parts of tartaric acid, and the flocculation time is 6 min.
The solidified liquid is a demulsifier with the mass fraction of 5%, and the demulsifier is composed of the following raw materials in parts by weight: 30 parts of lactic acid, 18 parts of polymeric aluminum hydroxide, 8 parts of citric acid and 8 parts of phosphoric acid.
Example 3
A preparation process of waterborne polyurethane sports shoe leather base comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 75%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through a pre-coagulating solid liquid, binding and ironing, wherein the pre-coagulating time is 2 min;
step three, coating: coating water-scraping polyurethane foaming slurry on the surface of the non-woven fabric obtained by the second step, wherein the coating weight of the water-scraping polyurethane foaming slurry is 650g/m2；
Step four, solidification: and (3) solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank, wherein the solidification time is 5 min:
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: and drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 135 ℃, and the drying time is 10 min.
Wherein the impregnation liquid consists of the following raw materials in parts by weight: 10 parts of anionic waterborne polyurethane resin with the solid content of 38%, 80 parts of water, 2 parts of wetting agent, 2 parts of thickening agent and 2 parts of polyether polyester modified organic siloxane, and specifically, the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation liquid after vacuum defoaming and gauze filtering.
The waterborne polyurethane foaming slurry consists of the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with solid content of 48%, 12 parts of mica powder, 6 parts of clam meal, 6 parts of foaming agent, 6 parts of foam stabilizer, 1.6 parts of waterborne thickener, 2 parts of curing agent, 2 parts of crosslinking agent, 4 parts of organic antimony, 1.5 parts of epoxidized soybean oil and 2 parts of alkyl modified organosiloxane, wherein the foaming agent is organosilicon modified foaming agent, lauryl sodium sulfate composite foaming agent, stearate foaming agent or coconut oil amide foaming agent; the foam stabilizer is a silicone polyether emulsion foam stabilizer or a protein foam stabilizer; the water-based thickener is an associated polyurethane thickener or an alkali swelling acrylic acid thickener; the wetting agent is a modified silicone type wetting agent; further, the anionic waterborne polyurethane is polyether carboxylate type waterborne polyurethane resin JF-PDY-P620E produced by Shanghai Huafeng material research and development science and technology Limited; the wetting agent is BYK-345 made by Pico; the cross-linking agent is cross-linking agent C-64 produced by Wanjun chemical industry; the foam stabilizer is GC-614 produced by En chemical industry in Anhui; a foaming agent GC-615 produced by a foaming agent Anhui chemical industry; the water-based thickener is Gaudis COATEX RHEO-2000.
The preparation method of the waterborne polyurethane foaming slurry comprises the following steps: sequentially adding a cross-linking agent, a foaming agent, a foam stabilizer and an aqueous thickening agent into anionic aqueous polyurethane, uniformly mixing and stirring, slowly adding mica powder, clam powder, a curing agent, organic antimony, epoxidized soybean oil and alkyl modified organosiloxane, uniformly stirring at the speed of 450r/min, foaming to 1.3 times of the original volume, adjusting the viscosity to 14500cps, and filtering warp cloth to obtain the used aqueous polyurethane foaming slurry.
The pre-coagulation solid-liquid is a flocculant with the mass fraction of 0.7%, and the flocculant is composed of the following raw materials in parts by weight: 25 parts of lactic acid, 10 parts of citric acid and 8 parts of tartaric acid, and the flocculation time is 5 min.
The solidified liquid is a demulsifier with the mass fraction of 3.5%, and the demulsifier is composed of the following raw materials in parts by weight: 35 parts of lactic acid, 15 parts of polymeric aluminum hydroxide, 10 parts of citric acid and 6 parts of phosphoric acid.
The waterborne polyurethane sports leather base obtained in the three embodiments and the leather base in the prior art are tested to obtain the following experimental data:
TABLE 1 test data sheet for each example
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Appearance of the product | Leveling | Leveling | Leveling | Leveling |
| Hand feeling | Stiffening bar | Stiffening bar | Stiffening bar | Stiffening bar |
| Peel strength | 16kg/3cm | 15kg/3cm | 18kg/3cm | 10kg/3cm |
To sum up, this application improves the preparation technology of current shoes leather shellfish, before aqueous polyurethane foaming thick liquids coating, dip macromolecular compound solution earlier, then solidify in advance, make the water-soluble polymer occupy the inner space of non-woven fabrics, protect the fibre of non-woven fabrics, play the supporting role to the non-woven fabrics, compare with traditional shellfish preparation technology and save the prebaking after the coating foaming material, back coating, the overall process is more simplified, and can reach the outward appearance and the feel of shoes leather shellfish among the prior art, reduction in production cost, keep the excellent stiffness and the high peel strength of sports shoes leather shellfish simultaneously, application rerum natures such as resistant flexibility.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (10)
1. A preparation process of waterborne polyurethane sports shoe leather bass is characterized by comprising the following steps: the method comprises the following steps:
step one, impregnation: soaking the non-woven fabric for many times by using the impregnation liquid in the impregnation tank, and extruding by using a roller to keep the liquid carrying rate of the non-woven fabric at 70-80%;
step two, pre-solidification: pre-coagulating the non-woven fabric treated in the step one through pre-coagulating liquid, binding and ironing;
step three, coating: coating water-scraping polyurethane foaming slurry on the surface of the non-woven fabric obtained by the second step;
step four, solidification: solidifying the non-woven fabric prepared in the step three by using a solidification liquid in a solidification tank;
step five, mangling: rolling the solidified bass according to the thickness requirement;
step six, washing: washing the rolled non-woven fabric with water to remove redundant solidification liquid;
step seven, drying: drying and shaping the washed non-woven fabric to obtain the waterborne polyurethane sports shoe leather bass, wherein the drying temperature is 120-150 ℃, and the drying time is 8-12 min;
the impregnation liquid is composed of the following raw materials in parts by weight: 5-15 parts of anionic waterborne polyurethane resin with solid content of 30-45%, 70-90 parts of water, 1-3 parts of wetting agent, 1-3 parts of thickening agent and 1-3 parts of polyether polyester modified organosiloxane;
the waterborne polyurethane foaming slurry is prepared from the following raw materials in parts by weight: 100 parts of anionic waterborne polyurethane with solid content of 40-50%, 10-15 parts of mica powder, 5-8 parts of clam powder, 5-7 parts of foaming agent, 5-7 parts of foam stabilizer, 0.5-3 parts of waterborne thickener, 1-3 parts of curing agent, 1-3 parts of cross-linking agent, 3-5 parts of organic antimony, 1-2 parts of epoxidized soybean oil and 1-3 parts of alkyl modified organosiloxane.
2. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the pre-coagulation solid-liquid is a flocculant with the mass fraction of 0.2-1%, and the flocculant is composed of the following raw materials in parts by weight: 20-30 parts of lactic acid, 8-12 parts of citric acid and 5-10 parts of tartaric acid, and the flocculation time is 4-6 min.
3. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the solidification liquid is a demulsifier with the mass fraction of 2-5%, and the demulsifier is composed of the following raw materials in parts by weight: 30-40 parts of lactic acid, 10-18 parts of polymeric aluminum hydroxide, 8-12 parts of citric acid and 5-8 parts of phosphoric acid.
4. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the preparation method of the impregnation liquid comprises the following steps: mixing and stirring the anionic waterborne polyurethane resin and water uniformly, then sequentially adding the wetting agent, the thickening agent and the polyether polyester modified organic siloxane, stirring and mixing uniformly, and obtaining the impregnation solution after vacuum defoaming and gauze filtering.
5. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the foaming agent is an organic silicon modified foaming agent, a lauryl sodium sulfate composite foaming agent, a stearate foaming agent or a coconut oil amide foaming agent.
6. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the coating weight of the waterborne polyurethane foaming slurry is 500-700g/m2。
7. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the foam stabilizer is a silicone polyether emulsion foam stabilizer or a protein foam stabilizer.
8. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the aqueous thickener is an associated polyurethane thickener or an alkali-swelling acrylic thickener.
9. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the wetting agent is a modified silicone type wetting agent.
10. The preparation process of the waterborne polyurethane sports shoe leather base according to claim 1, is characterized in that: the viscosity of the aqueous polyurethane foam material is 10000-17000 cps.
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| CN119041217A (en) * | 2024-09-10 | 2024-11-29 | 科一(福建)超纤有限责任公司 | Technological processing method of zero-crease bass synthetic leather |
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