CN111041844A - Anti-siphon shoe leather base and preparation method thereof - Google Patents
Anti-siphon shoe leather base and preparation method thereof Download PDFInfo
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- CN111041844A CN111041844A CN201911347943.0A CN201911347943A CN111041844A CN 111041844 A CN111041844 A CN 111041844A CN 201911347943 A CN201911347943 A CN 201911347943A CN 111041844 A CN111041844 A CN 111041844A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000010985 leather Substances 0.000 title description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 241000321398 Dermatolepis dermatolepis Species 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 22
- -1 methoxyl structure Chemical group 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 36
- 125000000129 anionic group Chemical group 0.000 claims description 30
- 229920005749 polyurethane resin Polymers 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 22
- 238000005187 foaming Methods 0.000 claims description 19
- 239000004088 foaming agent Substances 0.000 claims description 19
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 239000002270 dispersing agent Substances 0.000 claims description 16
- 239000002562 thickening agent Substances 0.000 claims description 16
- 229920003180 amino resin Polymers 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 238000006266 etherification reaction Methods 0.000 claims description 10
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 10
- 238000011049 filling Methods 0.000 claims description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 9
- 238000004381 surface treatment Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000004078 waterproofing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 125000002091 cationic group Chemical group 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 229940088990 ammonium stearate Drugs 0.000 claims description 3
- JPNZKPRONVOMLL-UHFFFAOYSA-N azane;octadecanoic acid Chemical group [NH4+].CCCCCCCCCCCCCCCCCC([O-])=O JPNZKPRONVOMLL-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 27
- 239000003431 cross linking reagent Substances 0.000 abstract description 18
- 238000005470 impregnation Methods 0.000 abstract description 15
- 229920002635 polyurethane Polymers 0.000 abstract description 14
- 239000004814 polyurethane Substances 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 5
- 238000004513 sizing Methods 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 37
- 238000001035 drying Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
- 230000001112 coagulating effect Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000000945 filler Substances 0.000 description 7
- 230000002940 repellent Effects 0.000 description 7
- 239000005871 repellent Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004971 Cross linker Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- VPVSTMAPERLKKM-UHFFFAOYSA-N glycoluril Chemical compound N1C(=O)NC2NC(=O)NC21 VPVSTMAPERLKKM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
-
- 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
-
- 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
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- 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
- D06N2211/10—Clothing
- D06N2211/106—Footwear
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses an anti-siphon shoe leather bass and a preparation method thereof, wherein the anti-siphon shoe leather bass comprises a bass sizing agent, a substance with a methoxyl structure and the like. The invention increases the impregnation process, improves the reaction ratio among the cross-linking agent, the curing agent and the waterborne polyurethane particles, greatly improves the reaction effect, and prepares the shoe leather bass with low water absorption rate.
Description
Technical Field
The invention belongs to the technical field of leather base, and particularly relates to an anti-siphon shoe leather base and a preparation method thereof.
Background
In aqueous wet-process bass production, the crosslinker is usually added to the bass slurry, which has the disadvantage that water is passed through the coagulation bath, and after the water washing bath is washed, the water-dispersible crosslinker is lost in the coagulation bath or the water washing bath, and the crosslinker finally participating in the reaction is little. In addition, most of the existing waterproof agents on the market are cationic waterproof agents which are incompatible with the traditional anionic waterborne polyurethane and cannot be directly added, so that the waterproof agents cannot be used in the waterborne wet base production process to improve the water resistance. The invention provides an impregnation process for adding a cross-linking agent or a waterproof agent after a washing process and before a drying process, solves the problems of loss of the cross-linking agent and incompatibility of the waterproof agent in wet-process leather base production, improves the water resistance of the wet-process leather base, and prepares the low-water-absorption water-based wet-process leather base.
Disclosure of Invention
The invention aims to provide an anti-siphon shoe leather bass and a preparation method thereof, so that the prepared shoe leather bass has excellent water resistance, low water absorption rate and other properties.
In order to solve the problems, the invention is realized by the following technical scheme: the invention provides an anti-siphon shoe leather bass, comprising:
the base material comprises a base material and a base material, wherein the base material comprises a base material and a base material;
the substance with the methoxy structure can generate etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin, so that a three-dimensional net structure is formed by connection, and the water resistance of the polymer resin is improved.
In one embodiment, the shoe leather bass further comprises a water repellent.
In one embodiment, the water repellent agent is a cationic silicone water repellent agent.
In one embodiment, the substance with a methoxy structure is one or more of amino resin, methylated amino resin or butylated amino resin.
In one embodiment, the anionic waterborne polyurethane resin comprises, by mass, 100 parts of the anionic waterborne polyurethane resin, 0.1-4 parts of the dispersing agent, 4-50 parts of the filler, 5-8 parts of the foaming agent, 0.1-1.5 parts of the color paste and 0.1-3 parts of the thickening agent.
In one embodiment, the foaming agent is ammonium stearate or sodium dodecyl sulfate.
The invention also aims to provide a preparation method of the anti-siphon shoe leather bass, which at least comprises the following steps:
under the stirring state, mixing a dispersing agent, a filling material, a foaming agent, color paste, a thickening agent and anionic waterborne polyurethane resin to obtain a Bayesian slurry;
foaming the bass slurry, and performing solidification and water washing to obtain water-washed slurry;
soaking the washed slurry in a solution of a substance with a methoxy structure, and performing surface treatment to enable the substance with the methoxy structure to perform etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin to form a three-dimensional net structure;
and/or immersing the slurry in a solution of a water-proofing agent and performing a surface treatment step to obtain the shoe leather bass.
In one embodiment, the process of preparing the bass slurry is to mix the dispersing agent, the filling material, the foaming agent, the color paste, the thickening agent and the anionic aqueous polyurethane resin under a stirring state.
In one embodiment, the mass concentration of the solution of the substance having a methoxy structure is 0.5% to 5%.
In one embodiment, the mass concentration of the solution of the water repellent is 0.5% to 5%.
In one embodiment, the surface treatment step includes drying, cooling, and rolling.
The invention adds an impregnation process, for example, the bass slurry is impregnated into a substance with a methoxyl structure, the substance with the methoxyl structure can enable hydroxyl in the molecular chain of the anionic waterborne polyurethane resin to generate etherification reaction, the etherification reaction proportion is more than that of the traditional method, so that the shoe leather bass has low water absorption rate and anti-siphon effect, the impregnation process also improves the reaction proportion among the cross-linking agent, the curing agent and the waterborne polyurethane particles, and the reaction effect is greatly improved. The invention adds a process of impregnating waterproof agent, wherein the impregnation is carried out when the water-based polyurethane is solidified and shaped, and the problem of incompatibility with the anionic water-based polyurethane does not exist.
Drawings
FIG. 1: the method in one embodiment of the invention is schematically illustrated in flow chart.
Detailed Description
The present invention is further illustrated by the following specific examples, but it should be noted that the specific material ratios, process conditions, results, etc. described in the examples of the present invention are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the scope of the present invention. Note that "%" shown in the description herein means "part by mass" unless otherwise specified.
The invention provides an anti-siphon shoe leather bass and a preparation method thereof, wherein an impregnation process is added before a drying process after a water washing process, for example, a bass slurry is impregnated into a substance with a methoxy structure, so that the substance with the methoxy structure can generate etherification reaction with hydroxyl in a molecular chain of an anionic waterborne polyurethane resin. The proportion of the reaction among the cross-linking agent, the curing agent and the waterborne polyurethane particles is improved, and the reaction effect is greatly improved.
Referring to fig. 1, a schematic flow chart of a method for manufacturing an anti-siphon shoe leather bass according to an embodiment of the present invention at least includes the following steps:
s1, mixing the dispersing agent, the filling material, the foaming agent, the color paste, the thickening agent and the anionic waterborne polyurethane resin under the stirring state to obtain a Bayesian slurry;
s2, carrying out foaming treatment on the bass slurry, and carrying out solidification and water washing steps to obtain water-washed slurry;
s3, soaking the slurry after water washing in a solution of a substance with a methoxy structure, and performing a surface treatment step, wherein the substance with the methoxy structure can perform etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin.
S4, and/or immersing the slurry in a solution of a waterproof agent and performing a surface treatment step to obtain the shoe leather bass.
Specifically, in step S1, the anionic waterborne polyurethane resin is 100 parts by weight, the dispersant is 0.1 to 4 parts by weight, the filler is 4 to 50 parts by weight, the foaming agent is 5 to 8 parts by weight, the color paste is 0.1 to 1.5 parts by weight, and the thickener is 0.1 to 3 parts by weight. The step changes the traditional process of adding a cross-linking agent or a waterproof agent when preparing the sizing agent.
Specifically, in step S2, the foaming agent is ammonium stearate or sodium dodecyl sulfate.
Specifically, in step S3, the substance having a methoxy structure is one or a combination of more of an amino resin, a methylated amino resin, or a butylated amino resin. The substance with the methoxy structure can generate etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin, so that a three-dimensional net structure is formed by connection, and the water resistance of the molecular resin is improved. So that the shoe leather bass has low water absorption rate and anti-siphon effect.
Specifically, in step S4, the water repellent is a cationic silicone water repellent, and the process of adding water to a water repellent solution after washing, in which case, the impregnation is performed when the aqueous polyurethane has been solidified and shaped, and there is no problem of insolubility with the anionic aqueous polyurethane. The mass concentration of the solution of the substance with the methoxyl structure is 0.5-5%. The mass concentration of the solution of the waterproof agent is 0.5-5%, and the surface treatment step comprises drying, cooling and rolling. The impregnation process of the invention also improves the reaction ratio among the cross-linking agent, the curing agent and the waterborne polyurethane particles, and the reaction effect is greatly improved.
The present invention will be specifically described below by way of examples, and comparative examples.
In one embodiment, 0.4-0.5 mass part of dispersing agent, 25-28 mass parts of filler, 6 mass parts of foaming agent, 1.0 mass part of color paste and 0.5 mass part of thickening agent are added into 100 mass parts of anionic waterborne polyurethane resin under the stirring state to be mixed, and the mixture is uniformly dispersed to obtain the Bayesian slurry A. Foaming the base fabric by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing by water, immersing the washed base fabric in 1.5-2% of a partially methylated amino resin crosslinking agent solution, drying, cooling, rolling and the like to obtain the shoe leather base fabric A.
In one embodiment, under a stirring state, 2-2.5 parts by mass of a dispersing agent, 30-32 parts by mass of a filler, 5 parts by mass of a foaming agent, 1.5 parts by mass of a color paste, and 0.8 part by mass of a thickening agent are added to 100 parts by mass of an anionic aqueous polyurethane resin and mixed, and the mixture is uniformly dispersed to obtain the bass slurry B. Foaming the base fabric B by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing, soaking the washed base fabric B in 4-4.5% of organic silicon waterproof agent solution, drying, cooling, rolling and the like to obtain the shoe leather base fabric B.
In one embodiment, 0.6-0.8 mass part of dispersing agent, 25-28 mass parts of filler, 6 mass parts of foaming agent, 1.0 mass part of color paste and 0.5 mass part of thickening agent are added into 100 mass parts of anionic waterborne polyurethane resin under the stirring state to be mixed, and the mixture is uniformly dispersed to obtain the Bayesian slurry C. Foaming the base fabric C by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing with water, soaking the washed base fabric C in 2-3% amino resin solution, drying, cooling, rolling and the like to obtain the shoe leather base fabric C.
In one embodiment, under a stirring state, 2 to 2.5 parts by mass of a dispersing agent, 30 to 32 parts by mass of a filler, 5 parts by mass of a foaming agent, 1.5 parts by mass of a color paste, and 0.8 part by mass of a thickening agent are added to 100 parts by mass of an anionic aqueous polyurethane resin and mixed, and the mixture is uniformly dispersed to obtain the bass slurry D. Foaming the base fabric D by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing, soaking the washed base fabric D in 3-4% of organic silicon waterproof agent solution, drying, cooling, rolling and the like to obtain the shoe leather base fabric D.
In one embodiment, 0.4-0.6 mass part of dispersing agent, 10-12 mass parts of filler, 6 mass parts of foaming agent, 1.0 mass part of color paste and 0.5 mass part of thickening agent are added into 100 mass parts of anionic waterborne polyurethane resin under the stirring state to be mixed, and the mixture is uniformly dispersed to obtain the Bayesian slurry E. Foaming the base fabric E by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing by water, immersing the washed base fabric E in 0.5-1% of a partial butyl etherified amino resin cross-linking agent solution, drying, cooling, rolling and the like to obtain the shoe leather base fabric E.
In a pair of proportions, under the stirring state, 2-2.5 parts by mass of dispersing agent, 30-32 parts by mass of filling material, 5 parts by mass of foaming agent, 1.5 parts by mass of color paste and 0.8 part by mass of thickening agent are added into 100 parts by mass of anionic waterborne polyurethane resin for mixing, then 3-4% of organic silicon waterproof agent solution is added, and the base slurry F is prepared by uniform dispersion. Foaming the base fabric F by a foaming machine, coating the base fabric on the base fabric, solidifying by a coagulating tank, washing by water, drying, cooling, rolling and the like to obtain the shoe leather base fabric F. In the comparative example, a waterproofing agent was added during the preparation of the bass slurry according to the conventional method without adding an impregnation process.
In a pair of proportions, under the stirring state, 2 to 2.5 parts by mass of dispersing agent, 30 to 32 parts by mass of filling material, 5 parts by mass of foaming agent, 2.0 parts by mass of color paste and 0.8 part by mass of thickening agent are added into 100 parts by mass of anionic waterborne polyurethane resin for mixing, then 1.5 to 2 percent of partial methylated amino resin crosslinking agent solution is added, and the bass slurry G is prepared by uniform dispersion. Foaming the base fabric G by a foaming machine, coating the base fabric G on the pretreated base fabric, solidifying by a coagulating tank, washing by water, drying, cooling, rolling and the like to obtain the shoe leather base fabric G. In the comparative example, hexamethylol glycoluril was added as a cross-linking agent during the preparation of the bass slurry according to the conventional method without adding an impregnation process.
In a pair of proportions, under the stirring state, 2 to 2.5 parts by mass of dispersing agent, 30 to 32 parts by mass of filling material, 5 parts by mass of foaming agent, 2.0 parts by mass of color paste and 0.8 part by mass of thickening agent are added into 100 parts by mass of anionic waterborne polyurethane resin for mixing, then 1.5 to 2 percent of partial methylated amino resin crosslinking agent solution is added, and the bass slurry H is prepared by uniform dispersion. Foaming the base cloth by a foaming machine, coating the base cloth on the pretreated base cloth, solidifying by a coagulating tank, washing by water, drying, cooling, rolling and the like to obtain the shoe leather base cloth H. In the comparative example, a partial methylated amino resin was added as a crosslinking agent during the preparation of the bass slurry without adding an impregnation process according to the conventional method.
The shoe leather base obtained in the above-mentioned examples and comparative examples of the present invention was subjected to a performance test, and the above-mentioned resin was used as a shoe leather top resin to test properties such as modulus, breaking strength, water absorption and the like, and the test results are shown in Table 1.
TABLE 1 Performance test Table
| Sample (I) | 100% modulus/MPa | Breaking strength/MPa | Elongation at break/% | Water absorption rate | Surface contact angle |
| Shoe leather bass A | 0.95 | 18 | 1425 | Is low in | 135 |
| Shoe leather bass B | 0.84 | 16 | 1369 | Is low in | 143 |
| Shoe leather bass C | 1.13 | 24 | 1352 | Is low in | 124 |
| Shoe leather bass D | 0.80 | 20 | 1380 | Is low in | 120 |
| Shoe leather bass E | 0.85 | 12 | 1450 | Is low in | 123 |
| Shoe leather bass F | 1.33 | 14 | 895 | Height of | 95 |
| Shoe leather bass G | 1.55 | 14 | 902 | Height of | 96 |
| Shoe leather bass H | 1.58 | 12 | 905 | Height of | 95 |
The data analysis in table 1 shows that the shoe leather base prepared by adding the impregnation process after the base slurry is prepared and solidified in the solidification tank and washed by water is better in overall performance compared with the shoe leather base prepared by directly adding the crosslinking agent or the waterproof agent when the slurry leather base is prepared. After the base slurry is prepared, the base slurry is solidified in a solidification tank and washed by water, and then a crosslinking agent or a waterproof agent with a certain concentration is added, so that the prepared shoe leather base has low water absorption rate and anti-siphon effect. The invention also widens the application of the waterborne polyurethane. According to the invention, an impregnation process is added, for example, the bass slurry is impregnated into a substance with a methoxy structure, and the substance with the methoxy structure can generate etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin, so that a three-dimensional net structure is formed by linkage, and the water resistance of the polymer resin is improved. The impregnation process also improves the proportion of the reaction among the cross-linking agent, the curing agent and the waterborne polyurethane particles, the reaction effect is greatly improved, the cross-linking agent and the curing agent which can react with the waterborne polyurethane in the traditional method are only about 20 percent of the total amount, and the use efficiency of the cross-linking agent of the curing agent is very low. For example, the process of impregnating with a waterproof agent is added, and the impregnation is carried out when the waterborne polyurethane is solidified and shaped, so that the problem of incompatibility with the anionic waterborne polyurethane does not exist.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (10)
1. An anti-siphon shoe leather bass, characterized by comprising:
the base material comprises a base material and a base material, wherein the base material comprises a base material and a base material;
wherein the substance with the methoxyl structure can generate etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin to form a three-dimensional net structure.
2. The anti-siphon shoe leather bass of claim 1, wherein the shoe leather bass further comprises a waterproof agent.
3. The anti-siphon shoe leather bass of claim 1, wherein the water-proofing agent is a cationic silicone water-proofing agent.
4. The anti-siphon shoe leather bass of claim 1, wherein the substance with the methoxy structure is one or more of amino resin, methylated amino resin or butylated amino resin.
5. The anti-siphon shoe leather bass is characterized in that the mass parts of the anionic waterborne polyurethane resin are 100, the mass parts of the dispersing agent are 0.1-4, the mass parts of the filling material are 4-50, the mass parts of the foaming agent are 5-8, the mass parts of the color paste are 0.1-1.5, and the mass parts of the thickening agent are 0.1-3.
6. The anti-siphon shoe leather bass of claim 1, wherein the foaming agent is ammonium stearate or sodium dodecyl sulfate.
7. The preparation method of the anti-siphon shoe leather bass is characterized by at least comprising the following steps:
under the stirring state, mixing a dispersing agent, a filling material, a foaming agent, color paste, a thickening agent and anionic waterborne polyurethane resin to obtain a Bayesian slurry;
foaming the bass slurry, and performing solidification and water washing to obtain water-washed slurry;
soaking the washed slurry in a solution of a substance with a methoxy structure, and performing surface treatment to enable the substance with the methoxy structure to perform etherification reaction with hydroxyl in the molecular chain of the anionic waterborne polyurethane resin to form a three-dimensional net structure;
and/or immersing the slurry in a solution of a water-proofing agent and performing a surface treatment step to obtain the shoe leather bass.
8. The anti-siphon shoe leather bass of claim 7, wherein the process for preparing the bass slurry is to mix a dispersing agent, a filling material, a foaming agent, a color paste, a thickening agent and an anionic waterborne polyurethane resin under a stirring state.
9. The anti-siphon shoe leather bass of claim 7, wherein the mass concentration of the solution of the substance with the methoxy structure is 0.5-5%.
10. The anti-siphon shoe leather bass of claim 7, wherein the mass concentration of the water-proofing agent solution is 0.5% -5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347943.0A CN111041844A (en) | 2019-12-24 | 2019-12-24 | Anti-siphon shoe leather base and preparation method thereof |
Applications Claiming Priority (1)
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