CN113563774A - Anti-tearing leather shoe vamp and preparation method thereof - Google Patents
Anti-tearing leather shoe vamp and preparation method thereof Download PDFInfo
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- CN113563774A CN113563774A CN202110847765.9A CN202110847765A CN113563774A CN 113563774 A CN113563774 A CN 113563774A CN 202110847765 A CN202110847765 A CN 202110847765A CN 113563774 A CN113563774 A CN 113563774A
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- tear
- vamp
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- resistant
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The application relates to the field of leather shoe manufacturing technology, and particularly discloses a tear-resistant leather shoe upper and a preparation method thereof. The anti-tearing leather shoe vamp is coated with an anti-tearing agent, and the anti-tearing agent is prepared from the following raw materials, by weight, 5-10 parts of hydroxyl silicone oil, 0.5-1.2 parts of a fatting agent, 15-25 parts of acrylic resin, 3-7 parts of epoxy resin, 2-5 parts of phosphate solution, 0.05-0.2 part of a surfactant and 0.03-0.08 part of an accelerator; the preparation method comprises the following steps: s1, taking the nappa vamp leather to carry out surface cleaning for later use; s2, coating a tear-resistant agent on the surface of the washed nappa vamp leather, and drying at 80-100 ℃ to obtain the tear-resistant leather shoe vamp. The leather shoe vamp has excellent tear resistance and antifouling performance.
Description
Technical Field
The application relates to the field of leather shoe manufacturing technology, in particular to a tear-resistant leather shoe vamp and a preparation method thereof.
Background
The leather shoes are formed by processing natural leather as a vamp and leather, rubber, plastic and the like as soles through gluing, injection molding and other processes. The leather shoes have the characteristics of ventilation and moisture absorption, have good sanitary performance, and are one of favorite shoes.
The nappa vamp leather in the natural leather has the advantages of being light, thin, soft and high in elasticity, but the tear resistance of the conventional nappa vamp leather is poor, and the tearing strength of a nappa vamp leather finished product is low easily due to overlarge mechanical acting force in a drum dyeing or wringing process, so that the firmness of the finished vamp at a sewn part is low, and the finished vamp is easy to tear.
With respect to the related art in the above, the inventors consider that: it is highly desirable to improve the tear resistance of nappa shoe upper leather.
Disclosure of Invention
In order to improve the tear resistance of nappa vamp leather, the application provides a tear-resistant leather shoe vamp and a preparation method thereof.
In a first aspect, the application provides a tear-resistant leather shoe upper, which adopts the following technical scheme:
the technical scheme is adopted, the anti-tearing shoe upper is coated with the anti-tearing agent, the anti-tearing agent is prepared from the following raw materials, by weight, 5-10 parts of hydroxyl silicone oil, 0.5-1.2 parts of fatting agent, 15-25 parts of acrylic resin, 3-7 parts of epoxy resin, 2-5 parts of phosphate solution, 0.05-0.2 part of surfactant, 0.03-0.08 part of accelerator and 0.5-1.5 parts of cross-linking agent, the anti-tearing agent is adjusted according to the preparation raw materials of the anti-tearing agent, the epoxy resin is added into the anti-tearing agent, epoxy groups on the epoxy resin have high reaction activity, the Napa shoe upper leather contains collagen fibers, epoxy groups on the epoxy resin can react with epsilon-amino groups in the collagen fibers to form a cross-linking system, and the acrylic resin has high adhesiveness, the acrylic resin and the epoxy resin can form a cross-linking system, so that the acrylic resin and the epoxy resin have synergistic effect to improve the stability of the nappa vamp leather so as to improve the tear resistance of the vamp of the leather shoe, and the hydroxyl silicone oil has good lubricating property, plays a role in lubricating fibers, reduces the possibility of dust adhesion of the nappa vamp leather and enables the vamp of the leather shoe to have good dustproof property.
Preferably, the acrylic resin is a hydroxy acrylic resin.
Preferably, the viscosity of the hydroxyacrylic resin is 2500-.
By adopting the technical scheme, the compatibility of the hydroxyl acrylic resin in the anti-tearing agent is higher, the uniformity of an anti-tearing agent system is improved, and the stability of the nappa vamp leather is improved, so that the anti-tearing performance of the nappa vamp leather is improved, when the viscosity of the hydroxyl acrylic resin at 25 ℃ is 2500-.
Preferably, the epoxy resin is a medium molecular weight type epoxy resin.
By adopting the technical scheme, the epoxy equivalent of the medium molecular weight type epoxy resin is higher, the cross-linking effect with the nappa vamp leather in a tearing-resistant agent system is stronger, the stability of the nappa vamp leather is further improved, the possibility of tearing of the nappa vamp leather is reduced, and the tearing resistance of the leather shoe vamp is improved.
Preferably, the phosphate solution is a sodium phosphate solution.
Preferably, the surfactant is a nonionic surfactant.
Preferably, the accelerator is triethylene diamine.
By adopting the technical scheme, the triethylene diamine contains amido, can be uniformly dispersed in a tearing inhibitor system, and is suitable for preparing the tearing inhibitor for the vamp of the leather shoe.
Preferably, the preparation method of the tear resistance agent comprises the following steps: mixing acrylic resin, epoxy resin and a cross-linking agent, heating to 60-80 ℃, uniformly stirring, sequentially adding hydroxyl silicone oil, a fatting agent, a phosphate solution, a surfactant and an accelerator, and uniformly mixing to obtain the tear resistance agent.
By adopting the technical scheme, the preparation method for preparing the anti-tearing agent is simple and convenient, and the hydroxyl silicone oil, the fatting agent, the phosphate solution, the surfactant and the accelerator are added in sequence, so that the uniformity of the anti-tearing agent is further improved.
In a second aspect, the application provides a method for preparing a tear-resistant leather shoe upper, which adopts the following technical scheme:
a preparation method of the tear-resistant leather shoe vamp comprises the following preparation steps:
s1, taking the nappa vamp leather to carry out surface cleaning for later use;
s2, coating a tear-resistant agent on the surface of the washed nappa vamp leather, and drying at 80-100 ℃ to obtain the tear-resistant leather shoe vamp.
By adopting the technical scheme, the anti-tearing agent is coated on the vamp of the leather shoe and the preparation raw materials of the anti-tearing agent are adjusted, so that the stability of the nappa vamp leather is improved under the synergistic action of the acrylic resin and the epoxy resin, the anti-tearing performance of the vamp of the leather shoe is improved, the anti-tearing agent plays a role in lubricating fibers, the possibility of dust adhesion of the nappa vamp leather is reduced, and the vamp of the leather shoe has good dustproof performance.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, the anti-tearing agent is coated on the vamp of the leather shoe and is adjusted against the preparation raw materials of the anti-tearing agent, so that the stability of the nappa vamp leather is improved under the synergistic effect of the acrylic resin and the epoxy resin, the anti-tearing performance of the vamp of the leather shoe is improved, the anti-tearing agent plays a role of lubricating fibers, the possibility of dust adhesion of the nappa vamp leather is reduced, and the vamp of the leather shoe has good dustproof performance;
2. according to the preparation method, the acrylic resin is preferably replaced by the hydroxyl acrylic resin, the hydroxyl acrylic resin is high in compatibility in the anti-tearing agent, the uniformity of the anti-tearing agent system is improved, the stability of the nappa vamp leather is improved, and the anti-tearing performance of the prepared leather shoe vamp is improved.
3. The intermediate molecular weight type epoxy resin is preferably adopted, the epoxy equivalent of the intermediate molecular weight type epoxy resin is higher, the cross-linking effect with the nappa vamp leather in a tearing-resistant agent system is stronger, the stability of the nappa vamp leather is further improved, the possibility of tearing of the nappa vamp leather is reduced, and the tearing resistance of the leather shoe vamp is improved.
Detailed Description
The present application will be described in further detail with reference to the following preparation examples and examples, wherein the nappa shoe upper leather used in the present application is of the HS-WC series, 1.2mm thick, and available from han lion leather industry ltd, Dongguan; the sodium phosphate solution used had a mass concentration of 65 wt% and was purchased from national pharmaceutical products chemical Co., Ltd. unless otherwise specified, the sources of the other raw materials used in the present application are shown in Table 1.
TABLE 1 sources of raw materials used in the present application
Preparation of tear resistance agent
Preparation example 1
The preparation method of the anti-tearing agent comprises the following steps: heating 20g of acrylic resin, 5g of epoxy resin and 1g of cross-linking agent to 70 ℃, uniformly stirring, sequentially adding 7g of hydroxy silicone oil, 1g of fatting agent, 3g of phosphate solution, 0.1g of surfactant and 0.05g of accelerator, and uniformly mixing to obtain the anti-tearing agent;
the epoxy equivalent of the epoxy resin is 183-200 g/eq; the type of the fat-liquoring agent is A-BUZ; the mass concentration of the phosphate solution is 65 wt% of sodium phosphate solution; the type of the surfactant used was Triton X2100; the accelerant is triethylene diamine; the cross-linking agent is N-hydroxysuccinimide.
Preparation examples 2 to 9
Preparation examples 2 to 9 are based on preparation example 1 and differ from preparation example 1 only in that: the conditions for preparing the tear resistance agent are different, and are shown in table 2.
TABLE 2 preparation conditions for the tear inhibitors of preparation examples 1 to 9
Preparation example 10
Preparation 10 is based on preparation 1, differing from preparation 1 only in that: the acrylic resin was replaced by equal mass of hydroxy acrylic resin having a viscosity of 1500-2500 mPas at 25 ℃.
Preparation example 11
Preparation 11 is based on preparation 10, and differs from preparation 10 only in that: the viscosity of the hydroxyacrylic resin used was 2500-4500 mPas at 25 ℃.
Preparation example 12
Preparation 12 is based on preparation 11, differing from preparation 11 only in that: the epoxy resin is medium molecular weight type epoxy resin, and the epoxy equivalent of the medium molecular weight type epoxy resin is 710-875 g/eq.
Comparative preparation example
Comparative preparation example 1
Comparative preparation example 1 is based on preparation example 1, differing from preparation example 1 only in that: the epoxy resin is replaced by acrylic resin with equal mass.
Comparative preparation example 2
Comparative preparation example 2 is based on preparation example 1, differing from preparation example 1 only in that: the acrylic resin is replaced by epoxy resin with equal mass, and the epoxy equivalent of the epoxy resin is 183-200 g/eq.
Comparative preparation example 3
Comparative preparation 3 is based on preparation 1, differing from preparation 1 only in that: sodium acetate solution with equal mass is used to replace sodium phosphate solution, the mass concentration of the sodium acetate solution is 65 wt%, and the sodium acetate solution is purchased from national pharmaceutical group chemical reagent company Limited.
Examples
Example 1
A preparation method of the tear-resistant leather shoe vamp comprises the following preparation steps:
s1, cleaning nappa shoe upper leather with absolute ethyl alcohol, and drying in a vacuum drying oven at 40 ℃;
s2, coating the anti-tearing agent on the surface of the washed nappa vamp leather, wherein the coating amount is 1g/cm2And drying at 90 ℃ to obtain the tear-resistant leather shoe vamp, wherein the tear-resistant agent is prepared from the preparation example 1.
Examples 2 to 9
Examples 2 to 9 are based on example 1 and differ from example 1 only in that: the sources of tear resistance agents used vary and are specifically shown in table 3.
TABLE 3 sources of tear resistance agent used in examples 1-9
| Examples | Sources of tear resistance agents |
| Example 1 | Preparation example 1 |
| Example 2 | Preparation example 2 |
| Example 3 | Preparation example 3 |
| Example 4 | Preparation example 4 |
| Example 5 | Preparation example 5 |
| Example 6 | Preparation example 6 |
| Example 7 | Preparation example 7 |
| Example 8 | Preparation example 8 |
| Example 9 | Preparation example 9 |
Example 10
Example 10 is based on example 1 and differs from example 1 only in that: the drying temperature in the step S2 was 80 ℃.
Example 11
Example 11 is based on example 1 and differs from example 1 only in that: the drying temperature in the step S2 is 100 ℃.
Example 12
Example 12 is based on example 1 and differs from example 1 only in that: the tear resistance agent used was from preparation example 10.
Example 13
Example 13 is based on example 12 and differs from example 12 only in that: the tear resistance agent used was from preparation example 11.
Example 14
Example 14 is based on example 13 and differs from example 13 only in that: the tear resistance agent used was derived from preparation example 12.
Comparative example
Comparative example 1
Comparative example 1 is based on example 1 and differs from example 1 only in that: the tear resistance agent used was from comparative preparation 1.
Comparative example 2
Comparative example 2 is based on example 1 and differs from example 1 only in that: the tear-resistant agent used originates from comparative preparation 2.
Comparative example 3
Comparative example 3 is based on example 1 and differs from example 1 only in that: the tear resistance agent used was from comparative preparation 3.
Comparative example 4
A leather shoe vamp is made of Napa vamp leather, is HS-WC series, has a thickness of 1.2mm, and is purchased from Hanshi leather industry Co.
Performance test
The following performance tests were performed on the shoe uppers of the leather shoes of examples 1 to 14 and comparative examples 1 to 4, respectively.
Testing the pinhole tearing strength: the pinhole tear strengths of the shoe uppers of the leather shoes of examples 1-14 and comparative examples 1-4 were measured according to the regulations of GB/T17928-1999 (leather pinhole tear strength determination method) at a test environment temperature of 23 ℃ and a relative humidity of 60%, and the test results are shown in Table 4.
Single-side tearing force test: the single-sided tear strength of the uppers of the leather shoes of examples 1-14 and comparative examples 1-4 was tested according to the specification of QB-T4198-.
And (3) stain resistance test: the shoe uppers of the leather shoes of examples 1 to 14 and comparative examples 1 to 4 were tested for stain resistance as specified in FZ-T01066-1999 (method for measuring stain resistance of coated fabrics), and the test results are shown in Table 4.
And (3) wear rate testing: the wear rates of the uppers of the leather shoes of the examples 1-14 and the comparative examples 1-4 are respectively tested by adopting a universal friction wear testing machine, the testing force is 20N, the rotating speed is 80r/min, the testing time is 10min, and the calculation formula of the wear rate is as follows: when the wear rate is (mass before friction-mass after friction)/mass before friction × 100%, a sample of 5 × 5cm was selected for the test, and the test results are shown in table 4.
TABLE 4 test results of the uppers of leather shoes of examples 1-14 and comparative examples 1-4
Analysis of the data shows that the pinhole tear strength of the leather shoe vamp prepared by the method is not lower than 110N/mm, the unilateral tear force is not lower than 94N, and the contamination resistance grade reaches the standard, so that the leather shoe vamp has excellent tear resistance and antifouling performance, and has excellent wear resistance.
Analyzing the data of the example 1 and the comparative examples 1 to 4, the anti-tearing performance of the prepared leather shoe upper is obviously improved by coating the anti-tearing agent on the surface of the nappa shoe upper, and when any one of acrylic resin, epoxy resin or phosphate solution is not added into the anti-tearing agent, the tearing resistance of the prepared leather shoe vamp is lower, which shows that the epoxy group on the epoxy resin can react with the epsilon-amino group in the collagen fiber to form a crosslinking system, the acrylic resin has higher adhesiveness and can form the crosslinking system with the epoxy resin, therefore, the acrylic resin and the epoxy resin have synergistic effect to improve the stability of the nappa vamp leather so as to realize the improvement of the tearing resistance of the vamp of the leather shoe, the prepared anti-tearing agent plays a role in lubricating fibers, reduces the possibility of dust adhesion of nappa vamp leather, and enables the vamp of the leather shoe to have good dustproof performance.
Analysis of the data of examples 12, 13 and 1 shows that the tear resistance of the shoe uppers of leather shoes obtained by using the hydroxyacrylic resin with viscosity of 1500-, at the moment, the anti-tearing performance of the nappa vamp leather is higher.
Analysis of the data of examples 14 and 13 shows that the tear resistance of the leather shoe upper obtained by using the medium molecular weight type epoxy resin with the epoxy equivalent of 710-.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. A tear-resistant leather shoe vamp is characterized in that: the shoe vamp is coated with the anti-tearing agent, and the anti-tearing agent is prepared from, by weight, 5-10 parts of hydroxyl silicone oil, 0.5-1.2 parts of fatting agent, 15-25 parts of acrylic resin, 3-7 parts of epoxy resin, 2-5 parts of phosphate solution, 0.05-0.2 part of surfactant, 0.03-0.08 part of accelerator and 0.5-1.5 parts of cross-linking agent.
2. The tear resistant leather shoe upper according to claim 1, characterized in that: the acrylic resin is hydroxyl acrylic resin.
3. The tear resistant leather shoe upper according to claim 2, characterized in that: the viscosity of the hydroxy acrylic resin at 25 ℃ is 2500-4500mPa & s.
4. The tear resistant leather shoe upper according to claim 1, characterized in that: the epoxy resin is medium molecular weight type epoxy resin.
5. The tear resistant leather shoe upper according to claim 1, characterized in that: the phosphate solution is a sodium phosphate solution.
6. The tear resistant leather shoe upper according to claim 1, characterized in that: the surfactant is a nonionic surfactant.
7. The tear resistant leather shoe upper according to claim 1, characterized in that: the accelerant is triethylene diamine.
8. The tear-resistant shoe upper according to claim 1, wherein the tear-resistant agent is prepared by a method comprising: mixing acrylic resin, epoxy resin and a cross-linking agent, heating to 60-80 ℃, uniformly stirring, sequentially adding hydroxyl silicone oil, a fatting agent, a phosphate solution, a surfactant and an accelerator, and uniformly mixing to obtain the tear resistance agent.
9. The method for preparing the tear-resistant upper of the leather shoe according to claim 1, comprising the following steps:
s1, taking the nappa vamp leather to carry out surface cleaning for later use;
s2, coating a tear-resistant agent on the surface of the washed nappa vamp leather, and drying at 80-100 ℃ to obtain the tear-resistant leather shoe vamp.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113956786A (en) * | 2021-11-15 | 2022-01-21 | 高梵(浙江)信息技术有限公司 | Aqueous anti-tearing auxiliary agent for synthetic leather |
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Denomination of invention: A tear resistant leather shoe upper and its preparation method Effective date of registration: 20220927 Granted publication date: 20220715 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Wenzhou Ouhai Louqiao small and micro franchise sub branch Pledgor: WENZHOU JUTE SHOE INDUSTRY CO.,LTD. Registration number: Y2022330002382 |