High-brightness colorful reflective leather and manufacturing process thereof

Abstract

The high-brightness colorful reflective leather comprises a leather material, modified fluorocarbon resin layers arranged on the two sides of the leather material, and modified zinc sulfide layers arranged on the two sides of the modified fluorocarbon resin layers. According to the high-brightness multicolor reflective leather and the manufacturing process thereof, the high-brightness multicolor reflective leather has good glossiness and wear resistance, and the texture of the leather is not damaged.

Description

Technical Field

[0001] The invention relates to the technical field of leather making, and in particular to a high-gloss fantasy color reflective leather and a manufacturing process thereof. Background Art

[0002] With the continuous improvement of science and technology, new processes for surface decoration are constantly emerging. The application range of leather is constantly expanding due to its wear resistance and strength. Traditional leather has a weak three-dimensional sense, a single color, and no layering, which restricts the continuous development of leather. Therefore, the development of a fantasy leather with excellent performance has good application prospects. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a high-gloss fantasy reflective leather and a manufacturing process thereof, which has good gloss and wear resistance without destroying the texture of the leather.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: A high-gloss fantasy reflective leather comprises leather material, modified fluorocarbon resin layers arranged on both sides of the leather material, and modified zinc sulfide layers arranged on both sides of the modified fluorocarbon resin layers.

[0005] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: putting the leather into a modified fluorocarbon resin solution for dipping; S3: putting the soaked leather into a drying device for drying; S4: putting the leather into a modified zinc sulfide solution for immersion; S5: putting the soaked leather into a drying device for drying; S6: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather.

[0006] Preferably, the method for preparing the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution, and magnetically stirring the mixture at a speed of 400 r / min for 30-36 h under a nitrogen protection vacuum environment to obtain a fluorocarbon resin solution; S22: Adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21 to obtain a modified fluorocarbon resin solution.

[0007] Preferably, the weight ratio of the fluorocarbon resin, D-sorbitol, KH570 coupling agent and ethanol solution is 1:5:2:20.

[0008] Preferably, the weight ratio of the nano-silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:20.

[0009] Preferably, the preparation method of the modified zinc sulfide comprises the following steps: S41: Stir polyvinyl alcohol and deionized water at 90-95° C. for 12-24 h, and cool to room temperature; S42: adding 55% by volume acetic acid solution and glutaraldehyde to the solution obtained in step S31, stirring for 5-20 min, then adding zinc sulfide, PEG4000 and ethyl acetate, stirring for 40-50 min, to obtain a modified zinc sulfide solution.

[0010] Preferably, the weight ratio of the polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:6.

[0011] Preferably, the process parameters of the immersion in steps S2 and S4 are: the immersion pressure is 0.4-0.6Pa.

[0012] Preferably, the process parameters of the drying in step S3 are: low-temperature drying: the baking temperature is 70-80° C., and the drying time is about 5 yards / minute.

[0013] Preferably, the process parameters of the drying in step S5 are: high temperature drying: the baking temperature is 160-180° C., and the drying time is about 5 yards / minute.

[0014] The functionalized fluorocarbon resin of the present invention enables full combination between nanoparticles and leather fabrics, thereby enhancing the cohesive force. The long molecular chain fluorocarbon resin also helps to evenly disperse the nanoparticles. By heating at low temperature, the nanoparticles with high gloss and light reflectivity are partially embedded in the leather, thereby increasing the gloss of the leather while reducing the pore size of the leather, optimizing the pore structure of the leather, and increasing the ability of the leather to withstand hydrostatic pressure. The presence of the modified zinc sulfide layer can give the leather a magical effect and metallic luster, thereby improving the aesthetics and grade of the product. In addition, by modifying polyvinyl alcohol, long-chain crosslinks are formed to cover the surface of the modified fluorocarbon resin, and the interface interaction and bridging effect with the modified fluorocarbon resin are enhanced, so that the modified fluorocarbon resin further has barrier properties, thereby improving the wear resistance and mechanical properties of the leather. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. In addition, it is specifically stated that the raw materials and equipment of the present invention can be obtained from commercial sources, and no longer listed one by one. Among them, the raw materials of the present invention can be obtained from commercial sources and are well known to those skilled in the art. Embodiment 1

[0016] A high-gloss fantasy reflective leather comprises leather material, modified fluorocarbon resin layers arranged on both sides of the leather material, and modified zinc sulfide layers arranged on both sides of the modified fluorocarbon resin layers.

[0017] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: placing the leather into a modified fluorocarbon resin solution and dipping it at a pressure of 0.4-0.6 Pa, wherein the preparation method of the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution in a weight ratio of 1:5:2:20, and magnetically stirring the mixture at a speed of 400 r / min for 30 h under a nitrogen-protected vacuum environment to obtain a fluorocarbon resin solution; S22: adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21, wherein the weight ratio of nano-silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:20, to obtain a modified fluorocarbon resin solution; S3: putting the soaked leather into a drying device for low-temperature drying, the baking temperature is 70°C, and the drying time is about 5 yards / minute; S4: placing the leather into a modified zinc sulfide solution and dipping it at a pressure of 0.4 Pa, wherein the preparation method of the modified zinc sulfide comprises the following steps: S41: Stir polyvinyl alcohol and deionized water at 90° C. for 12 h and cool to room temperature; S42: adding 55% by volume acetic acid solution and glutaraldehyde to the solution obtained in step S31, stirring for 5 minutes, then adding zinc sulfide, PEG4000 and ethyl acetate, stirring for 40 minutes, to obtain a modified zinc sulfide solution.

[0018] Wherein, the weight ratio of polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:6; S5: putting the soaked leather into a drying device for high-temperature drying, the baking temperature is 160°C, and the drying time is about 5 yards / minute; S6: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather. Embodiment 2

[0019] A high-gloss fantasy reflective leather comprises leather material, modified fluorocarbon resin layers arranged on both sides of the leather material, and modified zinc sulfide layers arranged on both sides of the modified fluorocarbon resin layers.

[0020] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: placing the leather into a modified fluorocarbon resin solution and dipping it at a pressure of 0.6 Pa, wherein the preparation method of the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution in a weight ratio of 1:5:2:20, and magnetically stirring the mixture at a speed of 400 r / min for 36 h under a nitrogen protection vacuum environment to obtain a fluorocarbon resin solution; S22: adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21, wherein the weight ratio of nano-silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:20, to obtain a modified fluorocarbon resin solution; S3: putting the soaked leather into a drying device for low-temperature drying, the baking temperature is 80°C, and the drying time is about 5 yards / minute; S4: placing the leather into a modified zinc sulfide solution and dipping it at a pressure of 0.6 Pa, wherein the preparation method of the modified zinc sulfide comprises the following steps: S41: Stir polyvinyl alcohol and deionized water at 95° C. for 24 h and cool to room temperature; S42: adding 55% by volume acetic acid solution and glutaraldehyde to the solution obtained in step S31, stirring for 20 minutes, then adding zinc sulfide, PEG4000 and ethyl acetate, stirring for 50 minutes, to obtain a modified zinc sulfide solution.

[0021] Wherein, the weight ratio of polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:6; S5: putting the soaked leather into a drying device for high-temperature drying, the baking temperature is 180°C, and the drying time is about 5 yards / minute; S6: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather. Embodiment 3

[0022] A high-gloss fantasy reflective leather comprises leather material, modified fluorocarbon resin layers arranged on both sides of the leather material, and modified zinc sulfide layers arranged on both sides of the modified fluorocarbon resin layers.

[0023] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: placing the leather into a modified fluorocarbon resin solution and dipping it at a pressure of 0.5 Pa, wherein the preparation method of the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution in a weight ratio of 1:5:2:20, and magnetically stirring the mixture at a speed of 400 r / min for 32 h under a nitrogen-protected vacuum environment to obtain a fluorocarbon resin solution; S22: adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21, wherein the weight ratio of nano-silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:20, to obtain a modified fluorocarbon resin solution; S3: putting the soaked leather into a drying device for low-temperature drying at a temperature of 75°C and a drying time of about 5 yards per minute; S4: placing the leather into a modified zinc sulfide solution and dipping it at a pressure of 0.5 Pa, wherein the preparation method of the modified zinc sulfide comprises the following steps: S41: Stir polyvinyl alcohol and deionized water at 92° C. for 18 h and cool to room temperature; S42: adding 55% by volume acetic acid solution and glutaraldehyde to the solution obtained in step S31, stirring for 15 minutes, then adding zinc sulfide, PEG4000 and ethyl acetate, stirring for 45 minutes, to obtain a modified zinc sulfide solution.

[0024] Wherein, the weight ratio of polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:6; S5: putting the soaked leather into a drying device for high-temperature drying, the baking temperature is 170°C, and the drying time is about 5 yards / minute; S6: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather. Comparative Example 1

[0025] The manufacturing process of Comparative Example 1 is basically the same as that of Example 1, except that the leather material is not impregnated with the modified fluorocarbon resin solution, specifically: A high-gloss fantasy reflective leather comprises leather material and modified zinc sulfide layers arranged on both sides of the leather material.

[0026] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: placing the leather into a modified zinc sulfide solution and dipping it at a pressure of 0.4 Pa, wherein the preparation method of the modified zinc sulfide comprises the following steps: Stir polyvinyl alcohol and deionized water at 90 °C for 12 h and cool to room temperature; A 55% volume fraction of acetic acid solution and glutaraldehyde were added to the solution obtained in step S31, and after stirring for 5 minutes, zinc sulfide, PEG4000 and ethyl acetate were added, and stirred for 40 minutes to obtain a modified zinc sulfide solution.

[0027] Wherein, the weight ratio of polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:6; S3: putting the soaked leather into a drying device for high-temperature drying, the baking temperature is 160°C, and the drying time is about 5 yards / minute; S4: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather. Comparative Example 2

[0028] The manufacturing process of Comparative Example 2 is basically the same as that of Example 1, except that the leather material is not immersed in the modified zinc sulfide solution, specifically: A high-gloss fantasy reflective leather comprises leather material and modified fluorocarbon resin layers arranged on both sides of the leather material.

[0029] A manufacturing process of high-gloss fantasy reflective leather comprises the following steps: S1: drying, grinding and beating the leather to obtain leather; S2: placing the leather into a modified fluorocarbon resin solution and dipping it at a pressure of 0.4-0.6 Pa, wherein the preparation method of the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution in a weight ratio of 1:5:2:20, and magnetically stirring the mixture at a speed of 400 r / min for 30 h under a nitrogen-protected vacuum environment to obtain a fluorocarbon resin solution; S22: adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21, wherein the weight ratio of nano-silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:20, to obtain a modified fluorocarbon resin solution; S3: putting the soaked leather into a drying device for low-temperature drying, the baking temperature is 70°C, and the drying time is about 5 yards / minute; S4: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather.

[0030] The leathers of Examples 1-3, the commercially available leathers of Dongguan Hanshi Leather Co., Ltd., and the leathers obtained in Comparative Examples 1 and 2 were tested for glossiness, abrasion resistance, peel strength, and friction fading.

[0031] Gloss: tested using a photoelectric gloss meter.

[0032] Abrasion resistance: The abrasion resistance of leather was measured according to the provisions of JIS L 1096 method. The number of frictions was set to 20,000 times, and the weight reduction rate after friction was divided into 5 levels for evaluation. It is expressed as weight reduction rate (%) = {(original fabric weight - weight after friction) / (original fabric weight)} × 100. When the weight reduction rate is 4% or more, it is evaluated as 3 or less, when it is 2% or more and less than 4%, it is evaluated as 4%, and when it is less than 2%, it is evaluated as 5.

[0033] Peel strength performance test: Peel strength test was performed using ASTM D751 standard.

[0034] Color fastness to rubbing performance test: DIN EN ISO 11640 standard is used for color fastness to rubbing test.

[0035] The results are shown in Table 1.

[0036] Table 1

[0037] It can be seen from the above table that the performance of the leather obtained in Examples 1-3 is also improved compared with the comparative example and commercially available waterproof leather, and has excellent gloss and mechanical properties.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-gloss fantasy reflective leather, characterized in that: The invention comprises leather material, modified fluorocarbon resin layers arranged on both sides of the leather material, and modified zinc sulfide layers arranged on both sides of the modified fluorocarbon resin layers.

2. A manufacturing process of the high-gloss magic color reflective leather as claimed in claim 1, characterized in that: The following steps are involved: S1: drying, grinding and beating the leather to obtain leather; S2: putting the leather into a modified fluorocarbon resin solution for dipping; S3: putting the soaked leather into a drying device for drying; S4: putting the leather into a modified zinc sulfide solution for immersion; S5: putting the soaked leather into a drying device for drying; S6: Roll the dried leather and store it in a warehouse to obtain high-gloss iridescent reflective leather.

3. The method for preparing the high elastic PVC reflective film according to claim 5, characterized in that: The preparation method of the modified fluorocarbon resin solution comprises the following steps: S21: mixing a fluorocarbon resin, D-sorbitol, a KH570 coupling agent and a 75% by volume ethanol solution, and magnetically stirring the mixture at a speed of 400 r / min for 30-36 h under a nitrogen protection vacuum environment to obtain a fluorocarbon resin solution; S22: Adding nano-silicon dioxide, sodium dodecyl sulfate and glass fiber to the fluorocarbon resin solution of step S21 to obtain a modified fluorocarbon resin solution.

4. The method for preparing the high elastic PVC reflective film according to claim 3, characterized in that: The weight ratio of the fluorocarbon resin, D-sorbitol, KH570 coupling agent and ethanol solution is 1:5:2:

20.

5. The method for preparing the high elastic PVC reflective film according to claim 3, characterized in that: The weight ratio of the nano silicon dioxide, sodium dodecyl sulfate, glass fiber and fluorocarbon resin solution is 3:2:1:

20.

6. The method for preparing the high elastic PVC reflective film according to claim 2, characterized in that: The preparation method of the modified zinc sulfide comprises the following steps: S41: Stir polyvinyl alcohol and deionized water at 90-95° C. for 12-24 h, and cool to room temperature; S42: adding 55% by volume acetic acid solution and glutaraldehyde to the solution obtained in step S31, stirring for 5-20 min, then adding zinc sulfide, PEG4000 and ethyl acetate, stirring for 40-50 min, to obtain a modified zinc sulfide solution.

7. The method for preparing the high elastic PVC reflective film according to claim 6, characterized in that: The weight ratio of the polyvinyl alcohol, deionized water, acetic acid solution, glutaraldehyde, zinc sulfide, PEG4000 and ethyl acetate is 1:20:10:1::2:4:

6.

8. The manufacturing process of the high-gloss magic color reflective leather according to claim 2, characterized in that: The process parameters of the immersion in steps S2 and S4 are: the immersion pressure is 0.4-0.6Pa.

9. The manufacturing process of the high-gloss magic color reflective leather according to claim 2, characterized in that: The process parameters of the drying in step S3 are: low-temperature drying: the baking temperature is 70-80° C., and the drying time is about 5 yards / minute.

10. The manufacturing process of the high-gloss magic color reflective leather according to claim 2, characterized in that: The process parameters of the drying in step S5 are: high temperature drying: the baking temperature is 160-180° C., and the drying time is about 5 yards / minute.

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