High-wear-resistance environment-friendly organic silicon leather and manufacturing process thereof

Abstract

The invention discloses high-wear-resistance environment-friendly organic silicon leather and a manufacturing process thereof. The high-wear-resistance environment-friendly organic silicon leather comprises a base cloth layer, an organic silicon layer, a surface layer and an environment-friendly surface treatment layer which are sequentially arranged from bottom to top. The surface layer made of the thermoplastic elastomer material is arranged on the organic silicon layer, so that the organic silicon leather has high wear resistance and scratch resistance; and the surface layer is subjected to surface treatment by adopting high-frequency high-voltage discharge, so that the bonding strength of the surface layer and the organic silicon layer is ensured, and meanwhile, solvent type organic glue is avoided, and the surface layer is more environment-friendly.

Description

Technical Field

[0001] The invention relates to the technical field of synthetic leather materials, and in particular to a highly wear-resistant and environment-friendly organic silicon leather and a manufacturing process thereof. Background Art

[0002] Synthetic leather is a plastic product that feels like leather and can replace leather. General synthetic leather is made of polyvinyl chloride or polyurethane. During the preparation of polyvinyl chloride synthetic leather, a large amount of plasticizers are mixed in to reduce the stiffness of the material and increase its softness. As a result, plasticizer precipitation is prone to occur, which endangers the health of consumers. Similarly, polyurethane requires solvents such as N,N-dimethylformamide, butanone, and toluene to dilute the surface coating material during wet leather making. There are a lot of solvent residues. In addition, the polyurethane foam layer may have residual free isocyanate. These substances have an impact on the health of consumers.

[0003] Compared with polyurethane synthetic leather and polyvinyl chloride synthetic leather, silicone leather has more advantages in application due to its odor-free, environmentally friendly, hydrolysis-resistant and other properties. However, silicone leather has low strength and is not wear-resistant; in addition, the surface of silicone leather is astringent and has a large friction coefficient, which makes its surface texture easy to be worn flat. The existing silicone leather usually has a wear resistance of less than 1,000 times / (1Kg), which greatly limits its application range. For example, QB / T 2703 "Automobile Decorative Leather" stipulates that the wear resistance of steering wheel leather must reach 2,000 times. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a highly wear-resistant and environmentally friendly silicone leather and a manufacturing process thereof. The prepared silicone leather has the characteristics of high wear resistance and scratch resistance, good hand feel, and environmental protection.

[0005] The technical solution of the present invention is:

[0006] The beneficial technical effects of the present invention are:

[0007] A highly wear-resistant and environmentally friendly organic silicon leather, characterized in that it comprises a base fabric layer, an organic silicon layer, a surface layer and an environmentally friendly surface layer arranged in sequence from bottom to top;

[0008] The surface layer is made of a thermoplastic elastomer material; the environmentally friendly surface treatment layer material includes 10-20 parts of a water-based bright resin L, 60-80 parts of a water-based matte resin M and 3-5 parts of a carbodiimide curing agent.

[0009] The water-based glossy resin L and the water-based matte resin M are both yellowing-resistant polyester resins. The provision of the environmentally friendly surface treatment layer makes the surface of the highly wear-resistant and environmentally friendly silicone leather of the present invention more moist and smooth.

[0010] Furthermore, in parts by weight, the material of the organic silicon layer includes 80-100 parts of vinyl siloxane, 6-10 parts of hydrogen-containing polysiloxane, 50-65 parts of vinyl silicone resin, and 35-55 parts of fumed silica.

[0011] Furthermore, in parts by weight, the material of the organic silicon layer also includes 1-3 parts of color paste, and the surface layer material includes 80-100 parts of thermoplastic elastomer material and 6-10 parts of masterbatch.

[0012] Furthermore, the surface layer is provided with a texture.

[0013] Furthermore, it is characterized in that the thermoplastic elastomer material is at least one of TPU, EVA, TPS, TPO, and silicone thermoplastic elastomer, and is more preferably TPU.

[0014] Furthermore, the base fabric layer is at least one of polyester woven fabric and polyester-cotton blended woven fabric.

[0015] Furthermore, the thickness of the organic silicon layer is 150-400 μm, and the thickness of the surface layer is 10-80 μm; preferably, the thickness of the organic silicon layer is 240-300 μm, and the thickness of the surface layer is 20-30 μm.

[0016] The present invention also provides a manufacturing process for the above-mentioned highly wear-resistant and environmentally friendly silicone leather, and the manufacturing process comprises the following steps:

[0017] S1, mixing a thermoplastic elastomer material and a masterbatch according to a ratio and putting them into an extruder, heating and extruding them onto a release paper to obtain a surface layer; and performing surface treatment on the surface layer in a high-frequency and high-voltage discharge device;

[0018] The high-frequency high-voltage discharge device is a plasma treatment device or a corona treatment device, and its main purpose is to make the surface layer have stronger adhesion and ensure the bonding strength between it and the organic silicon layer;

[0019] S2, vinyl siloxane, hydrogenated polysiloxane, vinyl silicone resin, fumed silica and color paste are mixed according to a preset ratio to obtain an organic silicon layer slurry, the organic silicon layer slurry is coated on the surface of the surface layer after high-frequency high-voltage discharge treatment, that is, an organic silicon layer is formed on the surface layer, and a side of the organic silicon layer away from the surface layer is laminated to the base fabric, and placed in an oven at a temperature of 110-130° C. for 3-6 minutes;

[0020] S3, taking the silicone leather out of the oven in step S2, and peeling off the release paper through a cooling roller;

[0021] S4, coating the surface layer of the organic silicon leather in step S3 with a water-based resin, placing it in an oven at a temperature of 110-130° C. for 2-5 minutes; thus, the highly wear-resistant and environmentally friendly organic silicon leather is obtained.

[0022] Furthermore, the surface treatment power of the corona treatment equipment is 3KW-10KW, and the treatment line speed is 0.5-3M / min.

[0023] The highly wear-resistant and environment-friendly silicone leather provided by the present invention has a textured surface layer on the silicone layer, and the surface layer is made of a thermoplastic elastomer material, thereby making the highly wear-resistant and environment-friendly silicone leather of the present invention have high wear resistance, and its wear resistance is greater than 6000 times, and the surface layer is subjected to high-frequency and high-voltage discharge treatment, so that the silicone layer and the surface layer are more firmly bonded while avoiding the use of organic glue for bonding, making it more environmentally friendly; in addition, an environmentally friendly surface treatment layer is also provided on the surface layer, and the environmentally friendly surface treatment layer is coated with a yellowing-resistant water-based resin, so that the highly wear-resistant and environment-friendly silicone leather of the present invention has a better feel when used. DETAILED DESCRIPTION

[0024] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with specific embodiments. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0025] The materials used in the present invention are as follows:

[0026] Vinyl polysiloxane: RH-v i 303;

[0027] Hydrogenated polysiloxane: RH-H3;

[0028] Vinyl silicone resin: DY-VMQ101;

[0029] Fumed silica: R8200;

[0030] Color paste (black): 6924N (GY);

[0031] Thermoplastic elastomer material: TPU M90;

[0032] Masterbatch (black): polyurethane pigment HU-8800;

[0033] Water-based bright resin L is a yellowing-resistant polyester resin: LUCKCOAT WU-2102G;

[0034] Water-based matte resin M is a yellowing-resistant polyester resin: LUCKCOAT WU-7373HM;

[0035] Carbodiimide curing agent: LUCKCOAT CL-7070;

[0036] Base fabric: Polyester woven fabric JB05.

[0037] Example 1

[0038] The present embodiment 1 provides a highly wear-resistant and environment-friendly organic silicon leather, comprising a base fabric layer, an organic silicon layer, a surface layer and an environment-friendly surface treatment layer arranged in sequence from bottom to top.

[0039] In parts by weight, the silicone layer material includes 100 parts of vinyloxysiloxane, 8 parts of hydrogenated polysiloxane, 60 parts of vinyl silicone resin, 40 parts of fumed silica powder and 2 parts of color paste; the surface layer material includes 100 parts of thermoplastic elastomer material and 8 parts of masterbatch; the environmentally friendly surface treatment layer material includes 20 parts of water-based bright resin L, 80 parts of water-based matte resin M and 5 parts of carbodiimide curing agent.

[0040] The highly wear-resistant and environment-friendly organic silicon leather of Example 1 is prepared by the following manufacturing process, and the specific manufacturing process steps are as follows:

[0041] S1, after mixing the thermoplastic elastomer material and the masterbatch according to the ratio, put them into the extruder and heat them.

[0042] The temperature was raised to 210° C., and the film was extruded onto a release paper with a textured surface to obtain a surface layer with a texture. The surface layer was placed in a corona surface treatment device (Shenzhen Hefeng Machinery Co., Ltd. / CG2000), and the side of the surface layer away from the release paper was subjected to corona surface treatment. The power of the corona machine was 6 KW, and the processing line speed was 1 M / min. The thickness of the surface layer was 30 μm.

[0043] S2, vinyl siloxane, hydrogen-containing polysiloxane, vinyl silicone resin, fumed silica and color paste are mixed evenly to obtain an organosilicon layer slurry, and the organosilicon layer slurry is applied to the surface of the surface layer treated by isohigh frequency high voltage discharge in step S1, that is, an organosilicon layer is formed on the surface layer, and the side of the organosilicon layer away from the surface layer is bonded to the base fabric, and then dried and cured, the drying temperature is 120°C, and the drying and curing time is 5 minutes; the thickness of the organosilicon layer is 200μm.

[0044] S3, taking the silicone leather prepared in step S2 out of the oven and peeling off the release paper through a cooling roller.

[0045] S4, mix the water-based glossy resin L, the water-based matte resin M and the carbodiimide curing agent evenly to obtain an environmentally friendly surface layer slurry, apply the environmentally friendly surface layer slurry on the side of the surface layer away from the base fabric in step S3, and dry it at a temperature of 120°C and a drying time of 3 minutes to form an environmentally friendly surface layer with a thickness of 8 μm, thereby obtaining the highly wear-resistant and environmentally friendly silicone leather of Example 1.

[0046] Example 2

[0047] This embodiment 2 provides a highly wear-resistant and environmentally friendly organic silicon leather, comprising a base fabric layer, an organic silicon layer, a surface layer and an environmentally friendly surface treatment layer arranged in sequence from bottom to top. Compared with embodiment 1, the difference is that the amount of each component added in the organic silicon layer material and the surface layer material and the thickness of both are different, and in the step S1 of its manufacturing process, the surface of the surface layer is treated by a plasma surface treatment device, and the remaining components and manufacturing process steps are the same.

[0048] In this embodiment 2, the silicone layer material includes 80 parts of vinyloxysiloxane, 6 parts of hydrogen-containing polysiloxane, 50 parts of vinyl silicone resin, 35 parts of fumed silica powder and 1 part of color paste, and the surface layer material includes 80 parts of thermoplastic elastomer material and 6 parts of masterbatch, and the silicone layer thickness is 160 μm.

[0049] In Example 2, S1, after the thermoplastic elastomer material and the masterbatch are mixed according to a ratio, the mixture is put into an extruder, heated to a temperature of 210°C, and extruded onto a release paper with a textured surface to obtain a surface layer with a texture; the surface layer is placed in a plasma surface treatment device (Sekisui Chemical Co., Ltd. / RD series, N2 gas), with the side of the surface layer away from the release paper being surface treated at a power of 800 W and a processing line speed of 1 M / min; the thickness of the surface layer is 25 μm.

[0050] Example 3

[0051] This embodiment 3 provides a highly wear-resistant and environmentally friendly organic silicon leather, comprising a base fabric layer, an organic silicon layer, a surface layer and an environmentally friendly surface treatment layer arranged in sequence from bottom to top. Compared with embodiment 1, the difference is that the addition amount of each component in the organic silicon layer material and the environmentally friendly surface treatment layer material is different, and the base fabric layer and the surface layer and their manufacturing processes are the same.

[0052] In this embodiment 3, the silicone layer material includes, by weight, 100 parts of vinyloxysiloxane, 10 parts of hydrogenated polysiloxane, 65 parts of vinyl silicone resin, 55 parts of fumed silica powder and 3 parts of color paste; the environmentally friendly surface treatment layer material includes 10 parts of water-based bright resin L, 60 parts of water-based matte resin M and 3 parts of carbodiimide curing agent.

[0053] The friction resistance test results of the highly wear-resistant and environment-friendly silicone leather of Examples 1-3 are shown in Table 1.

[0054] Among them, the friction resistance test: the test is carried out in accordance with the provisions of ASTMD3884-09 (2017), using a CS-10 grinding wheel (TABER) and a test condition load of 1000G.

[0055] Table 1

[0056]

[0057] As shown in Table 1, the highly wear-resistant and environment-friendly silicone leathers of Examples 1-3 all have relatively high wear resistance, and the number of friction resistances thereof is all greater than 6,000 times.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A highly wear-resistant and environmentally friendly silicone leather, characterized in that: It includes a base fabric layer, an organic silicon layer, a surface layer and an environmentally friendly surface treatment layer arranged in sequence from bottom to top; The surface layer is made of a thermoplastic elastomer material; the environmentally friendly surface treatment layer material includes 10-20 parts of a water-based bright resin L, 60-80 parts of a water-based matte resin M and 3-5 parts of a carbodiimide curing agent.

2. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 1, characterized in that: In parts by weight, the material of the organic silicon layer includes 80-100 parts of vinyl siloxane, 6-10 parts of hydrogen-containing polysiloxane, 50-65 parts of vinyl silicone resin, and 35-55 parts of fumed silica.

3. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 2, characterized in that: The material of the organic silicon layer also includes 1-3 parts of color paste by weight.

4. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 1, characterized in that: The surface layer material comprises 80-100 parts of thermoplastic elastomer material and 6-10 parts of masterbatch.

5. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 1, characterized in that: The surface layer is provided with texture.

6. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 1, characterized in that: The thermoplastic elastomer material is at least one of TPU, EVA, TPS, TPO and silicone thermoplastic elastomer.

7. The highly wear-resistant and environmentally friendly organic silicon leather according to claim 1, characterized in that: The base fabric layer is at least one of polyester woven fabric and polyester-cotton blended woven fabric.

8. The highly wear-resistant and environment-friendly organic silicon leather according to claim 1, characterized in that: The thickness of the organic silicon layer is 150-400 μm, and the thickness of the surface layer is 10-80 μm.

9. A process for manufacturing a highly wear-resistant and environment-friendly organic silicon leather according to any one of claims 1 to 8, characterized in that: The manufacturing process comprises the following steps: S1, mixing a thermoplastic elastomer material and a masterbatch according to a ratio and putting them into an extruder, heating and extruding them onto a release paper to obtain a surface layer; and performing surface treatment on the surface layer in a high-frequency and high-voltage discharge device; S2, vinyl siloxane, hydrogenated polysiloxane, vinyl silicone resin, fumed silica and color paste are mixed according to a preset ratio to obtain an organic silicon layer slurry, the organic silicon layer slurry is coated on the surface of the surface layer after high-frequency high-voltage discharge treatment, that is, an organic silicon layer is formed on the surface layer, and a side of the organic silicon layer away from the surface layer is laminated to the base fabric, and placed in an oven at a temperature of 110-130° C. for 3-6 minutes; S3, taking the silicone leather out of the oven in step S2, and peeling off the release paper through a cooling roller; S4, mixing the water-based matte resin L, the water-based matte resin M and the carbodiimide curing agent according to a preset ratio to prepare an environmentally friendly surface treatment layer material; The environmentally friendly surface treatment material is coated on the surface layer in step S3, and placed in an oven at a temperature of 110-130° C. for 2-5 minutes to obtain the highly wear-resistant and environmentally friendly silicone leather.

10. The manufacturing process according to claim 9, characterized in that: The high-frequency and high-voltage discharge equipment is one of plasma treatment equipment and corona treatment equipment.

Images