PVC artificial leather with stable color and high wear resistance

Abstract

The invention discloses PVC artificial leather with stable color and high wear resistance. The PVC artificial leather comprises a base cloth layer, a middle layer and a surface layer, a piece of grid glass fiber cloth is arranged between the base cloth layer and the middle layer; the thickness of the base cloth layer is 1.8 to 3mm, the thickness of the middle layer is 1 to 1.5 mm, and the thickness of the surface layer is 0.5 to 0.8 mm. The grid glass fiber cloth is arranged between the base cloth layer and the middle layer by coating a polyurethane adhesive between the base cloth layer and the middle layer. The middle layer is prepared from the following components in parts by mass: 70-80 parts of PVC (Polyvinyl Chloride); 10 to 15 parts of nylon; 10 to 15 parts of chopped fiber; 3-6 parts of a curing agent; the surface layer is prepared from the following components in parts by mass: 60 to 70 parts of water-based polyurethane; 10 to 16 parts of nano titanium dioxide; 1-2 parts of a stabilizer; and 2-3 parts of a plasticizer. According to the present invention, by adding the multiple components, the stable color of the leather is retained, and the whole artificial leather has characteristics of strong stretching ability and strong tearing strength.

Description

Technical Field

[0001] The invention belongs to the field of leather preparation, in particular to a PVC artificial leather with stable color and high wear resistance. Background Art

[0002] With the development of modern technology, people's performance requirements for various products are constantly improving, and the same is true for the automotive interior industry. In the early days of automobiles, genuine leather was generally used for automotive interiors, including the leather of seats. The reason is that due to the limitations of early technological development and people's requirements for comfort, the demand for genuine leather is particularly large. However, the limitation of genuine leather is that it is expensive and requires more chemical reagents during the production process. In fact, the processing and production process of genuine leather interiors is not environmentally friendly.

[0003] Later, people have been looking for other materials to replace leather. Some artificial materials imitate leather to make people feel the comfort and better skin feel of leather, but the color and performance of these artificial materials are greatly reduced. These artificial materials of simulated leather are generally single in color, which will cause visual fatigue in the long run, and these materials have poor wear resistance. After a period of use, cracks are prone to appear. Once cracks appear, the interior has to be replaced, which indirectly greatly increases the cost of use. Summary of the invention

[0004] The present invention aims at the problems existing in the prior art and discloses a PVC artificial leather with stable color and high wear resistance. In the present invention, multiple components are added so that the leather of the present invention retains stable color, and the artificial leather as a whole has stronger tensile ability and stronger tear strength.

[0005] The present invention is achieved in that:

[0006] A color-stable and highly wear-resistant PVC artificial leather, characterized in that the PVC artificial leather comprises a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer;

[0007] The intermediate layer is prepared from the following components in parts by mass:

[0008] PVC: 70-80 parts;

[0009] Nylon: 10-15 parts;

[0010] Chopped fibers: 10-15 parts;

[0011] Curing agent: 3-6 parts;

[0012] The surface layer is prepared from the following components in parts by mass:

[0013] Water-based polyurethane: 60-70 parts;

[0014] Nano titanium dioxide: 10-16 parts;

[0015] Stabilizer: 1-2 parts;

[0016] Plasticizer: 2 to 3 parts.

[0017] Furthermore, the thickness of the base fabric layer is 1.8-3 mm, the thickness of the middle layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm.

[0018] Furthermore, the chopped fibers are 2 to 3 mm.

[0019] Furthermore, the curing agent is tetraethyl orthosilicate.

[0020] Furthermore, the stabilizer is potassium dihydrogen phosphate.

[0021] Further, the phthalate.

[0022] Furthermore, the gridded glass fiber cloth is arranged between the base cloth layer and the middle layer by coating a polyurethane adhesive between the base cloth layer and the middle layer.

[0023] Furthermore, the middle layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0024] Further, the intermediate layer is prepared from the following components in parts by mass:

[0025] PVC: 75 parts;

[0026] Nylon: 12 parts;

[0027] Chopped fiber: 12 parts;

[0028] Curing agent: 5 parts;

[0029] The surface layer is prepared from the following components in parts by mass:

[0030] Water-based polyurethane: 65 parts;

[0031] Nano titanium dioxide: 14 parts;

[0032] Stabilizer: 1 part;

[0033] Plasticizer: 2 parts.

[0034] Furthermore, the addition amount of nylon and chopped fibers is 1:1.

[0035] The beneficial effects of the present invention compared with the prior art are:

[0036] In the present invention, nano titanium dioxide is added to the leather to play an antibacterial role. Titanium dioxide can improve the stability of the leather to light and heat. Adding titanium dioxide to the leather surface can also play a self-cleaning role on the leather surface. Since titanium dioxide is on the leather surface, dirt is not easy to stay on the leather surface.

[0037] In addition, titanium dioxide is combined with polyurethane to improve the anti-ultraviolet and anti-aging capabilities of the leather surface and retain the color stability of the leather. In addition, the present invention adds short-cut fibers to the middle layer, and the short-cut fibers in the middle layer make the artificial leather as a whole have stronger tensile ability and stronger tear strength. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail by enumerating examples below. It should be noted that the specific implementation described here is only used to explain the present invention and is not used to limit the present invention.

[0039] Example 1

[0040] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0041] The middle layer is prepared from the following components in parts by mass: PVC: 75 parts; nylon: 12 parts; chopped fibers: 12 parts; curing agent: 5 parts; the surface layer is prepared from the following components in parts by mass: water-based polyurethane: 65 parts; nano titanium dioxide: 14 parts; stabilizer: 1 part; plasticizer: 2 parts.

[0042] Example 2

[0043] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0044] The middle layer is prepared from the following components in parts by mass: 70 parts of PVC; 10 parts of nylon; 10 parts of chopped fibers; 3 parts of curing agent; the surface layer is prepared from the following components in parts by mass: 60 parts of water-based polyurethane; 10 parts of nano titanium dioxide; 1 part of stabilizer; and 2 parts of plasticizer.

[0045] Example 3

[0046] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0047] The middle layer is prepared from the following components in parts by mass: 80 parts of PVC; 15 parts of nylon; 15 parts of chopped fibers; 6 parts of curing agent; the surface layer is prepared from the following components in parts by mass: 70 parts of water-based polyurethane; 16 parts of nano titanium dioxide; 2 parts of stabilizer; and 3 parts of plasticizer.

[0048] Example 4

[0049] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0050] The middle layer is prepared from the following components in parts by mass: 72 parts of PVC; 12 parts of nylon; 12 parts of chopped fibers; 5 parts of curing agent; the surface layer is prepared from the following components in parts by mass: 62 parts of water-based polyurethane; 14 parts of nano titanium dioxide; 2 parts of stabilizer; and 3 parts of plasticizer.

[0051] Example 5

[0052] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0053] The middle layer is prepared from the following components in parts by mass: PVC: 79 parts; nylon: 14 parts; chopped fibers: 14 parts; curing agent: 4 parts; the surface layer is prepared from the following components in parts by mass: water-based polyurethane: 66 parts; nano titanium dioxide: 14 parts; stabilizer: 2 parts; plasticizer: 3 parts.

[0054] Example 6

[0055] The PVC artificial leather of this embodiment includes a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer; the thickness of the base fabric layer is 1.8-3 mm, the thickness of the intermediate layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm. The mesh glass fiber cloth is arranged between the base fabric layer and the intermediate layer by coating a polyurethane adhesive between the base fabric layer and the intermediate layer. The intermediate layer needs to be prepared by foaming, and the specific process is: PVC, nylon, chopped fibers, and a curing agent are cured and foamed at a temperature of 50°C.

[0056] The middle layer is prepared from the following components in parts by mass: PVC: 77 parts; nylon: 11 parts; chopped fibers: 11 parts; curing agent: 4 parts; the surface layer is prepared from the following components in parts by mass: water-based polyurethane: 69 parts; nano titanium dioxide: 12 parts; stabilizer: 2 parts; plasticizer: 2 parts.

[0057] The PVC artificial leather of the above embodiment was subjected to performance testing, and the results are shown in Table 1 below:

[0058] Table 1

[0059] Tensile strength(MPa) Tear strength (KN / m) Example 1 1.2 2.31 Example 2 0.8 1.97 Example 3 0.9 1.98 Example 4 0.7 2.07 Example 5 1.1 2.11 Example 6 0.9 1.95

[0060] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A color-stable and highly wear-resistant PVC artificial leather, characterized in that: The PVC artificial leather comprises a base fabric layer, an intermediate layer, and a surface layer; a mesh glass fiber fabric is arranged between the base fabric layer and the intermediate layer; The intermediate layer is prepared from the following components in parts by mass: PVC: 70~80 parts; Nylon: 10~15 parts; Chopped fiber: 10~15 parts; Curing agent: 3~6 parts; The surface layer is prepared from the following components in parts by mass: Water-based polyurethane: 60-70 parts; Nano titanium dioxide: 10-16 parts; Stabilizer: 1~2 parts; Plasticizer: 2~3 parts.

2. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The thickness of the base fabric layer is 1.8-3 mm, the thickness of the middle layer is 1-1.5 mm, and the thickness of the surface layer is 0.5-0.8 mm.

3. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The chopped fibers are 2-3 mm in diameter.

4. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The curing agent is tetraethyl orthosilicate.

5. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The stabilizer is potassium dihydrogen phosphate.

6. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The phthalates.

7. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The gridded glass fiber cloth is arranged between the base cloth layer and the middle layer by coating a polyurethane adhesive between the base cloth layer and the middle layer.

8. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The middle layer needs to be prepared by foaming, and the specific process is: PVC, nylon, short-cut fibers, The curing agent is cured and foamed at a temperature of 50°C.

9. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The intermediate layer is prepared from the following components in parts by mass: PVC: 75 parts; Nylon: 12 parts; Chopped fiber: 12 parts; Curing agent: 5 parts; The surface layer is prepared from the following components in parts by mass: Water-based polyurethane: 65 parts; Nano titanium dioxide: 14 parts; Stabilizer: 1 part; Plasticizer: 2 parts.

10. The color-stable and highly wear-resistant PVC artificial leather according to claim 1, characterized in that: The addition amount of nylon and chopped fibers is 1:1.