Preparation method of anti-ultraviolet and anti-infrared dual-protection artificial leather

Abstract

The invention discloses a preparation method of anti-ultraviolet and anti-infrared dual-protection artificial leather, and relates to a textile material technology. The preparation method comprises the following steps: weighing a certain amount of PU-2540 waterborne polyurethane (resin), and respectively adding a flatting agent and a dispersing agent into the PU-2540 waterborne polyurethane (resin); weighing a certain amount of hollow glass beads with a particle size of 85 [mu] m and an NXZ foaming agent; placing the pretreated resin solution on a dispersion machine and stirring, in the process, firstly slowly adding the hollow glass beads into the resin solution, then slowly adding the foaming agent, slowly adding a small amount of the thickening agent by using a dropper, stirring for 5 minutes to complete the preparation, and determining that the preparation is successful when the viscosity is measured to be 35000Pa. S by using a digital viscometer. The anti-ultraviolet and anti-infrared dual-protection artificial leather is prepared, the efficient anti-ultraviolet and anti-infrared dual-protection effects can be provided, the flexibility and mechanical performance of the material can be kept, and the anti-ultraviolet and anti-infrared dual-protection artificial leather can adapt to various complex application environments.

Description

Technical Field

[0001] The invention belongs to the technical field of textile materials, and in particular relates to a method for preparing artificial leather with dual protection properties of anti-ultraviolet and anti-infrared. Background Art

[0002] As people pay more attention to environmental protection and sustainable development, artificial leather has been widely used as a substitute for natural leather. Artificial leather has the advantages of low cost, high production efficiency, and adjustable performance. However, the existing single-function anti-ultraviolet or anti-infrared artificial leather can no longer meet the market demand. For example, in some high-end outdoor equipment or smart car interior fields, an artificial leather with dual protection functions of anti-ultraviolet and anti-infrared is needed to provide better protection and comfort. In this context, it is of great practical significance to develop a simple, efficient and cost-effective preparation method for artificial leather with dual protection of anti-ultraviolet and anti-infrared.

[0003] At present, there are few studies on materials with both anti-ultraviolet and anti-infrared properties, and people often only focus on one direction. For example, patent document number CN118994727A is an anti-ultraviolet artificial leather surface treatment agent and its preparation method, and CN118718944A is a preparation device for composite nano-tin oxide for anti-infrared coating and its use method. They are not suitable for widespread application in various fields. Research on artificial leather with dual protection of anti-ultraviolet and anti-infrared is still in its infancy and needs further exploration.

[0004] This patent aims to solve the above technical problems and provide a method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared. The method takes into account both anti-ultraviolet and anti-infrared properties and optimizes the dual protection properties of artificial leather. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared, so as to solve the problem that the above background technology only focuses on a single protection technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared, comprising the following steps:

[0008] S1. Weigh 200 g of PU-2540 waterborne polyurethane (resin) using an electronic balance, and add 3% (6 g) of leveling agent and 3% (6 g) of dispersant by mass thereto respectively;

[0009] S2, weighing a certain amount of hollow glass microspheres with a particle size of 85 μm and 0.2% (0.4 g) of NXZ foaming agent;

[0010] S3. Place the pretreated resin solution on the table of the laboratory sample dispersing machine and run the machine for stirring. During the process, slowly add hollow glass microbeads to the resin solution, then slowly add the foaming agent, and slowly add a small amount of thickener dropwise. After stirring for 5 minutes, the preparation is completed. The viscosity is measured by a digital viscometer and is 35000Pa. · s, the preparation is successful.

[0011] Preferably, the substrate used in S1 is PU-2540 water-based polyurethane.

[0012] Preferably, the mass fraction of hollow glass microspheres with a particle size of 85 μm in S2 is 16%.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can effectively prepare artificial leather with dual protection of anti-ultraviolet and anti-infrared. The material can not only provide efficient dual protection effect of anti-ultraviolet and anti-infrared, but also maintain the flexibility and mechanical properties of the material, and can adapt to various complex application environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a preparation flow chart of the present invention.

[0016] Figure 2 This is a graph showing the UV resistance of the samples in the present invention.

[0017] Figure 3 This is the single-band infrared emissivity diagram of the sample in the present invention DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] See also Figure 1 The present invention discloses a method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared, comprising the following steps:

[0021] Step 1: Weigh 200 g of PU-2540 waterborne polyurethane (resin) using an electronic balance, and add 3% (6 g) of leveling agent and 3% (6 g) of dispersant respectively;

[0022] Step 2: Weigh a certain amount of hollow glass microspheres with a particle size of 85 μm and 0.2% (0.4 g) of NXZ foaming agent;

[0023] Step 3: Place the pretreated resin solution on the table of the laboratory sample disperser and run the machine for stirring. During the process, slowly add hollow glass beads to the resin solution, then slowly add the foaming agent, and slowly add a small amount of thickener dropwise. After stirring for 5 minutes, the preparation is completed. Use a digital viscometer to measure the viscosity. If it is 35000Pa·s, the preparation is successful.

[0024] Experimental results:

[0025] The ultraviolet protection factor (UPF) of the artificial leather with both anti-ultraviolet and anti-infrared protection prepared in this embodiment reaches 10. Figure 2 As shown, the transmittance of the sample to long-wave ultraviolet UVA is 10.69%, and the transmittance to medium-wave ultraviolet UVB is 8.23%.

[0026] like Figure 3 As shown, the single-band infrared emissivity of the artificial leather with dual protection against ultraviolet and infrared prepared in the implementation case is 0.819.

[0027] The above is only a preferred embodiment of the present invention, which is only used to help understand the method of the present invention and its core essence, but the protection scope of the present invention is not limited thereto. For those skilled in the art in the art, equivalent replacement or change according to the technical solution and inventive concept of the present invention within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared, characterized in that: The steps include: S1. Weigh 200 g of PU-2540 waterborne polyurethane (resin) using an electronic balance, and add 3% (6 g) of leveling agent and 3% (6 g) of dispersant by mass thereto respectively; S2, weighing a certain amount of hollow glass microspheres with a particle size of 85 μm and 0.2% (0.4 g) of NXZ foaming agent; S3. Place the pretreated resin solution on the table of the laboratory sample disperser and run the machine for stirring. During the process, slowly add hollow glass beads to the resin solution, then slowly add the foaming agent, and slowly add a small amount of thickener dropwise. After stirring for 5 minutes, the preparation is completed. The viscosity is measured by a digital viscometer and is 35000 Pa·s, indicating that the preparation is successful.

2. The method for preparing artificial leather with dual protection of anti-ultraviolet and anti-infrared according to claim 1, characterized in that: The substrate used in S1 is PU-2540 water-based polyurethane.

3. The method for preparing the artificial leather with both anti-ultraviolet and anti-infrared dual protection according to claim 1, characterized in that: The mass fraction of hollow glass microspheres with a particle size of 85 μm in S2 is 16% (32 g).

4. A method for preparing artificial leather having both anti-ultraviolet and anti-infrared dual protection as claimed in any one of claims 1 to 3.

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