Antistatic thermoplastic elastomer artificial leather and preparation method thereof

Abstract

The invention discloses antistatic thermoplastic elastomer artificial leather, which belongs to the field of leather preparation, and sequentially comprises a base cloth layer, a middle foaming layer and a surface layer, the middle foaming layer is a polyvinyl chloride foaming layer, and the surface layer is an antistatic surface layer; the polyvinyl chloride foaming layer is prepared from the following components in parts by mass: 70-80 parts of polyvinyl chloride; 10 to 12 parts of a retanning fatliquor; 8 to 10 parts of filler; the antistatic surface layer is prepared from the following components in parts by mass: 70-80 parts of PVC (Polyvinyl Chloride) resin; 10 to 15 parts of organic silicon; 20 to 30 parts of a plasticizer; 6-8 parts of an antistatic agent; and 3-4 parts of conductive carbon black. Innovative selection and adjustment are performed from the inner layer of the leather and the surface components of the leather, so that the durability of the leather is improved, and meanwhile, the skin feeling comfort of the leather is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of leather preparation, in particular to an antistatic thermoplastic elastomer artificial leather and a preparation method thereof. Background Art

[0002] With the development of the automobile industry, people's requirements for automobiles are no longer limited to the performance of the power system. While paying attention to performance, people also pay attention to the interior of the car. The seat is undoubtedly the top priority of the car interior. The beautiful and high-end car interior often gives people a refreshing feeling and often leaves a deep impression on people who buy or even look at the car. As the interior of the car, the leather plays the role of the interior facade.

[0003] In the past, the focus of automobile interior decoration was on the glossiness of the interior leather or the properties of the leather surface, and the durability of the leather and the actual skin feel were often ignored. The above content is often overlooked by technicians in this field. For this reason, the present invention discloses an antistatic thermoplastic elastomer artificial leather and a preparation method thereof. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention discloses an antistatic thermoplastic elastomer artificial leather and a preparation method thereof. The present invention innovatively selects and adjusts the inner layer of the leather and the surface components of the leather, thereby solving the problem of improving the durability of the leather and greatly improving the skin comfort of the leather.

[0005] The present invention is achieved in that:

[0006] An antistatic thermoplastic elastomer artificial leather, characterized in that the artificial leather comprises a base fabric layer, an intermediate foaming layer, and a surface layer in sequence; the intermediate foaming layer is a polyvinyl chloride foaming layer, and the surface layer is an antistatic surface layer;

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

[0008] Polyvinyl chloride: 70-80 parts;

[0009] Retanning fatliquor: 10-12 parts;

[0010] Filler: 8-10 parts;

[0011] The antistatic surface layer is prepared from the following components in parts by mass:

[0012] PVC resin: 70-80 parts;

[0013] Silicone: 10-15 parts;

[0014] Plasticizer: 20-30 parts;

[0015] Antistatic agent: 6-8 parts;

[0016] Conductive carbon black: 3-4 parts.

[0017] Furthermore, the filler in the polyvinyl chloride foam layer is soft fiber filler.

[0018] Furthermore, elastic fibers are arranged between the base fabric layer and the middle foaming layer; and elastic fibers are arranged between the middle foaming layer and the surface layer.

[0019] Furthermore, the mass ratio of the antistatic agent to the conductive carbon black is 2:1.

[0020] Furthermore, the base fabric layer is non-woven fabric.

[0021] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0022] Step 1: Clean the base fabric and dry it;

[0023] Step 2, preparing a polyvinyl chloride foaming layer: weighing polyvinyl chloride: 70-80 parts, retanning fatliquor: 10-12 parts, filler: 8-10 parts according to mass; hot-melt treating the above components, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming;

[0024] Step 3, preparing an antistatic surface layer: weighing 70-80 parts of PVC resin, 10-15 parts of silicone, 20-30 parts of plasticizer, 6-8 parts of antistatic agent, and 3-4 parts of conductive carbon black by weight, and performing hot-melt treatment, stirring evenly, and preparing into a paste after treatment; then roller-coating the paste on the upper surface of the antistatic surface layer obtained in step 2;

[0025] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0026] Step 5: Hang to dry;

[0027] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0028] The beneficial effects of the present invention compared with the prior art are:

[0029] In the present invention, the retanning fatliquor is added to the middle foaming layer so that the leather of the present invention has better elasticity, so that the leather of the present invention can provide passengers with better comfort when used in automobile seats; in the present invention, organic silicon is used to prepare the antistatic surface layer, so that the leather of the present invention has good environmental protection performance, the leather is odorless and non-toxic, and has excellent wear resistance, antistatic and UV resistance. In the present invention, the combination of the antistatic agent and the conductive carbon black is used so that the surface layer of the present invention has a stronger antistatic effect, and the product of the present invention has a wider application space. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0033] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0034] Step 2, preparing a polyvinyl chloride foam layer: weighing polyvinyl chloride: 75 parts, retanning fatliquor: 11 parts, filler: 9 parts by mass; subjecting the above components to hot melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming;

[0035] Step 3, preparing an antistatic surface layer: weighing 75 parts of PVC resin, 13 parts of silicone, 25 parts of plasticizer, 8 parts of antistatic agent, and 4 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then applying the paste by roller on the upper surface of the antistatic surface layer obtained in step 2;

[0036] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0037] Step 5: Hang to dry;

[0038] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0039] Example 2

[0040] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0041] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0042] Step 2, preparing a polyvinyl chloride foam layer: weighing 80 parts of polyvinyl chloride, 12 parts of retanning fatliquor, and 10 parts of filler according to mass; subjecting the above components to hot-melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating to a certain thickness, putting it into a foaming furnace for foaming;

[0043] Step 3, preparing an antistatic surface layer: weighing 80 parts of PVC resin, 15 parts of silicone, 30 parts of plasticizer, 8 parts of antistatic agent, and 4 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then applying the paste by roller on the upper surface of the antistatic surface layer obtained in step 2;

[0044] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0045] Step 5: Hang to dry;

[0046] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0047] Example 3

[0048] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0049] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0050] Step 2, preparing a polyvinyl chloride foaming layer: weighing polyvinyl chloride: 70 parts, retanning fatliquor: 10 parts, filler: 8 parts according to mass; hot-melt treating the above components, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming;

[0051] Step 3, preparing an antistatic surface layer: weighing 70 parts of PVC resin, 10 parts of silicone, 20 parts of plasticizer, 6 parts of antistatic agent, and 3 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then roller-coating the paste on the upper surface of the antistatic surface layer obtained in step 2;

[0052] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0053] Step 5: Hang to dry;

[0054] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0055] Example 4

[0056] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0057] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0058] Step 2, preparing a polyvinyl chloride foam layer: weighing polyvinyl chloride: 75 parts, retanning fatliquor: 11 parts, filler: 8 parts by mass; subjecting the above components to hot melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming;

[0059] Step 3, preparing an antistatic surface layer: weighing 76 parts of PVC resin, 13 parts of silicone, 26 parts of plasticizer, 6 parts of antistatic agent, and 3 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then applying the paste by roller to the upper surface of the antistatic surface layer obtained in step 2;

[0060] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0061] Step 5: Hang to dry;

[0062] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0063] Example 5

[0064] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0065] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0066] Step 2, preparing a polyvinyl chloride foaming layer: weighing polyvinyl chloride: 72 parts, retanning fatliquor: 10 parts, filler: 9 parts by mass; subjecting the above components to hot melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating to a certain thickness, putting it into a foaming furnace for foaming;

[0067] Step 3, preparing an antistatic surface layer: weighing 72 parts of PVC resin, 11 parts of silicone, 21 parts of plasticizer, 6 parts of antistatic agent, and 3 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then applying the paste by roller to the upper surface of the antistatic surface layer obtained in step 2;

[0068] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0069] Step 5: Hang to dry;

[0070] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0071] Example 6

[0072] A method for preparing an antistatic thermoplastic elastomer artificial leather, wherein the method comprises the following steps:

[0073] Step 1, cleaning the base fabric and drying it, wherein the base fabric layer is a non-woven fabric;

[0074] Step 2, preparing a polyvinyl chloride foaming layer: weighing polyvinyl chloride: 78 parts, retanning fatliquor: 12 parts, filler: 8 parts by mass; subjecting the above components to hot melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming;

[0075] Step 3, preparing an antistatic surface layer: weighing 78 parts of PVC resin, 14 parts of silicone, 23 parts of plasticizer, 8 parts of antistatic agent, and 4 parts of conductive carbon black (the mass ratio of the antistatic agent to the conductive carbon black is 2:1) by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then applying the paste by roller on the upper surface of the antistatic surface layer obtained in step 2;

[0076] Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer;

[0077] Step 5: Hang to dry;

[0078] Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.

[0079] The performance of the products prepared in the above examples was tested, and the results are shown in Table 1 below:

[0080] Table 1

[0081] Surface resistivity(Ω) Tensile strength(MPa) Example 1 <![CDATA[5*10 8 ]]> 32 Example 2 <![CDATA[5.5*10 8 ]]> 30 Example 3 <![CDATA[5.9*10 8 ]]> 27 Example 4 <![CDATA[6*10 8 ]]> 28 Example 5 <![CDATA[7*10 8 ]]> 29 Example 6 <![CDATA[6.5*10 8 ]]> 26

[0082] 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. An antistatic thermoplastic elastomer artificial leather, characterized in that: The artificial leather comprises a base fabric layer, an intermediate foaming layer and a surface layer in sequence; the intermediate foaming layer is a polyvinyl chloride foaming layer, and the surface layer is an antistatic surface layer; The polyvinyl chloride foam layer is prepared from the following components in parts by mass: Polyvinyl chloride: 70~80 parts; Retanning fatliquor: 10-12 parts; Filler: 8~10 parts; The antistatic surface layer is prepared from the following components in parts by mass: PVC resin: 70~80 parts; Silicone: 10~15 parts; Plasticizer: 20~30 parts; Antistatic agent: 6~8 parts; Conductive carbon black: 3~4 parts.

2. The antistatic thermoplastic elastomer artificial leather according to claim 1, characterized in that: The filler in the polyvinyl chloride foaming layer is a soft fiber filler.

3. The antistatic thermoplastic elastomer artificial leather according to claim 1, characterized in that: Elastic fibers are arranged between the base fabric layer and the middle foaming layer; and elastic fibers are arranged between the middle foaming layer and the surface layer.

4. The antistatic thermoplastic elastomer artificial leather according to claim 1, characterized in that: The mass ratio of the antistatic agent to the conductive carbon black is 2:

1.

5. The antistatic thermoplastic elastomer artificial leather according to claim 1, characterized in that: The bottom fabric layer is non-woven fabric.

6. A method for preparing an antistatic thermoplastic elastomer artificial leather, characterized in that: The steps of the method are as follows: Step 1: Clean the base fabric and dry it; Step 2, preparing a polyvinyl chloride foaming layer: weighing polyvinyl chloride: 70-80 parts, retanning fatliquor: 10-12 parts, filler: 8-10 parts according to mass; subjecting the above components to hot melt treatment, stirring evenly, and preparing into a paste after treatment; then coating the paste mixture on the base fabric, and after coating a certain thickness, putting it into a foaming furnace for foaming; Step 3, preparing an antistatic surface layer: weighing 70-80 parts of PVC resin, 10-15 parts of silicone, 20-30 parts of plasticizer, 6-8 parts of antistatic agent, and 3-4 parts of conductive carbon black by weight, performing hot melt treatment, stirring evenly, and preparing into a paste after treatment; then roller-coating the paste on the upper surface of the antistatic surface layer obtained in step 2; Before step 4, step 2 and step 3, elastic fibers are arranged between the base fabric layer and the middle foaming layer; elastic fibers are arranged between the middle foaming layer and the surface layer; Step 5: Hang to dry; Step 6: After hanging to dry, the initially bonded bottom fabric layer, the middle foaming layer and the surface layer are subjected to hot pressing bonding, pulling, stretching and rolling to prepare the antistatic thermoplastic elastomer artificial leather.