阅读说明：本技术 一种抗菌pvc人造革及其制备方法 (Antibacterial PVC artificial leather and preparation method thereof ) 是由 孙晓斌 于 2021-08-12 设计创作，主要内容包括：本发明提供一种抗菌PVC人造革,包括里布层、PVC泡层、抗菌PVC层和表面层,并采用涂布的方法制备而得；其抗菌PVC层包括PVC粉糊树脂、生物基增塑剂、钙锌稳定剂、抗氧剂和抗菌剂；其表面层包括表面处理剂、消泡剂、手感剂、交联剂和抗菌剂,抗菌剂为银离子抗菌剂或锌离子抗菌剂或铜离子抗菌剂；本发明通过多层复配抗菌剂能够得到持续有效的抗菌效果；且里布层选自天然纤维、再生纤维或者合成纤维为基材面料,通过浸渍、涂层等对基材面料进行功能添加,将银离子抗菌剂修饰到里布面料中,使里布层具有抗菌效果；从而实现多层结构的抗菌效果,有效延长抗菌时间。(The invention provides an antibacterial PVC artificial leather, which comprises a lining layer, a PVC foam layer, an antibacterial PVC layer and a surface layer, and is prepared by a coating method; the antibacterial PVC layer comprises PVC powder paste resin, a bio-based plasticizer, a calcium-zinc stabilizer, an antioxidant and an antibacterial agent; the surface layer comprises a surface treating agent, a defoaming agent, a hand feeling agent, a cross-linking agent and an antibacterial agent, wherein the antibacterial agent is a silver ion antibacterial agent or a zinc ion antibacterial agent or a copper ion antibacterial agent; the invention can obtain continuous and effective antibacterial effect through the multilayer compound antibacterial agent; the lining layer is made of natural fibers, regenerated fibers or synthetic fibers, the base fabric is added with functions through dipping, coating and the like, and the silver ion antibacterial agent is modified into the lining fabric, so that the lining layer has an antibacterial effect; thereby realizing the antibacterial effect of a multilayer structure and effectively prolonging the antibacterial time.)

1. The utility model provides an antibiotic PVC synthetic leather, includes lining layer, PVC bubble layer, antibiotic PVC layer and superficial layer, its characterized in that: the antibacterial PVC layer is composed of the following components in parts by weight: 40-80 parts of PVC paste resin, 35-75 parts of plasticizer, 1-4 parts of stabilizer, 0.5-3 parts of antioxidant and 1-10 parts of antibacterial agent.

2. The antibacterial PVC artificial leather according to claim 1, wherein: the surface layer consists of the following components in parts by weight: 80-130 parts of surface treatment main agent, 0.5-1.5 parts of defoaming agent, 0.1-1 part of hand feeling auxiliary agent, 2-10 parts of cross-linking agent and 0.3-2 parts of antibacterial agent.

3. The antibacterial PVC artificial leather according to claim 1, wherein: the lining layer is made of natural fibers, regenerated fibers or synthetic fibers serving as base material fabrics, and the antibacterial agent is added into the base material fabrics.

4. The antibacterial PVC artificial leather according to claim 3, wherein: the antibacterial agent is a silver ion antibacterial agent, a zinc ion antibacterial agent or a copper ion antibacterial agent; the antibacterial agent is an inorganic metal ion type antibacterial agent obtained by loading silver ions, zinc ions or copper ions on nano-scale glass beads; the antibacterial agent is a novel composite antibacterial agent which is formed by loading silver ions on submicron cubic zirconium phosphate and compounding zinc ions or copper ions coated by quaternary ammonium modified chitosan.

5. The antibacterial PVC artificial leather according to claim 4, wherein: 5-20% of the silver ion active ingredient and 30-60% of the zinc ion or copper ion active ingredient; the antibacterial agent has a particle size distribution D50 of 0.5-1.2 μm and a particle size distribution D90 of 0.7-1.5 μm.

6. The antibacterial PVC artificial leather according to claim 1, wherein: the PVC foam layer comprises the following components in parts by weight: 20-80 parts of azodicarbonamide, 20-80 parts of auxiliary foaming agent, 1-20 parts of activating agent, 0.2-10 parts of dispersing agent and 0.2-5 parts of processing aid.

7. The antibacterial PVC artificial leather according to claim 1, wherein: the polymerization degree of the PVC paste resin is 1300-1600, and the K value is 71-76; the plasticizer is selected from one or the combination of more than two of phthalate, epoxy plasticizer and bio-based plasticizer; the stabilizer is one or the combination of more than two of metal soap, calcium zinc, organic tin, epoxy compound and rare earth stabilizer.

8. The method for preparing antibacterial PVC artificial leather according to any one of claims 1 to 7, which is characterized by comprising the following steps:

s1 manufacturing an antibacterial base blank, namely selecting special PVC high-temperature textured release paper, preparing the antibacterial base blank on the release paper by adopting a coating method, and then performing wet bonding on the inner cloth layer and the antibacterial base blank to obtain a textured antibacterial semi-finished product; the antibacterial bottom blank comprises an antibacterial PVC layer and a surface layer, the processing speed is 10-20m/min, and the processing temperature is 140-200 ℃;

s2 manufacturing an adhesion layer, performing surface treatment on the antibacterial semi-finished product obtained in the step S1 on a two-roller printing coating table, transferring antibacterial surface treatment liquid onto the antibacterial semi-finished product to form the surface layer, wherein the processing speed of the surface layer is 10-18m/min, and the processing temperature is 100-150 ℃, so that the finished antibacterial PVC artificial leather is obtained.

9. The method for preparing antibacterial PVC artificial leather according to claim 8, wherein: the preparation method of the solution of the antibacterial PVC layer in the step S1 comprises the following steps: s11: stirring PVC powder paste resin, a bio-based plasticizer, a calcium-zinc stabilizer and an antioxidant in a stirring barrel for 30-40min at a stirring speed of 300 +/-100 rpm and a viscosity controlled within the range of 5000 +/-500 cps; s12: stirring to a uniform state, adding the surface layer composite antibacterial agent, and continuously stirring for 20-30min at a stirring speed of 200 +/-100 rpm; s13: grinding the feed liquid added with the antibacterial agent, wherein the fineness is controlled to be less than or equal to 30 mu m; s14: carrying out defoaming treatment on the feed liquid, wherein the defoaming time is 30 +/-5 min, the defoaming negative pressure is more than or equal to-90 Kpa, and the stirring speed is 150 +/-50 rpm; and obtaining the antibacterial PVC layer solution.

10. The method for preparing antibacterial PVC artificial leather according to claim 8, wherein: the preparation method of the antibacterial surface treatment liquid in the step S2 comprises the following steps: s21: stirring the surface treating agent, the defoaming agent, the hand feeling agent and the cross-linking agent in a stirring barrel for 30-40min at a stirring speed of 200 +/-10 rpm and with a viscosity controlled within 500 +/-100 cps; s22: stirring the feed liquid to a uniform state, adding the glass microsphere antibacterial agent, and continuously stirring for 30-40min at the stirring speed of 200 +/-10 rpm; s23: and filtering the feed liquid by using a 200-mesh filter screen to finally obtain the uniform antibacterial surface treatment liquid.

Technical Field

The invention relates to the technical field of polyvinyl chloride material modification preparation, in particular to antibacterial PVC artificial leather and a preparation method of the antibacterial PVC artificial leather.

Background

With the development of social economy and the improvement of living standard, automobiles enter common families, and the functions of the automobiles exceed the level of simple transportation tools, so that the automobiles gradually become an important extension of living spaces of people. The automobile interior seat leather is used as a surface skin material of the automobile interior, is a material with the largest contact opportunity and the largest contact area for drivers and passengers, and is also an important factor influencing the environmental health and safety of the automobile interior. The industrial production of polyvinyl chloride (PVC) opens up new raw material resources for artificial leather and promotes the development of artificial leather production. Although the air permeability and moisture permeability are not as good as natural leather, the leather has certain strength and wear resistance, is particularly simple and convenient to produce, rich in raw materials, uniform in product quality, convenient to cut and use, light in weight, water-resistant and low in cost, and is widely used for manufacturing clothes, shoes, hats, bags, furniture, ornaments and various industrial accessories. With the development of plastic varieties and processing technologies, artificial leather forms a variety of series products.

In the real society, the contact with microbes such as bacteria and fungi is not completely avoided, and because the microbes have rapid reproduction capability and diversified propagation ways, antibacterial and antiviral materials capable of effectively resisting the invasion of pathogenic microbes and viruses are increasingly paid attention to by people, and healthy, safe, green and environment-friendly high-quality products are provided for consumers. In the existing scheme, the PVC artificial leather adopts a single type of antibacterial mildew preventive, the continuous antibacterial mildew preventive effect is not ideal, and a solvent type surface treating agent is used, so that the PVC artificial leather does not belong to an environment-friendly product; a large amount of mildew preventive is used in the preparation, so that the material cost is increased, and the addition of the mildew preventive on the other hand has adverse effects on other physical and chemical properties of the PVC synthetic leather; therefore, the invention provides an antibacterial PVC artificial leather and a preparation method thereof.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides antibacterial PVC artificial leather which comprises a lining layer, a PVC foam layer, an antibacterial PVC layer and a surface layer, and an antibacterial agent is added into the antibacterial artificial leather by a coating method, so that the antibacterial effect of a multi-layer structure is realized, and the antibacterial time is effectively prolonged.

In order to achieve the above object, the present invention provides an antibacterial PVC artificial leather, comprising a lining layer, a PVC foam layer, an antibacterial PVC layer and a surface layer; the PVC foam layer comprises the following components in parts by weight: 20-80 parts of azodicarbonamide, 20-80 parts of auxiliary foaming agent, 1-20 parts of activating agent, 0.2-10 parts of dispersing agent and 0.2-5 parts of processing aid.

The antibacterial PVC layer is composed of the following components in parts by weight: 40-80 parts of PVC paste resin, 35-75 parts of plasticizer, 1-4 parts of stabilizer, 0.5-3 parts of antioxidant and 1-10 parts of antibacterial agent.

The polymerization degree of the PVC paste resin is 1300-1600, and the K value is 71-76; the plasticizer is selected from one or the combination of more than two of phthalate, epoxy plasticizer and bio-based plasticizer; the stabilizer is one or the combination of more than two of metal soap, calcium and zinc, organic tin, epoxy compound and rare earth stabilizer.

The surface layer consists of the following components in parts by weight: 80-130 parts of surface treatment main agent, 0.5-1.5 parts of defoaming agent, 0.1-1 part of hand feeling auxiliary agent, 2-10 parts of cross-linking agent and 0.3-2 parts of antibacterial agent.

The lining layer is made of natural fibers, regenerated fibers or synthetic fibers serving as a base material fabric, and an antibacterial agent is added into the base material fabric to obtain an antibacterial lining layer and endow the antibacterial lining layer with an antibacterial function; the antibacterial agent is a silver ion antibacterial agent or a zinc ion antibacterial agent or a copper ion antibacterial agent.

The antibacterial agent is an inorganic metal ion type antibacterial agent obtained by loading silver ions, zinc ions or copper ions on nano-scale glass beads; the antibacterial agent is a novel composite antibacterial agent which is formed by compounding zinc ions or copper ions coated by chitosan modified by quaternary ammonium after silver ions are loaded on submicron cubic zirconium phosphate.

5-20% of the effective component of silver ions and 30-60% of the effective component of zinc ions or copper ions of the antibacterial agent; the antibacterial agent has a particle size distribution D50 (particle size distribution percentage of 50%) of 0.5-1.2 μm and a particle size distribution D90 (particle size distribution percentage of 90%) of 0.7-1.5 μm.

The quaternary ammonium modification of the chitosan is to introduce quaternary ammonium groups with different carbon numbers on a chitosan molecular skeleton, keep the pH value at 6-8 and coat zinc ions or copper ions in an alkaline aqueous solution.

The antibacterial performance of the PVC artificial leather is further improved by adding a certain amount of antibacterial agent in the lining layer, the antibacterial PVC layer and the surface layer.

In order to achieve the above objects, the present invention also provides a method for preparing the antibacterial PVC artificial leather, the method comprising the steps of:

s1 manufacturing an antibacterial base blank, namely selecting special PVC high-temperature textured release paper, preparing the antibacterial base blank on the release paper by a coating method, and wet-laminating the inner cloth layer and the antibacterial base blank to obtain a textured antibacterial semi-finished product; the antibacterial bottom blank comprises an antibacterial PVC layer and a surface layer, the processing speed is 10-20m/min, and the processing temperature is 140-200 ℃;

s2 manufacturing an adhesion layer, performing surface treatment on the antibacterial semi-finished product obtained in the step S1 on a two-roller printing coating table, transferring antibacterial surface treatment liquid onto the antibacterial semi-finished product to form the surface layer, wherein the processing speed of the surface layer is 10-18m/min, and the processing temperature is 100-150 ℃, so that the finished antibacterial PVC artificial leather is obtained.

Further, the lining layer processing method in step S1 includes: and performing pre-soaking treatment on the base material fabric, wherein the soaking liquid contains a silver ion or copper ion antibacterial agent with the concentration of 5-10%, and the soaking time of the lining layer is controlled within 30 +/-5 min.

Step S1, the solution preparation method of the antibacterial PVC layer comprises the following steps: s11: stirring PVC powder paste resin, bio-based plasticizer, calcium-zinc stabilizer and antioxidant in a stirring barrel for 30-40min at the stirring speed of 300 +/-100 rpm and the viscosity of 5000 +/-500 cps. S12: stirring to uniform state, adding the surface layer composite antibacterial agent, and stirring for 20-30min at stirring speed of 200 + -100 rpm. S13: grinding the feed liquid added with the antibacterial agent, wherein the fineness is controlled to be less than or equal to 30 mu m. S14: carrying out defoaming treatment on the feed liquid, wherein the defoaming time is 30 +/-5 min, the defoaming negative pressure is more than or equal to-90 Kpa, and the stirring speed is 150 +/-50 rpm; and obtaining the antibacterial PVC layer solution.

Step S1, the processing method of the antibacterial PVC layer comprises the following steps: processing on a PVC coating line, wherein the processing speed is set to be 14-18m/min, and the processing temperature is set to be within the range of 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial semi-finished product with the texture.

The preparation method of the antibacterial surface treatment liquid in the step S2 comprises the following steps: s21: stirring the surface treating agent, the defoaming agent, the hand feeling agent and the cross-linking agent in a stirring barrel for 30-40min at a stirring speed of 200 +/-10 rpm and a viscosity of 500 +/-100 cps or less. S22: stirring the feed liquid to a uniform state, adding the glass microsphere antibacterial agent, and continuously stirring for 30-40min at the stirring speed of 200 +/-10 rpm. S23: and filtering the feed liquid by using a 200-mesh filter screen to finally obtain the uniform antibacterial surface treatment liquid.

Step S2 the surface layer processing method: and (3) carrying out surface treatment on the antibacterial semi-finished product on a PVC two-roller printing and coating table, wherein the processing speed is 12-16m/min, the processing temperature is set at 100-130 ℃, a 150-mesh or 120-mesh silk-mesh wheel is adopted in the first printing and coating table, a 120-mesh or 100-mesh silk-mesh wheel is adopted in the second printing and coating table, and drying is carried out to obtain the antibacterial PVC artificial leather.

Compared with the prior art, the invention has the following beneficial effects:

1. the antibacterial PVC artificial leather for the automotive interior has triple antibacterial structural design, and comprises a lining layer, an antibacterial PVC layer and a surface layer. The common fabric is added with functions of dipping, coating and the like, and the silver ion antibacterial agent is modified into the lining fabric, so that the lining antibacterial effect is realized; the novel composite antibacterial agent is added into the antibacterial PVC layer, namely, the composite antibacterial agent is formed by compounding zinc ions or copper ions coated by quaternary ammonium modified chitosan, wherein silver ions are loaded on submicron cubic zirconium phosphate. The antibacterial activity of the quaternized chitosan is remarkably increased, the chitosan derivative has the best antibacterial effect, the antibacterial activity is enhanced along with the increase of positive charges, and the chitosan derivative can obtain a continuous and effective antibacterial effect through the multilayer compound antibacterial agent of silver ions.

2. The antibacterial bottom blank is prepared by adopting a coating process method, and a proper amount of bio-based antibacterial microcapsules are added on the surface layer of the PVC, so that the antibacterial bottom blank has good compatibility with a PVC prescription system, and the antibacterial effect can be improved and the antibacterial time can be prolonged by virtue of a microcapsule structure. The surface layer is added with silver ion, zinc ion or copper ion antibacterial agent coated by nano glass beads, so that the antibacterial agent can be better dispersed in the surface treatment liquid and can continuously and slowly release antibacterial active ingredients. The PVC lining is pretreated, and before being attached to the PVC leather, the PVC lining is firstly subjected to antibacterial and antiviral treatment, so that the PVC lining is endowed with an antibacterial function. The lining layer is made of natural fibers, regenerated fibers or synthetic fibers, the base fabric is added with functions through dipping, coating and the like, and the silver ion antibacterial agent is modified into the lining fabric, so that the lining layer has an antibacterial effect; thereby realizing the antibacterial effect of a multilayer structure and effectively prolonging the antibacterial time.

3. In the subsequent surface treatment process, two roller coating printing steps are carried out, a compound antibacterial agent is added into the surface layer, and a water system surface treatment agent is used, so that the environment-friendly property of the antibacterial PVC artificial leather is improved. Adopt the coating process method to prepare antibiotic PVC synthetic leather base embryo simultaneously, adopt special high temperature of PVC to take the texture from type paper processing, the half-finished product of LAM who processes just has the texture that the customer wanted, need not to carry out the knurling technology, has saved a process on the one hand, reduce cost, and on the other hand has reduced one shot forming process, reduces the influence to antibiotic agent active ingredient in the PVC synthetic leather.

Drawings

FIG. 1 is a schematic cross-sectional view of an antibacterial PVC artificial leather of the present invention;

the labels in the figure are: 1-surface layer, 2-antibacterial PVC layer, 3-PVC foam layer and 4-lining cloth layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be understood that the following examples are intended to further illustrate the present invention and should not be construed as limiting the scope of the present invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing description are intended to be covered by the present invention. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.

The invention provides an antibacterial PVC artificial leather (shown in figure 1), which comprises a lining layer 4, a PVC foam layer 3, an antibacterial PVC layer 2 and a surface layer 1; the PVC foam layer comprises the following components in parts by weight: 20-80 parts of azodicarbonamide, 20-80 parts of auxiliary foaming agent, 1-20 parts of activating agent, 0.2-10 parts of dispersing agent and 0.2-5 parts of processing aid; the antibacterial PVC layer consists of the following components in parts by weight: 40-80 parts of PVC paste resin, 35-75 parts of plasticizer, 1-4 parts of stabilizer, 0.5-3 parts of antioxidant and 1-10 parts of antibacterial agent; the surface layer consists of the following components in parts by weight: 80-130 parts of surface treatment main agent, 0.5-1.5 parts of defoaming agent, 0.1-1 part of hand feeling auxiliary agent, 2-10 parts of cross-linking agent and 0.3-2 parts of antibacterial agent.

The polymerization degree of the PVC paste resin is 1300-1600, and the K value is 71-76; the plasticizer is selected from one or the combination of more than two of phthalate, epoxy plasticizer and bio-based plasticizer; the stabilizer is one or more of metal soap, calcium zinc, organic tin, epoxy compound and rare earth stabilizer.

The lining layer is made of natural fibers, regenerated fibers or synthetic fibers serving as a base material fabric, and an antibacterial agent is added into the base material fabric to obtain an antibacterial lining layer; the antibacterial agent is silver ion antibacterial agent or zinc ion antibacterial agent or copper ion antibacterial agent; the antibacterial agent is an inorganic metal ion type antibacterial agent obtained by loading silver ions, zinc ions or copper ions on the nano-scale glass beads; the antibacterial agent is a novel composite antibacterial agent which is formed by loading silver ions on submicron cubic zirconium phosphate and compounding zinc ions or copper ions coated by quaternary ammonium modified chitosan; 5-20% of silver ion active ingredient and 30-60% of zinc ion or copper ion active ingredient of the antibacterial agent; the antibacterial agent has a particle size distribution D50 (particle size distribution percentage of 50%) of 0.5-1.2 μm and a particle size distribution D90 (particle size distribution percentage of 90%) of 0.7-1.5 μm; the quaternization modification of the chitosan is to introduce quaternary ammonium groups with different carbon numbers on a chitosan molecular skeleton, keep the pH value at 6-8 and coat zinc ions or copper ions in an alkaline aqueous solution.

The antibacterial performance of the PVC artificial leather is further improved by adding a certain amount of antibacterial agent in the inner cloth layer, the antibacterial PVC layer and the surface layer.

The invention also provides a preparation method of the antibacterial PVC artificial leather, which adopts a coating method to prepare and comprises the following steps:

s1 manufacturing an antibacterial base blank, namely selecting special PVC high-temperature textured release paper, preparing the antibacterial base blank on the release paper by a coating method, and wet-laminating a lining layer and the antibacterial base blank to obtain a textured antibacterial semi-finished product; the antibacterial bottom blank comprises an antibacterial PVC layer and a surface layer, the processing speed is 10-20m/min, and the processing temperature is 140-;

step S1, a cloth layer processing method: pre-soaking the base material fabric, wherein the soaking liquid contains 5-10% of silver ion or copper ion antibacterial agent, and the soaking time of the lining layer is controlled within 30 +/-5 min.

Step S1 method for preparing solution of antibacterial PVC layer: s11: stirring PVC powder paste resin, bio-based plasticizer, calcium-zinc stabilizer and antioxidant in a stirring barrel for 30-40min at the stirring speed of 300 +/-100 rpm and the viscosity of 5000 +/-500 cps. S12: stirring to uniform state, adding the surface layer composite antibacterial agent, and continuously stirring for 20-30min at stirring speed of 200 + -100 rpm. S13: grinding the feed liquid added with the antibacterial agent, wherein the fineness is controlled to be less than or equal to 30 mu m. S14: carrying out defoaming treatment on the feed liquid, wherein the defoaming time is 30 +/-5 min, the defoaming negative pressure is more than or equal to-90 Kpa, and the stirring speed is 150 +/-50 rpm; and obtaining the antibacterial PVC layer solution.

Step S1 processing method of antibacterial PVC layer: the processing speed is set to be 14-18m/min and the processing temperature is set to be 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial semi-finished product with the texture.

S2 manufacturing an adhesive layer, carrying out surface treatment on the antibacterial semi-finished product obtained in the step S1 on a two-roller printing coating table, transferring the antibacterial surface treatment liquid onto the antibacterial semi-finished product to form a surface layer, wherein the processing speed of the surface layer is 10-18m/min, the processing temperature is 100 ℃ and 150 ℃, and the finished antibacterial PVC artificial leather is obtained.

Step S2 preparation method of antibacterial surface treatment liquid: s21: stirring the surface treating agent, the defoaming agent, the hand feeling agent, the cross-linking agent and the like in a stirring barrel for 30-40min at a stirring speed of 200 +/-10 rpm and with the viscosity controlled within 500 +/-100 cps. S22: stirring the feed liquid to a uniform state, adding the glass microsphere antibacterial agent, and continuously stirring for 30-40min at the stirring speed of 200 +/-10 rpm. S23: and filtering the feed liquid by using a 200-mesh filter screen to finally obtain the uniform antibacterial surface treatment liquid.

Step S2 surface layer processing method: and (3) carrying out surface treatment on the antibacterial semi-finished product on a PVC two-roller printing and coating table, wherein the processing speed is 12-16m/min, the processing temperature is set at 100-130 ℃, a 150 or 120-mesh silk-mesh wheel is adopted in the first printing and coating table, a 120 or 100-mesh silk-mesh wheel is adopted in the second printing and coating table, and drying is carried out to obtain the antibacterial PVC artificial leather.

Example 1:

the preparation method of the antibacterial PVC artificial leather comprises the following steps: the antibacterial PVC layer is prepared from the following raw materials in parts by weight: 50 parts of PVC paste resin, 40 parts of bio-based plasticizer, 3 parts of calcium-zinc stabilizer, 0.5 part of antioxidant and 1 part of antibacterial agent; the preparation raw materials of the surface layer comprise 100 parts of surface treatment main agent, 0.5 part of defoaming agent, 1 part of hand feeling auxiliary agent, 5 parts of cross-linking agent and 1 part of antibacterial agent.

The preparation method of the antibacterial PVC artificial leather comprises the following steps: premixing the preparation raw materials of the antibacterial PVC layer according to parts by weight, pouring the mixture into a PVC coating machine for processing, wherein the processing speed is set to be 16m/min, and the processing temperature is set within a range of 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial PVC artificial leather semi-finished product with textures. And (3) conveying the semi-finished product to a coating table of a two-roll printing machine for surface treatment, transferring the antibacterial surface treatment liquid to the surface of the PVC artificial leather semi-finished product, setting the processing speed to be 15m/min and the temperature setting range to be 100-120 ℃, drying, finally forming the antibacterial PVC artificial leather, and performing performance detection, wherein the results are shown in Table 1.

Example 2:

the antibacterial PVC artificial leather is prepared as follows: the antibacterial PVC layer is prepared from the following raw materials in parts by weight: 60 parts of PVC paste resin, 30 parts of bio-based plasticizer, 3 parts of calcium-zinc stabilizer, 0.5 part of antioxidant and 1 part of antibacterial agent; the raw materials for preparing the surface layer comprise 100 parts of surface treatment main agent, 0.5 part of defoaming agent, 1 part of hand feeling auxiliary agent, 5 parts of cross-linking agent and 1 part of antibacterial agent.

The preparation method of the antibacterial PVC artificial leather comprises the following steps: premixing the preparation raw materials of the antibacterial PVC layer according to parts by weight, pouring the mixture into a PVC coating machine for processing, wherein the processing speed is set to be 16m/min, and the processing temperature is set within a range of 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial PVC artificial leather semi-finished product with textures. And (3) conveying the semi-finished product to a coating table of a two-roll printing machine for surface treatment, transferring the antibacterial surface treatment liquid to the surface of the PVC artificial leather semi-finished product, setting the processing speed to be 15m/min and the temperature setting range to be 100-120 ℃, drying, finally forming the antibacterial PVC artificial leather, and performing performance detection, wherein the results are shown in Table 1.

Example 3:

the antibacterial PVC artificial leather is prepared as follows: the antibacterial PVC layer is prepared from the following raw materials in parts by weight: 50 parts of PVC paste resin, 40 parts of bio-based plasticizer, 3 parts of calcium-zinc stabilizer, 0.5 part of antioxidant and 2 parts of antibacterial agent. The raw materials for preparing the surface layer comprise 100 parts of surface treatment main agent, 0.5 part of defoaming agent, 1 part of hand feeling auxiliary agent, 5 parts of cross-linking agent and 1 part of antibacterial agent.

The preparation method of the antibacterial PVC artificial leather comprises the following steps: premixing the preparation raw materials of the antibacterial PVC layer according to parts by weight, pouring the mixture into a PVC coating machine for processing, wherein the processing speed is set to be 16m/min, and the processing temperature is set within a range of 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial PVC artificial leather semi-finished product with textures. And (3) conveying the semi-finished product to a coating table of a two-roll printing machine for surface treatment, transferring the antibacterial surface treatment liquid to the surface of the PVC artificial leather semi-finished product, setting the processing speed to be 15m/min and the temperature setting range to be 100-120 ℃, drying, finally forming the antibacterial PVC artificial leather, and performing performance detection, wherein the results are shown in Table 1.

Example 4:

the antibacterial PVC artificial leather is prepared as follows: the antibacterial PVC layer is prepared from the following raw materials in parts by weight: 50 parts of PVC paste resin, 40 parts of bio-based plasticizer, 3 parts of calcium-zinc stabilizer, 0.5 part of antioxidant and 2 parts of antibacterial agent. The raw materials for preparing the surface layer comprise 100 parts of surface treatment main agent, 0.5 part of defoaming agent, 1 part of hand feeling auxiliary agent, 5 parts of cross-linking agent and 2 parts of antibacterial agent.

The preparation method of the antibacterial PVC artificial leather comprises the following steps: premixing the preparation raw materials of the antibacterial PVC layer according to parts by weight, pouring the mixture into a PVC coating machine for processing, wherein the processing speed is set to be 16m/min, and the processing temperature is set within a range of 150-. And (3) at the tail part of the coating machine, adhering the PVC antibacterial lining cloth to the PVC bottom blank in a wet adhering mode to obtain the antibacterial PVC artificial leather semi-finished product with textures. And (3) conveying the semi-finished product to a coating table of a two-roll printing machine for surface treatment, transferring the antibacterial surface treatment liquid to the surface of the PVC artificial leather semi-finished product, setting the processing speed to be 15m/min and the temperature setting range to be 100-120 ℃, drying, finally forming the antibacterial PVC artificial leather, and performing performance detection, wherein the results are shown in Table 1.

Comparative example:

the general (blank experiment, no added antibacterial agent) PVC artificial leather for the automotive interior was prepared as follows: the preparation raw materials of the common PVC layer comprise the following components in parts by weight: 50 parts of PVC paste resin, 40 parts of bio-based plasticizer, 3 parts of calcium-zinc stabilizer and 0.5 part of antioxidant. The preparation raw materials of the common surface layer comprise 100 parts of surface treatment main agent, 0.5 part of defoaming agent, 1 part of hand feeling auxiliary agent and 5 parts of cross-linking agent.

The preparation method of the antibacterial PVC artificial leather comprises the following steps: the preparation method comprises the steps of premixing the preparation raw materials of the common PVC layer according to the parts by weight, pouring the mixture into a PVC coating machine for processing, wherein the processing speed is set to be 16m/min, and the processing temperature is set within the range of 150-. And (3) at the tail part of the coating machine, adhering the PVC common lining cloth to the PVC bottom blank in a wet adhering mode to obtain the PVC artificial leather semi-finished product with textures. And (3) conveying the semi-finished product to a coating table of a two-roll printing machine for surface treatment, transferring the common surface treatment liquid to the surface of the PVC artificial leather semi-finished product, setting the processing speed to be 15m/min and the temperature setting range to be 100-120 ℃, drying, finally forming the common PVC artificial leather, and performing performance detection, wherein the results are shown in table 1.

Table 1 antibacterial PVC artificial leather performance test table

The antibacterial PVC artificial leather prepared by the method is subjected to performance detection, the test standard is in accordance with GB/T21866, and the antibacterial rate calculation formula is as follows: r ═ B-C)/BC × 100;

in the formula:

r-antibacterial rate (%);

b- -average recovered bacteria number after blank control sample plate for 24 hours;

c, recovering the average bacteria number of the antibacterial coating sample plate after 24 hours;

antibacterial durability (light resistance) test conditions: an ultraviolet lamp with the wavelength of 253.7nm, an antibacterial coating test plate is 0.8-1.0 m away from the ultraviolet lamp, and the irradiation is carried out for 100 hours.

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.