KR20230041150A - High-durability aritificial leather for automobile - Google Patents

Abstract

Provided is high-durability artificial leather for automobiles, which satisfies both cold-resistant properties and abrasion resistance. The high-durability artificial leather for automobiles according to the present invention comprises a fiber base layer and a cover layer disposed on the fiber base layer, wherein the cover layer includes a first polyvinyl chloride composite resin and an acrylic-silicone copolymer.

Description

High-durability artificial leather for automobile {HIGH-DURABILITY ARITIFICIAL LEATHER FOR AUTOMOBILE}

The present invention relates to highly durable artificial leather for automobiles, and more particularly, to highly durable artificial leather for automobiles capable of satisfying both cold resistance properties and abrasion resistance.

Leather commonly encountered in real life is classified into natural leather and artificial leather. Natural leather is derived from animals, has excellent texture and is highly preferred, but has disadvantages such as high price and limited production. Accordingly, artificial leather that is economical, has no restrictions on size and shape, is easy to wash, and is easy to dye is widely used throughout the industrial field.

In particular, in the field of automobiles, functional seats are in the limelight for comfortable and pleasant driving in the interior space of automobiles. Natural leather, polyvinyl chloride, and artificial leather such as polyurethane are widely used as materials for automobile seats. In particular, artificial leather using polyvinyl chloride resin as a base resin (hereinafter, referred to as PVC artificial leather) generally includes a foam layer and a cover layer.

In this PVC artificial leather, the foam layer and the cover layer each use polyvinyl chloride resin as a base resin, and when the content of the plasticizer is 60 parts by weight or less based on 100 parts by weight of the base resin, wear resistance is satisfied, but the cold resistance property is poor. There was, and when it was 70 parts by weight or more, it satisfied the cold resistance properties, but there was a problem with poor wear resistance. Therefore, until now, it has been difficult to realize artificial leather that satisfies both the abrasion resistance and cold resistance properties in a trade-off relationship according to the content of the plasticizer.

In order to solve the above problems, an object of the present invention is to satisfy both cold resistance properties and wear resistance by using a first polyvinyl chloride composite resin including a first polyvinyl chloride resin having a crosslinked high polymerization degree as a base resin of a cover layer To provide highly durable artificial leather for automobiles.

Another object of the present invention is to add an acrylic-silicone copolymer to the first polyvinyl chloride composite resin to improve compatibility with the first polyvinyl chloride composite resin and reduce the surface friction of the cover layer. It is to provide a highly durable artificial leather for automobiles with improved slip properties.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

High durability artificial leather for automobiles according to an embodiment of the present invention for achieving the above object includes a fiber base layer and a cover layer disposed on the fiber base layer, the cover layer comprising a first polyvinyl chloride composite resins and acrylic-silicone copolymers.

The fiber base layer is any one selected from the group consisting of nonwoven fabric, woven fabric, knitted fabric, PU impregnated fabric and PU impregnated knitted fabric.

The first polyvinyl chloride composite resin includes a first polyvinyl chloride resin having a polymerization degree of 2800 or more and a second polyvinyl chloride resin having a polymerization degree of 700 to 1700.

The first polyvinyl chloride resin is included in an amount of 10 to 60% by weight based on the total weight of the first polyvinyl chloride composite resin.

The acrylic-silicone copolymer is included in an amount of 1 to 30 parts by weight based on 100 parts by weight of the first polyvinyl chloride composite resin. The acrylic-silicone copolymer includes 60 to 80% by weight of a silicone unit and 20 to 40% by weight of an acrylic unit.

High durability artificial leather for automobiles according to another embodiment of the present invention for achieving the above object further includes a foam layer disposed between the fiber base layer and the cover layer.

According to one embodiment of the present invention, the foam layer includes a second polyvinyl chloride composite resin, and the second polyvinyl chloride composite resin has a polymerization degree of 2800 or more and a third polyvinyl chloride resin and a polymerization degree of 1000 to 1000 It includes a fourth polyvinyl chloride resin of 1300.

According to another embodiment of the present invention, the foam layer includes a fifth polyvinyl chloride resin having a polymerization degree of 1000 to 1300.

High durability artificial leather for automobiles according to another embodiment of the present invention for achieving the above object further includes a surface treatment layer disposed on the cover layer.

According to the present invention, it is possible to solve the problem that it is difficult to satisfy both cold resistance properties and abrasion resistance depending on the content of the plasticizer, and accordingly, artificial leather having high durability performance can be provided. In addition, according to the present invention, it is possible to provide artificial leather with improved compatibility with other resins and improved surface slip properties.

In addition to the above effects, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a cross-sectional view showing a highly durable artificial leather for automobiles according to an embodiment of the present invention.

Hereinafter, each configuration of the present invention will be described in more detail so that those skilled in the art can easily practice it, but this is only one example, and the scope of the present invention is Not limited.

High durability artificial leather for automobiles according to one aspect of the present invention includes a fiber base layer and a cover layer disposed on the fiber base layer, wherein the cover layer includes a first polyvinyl chloride composite resin and an acrylic-silicone co contains polymers.

Hereinafter, the configuration of the present invention will be described in more detail with reference to FIG. 1 .

1 is a cross-sectional view showing a highly durable artificial leather for automobiles according to an embodiment of the present invention.

Referring to FIG. 1 , the highly durable artificial leather 100 for automobiles according to the present invention includes a fiber base layer 10, a foam layer 20, a cover layer 30, and a surface treatment layer 40.

(1) fiber base layer (10)

The fiber base layer 10 according to the present invention may be any one selected from the group consisting of nonwoven fabric, woven fabric, knitted fabric, PU impregnated fabric, and PU impregnated knitted fabric. In this specification, 'PU impregnated fabric' is defined to mean a fabric impregnated with a polyurethane resin, and 'PU impregnated knitted fabric' is defined to mean a knitted fabric impregnated with a polyurethane resin. The knitted fabric can be divided into circular knitting and warp knitting.

The yarn constituting the fabric as described above may correspond to any one selected from the group consisting of natural fibers, synthetic fibers, regenerated fibers, and combinations thereof.

The natural fiber may correspond to any one selected from the group consisting of cotton fiber, hemp fiber, wool fiber, silk fiber, wool fiber, and combinations thereof.

The synthetic fibers may correspond to any one selected from the group consisting of polyester fibers, nylon fibers, polyolefin fibers, polyvinyl alcohol fibers, polyamide fibers, polyurethane fibers, polyvinylidene chloride fibers, and combinations thereof.

The regenerated fibers may be rayon fibers or cupra fibers.

According to one embodiment of the present invention, the thickness of the weft and warp yarns constituting the fabric may correspond to 75 to 150 Denier, preferably 75 to 120 Denier, and more preferably 75 to 100 Denier may correspond to

According to another embodiment of the present invention, the thickness of the yarn constituting the circular knitting may correspond to 100 to 150 Denier, preferably 110 to 150 Denier, and more preferably 120 to 150 Denier can The thickness of the yarn constituting the circular knit may have excellent strength within the above range.

The circular piece according to an embodiment of the present invention may be coated with the polyurethane resin on its surface. Impregnating and coating the circular piece with the polyurethane resin is to have shape retention that can withstand repeated stretching. Specifically, in order to implement the suitable circular piece, after impregnating the circular piece with an impregnation solution containing the polyurethane resin or its copolymer, coating the impregnated circular piece with a coating solution, solidifying it in a coagulation bath And it may be necessary to go through a water washing step to remove the organic solvent (eg, DMF) present in the circular piece.

The polyurethane resin (or impregnation solution) according to the present invention may be any one selected from the group consisting of polycarbonate-based polyurethane resins, polyester-based polyurethane resins, polyether-based polyurethane resins, and mixtures thereof.

The polyurethane resin can be prepared by reacting a polyol with a diisocyanate and a chain extender.

The diisocyanate is 4,4'-diphenylmethane diisocyanate (MDI), xylene diisocyanate (XDI), aromatic diisocyanate having a benzene ring such as 1,5-naphthalene diisocyanate, hexamethylene diisocyanate (HDI) A group consisting of aliphatic diisocyanates such as propylene diisocyanate and alicyclic diisocyanates such as 1,4-cyclohexane diisocyanate, isophorone diisocyanate (IPDI), and 4,4'-dicyclohexylmethane diisocyanate (H12MDI) It may be one or more selected from, preferably 4,4-diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI) and dicyclohexyl methane diisocyanate (H12MDI) It may be one or more selected from the group consisting of.

The chain extender may be one generally used in the technical field to which the present invention pertains, and preferably may be a low molecular weight diol compound or diamine compound having an even number of repeating units, which is advantageous for increasing crystallinity. The chain extender is preferably ethylene glycol (EG), diethylene glycol (DEG), propylene glycol (PG), 1,4-butanediol (1,4-BD), 1,6-hexanediol (1,6 -HD), methylpentanediol, and isophoronediamine (IPDA). The chain extender may be included in an amount of 1 to 15 parts by weight, preferably 2 to 10 parts by weight, based on 100 parts by weight of the polyol.

The polyurethane resin may be prepared by the reaction of a soft segment containing a hydroxyl group (-OH) at both ends and a hard segment containing an isocyanate group at both ends. there is.

Specifically, the polycarbonate-based polyurethane resin may correspond to a polyurethane resin using polycarbonate diol as a reactant as a soft segment, and the polyester-based polyurethane resin may correspond to a polyester die as a soft segment. It may correspond to a polyurethane resin using ol as a reactant, and the polyether-based polyurethane resin may correspond to a polyurethane resin using polyether diol as a reactant as a soft segment.

The fiber base layer 10 according to the present invention may further include additives. The additive is added to the polyurethane resin impregnated into the fabric, and may include 10 to 100 parts by weight based on 100 parts by weight of the polyurethane resin.

The additive according to the present invention may be any one selected from the group consisting of calcium carbonate, flame retardants, surfactants, toners, and combinations thereof. In particular, by using the calcium carbonate as a filler, it is possible to increase the tensile strength of the fabric, and by using the flame retardant, it is possible to slow down the progress of a combustion reaction when a vehicle catches fire. The flame retardant may be, for example, an inorganic flame retardant such as magnesium hydroxide or aluminum trihydrate.

The surfactant may be any one selected from the group consisting of anionic surfactants, nonionic surfactants, and mixtures thereof. However, the technical spirit of the present invention is not limited to the type of surfactant, and any surfactant usable in the technical field to which the present invention belongs may be used.

The fiber base layer 10 according to the present invention may include 10 to 50 parts by weight of the solvent based on 100 parts by weight of the polyurethane resin, preferably 10 to 30 parts by weight.

The solvent may preferably correspond to any one selected from the group consisting of dimethylformamide, methylethylketone, dimethylacetamide, N-methylpyrrolidone, dimethylsulfoxide, ethyl acetate, and mixtures thereof. However, the technical spirit of the present invention is not limited to the type of the solvent, and all solvents capable of dissolving the polyurethane resin may be used.

The thickness of the fiber base layer 10 according to the present invention may correspond to 7 to 14 mm (millimeter), preferably 7 to 12 mm (millimeter), more preferably 7 to 10 mm (millimeter). there is. When the thickness of the fiber base layer 10 is less than the above numerical range, durability of the artificial leather may be reduced, and when the thickness exceeds the above numerical range, cost may increase and moldability may be difficult to maintain.

The thickness of the fiber base layer 10 can be measured by the thickness of the cut section using a scanning electron microscope (SEM) after cutting the artificial leather vertically. As a specific example, the artificial leather is cut vertically. After cutting, a vertical line is drawn at five equally spaced points at the top of the fiber base layer, and the distances to the lower end of the fiber base layer meeting the vertical line are measured, respectively, and then the average value can be obtained.

(2) cover layer (30)

The cover layer 30 according to the present invention may be disposed on the fiber base layer 10. Specifically, the cover layer 30 may include a first polyvinyl chloride composite resin and an acrylic-silicone copolymer.

The first polyvinyl chloride composite resin according to the present invention may include a first polyvinyl chloride resin having a polymerization degree of 2800 or more and a second polyvinyl chloride resin having a polymerization degree of 700 to 1700. Specifically, the degree of polymerization of the first polyvinyl chloride resin may be 2800, and the degree of polymerization of the second polyvinyl chloride resin may be 1000 to 1300. In other words, the K-value of the first polyvinyl chloride resin may be 85 or more, and the K-value of the second polyvinyl chloride resin may be 65 to 75.

The first polyvinyl chloride resin may be included in an amount of 10 to 60% by weight, preferably 20 to 50% by weight, more preferably 30 to 40% by weight based on the total weight of the first polyvinyl chloride composite resin. % can be included. When the content of the first polyvinyl chloride resin is less than the above numerical range, the toughness of the artificial leather surface may be lowered, and when it exceeds the above numerical range, it may be difficult to satisfy both cold resistance properties and abrasion resistance.

Conventionally, when only a polyvinyl chloride resin having a degree of polymerization of 1000 to 1300 is used as a base resin of a cover layer, partial destruction occurs on the surface of artificial leather and cracks are formed, leading to total destruction. According to the present invention, by mixing the first polyvinyl chloride resin having a high degree of polymerization with the second polyvinyl chloride resin, it is possible to improve both cold resistance properties and abrasion resistance of artificial leather.

The acrylic-silicone copolymer according to the present invention may be included in an amount of 1 to 30 parts by weight, preferably 3 to 25 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the first polyvinyl chloride composite resin. may be included as a part. When the content of the acrylic-silicone copolymer is less than the above numerical range, surface slip properties of artificial leather may not be improved, and when it exceeds the above numerical range, the surface friction force of the cover layer is excessively reduced, resulting in a surface treatment layer. The step of coating the formation composition (or surface treatment agent) on the cover layer may not be easy.

The acrylic-silicone copolymer may include 60 to 80% by weight of the silicone unit and 20 to 40% by weight of the acrylic unit. The silicone unit can reduce surface friction of the cover layer, and the acrylic unit can improve compatibility with polyvinyl chloride resin.

Conventionally, since acrylic-silicone copolymer is not added to the polyvinyl chloride resin, which is the base resin of the cover layer, there is a problem in that the surface slip property of the cover layer is low. According to the present invention, by adding the acrylic-silicone copolymer to the first polyvinyl chloride composite resin, surface slip properties of the cover layer can be improved, thereby improving the marketability of artificial leather as a whole.

The thickness of the cover layer 30 according to the present invention may correspond to 0.1 to 1 mm, preferably 0.15 to 0.5 mm, and more preferably 0.2 to 0.4 mm.

(3) foam layer 20

The foam layer 20 according to the present invention is a member that imparts a three-dimensional or cushioning feel to high-durability artificial leather for automobiles, and may be manufactured by foaming a film molded from a composition for forming a foam layer.

Foam layer 20 according to the present invention may be disposed on the fiber base layer (10). Specifically, the foam layer 20 may be disposed between the fiber base layer 10 and the cover layer 30 .

The foam layer 20 according to an embodiment of the present invention may include a second polyvinyl chloride composite resin. The second polyvinyl chloride composite resin may include a third polyvinyl chloride resin having a polymerization degree of 2800 or more and a fourth polyvinyl chloride resin having a polymerization degree of 1000 to 1300. The second polyvinyl chloride composite resin may be the same as or different from the first polyvinyl chloride composite resin. The content of the third polyvinyl chloride resin may be 20 to 40% by weight, preferably 25 to 35% by weight based on the total weight of the second polyvinyl chloride composite resin, and the fourth polyvinyl chloride resin The content may be 60 to 80% by weight, preferably 65 to 75% by weight based on the total weight of the second polyvinyl chloride composite resin.

The foam layer 20 according to another embodiment of the present invention may include a fifth polyvinyl chloride resin having a polymerization degree of 1000 to 1300. The fifth polyvinyl chloride resin may be the same as or different from the fourth polyvinyl chloride resin.

However, the technical idea of the present invention is not limited to the degree of polymerization of the polyvinyl chloride resin and the use of the polyvinyl chloride resin alone or in combination.

The foaming agent according to the present invention, based on 100 parts by weight of the second polyvinyl chloride composite resin (or the fifth polyvinyl chloride resin), may be included in more than 0 and 15 or less parts by weight, preferably 1 to 10 parts by weight, and more It may preferably be included in 2 to 8 parts by weight. When the content of the foaming agent is less than the above numerical range, foam cells are not sufficiently formed, and thus the tactile feel or ductility of artificial leather may be lowered. Mechanical properties may not be satisfied.

The foaming agent according to the present invention may correspond to a capsule foaming agent or a chemical foaming agent, and preferably may correspond to a capsule foaming agent. The capsule foaming agent is in the form of a foaming agent contained in a fine spherical thermoplastic cell structure having a size of 1 to 1000 μm (micrometer). When the capsule foaming agent is heated, the thermoplastic plastic cell is softened, and the foaming agent contained therein is vaporized to increase internal pressure, thereby expanding the capsule and forming a foam layer.

As the blowing agent, azodicarbonamide (ADCA), p,p'-oxybisbenzenesulfonyl hydrazide (p,p'-oxybis(benzenesulfonyl hydrazide)), p-toluenesulfonyl hydrazide (p- toluenesulfonyl hydrazide) and sodium bicarbonate, etc. may be used, but the technical spirit of the present invention is not limited thereto.

The foam layer 20 according to another embodiment of the present invention may optionally further include any one selected from the group consisting of a flame retardant, calcium carbonate, wax, and combinations thereof.

The thickness of the foam layer 20 according to the present invention may correspond to 0.1 to 1 mm, preferably 0.15 to 0.8 mm, and more preferably 0.2 to 0.6 mm.

(4) surface treatment layer (40 )

The surface treatment layer 40 according to the present invention may be disposed on the cover layer 30, and specifically may be disposed directly on the cover layer 30. Therefore, the cover layer 30 may be disposed between the surface treatment layer 40 and the foam layer 20 .

The surface treatment layer 40 can improve functions such as light resistance, hydrolysis resistance, and chemical resistance of artificial leather. Specifically, the surface treatment layer 40 may be formed by coating a surface treatment agent on top of the cover layer 30 . The surface treatment agent may be classified as an aqueous surface treatment agent or an oil-based surface treatment agent according to the nature (aqueous or oily) of a solvent serving as a dispersion medium.

In particular, when the surface treatment layer is coated with a water-based surface treatment agent, odor and volatile organic compounds are reduced, so that eco-friendly artificial leather can be realized. For example, the aqueous surface treatment agent may include a polyurethane dispersion and carbodiimide as a two-component aqueous surface treatment agent.

The surface treatment layer 40 may preferably be formed by including a crosslinking agent and a silicone compound in a polyurethane resin, more preferably including a crosslinking agent, a reactive silicone compound, a polyolefin wax, and a polyurethane bead in a polyurethane resin. It may be formed, and in this case, there is a more excellent effect of sound absorption and luxury.

The content of the crosslinking agent is preferably 3 to 7 parts by weight, more preferably 4 to 6 parts by weight, and still more preferably 4 to 5 parts by weight based on 100 parts by weight of the polyurethane resin, which is the base resin of the surface treatment layer. , within this range, there is an effect of excellent sound absorption and luxury.

The crosslinking agent is not particularly limited when it is a crosslinking agent commonly used in the art to which the present invention pertains, but is preferably selected from compounds containing at least one selected from the group consisting of an aziridine group, an isocyanate group, and a carbodiimide group in a molecule. It can be, and in this case, there is an advantage of better sound absorption and luxury.

The content of the silicone compound is 5 to 20 parts by weight, more preferably 5 to 15 parts by weight, and still more preferably 8 to 10 parts by weight based on 100 parts by weight of the polyurethane resin, which is the base resin of the surface treatment layer, Within this range, there is an advantage in that the surface feel is excellent.

The silicone compound may be preferably polysiloxane, more preferably liquid polysiloxane at room temperature, bead-shaped polysiloxane, or a mixture thereof, and more preferably liquid polysiloxane at room temperature. In this case, there is an advantage of excellent surface feel.

The surface treatment layer 40 according to another embodiment of the present invention may have an embossed pattern engraved on its surface.

The surface treatment layer 40 according to the present invention may have a thickness of 0.001 to 0.01 mm (millimeter), preferably 0.001 to 0.008 mm (millimeter), more preferably 0.001 to 0.005 mm (millimeter). there is. When the thickness of the surface treatment layer 40 satisfies the above numerical range, abrasion resistance, light resistance, hydrolysis resistance and chemical resistance may be excellent while maintaining an appropriate cost.

According to the present invention, the fiber base layer and the foam layer may not be exposed when visually observed after 30,000 cycles at 30 rpm according to JIS 0849 standard using a Gakushin tester (model name: TF413).

The high-durability artificial leather for automobiles according to the present invention is ISO 5402-1 standard using a Bally Resistance Flexing Tester (model name: GTKC-10A) and has no surface cracks at -10 ° C and 30,000 cycles. it could be

Hereinafter, an embodiment of the present invention will be described in detail so that those skilled in the art can easily practice it, but this is only one example, and the scope of the present invention is Not limited.

[Preparation Example 1: Preparation of a composition for forming a cover layer and a cover layer]

As shown in Table 1 below, a cover layer (thickness: 0.25 mm) was prepared using a composition for forming a cover layer.

Unit: parts by weight Comparative preparation example 1-1 Comparative preparation example 1-2 Implementation Example 1-1 Implementation Example 1-2 Implementation Example 1-3 Implementation Example 1-4 Implementation Example 1-5 base resin First PVC resin ¹⁾ - 100 30 30 30 30 30 Second PVC resin ²⁾ 100 - 70 70 70 70 70 Acrylic-silicone copolymer ³⁾ - - One 5 10 20 30 plasticizer ⁴⁾ 70 70 70 70 70 70 70 flame retardant ⁵⁾ 3 3 3 3 3 3 3 1) Vinnolit® S 100
2) Second polyvinyl chloride resin having a degree of polymerization of 1200
3) CHALINE ^® R-170S
4) Diisodecyl phthalate
5) Al(OH) ₃

[Preparation Example 2: Preparation of a composition for forming a foam layer and a pre-foam layer]

As shown in Table 2 below, a pre-foaming layer was prepared using a composition for forming a foaming layer. The 'pre-foaming layer' is a sheet extruded with a composition for forming a foaming layer, and is a sheet that has not been subjected to a foaming process.

Unit: parts by weight Implementation Example 2-1 Implementation Example 2-2 base resin Third PVC resin ¹⁾ - 30 4th PVC resin ²⁾ 100 70 Foaming agent ³⁾ 5 5 plasticizer ⁴⁾ 70 70 flame retardant ⁵⁾ 3 3 1) Vinnolit® S 100
2) 4th polyvinyl chloride resin having a degree of polymerization of 1200
3) azodicarbonamide
4) Diisodecyl phthalate
5) Al(OH) ₃

[Manufacture Example 1: Manufacture of artificial leather]

Artificial leather was manufactured according to the following Comparative Examples and Examples.

<Comparative Example 1-1>

(1) preparing a pre-foamed layer according to Preparation Example 2-1, (2) the pre-foamed layer and a fiber base layer made of terry woven fabric woven with 35% (w/w) Rayon fiber Bonding step, (3) bonding the cover layer according to Comparative Preparation Example 1-1 with the laminated structure in which the pre-foam layer and the fiber base layer are bonded, (4) bonding the cover layer and the laminated structure Passing the structure through a foaming machine to foam it at 220 ° C. and (5) coating an aqueous surface treatment agent containing a water-based polyurethane resin (trade name: UT-66 from Unitech Industry Co., Ltd.) on the cover layer to form a surface treatment layer Through the forming step, artificial leather according to Comparative Example 1-1 was manufactured.

<Comparative Example 1-2>

Artificial leather was manufactured in the same manner as in Comparative Example 1-1, but a pre-foamed layer according to Preparation Example 2-2 was prepared instead of the pre-foamed layer according to Preparation Example 2-1.

<Comparative Example 2-1>

Artificial leather was manufactured in the same manner as in Comparative Example 1-1, but instead of the cover layer according to Comparative Preparation Example 1-1, a cover layer according to Comparative Preparation Example 1-2 was prepared.

<Comparative Example 2-2>

Artificial leather was manufactured in the same manner as in Comparative Example 2-1, but a pre-foamed layer according to Preparation Example 2-2 was prepared instead of the pre-foamed layer according to Preparation Example 2-1.

<Example 1-1>

Artificial leather was manufactured in the same manner as in Comparative Example 1-1, but instead of the cover layer according to Comparative Example 1-1, a cover layer according to Preparation Example 1-1 was prepared.

<Example 1-2>

Artificial leather was manufactured in the same manner as in Example 1-1, but a cover layer according to Preparation Example 1-2 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 1-3>

Artificial leather was manufactured in the same manner as in Example 1-1, but a cover layer according to Preparation Example 1-3 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 1-4>

Artificial leather was manufactured in the same manner as in Example 1-1, but a cover layer according to Preparation Example 1-4 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 1-5>

Artificial leather was manufactured in the same manner as in Example 1-1, but a cover layer according to Preparation Example 1-5 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 2-1>

Artificial leather was manufactured in the same manner as in Comparative Example 2-2, but instead of the cover layer according to Comparative Preparation Example 1-2, a cover layer according to Preparation Example 1-1 was prepared.

<Example 2-2>

Artificial leather was manufactured in the same manner as in Example 2-1, but instead of the cover layer according to Preparation Example 1-1, a cover layer according to Preparation Example 1-2 was prepared.

<Example 2-3>

Artificial leather was manufactured in the same manner as in Example 2-1, but a cover layer according to Preparation Example 1-3 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 2-4>

Artificial leather was manufactured in the same manner as in Example 2-1, but a cover layer according to Preparation Example 1-4 was prepared instead of the cover layer according to Preparation Example 1-1.

<Example 2-5>

Artificial leather was manufactured in the same manner as in Example 2-1, but a cover layer according to Preparation Example 1-5 was prepared instead of the cover layer according to Preparation Example 1-1.

[Experimental Example: Test of Cold Resistance and Abrasion Resistance of Artificial Leather]

The cold resistance properties and abrasion resistance of the artificial leather according to Preparation Example 1 were evaluated as follows.

1) Cold resistance properties

The cold resistance properties of the artificial leather according to Preparation Example 1 were evaluated according to the ISO 5402-1 standard using a Bally Resistance Flexing Tester (Model: GTKC-10A). Specifically, after mounting the artificial leather specimen according to Preparation Example 1 on the test jig, the temperature of the chamber was set to -10 ° C., and after 30,000 cycles, the appearance of the specimen was visually observed for cracks. When cracks occurred in the specimen, it was evaluated as 'unsuitable', and when cracks did not occur, it was evaluated as 'acceptable'.

2) Wear resistance

The abrasion resistance of the artificial leather specimen according to Preparation Example 1 was evaluated according to the JIS 0849 standard using a Gakushin tester (model name: TF413). The appearance of the artificial leather specimen according to Preparation Example 1 was visually observed after 30000 cycles at 30 rpm, and whether the artificial leather specimen was worn by friction was evaluated. If the specimen was worn by frictional motion (if the fiber base layer or foam layer was exposed), it was evaluated as 'unsuitable', and if it was not worn (if the fiber base layer and foam layer were not exposed), it was evaluated as 'suitable' evaluated.

sample cold resistance properties wear resistance Comparative Example 1-1 incongruity incongruity Comparative Example 1-2 fitness incongruity Comparative Example 2-1 incongruity incongruity Comparative Example 2-2 fitness incongruity Example 1-1 fitness fitness Example 1-2 fitness fitness Examples 1-3 fitness fitness Example 1-4 fitness fitness Example 1-5 fitness fitness Example 2-1 fitness fitness Example 2-2 fitness fitness Example 2-3 fitness fitness Example 2-4 fitness fitness Example 2-5 fitness fitness

As shown in Table 3, it can be seen that the embodiment satisfies both cold resistance properties and abrasion resistance compared to the comparative example, and accordingly, it can be seen that artificial leather suitable for automobile specifications can be implemented.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also present. It falls within the scope of the right of invention.

10: fiber base layer
20: foam layer
30: cover layer
40: surface treatment layer
100: High durability artificial leather for automobiles

Claims (12)

a fiber base layer; and
A cover layer disposed on the fiber base layer; including,
The cover layer is
A first polyvinyl chloride composite resin and
comprising an acrylic-silicone copolymer
High durability artificial leather for automobiles. According to claim 1,
The fiber base layer,
Any one selected from the group consisting of nonwoven fabric, fabric, knitted fabric, PU impregnated fabric and PU impregnated knitted fabric
High durability artificial leather for automobiles. According to claim 1,
The first polyvinyl chloride composite resin,
A first polyvinyl chloride resin having a degree of polymerization of 2800 or more; and
A second polyvinyl chloride resin having a degree of polymerization of 700 to 1700
High durability artificial leather for automobiles. According to claim 3,
The first polyvinyl chloride resin,
High durability artificial leather for automobiles contained in 10 to 60% by weight based on the total weight of the first polyvinyl chloride composite resin. According to claim 1,
The acrylic-silicone copolymer,
1 to 30 parts by weight based on 100 parts by weight of the first polyvinyl chloride composite resin
High durability artificial leather for automobiles. According to claim 1,
The acrylic-silicone copolymer,
A highly durable artificial leather for automobiles comprising 60 to 80% by weight of a silicone unit and 20 to 40% by weight of an acrylic unit. According to claim 1,
a foam layer disposed between the fiber base layer and the cover layer; further comprising
High durability artificial leather for automobiles. According to claim 7,
The foam layer,
Including a second polyvinyl chloride composite resin,
The second polyvinyl chloride composite resin,
A third polyvinyl chloride resin having a degree of polymerization of 2800 or more; and
A fourth polyvinyl chloride resin having a degree of polymerization of 1000 to 1300
High durability artificial leather for automobiles. According to claim 7,
The foam layer,
A fifth polyvinyl chloride resin having a degree of polymerization of 1000 to 1300
High durability artificial leather for automobiles. According to claim 7,
The fiber base layer and the foam layer are not exposed when visually observed after 30,000 cycles at 30 rpm in accordance with JIS 0849 standard using a Gakushin tester (model name: TF413),
High durability artificial leather for automobiles. According to claim 1,
a surface treatment layer disposed on the cover layer; further comprising
High durability artificial leather for automobiles. According to claim 1,
Using the Bally Resistance Flexing Tester (model name: GTKC-10A), ISO 5402-1 standard -10 ℃, no surface cracks at 30,000 cycles,
High durability artificial leather for automobiles.

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