KR19980014448A - High abrasion resistance synthetic leather composition and manufacturing method - Google Patents

Abstract

The present invention relates to a method for producing a synthetic leather composition which improves the physical properties, particularly abrasion resistance, of synthetic leather using various reinforcing agents such as silica-alumina ceramics. The present invention relates to a method for producing a synthetic leather composition comprising a polyurethane resin or a PVC resin A surfactant, a filler, a toner, and a solvent in an appropriate ratio, and then the mixture is impregnated, dry-coated or wet-coated, followed by post-processing to produce a product.

Description

High abrasion resistance synthetic leather composition and manufacturing method

In general, synthetic leather is produced by blending polyurethane resin or PVC resin, surfactant, filler, Toner and solvent in various ratios such as fabrics, nonwoven fabrics and knits in appropriate ratios, then impregnating them with dry coating or wet coating, , And then combines post-processing such as patterning, grinding, and creasing to produce a product.

Especially, when it is used as a base material for sports shoes such as soccer shoes, basketball shoes, etc., which require a moment of momentary stress, or a baseball glove, a vehicle seat or a sofa, it is required to have more enhanced physical properties. Is poor in abrasion resistance.

The present invention provides a synthetic leather composition having improved physical properties, particularly abrasion resistance, of synthetic leather using various reinforcing agents such as ceramics made of silica-alumina.

Figure 1 shows an example of a commonly used synthetic leather composition

FIG. 2 shows an example of a high abrasion resistance synthetic leather composition of the present invention

As shown in FIG. 1, the abrasion test is carried out by placing a predetermined weight of a grinding stone on a synthetic leather composition and rotating the grinding stone. As shown in FIG. 1, Or contact directly with the thin film layer to cause wear. The more abrasive materials there are, the more easily wear occurs. However, ~ 100 m As shown in FIG. 2, the ceramic particles, which serve as the reinforcing agent, function as a buffer with polyurethane, PVC, and the like, so that the abrasion resistance is greatly improved. The reinforcing agent used in the present invention has a particle size of 10 m ~ 100 m Silica-alumina ceramics and the like, the surface of the leather composition is uniformly applied to the surface of the leather composition, so that it is not caught in the filter net during the filtration process.

The production method according to the present invention is characterized in that a polyurethane or PVC is added in an amount of 2 to 30% by weight in a polyurethane or PVC polymerization process and a polyurethane or PVC is blended in an amount of 2 to 30% There is a way to mix and mix and filter thoroughly by adding appropriate amount of dispersant to prevent precipitation or floating of reinforcing agent due to difference in specific gravity. This compounding liquid is applied onto the fabric or release paper.

[Example 1]

Dry synthetic leather composition

1) Fabric: T / C Woven section air blower with weight of 350g / m2

2) Mixed liquid

Polyurethane resin (solid content 30%) 100

EP-C-5 (ceramic strengthening agent) 7

MEK 45

DMF 5

Pigment 15

The compounding liquid is applied on a release paper, dried, and applied to a dried surface layer of a synthetic leather adhesive. The fabric is laminated, stored in a heat chamber at 80.C for 12 hours, and then a release paper is scraped off to obtain a high abrasion resistance synthetic leather composition.

[Example 2]

Wet dry synthetic leather composition

A wet-dry type, ultra-fine non-woven, highly abrasion-resistant synthetic leather composition is obtained by changing the fabric of Example 1 into wet BASE, microfiber cloth, and the like.

[Example 3]

1) Fabric: Wet type is layered BASE

2) Mixed liquid

Polyurethane resin (solid content 30%) 100

EP-C-3 (ceramic strengthening agent) 10

MEK 45

DMF 5

Pigment 15

The above compounding liquid is applied on a release paper in an amount of 120 g / m < 2 >.wet, dried, and laminated again on the dried surface layer at 130 g / m & After hot air drying (80 ° C × 2 minutes), it is stored in a heat chamber of 80 ° C for about 8 hours. After releasing the release paper and embossing it, various patterns of high abrasion resistance synthetic leather are obtained.

ASTM D-3884 rules apply as a method of testing abrasion resistance.

As shown in FIG. 1, the test was conducted by directly contacting the abrasive stone with a PU, PVC or a thin layer in order to test the degree of abrasion by placing a predetermined amount of grinding stone on the synthetic leather composition and rotating the grinding stone. ~ 100 m As shown in FIG. 2, the products according to the present invention exhibited remarkably high abrasion resistance.

Claims (3)

In synthetic leather compositions, polyurethane and PVC together with a high abrasion resistance 10 m in particle size ~ 100 m Of a ceramic reinforcing agent. A process for producing a high abrasion resistance synthetic leather composition, characterized in that a reinforcing agent is formulated as in the examples. The method according to claim 2, wherein during the step of polymerizing the polyurethane resin and the resin such as PVC, ~ 100 m Of a ceramic reinforcing agent is added.