Physical and chemical properties of PVC artificial leather - Guangyuan Ruifeng New Materials

Category: Leather field

Release Time: 2020-05-20

Summary: PVC artificial leather is widely used in clothing, bags, decoration, and packaging. Such imitation leather clothing and bags once flooded the streets, satisfying people's desire to wear leather.

PVC artificial leather is widely used in clothing, bags, decoration, and packaging. Counterfeit leather clothing and bags once flooded the streets, satisfying people's desire to wear leather. So, what are the physical and chemical properties of PVC artificial leather products? (Crosslinking agents used in PVC artificial leather)

I. Physical Properties of PVC Artificial Leather Products

1. Cold Bend Resistance: This refers to the ability of artificial leather to maintain elasticity at low temperatures. Generally, products become brittle and easily break at low temperatures; cold-resistant products have different requirements depending on the region of use. (Crosslinking agents used in PVC artificial leather)

2. Cold Impact Resistance: PVC artificial leather is placed at -20 degrees for 4 hours, or according to customer-specified conditions. After removal, it is struck with a striking hammer. If less than 3 out of 5 test pieces show cracks or breakage, it is considered qualified. (Crosslinking agents used in PVC artificial leather)

3. Tear Strength: Test pieces are cut according to company standards and placed in a tensile machine. They are pulled at a speed of 200 mm/min until they break. The maximum value is taken as the tear strength. (Crosslinking agents used in PVC artificial leather)

4. Peel Strength: This refers to the bonding strength between the adhesive and the substrate.

5. Fastness: Refers to the ability of ink or treatment paste to adhere to the product surface.

6. Color Fastness: Refers to the characteristic of the color remaining unchanged.

7. Hand Feel: Refers to the feeling of touching the artificial leather by hand, including softness, surface feel, and Q-feel. Softness refers to the degree of softness of the product; surface feel refers to touching the sample and the attached board surface in the same direction and comparing the tactile feeling; Q-feel (grip feel) refers to whether the adhesive tape easily recovers after gripping the product surface and releasing it, and whether there is any whitening.

8. Tensile Strength: Refers to the degree of load per unit cross-sectional area when the product specimen is stretched to breaking point. (Crosslinking agents used in PVC artificial leather)

The product specimen is folded inward, pressed with a weight for 5 minutes, and then opened to check for whitening at the crease. (Crosslinking agents used in PVC artificial leather)

II. Chemical Properties of PVC Artificial Leather Products

1. Safety Standards: Refers to the content of heavy metals, fluorine, chlorine, bromine, phenol, and DOP in PVC artificial leather products. The highest current standard is compliance with REACH standards.

AZO\DYE No German-banned azo compounds, there are 20 kinds. (Crosslinking agents used in PVC artificial leather)

2. VCM: Because this substance in PVC artificial leather has a carcinogenic effect, there is strict content control. (Crosslinking agents used in PVC artificial leather)

3. Flame Retardancy: Test pieces are cut according to standards, burned, and the time it takes for the flame to rise from bottom to top is recorded. Flame-retardant leather is not necessarily non-flammable, but its burning speed is slow. (Crosslinking agents used in PVC artificial leather)

4. High Flame Retardancy: The product self-extinguishes within 2 seconds after being removed from the fire source.

5. Sulfur Resistance: When in contact with sulfides, the pattern and color show no significant changes.

6. Heat Resistance: The pattern and color show no significant changes after prolonged exposure to high temperatures.

7. Weather Resistance: The degree of change in color and quality of PVC artificial leather under light and humidity. This is generally required for outdoor products. (Crosslinking agents used in PVC artificial leather)

8. Mildew Resistance: Refers to the ability to resist the erosion of certain bacteria in the usage environment. One type of mildew inhibitor is not effective against all different bacteria, so it is necessary to know the type of bacteria to be defended and to determine the qualified criteria. (Crosslinking agents used in PVC artificial leather)

9. Anti-static: Refers to the ability of artificial leather to adsorb dust.

10. Migration: Includes pigment migration and plasticizer migration. Pigment migration refers to the phenomenon where the color inside the adhesive material transfers to the surface of the contact adhesive material; plasticizer migration refers to the phenomenon where the plasticizer in the adhesive material dissolves in saliva. (Crosslinking agents used in PVC artificial leather)

Keywords: Physical and chemical properties of PVC artificial leather - Guangyuan Ruifeng New Materials

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