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Synthesized leather

A technology of synthetic leather and ultraviolet rays, which is applied in the field of synthetic leather, can solve problems such as peelability, poor low-temperature buckling resistance, perforation and rupture, and reduction of dynamic physical properties of the foam layer, so as to reduce peeling, improve performance such as low-temperature buckling resistance, The effect of good bond strength

Pending Publication Date: 2019-05-31
SEIREN SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the light-resistant aging effect of the bonding layer can be achieved, the light-resistant material particles will concentrate on the cell wall of the foam structure, forming a stress concentration point under dynamic mechanical behavior, forming a source of crack initiation, and reducing the dynamic physical properties of the foam layer. Causes perforation and rupture, causing problems such as peelability and low temperature buckling resistance

Method used

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  • Synthesized leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Using a coating machine, the surface layer liquid, the ultraviolet absorbing coating with an ultraviolet absorber content of 10%, and the polyurethane of the foaming adhesive layer are coated on the release paper in sequence. Among them, the coating amount of UV absorbing coating is 20g / m 2 . Finally, the base cloth layer is pasted on the foaming adhesive layer to obtain synthetic leather.

[0028] at 1.2W / m 2 Under the highest light intensity, after 144 hours of high sun exposure, the peel strength of synthetic leather is 16N / cm, the ordinary leather with the same formula without special UV absorbing coating is 12N / cm, and the low temperature buckling resistance is minus 20 degrees and 30,000 times pass.

Embodiment 2

[0030] Using a coating machine, the surface layer liquid, the ultraviolet absorbing coating with an ultraviolet absorber consumption of 5%, and the polyurethane of the foaming adhesive layer are coated on the release paper in sequence. Among them, the coating amount of UV absorbing coating is 22g / m 2 . Finally, the base cloth is pasted on the foaming layer to obtain synthetic leather.

[0031] at 1.2W / m 2 Under the highest light intensity, after 144 hours of high sun exposure, the peel strength of synthetic leather is 18N / cm, the ordinary leather with the same formula without special UV absorbing coating is 12N / cm, and the low temperature buckling resistance is minus 20 degrees and 30,000 times pass.

Embodiment 3

[0033] Using a coating machine, the surface layer liquid, the ultraviolet absorbing coating with an ultraviolet absorber content of 25%, and the polyurethane of the foaming adhesive layer are coated on the release paper in sequence. Among them, the coating amount of UV absorbing coating is 15g / m 2 . Finally, the base cloth is pasted on the foaming layer to obtain synthetic leather.

[0034] at 1.2W / m 2 Under the highest light intensity, after 144 hours of high sun exposure, the peel strength of synthetic leather is 17N / cm, and the ordinary leather with the same formula without special UV absorbing coating is 12N / cm, and the low temperature buckling resistance is minus 20 degrees and 30,000 times pass.

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Abstract

The invention discloses synthesized leather. The synthesized leather comprises a basic cloth layer (1), a surface layer (4) and a foaming bonding layer (2) which is located between the basic cloth layer (1) and the surface layer (4), and further comprises an ultraviolet adsorption coating (3) which is arranged between the surface layer (4) and the foaming bonding layer (2); the ultraviolet adsorption coating (3) includes an ultraviolet adsorption agent, wherein the ultraviolet adsorption agent is titanium dioxide ultra-fine powder formed by mixing rutile titanium dioxide and anatase titanium dioxide. According to the synthesized leather, a layer of the ultraviolet adsorption coating is additionally arranged in a conventional synthesized leather structure, so that the synthesized leather has an excellent light-proof aging effect, performance such as the peel strength and the low temperature buckling resistance of the synthesized leather after the synthesized leather is aired for a longtime are improved, phenomena such as peeling and cracking of the products during daily use are effectively reduced, and the hand feeling of the synthesized leather can also be improved.

Description

technical field [0001] The invention relates to a synthetic leather, in particular to a synthetic leather resistant to light aging. Background technique [0002] Synthetic leather is a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. In order to meet the increasing environmental protection requirements at home and abroad and the increasing health and safety needs of consumers, synthetic leather has replaced a large number of resources. China has become a major producer of synthetic leather in the world. With the increasing market demand, the gap between supply and demand is increasing. my country's synthetic leather industry is ushering in unprecedented opportunities for development. [0003] As a large user of synthetic leather, automobiles have played an important role in the development of synthetic leather. The high requirements of automotive interiors continue to promote the development of high-pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
Inventor 夏青青陈黎亮周洪霖
Owner SEIREN SUZHOU CO LTD
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