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Solvent-less high-light finish ultrafine fiber polyurethane synthetic leather and preparation method thereof

A solvent-free polyurethane and ultra-fine fiber technology, applied in textiles and papermaking, can solve the problems of DMF residue, coarse wrinkles, poor flatness, etc., and achieve excellent hydrolysis resistance, smooth touch, and high wear resistance.

Active Publication Date: 2017-11-24
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of poor flatness, loose surface, and coarse wrinkles when making mirror products with microfiber substrates. At the same time, it simplifies the production process of the product and solves the problem of DMF residue in the product.

Method used

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  • Solvent-less high-light finish ultrafine fiber polyurethane synthetic leather and preparation method thereof
  • Solvent-less high-light finish ultrafine fiber polyurethane synthetic leather and preparation method thereof
  • Solvent-less high-light finish ultrafine fiber polyurethane synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Evenly coat a layer of surface layer polyurethane slurry with a thickness of 13 silk on the high-gloss mirror film, and dry at 120°C to form a surface layer polyurethane layer; evenly coat a layer of thickness of 30 silk middle layer polyurethane slurry on the surface layer polyurethane layer The material is dried at 140°C to form a middle polyurethane layer; a layer of polyether-type solvent-free polyurethane slurry with a thickness of 40 filaments is uniformly coated on the middle polyurethane layer, and the polyether-type solvent-free polyurethane is formed after pre-reaction at 90°C for 3 minutes. Layer: 0.7mm microfiber polyurethane synthetic leather is fixed at 140°C, after cooling, it is laminated with polyether-type solvent-free polyurethane layer, cured in an oven at 140°C for 10 minutes, rolled together, and then cured in a 70°C curing room for 24 hours; The mirror film is peeled off to obtain a finished product of solvent-free high-gloss varnish microfiber pol...

Embodiment 2

[0055]Evenly coat a layer of surface polyurethane slurry with a thickness of 15 silk on the high-gloss mirror film, and dry at 125°C to form a surface polyurethane layer; evenly coat a layer of 25 silk middle layer polyurethane slurry on the surface polyurethane layer The material is dried at 120°C to form the middle polyurethane layer; a layer of polyether-type solvent-free polyurethane slurry with a thickness of 45 filaments is evenly coated on the middle polyurethane layer, and the polyether-type solvent-free polyurethane slurry formed after pre-reaction at 100°C for 2.5 minutes Polyurethane layer: 0.9mm microfiber polyurethane synthetic leather is fixed at 150°C, after cooling, it is laminated with polyether solvent-free polyurethane layer, cured in an oven at 150°C for 8 minutes, rolled together, and then cured in a 70°C curing room for 24 hours; The high-gloss mirror film is peeled off to obtain a finished product of solvent-free high-gloss paint surface microfiber polyur...

Embodiment 3

[0064] Evenly coat a layer of surface layer polyurethane slurry with a thickness of 16 silk on the high-gloss mirror film, and dry at 130°C to form a surface layer polyurethane layer; evenly coat a layer of thickness of 30 silk middle layer polyurethane slurry on the surface layer polyurethane layer The material is dried at 140°C to form the middle polyurethane layer; a layer of polyether-type solvent-free polyurethane slurry with a thickness of 50 filaments is evenly coated on the middle polyurethane layer, and the polyether-type solvent-free polyurethane is formed after pre-reaction at 110°C for 2 minutes. layer; 1.2mm microfiber polyurethane synthetic leather is fixed at 160°C, after cooling, it is laminated with polyether type solvent-free polyurethane layer, and cured in an oven at 150°C for 10 minutes. The mirror film is peeled off to obtain a finished product of solvent-free high-gloss varnish microfiber polyurethane synthetic leather.

[0065] Microfiber polyurethane s...

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Abstract

The invention discloses solvent-less ultrafine fiber high-light finish polyurethane synthetic leather. The solvent-less ultrafine fiber high-light finish polyurethane synthetic leather is composed of a surface polyurethane layer, a middle polyurethane layer, a polyether type solvent-less polyurethane layer and ultrafine fiber polyurethane synthetic leather sequentially from top to bottom. The solvent-less ultrafine fiber high-light finish polyurethane synthetic leather is prepared by the following steps: coating a high-light mirror mask with surface layer polyurethane slurry, coating middle layer polyurethane slurry after baking, coating polyether type solvent-less polyurethane slurry after baking, laminating with constant-breadth ultrafine fiber polyurethane synthetic leather after pre-reaction, conducting aging, rolling together and aging again, and stripping the high-light mirror mask to obtain the finished product. The solvent-less ultrafine fiber high-light finish polyurethane synthetic leather prepared by the invention has the following superior properties: high gloss, high flatness, no crease, smooth tactility, cuts comparable to genuine leather, hydrolysis resistance, wear resistance, normal-temperature deflection resistance, freezing resistance, high efficiency, environmental protection and the like, and can be widely applied to high grade shoes, bags, suitcases and decorative materials.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a solvent-free high-gloss varnish superfine fiber polyurethane synthetic leather and a preparation method thereof. Background technique [0002] Microfiber synthetic leather is a composite material of microfiber and polyurethane. Microfibers have a fineness and structure similar to collagen fibers, so they have characteristics similar to natural leather in terms of surface morphology and mechanical properties. Microfiber leather is made of superfine fiber and polyurethane, which has the appearance and performance similar to natural leather. It is currently the closest synthetic leather to genuine leather. [0003] The glossiness of the natural leather surface can be divided into high gloss, bright, semi-gloss, semi-dull, and matte. Among them, patent leather is leather with high gloss and firmness on the surface. Its surface is as smooth as lacquer, trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14
Inventor 迟红梅张玉萍陈永志阮仁祥阚道俊胡国金朱福俭
Owner ANHUI ANLI MATERIAL TECH
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