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Water-based high-transparency mirror ecological synthetic leather and preparation method thereof

A synthetic leather, water-based technology, applied in the field of polyurethane leather, can solve the problems of crease effect, lack of top brightening effect, high residual DMF solvent, reduced mirror translucent effect, etc. good effect

Inactive Publication Date: 2021-08-27
ZHEJIANG HEXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the conventional solvent-based polyurethane resin can achieve the appearance design of mirror products through wet coagulation and foaming, and dry release paper transfer. However, there are the following disadvantages: 1) DMF solvent is used in the process, and DMF solvent remains in the product 2) The coating has solvent residues, and the mirror translucent effect will decrease with long-term storage; 3) The crease effect and top brightness effect are lacking; 4) There are many processes

Method used

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  • Water-based high-transparency mirror ecological synthetic leather and preparation method thereof

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preparation example Construction

[0027] Among them, the preparation method of the water-based high-transparency mirror-surface ecological synthetic leather includes the following steps: preparing a high-solid-content resin layer slurry, preparing a mirror-surface water-based surface layer slurry, and preparing a solvent-free resin layer slurry; The first layer of slurry is coated on the release paper, and the coating knife position is 0.03-0.15mm. After drying, a mirror-like water-based surface layer is formed. The thickness of the mirror-like water-based surface layer is 0.01-0.1mm; the prepared high-solid content resin The first layer of slurry is coated on the mirror water-based surface layer, the coating knife position is 0.1-0.5mm, and then it is dried in sections. The drying temperature of the first stage is 80-100 ℃, and the drying temperature of the second stage is 100 -120°C, the drying temperature of the third stage is 155-175°C, the drying temperature of the fourth stage is 155-175°C, and the drying...

Embodiment 1

[0034] The preparation method of the water-based high-transparency mirror ecological synthetic leather comprises the following steps:

[0035] Preparation of high solid content resin layer slurry: the following raw materials by weight: 100 parts of 100% solid content isocyanate prepolymer (curing modulus at 3-5Mpa, 100% modulus), 3 parts of polyamine small molecule chain extension Agent, 0.1 part of 100% solid content silicone modified surfactant, 1 part of 100% solid content solvent-free colorant are mixed with a certain amount of water to form a high solid content resin layer slurry.

[0036] Prepare the mirror surface water-based surface layer slurry: the following raw materials by weight: 100 parts of water-based polyurethane resin, 0.1 part of water-based leveling agent BYK-346, 0.1 part of water-based defoamer BYK-024, 1 part of isocyanate-based water-based bridging agent, 3 parts of water-based color paste are mixed with a certain amount of water to form a mirror surfac...

Embodiment 2

[0043] The preparation method of the water-based high-transparency mirror ecological synthetic leather comprises the following steps:

[0044] Preparation of high solid content resin layer slurry: the following raw materials in parts by weight: 100 parts of 100% solid content isocyanate prepolymer (curing modulus at 3-5Mpa, 100% modulus), 10 parts of polyamine small molecule chain extension agent, 1 part of 100% solid content silicone modified surfactant, 5 parts of 100% solid content solvent-free colorant and a certain amount of water are mixed to form a high solid content resin layer slurry.

[0045] Prepare the mirror surface water-based surface layer slurry: The following raw materials are used in parts by weight: 100 parts of water-based polyurethane resin, 0.5 parts of water-based leveling agent BYK-346, 0.3 parts of water-based defoamer BYK-024, 3 parts of isocyanate-based water-based bridging agent, 10 parts of water-based color paste are mixed with a certain amount of...

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Abstract

The invention discloses water-based high-transparency mirror ecological synthetic leather. The leather comprises a high-solid-content resin layer having a first surface and a second surface opposite to the first surface, a mirror water-based surface layer arranged on the first surface of the high-solid-content resin layer, a solvent-free resin layer arranged on the second surface of the high-solid-content resin layer, and a base cloth layer attached to the solvent-free resin layer. Meanwhile, the invention also provides a preparation method of the water-based high-transparency mirror ecological synthetic leather. The water-based high-transparency mirror ecological synthetic leather obtained by the method comprehensively achieves the high physical property effect of a finished product, the DMF residue test of the finished product is less than or equal to 50 ppm, and the surface is good in transparency effect, flat and fine in crease.

Description

technical field [0001] The invention belongs to the field of polyurethane leather, and in particular relates to a water-based high-transparency mirror-surface ecological synthetic leather and a preparation method thereof. Background technique [0002] Polyurethane Synthetic Leather (Polyurethane Synthetic Leather) has the advantages of high strength, wear resistance, cold resistance, breathability, aging resistance, solvent resistance, soft texture, beautiful appearance, etc., and has good processing performance. It is an ideal imitation leather product instead of natural leather. Excellent leather. [0003] At present, the conventional solvent-based polyurethane resin can achieve the appearance design of mirror products through wet coagulation and foaming, and dry release paper transfer. However, there are the following disadvantages: 1) DMF solvent is used in the process, and DMF solvent remains in the product 2) The coating has solvent residues, and the mirror translucen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/145D06N3/0097D06N3/0077D06N3/147D06N3/0061D06N2211/28D06N2209/0838D06N2213/03
Inventor 戴丽陈倩徐一剡屠银梦王腾飞叶琦陈永范中于
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD
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