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Waterborne polyurethane composite material for shoes and preparation method thereof

A water-based polyurethane and composite material technology, applied in the field of polyurethane materials, can solve the problems that the formula cannot meet the customer's peeling, folding resistance, hydrolysis resistance, the formulation process cannot meet the customer's use requirements, and the customer's requirements cannot be met, and the surface can not be satisfied. Slippery requirements, soft and comfortable bonding and shape, prolonging service life

Pending Publication Date: 2022-07-12
ZHEJIANG HEXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solvent-based polyurethane resin, through wet coagulation and foaming, and dry release paper transfer, can realize the production of polyurethane synthetic leather. However, DMF solvent is used in the conventional production process, and the product will have more or less solvent residue. And the process is complicated, will produce a lot of waste gas and waste water
In today's society where green environmental protection is the mainstream, everyone pays more and more attention to their own health, and the requirements for environmental protection of products are getting higher and higher. The traditional polyurethane synthetic leather can no longer meet the requirements of customers; ordinary water-based coating technology, The formula cannot meet the requirements of the customer for peeling, folding resistance, and hydrolysis resistance; the brand customer requires that the DMF content of the product be controlled within 50ppm, and the existing formula technology cannot meet the customer's use requirements

Method used

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  • Waterborne polyurethane composite material for shoes and preparation method thereof
  • Waterborne polyurethane composite material for shoes and preparation method thereof
  • Waterborne polyurethane composite material for shoes and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]A water-based polyurethane composite material for shoes, comprising an epidermis layer, an intermediate layer, an adhesive layer and a base fabric layer that are sequentially attached from the outside to the inside; the epidermis layer is made of water-based surface layer resin slurry; the intermediate layer is made of The water-based intermediate layer is made of resin slurry; the adhesive layer is made of solvent-free resin slurry;

[0052] The water-based surface layer resin slurry is made of the following components in parts by weight:

[0053]

[0054] The water-based intermediate layer resin slurry is made of the following components in parts by weight:

[0055]

[0056] The solvent-free resin slurry is made of the following components in parts by weight:

[0057]

[0058] The viscosity of the water-based surface layer resin slurry is 5500CPS / 25°C, and the coating weight is 180g / m; the viscosity of the water-based intermediate layer resin slurry is 4500CP...

Embodiment 2

[0068] A water-based polyurethane composite material for shoes, comprising an epidermis layer, an intermediate layer, an adhesive layer and a base fabric layer that are sequentially attached from the outside to the inside; the epidermis layer is made of water-based surface layer resin slurry; the intermediate layer is made of The water-based intermediate layer is made of resin slurry; the adhesive layer is made of solvent-free resin slurry;

[0069] The water-based surface layer resin slurry is made of the following components in parts by weight:

[0070]

[0071] The water-based intermediate layer resin slurry is made of the following components in parts by weight:

[0072]

[0073] The solvent-free resin slurry is made of the following components in parts by weight:

[0074]

[0075] The viscosity of the water-based surface layer resin slurry is 5500CPS / 25°C, and the coating weight is 180g / m; the viscosity of the water-based intermediate layer resin slurry is 4500C...

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Abstract

The invention provides a waterborne polyurethane composite material for shoes. The waterborne polyurethane composite material comprises a surface layer, a middle layer, a bonding layer and a base cloth layer which are sequentially bonded from top to bottom, the surface layer is prepared from water-based surface layer resin slurry; the middle layer is made of water-based middle layer resin slurry; and the bonding layer is made of solvent-free resin slurry. The waterborne polyurethane composite material for the shoes, disclosed by the invention, has relatively high stripping force and good folding resistance; according to the preparation method, the use of an organic solvent DMF is avoided, the DMF is not contained in the finished product, and the prepared product meets the requirement that the DMF amount is controlled within 50ppm of customers, and belongs to a green and environment-friendly product. The invention further provides a preparation method of the composite material for the waterborne polyurethane shoes, the steps of a wet method are reduced, foaming of the solvent-free resin is directly used for replacing wet-method base manufacturing, and the effects of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of polyurethane materials, in particular to a water-based polyurethane composite material for shoes and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather is a product that imitates natural leather and has been used in every corner of our lives. Solvent-based polyurethane resin can be made of polyurethane synthetic leather through wet solidification and foaming, and dry release paper transfer. In addition, the process is complicated, and a large amount of waste gas and waste water will be generated. In today's society where green environmental protection is the mainstream, everyone pays more and more attention to their own health, and has higher and higher requirements for the environmental protection of products. Traditional polyurethane synthetic leather can no longer meet the requirements of customers; ordinary water-based coating processes, The formula can not me...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/146D06N3/147D06N3/0063D06N3/145D06N3/0009D06N3/0077D06N3/0097D06N2209/103D06N2209/1664D06N2211/106D06N2211/28D06N2209/1685D06N2209/1671Y02P70/62
Inventor 戴丽徐一剡顾志豪陈倩周云峰金丹屠银梦辛世明
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD
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