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Aqueous polyurethane making method used for superfine fiber synthetic leather production

A water-based polyurethane and ultra-fine fiber technology, applied in chemical instruments and methods, synthetic resin layered products, textiles and papermaking, etc., can solve problems such as solvent pollution, achieve strong surface adsorption, small particle size, and solve solvent pollution. Effect

Active Publication Date: 2014-08-13
ANAN CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of water-based polyurethane face-making method that is used for the manufacture of superfine fiber synthetic leather, this method can effectively solve the problem of solvent pollution in the prior art, and improve the water resistance, mechanical properties of superfine fiber synthetic leather, and Hygienic performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] 1) Preparation of surface layer slurry

[0033] In parts by weight, take 80-90 parts of water-based polyurethane finishing agent, 3-10 parts of water-based color paste, 1-2 parts of nano-silica, 0.1-0.5 parts of coupling agent, and 0.1-0.5 parts of cross-linking agent and mix evenly , to obtain the surface layer slurry;

[0034] Among them, the water-based polyurethane coating agent is water-emulsion polyurethane resin, such as the water-based polyurethane resin DEG-3751, DEG-3731, DEG-3732, etc. for the synthetic leather surface layer of Yantai Daocheng Chemical Co., Ltd.;

[0035]The coupling agent is a silane coupling agent, such as the silane coupling agent KH-550 of Nanjing Jingtianwei Chemical Co., Ltd.; the cross-linking agent is a water-dispersed polyisocyanate cross-linking agent, such as the water Dispersed polyisocyanate crosslinking agent EC600, EC601, EC602, etc.

[0036] Nano-silica is hydrophilic nano-silica, such as LF33 hydrophilic nano-silica of Xius...

Embodiment 1

[0045] Include the following steps:

[0046] 1) Preparation of surface layer slurry

[0047] In parts by weight, 80 parts of water-based polyurethane finishing agent, 3 parts of water-based color paste, 1 part of nano-silica, 0.1 part of coupling agent, and 0.1 part of cross-linking agent were uniformly mixed to obtain the surface layer slurry;

[0048] Among them, the water-based polyurethane is DEG-3751 water-based polyurethane resin for synthetic leather surface layer of Yantai Daocheng Chemical Co., Ltd.; the coupling agent is silane coupling agent KH-550 of Nanjing Jingtianwei Chemical Co., Ltd.; the cross-linking agent is Shanghai Sisheng Polymer Water-dispersible polyisocyanate crosslinking agent EC600 from Material Co., Ltd. The nano-silica is LF33 hydrophilic nano-silica from Xiushan Longfei New Material Co., Ltd.; the water-based color paste is an industrialized water-based resin colorant.

[0049] 2) Scratch coating of the surface layer

[0050] First, use a scra...

Embodiment 2

[0057] Include the following steps:

[0058] 1) Preparation of surface layer slurry

[0059] In parts by weight, 90 parts of water-based polyurethane finishing agent, 10 parts of water-based color paste, 2 parts of nano-silica, 0.5 part of coupling agent, and 0.5 part of cross-linking agent were uniformly mixed to obtain the surface layer slurry;

[0060] Among them, the water-based polyurethane coating agent is the water-based polyurethane resin DEG-3731 of synthetic leather surface layer of Yantai Daocheng Chemical Co., Ltd.; the coupling agent is the silane coupling agent KH-550 of Nanjing Jingtianwei Chemical Co., Ltd.; the cross-linking agent is Shanghai Si Water-dispersible polyisocyanate crosslinker EC601 from Sheng Polymer Materials Co., Ltd. The nano-silica is LF33 hydrophilic nano-silica from Xiushan Longfei New Material Co., Ltd.; the water-based color paste is an industrialized water-based resin colorant.

[0061] 2) Scratch coating of the surface layer

[0062]...

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Abstract

The invention relates to an aqueous polyurethane making method used for superfine fiber synthetic leather production. The method using a superfine fiber synthetic leather base cloth as a substrate comprises the following steps: knifing release paper with a surface layer slurry containing an aqueous polyurethane finishing agent, an aqueous color paste, nanometer silica, a wetting agent, a coupling agent and a cross-linking agent to form a surface layer, and drying; knifing the surface layer with a bonding slurry containing an aqueous polyurethane adhesive and the cross-linking agent, and applying to the superfine fiber synthetic leather base cloth; and drying, cooling, and peeling to obtain he superfine fiber synthetic leather with an aqueous polyurethane coating. The method solves the solvent pollution problem of superfine fiber synthetic leather production, and the peel strength, the surface color dry web fastness, the surface color wet rub fastness and the water permeability of the superfine fiber synthetic leather obtained in the invention are greater than 20(N / 20mm), greater than 4 grade, greater than 3.5 grade, and greater than 1.1(mg / cm<2>.h).

Description

technical field [0001] The invention relates to the technical field of superfine fiber synthetic leather, in particular to a water-based polyurethane surface-making method for making superfine fiber synthetic leather. Background technique [0002] Microfiber is a kind of differentiated fiber that has developed rapidly in recent years, and it is a typical representative of new synthetic fibers. At present, there is no accurate definition in the world, and the definitions of countries are slightly different, but the linear density is used as the definition standard. The German Textile Association refers to single fibers with PET linear density lower than 1.0dtex and PA linear density lower than 1.0dtex collectively as ultrafine fibers, and the US PET Committee defines fibers with a single filament fineness of 0.3dtex to 1.0dtex as ultrafine fibers Fiber, AKZO believes that the upper limit of ultrafine fiber should be 0.3dtex, and Italy refers to fibers below 0.5dtex as ultraf...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B37/02B32B27/12B32B37/26B32B27/18B32B27/40
Inventor 朱国勤顾宇霆丁琴
Owner ANAN CHINA
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