Method for producing water-based polyurethane synthetic leather

A technology of water-based polyurethane and production methods, which is applied in the direction of chemical instruments and methods, layered products, textiles and papermaking, etc., which can solve the problems of large-scale products, such as the regulation of foaming effect and the control of product quality, ingredients and process steps To solve problems such as cumbersomeness and environmental hazards for operators, achieve the effect of full hand feeling, broad market application prospects, good air permeability and hygroscopicity

Active Publication Date: 2015-06-10
HUADA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, water-based polyurethane synthetic leather is mostly produced by water-based mechanical foaming, while ultra-fine fiber synthetic leather is still mainly produced by solvent-based dry and wet methods. Water-based mechanical foaming is used to manufacture polyurethane synthetic leather. The ingredients and process steps are slightly different. It is cumbersome and takes a long time, and mechanical foaming i

Method used

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  • Method for producing water-based polyurethane synthetic leather
  • Method for producing water-based polyurethane synthetic leather
  • Method for producing water-based polyurethane synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Materials and reagents

[0057] 1) The base fabric is made of Fujian Nanfang Co., Ltd. 0.35 white sheet A, thickness: 0.35mm.

[0058] 2) The formulation of base cloth treatment liquid is as follows in Table 2:

[0059] Table 2 Formula of base fabric treatment liquid

[0060]

[0061] 3) The formula of water-based polyurethane slurry is shown in Table 3:

[0062] Table 3 Waterborne polyurethane slurry formula

[0063]

[0064] The preparation method of the water-based polyurethane slurry is as follows: mix the raw materials according to Table 3, and obtain them after being uniformly stirred by a high-speed machine.

[0065] 2. Preparation method

[0066] (1) Moisture conditioning finishing of the base cloth: impregnate the base cloth in the base cloth treatment solution, and control the impregnated liquid rate of the base cloth to 50% through the gap between the rolls and the pressure;

[0067] (2) Coating of water-based slurry: The water-based polyurethan...

Embodiment 2

[0071] 1. Materials and reagents

[0072] 1) The base fabric is 0.55 black tannin of Fujian Nanfang Co., Ltd., thickness: 0.55mm.

[0073] 2) The formulation of the moisture-conditioning finishing agent solution for the base cloth is as follows in Table 4:

[0074] Table 4 Formula of substrate treatment liquid

[0075]

[0076] 3) The formula of water-based polyurethane slurry is shown in Table 5:

[0077] Table 5 Waterborne polyurethane slurry formula

[0078]

[0079]

[0080] The preparation method of the water-based polyurethane slurry is as follows: mix the raw materials according to Table 5, and obtain them evenly by high-speed mechanical stirring.

[0081] 2. Preparation method

[0082] (1) Moisture conditioning finishing of the base cloth: impregnate the base cloth in the base cloth treatment solution, and control the liquid-carrying rate of the base cloth after the impregnation through the roll gap and pressure to 70%;

[0083] (2) Coating of water-based...

Embodiment 3

[0087] 1. Materials and reagents

[0088] 1) The base fabric is Fujian Nanfang Co., Ltd. 0.55 red brown double left diagonal 31, thickness: 0.55mm.

[0089] 2) The formulation of the moisture-conditioning finishing agent solution for the base cloth is shown in Table 6:

[0090] Table 6 Formula of substrate treatment liquid

[0091]

[0092] 3) The formula of water-based polyurethane slurry is shown in Table 7:

[0093] Table 7 Waterborne polyurethane slurry formula

[0094]

[0095]

[0096] The preparation method of the water-based polyurethane slurry is as follows: mix the raw materials according to Table 7, and obtain them evenly by high-speed mechanical stirring.

[0097] 2. Preparation method

[0098] (1) Moisture conditioning finishing of the base cloth: impregnate the base cloth in the base cloth treatment solution, and control the impregnated liquid rate of the base cloth to 80% through the gap between the rolls and the pressure;

[0099] (2) Coating of w...

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Abstract

The invention relates to a method for manufacturing water-based polyurethane synthetic leather. The designed technological process comprises the steps of preparing base fabric, humidifying and arranging the base fabric, coating water-based sizing agent, acid-releasing, solidifying, forming, washing, drying and sizing. The method has the advantages that no solvent is added, the organic contamination is thoroughly eliminated from the source, the potential safety hazards are eliminated, the working environment of workers is improved, and green and environment protective cleaning production is achieved indeed; the performances of a product is close to or superior to those of a solvent type product in appearance, structure, hand feeling and physical property, and the product is the best substitute for the solvent type product as well as a mainstream product of synthetic leather field development in the future.

Description

technical field [0001] The invention relates to a polyurethane synthesis technology, in particular to an environment-friendly preparation method of water-based polyurethane synthetic leather, which belongs to the field of chemical synthesis. Background technique [0002] In the current environment where the country requires energy conservation and emission reduction, it is the general trend to develop products that replace solvent-based polyurethane. The water-based polyurethane uses water as the dispersion medium, which is non-toxic and harmless, and does not add any organic solvents during the entire water-based tanning production process, which will not cause a burden on the environment. The need for healthy and sustainable development. [0003] At present, water-based polyurethane synthetic leather is mostly produced by water-based mechanical foaming, while ultra-fine fiber synthetic leather is still mainly produced by solvent-based dry and wet methods. Water-based mech...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B37/02B32B38/16B32B38/18
Inventor 王艳艳张哲徐帅曲言礼郑玉
Owner HUADA CHEM GRP CO LTD
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