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Improved method for enhancing hydraulic stability of PU (polyurethane) colored film

A technology of stability and color film, applied in the field of improving the water pressure stability of PU color film on coated fabrics, can solve the problems of low moisture permeability and low water pressure resistance, and achieve the effect of improving water pressure stability and simple operation.

Inactive Publication Date: 2015-10-14
JIANGSU TRYD TEXTILE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of low moisture permeability and low water pressure resistance of existing coated fabrics (such as PU film-coated fabrics), the present invention provides an improvement method for improving the water pressure stability of PU color film, so that the PU color film of coated fabrics The water pressure resistance value reaches 10000mmH 2 Above O, it is a way to increase the water pressure value of PU color film mainly by controlling the particle size of oily color paste during the preparation process of PU color film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] An improvement method for improving the water pressure stability of the color film, the main implementation steps are:

[0013] (1) Filter the oily color paste (mainly solvent color paste) through a 1000-mesh filter to obtain an oily color paste with a particle size of less than 10 μm;

[0014] (2) Then prepare the rubber material: the ratio of parts is polyurethane 100, TOL40, MEK30, DMF20

[0015] Mixing and preparing to form rubber, the viscosity of the rubber is controlled at 1500-2000cps;

[0016] (3) Add the filtered oil-based color paste with a particle size of less than 10 μm into the prepared rubber, and turn on the stirring

[0017] The speed is controlled at 400-600rpm, and the stirrer is evenly stirred;

[0018] (4) Put the color glue that has been stirred and mixed evenly into the defoaming machine for defoaming;

[0019] (5) Finally, the color film is formed by the transfer film making machine, and the water pressure resistance value of the color film ...

Embodiment 2

[0021] An improvement method for improving the water pressure stability of the color film, the main implementation steps are:

[0022] (1) Prepare the rubber material: the ratio of parts is polyurethane 100, TOL40, MEK30, DMF20

[0023] Mixing and preparing to form rubber, the viscosity of the rubber is controlled at 1500-2000cps;

[0024] (2) Add oil-based color paste to the prepared glue, turn on the agitator, and control the speed at 400-600 rpm. The agitator will mix the glue and oil-based color paste evenly to form color glue. The viscosity of the color glue is controlled at 1500-2000 cps;

[0025] (3) Pour the prepared color glue into a 1000-mesh filter, filter out the color paste particles and impurities with a particle size of more than 10 μm, and obtain the color glue with a particle size of less than 10 μm;

[0026] (4) Put the above filtered color glue into the defoaming machine for defoaming treatment, the time is 15-30min;

[0027] (5) Finally, the color film i...

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Abstract

The invention discloses an improved method for enhancing hydraulic stability of a coated fabric, particularly an improved method for enhancing hydraulic stability of a PU (polyurethane) colored film. By using the method, the hydraulic resistance of the coated fabric PU colored film reaches 10000mm H2O or above. The method is mainly implemented by controlling the particle size of the oily color paste in the PU colored film preparation process.

Description

technical field [0001] The invention relates to a method for improving the water pressure stability of a coated fabric, in particular to a method for improving the water pressure stability of a PU color film of a coated fabric. Background technique [0002] In recent years, waterproof and breathable coated fabrics have the functions of waterproof, moisture permeability, breathability, insulation, windproof, and warmth retention, so that water does not penetrate the fabric under a certain pressure, and the sweat emitted by the human body can pass through in the form of water vapor in time. The fabric may be conducted to the outside without condensation and accumulation between the human body and the fabric, keeping the wearer's skin dry and warm, so it is loved by people, and its market prospect is broad. The function of waterproof and breathable coated fabrics is mainly realized through the coating and lamination of fabrics. Coated fabrics (such as PU film-coated fabrics) ar...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L75/04
Inventor 李肇魁张亚东刘介正徐广蔡玉梅
Owner JIANGSU TRYD TEXTILE RES INST
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