Preparation process of first coat material with moisture permeable function

A kind of primer material and preparation technology, applied in the field of textile fabrics, can solve the problems that it is difficult to break through 3500MMH2O, the surface toughness of the coating film is not enough, and the rate of finished product A is low, so as to improve the moisture permeability, proper permeability and activity long time effect

CN104674557AActive Publication Date: 2015-06-03KUNSHAN HUAYANG NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-06-03

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Abstract

The invention discloses a preparation process of a first coat material with the moisture permeable function. The process comprises the following steps: uniformly mixing butanone, water and polyurethane resin in mass ratio of (66-68) to (3-5) to (29-31) to obtain a main resin solution; agitating and uniformly mixing 1,6-diisocyanatohexane and the main resin mixed solution obtained in step 3 in mass ratio of 100 to (1.5-2.5) at the rotating speed of 1000rpm and under the temperature of 25 to 35 DEG C to obtain the regulated main resin mixed solution; filtering the regulated main resin mixing solution through a nylon mesh with 100 to 200 meshes to obtain the filtered main resin mixed solution; standing the filtered main resin mixing solution for at least 2 hours and defoaming, wherein the standing is performed in a vacuum condition for 2 hours. According to the preparation process, the weakness that the first coat material is easily expanded in water is overcome, the moisture permeable performance of a fabric body can be improved, so that the fabric is high in service performance, and the wear resistance is greatly improved.
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Description

technical field

[0001] The invention relates to a preparation process of a primer material with a moisture-permeable function, and belongs to the technical field of textile fabrics. Background technique

[0002] The hydrophilic non-porous PU moisture-permeable raw material currently used in the market, this method is to apply the hydrophilic non-porous PU moisture-permeable raw material to the surface of the base fabric through a coating machine, and then pass it through the coating machine oven. Hot air drying, solvent volatilization, and film formation. Make the fabric waterproof and moisture-permeable. The moisture-permeable principle is that the moisture-permeable raw materials contain hydrophilic substances, which have the functions of moisture absorption-diffusion-desorption. The moisture-permeable fabric processed by this process will swell when it encounters water, resulting in a decrease in the abrasion resistance of the film, and the moisture-permeable performance...

Examples

Embodiment

[0021] Embodiment: a kind of primer material preparation process with moisture permeability function, comprising:

[0022] Step 1. Mix methyl ethyl ketone, water and polyurethane resin according to the mass ratio of 66~68:3~5:29~31 to form the main resin solution. Note: the mixing ratio of Example 1 is 66:3:31, Example 2 The mixing ratio is 67:5:29, and the mixing ratio of Example 3 is 68:4:30;

[0023] Step 2, adding N-methylethanolamine as an accelerator in the main resin solution of step 1, the mass ratio of the main resin solution and the accelerator is 100:2.5 or 3 or 3.5;

[0024] Step 3: Slowly put the mixture of methyl ethyl ketone and toluene into the main resin solution in step 2 and stir evenly to form a main resin mixed solution. The mass ratio of this mixed solution to the main resin solution is 100:43 or 44 or 45, so Butanone and toluene form the mixed solution according to the mass ratio of 1:2 or 1:1;

[0025] Step 4. Stir the mixed solution of hexahexanediis...