An intelligent moisture-permeable foam coating finishing agent and its application
A technology of foam coating and finishing agent, which is applied in fiber treatment, textile and papermaking, and liquid-repellent fibers, etc., to achieve the effects of less environmental pollution, simple compounding process, and energy and chemical saving
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Embodiment 1
[0024] Example 1: Preparation and application of moisture-permeable foam coating finishing agent.
[0025] (1) Preparation of PNCS microgel: Put 0.5g chitosan into 50ml concentration of 0.8% (v / v) glacial acetic acid aqueous solution, stir at 500~600r / min for 10~24 hours at normal temperature, let stand for 4 ~12h to obtain the CS solution; mix 2g NIPAAm, 0.02gMBA (1wt% NIPAAm) with 60g water, and put it into a thermometer and N 2 Catheter the round bottom flask. Pass N 2 Half an hour to remove oxygen, ultrasonically heated to 75°C, the solution obtained by dissolving 0.12g KPS in 5ml water was preheated to 75°C and poured into the flask, the reaction solution became turbid within 3min. Continue to sonicate and keep the temperature at 75°C, and finish the reaction after 100 minutes to obtain a PNSC microgel solution;
[0026] (2) Preparation of foaming finishing agent: water-based polyurethane, PNCS microgel and foaming agent were respectively added with water to prepare so...
Embodiment 2
[0037] Preparation and Application of Embodiment 2 Moisture-permeable Foam Coating Finishing Agent
[0038] The preparation method of the moisture-permeable foam coating finishing agent of this implementation is roughly the same as that of Example 1, the difference is that the amount ratio of aqueous polyurethane solution, PNCS microgel and foaming agent is 2:3:1, wherein, foaming agent Sodium lauryl sulfate was used. The prepared foam coating was tested to have a water vapor transmission rate of 1600 at a relative humidity of 50% and a temperature of 40°C; and a water vapor transmission rate of 2300 at a relative humidity of 90% and a temperature of 40°C.
Embodiment 3
[0039] Preparation and Application of Example 3 Moisture-permeable Foam Coating Finishing Agent
[0040]The preparation method of the moisture-permeable foam coating finishing agent of this implementation is roughly the same as that of Example 1, the difference is that the amount ratio of aqueous polyurethane solution, PNCS microgel and foaming agent is 2:1:1, wherein, foaming agent Sodium lauryl sulfate was used. The prepared foam coating was tested to have a water vapor transmission rate of 1200 at a relative humidity of 50% and a temperature of 40°C; and a water vapor transmission rate of 1900 at a relative humidity of 90% and a temperature of 40°C.
[0041] The finishing agent of the present invention has strong binding force between components, less chemical reagent consumption, and less environmental pollution; meanwhile, the compounding process is simple, the emulsification effect and uniformity are good, and the treatment effect is uniform; compared with the traditiona...
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