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A kind of humidity control microcapsule and its preparation method and its application in interior wall humidity control paint

A technology of microcapsules and humidity control, which is applied in the direction of microcapsule preparation, microsphere preparation, coating, etc., which can solve the problems of poor scrub resistance, water resistance and low moisture absorption of the coating film, and achieve good buffering effect and good humidity control effect of effect

Inactive Publication Date: 2016-01-20
广东杜威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low moisture absorption, poor scrub resistance and water resistance of the existing hygroscopic coatings, and provide a humidity-adjusting microcapsule with large moisture absorption and scrub resistance and a preparation method thereof

Method used

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  • A kind of humidity control microcapsule and its preparation method and its application in interior wall humidity control paint
  • A kind of humidity control microcapsule and its preparation method and its application in interior wall humidity control paint
  • A kind of humidity control microcapsule and its preparation method and its application in interior wall humidity control paint

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Experimental program
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Effect test

Embodiment 1

[0036] 1. Preparation of humidity-adjusting microcapsules

[0037] Get 5 mass parts of acrylic acid, under ice bath conditions, add 6 mass parts of NaOH solution to adjust the neutralization degree to 40% and then return to room temperature; add 5 mass parts of acrylamide and 5 mass parts of the neutralized acrylic acid solution Hydroxymethylcellulose, 0.05 parts by mass of potassium persulfate, and 0.01 parts by mass of N,N-dimethylbisacrylamide were uniformly mixed and used as the water phase.

[0038] 0.22 parts by mass of polyoxyethylene sorbitan monostearate and 0.53 parts by mass of sorbitan monostearate were added to 50 parts by mass of toluene, and mixed uniformly as an oil phase. After mixing the water phase and the oil phase, pre-emulsify at 500rmp for 30min, reduce the rotation speed to 250rmp, and react at 65°C for 4 hours to obtain the core material emulsion.

[0039]Get 0.05 parts by mass of potassium persulfate and dissolve it in 10 parts by mass of deionized w...

Embodiment 2

[0045] Preparation of humidity-adjusting microcapsules

[0046] Take 5 parts by mass of acrylic acid, under ice bath conditions, add 6 parts by mass of NaOH solution to adjust the degree of neutralization to 40%, and then return to room temperature; add 10 parts by mass of acrylamide and 8 parts by mass of acrylic acid to the neutralized acrylic acid solution Hydroxymethylcellulose, 0.075 parts by mass of potassium persulfate, and 0.01 parts by mass of N,N-dimethylbisacrylamide were uniformly mixed and used as the water phase. 0.15 parts by mass of polyoxyethylene sorbitan monostearate and 0.60 parts by mass of sorbitan monooleate were added to 50 parts by mass of toluene, and mixed uniformly as an oil phase. After mixing the water phase and the oil phase, pre-emulsify at 1000rmp for 20min, reduce the rotation speed to 200rmp, and react at 75°C for 2 hours to obtain the core material emulsion.

[0047] Dissolve 0.025 parts by mass of potassium persulfate in 10 parts by mass o...

Embodiment 3

[0053] Preparation of humidity-adjusting microcapsules

[0054] Take 10 mass parts of acrylic acid, under ice bath conditions, add 14 mass parts of NaOH solution to adjust the degree of neutralization to 50% and return to room temperature; add 10 mass parts of acrylamide and 5 mass parts of the neutralized acrylic acid solution Hydroxymethylcellulose, 0.1 parts by mass of potassium persulfate, and 0.013 parts by mass of N,N-dimethylbisacrylamide were uniformly mixed and used as the water phase. 0.60 parts by mass of polyoxyethylene sorbitan monooleate and 1.4 parts by mass of sorbitan monooleate were added to 60 parts by mass of toluene, and mixed uniformly as an oil phase. After the water phase and the oil phase were mixed, they were pre-emulsified at 1500rmp for 15min, the rotation speed was reduced to 200rmp, and they were reacted at 70°C for 3 hours to obtain the core layer emulsion.

[0055] Get 0.05 parts by mass of potassium persulfate and dissolve it in 30 parts by ma...

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Abstract

The invention discloses a humidity-controlling microcapsule and a preparation method thereof as well as an application of the humidity-controlling microcapsule in an interior wall humidity-controlling coating. The preparation method of the humidity-controlling microcapsules comprises the steps of under a water bath condition, taking acrylic acid, adding an alkaline solution, adding acrylamide, hydroxymethyl cellulose, an initiator, N,N-dimethyl bisacrylamide, and mixing evenly to obtain a water phase, adding an emulsifier to an organic solvent to form an oil phase, reacting the water phase with the oil phase at a temperature ranging from 65 to 75 DEG C to obtain a core material emulsion, dissolving the initiator in deionized water and adding into the core material emulsion with acrylate monomers, respectively, increasing the temperature to 78-85 DEG C, heating for 1-2 hours, adding ethanol for demulsification, washing and drying in vacuum to obtain the humidity-controlling microcapsules. The interior wall humidity-controlling coating is capable of automatically controlling the indoor humidity; when the relative humidity is high, the humidity-controlling microcapsules automatically absorb and store moisture in air; when the relative humidity is low, the stored moisture is released so that the indoor humidity is maintained in an appropriate range.

Description

technical field [0001] The invention relates to a humidity-regulating material, in particular to a humidity-regulating microcapsule, a preparation method thereof and an application in an interior-wall humidity-regulating paint. Background technique [0002] Air humidity is closely related to people's lives, and the most comfortable relative humidity for the human body is 40%-70%. When the relative humidity is too high, the thermal balance of the human body is destroyed, and sweat cannot be discharged in time, making people feel chest tightness and shortness of breath, and are very prone to headaches, gastric ulcers, rashes, rheumatoid arthritis, heart disease, etc.; Evaporation speeds up, and the dry air is easy to deprive the body of moisture, making people feel dry mouth, which can easily induce pharyngitis, bronchitis, pneumonia and other diseases. In addition, food, books, works of art and precision instruments all have high requirements on air humidity. Unsuitable air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/06C08F220/56C08F220/18C08F220/28C08F2/32B01J13/14C09D133/00C09D133/12C09D133/26C09D133/02C09D133/04
Inventor 张心亚任晓琳谢德龙
Owner 广东杜威科技有限公司
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