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Preparation method of environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface

An environmentally responsive, super-hydrophobic technology, applied in paper coatings, fiber raw material treatment, liquid-repellent fibers, etc., can solve the problem of less research on the preparation of microcapsule super-hydrophobic surfaces, and achieve excellent dispersion stability and low cost. , the effect of micro-scale structure

Pending Publication Date: 2021-08-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are relatively few studies on the preparation of microcapsule superhydrophobic surfaces.

Method used

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  • Preparation method of environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface
  • Preparation method of environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface
  • Preparation method of environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1, using diethylaminoethyl methacrylate, styrene, nonafluorohexyl methacrylate, and glycidyl methacrylate as monomers, azobisisobutyronitrile as a thermal initiator, and divinylbenzene as Cross-linking agent, hexadecane as stabilizer, the above materials as oil phase, choose sodium dodecylbenzenesulfonate (SDBS) as surfactant and dissolve in deionized water as continuous phase (water phase). After fully mixing the oil phase, under the high-speed stirring of the homogenizer, drop the oil phase into the water phase to emulsify for 20 minutes. After forming a white emulsion and standing for 30min until the emulsion is stable, it is moved into a three-necked flask, and the -1 React for 8 hours under mechanical stirring, the temperature is controlled at 80°C, after centrifugation and cleaning, dry in a vacuum oven at 80°C for 24 hours, and then store in vacuum to obtain environment-responsive microcapsules;

[0037] In step one, the monomer molar ratio of diethylaminoe...

Embodiment 2

[0041] Step 1, using diethylaminoethyl methacrylate, styrene, nonafluorohexyl methacrylate, and glycidyl methacrylate as monomers, azobisisobutyronitrile as a thermal initiator, and divinylbenzene as Cross-linking agent, hexadecane as stabilizer, the above materials as oil phase, choose sodium dodecylbenzenesulfonate (SDBS) as surfactant and dissolve in deionized water as continuous phase (water phase). After fully mixing the oil phase, under the high-speed stirring of the homogenizer, drop the oil phase into the water phase to emulsify for 30 minutes. Form a white emulsion and let it stand for 30min until the emulsion is stable, then move it into a three-necked flask, -1 React for 10 hours under mechanical stirring, the temperature is controlled at 80°C, after centrifugation and cleaning, dry in a vacuum oven at 80°C for 24 hours, and then store in vacuum to obtain environment-responsive microcapsules;

[0042] In step 1, the monomer ratio of diethylaminoethyl methacrylate, ...

Embodiment 3

[0046] Step 1, using diethylaminoethyl methacrylate, styrene, nonafluorohexyl methacrylate, and glycidyl methacrylate as monomers, azobisisobutyronitrile as a thermal initiator, and divinylbenzene as Cross-linking agent, hexadecane as stabilizer, the above materials as oil phase, choose sodium dodecylbenzenesulfonate (SDBS) as surfactant and dissolve in deionized water as continuous phase (water phase). After fully mixing the oil phase, under the high-speed stirring of the homogenizer, drop the oil phase into the water phase to emulsify for 25 minutes. After forming a white emulsion and standing for 30min until the emulsion is stable, it is moved into a three-necked flask, and the -1 React for 9 hours under mechanical stirring, the temperature is controlled at 70°C, after centrifugation and cleaning, dry in a vacuum oven at 60°C for 24 hours, and then store in vacuum to obtain environment-responsive microcapsules;

[0047] In step 1, the monomer ratio of diethylaminoethyl met...

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Abstract

The invention discloses a preparation method of an environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface. The method is specifically implemented according to the following steps: step 1, taking 2-diethylaminoethyl methacrylate, styrene, nonafluorohexyl methacrylate and glycidyl methacrylate as reaction monomers, taking azodiisobutyronitrile as a thermal initiator, taking divinyl benzene as a cross-linking agent and taking hexadecane as a stabilizer to prepare an environment-responsive microcapsule through a miniemulsion polymerization method; and step 2, ultrasonically dispersing the environment-responsive microcapsule prepared in the step 1 in deionized water to obtain a microcapsule solution, then treating the surface of the material with the microcapsule solution, padding the treated surface of the material with an aluminum sheet, and drying in a drying oven to obtain the surface of the environment-responsive super-hydrophobic-hydrophilic reversible conversion material surface. The prepared material surface can realize reversible conversion between super-hydrophobicity and hydrophilicity, and the material has better hydrophobicity and environmental response performance.

Description

technical field [0001] The invention belongs to the technical field of material surface modification, and relates to a method for preparing the surface of an environment-responsive superhydrophobic-hydrophilic reversible conversion material. Background technique [0002] Superhydrophobic material is a material whose surface has a contact angle with water greater than 150° and a rolling angle less than 10°. Its surface has strong water resistance, which makes it have good self-cleaning and moisture resistance. The excellent non-wetting properties of superhydrophobic surfaces have great application prospects in industrial production and daily life. Cotton, wood, wood-plastic, paper, concrete and other common traditional materials are widely used in production and life, but due to their obvious hygroscopic phenomenon, these materials will become mildewed if they are placed in a high-humidity environment for a long time , corrosion and other phenomena, and its dimensional stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/267D06M15/233D06M15/277D06M15/273C09D133/14C09D125/14D21H19/20D21H19/22C08F220/34C08F212/08C08F220/32C08F220/24C08F212/36D06M101/06
CPCD06M15/267D06M15/233D06M15/277D06M15/273C09D133/068D21H19/20D21H19/22C08F220/34C08F212/08C08F220/325D06M2101/06D06M2200/12C08F220/24C08F212/36C08F2500/26
Inventor 侯成敏杨佳琦钱志云严薇张杰张兴刘甜
Owner XIAN UNIV OF TECH
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