Preparation method of super-amphiphobic coating with stable sea-island structure

Abstract

The invention discloses a preparation method of a'sea-island 'structure stable super-amphiphobic coating, which comprises the following steps: firstly, synthesizing polymer binder microparticles by a non-solvent induced phase separation method, and coating functionalized nanoparticles on the surfaces of the polymer binder microparticles to construct composite microparticles with a'core-shell' structure as an'island 'structure; a micro-nano composite structure required by the super-amphiphobic coating is provided, the surface energy is low, and the mechanical stability of the coating is preliminarily improved; and then an FEVE binder is introduced as a'sea ', so that the'island' is effectively anchored on the surface of the base material, and the mechanical stability of the coating is further improved. The micro-nano structure and the chemical composition of the coating are regulated and controlled by regulating and controlling the proportion of all the components, and the super-amphiphobic coating with the stable sea-island structure is prepared. Through the synergistic effect of the two binders, the coating has excellent mechanical stability and super-amphiphobic property.

Description

Technical field

[0001] The present invention relates to a method for preparing an ultra-double-thinned coating, in particular to a "sea - island" structurally stable preparation method for ultra-double-thinn coating, which belongs to the field of ultra-double-thinned coating preparation technology. Background

[0002] Due to the synergistic effect of the surface micro-nano composite structure and low surface energy, the ultra-double thinning coating has a high contact angle (≥150°) and a lower rolling angle (≤10°) for water, oil and other low surface energy liquids. Due to their unique wettability, ultra-double-thinning coatings have a wide range of application prospects in the field of anti-icing, anti-corrosion and self-cleaning. However, at present, the ultra-double thin coating has not yet been effectively applied to actual production and life, the main reason is that its mechanical stability is poor, which greatly limits its practical application. Therefore, effectively impr...

Examples

Embodiment 1

[0025] (1) 12g of hydrophilic silica nanoparticles dispersed into 440mL ethanol, stirred for 10min after ultrasonic dispersion for 5min, followed by 60mL of ammonia stirred for 5min, added 14g of perfluorodecyl trimethoxysilane, reacted at room temperature for 2h, centrifuged, dried, crushed and set aside.

[0026] (2) 2g of ABS polymer binder was dissolved in 8g of butyl acetate, and then 4g of ethanol was added drop by drop under room temperature stirring conditions to make it undergo non-solvent phase separation to form ABS binder microparticle dispersion.

[0027] (3) The 1g silica fluoride nanoparticles were dispersed into the ABS binder microparticle dispersion liquid, stirred for 1h and assisted by ultrasonic dispersion for 10min to obtain the "core-shell" structure of the ABS polymer binder @ silica fluoride particle dispersion.

[0028] (4) The 1g FEVE binder was added to the ABS polymer binder @ silica fluoride microparticle dispersion liquid of the "core-shell" structure ...

Embodiment 2

[0032] (1) 9g of hydrophilic silica nanoparticles were dispersed into 470mL ethanol, stirred for 10min and then ultrasonically dispersed for 5min, followed by 30mL of ammonia stirred for 5min and then added 16g of perfluorodecyltriethoxysilane, reacted at room temperature for 4h, the resulting suspension was centrifuged, dried, and crushed for backup.

[0033] (2) 2g of ABS polymer binder was dissolved in 8g of butyl acetate, and then 4g of ethanol was added drop by drop under room temperature stirring conditions to make it undergo non-solvent phase separation to form ABS binder microparticle dispersion.

[0034] (3) The 1g silica nanoparticles prepared are dispersed into the ABS binder microparticle dispersion, stirred for 1h and assisted by ultrasonic dispersion for 10min to obtain the "core - shell" structure of the ABS polymer binder @ silica fluoride microparticle dispersion.

[0035] (4) The 1.5gFEVE binder was added to the ABS polymer binder @ silica fluoride microparticle ...

Embodiment 3

[0039](1) 18g of hydrophilic silica nanoparticles dispersed into 490mL ethanol, stirred for 10min after ultrasonic dispersion for 5min, followed by 10mL of ammonia stirring for 5min, added 30g of perfluorodecyltriethoxysilane, reacted at room temperature for 4h, and then centrifuged, dried, crushed and set aside.

[0040] (2) The 2g ABS polymer binder was dissolved in 8g of ethyl acetate / butyl acetate mixed solvent, and then 6g of methanol was added drop by drop under the condition of room temperature stirring, so that non-solvent phase separation occurred to form abS binder microparticle dispersion.

[0041] (3) The 1.2g silica nanoparticles prepared are dispersed into the ABS binder microparticle dispersion liquid, stirred for 1h and assisted by ultrasonic dispersion for 10min to prepare the "core-shell" structure of THE ABS polymer binder @ silica fluoride microparticle dispersion.

[0042] (4) The 1gFEVE binder was added to the ABS polymer binder @ fluorinated silica micropa...

Technical field

[0001] The present invention relates to a method for preparing an ultra-double-thinned coating, in particular to a "sea - island" structurally stable preparation method for ultra-double-thinn coating, which belongs to the field of ultra-double-thinned coating preparation technology. Background

[0002] Due to the synergistic effect of the surface micro-nano composite structure and low surface energy, the ultra-double thinning coating has a high contact angle (≥150°) and a lower rolling angle (≤10°) for water, oil and other low surface energy liquids. Due to their unique wettability, ultra-double-thinning coatings have a wide range of application prospects in the field of anti-icing, anti-corrosion and self-cleaning. However, at present, the ultra-double thin coating has not yet been effectively applied to actual production and life, the main reason is that its mechanical stability is poor, which greatly limits its practical application. Therefore, effectively impr...

Examples

Embodiment 1

[0025] (1) 12g of hydrophilic silica nanoparticles dispersed into 440mL ethanol, stirred for 10min after ultrasonic dispersion for 5min, followed by 60mL of ammonia stirred for 5min, added 14g of perfluorodecyl trimethoxysilane, reacted at room temperature for 2h, centrifuged, dried, crushed and set aside.

[0026] (2) 2g of ABS polymer binder was dissolved in 8g of butyl acetate, and then 4g of ethanol was added drop by drop under room temperature stirring conditions to make it undergo non-solvent phase separation to form ABS binder microparticle dispersion.

[0027] (3) The 1g silica fluoride nanoparticles were dispersed into the ABS binder microparticle dispersion liquid, stirred for 1h and assisted by ultrasonic dispersion for 10min to obtain the "core-shell" structure of the ABS polymer binder @ silica fluoride particle dispersion.

[0028] (4) The 1g FEVE binder was added to the ABS polymer binder @ silica fluoride microparticle dispersion liquid of the "core-shell" structure ...

Embodiment 2

[0032] (1) 9g of hydrophilic silica nanoparticles were dispersed into 470mL ethanol, stirred for 10min and then ultrasonically dispersed for 5min, followed by 30mL of ammonia stirred for 5min and then added 16g of perfluorodecyltriethoxysilane, reacted at room temperature for 4h, the resulting suspension was centrifuged, dried, and crushed for backup.

[0033] (2) 2g of ABS polymer binder was dissolved in 8g of butyl acetate, and then 4g of ethanol was added drop by drop under room temperature stirring conditions to make it undergo non-solvent phase separation to form ABS binder microparticle dispersion.

[0034] (3) The 1g silica nanoparticles prepared are dispersed into the ABS binder microparticle dispersion, stirred for 1h and assisted by ultrasonic dispersion for 10min to obtain the "core - shell" structure of the ABS polymer binder @ silica fluoride microparticle dispersion.

[0035] (4) The 1.5gFEVE binder was added to the ABS polymer binder @ silica fluoride microparticle ...

Embodiment 3

[0039](1) 18g of hydrophilic silica nanoparticles dispersed into 490mL ethanol, stirred for 10min after ultrasonic dispersion for 5min, followed by 10mL of ammonia stirring for 5min, added 30g of perfluorodecyltriethoxysilane, reacted at room temperature for 4h, and then centrifuged, dried, crushed and set aside.

[0040] (2) The 2g ABS polymer binder was dissolved in 8g of ethyl acetate / butyl acetate mixed solvent, and then 6g of methanol was added drop by drop under the condition of room temperature stirring, so that non-solvent phase separation occurred to form abS binder microparticle dispersion.

[0041] (3) The 1.2g silica nanoparticles prepared are dispersed into the ABS binder microparticle dispersion liquid, stirred for 1h and assisted by ultrasonic dispersion for 10min to prepare the "core-shell" structure of THE ABS polymer binder @ silica fluoride microparticle dispersion.

[0042] (4) The 1gFEVE binder was added to the ABS polymer binder @ fluorinated silica micropa...

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