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Preparation method for phase-separation induced porous super-hydrophobic coating material

A super-hydrophobic coating and phase separation technology, applied in the direction of coating, can solve the problems of cumbersome preparation process, harsh process conditions, insufficient high temperature resistance, etc., and achieve the effect of simple preparation process, low cost, and enhanced weather resistance.

Inactive Publication Date: 2016-03-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing superhydrophobic coatings mainly include phase separation method, sol-gel method, template method, electrochemical deposition method, self-assembly method and vapor deposition method, etc., although many superhydrophobic coating preparation methods have become mature. , but the preparation process of most superhydrophobic products is cumbersome, the process conditions are harsh, some require expensive low surface energy materials or the prepared superhydrophobic surface has insufficient durability, chemical resistance, wear resistance and high temperature resistance. , which limits its wide application in real life production

Method used

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  • Preparation method for phase-separation induced porous super-hydrophobic coating material
  • Preparation method for phase-separation induced porous super-hydrophobic coating material
  • Preparation method for phase-separation induced porous super-hydrophobic coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Weigh hexafluorobutyl methacrylate (G02), ethylene glycol dimethacrylate (EDMA), 1,4-butanediol (BDO) and N-methyl-2 -pyrrolidone (NMP) (where m (G02) :m (EDMA) =50:50,m (G02+EDMA) :m (BDO+NMP) =50:50,m (BDO) :m (NMP) Take 35:65, 40:60, 45:55, 50:50, 60:40 series ratio respectively, m (G02+EDMA) +m (BDO+NMP) 6g), azobisisobutyronitrile (AIBN) 2% (relative to the total mass of polymerized monomers) in a 25mL beaker;

[0026] 2) Place the beaker in step 1) in an ultrasonic cleaner for 30 minutes of ultrasonic treatment until a uniform and transparent solution is formed;

[0027] 3) Take 0.2mL of the solution in step 2) and inject it between the pretreated glass substrate and the polytetrafluoroethylene plate to obtain the sample;

[0028] 4) Place the sample prepared in step 3) in a blast drying oven, set the temperature at 80°C, heat-initiate the polymerization reaction for 20 hours, end the reaction, and cool to room temperature;

[0029] 5) Separate the gla...

Embodiment 2

[0031] 1) Weigh a certain amount of hexafluorobutyl methacrylate (G02), ethylene glycol dimethacrylate (EDMA), 1,4-butanediol (BDO) and N-methacrylate in sequence according to a certain mass ratio Base-2-pyrrolidone (NMP) (where m (BDO) : (NMP) =40:60, m (G02+EDMA) :m (BDO+NMP) =50:50, m （G02） :m （EDMA） Take the ratio of 40:60, 45:55, 55:45, 60:40, 65:35 series, m (G02+EDMA)+m (BDO+NMP) 6g), azobisisobutyronitrile (AIBN) 2% (relative to the total mass of polymerized monomers) in a 25mL beaker;

[0032] 2) Place the beaker in step 1) in an ultrasonic cleaner for 30 minutes of ultrasonic treatment until a uniform and transparent solution is formed;

[0033] 3) Take 0.2mL of the solution in step 2) and inject it between the pretreated glass substrate and the polytetrafluoroethylene plate to obtain the sample;

[0034] 4) Place the sample prepared in step 3) in a blast drying oven, set the temperature at 80°C, heat-initiate the polymerization reaction for 20 hours, end the...

Embodiment 3

[0037] 1) Weigh a certain amount of hexafluorobutyl methacrylate (G02), ethylene glycol dimethacrylate (EDMA), 1,4-butanediol (BDO) and N-methacrylate in sequence according to a certain mass ratio Base-2-pyrrolidone (NMP) (where m (G02) :m (EDMA) =60:40,m (BDO) :m (NMP) =40:60, m (G02+EDMA) :m (BDO+NMP) =45:55, m (G02+EDMA) +m (BDO+NMP) 6g), azobisisobutyronitrile (AIBN) 2% (relative to the total mass of polymerized monomers) in a 25mL beaker;

[0038] 2) Place the beaker in step 1) in an ultrasonic cleaner for 30 minutes of ultrasonic treatment until a uniform and transparent solution is formed;

[0039] 3) Take 0.2mL of the solution in step 2) and inject it between the pretreated glass substrate and the polytetrafluoroethylene plate to obtain the sample;

[0040] 4) Place the sample prepared in step 3) in a blast drying oven, set the temperature at 80°C, heat-initiate the polymerization reaction for 20 hours, end the reaction, and cool to room temperature;

[0041] ...

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Abstract

The invention discloses a preparation method for a phase-separation induced porous super-hydrophobic coating material. According to the method, by adopting hexafluorobutyl methacrylate (G02) and ethylene glycol dimethacrylate (EDMA) as polymeric monomers, 1,4-butanediol (BDO) and N-methyl-2-pyrrolidone (NMP) as co-porogens and azodiisobutyronitrile (AIBN) as an initiator, in-situ thermal initiation free radical polymerization is carried out on a glass substrate; phase separation induced by the porogens in the polymerization process is used to construct a micro / nano binary coarse structure on coating surface or bulk phase; and the microstructure of a coating is adjusted by changing the composition of a reaction mixture, thereby preparing the porous polymer coating with the super-hydrophobic property. The method does not need any technological operations such as coating decoration; the preparation process is simple; the cost is low; and the prepared super-hydrophobic coating can be widely applied to the fields of self-cleaning, oil-water separation, fluid drag reduction, metal corrosion prevention and the like.

Description

technical field [0001] The invention relates to the field of preparation of superhydrophobic materials, in particular to a method for preparing a phase separation-induced porous superhydrophobic coating material. Background technique [0002] A superhydrophobic surface refers to a surface with a static contact angle of greater than 150° and a rolling angle of less than 10° with water. When the water droplets come into contact with the super-hydrophobic surface, they can easily roll down and at the same time, can take away the dust and dirt on the surface. Surfaces with superhydrophobic properties have broad application prospects in real life and production, such as self-cleaning, oil-water separation, fluid drag reduction, and metal anti-corrosion. Superhydrophobic is a manifestation of the wettability of solid surfaces, which is determined by the chemical composition and microscopic geometric structure of the surface. Superhydrophobic surfaces can be prepared by two method...

Claims

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Application Information

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IPC IPC(8): C08F220/22C08F222/14C08J9/28C09D133/16C09D135/02
CPCC08F220/22C08F222/1006C08F222/102C08J9/28C08J2201/0522C08J2333/16C08J2335/02C09D133/16C09D135/02
Inventor 肖新颜谢玮
Owner SOUTH CHINA UNIV OF TECH
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