Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists; A kind of preparation method of polymer hydrophobic surface is provided; The present invention has caking property for pottery, glass, metal, plastics; Needn't use corrosive substance to destroy original basal plane and can prepare the surface with hydrophobic property, method step of the present invention is simple, is easy to popularize.
The present invention realizes through following technical scheme, the present invention includes following steps:
1. prepared polymer dispersion liquid and hydrophobic silica dispersion liquid;
Described polymer dispersion liquid is to be that the mode of concentration through ultrasonic dispersion of 20g/L~100g/L is dispersed or dissolved in the organic solvent with the mass percent with polyphenylene sulfide micro mist, polystyrene, polymethyl methacrylate or PETG;
Described hydrophobic silica dispersion liquid is to be that the mode of concentration through ultrasonic dispersion of 67g/L~100g/L is scattered in the organic solvent with the mass percent with the silicon dioxide drainage property micro mist of dimethyl silicone polymer modified and surfactant;
Said organic solvent is meant absolute ethyl alcohol, isobutanol, toluene, chloroform, N, dinethylformamide, N, a kind of in N-dimethylacetylamide, the oxolane or the anhydrous or moisture mixed solvent that it combines.
Described surfactant is polyoxyethylene groups ether, PVP, neopelex, odium stearate, alkyl trimethyl ammonium bromide.
2. with polymer dispersion liquid and hydrophobic silica dispersion liquid with volume ratio be 1: 2~1: 1 mixed evenly after, process hydrophobic coating;
3. adopt spray gun hydrophobic coating evenly to be sprayed on the basal plane that cleans up;
Described basal plane is meant the surface of pottery, glass, metal or plastic sheet.
Described even spraying is meant that through the hydrophobic coating thickness on the basal plane after the spraying be 3.2 μ m~4.2 μ m.
4. will heat-treat through the basal plane of spraying at last, the hydrophobic surface contact angle that obtains after cooling is greater than 150 °, and roll angle is less than 10 °.
Described heat treatment is meant in oven dry under 60 ℃~80 ℃ the environment and under 160 ℃~300 ℃ environment, is incubated 1.5 hours again after 0.5 hour; Perhaps directly under 60 ℃~80 ℃ environment, dried 6~8 hours.
The coating surface of gained has significant ultra-hydrophobicity after the present invention handles; And the surface color homogeneous that obtains; Stable performance is not destroyed through cleaning ultra-hydrophobicity, and preparation technology is simple and implementation cost is lower; Can be applicable to the surface of various materials, and needn't use corrosive substance to destroy original material.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is that prerequisite is implemented with technical scheme of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
(1) take by weighing 6g polyphenylene sulfide micro mist, the ultrasonic volume ratio that is scattered in is a water: absolute ethyl alcohol: among the mixed solvent 80mL of isobutanol=2: 5: 1, process polymer dispersion liquid;
(2) take by weighing the silicon dioxide drainage property micro mist of 8g dimethyl silicone polymer modified; The ultrasonic volume ratio that is scattered in is a water: absolute ethyl alcohol: among the mixed solvent 120mL of isobutanol=2: 5: 1; Add 0.5g surfactant Nonyl pheno base ether again; Sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 80mL and hydrophobic silica dispersion liquid 120mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) adopt spray gun that the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the ceramic tile of cleaning in advance and drying; Then ceramic tile is incubated 1.5 hours at 300 ℃ 80 ℃ of oven dry half an hour again; Promptly obtain having the ceramic tile of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the ceramic tile is 3.2 μ m.
As shown in Figure 1, be the water droplet enlarged photograph on the hydrophobic surface that obtains among the embodiment 1, visible this water droplet is 166 ° at the contact angle of ceramic tile surface from figure.
As shown in Figure 2, be the water droplet enlarged photograph on the hydrophobic surface that obtains among the embodiment 1, visible from figure, the tumble angle of this water droplet on hydrophobic surface is 5 °.
As shown in Figure 3; Electron scanning micrograph for the hydrophobic surface that obtains among the embodiment 1; As can be seen from the figure, form coarse surface by the fine silica powder particle agglomeration, particle grain size is not of uniform size; Nano grade particle and micron level particle exist simultaneously, and are woven into a mesh structure.
Embodiment 2
(1) take by weighing 6g polyphenylene sulfide micro mist, the ultrasonic volume ratio that is scattered in is an absolute ethyl alcohol: among the mixed solvent 60mL of isobutanol=1: 1, process polymer dispersion liquid;
(2) take by weighing the silicon dioxide drainage property micro mist of 6g dimethyl silicone polymer modified; The ultrasonic volume ratio that is scattered in is an absolute ethyl alcohol: among the mixed solvent 60mL of isobutanol=1: 1; Add 0.5g surfactant odium stearate again; Sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 60mL and hydrophobic silica dispersion liquid 60mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) with spray gun the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the steel disc of cleaning in advance and drying; Then steel disc is incubated 1.5 hours at 200 ℃ 60 ℃ of oven dry half an hour again; Promptly obtain having the steel disc of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the steel disc is 4.0 μ m.The contact angle that present embodiment prepares the hydrophobic surface of gained is 160 °, and tumbling the angle is 5 °.
Embodiment 3
(1) take by weighing 6g polyphenylene sulfide micro mist, ultrasonic being scattered in the 60mL absolute ethyl alcohol processed polymer dispersion liquid;
(2) take by weighing the silicon dioxide drainage property micro mist of 8g dimethyl silicone polymer modified; Ultrasonic being scattered in the 120mL absolute ethyl alcohol; Add 0.5g surfactant softex kw again, sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 60mL and hydrophobic silica dispersion liquid 120mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) with spray gun the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the plastic plate of cleaning in advance and drying; Then plastic plate is incubated 1.5 hours at 160 ℃ 80 ℃ of oven dry half an hour again; Promptly obtain having the plastic plate of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the plastic plate is 3.8 μ m.The contact angle that present embodiment prepares the hydrophobic surface of gained is 155 °, and tumbling the angle is 5 °.
Embodiment 4
(1) take by weighing the 0.6g granules of polystyrene, ultrasonic dissolution is processed polymer dispersion liquid in 30mL toluene.
(2) take by weighing the silicon dioxide drainage property micro mist of 3g dimethyl silicone polymer modified; Ultrasonic being scattered in the 30mL toluene; Add 0.5g surfactant PVP again, sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 30mL and hydrophobic silica dispersion liquid 30mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) with spray gun the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the sheet glass of cleaning in advance and drying, then sheet glass was dried 8 hours at 60 ℃, promptly obtain having the sheet glass of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the sheet glass is 3.5 μ m.The contact angle that present embodiment prepares the hydrophobic surface of gained is 152 °, and roll angle is 6 °.
Embodiment 5
(1) take by weighing the 0.4g poly methyl methacrylate particle, ultrasonic dissolution is processed polymer dispersion liquid in the 20mL chloroform;
(2) take by weighing the silicon dioxide drainage property micro mist of 4g dimethyl silicone polymer modified; Ultrasonic being scattered in the 40mL chloroform; Add 0.5g surfactant Nonyl pheno base ether again, sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 20mL and hydrophobic silica dispersion liquid 40mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) with spray gun the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the sheet glass of cleaning in advance and drying, then sheet glass was dried 6 hours at 60 ℃, promptly obtain having the sheet glass of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the sheet glass is 4.2 μ m.The contact angle that present embodiment prepares the hydrophobic surface of gained is 158 °, and roll angle is 5 °.
Embodiment 6
(1) take by weighing 0.5g PETG particle, ultrasonic dissolution is processed polymer dispersion liquid in the 30mL chloroform;
(2) take by weighing the silicon dioxide drainage property micro mist of 4g dimethyl silicone polymer modified; Ultrasonic being scattered in the 30mL chloroform; Add 0.5g surfactant Nonyl pheno base ether again, sonicated made it to be uniformly dispersed in 5 minutes, processed the hydrophobic silica dispersion liquid;
(3) polymer dispersion liquid 30mL and hydrophobic silica dispersion liquid 30mL are mixed, sonicated made it to be uniformly dispersed in 5 minutes again, processed hydrophobic coating;
(4) with spray gun the pressure of hydrophobic coating with 0.2MPa is sprayed onto on the ceramic tile of cleaning in advance and drying, then ceramic tile was dried 8 hours at 60 ℃, promptly obtain having the ceramic tile of super-hydrophobic coat after the cooling, the hydrophobic coating thickness on the ceramic tile is 4.0 μ m.The contact angle that present embodiment prepares the hydrophobic surface of gained is 157 °, and roll angle is 5 °.