Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of alumina-polystyrene hydrophobic coating

A technology of polystyrene and hydrophobic coating, which is applied in coatings, devices for coating liquid on the surface, etc., can solve the problems of poor durability and stability, and achieve the effect of coating stability

Inactive Publication Date: 2019-01-25
ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although hydrophobic materials have shown excellent properties and great application prospects in the above aspects, because the artificially prepared hydrophobic surface is different from the hydrophobic surface in nature, its durability and stability are relatively poor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The invention discloses a method for preparing an alumina-polystyrene hydrophobic coating, which comprises the following steps:

[0021] (1) Dissolve aluminum isopropoxide in isopropanol, ultrasonically disperse it evenly, then slowly add a mixture of isopropanol and distilled water with a volume ratio of 3:1, adjust the pH value to 3-4, Stir and reflux at 80°C for 3-8 hours to obtain alumina sol;

[0022] (2) Add a certain amount of distilled water, dispersant and catalyst to the above-mentioned alumina sol and mix evenly, stir at a speed of 50-100r / min for 1-3h, and then, under the condition of magnetic stirring at 30-50°C, add to the obtained colloid Add a certain amount of polystyrene emulsion into the solution, then add a curing agent, adjust the pH value to 4-6, and stir for 1-2 hours to obtain an alumina-polystyrene composite sol;

[0023] (3) Immerse the pretreated steel plate in the above-mentioned alumina-polystyrene composite sol, and coat it by dipping and ...

Embodiment 1

[0029] (1) Dissolve aluminum isopropoxide in isopropanol, ultrasonically disperse it evenly, then slowly add a mixture of isopropanol and distilled water at a volume ratio of 3:1, adjust the pH to 3, and stir at 60°C Reflux for 3h to obtain an alumina sol with a concentration of 30g / L;

[0030] (2) Add a certain amount of distilled water, dispersant sodium dodecylsulfonate and catalyst ammonia water to the above-mentioned alumina sol, mix evenly, stir at a speed of 50r / min for 1h, and then, under the condition of magnetic stirring at 30°C, Add a certain amount of polystyrene emulsion to the obtained colloidal solution, then add curing agent KH-550, adjust the pH value to 4, and stir for 1 hour to obtain an alumina-polystyrene composite sol, wherein the alumina-polystyrene In the composite sol, the mass ratio of alumina and polystyrene is 2:1;

[0031] (3) Immerse the pretreated steel plate in the above-mentioned alumina-polystyrene composite sol, and coat it by dipping and pu...

Embodiment 2

[0033] (1) Dissolve aluminum isopropoxide in isopropanol, ultrasonically disperse it evenly, then slowly add a mixture of isopropanol and distilled water with a volume ratio of 3:1, adjust the pH value to 3.5, and stir at 70°C Reflux for 5h to obtain an alumina sol with a concentration of 40g / L;

[0034] (2) Add a certain amount of distilled water, dispersant sodium dodecylsulfonate and catalyst ammonia water to the above-mentioned alumina sol, mix evenly, stir at a speed of 80r / min for 2h, and then, under the condition of magnetic stirring at 40°C, Add a certain amount of polystyrene emulsion to the obtained colloidal solution, then add curing agent KH-550, adjust the pH value to 5, and stir for 1.5 hours to obtain an alumina-polystyrene composite sol, wherein the alumina-polystyrene In the ethylene composite sol, the mass ratio of alumina and polystyrene is 2.5:1;

[0035] (3) Immerse the pretreated steel plate in the above-mentioned alumina-polystyrene composite sol, and c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an alumina-polystyrene hydrophobic coating. The preparation method includecomprises the following steps: (1) dissolving aluminum isopropoxide in isopropanol, ultrasonically dispersing the aluminum isopropoxide uniformly, slowly dropwise adding mixed liquid of isopropanol and distilled water, in which the volume ratio of the isopropanol to the distilled water is 3:1, adjusting the pH to (3 to 4), and performing stirring for reflux at the temperature of 60-80 DEG C for 3-8 h to obtain alumina sol; (2) adding a certain amount of distilled water, dispersing agents and catalysts into the alumina sol before uniform mixing, stirring the mixture at the rotation speed of 50-100 r / min for 1-3 h, adding a certain amount of polystyrene emulsions into theobtained colloidal solution under the condition of magnetic stirring at the temperature of 30-50 DEG C, adding curing agents, adjusting the pH to 4-6, and stirring the mixture for 1-2 h to obtain alumina-polystyrene composite sol; (3) soaking a pretreated steel sheet in the alumina-polystyrene composite sol, performing film coating through steeping and pulling, performing drying at the room temperature for 20-30 min after 3-5 times of pulling, and performing drying at a certain temperature for 20-30 min to obtain the alumina-polystyrene hydrophobic coating.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to a preparation method of an alumina-polystyrene hydrophobic coating. Background technique [0002] The wettability of the material surface depends on the surface chemical properties and microstructure of the material. The so-called superhydrophobic surface refers to the surface with a contact angle with water greater than 150°, and a rolling angle less than 10°. Due to the wide application prospects of hydrophobic materials in waterproof, anti-fog, anti-snow, anti-pollution, anti-adhesion, anti-oxidation, anti-corrosion, self-cleaning, and prevention of current conduction, they have attracted extensive attention from material science researchers. [0003] Although hydrophobic materials have shown excellent properties and great application prospects in the above aspects, because the artificially prepared hydrophobic surface is different from the hydrophobic surface in n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D125/06C09D7/61B05D7/24B05D7/14
CPCB05D7/14B05D7/24C08K2003/2227C09D125/06C09D7/61C08K3/22
Inventor 陆磊
Owner ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV