A kind of preparation method of crosslinking type highly hydrophobic nano polymer coating

A nano-polymer, cross-linked technology, applied in coatings and other directions, can solve the problems of lack of thermal stability and solvent resistance, complex processing technology, etc., achieve excellent storage, mature process, improve heat resistance and The effect of solvent resistance

Active Publication Date: 2018-04-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many hydrophobic coatings require sophisticated equipment or complicated processing techniques, and unfortunately, they are still lacking in thermal stability and solvent resistance

Method used

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  • A kind of preparation method of crosslinking type highly hydrophobic nano polymer coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] After mixing butyl acrylate, styrene and N,N-methylenebisacrylamide in a mass ratio of 4:4:2, they were added to water together with 1% of the total mass of surfactant, and the monomer concentration was the total 20% of the mass, fully dispersed evenly to play the role of pre-emulsification. Ammonium persulfate was added at 70°C, and the reaction was stirred for 8 hours. After the reaction, cool to room temperature, centrifuge to change the medium from water to ethanol, and repeat the process 3 times, each time to ensure that the polymer microspheres are fully dissolved in the newly replaced medium under the condition of ultrasound. Spin-coating the coating onto a clean glass plate results in a highly hydrophobic coating with good thermal stability and solvent resistance.

Embodiment 2

[0020] After mixing butyl acrylate, styrene and ethylene glycol dimethacrylate in a mass ratio of 5:4:1, they are added to water together with 2% of the total mass of surfactant, and the monomer concentration is 1% of the total mass. 20%, fully dispersed evenly to play the role of pre-emulsification. Potassium sulfate was added at 40°C, and the reaction was stirred for 24 hours. After the reaction, cool down to room temperature, centrifuge to change the medium from water to chlorinated hydrocarbon, and repeat this process 3 times, each time to ensure that the polymer microspheres are fully dissolved in the newly replaced medium under the condition of ultrasound. The coating is cast onto clean paper to form a highly hydrophobic coating with good thermal stability and solvent resistance.

Embodiment 3

[0022] After mixing butyl acrylate, styrene and ethylene glycol dimethacrylate in a mass ratio of 5:4:2, they are added to water together with 1.5% of the total mass of surfactant, and the monomer concentration is 1% of the total mass. 20%, fully dispersed evenly to play the role of pre-emulsification. Potassium sulfate was added at 40°C, and the reaction was stirred for 16 hours. After the reaction, cool to room temperature, centrifuge to change the medium from water to acetone, and repeat the process 3 times, each time to ensure that the polymer microspheres are fully dissolved in the newly replaced medium under the condition of ultrasound. Coatings are applied by spin coating onto clean plastics to form highly hydrophobic coatings with good thermal stability and solvent resistance.

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Abstract

The invention relates to a method for preparing a cross-linked highly hydrophobic nano-polymer coating, which belongs to the field of functional polymer coatings. First, in the water system, the monomer mixture composed of monovinyl monomer and multifunctional monomer is initiated by the water-soluble initiator at 30-80°C by emulsion polymerization, and the polymer microspheres with a particle size of nanometer are prepared. ; Then convert the water in the above system into an organic solvent at room temperature, so that the nano-scale polymer microspheres are fully dispersed in the organic solvent to obtain a coating, and finally the coating is cast on the base material by casting or spin coating Form a cross-linked highly hydrophobic nano-polymer coating layer; this coating has good performance in heat resistance and solvent resistance, and does not need to contain fluorine and silicon, and is also very superior in hydrophobicity, which can reach 130 °. In addition, the film It can also remain transparent at a certain thickness. In addition, it also has the advantages of economical and easy access to raw materials, low requirements for production equipment, and no special construction conditions.

Description

technical field [0001] The invention belongs to the field of functional polymer coatings, in particular to cross-linked highly hydrophobic polymer nano coatings with relatively high thermal stability and solvent resistance. Background technique [0002] Traditional polymer coatings can play the role of marking, beautification, anti-corrosion and insulating barriers. However, with the advancement of science and technology and the improvement of people's quality of life, the research and development trend of polymer coatings has also begun to tend to be economical and functional. . Hydrophobic polymer coatings have always been a hot topic in the field of coating functionalization research because of their low wettability, antifouling and anti-icing characteristics. However, the hydrophobic coatings currently reported generally need to introduce silicone or fluorine components, which makes the final product expensive and does not meet the needs of economy. [0003] Referring ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C08F212/08C08F220/18C08F222/38C08F222/14C08F212/36C08F220/58C08F2/22
CPCC09D133/04C08F2/22C08F212/08C08F220/18C08F220/1804C08F222/145C08F222/385C08F212/36C08F220/58
Inventor 王忠刚王泽锋叶维维骆新然
Owner DALIAN UNIV OF TECH
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