Method for synthesis of organic-inorganic composite hydrophobic/oleophobic surface treatment agent

Abstract

The invention relates to synthesis of hydrophobic / oleophobic surface treatment agents, and aims at providing a method for synthesis of an organic-inorganic composite hydrophobic / oleophobic surface treatment agent. The method comprises the following steps of carrying out ultrasonic vibration treatment on a mixture of at least one titanium alkoxide and glycol to obtain titanium-containing organic polymer particles, dispersing the titanium-containing organic polymer particles in water and ethanol to carry out water-bath treatment, carrying out centrifugation to obtain submicron titanium dioxide particles with a certain surface roughness, carrying out ultrasonic vibration treatment of the submicron titanium dioxide particles in ethanol, carrying out modification by at least one silane coupling agent, mixing the modified submicron titanium dioxide particles with at least one fluorine-containing monomer, at least one acrylate organic matter and azodiisobutyronitrile, after a reaction in a water bath, adding dropwisely an ammonium persulfate aqueous solution into the reaction system, and cooling to obtain the organic-inorganic composite hydrophobic / oleophobic surface treatment agent. Themethod greatly improves hydrophobicity and lipophobicity of the organic-inorganic composite hydrophobic / oleophobic surface treatment agent, and realizes a hydrophobic angle of 160 degrees and an oil-repellent level of 7. Through a cooperation enhancement effect produced by a surface structure, a fluorine-containing monomer use amount is reduced; a production cost is reduced; and adverse influences caused by overuse of fluorine-containing polymers on fabric softness are avoided effectively.

Description

technical field [0001] The invention relates to the synthesis of a hydrophobic / oleophobic surface treatment agent, in particular to a synthesis method of an organic-inorganic composite hydrophobic / oleophobic surface treatment agent. Background technique [0002] Surface treatment is an important technical means to endow materials with new properties. Among them, fluorine-containing polymer emulsion is used to treat the substrate, and the low surface energy characteristics of fluorine-containing substances can effectively enhance the hydrophobic and oleophobic properties of the substrate, thereby improving The substrate has the properties of stain resistance, water resistance and corrosion resistance, and has been widely used in fabrics, stone, wood and other fields. At present, the main component of fluorine-containing treatment agents on the market is fluorine-containing acrylate emulsion. For example, Chinese patent CN1958937A discloses a fluorine-containing fabric finishi...

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Problems solved by technology

At present, the main component of fluorine-containing treatment agents on the market is fluorine-containing acrylate emulsion. For example, Chinese patent CN1958937A discloses a fluorine-containing fabric finishing agent emulsion with excellent water repellency. Oil-repellent finishing agent, but the contact angle to water is still below 150°, and no super-hydrophobic surface has been formed, and its hydrophobic and oleophobic properties need to be further improved

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