293results about How to "Improve hydrophobicity and oleophobicity" patented technology

The present invention belongs to the field of mnacromolecule, relating to the fluorine-containing polyester of low surface energy and the preparation method of the fluorine-containing polyester. The polyester has the following chemical structure (1): wherein R _f C _{is the straight chain of 2} - 21 C or the branch-chain pseudo-perfluoroalkyl; R₁, R₂ is the alkyl, aryl, or naphthenic base of the C₁-C₈; E is -(CH₂) _m-; formula (3) or formula (4); R' is H or the straight chain or the branch-chain alkyl under C₄; m is an integer between 0 or 10. The polyester preparation method is that dibasic acid or the correspondent diester, dihydric alcohol and perfluoroalkane, which are 0.05 percent to 10 percent of the total material weight, are fused and polymerized under vacuum condition. The polyester preparation method at the pseudo-perfluoroalkyl sealed end is simple, and is of good drainage and oil dredging properties. The present invention can be widely used in antifouling coatings, and is of important development and application value.

The invention discloses a super-hydrophobic and oleophobic composite coating which comprises a super-hydrophobic and oleophobic primer coat layer and a super-hydrophobic and oleophobic finishing coat layer. The coating is characterized in that the super-hydrophobic and oleophobic finishing coat layer is located on the super-hydrophobic and oleophobic primer coat layer; the super-hydrophobic and oleophobic primer coat layer is coated by a super-hydrophobic and oleophobic primer coat which is a composition containing epoxy resin, an auxiliary A, extinction powder and a solvent; the super-hydrophobic and oleophobic finishing coat layer is coated by a super-hydrophobic and oleophobic finishing coat which is a composition containing fumed silica, an auxiliary B, an auxiliary C, a mixed solution A and a mixed solution B. Compared with the prior art, the super-hydrophobic and oleophobic composite coating disclosed by the invention not only has a super-hydrophobic performance, but also can resist greasy dirt and has a super-oleophobic performance as well as good wear resistance and stability; the preparation process is simple, and realization of industrialized production is facilitated.

The invention discloses a water and oil repellency surface microstructure which comprises a substrate and a T type micro-nanometer structure etched on the substrate, wherein the T type micro-nanometer structure comprises a vertical part and a transverse part which is arranged at the top end of the vertical part. A manufacturing technology of a water and oil repellency surface comprises the steps of substrate cleaning, mask pattern transfer, XeF2 gaseous phase etching process or DRIE (Deep Reactive Ion Etching) etching process, chemical vapor deposition or perfluorination silane monomer self-assembly, thereby the water and oil repellency surface microstructure with high mechanical stability, good technology repeatability and controlled geometric structure is obtained.

The present invention fabricates a hydrophobic and oleophobic polymer fabric through two stages of modification using atmospheric plasmas. The modified fabric has a rough surface and a fluorocarbon functional group having the lowest surface free energy. The fabric has a grafted fluorocarbon monomer layer to enhance the graft efficiency of the fluorocarbon functional groups and its wash fastness. The atmospheric plasmas can be mass produced and less expensively. Hence, the present invention can rapidly modify surfaces of polymeric materials with low cost and good environment protection.

The invention discloses a fluorine-containing resin emulsion and a preparation method thereof. The fluorine-containing monomer structures are shown in (FA1), (FA2) and (FA3), wherein Rf is a C2-C21 linear or branched fluoroalkyl or perfluoroalkyl; R1 is a hydrogen atom or C1-C8 linear or branched alkyl; and R2 is C1-C20 linear or branched alkyl. The fluorine-containing resin emulsion is prepared by using the vinyl monomer copolymer as a nucleus, using the fluorine-containing monomer copolymer as a shell and adopting the nucleus-shell emulsion copolymerization technology. The fluorine-containing resin emulsion can be widely used for anti-corrosion and anti-pollution paint, such as prevention of corrosion of bridge buildings and prevention of corrosion and pollution of ships, can also be used in fields, such as functional finishing of fiber surfaces, prevention of water and oil of leather and the like, and has significant development value and application value.

The invention discloses fluorinated hyperbranched polyester acrylate and a preparation method thereof. Fluoride-alcohol and hydroxy acrylate are chosen to react with diisocyanate respectively to achieve two semi-additive products, and the two semi-additive products in proper proportions are used to react with hydroxyl-terminated hyperbranched polymer, to achieve hyperbranched polymer fluorine terminated bases with acrylic acid ester base groups and halothane base groups linked to the hyperbranched molecular framework through carbamate base groups as well as acrylic acid modified hyperbranched polymer. The iso-cyan acid radical reaction of the method has high activity, the Fluoro-alcohol conversion rate is high, the raw materials are cheap and easy to obtain, the operation is easy, and capable of facilitating industrial production. The fluoric hyperbranched polyester acrylate achieved by the method can be applied to ultraviolet-light solidification coating, the achieved coating has sound hydrophobic and oleophobic performances, and the industrial application is very broad.

The invention provides a hydrophobic olephobic epoxy paint and its preparation and application method. The paint is prepared by mixing the following raw materials according to the mass ratio of epoxy paint for color coding: fluorine-silicon copolymer: a mixed solvent: nanometer silica: a curing agent = 1.0 : 0.005-0.12 : 0.5-3.0 : 0-0.30 : 0.01-0.25. An epoxy coating formed by the paint has a microscopic rough structure, overcomes the disadvantage of poor compatibility of an epoxy paint modified by a fluorine-silicon material, and has a water contact angle of 149 degrees and an oil contact angle of 101 degrees, being an epoxy coating with strong hydrophobicity and olephobicity.

The invention relates to an anti-glare anti-reflection optical film, and a preparation method and an application of the anti-glare anti-reflection optical film. The anti-glare anti-reflection optical film comprises a transparent support body and an anti-glare anti-reflection hard film coating at least coating one surface of the transparent support body. The anti-glare anti-reflection hard film coating comprises a low-refractive-index material and a high-refractive-index material, the refractive index difference between the two materials is 0.01 or more, and the surface energy difference is 4 mN/m or more. The low-refractive-index material comprises fluorosilicone compound modified hollow silicon dioxide particles and fluorinated acrylate, and has a refractive index ranging from 1.10 to 1.45. The high-refractive-index material comprises high-refractive-index UV curing resin, a reactive diluents and high-refractive-index transparent fine particles, and has a refractive index ranging 1.46 to 2.00. The anti-glare anti-reflection optical film is formed by adopting a one-time coating method, has anti-fouling and anti-scratching performance, has high definition, and can be applied to surface protection of various types of flat-panel display polarizing plates or display screens.

A water and oil repellent composition which can impart an excellent water and oil repellency to an object, even if it is processed at a low temperature, and which can achieve a water and oil repellent treatment providing a soft hand. The water and oil repellent composition which has as an essential component a copolymer consisting essentially of polymerized units of the following monomer (a) and polymerized units of the following monomer (b). monomer (a) : an R<f> monomer wherein the melting point of fine crystals derived from the R<f> groups of the homopolymer does not exist or is at most 50 DEG C. monomer (b) : a monomer having no R<f> group, wherein the melting point of fine crystals derived from the side chains of the homopolymer is at least 30 DEG C.

The invention discloses perfluoroalkyl group phosphate ester acrylic ester and a method for making the same. The method comprises the following steps that: firstly, a fluoro-alcohol compound is reacted with phosphorus oxychloride and then is reacted with dibastic alcohol so as to synthesize perfluoroalkyl group phosphate ester; then, the acrylated treatment of the perfluoroalkyl group phosphate ester is carried out, or the perfluoroalkyl group phosphate ester is directly added in dibastic alcohol containing acrylic acid double bond so as to obtain perfluoroalkyl group radical which is connected with acrylic ester radical through phosphate ester bond; moreover, a molecular end contains perfluoroalkyl group phosphate ester of two acrylic ester double bonds. The method has cheap and easily obtained raw materials and simple operation, and is convenient for industrialized production; the obtained perfluoroalkyl group phosphate ester acrylic ester can be quickly solidified through adopting ultraviolet light irradiation; moreover, the obtained coating has excellent hydrophobicity and lipophobicity and high fire retardation efficiency, thereby having a broad industrial application prospect.

The invention discloses fluorosilicone modified acrylic resin as well as a preparation method and an application thereof. The fluorine-silicon modified acrylic resin is prepared from the following components: methacrylate monomers, fluorine-containing acrylate monomers, acrylate-based silicone oil, allyl silicone oil, a polymerized active silane coupling agent, methacrylic acid, hydroxyl-containing active crosslinking monomers, glycidyl methacrylate, trimethylolpropane trimethacrylate, an initiator, a chain transfer agent and a solvent. The fluorine-containing acrylate monomer is composed of aC2-C3 short-chain fluorine-containing alkyl acrylate monomer and a C10-C12 long-chain fluorine-containing alkyl acrylate monomer. The fluorine-silicon modified acrylic resin prepared by the inventionhas the characteristic of high low viscosity, is convenient to construct and use, and reduces the generation of VOC. The coating prepared from the modified acrylic resin has the characteristics of high impact-resistant self-repairing function, icing prevention, low surface energy, hydrophobicity, oleophobicity, stain resistance, high and low temperature resistance and the like.

The invention discloses fluorine-containing nanoparticles with high dispersibility and bonding property and a superamphiphobic surface prepared from the nanoparticles. The fluorine-containing nanoparticles with high dispersibility and bonding property are prepared by the steps of grafting a fluorine-containing polymer with an upper terminal group to be a compound D on the surfaces of the nanoparticles, and reacting an epoxy resin polymer with a terminal group to be a compound A with the fluorine-containing polymer through a heat-breaking Diels-Alder reaction. The superamphiphobic surface disclosed by the invention is prepared by the steps of dispersing the fluorine-containing nanoparticles with high dispersibility and bonding property in a low-boiling-point fluorine-free solvent, uniformly mixing with an epoxy resin curing agent, carrying out spray coating on the surface of a substrate material, and carrying out vacuum drying. According to the fluorine-containing nanoparticles disclosed by the invention, the epoxy resin polymer with high dispersibility is introduced, as the epoxy functional group contained in the dispersing polymer can take place a curing reaction with the epoxy group by using the epoxy resin curing agent in the solvent to fix the fluorine-containing nanoparticles on the surfaces of most substrates, the bonding problem of the fluorine-containing nanoparticles on the substrate surface is solved.

The invention discloses a room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and a preparation method and application. The coating is prepared from, by mass, 69%-95% of condensed type fluorine-silicone resin, 5%-30% of the fluorinated cage-shaped silsesquioxane and 0.5% of dibutyltin dilaurate. The fluorine-silicone resin and the fluorinated cage-shaped silsesquioxane are hydrolyzed through oxethyl functional groups contained by the fluorine-silicone resin and the fluorinated cage-shaped silsesquioxane, and dealcoholization condensation is performed under the action of a catalyst to form the coating; the fluorine-containing groups can be gathered on the surface of the coating in the film forming process, therefore, the surface energy of the coating can be reduced, and the hydrophobic and oleophobic properties are improved; the synergistic effect of fluorine and silicone in the coating is beneficial for lowering the adhesive strength of ice on the surface of the coating, the contact angle of coating water reaches 124.5 degrees, and the minimum shearing strength of the ice is 82 kPa; adding of the fluorinated cage-shaped silsesquioxane is beneficial for improving the hydrophobic property and anti-icing property of the coating. The coating can be applied to the field of anti-icing coating materials.

The invention provides a preparation method for heptatridecafluorooctylpropyl polyhedral oligomeric silsesquioxane and functionalized derivates thereof. The preparation method comprises the steps as follows: adding tridecafluorooctylpropyl trimethoxy silane into an organic solvent, adding de-ionized water and NaOH, heating, stirring, reacting under reflux condition, washing by a washing solvent, and drying to obtain trisilanol sodium salt of heptatridecafluorooctylpropyl polyhedral oligomeric silsesquioxane; and adding trisilanol sodium salt into an organic reagent, dropwise adding hydrochloric acid, triethylamine and a silane coupling agent, stirring a mixture at normal temperature for reaction, removing generated deposit, carrying out rotary evaporation, removing the solvent, obtaining white crystals, dissolving the crystals in methanol, filtering for collecting insoluble parts, and carrying out vacuum drying to obtain a T8-type monofunctional tridecafluorooctylpropyl POSS (polyhedral oligomeric silsesquioxane) monomer. The preparation method can obtain long branch chain type active fluorine-containing POSS, is simple and easy in process, low in cost, high in yield and higher in product purity, and is suitable for large-scale industrial production.

The invention discloses a dry powder extinguisher containing modified smectite powder, which is prepared from the following raw materials in parts by weight: 70-90 parts of modified smectite powder, 5-10 parts of mica powder, 10-15 parts of zinc sulfide hydrate, 3-5 parts of calcium hydroxide, 5-8 parts of magnesium stearate, 3-5 parts of nitrogenous silicon oil, 2-3 parts of expandable graphite, 2-3 parts of magnesite, 2-3 parts of urea, 5-8 parts of calcium lignosulphonate, 3-5 parts of bamboo charcoal fiber, 2-3 parts of industrial essence, 2-4 parts of zinc borate, 1-3 parts of chlorinated paraffin and 8-10 parts of kieselguhr. The extinguisher has the advantages of high fire extinguishing efficiency, high moisture resistance, favorable after-combustion resistance, environment friendliness and simple production technique, and is suitable for various fire hazards.

A fluorosilicone reaction product of a mercapto functional organopolysiloxane and a fluorine-containing monomer, and methods of preparing the fluorosilicone are disclosed. The fluorosilicone products are suitable for application to substrates such as textiles, particularly fabrics, to impart oil repellent properties to the textile. The fluorosilicone reaction product is prepared from (A) a fluorine-containing monomer of the formula CH2=C(X)COOYRf, and (B) a mercapto functional organopolysiloxane.

The invention discloses a functional fluorine-containing microsphere and a self-cleaning surface built by the same. The high-dispersibility high-adhesion fluorine-containing microsphere disclosed by the invention is prepared by using the following method steps: reacting microspheres and a base amine catalyst with alpha-halogenated acyl bromide or alpha-halogenated acyl chloride to obtain a microsphere the surface of which is grafted with ATRP (atom transfer radical polymerization) initiator; carrying out ATRP random copolymerization or segmented polymerization reaction on the microsphere the surface of which is grafted with ATRP initiator, a monomer F and a monomer D so as to obtain a monomer D polymer microsphere, wherein the surface of the monomer D polymer microsphere is grafted with the monomer F and can perform D-A reaction; and reacting the monomer D polymer microsphere with an epoxy resin type polymer the terminal group of which is a compound A to obtain the fluorine-containingmicrosphere having high dispersibility and high adhesion. The self-cleaning surface disclosed by the invention is obtained by dissolving the fluorine-containing microsphere having high dispersibilityand high adhesion into a low-boiling-point solvent, then adding an epoxy resin solidifying agent E for evenly mixing and spraying a mixture on the surface of a substrate material and drying in vacuum. According to the invention, the use of a fluorine-containing solvent is avoided in the self-cleaning surface, and the obtained self-cleaning surface has strong adhesion on the surface of the substrate material.

The invention relates to an inorganic-organic compound hole sealing coating comprising two parts of a hole sealing layer and an anti-fouling layer, wherein the hole sealing layer is formed by an inorganic hole sealing agent through a dipping-pulling method and a thermal processing method on a test sample after surface processing, the anti-fouling layer is formed by an organic anti-fouling agent through the dipping-pulling method and the thermal processing method on the hole sealing layer, and the inorganic hole sealing agent is an SiO2-Al2O3 colloidal sol hole sealing agent; the organic anti-fouling agent is polytetrafluoroethylene diluent which is prepared by taking polytetrafluoroethylene dispersing liquid, distilled water and a non-ionic type surfactant as raw materials. The preparationmethod of the inorganic-organic compound hole sealing coating provided by the invention comprises two parts of preparing the inorganic hole sealing layer and preparing the organic anti-fouling layer.The inorganic hole sealing layer provided by the invention can obviously lower the porosity of the coating and obviously enhance the erosion resistance performance and the high-temperature resistanceperformance of the coating; the organic anti-fouling layer can effectively lower the surface energy of the coating, enables stains not to be easy to attach to the surface of the coating and has favorable anti-fouling function.

The invention provides a preparation method of dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, which comprises the following steps: dripping each 1mol of dodecafluoroheptyl-propyl-trimethoxylsilane into 250-10000ml of organic solvent under the condition of 0-40 DEG C, carrying out hydrolysis condensation reaction under the action of acid catalysis, carrying out the reaction for a certain period of time, and carrying out concentration, filtration, drying and other steps for preparing dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane (dodecafluoroheptyl-propyl POSS) crystals. The invention further provides the dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane. The method has simple and easy process, low cost, high yield and high product purity, and the prepared dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane product has excellent hydro-oleophobic performances, heat resistance, flame retardance and low dielectric constant performance, and can be widely applied in the fields of polymer modification, hydro-oleophobic interface materials, flame retardants, low dielectric constant materials, building coatings, space materials, medical materials, light-emitting materials, liquid crystal materials and the like.

The invention discloses a modified polysilazane prepolymer, a modified polysilazane coating and a usage method of the modified polysilazane coating. The modified polysilazane prepolymer is prepared bymixing raw materials of the modified polysilazane prepolymer and carrying out a reaction at a temperature of 50-95 DEG C for 2-10 hours, wherein the raw materials comprise the following components inparts by weight: 0.05-20 parts of perfluoropolyether, 40-100 parts of polysilazane and 0.0001-0.0005 part of a catalyst. The modified polysilazane prepolymer provided by the invention is obtained through modification of perfluoropolyether; the coating prepared from the modified polysilazane prepolymer is environmentally friendly and has good adhesion with the surfaces of most of base materials; acoating layer formed by coating and curing the modified polysilazane prepolymer has high hardness, has excellent hydrophobic and oleophobic properties, solvent resistance, high-temperature resistanceand salt-spray resistance, and has good flexibility, smoother surface and the like.

The invention discloses a gum polyurethane protective film and a preparation method thereof. The preparation method comprises the following steps of coating a thermoplastic polyurethane base film with gum with a photocurable composition and carrying out ultraviolet radiation curing, wherein the photocurable composition comprises the following components in parts by weight: 10-20 parts of urethane acrylate, 10-20 parts of bisphenol A epoxy acrylate resin, 2-4 parts of fluorine-modified oligomer, 6-10 parts of multifunctional acrylic ester, 1-3 parts of polyether polyol and 1-2 parts of a photoinitiator. The preparation method of the gum polyurethane protective film is simple; the prepared product is good in scratch resistance; and a coating has relatively good hydrophobic and oleophobic properties and good weather resistance.

The invention relates to a hydrophobic and oleophobic antibacterial wave-absorbing material. The hydrophobic and oleophobic antibacterial wave-absorbing material is prepared from, by mass, 87% to 93% of wave-absorbing material adhesive, 6% to 12% of wave absorbing material, 0.5% to 1% of antibacterial material and 0.5% to 1% of additive. The wave-absorbing material adhesive is a hydrophobic and oleophobic material. In the preparation process, all the components are mixed to be uniform. The hydrophobic and oleophobic antibacterial wave-absorbing material can be applied to kitchen electric products, and has the advantages of being easy to wash, free of potential health danger, good in temperature-resisting performance, simple in production process, good in antibacterial performance and wave-absorbing performance, saving time and materials and the like.

The invention relates to cationic polymerization monomer compounds disclosed as Formula (I) or (II), wherein the variables are defined in the specification. The oxacycloalkyl capable of ring-opening polymerization in the compounds is connected to basically perfluorinated alkyl through phenyl as a linking group. Thus, the compounds have high heat stability; when being used as a photocuring system, the compounds can effectively lower the system viscosity; and the photocured film has the advantages of low surface energy, favorable hydrophobicity and oleophobicity, high pollution resistance, high fingerprint resistance, high chemical corrosion resistance, high weather resistance and high aging resistance. The invention also relates to preparation of the cationic polymerization monomer compounds and a polymer obtained from the monomers by ring-opening polymerization. Besides, the invention also relates to a photocurable composition of the cationic polymerization monomers and a photocuring material obtained by photocuring the photocurable composition.