摘要:
According to the invention, a fluorine-based or siloxane -based chemical adsorbed film containing a fluorocarbon compound can be formed on a given substrate surface in a laminated state and through chemical bonds (i.e., covalent bonds) with the substrate, it is possible to obtain a laminated film which has satisfactory adhesion to the substrate, is substantially pin-hole free and is very thin. Further, since the outermost layer may be substituted by fluorocarbon groups or hydroxyl groups, it is possible to obtain a film which has excellent water- and oil-repelling properties or hydrophilic and oil-repelling properties and can replace fluorine-based coating films, thus improving the performance of products requiring a coating having a water- and oil-repelling resistant property, weather-resistant property, wear-resistant property and so forth which are desirable in electric products, vehicles, industrial devices and so forth.
摘要:
The invention to provide a chemically adsorbed monomolecular lamination film comprising a chemically adsorbed monomolecular film formed via a siloxane-based monomolecular or polymer film on a substrate surface. It also seeks to provide a method of forming a chemically adsorbed monomolecular film efficiently and with high density on a substrate surface with few hydroxyl groups, which method comprises a step of contacting a substrate containing hydroxyl groups present on the surface with a non-aqueous solution containing a material with plural chlorosilanol groups in molecule, a step of removing the material remaining on the substrate without reaction by washing the substrate with a non-aqueous organic solution (if this process is omitted, the siloxane-based polymer film is prepared on the substrate), a step of forming a monomolecular film constituted by a compound containing a silanol group in molecule on the substrate by exposing to the air containing moisture or washing with water, after the removal step, and a step of laminating a monomolecular adsorption film by abosorbing a chlorosilane-based surface active agent constituted by a straight hydrocarbon chain having a chlorosilane groups at one end onto the substrate after the monomolecular or polymer film formation step.
摘要:
This invention provides for an anti-contaminating film which is adsorbed to a substrate surface. The film contains a --Si-- group and fluorocarbon group. The --Si-- group is covalently bonded to the substrate surface. It also provides a method of forming an anti-contaminating film on a hydrogen active substrate surface by contacting the substrate surface with a non-aqueous solution, containing a surface active material having fluorocarbon groups and chlorosilane groups, the substrate surface having active hydrogen groups, removing unreacted surface active material remaining on the substrate by washing the substrate with a non-aqueous organic solution for making a monomolecular precursor film, reacting chlorosilane groups unreacted in the adsorbed monomolecular precursor film with water after the removing step, and drying the adsorbed monomolecular film. The above washing step with the non-aqueous organic solution was omitted, and a fluorocarbon polymer film was formed to the substrate surface.
摘要:
A substrate such as metal, ceramic, plastic, and glass material having a fluorine-based coating film having strong adhesion to a surface of the substrate wherein the substrate material comprises a monomolecular or polymer adsorption film formed on a base substrate surface and having siloxane bonds and a fluorine-based coating film provided on the adsorption film and a method of manufacturing a substrate material having a fluorine coating, which is simple and does not involve any electrolytic etching step which method comprises a step of forming a monomolecular or polymer adsorbed film having --Si-- bonds from dehydrochlorination or dealchoholation the bonded on the substrate surface and causing a silane-based surface active material, capable of reaction with an active hydrogen, to be brought in contact with the substrate surface, and laminating a fluorine-based polymer bonded by a cross-linking reaction process on the adsorbed film.
摘要:
At least one monomolecule film is formed on a transparent substrate surface directly or via a protective film. The monomolecule film is formed with chemical coupling of chlorosilane surface active compound, for example, of the formula: F(CF2)m(CH2)nSiRqX3−q where m is an integer of from 1 to 15, n is an integer of from 0 to 15 provided that the total of m and n is an integer of from 10 to 30 and R is an alkyl or an alkoxyl group, or F(CF2)m′(CH2)n′A(CH2)pSiRqX3−q where m represents an integer ranging from 1 to 8, n′ represents an integer ranging from 0 to 2, p represents an integer ranging from 5 to 25, q represents an integer ranging from 0 to 2, X represents a halogen atom or an alkoxyl group, R represents an alkyl or an alkoxyl group, and A represents O, a —COO— or —Si(CH3)2—. The transparent substrate such as glass is made hydrophobic and free of contamination.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO2 surface, thus forming bonds ofCF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si (O--).sub.3over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO.sub.2 surface, thus forming bonds of CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si (O--).sub.3 over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO2 surface, thus forming bonds of CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si(O--).sub.3 over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A medical member having active hydrogen groups such as hydroxyl, amino or imino groups at its surface, is dipped, either directly or after formation of an inner layer on its surface, into a solution. The solution is prepared by dissolving a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 in a non-aqueous solvent. A dehydrochlorination reaction is brought about between active hydrogen groups at the surface of the member and SiCl groups of the surface active material, thus producing bonds ofCF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si(O--).sub.3over the entire surface. A fluorine-containing monomolecular film is formed, which is chemically (or covalently) bonded to the member surface and has a thickness at the nanometer level. Since the chemically adsorbed film is covalently bonded to the member or inner layer, it is chemically stable and difficult to separate. Medical members can be obtained when the invention is applied to an artificial tooth, a joint, a bone, a blood bag, a catheter, a blood transportation tool, a dialysis equipment part, an operation thread, a medical implant and an operation tool.
摘要:
Disclosed is an ornament with a thin film formed on the ornament surface. The thin film includes a fluorocarbon-based adsorbed monomolecular film, and the thin film is covalently bonded to the ornament. By contacting the ornament with the non-aqueous solution containing a chlorosilane group at one end and a fluorocarbon chain at the other end, a reaction occurs between hydroxyl groups at the ornament surface and the chlorosilyl groups of the material having a plurality of chlorosilyl grounds. A monomolecular film which is covalently bonded to the ornament surface is thereby obtained. A thin, fluorine-containing, monomolecular film thus can be formed on the ornament such that it is, chemically bonded to the ornament. The film is anti-contaminating, water-and oil-repelling, durable and does not spoil the intrinsic luster of the ornament.