A particle material that has high dispersibility in a dispersion medium such as toluene having high hydrophobicity, and a slurry composition in which the particle material is used, are provided for solving the problem. A surface-modified particle material of the present invention includes: a particle material formed of an inorganic material; and a surface treatment agent formed of a silane compound having a first functional group that has any of C, N, and O atoms away over five or more atoms from Si to which an alkoxide is bound, the surface treatment agent allowing surface treatment of the particle material in such an amount that a degree of hydrophobicity becomes not less than 30%. Dispersibility is enhanced also in a dispersion medium having high hydrophobicity in a case where a functional group having a predetermined structure is introduced so as to impart predetermined or higher hydrophobicity.

A particle material that has high dispersibility in a dispersion medium such as toluene having high hydrophobicity, and a slurry composition in which the particle material is used, are provided for solving the problem. A surface-modified particle material of the present invention includes: a particle material formed of an inorganic material; and a surface treatment agent formed of a silane compound having a first functional group that has any of C, N, and O atoms away over five or more atoms from Si to which an alkoxide is bound, the surface treatment agent allowing surface treatment of the particle material in such an amount that a degree of hydrophobicity becomes not less than 30%. Dispersibility is enhanced also in a dispersion medium having high hydrophobicity in a case where a functional group having a predetermined structure is introduced so as to impart predetermined or higher hydrophobicity.

The present disclosure is to provide a vibration damping steel sheet having improved vibration damping performance. Provided according to the present disclosure are: a surface treatment composition for a vibration damping steel sheet, comprising a polymer resin and inorganic nano particles having a mean aspect ratio (L/D) of 100 or more; and a vibration damping steel sheet surface-treated with the composition.

The present disclosure is to provide a vibration damping steel sheet having improved vibration damping performance. Provided according to the present disclosure are: a surface treatment composition for a vibration damping steel sheet, comprising a polymer resin and inorganic nano particles having a mean aspect ratio (L/D) of 100 or more; and a vibration damping steel sheet surface-treated with the composition.

The present disclosure relates to the technical field of microbial electrochemical technology, in particular to a graphene-magnetite conductive skeleton electrode, a preparation method and application thereof, and a method for treating petrochemical wastewater. In the present disclosure, the surface roughness of the graphite rod electrode can be increased by the conductive skeleton modified on the surface of the graphite rod electrode, which is beneficial to the enrichment of microorganisms. The increase in the load of microorganisms will mean the amount of electroactive microorganisms will also increase, which will further improve the electron transfer ability, and because the material of the modified layer is a conductive material, it is also more conducive to the transfer of electrons; at the same time, the conductive skeleton modified on the surface of graphite rod electrode can also further enhance the transmission distance of electrons because of the skeleton constructed.

The present disclosure relates to the technical field of microbial electrochemical technology, in particular to a graphene-magnetite conductive skeleton electrode, a preparation method and application thereof, and a method for treating petrochemical wastewater. In the present disclosure, the surface roughness of the graphite rod electrode can be increased by the conductive skeleton modified on the surface of the graphite rod electrode, which is beneficial to the enrichment of microorganisms. The increase in the load of microorganisms will mean the amount of electroactive microorganisms will also increase, which will further improve the electron transfer ability, and because the material of the modified layer is a conductive material, it is also more conducive to the transfer of electrons; at the same time, the conductive skeleton modified on the surface of graphite rod electrode can also further enhance the transmission distance of electrons because of the skeleton constructed.

The present invention provides agents having efficacy against viruses, allergens, bacteria and odorants, materials including such agents, and methods for producing the agents. An agent according to an embodiment of the present invention includes titanium dioxide particles having low photocatalytic activity, and metal ions of at least one metal selected from gold, silver, platinum and copper that are adsorbed to the surface of the titanium dioxide particles. The agent may further include hydroxyapatite particles, and the metal ions may be adsorbed also to the surface of the hydroxyapatite. The metal ions may be at least partially present in the form of at least one of an oxide of the metal, a hydroxide of the metal, and the elemental metal.

The present invention relates to a process for producing a particle dispersion comprising the steps of: a) providing a dispersion consisting of a solvent and solid core particles, b) providing a solution of a soluble, interfacially-active polymer having a molecular weight of more than 5 kDa, c) mixing said dispersion of solid core particles with said polymer solution, d) removing free polymer from the obtained mixture; wherein in step a) the solvent is selected from an organic solvent, a mixture of at least two organic solvents or a mixture of at least one organic solvent with water; wherein in step c), the amount of the soluble, interfacially-active polymer mixed with said dispersion of solid core particles exceeds the amount of polymer required to coat the surface of each of the solid core particles with a monolayer of the polymer; wherein step d) is repeated until the requirement described by the following formula is fulfilled:

(ST.sub.disp−18 mN/m)/(ST.sub.solv−18 mN/m)>0.90,

with ST.sub.disp being the surface tension of the modified particle dispersion in [mN/m] and ST.sub.solv being the surface tension of the pure solvent or solvent mixture in [mN/m]; and wherein the solvent or solvent mixture contained in the dispersion of solid core particles is miscible with the solvent or solvent mixture contained in the polymer solution. The present invention also relates to a particle dispersion exhibiting a homogenous drying pattern as well as a film made thereof and the use of the non-aqueous particle dispersion.

The present invention relates to a process for producing a particle dispersion comprising the steps of: a) providing a dispersion consisting of a solvent and solid core particles, b) providing a solution of a soluble, interfacially-active polymer having a molecular weight of more than 5 kDa, c) mixing said dispersion of solid core particles with said polymer solution, d) removing free polymer from the obtained mixture; wherein in step a) the solvent is selected from an organic solvent, a mixture of at least two organic solvents or a mixture of at least one organic solvent with water; wherein in step c), the amount of the soluble, interfacially-active polymer mixed with said dispersion of solid core particles exceeds the amount of polymer required to coat the surface of each of the solid core particles with a monolayer of the polymer; wherein step d) is repeated until the requirement described by the following formula is fulfilled:

(ST.sub.disp−18 mN/m)/(ST.sub.solv−18 mN/m)>0.90,

with ST.sub.disp being the surface tension of the modified particle dispersion in [mN/m] and ST.sub.solv being the surface tension of the pure solvent or solvent mixture in [mN/m]; and wherein the solvent or solvent mixture contained in the dispersion of solid core particles is miscible with the solvent or solvent mixture contained in the polymer solution. The present invention also relates to a particle dispersion exhibiting a homogenous drying pattern as well as a film made thereof and the use of the non-aqueous particle dispersion.

A coating composition includes: (i) a film-forming resin; (ii) an infrared reflective pigment; and (iii) an infrared fluorescent pigment or dye different from the infrared reflective pigment. A multi-layer coating including the coating composition, and a substrate at least partially coated with the coating composition is also disclosed. A method of detecting an article at least partially coated with the coating composition is also disclosed.