The present invention comprises the coating and modification of textile materials in order to provide them with water-repellent properties. The object of the invention was to hydrophobize textiles loaded with metal oxide, wherein the hydrophobing agent presented here is non-toxic and environmentally friendly, adhering to the metal oxide surface considerably more stably and without the use of additional dispersants and binders, which also takes environmental aspects into account. The object is achieved by the use according to the invention of metal oxide particles and/or metal hydroxide particles of group IVB, IIB or IIIA or mixtures thereof, wherein said particles are present in a size range of 110 nm-10 μm, for the coating of textile materials and their treatment after application to the textile with phosphoric or phosphonic acid ester derivatives of the general form OP(OH).sub.2OR or OP(OH).sub.2R, wherein R is a hydrophobic residue in the form of aliphatic, branched or unbranched, alicyclic or aromatic hydrocarbon groups having 5-40 carbon atoms.

The present invention comprises the coating and modification of textile materials in order to provide them with water-repellent properties. The object of the invention was to hydrophobize textiles loaded with metal oxide, wherein the hydrophobing agent presented here is non-toxic and environmentally friendly, adhering to the metal oxide surface considerably more stably and without the use of additional dispersants and binders, which also takes environmental aspects into account. The object is achieved by the use according to the invention of metal oxide particles and/or metal hydroxide particles of group IVB, IIB or IIIA or mixtures thereof, wherein said particles are present in a size range of 110 nm-10 μm, for the coating of textile materials and their treatment after application to the textile with phosphoric or phosphonic acid ester derivatives of the general form OP(OH).sub.2OR or OP(OH).sub.2R, wherein R is a hydrophobic residue in the form of aliphatic, branched or unbranched, alicyclic or aromatic hydrocarbon groups having 5-40 carbon atoms.

A heat exchanger includes a metal base defining a heat exchange channel for flowing at least one of a refrigerant and a coolant therein, and a coating layer coated at least a part of an outer surface of the metal base. The coating layer includes sol particles and an antibacterial material, where the sol particles include silica. The antibacterial material includes a rare earth element oxide. By combining the antibacterial agent containing the rare earth element oxide with sol, the advantages of each component can be fully utilized. On the one hand, it is easier to attach the antibacterial material via the sol, and on the other hand a surface of the metal base of the heat exchanger can have a good antibacterial and mold-inhibiting effects, which is beneficial to cost reduction.

A heat exchanger includes a metal base defining a heat exchange channel for flowing at least one of a refrigerant and a coolant therein, and a coating layer coated at least a part of an outer surface of the metal base. The coating layer includes sol particles and an antibacterial material, where the sol particles include silica. The antibacterial material includes a rare earth element oxide. By combining the antibacterial agent containing the rare earth element oxide with sol, the advantages of each component can be fully utilized. On the one hand, it is easier to attach the antibacterial material via the sol, and on the other hand a surface of the metal base of the heat exchanger can have a good antibacterial and mold-inhibiting effects, which is beneficial to cost reduction.

The present disclosure provides methods for forming sol-gels, sol-gel films and substrates, such as vehicle components, having a sol-gel film disposed thereon. At least one method of forming a sol-gel includes mixing a metal alkoxide, an acid stabilizer, and an organic solvent to form a first mixture having about 10 wt % or less water content based on the total weight of the first mixture. The method includes mixing an organosilane with the first mixture to form a second mixture having about 10 wt % or less water content based on the total weight of the second mixture.

The present disclosure provides methods for forming sol-gels, sol-gel films and substrates, such as vehicle components, having a sol-gel film disposed thereon. At least one method of forming a sol-gel includes mixing a metal alkoxide, an acid stabilizer, and an organic solvent to form a first mixture having about 10 wt % or less water content based on the total weight of the first mixture. The method includes mixing an organosilane with the first mixture to form a second mixture having about 10 wt % or less water content based on the total weight of the second mixture.

Various embodiments disclosed relate to a substrate. The present disclosure provides a substrate for use in both surface enhanced Raman spectroscopy and surface enhanced infrared spectroscopy. The substrate includes a flexible polymeric membrane, a plurality of metal oxide nanoparticles disposed on the polymeric membrane, and a plurality of metallic nanoparticles directly disposed on a portion of the plurality of metal oxide nanoparticles. The plurality of metal oxide nanoparticles are configured to work synergistically with metal nanoparticles upon exposure of the substrate surface to at least one of visible light or infrared radiation.

Various embodiments disclosed relate to a substrate. The present disclosure provides a substrate for use in both surface enhanced Raman spectroscopy and surface enhanced infrared spectroscopy. The substrate includes a flexible polymeric membrane, a plurality of metal oxide nanoparticles disposed on the polymeric membrane, and a plurality of metallic nanoparticles directly disposed on a portion of the plurality of metal oxide nanoparticles. The plurality of metal oxide nanoparticles are configured to work synergistically with metal nanoparticles upon exposure of the substrate surface to at least one of visible light or infrared radiation.

A flame retardant film comprising a polyester containing film comprising on a side thereof, a flame retardant layer. The flame retardant layer comprises a colloidal metal oxide in an amount of 6 g/m.sup.2 of more, an inorganic binder in an amount of 2 g/m.sup.2 or more, a first flame retardant being a phosphorous containing compound in an amount of 10 g/m.sup.2 or more and a second flame retardant being a mineral compound selected from the group of aluminum hydroxide, aluminum trihydrate, magnesium hydroxide, magnesium calcium carbonate, hydrated magnesium carbonate, aluminum oxide hydroxide, boron compounds, antimony trioxide and combinations thereof, the amount of the second flame retardant is 6 g/m.sup.2 or more.

A flame retardant film comprising a polyester containing film comprising on a side thereof, a flame retardant layer. The flame retardant layer comprises a colloidal metal oxide in an amount of 6 g/m.sup.2 of more, an inorganic binder in an amount of 2 g/m.sup.2 or more, a first flame retardant being a phosphorous containing compound in an amount of 10 g/m.sup.2 or more and a second flame retardant being a mineral compound selected from the group of aluminum hydroxide, aluminum trihydrate, magnesium hydroxide, magnesium calcium carbonate, hydrated magnesium carbonate, aluminum oxide hydroxide, boron compounds, antimony trioxide and combinations thereof, the amount of the second flame retardant is 6 g/m.sup.2 or more.