47results about How to "Prolong the duration of action" patented technology

The invention discloses an antibacterial formaldehyde-free UV blockboard and a preparation technology thereof. The blockboard comprises a base material, an antibacterial layer and a UV curing layer which are sequentially arranged, wherein the antibacterial layer contains formaldehyde removing and bacteria resisting microspheres; each formaldehyde removing and bacteria resisting microsphere comprises a nanometer polymer hollow microsphere of which the center is permeated by water-in-oil droplets; each water-in-oil droplet comprises bamboo vinegar liquid at the outer layer, and a sodium hydroxide water solution at the inner layer; and titanium dioxide aerosol particles are dispersed in the sodium hydroxide water solutions. According to the antibacterial formaldehyde-free UV blockboard, the bamboo vinegar liquid is capable of absorbing volatile harmful gas such as formaldehyde and has spectral sterilizing efficiency to bacteria and fungus; the sodium hydroxide water solutions at the innerlayers are capable of quickly catching formaldehyde; the titanium dioxide aerosol particles are capable of oxidizing formaldehyde molecules caught by the sodium hydroxide water solutions; the water phase and the oil phase are coordinately matched with each other to continuously clean volatile harmful gas such as formaldehyde, and thus harmful bacteria and fungus can be continuously exterminated and inhibited.

The invention discloses an emulsified asphalt material for purifying automobile tail gas and a preparation method thereof. The emulsified asphalt material includes the following raw material components in parts by weight: base asphalt: 100 parts; first surfactant: 1-10 parts; water: 10-60 parts; asphalt modifier: 1-20 parts; Modified porous carbon material: 1 to 20 parts; the asphalt modifier is based on lanthanide metal oxides as a carrier, and transition metal oxides as catalytic active components; the amount of transition metal is the mass of lanthanide metal oxides 5% to 100% of that; the modified porous carbon material is a porous carbon material modified by the second surfactant. The emulsified asphalt material of the present invention is mainly used for the maintenance of expressway asphalt pavement, wherein the asphalt modifier in the emulsified asphalt material has the function of purifying the automobile exhaust pollutants on the road surface, and can be Car exhaust is purified.

This application relates to the technical field of medical devices, and provides a method for preparing a drug-coated balloon catheter. The method uses the three-dimensional balloon catheter obtained by inflating treatment as a raw material, and sequentially adopts the methods of ultrasonic atomization spraying and fumigation crystallization treatment. treatment to form crystals attached to the three-dimensional balloon catheter. This preparation method can reduce the loss rate of drugs during the intervention process and ensure that more drugs are used for treatment; at the same time, it improves the release rate of drugs so that drugs can quickly act on cells Improve the retention time of the drug in the body, make the drug act on the cells for a long time, reduce the metabolic rate of the drug, promote the absorption of the drug, and achieve a long-term therapeutic effect. At the same time, the preparation method has easy-to-obtain materials, is simple and easy to operate, has clear steps, and is favorable for wide application.