38 results about "Organic stain" patented technology

The invention discloses a nano-composite environment-friendly water permeable brick and a production method thereof. The nano-composite environment-friendly water permeable brick comprises a concrete bottom layer and a mortar surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the mortar surface layer are compounded to form an integrated structure; the concrete bottom layer is prepared from the following raw materials in parts by weight: 20-40 parts of cement, 10-20 parts of water, 5-15 parts of fly ash, 50-65 parts of recycled aggregate, 50-65 parts of natural coarse aggregate, 65-85 parts of sand and 0.05-0.2 part of water-reducing agent; and the mortar surface layer is prepared from the following raw materials in parts by weight: 70-100 parts of cement, 5-20 parts of nano-TiO2, 30-60 parts of water, 200-400 parts of sand and 0.1-1.0 part of water-reducing agent. The nano-composite environment-friendly water permeable brick disclosed by the invention is integrally formed and has the advantages of high compressive strength, high flexural strength, good water permeability and good water retention, and a ground surface laid by the nano-composite environment-friendly water permeable bricks can timely dredge and drain rainwater, is conductive to growth of surrounding vegetation and can effectively supplement groundwater, reduce the pressure of a municipal drainage system and reduce the influence of surface gathered water on the traffic; and the nano-composite environment-friendly water permeable brick has a photocatalytic self-cleaning function and can decompose and remove organic stains on the surface of the brick and beautify the urban environment.

Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.

The invention discloses a method for preparing photocatalytic fluorine-free superhydrophobic self-cleaning textiles. At room temperature, hydrophobic silicon dioxide particles are dispersed in solvent A and ultrasonically treated to obtain a silicon dioxide dispersion; Add titanium tetrachloride to the mixture; then raise the temperature of the dispersion to 60°C and stir evenly, then transfer it to a closed polytetrafluoroethylene container for hydrothermal treatment, obtain silica / titanium dioxide composite particles after centrifugation, wash and dry to obtain Photocatalytic superhydrophobic composite powder; disperse the composite powder in solvent B and ultrasonically treat it to obtain a photocatalytic superhydrophobic composite powder dispersion, then impregnate clean textiles in the composite powder dispersion, pad and dry A photocatalytic fluorine-free superhydrophobic self-cleaning textile was obtained. The preparation method can avoid the potential threat of the fluorine-containing water and oil repellent finishing agent to environmental safety and human health, and can effectively degrade the organic stains attached to the surface of the fabric, endowing the textile with long-term self-cleaning performance.

The invention discloses a silicon chip cleaning agent, which is prepared by mainly mixing ethanol and hydrofluoric acid, wherein the volume ratio of the ethanol to the hydrofluoric acid is 35-45:1; the mass percentage concentration of the ethanol is 18 to 100 percent; and the hydrofluoric acid is prepared from the fluorine hydride and deionized water and is at a mass percentage concentration of 48 to 50 percent. The invention also discloses a method for cleaning a silicon chip, which comprises the following steps: washing the silicon chip with deionized water; and washing the silicon chip with the silicon chip cleaning agent. The silicon cleaning agent and the method for cleaning the silicon chip can effectively remove organic stains and improve the back cleaning effect of a hydrofluoric acid cleaning agent.

A cleaning composition that can discharge the color of blood, menstrual fluids, or other organic stains is provided. In particular, the present invention achieves a balance between control of unwanted liquid spreading by lateral wicking on a stained textile fabric to lessen the size of wet spots and maintaining the cleaning efficacy of the composition by means of specific kinds of thickening agents. The composition includes an oxidizing agent such as peroxides, a cell-lysing agent, a chelating agent, an antioxidant, a thickener, and other optional ingredients that are selectively employed to achieve an aqueous based composition that exhibits good shelf stability and stain removal properties. The thickening agent may include a cellulosic or clay material, starch, gum, fatty acid, fatty alcohol, hydrophilic colloidal particles, polyoxyethylene glycol or polyoxyethylene glycol derivatives including fatty acid esters and ethers, or a combination thereof.

The invention relates to a reactive oxygen species (ROS) generator (32), a washing device (30) and a washing method using such a ROS generator. The reactive oxygen species (ROS) generated by such a generator provide excellent washing power, and degrade organic stains rapidly to environmentally acceptable products. The generator according to the invention consumes less energy for a. comparable washing effect as compared to conventional washing machines.

A multi-functional (meth)acrylate compound containing at least three F atoms and at least three Si atoms per molecule is provided. A photocurable resin composition comprising the compound can endow support substrates with antifouling properties with respect to organic stains such as oil mist and fingerprints, without detracting from surface mar resistance.

The present invention provides a low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass. An artificial fingerprint liquid comprising a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance. The dispersion medium preferably has a surface tension ranging from 20 to 50 mN / m at 25° C., and preferably is selected from at least one of higher fatty acid, derivative of higher fatty acid, terpens, and derivatives of terpens. The fine-particle-form substance is at least one selected from inorganic fine particles and organic fine particles. The present invention provides a testing method for an optical information medium using the artificial fingerprint. The present invention provides an optical information medium which is good in the property of wiping off an organic stain, such as a fingerprint, adhering to a surface of the optical recording medium and which can maintain good recording / reproducing property over a long period.

The invention discloses a solar cell silicon chip cleaning agent and a solar cell silicon chip cleaning method. According to weight percentage, the solar cell silicon chip cleaning agent consists of 0.02-1.0% surfactant, 0.1-0.8% chelating agent, Composed of 0.02‑1.0% complex enzyme, 0.03‑2.0% salt and the rest water. The silicon wafer cleaning agent for solar cells has the characteristics of no volatilization, no irritating smell, strong cleaning effect, and fluorine-free environmental protection, and can effectively remove inorganic particles and organic stains adsorbed on the surface of silicon wafers. The cleaned silicon wafer obtains a high-quality textured surface with good uniformity, high nucleation density and low reflectivity in the subsequent texturing process.

The present invention relates to a specific cleaning composition comprising a mixture of enzymes, said mixture of enzymes comprising a dispersed protein and a specific amylase or mannanase. The invention further relates to the use of said composition in a cleaning process and / or for cleaning an article, such as a textile, and to a method for removing or reducing organic stains using said composition.

The invention relates to a preparation method of a graphene film. The preparation method comprises the following steps: treating a copper foil blank and then growing the graphene film on a copper foil, wherein the step of treating the copper foil blank comprises the following sub-steps: (1) carrying out plasma cleaning on the copper foil blank to remove dirt and then carrying out plasma oxide layer removal treatment on the copper foil blank to remove a surface oxide layer of the copper foil blank, wherein hydrogen is utilized as a plasma; (2) carrying out electrochemical polishing on the copper foil blank from which the oxide layer is removed; (3) repeating the step (1) to remove the surface oxide layer of the polished copper foil blank, thus obtaining the copper foil used for graphene film growth. A two-step method is adopted in the plasma treatment process, oxygen is pumped in to eliminate organic stains in the first step, hydrogen or other reducing gases are pumped in to remove the oxide layer in the second step, the two processes belong to chemical reaction which is more efficient than physical reaction in which argon is pumped in and is more thorough in treatment, and yellowing of the copper foil can be effectively avoided to improve the integrity and uniformity of late graphene film generation.

Temporary active coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.

The invention discloses a polyurethane cleaning agent for pretreatment. The polyurethane cleaning agent is a spraying agent and is composed of composite hydrolase (0.01 to 5%) and auxiliary materials; wherein the composite hydrolase is one or more of protease, lipase, amylase and oxidation-reduction enzyme. The cleaning agent is characterized in that composite biological hydrolase active molecules are added, after direct spraying, hydrolase can stably adhere on the surface of polyurethane through biological affinity interaction, physical absorption and chemical bonding; and thus the polyurethane coating can clean biology base organic stains easily. The pretreatment cleaning agent is sprayed on the polyurethane surface; when organic or biological stains are combined to the coating surface, part of organic or biological stains that contact with the coating can be degraded immediately; thus the bonding force between whole stain particles and the coating is weakened, the cleaning efficiency is improved, the using amount of chemical detergent is reduced, the safety is improved, and the water is saved.

The invention discloses a self-cleaning rope and a manufacturing method thereof, relating to the field of ropes, comprising a rope substrate 1 and a self-cleaning coating 2 coated on the outside of the rope substrate 1 . The self-cleaning rope and its manufacturing method provided by the present invention utilize titanium dioxide as an N-type semiconductor with photocatalytic properties, and can decompose organic stains well under light conditions. The titanium dioxide produced by the sol-gel method- Silica hydrogel is used to coat and treat the rope matrix, and the obtained rope has a good self-cleaning effect, avoids damage to the rope caused by frequent washing, and prolongs the service life of the rope. The production process is simple, the operation is convenient and fast, and the cost is low. , suitable for large-scale application.