53results about How to "Low cost and environmental protection" patented technology

The invention provides a preparation method of a magnetic KMS-1 / Fe3O4 composite material and application of the material for removing ciprofloxacin. The method comprises the steps that 1, L-cysteine serves as a coupling agent, and the KMS-1 / Fe3O4 composite material is prepared under a specific condition; 2, a ciprofloxacin target solution of which the concentration ranges from 10 mg / L to 250 mg / L is prepared, and the pH is adjusted to be 1-12; 3, a certain amount of the KMS-1 / Fe3O4 composite material is added to the ciprofloxacin target solution, and the mixture is put at room temperature for a reaction. According to the preparation method of the magnetic KMS-1 / Fe3O4 composite material and the application of the material for removing ciprofloxacin, the preparation method of the magnetic KMS-1 / Fe3O4 composite material is found for the first time, it is found that the composite material can rapidly and efficiently remove ciprofloxacin, and a good adsorptive property can be maintained on the reaction condition that the change of the pH value is large (pH=1-11). According to the preparation method of the magnetic KMS-1 / Fe3O4 composite material and the application of the material for removing ciprofloxacin, the processes are easy to operate, the technology is simple, and the requirement on equipment is low; the material can be widely used for removal of antibiotic pollutants in a water environment and has a wide market application prospect.

The invention discloses a long-acting mildew-proof processing method for bamboos. The long-acting mildew-proof processing method comprises the following steps of uniformly mixing the oil and the SiO2@Ag nano-particles with the core-shell structure by adopting a physical ball milling method, and then adopting a vacuum impregnation method to enable the modified SiO2@Ag nano-particles to enter the bamboo material. The processing method is environment-friendly and easy to operate, the mildew-proof and antibacterial properties of the bamboo can and the wear resistance are improved, the defects thatthe nano-particles are poor in adhesive force on the surface of the bamboo wood, easy to lose and the like are effectively overcome, and meanwhile, the cost is low and the environment-friendly effectis achieved. By adopting the physical ball milling method, the problem of uniform and stable dispersion of the nano particles in oil can be effectively solved, compared with a nano-particle surface modification process, the long-acting mildew-proof processing method is easier to operate and is beneficial to industrial large-scale production.

The invention relates to a piercing neutral protease type time and temperature indicator, which is consisted of a time / temperature indicator and a colourimetric card, the time / temperature indicator comprises a container comprising a chromogenic reagent, a substrate and enzyme; the chromogenic reagent is a Folin phenol reagent at a concentration of 2 mg / L; the substrate is a casein solution with mass fraction being 2%, which is composed of casein, 0.1 mol / L of a sodium hydroxide solution and distilled water; The enzyme is a neutral protease solution at the concentration of 2 mg / L. The inventionis a chromogenic system for an enzyme-substrate reaction designed according to a method for measuring protein concentration by Folin-phenol, irreversible color changes can be generated through time passing or temperature fluctuations, and a visible color change can be generated, which achieves the purpose of visually indicating the quality change of the frozen food after the time and temperaturechange.

The invention discloses a method for preparing a nano iron-based polyether sulfone (PES) organic-inorganic composite material. The method comprises the following steps: (1) pretreating a PES microfiltration membrane; (2) functionalizing the PES microfiltration membrane through methacrylic acid (MA); (3) respectively performing sodium ion exchange and iron ion exchange on the functionalized PES microfiltration membrane; (4) completely soaking the PES microfiltration membrane containing iron ions in an aqueous solution of green tea, so as to form the nano iron-based PES organic-inorganic composite material through the reducing action of the aqueous solution of the green tea. By utilizing the reducing action of the materials, wastewater containing antibiotics, bromate ions, bromo-organic matters and chloro-organic matters is respectively repaired under room temperature conditions. The method is low in process cost, and easy to operate and has the environment-friendly effects, the prepared organic-inorganic composite material is high in degradation capacity, high in stability and long in service cycle, and the composite material can effectively fix iron nanoparticles, is easy to recover and regenerate, belongs to an environment-friendly functional material and is suitable for industrial production.

The invention provides a novel fireproof coating for building materials and a preparation method thereof. The novel fireproof coating is prepared from the following components: high molecular resin, propylene carbonate, toluenediamine, tetrabromo bisphenol, waste sawdust, nano titanium dioxide, waste ceramics, didecyl dimethyl ammonium chloride, nano silicon carbide, absolute ethyl alcohol, metallic oxides, a lubricant, an additive, an emulsifier, an enhancer and deionized water. The fireproof coating prepared by the invention has the advantages of being low in cost and environmentally friendly, and is excellent in flame retardance, high in adhesive force, good in ductility, high-temperature-resistant and long in service life.

The invention relates to a reinforced transparent sound insulation acrylic plate, which comprises a transparent polymethyl methacrylate plate and plastic cellosilk uniformly embedded in the transparent polymethyl methacrylate plate, and a preparation method comprises the following steps: uniformly mixing a proper amount of methyl methacrylate and an initiator, heating until boiling, then stopping heating, keeping the temperature until a feed liquid reaches a certain viscosity, and then cooling to room temperature to form a pre-polymerized material; adding a release agent and an initiator into the pre-polymerized material, uniformly mixing, and carrying out vacuum defoaming for later use; arranging plastic fibers on a special mold with an acrylic plate, and sealing and fixing the two ends of each plastic fiber; performing mold filling on the pre-polymerized material in a special mold for the acrylic plate, wherein the polymerization time is 2-5 hours; after polymerization is completed, demolding, and the obtaining reinforced transparent sound insulation acrylic plate. The performance of the sound insulation acrylic plate is met, the problem that the base material is separated from the plastic fibers is solved on the premise that the plastic fibers do not need to be post-processed, and the preparation method is simple, low in cost and environmentally friendly.

The invention relates to an extruded papain time and temperature indicator, which is composed of a combined container containing a color developing reagent, a substrate and enzyme; the color developing reagent is a Folin phenol reagent liquid B, and the concentration is 2 mg / L; the substrate is a mixture of 20 g / L of a soy protein phosphate buffer solution, 0.1 mol / L of a sodium hydroxide solutionand distilled water; the enzyme is a papain solution having a concentration of 2 mg / L. A chromogenic system of an enzyme-substrate reaction designed according to the method for determining the protein concentration of Folin-phenol, irreversible color change can be carried out under the passage of time or temperature fluctuation, so that a visible color change is generated, and the purpose of indicating the time experienced by the chilled food or the change in quality after the temperature change is achieved.

The invention belongs to the technical field of photoelectric detection, and particularly relates to a fin type photovoltaic silicon-based plasmon hot carrier infrared detection chip and a manufacturing method thereof. The infrared detection chip comprises an SOI substrate, a pixel array manufactured in top silicon of the SOI substrate, a signal reading circuit manufactured in bottom silicon of the SOI substrate and a through hole interconnection structure manufactured in a middle dielectric layer. Each single-image component comprises a metal electrode, a silicon nanowire array and a fin-typeconstruction metasurface integrated on a nanowire, so that perfect absorption of infrared radiation is achieved, absorbed photons are converted into surface plasmon hot carriers to be transferred into a semiconductor, photovoltaic signals are generated, and the detection function is achieved. The detection chip is manufactured by adopting a three-dimensional integration process, an infrared sensing unit and a signal processing unit are vertically stacked, vertical interconnection in the Z direction is realized between layers by utilizing a through hole filling technology, and the monolithic focal plane array detection chip with high density, low power consumption and ultra-large array scale is obtained.

The invention aims at solving the defect of being incendive in the existing acoustic board and discloses a flame retarding acoustic board, which comprises a board material body and plastic supporting structure that is inserted into the board material body; wherein, the board material body is prepared by a flame retarding polymer material which comprises the following components by weight percentage: 69.953 to 95.97 percent of methyl methacrylate monomer, 3 to 30 percent of fire retarding agents, 0.007 to 0.03 percent of evocating agents, 0.02 to 0.5 percent of ultraviolet radiation absorbent and 0.02 to 0.5 percent of hindered amine light stabilizer. The preparation method of the flame retardant acoustic board comprises the steps of preparing the flame retardant polymer material, surface treatment of the plastic supporting structure, mold preparation and casting molding process. The flame retardant acoustic board of the invention can not only meet the requirements of the acoustic board, but also have the function of being flame retardant; in addition, the preparation method of the invention not only has simple operation and is easy for industrial application, but also has low cost and environmental friendliness.

The invention discloses a non-stick dressing. The non-stick dressing comprises a medical cotton base material and a hydrophilic anti-adhesion layer, the hydrophilic anti-adhesion layer is composed of a super-hydrophilic high polymer material, and the super-hydrophilic high polymer material comprises any one or more of polyvinylpyrrolidone, polyurethane, polyethylene glycol and polyvinylpyrrolidone. The non-stick dressing not only has hydrophilic and anti-adhesion effects, but also can improve the seepage absorption capacity of a medical cotton base material, reduce the adhesion of the dressing and the wound surface and relieve the dressing change pain of a patient, and meanwhile, no accidental substances are left on the wound and are easy to clean. The invention also discloses a preparation method of the non-stick dressing. The method comprises the following steps: firstly, dissolving the super-hydrophilic polymer material in a solvent to obtain a super-hydrophilic polymer solution; then drying the medical cotton base material, and soaking the medical cotton base material in the super-hydrophilic polymer solution; and after soaking is completed, squeezing to remove redundant liquid, airing or drying, and sterilizing to obtain the non-stick dressing. The method is simple to operate, low in cost, environmentally friendly and suitable for industrial production.