37results about How to "Simple technological advancement" patented technology

The invention relates to a preparation method of a graphene / ferric oxide / polyaniline composite material. The method comprises the following steps: ultrasonically uniformly dispersing graphene oxide; adding a sodium dodecyl sulfate aqueous solution and aniline to mix; ultrasonically forming a stable and uniform mixing solution; stirring in an ice-water bath, and dropwise adding ammonium persulfate which is acidized by hydrochloric acid; continuously stirring in the ice-water bath for 12 hours; performing centrifuging and water washing on the obtained dark-green solution to obtain a gel type substance; ultrasonically dispersing the gel type substance into a hydrochloric acid solution; then dropwise adding a saturated ferric chloride solution, and continuously ultrasonically treating; stirring for 1 hour under room temperature; heating through water for 12 hours at the temperature of 180 DEG C; finally performing centrifuging, water washing and freeze drying to obtain the graphene / ferric oxide / polyaniline composite material. The method is simple in process, high in operability, small in equipment investment, and low in production cost; the graphene / ferric oxide / polyaniline composite material prepared through the method is high in electrochemical stability, high in specific capacity, excellent in circulating performance, and outstanding in rate capability.

The invention discloses a bubble-producing polylactide acid-glycolic acid effervescence drug. The bubble-producing polylactide acid-glycolic acid effervescence drug comprises polylactide acid-glycolic acid, an effervescence substance, a chemotherapy drug and an organic solvent, wherein the concentration of polylactide acid-glycolic acid in the organic solvent is 0.1-1.0g / mL; the effervescence substance consists of organic acid and alkaline substance, the concentration of organic acid in the organic solvent is 0.1-0.5g / mL, and the concentration of alkaline substance in the organic solvent is 0.1-0.5g / mL; the concentration of chemotherapy drug in the organic solvent is 1-10g / mL. The invention also provides a preparation method of the bubble-producing polylactide acid-glycolic acid effervescence drug and a bubble-producing polylactide acid-glycolic acid effervescence drug stent material. The bubble-producing polylactide acid-glycolic acid effervescence drug has the advantages that under the irradiation action of HIFU (high intensity focused ultrasound), the effervescence substance produces air bubbles in the stent material, so that the ablation effect of HIFU on tumors is improved; the loaded chemotherapy drug is released out, and the capability of stent chemotherapy treating the tumors is realized.

The invention provides a drug-loaded nanofiber with a radial discontinuous drug distribution characteristic. The drug-loaded nanofiber comprises an inner core layer, wherein a middle layer is arranged at the periphery of the inner core layer; an outer surface layer is arranged at the periphery of the middle layer; the inner core layer, the middle layer and the outer surface layer coaxially stretch; drugs in the fiber are radially distributed discontinuously; and the inner core layer and the outer surface layer contain the drugs. The invention further provides a preparation method of the drug-loaded nanofiber. The preparation method comprises the steps that a spinnable polymer solution is prepared into a mother solution; the drugs are added to the mother solution to form an inner core layer working fluid and an outer surface layer working fluid; the inner core layer working fluid and the outer surface layer working fluid are respectively packed into an inner core layer fluid injector and an outer surface layer fluid injector; a middle layer fluid injector is filled with the mother solution; the inner core layer fluid injector, the middle layer fluid injector and the outer surface layer fluid injector are respectively connected with three injection pumps; injection rates of the three fluid layers in a three-stage coaxial spinning head are respectively controlled by the three injection pumps; and the nanofiber with the radial discontinuous drug distribution characteristic is prepared by the action of high-voltage static. The nanofiber prepared by the method is clear in structure, small in nano diameter and good in linearity.

The invention provides a construction method of graphite oxide based thermal mortar. The method includes the steps of 1), base wall treatment; 2), caulking of door and window openings, wall bushing and sticking treatment; 3), vertical hanging, placing a right angle in the horizontal direction of a vertical line and snapping a control line; 4), preparation of the graphite oxide based thermal mortar; 5), painting of the graphite oxide based thermal mortar; 6), snapping of a dividing line and a dividing groove; 7), applying of anti-crack mortar, pressing of a layer of alkali-resistant mesh fabricand compaction leveling; 8), construction of paint decorative finish. The graphite oxide based thermal mortar is taken as an insulation material, graphite oxide is rarely used in mortar, cement is mainly used in the insulation mortar, adhesive force with the wall is high, painting of an interfacial mortar layer is not needed, construction operation is facilitated, and the insulation layer is lessprone to cracking and loosening after a long term.