53results about How to "Barrier migration" patented technology

The invention is an implantable electrical stimulation lead for chronic or long term use that has an improved electrical connection between the electrode and conductor. This is accomplished through the use of metal coils embedded in the sidewall of the lead body. A wire conductor providing electrical continuity from a proximal electrode to a distal electrode has a protruding portion extending through the sidewall. This protruding portion can reside adjacent to either a proximal or a distal electrode. In any event, the protruding portion of the lire is captured underneath a ring electrode that is physically deformed into direct contact with the metal of the wire, preferably by swaging. This serve to make electrical conductivity between the wire and the electrode with the embedded coil serving as support during the swaging process.

The invention is an implantable electrical stimulation lead for chronic or long term use that has an improved electrical connection between the electrode and conductor. This is accomplished through the use of metal coils embedded in the sidewall of the lead body. A wire conductor providing electrical continuity from a proximal electrode to a distal electrode has a protruding portion extending through the sidewall. This protruding portion can reside adjacent to either a proximal or a distal electrode. In any event, the protruding portion of the lire is captured underneath a ring electrode that is physically deformed into direct contact with the metal of the wire, preferably by swaging. This serve to make electrical conductivity between the wire and the electrode with the embedded coil serving a s support during the swaging process.

The invention relates to a degradable material, in particular to a functional degradable material with a controllable degradation period and a preparation method thereof. The functional degradable material with the controllable degradation period is prepared from the following raw materials in parts by weight: 30-50 parts of polybutylene terephthalate, 58 parts of a carbon dioxide copolymer, 10-40parts of polybutylene succinate, 3-5 parts of a compatilizer, 0.2-0.5 part of a lubricant, 3-5 parts of a plasticizer and 0.2-0.5 part of an antioxidant. Raw materials of the functional degradable material with the controllable degradation period further comprise a mixture of modified starch, polyglycolic acid and poly (p-dioxocyclohexanone). By controlling the ratio of the modified starch to thepoly (butylene succinate), the ratio of the mixture of the polyglycolic acid and the poly (p-dioxanone) and the addition amount of the antioxidant, the full-biodegradable material with different degradation periods can be prepared under the composting conditions of the same temperature, humidity, pH value, flora and the like; the material is suitable for products with different degradation periods.

The invention discloses a solvent-resistant inert resin coated fluororubber sealing rubber plug and a manufacturing method thereof. The sealing rubber plug comprises the following raw materials: fluororubber, a reinforcing agent, a filling agent, a processing aid, an acid acceptor and a cross-linking agent system, wherein the sealing rubber plug further comprises a fluorine resin film which coversthe neck part of the sealing rubber plug and is subjected to corona discharge treatment; the thickness of the fluorine resin film is 5-100 [mu]m, and the fluorine resin film is one of an ethylene-tetrafluoroethylene copolymer film, a tetrafluoroethylene-perfluoropropyl perfluorovinyl ether copolymer film, a chlorotrifluoroethylene polymer film and a polyvinylidene fluoride film. The preparation method comprises the following steps: rubber material mixing, primary sheet discharging, fluorine film slicing, primary laminating vulcanization, primary punching, secondary sheet discharging, secondary vulcanization and secondary punching. The surface, in contact with a solvent, of the sealing rubber plug is coated with a layer of an inert film, low-molecular-weight organic matters in rubber can be prevented from migrating to the solvent end, the influence of dissolved matters on an organic solvent is avoided, and inaccuracy of a detection result is avoided.

The invention discloses a konjac glucomannan antibacterial preservative film which is prepared through the steps that: 1-100 parts by mass of a nano-grade titanium oxide suspension liquid is added into 200-800 parts by mass of a konjac glucomannan solution; the mixture is stirred for 20min, such that a mixed liquid is obtained; 2-10 parts by mass of glycerin is added into the mixed liquid; the mixture is stirred for 15min, and is regulated to alkaline by using a sodium hydroxide solution; the mixture is vacuumed and degassed, such that a preservative liquid is obtained; the preservative liquid is uniformly coated on the surface of a carrier, and is dried under a temperature of 65 DEG C; and the film is peeled from the carrier, such that the konjac glucomannan antibacterial preservative film is prepared. The preservative film provided by the invention has good antibacterial, light-blocking, and moisture-blocking effects, and is suitable to be applied in fruit and vegetable packages for prolonging the shelf lives of the fruits and vegetables.

The invention provides a metal oxide-perovskite interface treatment method, which comprises the following steps: impregnating a metal oxide in a silane solution to obtain an impregnated product; and carrying out heat treatment on the impregnated product. According to the invention, the uniformly covered primary amine molecular layer is formed on the surface of the metal oxide, on one hand, non-uniformly distributed active groups on the surface of the metal oxide are removed, and a layer of primary amine molecules is uniformly covered to form a primary amination layer; on the other hand, the formed primary amine layer can induce uniform nucleation growth of perovskite on the surface of the substrate and form a passivation layer, and meanwhile, ion migration is blocked; and the photoelectric conversion efficiency and the device stability of the perovskite solar cell device processed by the process are improved. The invention also provides a battery.

The invention belongs to the field of soil heavy metal pollution treatment, and particularly relates to a treatment method for rice field soil subjected to acid arsenic, lead and cadmium combined pollution. According to the treatment method, a certain amount of soil conditioner is added into the farmland soil containing arsenic, lead and cadmium combined pollution, ploughing and uniform mixing are conducted, the effects of adsorption, precipitation and the like are mainly generated on heavy metal, and the mobility of the heavy metal in the soil is reduced. Then, microelement fertilizer regulation and control are conducted on the soil, and the soil fertility is improved while microelement fertilizer with the passivation effect is applied. Thirdly, a leaf surface blocking agent is sprayed, and the mobility of the heavy metal to edible parts in the crop body is reduced. And finally performing water management to further reduce the activity of the heavy metals. The treatment method is suitable for safe utilization and risk management and control of the acidic soil of the moderately and mildly polluted rice field, and has the advantages of simple technical operation, abundant input raw material resources, low price, high heavy metal blocking efficiency, short remediation period, capability of treating various heavy metals at the same time, low secondary risk to the environment and the like.

The invention relates to the field of putty powder, and particularly discloses exterior wall alkali-proof putty which comprises the following components in parts by weight: 20-40 parts of cement, 60-80 parts of heavy calcium carbonate, 0.3-0.6 part of cellulose, 0.3-0.6 part of starch ether, 0.1-0.3 part of latex powder, and 0.3-0.8 part of an alkali resistant agent, the preparation process of theanti-alkali agent comprises the following steps: mixing the following components in parts by weight: 40-50 parts of organic silicon, 10-15 parts of inorganic filler and 200-300 parts of polyvinyl alcohol aqueous solution, and stirring for 20-30 minutes at the rotating speed of 600-1000r / min to obtain a feed liquid, carrying out spray drying treatment on the feed liquid, crushing and sieving to obtain the alkali-resistant agent. All the components of the alkali-proof putty are powder, the alkali-proof putty is suitable for a dry-mixed system, and the alkali-proof putty can be directly brushedafter being uniformly stirred after being added with mixing water during construction application.

The invention provides a river / lake heavy metal pollution sediment in-situ coverage method and device. The method comprises the following steps: adding iron tailings to the surface layer of polluted sediment, evenly mixing, adding cement to the surface layer of the sediment, and evenly mixing to form a solidified coverage layer. The coverage device at least comprises two coverage units, wherein the coverage units are connected together in series; every two adjacent coverage units are connected together through a connecting frame which is connected with an undercarriage through a hydraulic cylinder; and each coverage unit comprises a frame, a fixed plate, a turnover board, an electric mixer and a feed port. By using iron tailing grains and cement as the coverage material, the invention can effectively fix the heavy metals, lower the consumption of the coverage material, avoid reducing the effective volume of the river or lake due to excessive addition of the coverage material, effectively prevent the sediment from resuspension, effectively prevent the sediment pollution on the deep layer from releasing to the overlap water body, and reduce the adverse effect of the treatment process on the overlap water body.

The invention discloses a medicine injection pump photophobic transfusion device, which comprises an infusion bag and an infusion tube, wherein the infusion bag is placed in a photophobic shell. In the invention, the structure of the device is reasonable, an insulating layer can effectively prevent harmful matters in a photophobic layer from moving into a tube, and thus, the device is photophobic and safe.

The application belongs to the technical field of materials, and relates to a method for manufacturing nano-copper antibacterial and antiviral melt-blown cloth master batches, comprising the following steps: mixing graphene, nano-copper, microporous silica and nano-microcapsule wrapping materials to obtain Nano-microcapsule-coated graphene composite material; nano-microcapsule-coated graphene composite material and polypropylene material are mixed, melted, extruded and granulated to obtain nano-copper antibacterial and antiviral melt-blown cloth masterbatch. It also relates to the application of the nano-copper antibacterial and antiviral meltblown cloth masterbatch obtained by the above manufacturing method in a meltblown cloth with antibacterial and virus inactivation properties. Using nano-copper as an antibacterial additive to form nano-microcapsule-coated graphene composite material, and forming a melt-blown non-woven fabric masterbatch with polypropylene material, can make nano-copper firmly embedded in the molecular structure of polyester fiber to form a non-dissolving type Antibacterial fibers, so that fibers and nonwovens can obtain continuous antibacterial properties.

The invention discloses an ecological bag reinforced earth-retaining wall. The reinforced earth-retaining wall consists of multiple layers of ecological bags, wherein each ecological bag contains original soil of a site where the reinforced earth-retaining wall is to be placed or foreign soil and also contains one or more components which are added into the original soil or the foreign soil to beused to improve the soil quality; and the one or more components added into the original soil or the foreign soil are determined according to the PH value, the organic matter and the ammonia-nitrogencontent of the original soil or the foreign soil as well as one or more components in the soil separates. The ecological bag reinforced earth-retaining wall provided by the invention can avoid displacement, deformation and falling off and can be applied to ionic-type rare-earth mining areas in southern China, ecological buffer zones, ecological grassed swales, earth-retaining walls for wetlands, ecological rehabilitation projects for drainage basin revetments, road side slope projects, ecological rehabilitation projects for mines, rehabilitation technologies for black and odorous water bodiesand other fields. Moreover, the ecological bags of the ecological bag reinforced earth-retaining wall are filled with the soil and the different components added into the soil, and materials adopted for the different components are economical, efficient and green, so that migration of harmful elements in contaminated soil at the site where the reinforced earth-retaining wall is to be placed can beeffectively prevented and the quality of the contaminated soil can be improved.

The invention belongs to the technical field of films and particularly relates to a label film. The information label film is characterized in that the information label film is of an integral structure formed by sequentially arranging a coating, a PET film, an aluminum layer, a rubber layer and a base material. The material of the coating is formed by mixing, by weight, 16-70 parts of base body, 10-55 parts of reactive diluent, 9-50 parts of deionized water, 0.3-0.8 part of antifoaming agent, 0.4-1 part of flatting agent and 0.4-1.2 parts of wetting dispersant. The thickness of the coating ranges from 0.5 micron to 1 micron. The thickness of the PET film ranges from 45 microns to 50 microns. The thickness of the aluminum layer ranges from 401 angstroms to 500 angstroms. The information label film is good in printing ink adhesion force, and oil stain can be prevented from being produced on the surface of the label film.