38results about How to "Uniform interface" patented technology

The invention discloses a novel polymer lithium battery and a relative preparation method. The invention modifies the baffle membrane of general liquid lithium battery, adds chemical crosslink agent monomer with high boiling point into anode slurry and cathode slurry used for preparing liquid lithium battery, fills liquid lithium battery electrolyte with thermal initiator, to process thermal solidification, to obtain a novel polymer lithium battery. The invention can use general production process and device of prior liquid lithium battery, with the support for batch production of polymer battery, while the novel battery has same electric property of liquid battery.

The present invention discloses a negatron compression rate-ultra-steep sub-threshold slope field effect transistor and a preparation method thereof. According to the technical scheme of the invention, in the sub-threshold region of a device, a first conventional gate dielectric layer and a second conventional gate dielectric layer form a conventional gate dielectric capacitor. A negatron compression-rate gate dielectric layer forms an NEC capacitor. In this way, the capacitance value of the conventional gate dielectric capacitor is larger than the absolute value of the NEC capacitor, so that the above two series capacitors are negative in value. The gate control coefficient is less than 1 and the gate leakage current is inhibited. As a result, the gate voltage has an exceptional control capability over the surface of a channel, so that the device is ultra-steep in sub-threshold slope. Meanwhile, considering the variation at the electronic scale, the NEC capacitor of the device enables the macroscopic properties of the device to be free of the hysteresis and the material fatigue resistance any more. Therefore, on the basis that the power consumption of the device is reduced, the NCFET problem of the traditional ferroelectric material is solved. For the industry development of low-power-consumption integrated circuits in the future, the negatron compression rate-ultra-steep sub-threshold slope field effect transistor and the preparation method thereof have a wide application prospect.

The invention relates to a paper-based friction material with a uniform interface and a preparation method of the paper-based friction material, and belongs to the technical field of material preparation. The method comprises the steps of biologically modifying wollastonite fibers and silicon dioxide powder which are used as friction base materials by using hydrophilic aldehyde-enriched all-grass of Fragrant Elsholtzia so as to improve the dispersity, then co-blending natural rubber and phenolic resin for modification to obtain an adhesive, and finally preparing the paper-based friction material with the uniform interface by using a wet type papermaking method. According to the paper-based friction material and the preparation method, the dispersity of the friction base materials is improved by biological modification, so that friction material slurry can be dispersed more uniformly; finally, the co-blended adhesive is used for soaking the material and then realizes hot-press forming, so that the friction materials can be bonded more compactly, difficult in settling and flocculation and suitable for large-scale production; meanwhile, the paper-based friction material is high in wear resistance, and the wear rate is 0.85*10<-8> to 1.2*10<-8> cm<3> / J.

The invention discloses a composite molding preparation method of three-component phononic crystal, comprising a mould structure design method and a three-component phononic crystal composite preparation method developed around a mould. The mould is composed of a first molding plate (1), a second molding plate (2), a third molding plate (3), a fourth molding plate (4) and a fifth molding plate (5), wherein the first molding plate and the second molding plate form a two-component phononic crystal composed of an oscillator and a wrapping body; the third molding plate, the fourth molding plate and the fifth molding plate prepare the three-component phononic crystal composed of the two-component phononic crystal and a substrate. The invention is a composite molding preparation method which not only contains grouping shaping but also contains layering shaping, and can prepare the three-component phononic crystal with low cost. The prepared three-component phononic crystal has the advantages of favorable combination property, stable performance, even interface, strong designability and the like.

The present invention discloses a Ti2AlC / TiAl-based composite and a preparation method thereof, firstly TixAly powder is prepared by reaction of Ti / Al, the TixAly powder and Ti3AlC2 powder are mixed evenly by wet milling, then dried and filled into a mold for vacuum hot pressing curing to obtain the Ti2AlC / TiAl-based composite. The Ti2AlC / TiAl-based composite comprises matrix phase TiAl and reinforcing phase Ti2AlC, Ti3AlC2 is completely converted into the Ti2AlC, and the Ti2AlC / TiAl-based composite is free of impurity phase TiC and the like. The preparation process is simple, the sintering temperature is low, production cost is low, the obtained composite is fine in organization and remarkable in toughening effect, and can greatly improve the strength and toughness of the TiAl intermetallic compound. The preparation method is suitable for industrial production, the obtained Ti2AlC / TiAl-based composite is expected for using in the manufacture of aircraft engine components and ultra high-speed aircraft wings and housings.

The invention relates to a method for preparing a three-component phononic crystal by using scattering objects. The method comprises the following steps: orderly arranging and uniformly coating the scattering objects in substrates, wherein the substrates are epoxy resins in different mixture ratios; the process of coating is implemented by using a molding mold consisting of an upper molding plate (1), a lower molding plate a (3) and a lower molding plate b (5); scrubbing the scattering objects by using acetone and arranging the scrubbed scattering objects in a semispherical hole (4) of the lower molding plate a; covering the upper molding plate at the upper end of the lower molding plate a; casting the epoxy resins from which air bubbles are removed into the lower molding plate a from a casting hole (2) of the upper molding plate (2); solidifying the scattering objects in a baking oven at the temperature of between 30 and 100 DEG C for 24 hours; turning the scattering objects coated and solidified by the epoxy resins for 180 degrees and placing the turned scattering objects into a concave volume of the lower molding plate b; and casting the epoxy resins onto the other sides of the scattering objects and solidifying the scattering objects in the baking oven at the temperature of between 30 and 100 DEG C for 24 hours to obtain the three-component phononiccrystal. The three-component phononic crystal has the characteristics of stable performance, uniform interface, strong designability and the like.

The invention relates to a metal lithium negative electrode with organic and inorganic dual protection layers. The invention belongs to the technical field of electrochemistry, and relates to the metal lithium negative electrode with the organic and inorganic dual protection layers and application of the metal lithium negative electrode in a secondary lithium battery. The protection layers are characterized in that an organic protection layer is built on a surface of the metal lithium negative electrode from one or more of acrylate containing amino, cyan, nitro or nitroso, one or more of acrylic organic matters except several types of the acrylates and one or more of small molecule compounds containing nitrogen, meanwhile, a nitrogen-containing part in the organic layer reacts with metal lithium to form an inorganic protection layer at an interface in an in-situ way, so that the organic and inorganic dual protection layers are formed. When the metal lithium negative electrode with the protection layers is applied to a lithium battery, the coulombic efficiency of the battery can be effectively improved by a synergistic effect of the organic layer and the inorganic layer, the growth of lithium dendrites is prevented, the safety problem is improved, and the cycle lifetime is prolonged.