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1855results about How to "Flat surface" patented technology

Method for fabricating a thin film bulk acoustic wave resonator (FBAR) on a glass substrate

A method for fabricating a Thin Film Bulk Acoustic Wave Resonator (FBAR). The method comprises the steps of: (A) forming a sacrificial layer comprising one of a metal and a polymer over a selected portion of a substrate; (B) forming a protective layer on the sacrificial layer and on selected portions of the substrate; (C) forming a bottom electrode layer on a selected portion of the protective layer; (D) forming a piezoelectric layer on a selected portion of the bottom electrode layer and on a selected portion of the protective layer; (E) forming a top electrode on a selected portion of the piezoelectric layer; and (F) removing the sacrificial layer to form an air gap. The use of a metal or a polymer material to form sacrificial layers has several advantages over the use of zinc-oxide (ZnO) to form such layers. In accordance with a further aspect of the invention, an FBAR is provided which includes a glass substrate. The use of glass to form substrates offers several advantages over the use of other materials to form substrates. By example, most types of glass are less expensive than semiconductor materials, and exhibit low permittivity characteristics, and low parasitic capacitances. In addition, most glass materials are substantially loss free when being used in microwave frequency applications.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE

Glass fibre reinforced nylon colorful heat insulation stripe for al-alloy door & window and method for preparing same

InactiveCN101307147ADifficult to disperseSolve easy discolorationDoors/windowsMasterbatchGlass fiber
The invention discloses a glass fiber reinforced nylon colored insulated strip used for an aluminum alloy door and window. The compositions by weight portion of the glass fiber reinforced nylon colored insulated strip are: 100 portions of nylon resin, 5 to 50 portions of glass fibers, 0 to 50 portions of inorganic filler, 5 to 25 portions of toughening agent, 0.3 to 5 portions of coupling agent, 0.3 to 5 portions of dispersing lubricant, 0.2 to 5 portions of antioxidant, 0.1 to 1 portion of light stabilizer, 0.1 to 1 portion of heat stabilizer and 2 to 10 portions of colored masterbatch. The invention also discloses a method for preparing the colored insulated strip. The glass fiber reinforced nylon colored insulated strip solves the problems that the masterbatch and the filler are difficult to disperse and nylon 66 is easy to change color during the processing procedure; the insulated strip products have various colors, superior performance and beautiful appearance; and the glass fiber reinforced nylon colored insulated strip realizes perfect matching with the window color, can achieve the beautility effect, meets and enlarges the demand of clients and the market, and is favorable for promotion, use and development of the glass fiber reinforced nylon 66 insulated strip.
Owner:FOSHAN NANHAI YILE ENG PLASTICS

Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material

The invention discloses a method for preparing a continuous fiber multiaxial fabric reinforced thermoplastic composite material. The prepared continuous fiber multiaxial reinforced thermoplastic preconsolidating material is taken as a base material of the composite board, and combined with other functional materials for forming a novel material system which can be used for producing multiaxial fabric reinforced thermoplastic composite materials for different industries and solving the technical bottleneck that different materials have different composite bonding difficulties. According to the invention, the prepared composite material is constructed by continuous fiber multiaxial direaction; materials have the characteristics of resilience and uniform stressing on different directions. In addition, light sandwich panel formed by a honeycomb core material provides higher impact strength of materials, which is suitable for preparing structural parts and interior decorative parts in the field of railway car containers of navigation and aviation. The product of light-weight flame retardant can be recovered and used, and is more suitable for industrialization scale production of the warp knitting industry organization.
Owner:CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH

Preparation method of blocky porous carbon with high specific surface area

The invention relates to a preparation method of a blocky porous carbon block with high specific surface area, which comprises the following steps: using saccharides and phenols as reaction monomers and adding inorganic acid/organic acid/sulphate as the catalyst to form blocky carbon by a hydrothermal carbonization method, and then carbonizing immediately in an inert atmosphere to obtain the porous carbon material with high specific surface area, wherein the inside of the material has abundant micropores and mesopores, and the BET can be up to 700m<2>/g. The method is mainly characterized in that the preparation process adopts the hydrothermal carbonization method requiring moderate conditions, water is in a high-pressure and high-temperature state in the hydrothermal process, the solubility of the monomers is raised with the increase of the temperature in the heating process, the reaction monomers are polymerized into the stable blocky carbon material under the action of the catalystand the stable blocky carbon material are immediately carbonized into the blocky porous carbon material at high temperature at the inert atmosphere. The material can be furtheractivated to increase the specific surface area and the pore volume, thereby having broad application prospects in the aspects of adsorption, electrode materials and catalyst carriers.
Owner:EAST CHINA UNIV OF SCI & TECH

Glass steel radar cover single element and forming method thereof

InactiveCN101630774AAdjust and control thicknessFlat surfaceRadiating element housingsRadarSingle element
The invention relates to a glass steel radar cover single element and a forming method thereof. The radar cover single element is a spherical body, the periphery of which is provided with a sewing structure, wherein the spherical body is formed by assembling the inner skin and the outer skin of the glass steel with a foam core layer and the foam core layer is formed by solidifying injected polyurenthane foam glue material. The forming method comprises the following steps of: presetting a fundamental mould, and copying the female mould and the male mould of the glass steel with the same curvature based on the fundamental mould; respectively manufacturing the inner skin and the outer skin of the radar cover single element on the inner surfaces of the female mould and the male mould of the glass steel; and merging the moulds, and forming an inner cavity between the inner skin and the outer skin. The invention is characterized in that the inner skin is provided with a plurality of through holes which enter into the inner cavity; and the inner cavity is filled with polyurenthane foam glue material from the outside to the inside by the through holes and is solidified to be a foam core layer. The method has simple operation, effectively reduces the use waste of polyurenthane foam, has low cost, guarantees the consilient thickness of the inner skin and the outer skin, and can assemble the radar cover with good safety, reliability and wave permeability.
Owner:北京玻钢院复合材料有限公司

Pulp forming mold integrally turning automat and production process thereof

The invention provides a pulp forming mold integrally turning automat and a production process of the automat. The automat comprises a pulp box, a shifter, a receiving frame, a hot-pressing upper mold, a forming mold device and racks, wherein the pulp box is arranged on a lower rack and the forming mold device is arranged on an upper rack; the shifter is arranged on a sliding guide of the lower rack, the hot-pressing upper mold is arranged on the upper rack next to the forming mold device; and the receiving frame is connected with one end of the shifter. The automat further comprises a feed shifter mold, a first hot-pressing lower mold and a second hot-pressing lower mold, wherein the feed shifter mold is arranged on the upper frame and in parallel to the hot-pressing upper mold side far from the forming mold device, the second hot-pressing lower mold is arranged in the shifter end near the receiving frame, and is parallel to the first hot-pressing lower mold along the moving direction; a waiting position is arranged between the feed shifter mold and the forming mold device; and the forming mold device is further provided with a pulp turning and sucking mechanism and an extruding mold. The automat of the invention can realize two production processes to meet requirements of various production draft angles of different products, so as to satisfy customer demands.
Owner:广州市浩洋新材料有限公司
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