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394results about How to "Control thickness" patented technology

Retardation film having a homeotropic alignment liquid crystal film and method for preparing the same

The present invention relates to a retardation film having a homeotropic alignment liquid crystal film, a polarizing film, an IPS (In-Plane Switching) mode liquid crystal display and a method for preparing the same. More particularly, the present invention relates to a homeotropic alignment liquid crystal film prepared from a liquid crystal mixed solution containing a polymerizable reactive liquid crystal monomer so as to improve a viewing angle characteristic of an ISP mode liquid crystal display and reduce a color shift; a retardation film prepared by integrating an oriented retardation film and a method for preparing the same; a polarizing film having the retardation film located between a polarizing element or plate and a liquid crystal cell and a method for preparing the same; and an IPS mode liquid crystal display having the polarizing film. There is an advantage in that since a homeotropic alignment liquid crystal film with a retardation of a thickness direction is prepared using a liquid crystal mixed solution containing a reactive liquid crystal monomer, a retardation film according to the present invention is not required for high-temperature heat treatment and cooling processes so that it can be applied to a high-speed continuous process. Further, there is an advantage in that a retardation film having an oriented retardation film integrated with the homeotropic alignment liquid crystal film is arranged between a polarizing element or polarizing plate of an IPS mod liquid crystal display and a liquid crystal cell so that a contrast ratio can be increased up to about 1520%, and a color shift characteristic can be also improved.
Owner:LG CHEM LTD

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

Super-hydrophobic conductive fiber, fabric and preparing method and use

InactiveCN101070672AHigh self-cleaning effectControl conductivityFibre treatmentFiberAviation
This invention relates to an ultra sparse water conductive fiber. The superficial gable is the fiber of electric conduction polymer which is composed by 20-1000 nanometers thick, diameter of 400-900 nanometer electric conduction high polymer. This fiber is for using electric conduction polymer chemical oxidation position polymerization method in fiber surface gable electric conduction polymer level. This invention also relates to a ultra sparse water electric conduction fabric, it for in the superficial gable a fabris composed of 20-1000 nanometers thick, by the diameter was the electric conduction polymer level fabric which 400-900 nanometer electric conduction high polymer particle. This fabric for use electric conduction polymer chemical oxidation home position polymerization method in fabric surface gable electric conduction polymer level. This invention's fiber or the fabric surface resistance for 200 omega /cm2-300M omega /cm2, the angel contact with water is bigger than 160degree, the roll position is smaller than 14degree. It displays highly clean ability, has the electromagnetic screen, the anti-static electricity, the stealth, the waterproofing, the dustproof function, specially for war industry, astronautics aviation, factory and mining enterprise, health and so on.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Method for mining sylvite in underground carnallite ore

InactiveCN102434141AAchieving Selective MiningHigh saturationFluid removalPotassiumEngineering
The invention discloses a method for mining sylvite in underground carnallite ore, which comprises the following steps of: (1) building wells, namely, taking three-pipe structures as well bodies, wherein the three pipes include a technical sleeve pipe, a production sleeve pipe and a central pipe; (2) building a groove on a single well, namely, filling normal-temperature water in annular space of the central pipe and the production sleeve pipe, and discharging dissolved brine from the central pipe; (3) mining by non selective dissolution at normal temperature; (4) selectively mining by hot melting at high temperature, namely, communicating two wells or well groups, pulling out the central pipe, filling a sodium chloride and magnesium chloride containing filler of 75 to 90 degrees centigrade into a well, and discharging the brine for processing from the other well in the well group; and (5) refilling a mother solution into the wells. The method for mining the sylvite in the underground carnallite ore provided by the invention realizes selective mining of potassium chloride; and, the method saves energy resources and reduces production cost; moreover, the refilling process of the mother solution realizes zero discharge of the mother solution and facilitates environment protection.
Owner:中水电海外投资有限责任公司 +1

Ultrathin soaking plate and manufacturing method thereof

The invention discloses an ultrathin soaking plate and a manufacturing method thereof. The ultrathin soaking plate comprises a cover plate and a bottom plate, wherein the peripheral edge of the cover plate and the peripheral edge of the bottom plate are in sealed connection. A groove is formed in the inner surface of the cover plate so that a cavity in a vacuum state can be formed between the cover plate and the bottom plate. A plurality of protrusions arranged in an array manner are distributed in the cavity and located on the bottom face of the groove. The protrusions are hollow pillars formed in a pressing manner. The protrusions are connected with the cover plate and the bottom plate so that the protrusions can be supported between the cover plate and the bottom plate and used for heat transmission between the cover plate and the bottom plate. The outer walls of the protrusions serve as a medium for working fluid to flow towards the bottom plate from the cover plate when the working fluid is evaporated and condensed when encountering cold. The protrusions on the cover plate are in contact with the bottom plate and can support the cavity formed by the cover plate and the bottom plate and be used for heat transmission between the bottom plate and the cover plate; and the outer walls of the protrusions serve as the medium for the working fluid to flow towards the bottom plate from the cover plate when the working fluid is evaporated and condensed when encountering cold. By means of the ultrathin soaking plate and the manufacturing method of the ultrathin soaking plate, the thickness of the soaking plate can be reduced, the protrusions are formed in the pressing manner through a simple stamping technology, the manufacturing technology is simplified, the cost is low, and the ultrathin soaking plate is suitable for large-scale production.
Owner:GUANGZHOU HUAZUAN ELECTRONICS TECH

A silicon capacitance microphone and its making method

The invention discloses a silicon electret condenser microphone and a method for making the same. The silicon electret condenser microphone comprises a shell, an acoustic transducer chip, an IC device, other passive components and a substrate, wherein the shell and the substrate are fixed together and form a cavity, and the shell and/or the substrate is provided with sound inlets; the acoustic transducer chip, the IC device and other passive components are positioned in the cavity and are respectively fixed and electrically connected with the substrate; the substrate is provided with an output end bond pad; an acoustic cavity is formed between the acoustic transducer chip and the substrate, and the substrate has a first mounting surface and a second mounting surface, with the acoustic transducer chip and the IC device fixed on the first mounting surface, and the other passive components fixed on the second mounting surface. The silicon electret condenser microphone in the technical proposal of the invention has two mounting surfaces for mounting elements, with the other passive components arranged on the second mounting surface and, the acoustic transducer chip and the IC device arranged on the first mounting surface, thereby realizing full page printing and improving the production efficiency.
Owner:SHENZHEN HORN AUDIO

Novel method for preparing chitosan nanofiber-base composite filter membrane

The invention provides a novel method for preparing a chitosan nanofiber-base composite filter membrane. The method comprises the steps that a polymer material is dissolved in a solvent to be prepared into an electrostatic spinning solution; chitosan and spinning-assisting macromolecules are dissolved in the solvent according to the certain mass ratio, a certain number of monomers capable of achieving ultraviolet light crosslinking are added, and the mixture is stirred to be uniform to obtain an electrostatic spraying solution; the electrostatic spraying solution is subjected to electrostatic spinning to obtain a nanofiber non-woven fabric supporting layer; the electrostatic spraying solution is sprayed to the nanofiber non-woven fabric supporting layer through an electrostatic spraying method to form a function blocking layer, then hot-press incipient fusion treatment is carried out, ultraviolet light crosslinking and curing treatment is carried out, and therefore the chitosan nanofiber-base composite filter membrane is obtained. The chitosan nanofiber-base composite filter membrane is prepared by combining the hot-press incipient fusion method with ultraviolet light crosslinking aftertreatment, no traditional chemical crosslinking agent is adopted, light energy is sufficiently utilized, energy conservation and environment protection are achieved, and the prepared chitosan nanofiber-base composite filter membrane can efficiently treat acid dye wastewater for a long time.
Owner:DONGHUA UNIV

Stirring head capable of enhancing mechanical property of stirring friction connecting area

The invention relates to a stirring head capable of enhancing a mechanical property of a stirring friction connecting area. The stirring head mainly comprises an integrated stirring needle (1), a detachable shaft shoulder (2) and a holding handle (3), and is characterized in that the integrated stirring needle (1) is formed by integrally connecting a column (1-4) to a conical head (1-5); a storage chamber (1-1) is arranged at the upper end of the column (1-4); a conveying hole (1-2) is formed at the center of the column (1-4); a radial spraying hole (1-3) which is communicated with the conveying hole (1-2) is formed on the conical head (1-5); the detachable shaft shoulder (2) is sleeved on the column (1-4); a lower end face of the detachable shaft shoulder (2) is resisted against an upperend face of the conical head (1-5); an upper end of the detachable shaft shoulder (2) is resisted against a lower end of the holding handle (3); a main body of an extruding piston (3-1) is inserted into the storage chamber (1-1); and the other end of the extruding piston (3-1) is connected to a force exerting device (3-2) in the form of extending out of the holding handle (3). The stirring head provided by invention can reduce the phenomena of substrate-thinning and flashing during a friction welding process and can obviously promote the mechanical property of a welded piece.
Owner:HUANGSHAN UNIV
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