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353 results about "Hard core" patented technology

Preparation method for acrylic acid microemulsion with self-crosslinking core-shell structure

ActiveCN102199239ASmall particle sizeControlling Emulsion StabilityCoatingsEmulsionPolymer science
The invention provides a preparation method for an acrylic acid microemulsion with a self-crosslinking core-shell structure, which sequentially comprises the following steps of: emulsifying a seed microemulsion monomer in advance, preparing seed microemulsion and core-shell part microemulsion, emulsifying a core part microemulsion monomer in advance, and preparing the acrylic acid microemulsion with the self-crosslinking core-shell structure. In the preparation method for the acrylic acid microemulsion with the self-crosslinking core-shell structure, common self-crosslinking monomers are adopted for replacing expensive organo-siloxane monomers and fluoride-containing vinyl monomers, a polymerization technology is used for improving the performance of the emulsion, and therefore, the prepared acrylic acid microemulsion has low cost and can be widely used; the acrylic acid microemulsion with the self-crosslinking core-shell structure, prepared by the invention, has a soft-shell hard-core structure and a self-crosslinking characteristic; the average grain diameter of the microemulsion is 60-100nm; and the acrylic acid microemulsion with the self-crosslinking core-shell structure has good nanometer effects and good grinding performance when being used in aqueous woodware primers, and has advantages of good permeability and wettability to base materials, strong adhesive force, compactness in coating, good transparency, higher gloss and good smoothness.
Owner:东莞大宝化工制品有限公司

Organic silicon modified acrylic ester aqueous wood lacquer latex and synthesizing method thereof

The invention relates to an organic silicon modified acrylic ester aqueous wood lacquer latex and a synthesizing method thereof. The organic silicon modified acrylic ester latex has a three-layer nuclear shell structure latex particle with a hard core and a soft shell, can carry out self crosslinking at room temperature and has the particle diameter of 80-200nm, the solid content of 40-50 percentand the lowest film forming temperature of lower than 40 DEG C. The latex is prepared in such a way that a dicarbonyl compound containing double bonds and a (methyl) acrylic ester crosslinking monomercontaining double functionality or/and polyfunctionality, which can realize a room temperature crosslinking function are led in the polymerization process of acrylic ester nuclear shell latex, and anorganic silicon prepolymer is led in the outermost layer of the shell. The polymerization technology is simple and practical without gel generation in the polymerization process, and the storage stability of the latex can reach more than one year. The synthesized latex can generate an interpenetrating network structure and a self-layering structure during film formation. When the latex is appliedas aqueous wood lacquer, the pencil hardness of a lacquer film is larger than and equal to 2H, and the latex has favorable adhesive force, flexibility, scratch resistance, water resistance, oil resistance and fouling prevention.
Owner:DALIAN POLYTECHNIC UNIVERSITY

Water binding agent for lithium ionic cell electric pole material and preparation method thereof

The present invention relates to an aqueous binder used in lithium ionic cell electric pole material and the preparation method thereof, which belongs to lithium ionic cell electric pole material preparation field. The present invention aims to provide an aqueous binder for producing lithium ionic cell positive and negative plate with adjustable flexibility, and can meet all electric pole material aqueous binder requirements under various conditions of lithium ionic cell production and processing, storage and usage. The aqueouspolymer latex particle emulsion has an inside soft and outside hard core-shell structure with low polar polymer as core and high polar polymer as shell, and the solid content of the emulsion is 5-40 wt%, the mass percentage of low polar polymer is more than 0 and smaller than or equal to 95% in the core-shell structure. The lithium ionic cell produced according to the invention is provided with high capacity exertion of electroactive material, long battery periodic duty life and high voltage of discharge platform.
Owner:MEISHAN INDIGO TECH CO LTD

Photon crystal film of ultraviolet polymer colloid with photon band gap and its prepn and use

The present invention relates to photo crystal film, and is especially one kind of colloidal photon crystal film and its preparation and application in ultraviolet preventing material or cosmetics material. The colloidal photon crystal film is prepared through coating monodispersed polymer latex in hard core-soft shell structure on flat substrate and volatilizing the dispersing liquid; the obtained monodispersed polymer latex particle has shell of 20-50 nm thickness, particle size of 100-160 nm and multiple dispersion index not greater than 0.005; and colloidal photon crystal film has photon band gap in the ultraviolet region of 200-400 nm. The colloidal photon crystal film is used as the ultraviolet preventing material in cosmetics, paint, etc.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Two-component composite handle for a hand tool

InactiveUS20080014412A1Superior gripping characteristicImproved in of “ touchLayered productsDomestic articlesPlastic materialsSynthetic materials
A composite handle for a tool has a hard plastic material core and a softer grip cover with a natural component such as cork, cotton, flax, wood, or the like in a matrix of synthetic material. The two components are sequentially injection molded and a portion of the handle surface is formed by the soft grip cover and the remainder of the exterior surface is formed by the hard core. After the first injection shot, in which the hard plastic core is formed, the core is placed in a second mold and the temperature of the core is held at 55°-70° C. when the second shot is injected. The second component material with the natural component intimately distributed in the matrix of synthetic material may be injected at a temperature of up to approx. 220° C. and its final hardness is set by selectively mixing and adjusting the relative quantities of the natural component and the synthetic material.
Owner:ING JOHANN HORTNAGL WERKZEUGE M B H

Sonic surface wave pressure sensor using composite mold

The invention relates to a surface acoustic wave pressure sensor adopting a compound die, which pertains to the technical field of sensors and comprises a mushroom pressurization cap, a hard-core ball shell pressure guiding metal diaphragm, a metal force guiding column, an overvoltage protective device, a metal shell side wall, a force guiding ejector disk, a force guiding cylinder, a quartz cantilever beam sensitive element, a bottom case and an overvoltage protective device, wherein, the hard-core ball shell pressure guiding metal diaphragm, the metal shell side wall and the bottom case form an air-tight container; the upper surface of the hard-core ball shell pressure guiding metal diaphragm is connected with the mushroom pressurization cap by the metal force guiding column, while the lower surface thereof is fixed with the force guiding ejector disk rigidly connected with the force guiding cylinder; the interior of the force guiding cylinder is provided with the quartz cantilever beam sensitive element; one end of the quartz cantilever beam sensitive element is connected with a blind hole end surface of the force guiding cylinder by glass powder, while the other end thereof is connected with a blind hole of the metal shell side wall by utilizing glass powder. The flexibility of the invention is 15 times higher than the conventional surface wave sensor, and the surface acoustic wave pressure sensor of the invention is suitable for the wireless monitoring of the tire pressure of carts.
Owner:SHANGHAI JIAO TONG UNIV

Impact resistant acrylic alloy

The invention relates to an acrylic polymer, modified with one or more hard core core / shell impact modifier, which is blended with one or more low melt viscosity polymer. The alloy formed by the blend has good impact properties, good melt processability, high modulus, high surface hardness, and excellent resistance to chemical attack.
Owner:TRINSEO EURO GMBH

IP hard core intellectual property protection method and device based on path delay

The invention relates to the field of integrated circuits and aims to provide an IP hard core intellectual property protection method and device based on path delay, wherein the IP hard core intellectual property protection method and device can be used for intellectual property protection of a timing sequence logic which can be applied to input and output and needs multiple delay periods. The IP hard core intellectual property protection method and device can effectively prevent various IP core theft problems, such as a brute force attack, a cleaning attack and reverse engineering. According to the technical scheme, the IP hard core intellectual property protection method based on the path delay comprises the following steps that 1, signals need to pass through a timing sequence logic path circuit of multiple time periods from input to output; 2, a protective path is designed; 3, a designed protective circuit comprises a shifting register, a finite state machine circuit and an interconnecting line, wherein the shifting register is used for storing an initialization secret key, the finite state machine circuit is used for secrete key checking, and the signal delay of the interconnecting line is adjustable; 4, the purpose of protecting a circuit IP is achieved by adjusting and controlling the input and output delay of the protective circuit and the protected circuit. The IP hard core intellectual property protection method and device based on the path delay are mainly applied to integrated circuits.
Owner:TIANJIN UNIV

A method for improving that alignment between a soft bonding plate layer and a hard bonding plate layer

The invention discloses a method for improving the alignment between a soft bonding plate layer and a hard bonding plate layer, which comprises the following steps: manufacturing an inner layer circuit on a soft plate core plate; In the finished soft-hard bonding plate, the soft-board core plate comprises a soft-board area and a soft-hard bonding area; The coating film is pressed on the soft platearea of the soft plate core plate, and then the expansion and contraction coefficient of the soft plate core plate is measured. The inner layer circuit is fabricated on the hard board core board, andthe exposure compensation is carried out according to the expansion and contraction coefficient of the soft board core board when the inner layer circuit is fabricated. Using the same OPE punching machine to drill rivet holes at corresponding riveting positions on the soft plate core plate and the hard plate core plate respectively; Flexible and hard core plates are pre-laminated with non-flowingadhesive PP, riveted by rivets, and then compressed to produce plates. The method of the invention solves the deviation problem of the pressing counterpoint holes caused by pressing the covering film, improves the pressing quality of the soft-hard bonding plate, and reduces the deviation scrap rate of the soft-hard bonding plate layer.
Owner:SHENZHEN SUNTAK MULTILAYER PCB
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