61results about How to "Good electrification" patented technology

The invention discloses a high weather-proof and corrosion-resistant powder paint for a satellite earth antenna. The paint comprises, by weight, 100-150 parts of polyester resin, 20-40 parts of GMA acrylic resin, 0-5 parts of beta-hydroxyalkylamide, 0-10 parts of assistants, 0-100 parts of paddings and 0-3 parts of pigments. The invention further discloses a preparation method for the powder paint. A coating after being coated by the paint and curing is good in mechanical properties, super-weather-proof, salt mist resistant, and provided with stable low gloss area.

There is a surface activation treated face 3 on at least one face of a glass fiber reinforced electrically conductive fluoro resin sheet 2. A dividing sheet 1 for hot press bonding is obtained by integrating the surface activation treated face 3 of the fluoro resin sheet and a vulcanized heat conductive electrically conductive silicone rubber laminate 4. The manufacturing method the dividing sheet comprises performing a surface activation treatment on at least one side of the glass fiber reinforced electrically conductive fluoro resin sheet 2, and integrating the surface activation treated face 3 of the fluoro resin sheet and the vulcanized silicone rubber laminate 4, in which the laminate was made by impregnating a glass cloth with electrically conductive fluoro resin mixture, sintering to form composite sheet, coating liquid heat conductive electrically conductive silicone rubber on at least one face of the sheet and thermally curing to form integrated laminate. Therefore, a dividing sheet for hot press bonding with high anti-electrostatic effect, excellent dividing capability and high durability can be provided.

The invention provides a toner for electrostatic development and an image forming apparatus. The toner for electrostatic development may include toner base particles, resin fine particles added into the toner base particles, and hydrophobic silica. The resin fine particles may include a polymer having an isobornyl group-containing acrylate monomer. In the invention, the electrical property can bemaintained well, and the resin fine particles may be prevented from being attacted onto the surface of the light-sensitive body in the high-temperature and high-humidity environment.

The invention relates to a composition of black and white electrophoretic display liquid for electrophoretic display and a preparation method thereof; the black and white electrophoretic display liquid respectively adopts carbon black and titanium dioxide nanoparticles as black and white electrophoretic particles; the concentration of the particles in the black and white electrophoretic display liquid is respectively 3 percent to 20 percent and 10 percent to 50 percent, and the mass ratio of the black and white electrophoretic display liquid is 1:15 to 1:30; the dispersion media are Isopar series, the dispersing agents are fluorinated surfactant and polymer dispersant, and the used amount of the dispersing agents is 3 percent to 40 percent of the used amount of the electrophoretic particles. The preparation method of the black and white electrophoretic display liquid comprises the steps that: first, the black and white particles, the polymer dispersant and the dispersion media are respectively ball milled to prepare the black and white electrophoretic display liquid, are mixed by a certain ratio, and are added with the fluorinated surfactant, so that the black and white electrophoretic display liquid is prepared. The electrophoretic display liquid is prepared into a micro-cup device, the spacing of two polar plates is 0.1mm, 15V forward and backward alternating voltage is applied, the response of the electrophoretic display liquid is good, the contrast is above 23:1 and the highest contrast is 38:1, the black display response time is 831ms, and the white display response time is 1123ms.

The invention relates to a device for preparing a cement water reducing agent by a physical method. Flyash is taken as a raw material and moves in a friction charged pipeline to rub with the pipeline wall, coal particles in the flyash lose electrons and carry positive charge, decarburized coal ash obtains electrons with negative charge, most coal particles with the positive charge move to a negative high voltage electrode plate and most decarburized coal dust with negative charge moves to a positive high voltage electrode plate under the action of an electric field when passing through a highvoltage electrostatic separation cavity, and the flyash is separated into the coal particles, middlings (a mixture of the coal particles and the decarburized coal ash) and the decarburized coal ash for respective collection. The decarburized coal ash is the cement water reducing agent prepared by the device. The loss on ignition (LOI) of the water reducing agent is less than 5 percent and is higher than the requirement on first-grade products of China.

A positive electrified charge control agent comprises a silicon complex compound represented by the following chemical formula (1)

(in the formula (1), [A]⁻ is a sulfate anion). A positive electrified toner for developing an electrostatic image comprises the positive electrified charge control agent. A charge control method of the positive electrified toner for developing the electrostatic image comprises a step for making the toner positively electrified by friction.

The present invention discloses an image forming apparatus. The image forming apparatus includes: an image carrying member; a developing unit that develops an electrostatic latent image formed on the image carrying member using toner; a toner dispensing unit that dispenses the toner to the developing unit; and a toner dispense control unit that controls the toner dispensing unit in accordance with an operation speed of the developing unit or the image carrying member.

The invention provides a titanium dioxide external additive which is capable of being controlled stably, maintaining frictional charging amount, having less ambient variation, maintaining stable frictional charging performance, and which is free from abnormal images resulted from attachment of a toner to a photoreceptor that is generated while image developing and subjected to a surface modification treatment. The invention also provides an electrostatic charge images developing toner that is externally added with the external additive and an image forming method using the electrostatic charge images developing toner. The inventive external additive has the characteristic that particle surface of titanium dioxide having a water-soluble component of more than 0.2% is modified by the fluorosilane compound.

The invention discloses a charge regulator and a preparation method thereof, and carbon powder, solving the problems of poor compatibility of the traditional charge regulator and resin, poor dispersibility, lower charge number and complex preparation process. A coupling, complexing and cation exchange one-pot method is adopted, intermediates related in the steps directly carry out the next step reaction in the same pot without separation, thus the process is simplified, and a pyrazolone azoic compound iron complex charge regulator with excellent charge performance, no influence by environment, good compatibility with the resin and environment friendliness is obtained. The carbon powder prepared by the charge regulator can obtain a high-quality image which is not influenced by environment factors.

A latent electrostatic image developing toner of the present invention is mainly composed of two or more binder resins, a colorant, a releasing agent and a layered compound. A first binder resin of the binder resins is a polyester resin with an acid value of 15 KOHmg/g or less. The layered compound is a compound in which at least some interlayer ions are modified by organic ions. Toner particles are prepared by granulation in an aqueous medium, and the layered compounds are localized in the surface of the particles by the pelletization in the granulation. The average circularity of the particles is 0.970 or more.

Embodiments of the invention provide a developing agent and an image forming apparatus. The developing agent includes a toner particle containing a binder resin and a coloring agent, and additives added onto the surface of the toner particle. The additives contain a silica fine particle having an average circularity of 0.90 or more. In the additives existing on the surface of the toner particle, an existence ratio of an additive having a minor axis a of a primary particle diameter falling within the range of from 30 nm to 70 nm is 70% or more.

The invention relates to an organic fluorosilicone emulsion release agent, which is prepared by the following steps: carrying out copolymerization on carboxyl alkyl silane, octamethylcyclotetrasiloxane and 1, 3, 5-tri (trifluoropropyl)-1, 3, 5-trimethylcyclotrisiloxane in a water-phase emulsion to synthesize a carboxyl alkyl/trifluoropropyl modified polysiloxane emulsion, and then carrying out cross-linking reaction on macromolecular trifluoropropyl hydrogen-containing polysiloxane. Under the action of a catalyst, the surface of a mold is coated with the fluorosilicone emulsion release agent, then curing is conducted at the temperature of 120-150 DEG C, the release agent can be cross-linked and cured on the surface of the mold to form a compact fluorosilicone coating, and due to the surface tendency, enrichment and hydrophobic and oleophobic effects of trifluoropropyl groups in the coating, the release agent has the good release effect on the surface of the mold. The coating can also endow a treated mold with a good demolding effect and easy stripping performance of a product, so that the mold treated by the mold release agent can enable a tire product to obtain a smooth and bright and clean appearance without adhesion or surface pollution under the condition that the demolding times n is less than or equal to 40-83.

The invention provides a magnetic color matching agent comprising a color matching agent masterbatch and an external additive, wherein the color matching agent masterbatch at least contains adhesive resin and magnetic particles, and the magnetic particles comprise hydrophobized nitrogen doped graphite flakes and magnetic iron oxide microparticles. The magnetic particles in the magnetic color matching agent are uniform in dispersion, stable in development when being used under the environments with high temperature and high pressure for a long term and high durable development performance; the obtained magnetic color matching agent is favorable in electrification performance and flowability, stable in electrification performance, capable of keeping high image concentration even and inhibiting fog if being used for a long term and favorable in image repeatability, and is not easily influenced by environment.

The invention provides a toner and a preparation method thereof and belongs to the technical field of toners. The preparation method provided by the invention comprises a step of performing solution polymerization on a styrene monomer and an acrylate monomer to obtain a solution containing a styrene-acrylic resin, and a step of adding an isocyanate to obtain an isocyanate-styrene-acrylic compositeresin solution, obtaining an isocyanate-styrene-acrylic composite emulsion through a phase inversion emulsification method, and mixing a binder resin emulsion, a colorant, a release agent and a flocculant to obtain the toner. According to the toner obtained by the method, the durability of the toner against mechanical impact can be improved, the problems of agglomeration, clogging and the like caused by the impact of the toner in the electronic device can be effectively reduced, and therefore, the storage stability at the time of outputting an image can be improved.