53results about How to "Reduce electrostatic force" patented technology

An image forming apparatus, which uses an electrostatic force to hold a recording medium during conveyance, includes a rotary belt, an image forming mechanism, a driving mechanism, a contact member in contact with the rotary belt, a charging mechanism and a controller. The controller may cause the contact member to be held in contact with the rotary belt, may cause the bias voltage to vary so as to reduce the electrostatic force during a time other than the image forming operation by the image forming mechanism, and may cause the driving mechanism to drive the rotary belt when the contact member is held in contact with the rotary belt.

The invention discloses an ionic conductive polymer diaphragm for a lithium-sulphur battery, and a preparation method and application thereof. The diaphragm is mainly composed of a battery diaphragm and an ionic conductive polymer layer attached to the surface of the battery diaphragm. The diaphragm disclosed by the invention has lithium ion permselectivity and has good blocking effect to multi-sulphur anions; the lithium ion mobility of the polymer diaphragm is close to 1; the shuttling effect of the lithium-sulphur battery in a cyclic process can be effectively reduced; attenuation of the lithium-sulphur battery is inhibited; simultaneously, the effect of reducing side reaction due to shuttling of multi-sulphur anions can be realized; impedance is prevented from being further increased; and an effective method is provided for application of the lithium-sulphur battery.

The invention relates to powder for ceramic tile dry press forming and a preparation method thereof. The powder is particles with smooth surface and flowability, which are obtained by performing spray drying on a slurry prepared from a polyvinyl-alcohol-containing ceramic raw material; and the water content of the powder is less than or equal to 1%. The preparation method of the powder for ceramic tile dry press forming comprises the following steps: A. slurry preparation: adding 0.01-0.02% of polyvinyl alcohol into a ceramic slurry, wherein the water content of the ceramic slurry is 35-38%, and the fineness of the ceramic slurry is: after 200g of the ceramic slurry passes through a 250-mesh screen, the screen residue is 3-10g; and b. performing spray pulverization to obtain the powder. The powder for ceramic tile dry press forming has the advantages of smooth particle surface, high binding property, low electrostatic force among particles, and favorable flowability. In addition, the invention also provides a preparation method of the dry powder for ceramic tile dry press forming; according to the method, a low water content of dry powder particles can still be obtained after the water amount is increased; and the continuous production of the dry powder particles can also be ensured.

A gating voltage control system and method are provided for electrostatically actuating a micro-electromechanical systems (MEMS) device, e.g., a MEMS switch. The device may comprise an electrostatically responsive actuator movable through a gap for actuating the device to a respective actuating condition corresponding to one of a first actuating condition (e.g., a closed switching condition) and a second actuating condition (e.g., an open switching condition). The gating voltage control system may comprise a drive circuit electrically coupled to a gate terminal of the device to apply a gating voltage. The gating voltage control system may further comprise a controller electrically coupled to the drive circuit to control the gating voltage applied to the gating terminal in accordance with a gating voltage control sequence. The gating voltage control sequence may comprise a first interval for ramping up the gating voltage to a voltage level for producing an electrostatic force sufficient to accelerate the actuator through a portion of the gap to be traversed by the actuator to reach a respective actuating condition. The gating voltage control sequence may further comprise a second interval for ramping down the gating voltage to a level sufficient to reduce the electrostatic force acting on the movable actuator. This allows reducing the amount of force at which the actuator engages a contact for establishing the first actuating condition, or avoiding an overshoot position of the actuator while reaching the second actuating condition.

An image forming apparatus, which uses an electrostatic force to hold a recording medium during conveyance, includes a rotary belt, an image forming mechanism, a driving mechanism, a contact member in contact with the rotary belt, a charging mechanism and a controller. The controller may cause the contact member to be held in contact with the rotary belt, may cause the bias voltage to vary so as to reduce the electrostatic force during a time other than the image forming operation by the image forming mechanism, and may cause the driving mechanism to drive the rotary belt when the contact member is held in contact with the rotary belt.

The invention relates to the technical field of porous metal material and 3D printing, in particular to a powder removal method of a 3DP printed thin-walled porous metal blank. The method comprises the following steps of firstly, selecting metal powder required for molding, spraying a bonding agent to the metal powder and manufacturing a printing blank through the 3DP method; secondly, putting theprinting blank to be subjected to powder removal in a drying box to be heated for 1-2 h and then putting the printing blank into an ultrasonic cleaning machine containing an anhydrous ethanol solution to conduct ultrasonic powder removal; and thirdly, putting the printing blank subjected to powder removal into the drying box again to conduct heating treatment and then obtain the thin-walled porous metal blank with the structural integrity. Through the powder removal method, the powder of the porous printing blank with the low strength can be removed. The powder removal method has the characteristics that powder removal operation is easy, the cost is low, and the method is energy-saving and environment-friendly. The method can be adopted to conduct powder removal on 3DP printed thin-walledporous metal blanks in batch, can achieve the powder removal mechanization and provides a guarantee for mass production of 3DP parts.

The invention provides a conductive adhesive for a lithium ion battery positive pole. The adhesive comprises a fluorine-containing sulfimide lithium ion polymer. An ionic polymer main chain of the conductive adhesive comprises a superacid structure containing -SO2N-Li+SO2-, and the lithium ion can be effectively dissociated, so that the lithium ion conductivity is improved, and the battery capacity and battery charging and discharging cycle ratio under large-current charging and discharging are improved. Meanwhile, the electrochemical performance of the lithium ion battery taking the adhesive as a positive pole adhesive is stable, and the lithium ion battery is difficultly degraded along with the charging and discharging cycle, so that the service life of the battery is effectively prolonged.

This disclosure provides systems, methods and apparatus for providing multiple dielectric coatings for a shutter assembly. The multiple dielectric coatings include an outer dielectric coating and one or more inner dielectric coatings. The outer dielectric coating has an electrical trap density that is lower than electrical trap densities of the one or more inner dielectric coatings. The lower electrical trap density reduces the amount of charge buildup over various surfaces of the shutter assembly. This reduction in charge buildup also reduces electrostatic forces that may cause incorrect operation of the shutter assembly.

The invention relates to a polar plate structure, an electrostatic driving structure utilizing the polar plate structure and a manufacturing method thereof. One side of the polar plate structure is provided with at least one damping hole which passes through the polar plate structure from top to bottom, wherein the upper opening area or the lower opening area of the damping hole is larger than the area of the side opening. The damping hole is capable of being easily prepared by utilizing the prior art level. At the same moment, when the polar plate structure of the damping hole is used as a movable part of the surface and when relative motions of the movable part occur, the air between the two movable parts is no longer compressed due to confinement, but enters the damping hole through an air inlet with smaller area, and is released rapidly through the upper opening with larger area or the lower opening with larger area, so that damping forces are reduced. Because the side opening area of the damping hole is smaller, the damaged area of the polar plate area is not too large, the static electricity is not obviously reduced, and a larger electrostatic force ratio or a larger damping force ratio is obtained by utilizing the electrostatic driving structure of the polar plate structure.

The invention discloses a mask box with an anti-static damage function and a processing method thereof. The mask box comprises a base and a plurality of supporting elements, the base is provided with a bearing face, a groove is formed in the bearing face, and the groove is provided with a bottom face. The supporting element surrounds the bearing surface of the base and is configured to support a mask. The groove has a depth extending between the bearing surface and the bottom surface, and the depth is between 300 [mu] m and 3400 [mu] m, thereby weakening the electrostatic force borne by the particles on the bearing surface. By controlling the processing depth of the groove in the base of the mask box or the distance between the bottom surface of the groove and the downward surface of the mask, the influence of residual voltage of the mask on particles on the surface of the base can be effectively weakened, so that the particles are prevented from being attracted to the downward surface of the mask, and a pattern area is prevented from being polluted.

The invention relates to the technical field of polycarbonate, and especially relates to an aging-resistant polycarbonate composition. The aging-resistant polycarbonate composition comprises the following components in parts by mass: 3-12 parts of malonate, 3.5-6.8 parts of nano titanium dioxide, 15-25 parts of pentaerythritol, 10-20 parts of mica, 5-12 parts of polysiloxanes-polycarbonate, 2.6-4.2 parts of glass fiber, 30-45 parts of polycarbonate, 12-18 parts of an ultraviolet resistance agent, and 1.5-3.9 parts of stearamide. The polycarbonate composition is helpful for improving the injection liquidity, and reducing the electrostatic force of the following produced products, and at the same time, improving the efficacy of the integral production process and the quality of the produced products. The polycarbonate composition resists aging.

The present invention relates to a method of manufacturing a painted golf ball with reduced static electricity on the surface of the golf ball prior to painting to allow even painting to produce a ball without asperity on the surface, characterized by irradiating the surface of the golf ball, which is positively charged before painting, with negative ions directly before painting. Preferably, the surface of the golf ball after the irradiation with negative ions and prior to the painting is negatively charged, and particularly, the surface of the golf ball after the irradiation with negative ions prior to the painting is preferably charged at −0.1 to −40 kV.

The invention discloses a makrolon composition comprising all or parts of makrolon, aliphatic acid, and pentaerythritol esterified esters. The total weight of the makrolon is 100 parts by weight, the weight of parts or all of makrolon is 0.2-1.0 part by weight. The all or parts of the makrolon contains 1-10wt% pentaerythritol single aliphatic ester, 35-80w% Isoamyl mangano glycol fatty acid ester, 10-40wt% Isoamyl alcohol fatty acid 3-aliphatic ester, and 5-20wt% Isoamyl alcohol fatty acid 4-aliphatic ester. The makrolon composition is helpful for improving the injection liquidity, and reducing the electrostatic force of the following produced products, and at the same time, improving the efficacy of the integral production process and the quality of the produced products.

The invention relates to a preparation method of a flame-retardant plasticizer bis(1,3-dihaloisopropyl) dimethyl silicate compound. The structure of the compound is shown in the following formula: where X=Cl or Br. The preparation method is as follows: under the protection of nitrogen, in the temperature range of 30 DEG C to 70 DEG C, the molar ratio of dimethyldichlorosilane or dimethyldibromosilane and 1,3-dihaloisosilane is 1:2 to 3. Propanol is reacted in an organic solvent for 5-9 hours, and after purification, bis(1,3-dihaloisopropyl) dimethyl silicate is obtained. The bis(1,3-dihaloisopropyl) dimethyl silicate of the invention has high flame retardant performance and good compatibility with polymer materials, and is suitable for use as polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc. The flame retardant plasticizer has the advantages of simple production process, low cost and easy industrialized production.

The invention provides a preparation method of TB ultrafiltration membrane and a treatment method of oily wastewater. Compared with the prior art, the present invention reacts TB with dimethyl sulfate to obtain methylated TB, and then uses hydrogen to oxidize After sodium hydrolysis and ring opening, it is mixed with N-methylpyrrolidone and ethylene glycol monomethyl ether according to a certain ratio to form a casting solution to prepare a TB ultrafiltration membrane. The addition of EGM to the coating solution affects the phase separation thermodynamics and mass transfer kinetics of the casting solution membrane system, further improving the hydrophilicity of the membrane. The hydrophilic surface of the prepared base ultrafiltration membrane can combine water molecules to form an ordered water layer, thereby effectively reducing the electrostatic force between the membrane surface and protein molecules; at the same time, the polymer conformation will not change when the protein contacts the membrane surface, so Significantly reduced protein adsorption. It also has a very high interception rate for emulsified oil wastewater, which can reach 98.55%-99.64%, and has a good application prospect.

The invention relates to a dimethyl silicon acid dihalogen propyl ester compound serving as a flame resistant plastifier anda preparation method of the dimethyl silicon acid dihalogen propyl ester compound. The structure of the compound is shown in the formula, wherein ClXC3H5O is CH2ClCHXCH2O or (CH2Cl)(CH2X)CHO,X=Cl or Br. The preparation method comprises the following steps: dissolving dimethyl dihalogen silicon alkane in an organic solvent, adding epoxy chloropropane of which the mol is 2-3 times of that of the dimethyl dihalogen silicon alkane, performing temperature rise to enable the temperature to be 70-110 DEG C, performing a heat preservation reaction for 5-13 hours, and performing purification so as to obtain the dimethyl silicon acid dihalogen propyl ester. The dimethyl silicon acid dihalogen propyl ester disclosed by the invention is high in flame resistant efficacy, is good in plasticity, and is suitable for being used as a flame resistant plastifier of a polyvinyl chloride, polyurethane, an epoxy resin, an unsaturated resin and the like. The production technology is simple, the cost is low, and the industrialized production is easy to realize.