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

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 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.

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 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 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.