38results about How to "Small resistance change rate" patented technology

A charging member includes a conductive metal shaft and a conductive elastic layer. The conductive elastic layer comprises a rubber material containing 50% to 100% by weight of epichlorohydrin rubber containing 56 mol % or more of an ethylene oxide and a calcium oxide having an average particle size D50 of 18 [mu]m or smaller. The invention also provides a process unit cartridge and an image forming apparatus having the charging member.

The invention discloses a low-temperature fast curing setting organic resin carrier for printing electronics and a preparation method and application thereof. The method comprises the steps that curing can be completed at the temperature of 120-150 DEG C for 1-9 min, the room temperature storage stability is good, continuous printing can be achieved, a curing film layer has the good electrical conductivity, solvent resistance, adhesive force, surface hardness and other comprehensive performances, the braking curing time is prolonged, and the resistance changing rate is smaller than 5%. Compared with the application performance of traditional printing electronic paste, damage caused by thermal treatment to organic materials and preparation devices is effectively lowered, the production yield is improved, the prepared rare and precious metal electronic paste is stably attached to various elastic substrate materials which are high surface energy and hard to adhere, high in reliability and suitable for a large-scale continuous production technology, and the production energy consumption cost is greatly lowered. The organic resin carrier is prepared from, by mass, 30-40% of organic resin, 45-59% of mixed solvents, 8-12% of curing agents and 3-5% of rapid curing accelerators.

The present invention relates to a flexible touch panel and a preparation method thereof. A preparation method of a flexible touch panel includes the following steps: obtaining a flexible substrate, the flexible substrate having a first surface and a second surface opposite to the first surface; roughening the first surface; A first silicon dioxide layer is formed by sputtering on the roughened first surface; a silver layer is formed by sputtering on the side of the first silicon dioxide layer away from the first surface; and the silver layer is formed by sputtering A yellow light process is performed to form a touch electrode layer. The flexible touch panel prepared by the above-mentioned preparation method of the flexible touch panel has good bending resistance, the touch electrode layer still has good hardness, flexibility and adhesion after repeated bending, and the above flexible touch panel The resistance change rate is small when bending.

The invention provides conductive ink for a mobile phone antenna. Based on the total weight of the conductive ink as the reference, the conductive ink is mainly composed of the following ingredients, by weight, 10-20% of modified epoxy resin, 50-70% of silver powder, 10-30% of a solvent, 0.5-2% of a dispersant, 0.5-2% of an antifoaming agent, 0.5-1% of a thixotropic agent and 2-5% of a coupling agent. Resistance value of the conductive ink provided by the invention is low and stable. The conductive ink is environmentally friendly, is safe to use, has excellent adhesive force, chemical resistance and stability, and has a good application prospect.

This invention discloses a method for producing a high accuracy thermistor nanometer powder, which uses the nitrate of Cr, Ni, Mn as raw material. The method comprises the following steps: a,adding citrate, carbowax and ammonia, heating and mixing, hydrolyzing and aggregation to form transparent colloidal solution; b, drying the colloidal solution and getting dried gel, self-igniting the gel and getting the nanometer powder. By said method, the powder has good materiality, and the size of the powder paritcle can reach to 40-60 nanometer, the powder is spinel structure, after burning its size is between 1 and 2 mum. The powder can be used repeatedly, and the rate of finished products can reach to 80%. The powder can be used to produce the thermistor with high accuracy B value and good heat resistant property.

The invention provides a low-temperature resistance silver paste, which comprises solid powder with a mass ratio of 60 to 80 to 20 to 40 and an organic binder, and a preparation method and applicationthereof. The solid powder comprises silver powder and composite inorganic powder; The composite inorganic powder includes carbon powder, titanium dioxide and silicon carbide. The mass ratio of silverpowder, carbon powder, titanium dioxide and silicon carbide powder is 60-70: 8-3: 28-18: 4-9; The organic binder comprises a mixed dibasic ester of a type DBE with a mass ratio of 72 to 75: 10 to 11:10 to 12: 2 to 8, a polyester resin, a phenoxy resin and an adhesion promoter. The silver paste has good adhesion to the thin film substrate, and is suitable for components with high flexibility requirements, and is not easy to break wires. It also has the characteristics of high thermal efficiency, fast heating speed, heat resistance, aging resistance, chemical corrosion resistance and long service life. The silver paste can also be printed according to customer needs into any shape, suitable for different power requirements of the heater device.

The invention discloses an elastic conductor and a preparation method thereof. The elastic conductor includes an elastic matrix and liquid metal, the elastic matrix is ​​non-conductive, the liquid metal adheres to the surface of the elastic matrix, and forms a continuous helical winding around the periphery of the elastic matrix. The invention adopts twist forming process to prepare the elastic conductor. When the elastic conductor is stretched and deformed, the resistance change rate is small, and it has potential application value in flexible electronic devices.