5results about How to "Guaranteed bending strength" patented technology

The present invention relates to the field of screening, and specifically provides a multi-stage ore screening device, which aims to solve the problem of reduced filtering efficiency and poor screening effect caused by filter blockage in current ore screening devices. The multi-stage ore screening device of the present invention includes a device housing and a reset component, a bending component, and a first filter plate group and a second filter plate group arranged up and down connected to the device housing. The device housing is formed with a feed chamber and a plurality of screening chambers connected to the feed chamber. The reset component can provide a pulling force to straighten the first filter plate group and the second filter plate group. The first filter plate group and the second filter plate group are provided with a bending component on their sides. The bending component can overcome the pulling force provided by the reset component to the first filter plate group or the second filter plate group and fold the two adjacent first filter plates or the second filter plates to one side, so as to clean the filter plates by beating and vibrating, avoid clogging the filter holes with ores, and ensure the screening effect.

The utility model provides a wire structure. The wire structure comprises a first dielectric layer; the seed layer is arranged on the first dielectric layer; the conductive trace is arranged on the upper surface, deviating from the first dielectric layer, of the seed layer; and the second dielectric layer covers the conductive trace and is in contact with the upper surface of the seed layer. In the prior art, in the wet etching process of a seed layer, an etching solution etches a conductive trace at the same time, so that the conductive trace is thinned, and the bending strength of the conductive trace is easily reduced and even broken, the photoresist is used as a protective layer before etching, the conductive trace is separated from the etching solution, and the conductive trace is prevented from being damaged. Therefore, when the seed layer is etched, the conductive traces are not etched, the conductive traces are prevented from being thinned, the bending strength of the conductive traces is ensured, the normal work of the whole lead structure is ensured, and the problems of open circuit and the like are avoided.

The invention relates to the field of functional ceramics, and provides a low-volume-resistivity silicon carbide ceramic material and a preparation method thereof in order to reduce the volume resistivity of silicon carbide ceramics and enable the silicon carbide ceramics to meet the use requirements of semiconductor etching equipment. The preparation method comprises the following steps: in a CVD (Chemical Vapor Deposition) furnace, firstly placing a graphite base material, then vacuumizing the CVD furnace, and then re-pressing to atmospheric pressure; introducing process gas, preserving heat for 50-60 hours to obtain a CVD-SiC ceramic material, cooling to room temperature, and discharging from the furnace; carrying out annealing treatment on the prepared silicon carbide ring; then processing the inner wall and the outer wall of the obtained silicon carbide annular material; finally, the silicon carbide ring with the graphite exposed on the inner surface and the outer surface is placed in a graphite oxidation furnace, the low-volume-resistivity silicon carbide ceramic material is obtained after treatment, the overall compactness, heat conductivity and bending strength of the material are guaranteed, the volume resistivity of the silicon carbide ceramic is reduced, and the silicon carbide ceramic can be conveniently applied to etching equipment.

The application discloses a kind of high flow high tenacity PC / ABS alloy and its preparation method;The alloy includes the following components: PC resin 60-80 parts;ABS resin 20-40 parts;Antioxidant 0.3-0.6 parts;Impact modifier 3-6 parts of compatibilization.It includes the following steps: PC, ABS, compatibilization impact modifier, antioxidant are mixed to get premix, and it is obtained by extruding granulation.The application uses polycarbonate weight average molecular weight, which ensures the tensile strength of alloy material, bending strength;Using high glue content toughener ensures the notched impact strength of alloy material, and suitable shell structure increases the compatibility of PC / ABS.The preparation method of the application is simple and easy to operate, and easy to industrial production;The product prepared by the method can be widely used in high tenacity and high flow demand material field, and has very broad application prospect and industrial value.

The application discloses an anti-static low-extraction polyethylene blow-molding product, which comprises, from outside to inside, an outer layer, an intermediate layer and an inner layer; the outer layer comprises high-density polyethylene and an anti-static agent; the intermediate layer comprises high-density polyethylene; the inner layer is fusible polytetrafluoroethylene; a transition layer is further arranged between the intermediate layer and the inner layer; the transition layer comprises high-density polyethylene and a fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer; and the fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer is obtained by reacting a fluorine-containing alcohol and poly(ethylene-g-maleic anhydride) under the catalysis of toluenesulfonic acid. The product has the advantages of corrosion resistance and clean protection, high compatibility and structural strength, and double-sided anti-static performance.