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31results about How to "Inhibition becomes larger" patented technology

RF ldmos device and method of forming the same

A radio frequency (RF) laterally diffused metal oxide semiconductor (LDMOS) device is disclosed, which includes: a gate structure on a surface of a substrate; and a source region and a drain region beneath the surface of the substrate, the source region and the drain region formed on opposite sides of the gate structure, wherein the gate structure includes a first section proximal to the source region and a second section proximal to the drain region, and wherein the first section of the gate structure has a dopant concentration at least one decimal order higher than a dopant concentration of the second section of the gate structure. A method of forming an RF LDMOS device is also disclosed. With the gate structure including two sections having different dopant concentrations, the present invention is capable of reducing the hot carrier injection effect while possessing a low on-resistance.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

Process for preparing dibenzylamine quaternary ammonium salt high-temperature resistant corrosion inhibitor and applications thereof

The present invention discloses a process for preparing a dibenzylaminquaternary ammonium salt high-temperature resistant corrosion inhibitor and applications thereof. The preparation process comprises the following steps: (1) Dissolve the amine reagents benzylamine, phenethylamine, morpholine or indole in an organic solvent, slowly add epichlorohydrin dropwise, stir to react at a room temperature for 12-14 hours, and then distill under reduced pressure, and wash to obtain an intermediate I; (2) Dissolve the intermediate I in an organic solvent, add dibenzylamine at a ratio, then add an acid binding agent, warm to 60-80° C. to react for 14 to 16 hours, after cooling to room temperature, perform filtration, extraction and distillation under a reduced pressure to obtain an intermediate II; (3) Dissolve the intermediate II in an organic solvent, add quaternizing reagent at a ratio, then warm to 80-110° C. to react for 12 to 15 hours, after cooling to room temperature, perform filtration, extraction and distillation under a reduced pressure to obtain the dibenzylaminquaternary ammonium salt high-temperature resistant corrosion inhibitor. The process is simple and feasible, and its principle is reliable, and the prepared corrosion inhibitor has good resistance to the acid corrosion of carbon steels in oil-gas wells.
Owner:SOUTHWEST PETROLEUM UNIV

Layered anti-aging insulation cover for solid insulation ring network cabinet

The invention discloses a layered anti-aging insulating cover for a solid insulating ring network cabinet, which belongs to the field of solid insulating ring network cabinets. A layered anti-aging insulating cover for a solid insulating ring network cabinet includes an insulating sleeve body, an insulating The lower end of the sleeve body is fixedly connected with the busbar inlet pipe, which can effectively prevent the fungus or bacteria attached to the "wound" from continuing to enter the epoxy resin insulation layer when the insulation cover is accidentally bumped through the use of nano-sterilizing layer and carbon fiber. The effect of spreading, and at the same time inhibiting the "wound" from continuing to grow into the epoxy resin insulation layer, effectively hindering the scope of biological aging, can reduce the aging speed of the insulation sleeve body, and at the same time, the setting of high thermal conductivity layer and heat radiation film can effectively It conducts the heat generated by the switch components to the outside and reduces the heat deposition in the insulating sleeve body, so as to effectively maintain the benign heat distribution inside and outside the insulating sleeve body and improve the service life of the insulating sleeve body.
Owner:NANTONG SUYUAN HENGXUAN ELECTRIC
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