6results about How to "Magnetic" patented technology

The utility model discloses a kind of test fixture of KGD chip, including support plate, the top of support plate is fixedly installed with fixed clamping plate, the top of support plate is equipped with sliding slot, the inside sliding of sliding slot is installed with sliding block, the top of sliding block is fixedly installed with moving clamping plate, the side of moving clamping plate is fixedly installed with mounting plate, the top of mounting plate is fixedly installed with inner sleeve column one;By rotating rotating disc, the position of moving clamping plate can be flexibly adjusted, so that the clamping rubber pad of the side of moving clamping plate is contacted with the end of KGD chip away from fixed clamping plate, so as to clamp KGD chip, so as to be applicable to clamping KGD chip of different size specifications, without frequently replacing fixture or carrying out complex debugging, greatly improve the efficiency and flexibility of detection work, reduce production cost and operation difficulty and can be applicable to clamping KGD chip of different size, improve the applicability of device.

This invention belongs to the field of acyclic compound technology, specifically relating to a method for preparing tert-amyl peroxide. A tert-amyl hydrogen peroxide aqueous solution is added to a solvent and stirred to obtain a mixed solution. Under stirring conditions, p-toluenesulfonic acid and ferric phosphide are added sequentially to the mixed solution. After the addition is complete, stirring continues to produce reaction solution I. Under stirring conditions, acetic anhydride is added to reaction solution I. After the addition is complete, stirring continues to produce reaction solution II. A washing solution is added to reaction solution II, and the mixture is stirred and washed, then separated to obtain crude tert-amyl peroxide. The crude tert-amyl peroxide is washed, dried, and the solvent is removed to obtain tert-amyl peroxide. This invention avoids the problems of large amounts of hydrochloric acid produced by traditional acyl chloride methods and the corrosiveness caused by using sulfuric acid as a catalyst. Furthermore, ferric phosphide is magnetic, allowing for recycling through magnetic separation after the reaction. p-Toluenesulfonic acid can be regenerated through ion exchange resin, significantly reducing production costs.

The application provides a rotor slot wedge structure of a magnetically conductive and electrically conductive alloy material, and belongs to the technical field of double-shaft excited electric machines. The magnetically conductive and electrically conductive alloy is adopted, so that the rotor slot wedge structure has both electrical conductivity and magnetic conductivity, can guarantee the damping and oscillation suppression capability of the double-shaft excited electric machine, and can also run asynchronously at a large slip. The inertia support capability of the double-shaft excited electric machine is improved, and the frequency stability of the power system is guaranteed. Compared with a traditional slot wedge structure, a cross-shaped shallow groove is arranged on the surface of the slot wedge, so that the eddy current path can be blocked and the eddy current loss of the slot wedge can be reduced when the double-shaft excited electric machine runs asynchronously at a high slip. In addition, the shallow groove also increases the contact area between the surface of the slot wedge and the air in the air gap, and improves the heat dissipation capability. The double-ventilation groove setting of the air outlet of the slot wedge and the unequal outlet diameter setting are beneficial to balancing the air flow in each radial ventilation groove, reducing the axial thermal imbalance of the rotor winding, and reducing the insulation thermal stress.

The application provides a paint residue derived activated carbon coated cobalt nanomaterial and a preparation method and application thereof, the preparation method in the application uses solid hazardous waste paint residue as raw material, and adsorbs metal cobalt ions on the paint residue; the cobalt ion-paint residue compound is calcined and pyrolyzed, a magnetic Co-AC catalyst is obtained, and the catalyst is applied to catalytic activation of peroxymonosulfate to degrade new organic pollutants in water. The paint residue derived activated carbon coated cobalt nanomaterial in the application can be used as a green and efficient heterogeneous Fenton-like catalyst, peroxymonosulfate is activated through a non-free radical pathway, and the catalyst is easy to separate and reuse under an external magnetic field.

The application discloses a carbon-based composite material and a preparation method and application thereof. The carbon-based composite material is prepared by using biochar as a matrix, and loading manganese oxide and magnesium oxide on the surface of the biochar. The preparation method comprises the following steps: uniformly stirring and mixing dry and crushed biomass, a low-valence manganese salt solution and a permanganate solution according to a ratio of 200-500 g:1.5-2.5 mol:1-1.5 mol, washing, filtering and freeze-drying to obtain biomass loaded with manganese; and mixing and grinding the biomass loaded with manganese and inorganic magnesium salt according to a mass ratio of 1:1-1.6, and then pyrolyzing at high temperature to obtain a carbon-based composite material loaded with manganese and magnesium. The raw material is easy to obtain, and the preparation process is simple. The material has a large specific surface area and rich pore structure, can provide rich adhesion reaction sites for microorganisms and sludge, has strong oxidation performance of generating hydroxyl radicals on the surface through advanced oxidation, can improve the degradation efficiency of nitrogen and phosphorus in water in cooperation with microorganisms and / or oxidants, has good removal effect, is highly reusable, green and environment-friendly, and has high application value.

The application discloses a kind of magnetic MCN-Au nano composite material and its preparation method and application, belong to chemical technical field.The application is based on the characteristics of magnetic nanometer material and gold nanoparticles, constructs a kind of magnetic MCN-Au nano composite material, and it is applied to Hg 2+ Colorimetric and temperature sensing detection.In the presence of H2O2, Hg 2+ Can be reduced to Hg 0 And deposited on the surface of Au NPs, show excellent peroxidase simulation activity, can efficiently catalyze H2O2 decomposition into ·OH, while TMB is oxidized into oxTMB with blue and ultraviolet absorption peak, at this time, 808nm infrared laser is used to irradiate solution, and detectable temperature signal can be generated.The application increases portable temperature detection on the basis of colorimetric, improves the accuracy and reliability of detection result, with good selectivity, high sensitivity, fast response and the like.