52results about How to "Uniform heat generation" patented technology

The invention discloses a cold and hot compress bag for medical use, which comprises two parts of a cold compress cavity and a hot compress cavity, and is characterized in that a barrier plate is arranged between the cold compress cavity and the hot compress cavity, and the two cavities pass through Sewing to form a cold and hot compress bag body; the front side of the cold compress cavity is fixed with a water bag; the rear of the water bag is provided with a refrigerator; the hot compress cavity is filled with large grains of coarse salt; the The inner part of the hot compress cavity is fixedly sewn with a heating wire; the side of the cold and hot compress bag body is fixedly connected with a control panel; the control panel is provided with a cooling adjustment knob and a heating adjustment knob; the cold and hot compress Both sides of the bag body are sewn with elastic bands. The invention has the advantages of simple structure, convenient installation, stable structure, long service life, low cost, functions of cold compress and hot compress, hygienic and healthy, reusable, and adjustable temperature, which can meet the actual needs for better comfort.

The invention provides a method for preparing a titanium nanosheet / graphene-based fiber membrane, comprising the following steps: preparing a pre-stripping dispersion of titanium powder, preparing a mixture of titanium powder and graphene oxide, and preparing a titanium nanosheet / graphene oxide Dispersion, spinning and finishing. The preparation method of the titanium nanosheet / graphene-based fiber membrane of the present invention can not only assist the stripping of titanium powder into titanium nanosheets, but also help the mixing of titanium nanosheets and graphene oxide by adding graphene oxide in the preparation process of titanium nanosheets . In the spinning process, titanium nanosheets, graphene and carbon black are further loaded onto the fiber, which has the advantages of large specific surface area, strong infrared radiation, high thermal conductivity, good flexibility, and remarkable bending resistance. The PAN polymer makes the fiber have the advantages of high mechanical strength, medium and high temperature resistance, etc. The invention also provides a titanium nanosheet / graphene-based fiber membrane.

The invention discloses a composite negative electrode sheet with a rapid heating function, and an electric core and a battery using the same. The composite negative electrode sheet includes two negative electrode sheets and at least one layer of thermal resistance sheet, and the thermal resistance sheet and the negative electrode sheet are separated by a diaphragm. When the number of layers of the thermal resistance sheet is more than two layers, the adjacent thermal The resistance plates are separated by a diaphragm, and at least one tab of the heat resistance plate is arranged on the heat resistance plate. The composite negative pole piece of the present invention has a novel structure. By connecting the tab of the thermal resistance plate with an external power supply or a built-in power supply, rapid heating of the composite negative pole piece can be realized after power-on. Uniform heat is conducive to better control of the voltage window of the battery cell. Most of the heat generated can accurately increase the temperature of the pole piece, with high thermal efficiency. Moreover, the composite negative pole piece can improve the capacity efficiency and cycle performance of the battery cell.

The invention belongs to the technical field of functional materials, in particular to a compatible stealth anti-icing material and its preparation method and application. The compatible stealth anti-icing material provided by the present invention includes an insulating and heat-insulating layer, a patterned heating layer, an insulating and heat-conducting layer, and a hydrophobic layer that are sequentially stacked; the patterned heating layer has a patterned hollow structure. In the present invention, the patterned heating layer is conducive to making part of the electromagnetic wave generate eddy current and resonance in the patterned hollow structure and be absorbed by the compatible stealth anti-icing material, and a part of the electromagnetic wave is freely diffracted, which is conducive to reducing the radar scattering cross section; At the same time, when current is applied, heat can be generated quickly and uniformly, achieving the effect of electric heating anti-icing and deicing. Through the synergistic effect of various structures, the present invention is beneficial to make the equivalent impedance wave compatible with the stealth anti-icing material nearly consistent with the impedance wave of the air, reduce the reflectivity of electromagnetic waves, improve the transmittance of electromagnetic waves, and ensure the anti-icing effect under the condition Realize electromagnetic wave stealth.