6results about How to "Improve binding tightness" patented technology

The invention provides a battery monomer, a negative pole piece, a battery device and a power utilization device, the battery monomer comprises the negative pole piece, the negative pole piece comprises a bottom coating arranged on at least one side of a negative current collector, and the bottom coating comprises a plurality of first bulges protruding back to the negative current collector and a first concave part between two adjacent first bulges; the bottom coating layer comprises a first binder; the active material layer is arranged on one side, opposite to the negative electrode current collector, of the bottom coating layer, the active material layer comprises a plurality of second bulges protruding towards the bottom coating layer and second concave parts between two adjacent second bulges, and the active material layer comprises a second binder; the first bulge is coupled with the second concave part, and the second bulge is coupled with the first concave part; the mass content a of the first binder in the undercoat layer is greater than the mass content b of the second binder in the active material layer. The dynamic performance and the cycle life of the battery monomer are relatively good; the battery device and the power utilization device at least have the above beneficial effects.

The utility model relates to a foundation pit supporting structure for hydraulic engineering, and relates to the technical field of foundation pits, the foundation pit supporting structure comprises a reinforcement cage and a fixing column fixedly mounted on the outer side of the reinforcement cage, and the fixing column is provided with a through hole for concrete to pass through. The underground diaphragm wall has the effect of improving the defects that the combination compactness between the concrete and the reinforcement cage is poor and the bearing capacity of the underground diaphragm wall is insufficient.

The utility model relates to the technical field of LED packaging, specifically relates to a kind of patch LED lamp pearl support structure, including support body, bowl cup, positive electrode conducting terminal, negative electrode conducting terminal, through-hole etc.The utility model overcomes the deficiency of prior art, by setting up metal filling through-hole on conducting terminal, establishes the efficient vertical heat dissipation path from chip to PCB board, effectively reduces the junction temperature of LED chip, improves luminous efficiency and life, the slope structure of bowl cup is combined with the high reflectivity coating in it, can more effectively reflect light and export, reduces internal absorption, improves brightness, metal through-hole enhances the embedding strength and combined tightness of metal terminal and plastic body, reduces the stress generated due to thermal expansion and contraction, improves the air tightness and anti-mechanical impact ability of product.

The present invention provides a waste heat recovery device and a waste heat recovery method, which belongs to the technical field of flue gas waste heat recovery. The device includes a high-temperature section air preheater, a medium-temperature section air preheater and a low-temperature section air preheater. The low-temperature section air preheater is connected to the chimney through a low-temperature flue gas outlet pipe, and a temperature sensor is arranged on the low-temperature flue gas outlet pipe; the flue gas inlet of the low-temperature section air preheater is connected to the flue gas outlet of the medium-temperature section air preheater through a medium-temperature flue gas inlet pipe; the low-temperature flue gas outlet pipe and the medium-temperature flue gas inlet pipe are connected through a return pipe; a stop valve is arranged on the low-temperature flue gas outlet pipe, and a return valve is arranged on the return pipe; the temperature sensor is set to 95±5℃, and the detected temperature is lower than the set temperature, the return valve is closed, and the stop valve is opened; the detected temperature is higher than the set temperature, the stop valve is closed, and the return valve is opened; the low-temperature section air preheater includes a low-temperature glass tube. The present invention reduces the final exhaust temperature to improve the thermal efficiency while extending the service life of the low-temperature glass tube.

This invention relates to a fiber-reinforced wood-plastic composite product and its preparation method, belonging to the field of polymer composite materials technology. The preparation method of the fiber-reinforced wood-plastic composite product of this invention involves reacting maleic anhydride-grafted polyethylene with 6,6-dimethylspiro[bicyclo[3.1.1]hept-2,2'-epoxyethylene] to obtain hydroxyl-grafted polyethylene. Then, the hydroxyl-grafted polyethylene is subjected to a substitution reaction with 4-bromopyridine-2,6-dicarboxaldehyde to obtain aldehyde-grafted polyethylene. Finally, the aldehyde-grafted polyethylene and straw powder grafted with an amino-polytetrahydrofuran silane coupling agent, and nano-mica sheets grafted with an amino-polyethylene glycol silane coupling agent, are subjected to a Schiff base reaction to obtain a polyethylene composite grafted with straw powder and nano-mica sheets. Finally, the composite is molded with polyethylene to obtain the final product.

The application discloses an anti-aging cable and belongs to the cable field. The anti-aging cable comprises a cable core and a shielding layer, a filling layer and a heat insulation layer. The shielding layer is wrapped outside the cable core. The filling layer is filled between the cable core and the shielding layer. The heat insulation layer is wrapped outside the shielding layer. The sheath comprises a PTFE outer sheath layer, a THV middle sheath layer and a PCTFE inner sheath layer. The PCTFE inner sheath layer is wrapped outside the braided layer. The THV middle sheath layer is wrapped outside the PCTFE inner sheath layer. The PTFE outer sheath layer is wrapped outside the THV middle sheath layer. The application has the effect of improving the anti-aging capability of the cable.