4results about How to "Increase porosity" patented technology

This invention discloses a ternary lithium battery separator slurry and its preparation method, belonging to the field of lithium battery technology. It comprises the following raw materials in parts by weight: 50-70 parts composite binder, 200-300 parts N-methylpyrrolidone, 0.4-0.6 parts modified graphene oxide, 60-65 parts aromatic additives, 2-5 parts ceramic powder, and 300-400 parts DMF. The preparation method includes the following steps: dissolving the composite binder in N-methylpyrrolidone, then adding modified graphene oxide, reacting, precipitating with methanol and filtering, washing and drying the filter residue with methanol and water, then dissolving it in DMF, and ultrasonically obtaining the ternary lithium battery separator slurry. The composite binder is used to improve the thermal stability of the polymer, and its incompatibility with aromatic additives and the addition of modified graphene oxide can improve the ion permeability of the lithium battery.

The utility model discloses a movable soil compaction device based on a vacuum preloading technology. The device comprises a sand layer laid on the top of to-be-compacted soil, fixing blocks are fixed to the sand layer, a sealing film is attached to the surfaces of the fixing blocks, the sealing film extends to the surface of the sand layer on the top of the to-be-compacted soil, a fixing mechanism is arranged at the position, corresponding to the top ends of the fixing blocks, of the upper side of the sealing film, and an insertion pipe is fixed into each fixing block; a drainage pipe capable of freely moving is arranged in the insertion pipe in a sleeved mode, an O-shaped ring is embedded in the outer wall of the drainage pipe, and the O-shaped ring is attached to the inner wall of the insertion pipe; the top end of each drainage pipe is communicated with a connecting pipe, each connecting pipe is communicated with a branch pipe, each branch pipe is provided with a negative pressure meter and a valve, and all the branch pipes are jointly communicated with a negative pressure pipe used for vacuum suction. The drainage pipe is arranged to be movable, and when the drainage pipe is blocked, the drainage pipe can be maintained or replaced in time.

This invention discloses a high-humicity microbial fertilizer and its preparation method, belonging to the field of microbial fertilizer technology. The method involves adding a mixed carrier, a protective agent, and fermentation broth to a stirred tank in a specific ratio, followed by shaking and adsorption, filtration, and drying with forced air until the moisture content of the absorbent resin powder reaches 30-35%. The powder is then continuously granulated using a granulator and sieved to obtain microbial agent granules with a particle size of 2-5 mm. The microbial agent granules and sodium humate are mixed at a mass ratio of 1-2:10 to obtain the high-humicity microbial fertilizer. The aggregated short fibers, under the adhesive and physical entanglement effects of the protective agent, increase the internal space of the microbial agent granules while improving structural stability, providing a stable growth and reproduction environment for microorganisms, and improving the long-term storage of the fertilizer and the survival rate of microorganisms after application. The enlarged microbial agent granules provide support, increasing soil looseness and providing a good respiratory environment for crop roots.

The invention relates to the technical field of soil improvement, in particular to a forestry soil ecological restoration agent and a preparation method thereof. The repairing agent is prepared from the following raw materials in parts by weight: 20-25 parts of garden waste ferment powder, 8-10 parts of macromolecular water-absorbing fiber hair balls, 1-3 parts of a 5mg / L graphene oxide solution, 5-10 parts of humic acid, 5-10 parts of oyster calcium powder, 5-6 parts of sulfydryl modified nano silicon dioxide and 3-5 parts of a compound microbial preparation. The soil ecological restoration agent provided by the invention can effectively improve the conditions of physical, chemical and biological processes of soil, improve the absorption performance and buffer performance of the soil, eliminate soil obstacle factors, and improve the air permeability and organic matter content of the soil.