9results about How to "Reduce dissolution rate" patented technology

The invention relates to the technical field of petroleum processing, and particularly discloses a preparation method of a high-temperature corrosion inhibitor, which comprises the following steps: S1, uniformly mixing ferulic acid, diethylenetriamine, a solvent and a catalyst A in an inert atmosphere, heating to 150-200 DEG C, keeping the temperature for 4-6 hours, and cooling to obtain an imidazoline intermediate; s2, uniformly dispersing pyromellitic dianhydride in a solvent in an inert atmosphere, then adding the imidazoline intermediate and a catalyst B, uniformly mixing, heating to 180-220 DEG C, preserving heat for 6-8 hours, cooling, washing and drying to obtain the corrosion inhibitor, and the pyromellitic dianhydride is silanized pyromellitic dianhydride. The corrosion inhibitor prepared in the invention has good corrosion inhibition performance at high temperature.

The present invention relates to the field of sanitary equipment, and discloses a slow-release structure, a slow-release valve, and a water-using device. The slow-release structure includes a shell and a first seal, the shell defines a water passage, a first slow-release chamber, a connecting passage, and a second slow-release chamber that are connected in sequence, the first slow-release chamber and the second slow-release chamber are used to place water treatment agents respectively, and the first slow-release chamber is connected to the water passage; the first seal is slidably connected to the connecting passage, one end of the connecting passage is connected to the first slow-release chamber, and the other end is connected to the second slow-release chamber; the first seal abuts against the inner wall of the connecting passage to separate the second slow-release chamber from the first slow-release chamber, the end face of the first seal close to the first slow-release chamber can abut against the first-level water treatment agent, and move toward the first slow-release chamber as the first-level water treatment agent decreases, and the first seal can move to the first position where the first slow-release chamber is connected to the second slow-release chamber through the connecting passage. By storing the water treatment agent in partitions and grades, the water treatment agent is slow-released in batches.

This invention relates to the field of lithium battery technology, and in particular to a method for preparing a lithium-ion battery cell. The invention discloses a method for preparing a lithium-ion battery cell, comprising: first, preparing a positive electrode slurry containing modified titanium aluminum carbide, graphene oxide, etc., and a negative electrode slurry containing aminated carbon nanotubes, zinc aluminum spinel, etc., both processed according to specific proportions and processes; second, coating the positive and negative electrode slurries separately onto a current collector, and obtaining positive and negative electrode sheets through drying, coating with a coating agent, etc.; next, preparing a composite separator coated with a separator coating agent and curing it; finally, winding the separator in a positive-separator-negative-separator sequence, and obtaining a lithium-ion battery cell through drying, encapsulation, electrolyte injection, formation, etc.

The application discloses a deep coal seam resistance-dust suppression integrated eutectic base material and a preparation method thereof, which comprises components A and B; the component A is composed of a hydrogen bond donor and a hydrogen bond acceptor, and the molar ratio of the two is (1.5-2.5):1; the component B is composed of an antioxidant, a thickening agent and a surfactant, and the mass ratio of the three is 1:(1-6):(1-4); and the mass ratio of the components A and B is (15-25):1. Under the joint action of the above material, the material prepared by the application not only has the ability of inhibiting spontaneous combustion and dust suppression, forms a resistance-dust suppression integrated technology, does not affect the quality of raw coal, reduces the working procedure in the mine, and improves the systematicness and economy of disaster prevention and control.

The present application relates to the technical field of petroleum processing, and specifically discloses a method for preparing a high-temperature corrosion inhibitor, the preparation method comprising the following steps: S1: in an inert atmosphere, ferulic acid, diethylenetriamine, a solvent and a catalyst A are mixed evenly, heated to 150-200°C, kept warm for 4-6 hours, cooled, and an imidazoline intermediate is obtained; S2: in an inert atmosphere, pyromellitic anhydride is evenly dispersed in a solvent, and then the imidazoline intermediate and catalyst B are added and mixed evenly, heated to 180-220°C, kept warm for 6-8 hours, cooled, washed, and dried to obtain a corrosion inhibitor; the pyromellitic anhydride is silylated pyromellitic anhydride. The corrosion inhibitor prepared in the present application has good corrosion inhibition performance at high temperatures.

The invention discloses weeding granules based on astragalus sinicus and a preparation method of the weeding granules. The preparation method comprises the following steps: (1) preparing astragalus sinicus leach liquor; (2) preparing an astragalus sinicus decomposition liquid; (3) preparing hydrogel; (4) preparing starch-based latex; and (5) preparing the weeding granules. Allelochemicals in the astragalus sinicus extract liquid and decomposition liquid are used for inhibiting germination and growth of weeds, the weeding granules have an obvious inhibiting effect on growth of the weeds, and the weeding granules do not contain chemical herbicide components, do not cause excessive burden to soil and are more natural and environmentally friendly.

The present application relates to the technical field of electrode material, and particularly relates to a preparation method of seamless integrated zinc negative electrode material.In the present application, a three-dimensional porous structure vertical graphene is constructed on the surface of a substrate, and the surface of the vertical graphene is functionally treated to serve as a zinc plating framework, so that zinc is uniformly loaded on the surface of the substrate, and then a MOF protective layer is coated on the surface of the vertical graphene, thereby obtaining the seamless integrated zinc negative electrode material.In the present application, the surface functional treatment introduces hydrophilic functional groups to the surface of the vertical graphene to enhance the interaction and uniform electric field distribution;the introduction of the MOF protective layer does not destroy the surface morphology, and the thin and uniform MOF protective layer can also exclude large-size charged ion complexes.

The invention relates to the technical field of oil and gas well cementation, in particular to a geopolymer activator, and aims to solve the problem of insufficient adjustability of thickening time of fly ash geopolymers excited by reactive excitants such as sodium carbonate and calcium hydroxide due to too high dissolution rate of calcium hydroxide. The geopolymer activator provided by the invention comprises the following components in parts by weight: 10-12 parts of high-temperature burnt calcium oxide; 10 to 12 parts of medium-temperature burnt calcium oxide; 9-11 parts of low-temperature burnt calcium oxide; 40 to 60 parts of sodium carbonate; and 5-31 parts of sodium sulfate. The geopolymer activator has the advantages that the release rate is low, and the thickening time of the geopolymer prepared from the geopolymer activator is easy to regulate and control, and can well meet the operation construction of oil and gas well cementing.

The present invention discloses a solvent-based thermoplastic polyurethane adhesive material, the raw materials of which include polyester polyol and diisocyanate, and the isocyanate index R is 0.99-1.04; the diisocyanate includes meta-isomers and para-isomers, and the meta-isomer accounts for 2.5-5% of the total mass of the diisocyanate. The isomer content of the diisocyanate in the raw material of the solvent-based thermoplastic polyurethane adhesive material of the present invention is under a specific ratio, which can effectively shorten the dissolution rate of the adhesive material in the solvent after activation while having high peel strength and heat resistance, effectively save the time required for the solvent-based thermoplastic polyurethane adhesive material to dissolve in the actual production process, and the improvement of the dissolution rate will not significantly affect the final adhesive key properties such as viscosity, peel strength and heat resistance.