37results about How to "Conducive to the realization of large-scale industrial production" patented technology

The invention relates to a high-early-strength non-alkali liquid quick-setting agent and its preparation method and application, belonging to the technical field of building material admixtures. The quick-setting agent is composed of the following raw materials in weight percent: 40-50% of polyaluminum sulfate, 5-10% of metakaolin, 5-15% of nano-silica sol, 3-6% of alcohol amine, 1-4 % of organic acid, 0.01-0.05% of thickener, 0.01-0.05% of dispersant, and the balance is water. On the basis of meeting the national standard "Accelerator for Shotcrete" (GB / T35159-2017), the accelerator can also effectively improve the compressive strength of cement mortar in one day, reaching more than 20MPa, and some cement mortar can resist compression in one day The strength can even reach above 25MPa.

The invention relates to a positive electrode material of a magnesium ion battery and a preparation method of the positive electrode material. The molecular formula of the positive electrode material is Mg(1-x)-SrxZnyFe(1-y)SiO4, wherein x is greater than 0 and is smaller than or equal to 0.05; y is greater than 0 and is smaller than or equal to 0.03. The preparation method comprises the following steps: adding ethanol into a magnesium source compound, a strontium source compound, a zinc source compound, an iron source compound and a silicon source compound, performing ball-milling, drying, heating to 350-500 DEG C in the presence of argon, keeping the temperature for 1-2 hours, continuously heating to 800-1,200 DEG C, and keeping the temperature for 2-8 hours, thereby obtaining the positive electrode material. The preparation process of the positive electrode material is simple to operate, easy to control and beneficial to achieving on-scale industrial production, and the positive electrode material of the magnesium ion battery is relatively high in reversible capacity and relatively high in large-current charge and discharge performance.

The invention discloses a hexagonal flaky manganese lithium ion sieve adsorbent and a preparation method thereof. The method includes: adding a manganese source and a lithium source into water, and stirring to obtain first mixed solution; adding an organic amine compound into the first mixed solution, and stirring to obtain second mixed solution; adding the second mixed solution into a microwave reactor, performing reaction for 20-45min at 150-180 DEG C, and subjecting solid and liquid in the second mixed solution to solid-liquid separation to obtain LiMnO2 particles; calcining the obtained LiMnO2 particles for 3-6h at 450-600 DEG C to obtain Li1.6Mn1.6O4 hexagonal flaky manganese lithium ion sieve adsorbent. A microwave hydrothermal reaction method is adopted for preparing the hexagonal flaky manganese lithium ion sieve adsorbent, organic amines are adopted as a reducing agent and a structural regulating agent for growth regulation, and simplicity of selected raw materials and a preparation process and high purity, high yield, particle size uniformity and stable performances of an obtained product are realized.

The invention relates to a composite oxide glass-ceramic, an insulating dielectric slurry, a preparation method and application thereof, and belongs to the technical field of thick film circuits. The composite oxide glass-ceramic is SiO 2 -B 2 o 3 -Cs 2 O‑P 2 o 5 -MnO 2 ‑Co 2 o 3 -Ta 2 o 5 -CeO 2 -Er 2 o 3 Composite oxide glass-ceramics; the insulating dielectric slurry includes an organic carrier and an inorganic main phase composed of composite oxide glass-ceramics, and its preparation method is: mixing raw materials according to the proportion, and heating the mixture to 1100-1700°C , keep warm for 1‑24h, then water quenched, dried, ball milled, mixed with an organic carrier in proportion, and finally rolled repeatedly with a three-roll mill to obtain a thick film circuit insulation dielectric slurry, which is used for the large size of stainless steel substrates Power thick film circuit insulation dielectric layer has excellent properties such as large expansion coefficient, good adhesion, high insulation and resistance, high breakdown voltage and low leakage current.

The invention discloses an amorphous glass powder, and a preparation method and applications thereof. The amorphous glass powder comprises following raw materials, by mass, 10 to 60% of BaO, 1 to 30% of Al2O3, 5 to 40% of B2O3, 5 to 40% of P2O5, 1 to 10% of MoO3, 1 to 5% of NiO, and 1 to 10% of Nd2O3. The preparation method comprises following steps: the raw materials are mixed at the ratio; the mixture is heated to 1200 to 1650 DEG C, and the temperature is kept for 0.5 to 8h; and the mixture is subjected to water quenching, and is grinded into powder with a diameter of 0.5 to 5 microns by ball milling so as to obtain the amorphous glass powder. A slurry made of the amorphous glass powder and an organic carrier possess excellent adhesiveness on stainless steel substrates; the breakdown voltage of the slurry is high, and insulating properties of the slurry are excellent; and the slurry is capable of meeting the requirements for thick film circuit insulating medium materials of high-power stainless steel substrates.

The invention discloses a thick-film circuit resistor paste for stainless steel substrates and a preparation method thereof. The thick-film circuit resistor paste is composed of a solid phase component and an organic liquid phase, and the solid phase component includes a conductive phase and a microcrystalline The glass phase, the conductive phase is composed of Cu2O‑GeO2 composite + Cu powder, the glass-ceramic phase is SiO2‑Al2O3‑B2O3‑CaO‑ZrO2‑Co2O3 composite, and the organic liquid phase is terpineol, tributyl citrate, ethyl acetate Mixed liquid phase of base cellulose, span 85, 1,4-butyrolactone, hydrogenated castor oil. The preparation method is as follows: firstly, the conductive phase and the glass-ceramic phase are respectively prepared, then the organic liquid phase is prepared, and finally the conductive phase, the glass-ceramic phase and the organic liquid phase are mixed and prepared to obtain the resistance paste.

The invention relates to a doped modified lithium ion battery vanadate negative electrode material and a preparation method thereof, belonging to the field of lithium ion battery material preparation. The doped modified lithium ion battery vanadate negative electrode material is composed of iron source compound, antimony source compound, vanadate source compound and fluorine source compound in molar ratio Fe:Sb:VO 4 3‑ : F=x:y:1:z composition, wherein x=0.5-0.9, y=0.1-0.5, z=0.01-0.1. With vanadate as the main skeleton, ferric ions and antimony ions with different ionic radii and electronic structures and fluorine ions with smaller radii and stronger electronegativity are doped with each other to change the electric field distribution in the unit cell and expand the lithium ions in the crystal. The intercalation channel improves the migration rate of lithium ions, buffers the impact of lithium ions on the crystal structure due to crystal volume changes during the intercalation and extraction process, thereby improving the lithium storage performance of the material and greatly improving the performance of lithium-ion batteries doped with vanadate negative materials. cycle life.

The invention relates to the field of capacitor manufacturing, and discloses a method for preparing a porous copper foil for a lithium ion capacitor current collector. Copper foil is used as a raw material, and a direct current electrolytic oxidation method is adopted. The steps are as follows: A) using inert graphite as a cathode, and using the The copper foil is used as the anode to pretreat the copper foil to make holes; B) the copper foil after the above treatment is cleaned; C) after cleaning, the copper foil is electrolytically expanded with the inert graphite as the cathode and the copper foil as the anode. D) After the above-mentioned treated copper foil is subjected to secondary cleaning, post-treatment electrolysis, and three cleanings, the porous copper foil is produced. The method of the invention has simple process and low cost, and is suitable for industrial production.