8 results about "Ion complexation" patented technology

The application discloses a kind of low-carbon cementing material by waste incineration fly ash excited ore powder and preparation method thereof, by weight percentage, including the following components: modified waste incineration fly ash 8~12%, ion complex component 1~3%, composite shrinkage component 2~6%, ore powder 55~65%, water 23~28%.Preparation method includes the following steps: S1, preparation modified waste incineration fly ash, ion complex component, composite shrinkage component;S2, modified waste incineration fly ash, ion complex component, composite shrinkage component, ore powder, mixing water, fully mixed and stirred evenly, can obtain the low-carbon cementing material by waste incineration fly ash excited ore powder described in the application.In the aspect of component design, the application is environmentally friendly, low cost, in the performance aspect, the flow rate can be adjusted, the mechanical properties are excellent, the volume shrinkage is small.

The application discloses a copper plating composition and a chemical copper plating process, and relates to the field of copper plating compositions, which is composed of the following components: a copper salt providing divalent copper ions; a complexing agent for complexing the divalent copper ions; a stabilizer for stabilizing the copper plating composition, which is selected from at least one of the group consisting of 2,2'-dipyridyl, potassium selenocyanate, potassium thiocyanate and 2-mercaptobenzimidazole; a reducing agent for reducing the complexed divalent copper ions to metallic copper; an alkaline adjusting agent for adjusting the pH value of the composition to an alkaline range suitable for chemical copper plating; and a solvent. The process stability and product yield are improved: through the optimized combination of the core stabilizer, the complexing agent and the reducing agent, the self-decomposition of the copper plating bath is effectively inhibited, the process stability is significantly enhanced, the incidence of key defects such as backlight defects in the metalization of the circuit board hole is greatly reduced, and the high yield of the final product is ensured.

The present invention relates to an antistatic polycarbonate composition having good cleanliness and a preparation method therefor. The antistatic polycarbonate composition comprises a polycarbonate, an antistatic agent, an ion trapping agent, a compatibilizer, a toughening agent, an antioxidant, a lubricant, and a light stabilizer. In the present invention, a crown ether is incorporated into an antistatic polycarbonate. Under the action of dipole-charge, a negatively charged oxygen atom of the crown ether can be complexed with positively charged metal cations to form a relatively stable complex. By means of the metal ion trapping ability of the unique cyclic structure of the macromolecular crown ether, the ion precipitation performance of the final product is improved, thereby obtaining an antistatic polycarbonate composition having good cleanliness.

This application discloses an all-vanadium redox flow battery electrolyte, its preparation method, and its application, relating to the field of flow batteries. The all-vanadium redox flow battery electrolyte contains vanadium ions, sulfate ions, a vanadium ion complexing stabilizer, and a passivating agent; the concentration of vanadium ions is >2.5 mol / L; the vanadium ion complexing stabilizer includes a vanadium ion complexing agent and a vanadium ion stabilizer, with a molar ratio of vanadium ion complexing agent, vanadium ion stabilizer, and vanadium ions of (0.2~1.2):(0.07~0.6):4; the concentration of the passivating agent is 0.04~2 mol / L. Adding the vanadium ion complexing stabilizer and passivating agent to the electrolyte increases the concentration of vanadium ions and effectively reduces the direct contact between pentavalent vanadium ions and the electrode. Furthermore, the passivating agent forms a passivation film on the electrode surface to block pentavalent vanadium ions, thereby achieving a vanadium ion concentration above 2.5 mol / L, suitable for higher operating voltages and higher operating temperatures.

This invention relates to a protective system and its preparation method for enhancing the durability of concrete in coastal bridges. The protective system is applied to concrete containing cementitious materials, aggregates, and water. The cementitious materials include functional admixtures, such as a proprietary composite modified core-shell powder, complexation reaction modified mineral powder, and zeolite powder-supported gypsum whisker composite powder. This invention utilizes a dual-response film-forming mechanism of "secretion-triggered ion complexation." When biological secretions come into contact with the concrete surface, the core-shell powder releases alkaline substances to neutralize organic acids. Simultaneously, the complexation reaction modified mineral powder undergoes a complexation reaction with metal ions in the secretions, forming an organic-inorganic interlocking protective film. This film then fuses with the subsequently grown shellfish shell to construct a dual protective structure. This invention provides stable protection, enhancing the concrete's resistance to chloride ion penetration and sulfate attack, effectively inhibiting steel corrosion, and extending the service life of concrete in coastal bridges.

The invention belongs to the field of styryl copolymer materials, and relates to a functionalized styryl copolymer / metal ion hybrid material and a preparation method thereof. The hybrid material is composed of a styryl copolymer main chain A and a side group functional group, wherein the side group functional group comprises a proton-containing acidic substituent group B and a proton-containing acid amination metal ion complexing crown ether group C; wherein the molar content of the B is 1-55 mol% and the molar content of the C is 0.01-1.0 mol% based on 100 mol% of the total molar content of the structural unit of the A. According to the functionalized styryl copolymer / metal ion hybrid material, the proton-containing acidic substituent group B and the proton-containing acid aminated metal ion complexing crown ether group C are introduced, so that compared with a styryl copolymer material, the mechanical property and the optical property are obviously improved.

This invention provides a method for modifying hydrophilic polysulfone / polyethersulfone hollow fiber membranes based on an in-situ interfacial rearrangement-ion complexation mechanism, mainly comprising the following steps: (1) subjecting polysulfone / polyethersulfone to mild swelling aqueous phase treatment; (2) using hydrophilic polymers for in-situ enrichment at the interface; and (3) using polyvalent metal ions and polyamine-polyacid ion pairs for complexation. The advantage of this invention is that the pure water flux (PWF) of the separation membrane prepared by this invention, at an operating pressure of 0.1 MPa, is increased from 300 L·m⁻¹ before modification. ‑2 ·h ‑ Increased to 280–320 L·m ‑2 ·h ‑ Meanwhile, the membrane flux recovery rate (CIP) has been significantly improved from 60–70% to no less than 85%; in terms of BSA retention performance, it has been improved from 90% to ≥92%; more importantly, in a continuous operation test of up to 500 hours, the membrane performance degradation has been significantly reduced from 25% to less than 12%, demonstrating excellent long-term stability and antifouling ability.

This invention discloses a three-coordinate complexing agent, an all-iron flow battery negative electrode electrolyte, and a preparation method thereof, comprising a first complexing agent, a second complexing agent, and a third complexing agent; wherein the first complexing agent is any one of triethanolamine, N,N,N′,N′-tetra(2-hydroxyethyl)ethylenediamine, and triisopropanolamine; the second complexing agent is any one of N,N,N′,N′-tetra(2-hydroxyethyl)ethylenediamine, N-phosphonomethyliminodiacetic acid and its salt, triisopropanolamine, and triethanolamine; the first complex and the second complex are different substances; the third complexing agent is polyethylene glycol; the three-coordinate complexing agent obtained by this invention significantly improves the iron ion complexation saturation, inhibits side reactions such as hydrogen evolution, hydrolysis, iron deposition, and ligand transmembrane reactions, while significantly reducing the viscosity and flow resistance of the electrolyte, reducing pump consumption, accelerating ion diffusion and mass transfer, effectively reducing impedance and battery polarization, thereby improving coulombic efficiency, voltage efficiency, and energy efficiency.