17results about How to "Reduce dissociation" patented technology

The present application relates to the field of filling glue, and in particular to a high-flowability epoxy resin encapsulated bottom filling glue and a preparation method thereof. The high-flowability epoxy resin encapsulated bottom filling glue, in parts by mass, has the following raw materials: 40 to 60 parts of epoxy resin composition, 10 to 15 parts of active diluent, 20 to 25 parts of curing agent, 1 to 2 parts of accelerator, 20 to 35 parts of modified filler, 1 to 4 parts of coupling agent, 1 to 1.5 parts of leveling agent, and 1 to 3 parts of flame retardant. The epoxy resin encapsulated bottom filling glue prepared in the present application not only has good stress impact resistance, mechanical properties and flow properties, but also can maintain excellent moisture resistance, water resistance, corrosion resistance, acid and alkali resistance and other properties, thereby greatly improving the application performance of the filling glue and having very excellent application prospects.

The invention relates to the field of finish paint, in particular to chemical-resistant electroplating finish paint as well as a preparation method and application thereof. The chemical-resistant electroplating finish paint is prepared from the following raw materials in parts by mass: 30 to 50 parts of modified acrylate, 15 to 30 parts of epoxy resin, 5 to 10 parts of modified particles, 3 to 6 parts of photoinitiator, 2 to 3 parts of flatting agent, 0.5 to 1 part of defoaming agent, 3 to 10 parts of pigment and 20 to 40 parts of solvent. The finally prepared electroplating finish paint not only has excellent durability and chemical resistance, but also can be further improved in water resistance, aging resistance and mechanical properties, so that the performance requirements of the existing electroplating finish paint are effectively met, and the electroplating finish paint can be effectively applied to the field of cosmetic packaging and has wide application prospects. And meanwhile, the resistance to chemical substances (such as perfume, emulsion and the like) is also effectively improved, and the product has a very excellent application prospect.

The invention relates to an electrochemical biosensor and application and a detection method and device thereof, zwitterionic DMAPS provides strong antifouling performance for a sensing interface, non-specific adsorption of biomolecules such as protein and cells is effectively prevented, click chemistry is adopted as a sensing strategy, the integrity of a biomolecule structure is maintained, dissociation of an aptamer / CA72-4 is effectively reduced, and the biosensor can be used for detecting the biomolecules. The surface protein binding efficiency is improved, and the biosensor prepared by the method is used for a real patient blood sample and can realize direct and rapid electrochemical detection of CA72-4.

The present application relates to the field of hot melt adhesives, and in particular to a hot melt adhesive and a preparation method thereof. A hot melt adhesive, in parts by mass, comprises raw materials including: 5 to 12 parts of polyolefin elastomer, 40 to 60 parts of amorphous plastomer, 25 to 40 parts of tackifying resin, 10 to 20 parts of modified particles, 1 to 3 parts of antioxidant, 5 to 15 parts of lubricant, 1 to 5 parts of softener, 1 to 4 parts of cross-linking agent, and 1 to 2 parts of initiator. The hot melt adhesive prepared in the present application not only has good adhesion and mechanical properties for difficult-to-bond substrates such as PP / PE, but also can maintain its own excellent aging resistance, corrosion resistance, and waterproof and moisture resistance, meeting the existing automotive industry application requirements for the performance diversity of hot melt adhesives, and has very excellent application prospects in the automotive field.

The present invention provides a non-aqueous liquid electrolyte that can undergo capacity loss during continuous charging of a cell. A non-aqueous liquid electrolyte containing oxalato-complex anions (A), LiPF6, a symmetrical chain-form carbonate, and a chain-form carboxylic acid ester (C) in which the viscosity at 25°C is 0.01-0.47 cP, wherein the non-aqueous liquid electrolyte is characterized in that: the ratio (A / B) of the amount (mass) of oxalato-complex anions (A) to the amount (mass) of PF6- anions (B) is 0.0001-0.30; and the total amount of the symmetrical chain-form carbonate and the chain-form carboxylic acid ester (C) in which the viscosity at 25°C is 0.01-0.47 cP, relative to the total amount of the non-aqueous liquid electrolyte, is 1-45 mass%.

The disclosure relates to a bioactive molecule conjugate, preparation methods and use thereof, particularly relates to a novel bioactive molecule conjugate obtained by improving coupling of the drug and the targeting moiety in an ADC or SMDC, as well as its preparation method and use in the manufacture of a medicament for the treatment of a disease associated with an abnormal cell activity.

A method for improving stability of a black corn anthocyanin-protein compound comprises the following steps: adding a stabilizer which is glucose or maltodextrin into a black corn anthocyanin-protein compound solution; when the stabilizer is glucose, the concentration of the glucose in the solution is 1-5%; when the stabilizer is maltodextrin, the concentration of the maltodextrin in the solution is 1-3%. According to the invention, maltodextrin or glucose is adopted as a stabilizer, so that the stability of the black corn anthocyanin-protein compound is improved. The maltodextrin is combined with the protein part or the anthocyanin part in the compound, so that the structure of the compound is more compact and stable, dissociation and denaturation of the compound in the external environment are reduced, the combination state between the anthocyanin and the protein is kept, the stability of the anthocyanin is indirectly protected, meanwhile, the stability of the protein structure is facilitated, and the stability of the protein structure is improved. Therefore, the protection effect of the protein on the anthocyanin can be better exerted.

The invention relates to the technical field of substance purification, in particular to a purification method of sialylated oligosaccharide. The purification method of the sialylated oligosaccharide, provided by the invention, not only is simple and feasible in process, but also reduces dissociation and browning of the sialylated oligosaccharide in the purification process, effectively reduces the loss of the sialylated oligosaccharide and improves the yield of the sialylated oligosaccharide; the sialylated oligosaccharide prepared by the purification method can realize higher purity and yield, and has better application prospect in industrial production.

The disclosure relates to a bioactive molecule conjugate, preparation methods and use thereof, particularly relates to a novel bioactive molecule conjugate obtained by improving coupling of the drug and the targeting moiety in an ADC or SMDC, as well as its preparation method and use in the manufacture of a medicament for the treatment of a disease associated with an abnormal cell activity.

The invention discloses a photocatalytic material with a heptazine-triazine structure as well as a preparation method and application of the photocatalytic material. Relates to the field of photocatalysis. The photocatalytic material with the heptazine-triazine structure comprises a boron-doped heptazine-triazine heterojunction structure, and the content of a triazine unit in the heptazine-triazine heterojunction structure is higher than that of a heptazine unit; the raw material of the boron-doped heptazine-triazine heterojunction structure comprises the following components: a boron-containing carbon nitride precursor and alkali metal salt, the raw materials of the boron-containing carbon nitride precursor comprise melamine and a boron source. The photocatalytic material shows excellent performance under visible light, the H2O2 yield can reach 2423 mol L <-1 > h <-1 > (44.1 times of that of traditional carbon nitride), and the hydrogen evolution rate is increased by 70 times; the apparent quantum yield of 450nm single wavelength reaches 14.4%, and the visible light absorption range is effectively expanded; and after continuous 24-hour illumination, the activity is not attenuated, and the stability is excellent.

The invention discloses a sodium-ion battery electrolyte of a low-fluoro phosphate system and a sodium-ion battery, the sodium-ion battery electrolyte comprises sodium salt, a solvent and an electrolyte additive, the solvent is a low-fluoro phosphate solvent, the low-fluoro phosphate ester solvent is one or more than two of trimethyl phosphate, triethyl phosphate and / or tripropyl phosphate, wherein the trimethyl phosphate, the triethyl phosphate, the triethyl phosphate and the tripropyl phosphate are 1, 2, 3, 4, 5, 6-hexafluoro respectively. The sodium-ion battery electrolyte of the low-fluorophosphate system and the sodium-ion battery have the characteristics of high conductivity, strong compatibility and good safety.

This invention discloses a wide-temperature-range, long-life sodium-ion battery electrolyte, its preparation method, and its applications. The invention uses sodium perchlorate as the sodium salt, synergistically with low-viscosity, low-melting-point methyl acetate to ensure high ionic conductivity of the electrolyte over a wide temperature range. Simultaneously, dimethyl sulfite and fluoroethylene carbonate synergistically construct an inorganic-rich SEI film, significantly improving interfacial stability and cycle performance. The Na||NVP battery, after reversible charge-discharge at 60°C, maintained a discharge specific capacity retention of 88.33% of the initial capacity after 400 stable cycles. Under low-temperature conditions, reversible charge-discharge at currents of 0.1C and 0.3C resulted in stable cycles of 300 and 380 cycles, respectively. The preparation method of this invention is simple, low-cost, easy to implement, requires minimal equipment investment, and is suitable for mass production.

The invention discloses a semi-quantitative method of polymer protein, which comprises the following steps: cross-linking the polymer protein by using formaldehyde to enhance the stability and durability of the polymer protein; meanwhile, the electrophoresis method is improved, and the electrophoresis time and operation steps are saved. Compared with a Native-PAGE method, when the method is used for detecting the polymer protein, a result map with higher resolution can be obtained, the protein spectrum band boundary is more obvious, degradation caused by background miscellaneous bands and the operation process is less, the trailing condition is reduced, and the accuracy of semi-quantitative analysis is improved while the resolution is improved. Meanwhile, the method is simple and convenient to operate, time is saved, and an electrophoresis method which is convenient for a general laboratory to quickly, simply and conveniently carry out semi-quantification on the polymer protein is formed.

The present invention relates to the technical field of biological sample extraction, and discloses a method for extracting plasma free DNA. 3+ There are uncoupled electrons in the 4f orbit, which present paramagnetism. The saturation magnetization intensity of the modified magnetic nano-microspheres is relatively high, and the effect of rapid separation can be achieved under the action of a very small magnetic field. By introducing Schiff base and quaternary ammonium salt structure on the surface of chitosan, the winding, coating and connection of magnetic nano-particles are achieved, and the Schiff base is combined with DNA molecules through π-π stacking, thereby achieving the control of DNA adsorption; the cationic quaternary ammonium salt chitosan can effectively combine with DNA with anions, and fix the DNA on the surface of the magnetic microspheres through electrostatic action, thereby achieving the purpose of separation and purification; the free DNA extraction method provided by the invention can prevent the free radicals from destroying the free DNA structure, ensure the structural integrity of the free DNA, and has a simple process and is suitable for large-scale promotion and application.

The invention belongs to the technical field of self-assembled microsphere arrays, and particularly relates to a pore-adjustable and stable self-assembled microsphere array as well as a preparation method and application thereof. The microsphere array disclosed by the invention is self-assembled in a manner of combining electrostatic mediation and covalent coupling, and contact among the microspheres is guided by virtue of electrostatic interaction, so that guidance is provided for realizing controllable covalent coupling among the microspheres by virtue of Schiff base reaction. The combination of covalent coupling and electrostatic force can improve the flexibility of the microsphere array and the stability of the combination between the microspheres, so as to improve the stability of pores between the microspheres, reduce the collapse of the microsphere array, provide a good and controllable three-dimensional space for the creeping growth of cells, and facilitate the promotion of wound healing and growth. The self-assembled microsphere array is suitable for application modes such as smearing or injection, and the scene applicability is greatly improved.

A plasma cooling chamber spray structure for removing process waste gas from production equipment allows individual or mixed process waste gases to enter a dissociation chamber of a waste gas plasma processor via separate gas pipelines. A vertical plasma body is located in the center of the dissociation chamber, which, in conjunction with the introduction of working gas nitrogen, dissociates the tail gas containing the special gas generated in the dissociation chamber at high temperature. A cooling chamber is connected to the rear end of the dissociation chamber, and the cooling chamber has an outer cylinder connected to the dissociation chamber and a short section relative to the tail end of the heating flame section of the plasma body. An inner cylinder of an outer cylinder is characterized by having multiple annularly arranged spray nozzles on the inner edge surface of the outer cylinder, each spray nozzle spraying water onto the outer edge surface of the inner cylinder to provide water cooling in addition to air cooling for the cooling chamber. Because the entire cooling chamber is cooled earlier, the dissociation of nitrogen at high temperature is reduced, thus greatly reducing the generation rate of NOx (gaseous nitrogen oxides) in the cooling chamber. Consequently, the cooling chamber can be shortened, thereby reducing the overall length and installation cost of the plasma processor.

The present application relates to the technical field of food contact packaging material preparation, and discloses a preparation method of a food contactable heat preservation and insulation carton of spray coating aerogel. After the surface of a paper base material is cleaned and activated, a bottom coating layer containing a cellulose affinity group, a bio-based polysaccharide cross-linked heat insulation coating layer containing food contact grade silica aerogel particles and a food contact grade transparent protective layer are formed in sequence. The obtained carton can reduce the risk of migration of aerogel particle pulverization, maintain the stability of the paper base interface bonding, and form a heat preservation and insulation surface that can contact food.