5results about How to "Good viscosity stability" patented technology

This invention relates to the field of carbon nanotube technology, specifically disclosing a high-viscosity carbon nanotube conductive paste and its preparation method. The raw materials for this high-viscosity carbon nanotube conductive paste include ultra-long single-walled carbon nanotubes, short-cut multi-walled carbon nanotubes, conductive carbon black, carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, polyacrylic acid, fluorinated silane coupling agent, γ-butyrolactone, and N-methylpyrrolidone. The high-viscosity carbon nanotube conductive paste provided by this invention achieves uniform dispersion, low volume resistivity, excellent anti-settling properties, and good coating processability of the carbon nanotube conductive paste under high solids content through the synergistic effect of the carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, the fluorinated silane coupling agent, and polyacrylic acid, combined with multi-stage grinding and high-pressure homogenization processes.

This invention relates to a dispersant, its preparation method, and its application. The dispersant provided by this invention is based on acetylacetonate diol, which undergoes hydrogenation, ethoxylation, polyesterification, and phosphorylation to form an innovative twin-type dispersant. By adjusting the length of the polyether and polyester in the dispersant, this invention can effectively improve the compatibility between various components in coatings or battery slurries, thereby reducing viscosity and improving slurry stability. Specifically, for battery slurries, the dispersant prepared by this invention can prevent the agglomeration of positive and negative electrode active materials and conductive agents in the slurry through steric hindrance, thus improving the fluidity of the battery slurry, improving the slurry gelation, and enhancing viscosity stability. Therefore, it can achieve a lower viscosity at a higher solids content.

The invention relates to the field of refining and application of wood fiber biomass, and discloses a lignin-based formaldehyde-free adhesive, a lignin-based plywood and a preparation method and application of the lignin-based formaldehyde-free adhesive and the lignin-based plywood. The lignin-based formaldehyde-free adhesive disclosed by the invention comprises the following components: L-cysteine lignin, and the solid content of the lignin-based formaldehyde-free adhesive is 10-45wt%. The method comprises the following steps: mixing an aqueous solution of L-cysteine hydrochloride and lactic acid with raw materials for pretreatment; performing extraction and vacuum filtration on the obtained suspension to obtain dissolved lignin and hemicellulose filtrate, and performing extraction and purification on the filtrate to obtain L-cysteine lignin; the lignin-based formaldehyde-free adhesive is prepared by uniformly dispersing the L-cysteine lignin in water. According to the invention, the used solvent is green and nontoxic in source, the hydrated lignin-based adhesive with good fluidity is prepared with low solid content, and the prepared plywood shows excellent dry and wet bonding strength, solvent resistance and weather resistance, and meets the preparation requirements of national I-class plywood.

The invention discloses a salt-resistant functional monomer suitable for a high-salt oil field environment, and relates to the technical field of oil field exploitation, and the functional monomer S is a salt-resistant polymer suitable for the high-salt oil field environment and comprises the following components in parts by weight: 210-260 parts of acrylamide; 15 parts to 30 parts of AMPS (2, 2, 4-trimethyl-1 6 to 15 parts of AEO-9 (fatty alcohol polyoxyethylene ether); 20 to 50 parts of a functional monomer S; 10 to 20 parts of urea; 0.2 to 0.3 part of a 1 # initiator; 0.05 to 0.15 part of a 2 # initiator; 0.05 to 0.15 part of a 3 # initiator; 0.1 to 0.3 part of a 4 # initiator; the total amount is 1000 parts. According to the salt-resistant functional monomer suitable for the high-salt oilfield environment, a polymer synthesized by using the functional monomer has the characteristics of high salt resistance, high tackifying property, high viscosity stability and capability of being prepared by using oilfield produced sewage, and can keep good solubility and viscosity under the sewage condition, so that the oil recovery rate is increased.

The invention discloses tungsten slurry with high viscosity stability and a preparation method thereof, and belongs to the technical field of tungsten slurry, the tungsten slurry comprises tungsten powder, the average particle size of the tungsten powder is 0.5-2.0 [mu] m; the composite organic solvent comprises tripropylene glycol monomethyl ether and butyl carbitol, and the composite organic solvent is formed by mixing the tripropylene glycol monomethyl ether and the butyl carbitol; and an additive, wherein the additive comprises dibutyl phthalate and 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate. The tungsten slurry has excellent viscosity stability: a remarkable synergistic effect is generated through a specific solvent combination and an additive combination, for example, when the tungsten slurry is stored for 5 days at normal temperature, the viscosity is only slowly reduced to 1.2 W from 1.5 W, the change amplitude is extremely small, and compared with the prior art, the viscosity is dramatically increased by several times or even dozens of times in the same period, and the viscosity stability is greatly improved. Therefore, the technical problem of poor storage stability of the slurry is solved.