21results about How to "Good viscosity increasing effect" patented technology

The invention discloses water-based formaldehyde-free woodworking glue and a preparation method thereof, and relates to the technical field of woodworking glue. When the water-based formaldehyde-free woodworking glue is prepared, firstly, n-butyllithium is used as an initiator to initiate cyclosiloxane and an acrylate monomer to be polymerized, then dimethyl chlorosilane is used for blocking to obtain pre-modified polyacrylate, and the pre-modified polyacrylate is used for preparing the water-based formaldehyde-free woodworking glue. Reacting the pre-modified polyacrylate with vinyl diphenylphosphine, and then reacting with 3-(4-bromophenyl)-1-propylene to obtain modified polyacrylate; secondly, reacting the 4-(trimethoxysilyl) butyraldehyde modified silicon dioxide with chitosan, and then reacting with mercaptoacetic acid to obtain modified silicon dioxide; finally, mixing the modified polyacrylate, the modified silicon dioxide, an emulsifier, a defoaming agent, pure water and a photoinitiator to obtain the water-based formaldehyde-free woodworking glue. The water-based formaldehyde-free woodworking glue prepared by the invention has flame retardance and antibacterial property.

The invention provides a myriameter deep oil-gas wall-fixing type water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The myriameter deep oil gas wall-fixing type water-based drilling fluid is prepared from the following raw materials in parts by weight: 100 parts of water, 1-5 parts of a modified clay shear strength improving agent, 2-4 parts of a hydrophobic association polymer flow pattern regulator, 3-8 parts of a blocking agent, 2-5 parts of a hyperbranched polymer filtrate reducer and 1-3 parts of a cementation blocking type wall-fixing agent. The invention also provides a preparation method of the drilling fluid. The components such as the flow pattern regulator, the plugging agent, the filtrate reducer and the wall-fixing agent are mutually matched and synergistic, so that the drilling fluid can keep good rheological, filtration, plugging and inhibition performances for a long time under the conditions of 240 DEG C and saturated salt, has a strong wall-fixing effect, can effectively maintain the stability of the well wall of an oil-gas well in the depth of 10,000 meters, and has a wide application prospect. And well collapse, well leakage, blowout and other complex well drilling are prevented, and the drilling tool can be used for drilling oil and gas wells with the depth of ten thousand meters.

The invention provides boron-containing organic silicon, an optical adhesive, organic silicon OCA and a preparation method and application thereof. The preparation raw materials of the boron-containing organic silicon comprise a combination of silanol, a siloxane monomer and a boric acid compound. In the raw materials for preparing the boron-containing organic silicon, the ratio of the total molar weight of hydroxyl to the total molar weight of alkoxy is (0.8-1.1): 1, and the ratio of the total molar weight of the element B to the total molar weight of the element Si is 1: (5-11.5). According to the boron-containing organic silicon provided by the invention, through the design of the preparation raw materials, the compatibility between the boron-containing organic silicon and an organic silicon material in an optical adhesive is good, the tackifying effect on the optical adhesive is excellent, and the boron-containing organic silicon has excellent low-temperature resistance and high-temperature and high-humidity resistance.

The invention relates to a branched ultrahigh-salt and ultrahigh-temperature resistant polyacrylamide polymer as well as a preparation method and application thereof. The preparation method comprises the following steps: obtaining the polyacrylamide polymer with a branched structure by adopting a reducing agent octamethylpentaethylenehexamine; the branched polymer has a larger hydrodynamic volume and a denser intermolecular network structure, has better shear resistance, and can obtain a higher resistance factor and a higher residual resistance factor in a porous medium; and the problems of polymer molecule curl and obvious solution viscosity reduction caused by the electrostatic shielding effect can be weakened under the high-salt condition.

The invention relates to the technical field of polyurethane rubber materials, and discloses a functional polyurethane rubber material and a preparation method thereof, the polyurethane rubber material is composed of a component A and a component B, the component A comprises the following raw materials: a functional additive and a diisocyanate monomer; the component B is prepared from the following raw materials: a tackifying modified component, 1, 3-propylene glycol, talcum powder, an anti-aging agent, dioctyl phthalate, pigment, a flame retardant, stannous octoate and zinc stearate; wherein the structure of the functional additive contains a large number of silicon-oxygen bonds, fluorine elements and tert-butyl structures; the tackifying and modifying component is a grafted compound of petroleum resin and glycidyl furfuryl ether, and all the raw materials are matched with one another, so that the prepared polyurethane rubber material has good corrosion resistance, waterproof performance and adhesive force and can meet the use requirements in various environments.

The invention provides a high-strength self-assembly gel foam oil displacement agent and a preparation method thereof, and belongs to the field of chemical oil displacement. The high-strength self-assembly gel foam oil-displacing agent is prepared from the following components: a ternary amphiphilic hydrophobic association copolymer, a zwitterionic surfactant, a nonionic surfactant, heat-resistant polybasic acid, a counter-ion compound, a chelating agent and formation water. According to the self-assembly gel foam oil-displacing agent, quadruple interaction is formed among molecules of all the components, the strength of foaming liquid is remarkably improved, generated nitrogen foam is fine, rich and good in stability, large cracks and karst caves can be blocked in a fracture-cavity type oil reservoir, the swept volume can be effectively enlarged, the crude oil recovery rate of the fracture-cavity type oil reservoir can be remarkably increased, and the oil-displacing effect is good. The foaming agent does not generate precipitates with calcium and magnesium ions, and does not separate out due to salt.

The invention discloses a device and a method for directly preparing coke from weakly caking coal, and belongs to the technical field of coal mineral processing. The device comprises a fluidized bed, a dryer, a hot gas-solid separator, a dry distillation kettle and a cooling device, pulverized coal enters the fluidized bed through a pulverized coal injection tank, carbon monoxide and water vapor enter the fluidized bed through a gas flow nozzle at the bottom of the fluidized bed, two gas flows reversely collide and then enter a catalyst layer, reaction gas is activated, active hydrogen substances are generated, the activated gas serves as fluidizing gas to fluidize the pulverized coal added into the fluidized bed, and tackifying modification is conducted in the fluidized bed; in addition, a tar spraying device is arranged at the top of the fluidized bed, so that the pulverized coal can be secondarily tackified; according to the device and the method, the problems of difficulty in tackifying and discharging of the pulverized coal and discontinuous production process are solved, and a novel device and a novel method are provided for directly preparing coke from the weakly caking coal.

The invention discloses a CO2 gas-soluble silicon nanofluid and a preparation method thereof, and relates to the technical field of additives for oil-gas field development. The method comprises the following steps: taking nano silicon dioxide, and grafting a silane coupling agent to obtain modified nano silicon dioxide, wherein the silane coupling agent comprises a group capable of being subjected to Michael addition reaction with an amino group; the preparation method comprises the following steps: taking methylsiloxane, fluorosiloxane, amino siloxane and an end-capping reagent, and polymerizing under the action of a catalyst to obtain polyfunctional group polysiloxane; taking the modified nano silicon dioxide and polyfunctional group polysiloxane, uniformly mixing, and then heating to carry out Michael addition reaction, thereby obtaining the modified nano silicon dioxide / polyfunctional group polysiloxane composite material after the reaction is finished. According to the gas-soluble silicon nanofluid disclosed by the invention, a network structure which takes the modified nanosilicon dioxide as a crosslinking point and takes the polysiloxane as a chain type is microcosmically formed; macroscopically, the tackifying effect on supercritical carbon dioxide is obvious, and the dissolving pressure is low; the interfacial tension of the crude oil and CO2 is obviously reduced, and the miscible phase pressure between the CO2 and the crude oil is reduced.

The invention discloses a modified polysaccharide, a preparation method and application of the modified polysaccharide as an oil-displacing agent in oil exploitation, and belongs to the technical field of oilfield exploitation. The modified polysaccharide takes polysaccharide as a main body, and is obtained by modifying the polysaccharide with sodium cyanoborohydride. The modified polysaccharide is modified galactomannan, modified welan gum or modified arabinogalactan. The polysaccharide is subjected to sodium cyanoborohydride reduction modification, so that the rheological property of the polysaccharide is enhanced. The sodium cyanoborohydride modified polysaccharide has higher viscosity, the viscosity is increased under the condition of high salt concentration, the salt tolerance of the polysaccharide can be remarkably improved, an excellent salt thickening effect is shown, and the sodium cyanoborohydride modified polysaccharide can be suitable for tertiary oil recovery of a high-salt stratum.

The invention discloses a pH-responsive surfactant molecule with cyclic tertiary amine and a preparation method of wormlike micelles of the pH-responsive surfactant molecule, erucic acid and primary amine with cyclic tertiary amine substituent are used as raw materials to carry out amidation reaction to prepare a pH-responsive surfactant with cyclic tertiary amine, and the wormlike micelles of the pH-responsive surfactant molecule with cyclic tertiary amine are used for preparing the wormlike micelles of the wormlike micelles of the wormlike micelles of the wormlike micelles. Meanwhile, water is removed by adopting a high-temperature oil-water separation device in the amidation reaction process, so that the purpose of efficiently preparing the high-purity pH response surfactant is achieved; the obtained pH-responsive surfactant with the cyclic tertiary amine is blended with distilled water, and then acid is added to reduce the pH of the system, so that surfactant molecules are protonized, and wormlike micelles can be prepared; in addition, worm-like micelles formed under the acidic condition can be destroyed by adding alkali to adjust the pH of the system, so that the pH-responsive surfactant aqueous emulsion with the cyclic tertiary amine is obtained. The pH-responsive surfactant with the cyclic tertiary amine prepared by the invention has a wide application prospect in the fields of environmental protection, oilfield exploitation, chemicals and the like.

The present invention discloses a viscosity-enhancing heat-resistant and salt-resistant polymer fluid loss reducer and a preparation method and application thereof. The viscosity-enhancing heat-resistant and salt-resistant polymer fluid loss reducer is obtained by copolymerizing a quaternary ammonium sulfonate olefin monomer, an olefin amide monomer and an olefin monomer containing a cyclic structure; wherein the quaternary ammonium sulfonate olefin monomer has a structure as shown in formula (I): Based on the molecular structure design concept, the present invention simultaneously places two groups, a quaternary ammonium salt positive ion and a sulfonate negative ion, in one monomer to obtain a quaternary ammonium sulfonate olefin monomer, and uses the monomer as a polymer core monomer to obtain a novel fluid loss reducer through free radical polymerization, and the obtained novel fluid loss reducer has significantly improved heat-resistant and salt-resistant capabilities and solubility. At the same time, due to the electrostatic repulsion between the terminal sulfonic acid groups, the chain molecular conformation of the polymer is more extended, and the polymer viscosity is also increased under a certain range of conditions.

This invention belongs to the field of oil and gas well reservoir stimulation technology, specifically relating to an emulsion for fracturing fluid suitable for bio-colloid flowback fluids and its preparation method. The fracturing fluid emulsion for bio-colloid flowback fluids, by weight, comprises the following raw material components: 80-100 parts acrylamide, 20-30 parts glycyl alanine, 5-10 parts cyclomethylsiloxane oil-in-water dispersant, 10-20 parts 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 10-20 parts hydroxyethyl methacrylate, 15-30 parts 2-acrylamido-2-methylpropanesulfonic acid, 60-80 parts white oil, 5-10 parts emulsifier, 5-10 parts initiator, and 10-15 parts water. This fracturing fluid emulsion significantly increases the solids content while also improving the performance of the fracturing fluid product, thus exhibiting excellent thickening properties even when formulated with bio-colloid flowback fluids.

The present invention provides a method for preparing a MQ resin with a low pentamer content, the method comprising the following steps: S1: adding water glass and hydrochloric acid to a polycondensation reactor, and fully mixing, and then aging to obtain a Q prepolymer; S2: adding a capping agent, an alcohol reagent and a solvent to the Q prepolymer for a capping reaction; S3: static phase separation to obtain an organic phase containing the MQ resin, adding a strong acid to the organic phase, and mixing at a temperature below 50°C; S4: washing with water to remove the strong acid in the organic phase obtained in step S3, and performing rectification and separation to obtain a MQ resin with a low pentamer content. The method according to the present invention can effectively reduce the content of pentamers in the MQ resin, improve the application performance of the MQ resin, enhance its initial adhesion in the application of pressure-sensitive adhesives and the viscosity-increasing effect of low-viscosity adhesives, and can effectively reduce the amount of MQ resin added in the formula.

This invention relates to the field of petroleum extraction technology, and discloses a compound, a polymer with oil displacement function, its preparation method, and its application. The compound of this invention has the structure shown in formula (8); the polymer of this invention has good solubility at 20-95℃ and a salinity of 500-50000 mg / L, exhibits good viscosity-enhancing effect on the aqueous phase at high temperatures, can improve the mobility ratio, effectively expand the swept volume, and has good temperature resistance. Simultaneously, it can emulsify and disperse crude oil, reduce interfacial tension, and can be used for polymer flooding to improve oil recovery in conventional reservoirs, high-temperature and high-salinity reservoirs, and ordinary heavy oil reservoirs.

This invention relates to a weakly associative functionalized polyacrylamide and its preparation method. The functionalized polyacrylamide is obtained by copolymerization of acrylamide structural monomers, ionic structural monomers, and hyperbranched associative monomers; the mass ratio of acrylamide structural monomers:ionic structural monomers:hyperbranched associative monomers is 30-60:0-30:0.5-2. The advantage of this invention is the synthesis of a novel class of hyperbranched associative monomers. By introducing a weakly associative structure into acrylamide, the thickening ability, shear resistance, and temperature and salt resistance of polyacrylamide can be enhanced, while overcoming the influence of conventional associative monomer introduction on solubility. This results in a fast-dissolving, weakly associative polyacrylamide that can be used for aqueous solution thickening, oil and gas extraction, and other fields.

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 a thickening agent, an oil-displacing agent and a preparation method and application thereof, and belongs to the technical field of oil exploitation. The molecular formula of the thickening agent is # imgabs0 #, the value of m ranges from 5000 to 50000, the value of n ranges from 2000 to 50000, and the value of p ranges from 2000 to 50000. The thickening agent can increase the viscosity of the carbon dioxide and improve the tackifying effect of the carbon dioxide, so that the oil displacement efficiency of the carbon dioxide is improved, for example, under the conditions of 60 DEG C and 15 MPa, the tackifying effect of the carbon dioxide can reach more than 15 mPa.s under the concentration of 0.5 wt%.

The invention provides a three-dimensional dendritic macromolecular tackifier as well as a preparation method and application thereof. The three-dimensional dendritic macromolecular tackifier is prepared from the following raw materials: a hyperbranched polymer and a grafting monomer, the hyperbranched polymer is prepared from the following raw materials: triethanolamine, p-phenylenediamine and a chain transfer agent. And the chain transfer agent is prepared from 2-cyano-2-propyl benzo disulfide. The three-dimensional dendritic macromolecular tackifier has good high-temperature and high-salt resistance, can also have a good tackifying effect under high-temperature and high-salt conditions, and can be used for water-based drilling fluids of various deep wells and ultra-deep wells.

The application relates to the technical field of waterproof coiled materials, and discloses a high-molecular pre-paved waterproof coiled material for tunnels, which comprises, from top to bottom, a magic tape hook surface layer, a magic tape hair surface layer, a high-molecular sheet layer, a glue-adhesive waterproof layer and an anti-adhesive layer; the glue-adhesive waterproof layer is hot-melt pressure-sensitive glue; the hot-melt pressure-sensitive glue comprises the following components by weight: 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene block copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer; the addition amount of the naphthenic oil is less than that of the polyisobutylene. The above technical scheme solves the problem of insufficient peeling strength of the glue-adhesive waterproof layer of the high-molecular pre-paved waterproof coiled material for tunnels in the related art due to the addition of the naphthenic oil.

The invention discloses a CO2 gas-soluble silicon nanofluid and a preparation method thereof, and relates to the technical field of additives for oil and gas field development. The method comprises the following steps: taking nano silicon dioxide and grafting a silane coupling agent to obtain modified nano silicon dioxide, wherein the silane coupling agent contains a group capable of undergoing a Michael addition reaction with an amino group; taking methylsiloxane, fluorosilicone, aminosiloxane, and a capping agent, polymerizing under the action of a catalyst to obtain a multifunctional polysiloxane; taking the modified nano silicon dioxide and the multifunctional polysiloxane and mixing them evenly, and then heating them to undergo a Michael addition reaction, and obtaining the gas-soluble silicon nanofluid after the reaction is completed. The gas-soluble silicon nanofluid of the invention forms a network structure with the modified nano silicon dioxide as a "cross-linking" point and the polysiloxane as a chain at the microscopic level; at the macroscopic level, it has an obvious viscosity-increasing effect on supercritical carbon dioxide and a low dissolution pressure; it significantly reduces the interfacial tension between crude oil and CO2, and reduces the miscible pressure between CO2 and crude oil.

The invention provides an antibacterial asphalt material and a preparation method thereof, and relates to the technical field of asphalt materials. The antibacterial asphalt is prepared from the following raw materials in parts by mass: 52-60 parts of matrix asphalt, 18-23 parts of naphthenic oil, 4-8 parts of an SBS (Styrene Butadiene Styrene) polymer, 4-8 parts of an SBR (Styrene Butadiene Rubber) polymer, 3-6 parts of petroleum resin, 5-10 parts of diatomite and 15-20 parts of an antibacterial agent. According to the novel antibacterial asphalt material disclosed by the invention, the asphalt material is endowed with lasting and good antibacterial property, adhesion, temperature resistance and low-temperature cracking resistance, and the preparation method is simple.