33results about How to "Fully polymerized" patented technology

The invention provides a whole oil-based drilling fluid viscosifier and a preparation method thereof. The preparation method for the whole oil-based drilling fluid viscosifier comprises the steps: 1) uniformly mixing 15-50 parts by weight of polyester polyol, 5-15 parts by weight of a polymerization promoter and 50-150 parts by weight of a solvent at room temperature so as to obtain a mixture; 2) heating the mixture to 40-60 DEG C, adding 15-80 parts by weight of isocyanate and 0.3-1.0 part of a polymerization catalyst under a stirring condition, and continuing to heat the mixture to 70-90 DEG C and enabling the mixture to react for 3-5 h so as to obtain an intermediate product; and 3) cooling the intermediate product to 40-50 DEG C, adding 5-15 parts by weight of a polymerization promoter, heating to 60-80 DEG C and continuing a reaction for 2-3 h so as to obtain the whole oil-based drilling fluid viscosifier. The whole oil-based drilling fluid viscosifier prepared by the preparation method can effectively improve suspension stability of a drilling fluid and improve the rheological property of the drilling fluid without changing the density of the drilling fluid; and therefore, the whole oil-based drilling fluid viscosifier is suitable for exploration and development of low pressure reservoirs.

The invention discloses carboxylic butadiene-styrene latex and a preparation technology thereof. The carboxylic butadiene-styrene latex is prepared from water phase materials, oil phase materials, priming materials, and other materials, wherein the water phase materials comprise a first solvent, a first emulsifier, acrylic acid, N-hydroxymethyl acrylamide, acrylamide and a pH (potential of hydrogen) regulator; the oil phase materials comprise styrene, butadiene and ethyl 3-mercaptobutyrate; the priming materials comprise mbs seed latex, sodium dodecyl benzene sulfonate, and a liquid alkaline mixture; the other materials comprise a fourth solvent, ethylenediaminetetraacetic acid disodium salt, an initiator mixture, a water-based defoamer, liquid alkaline, and a second emulsifier; the firstemulsifier selects an anion emulsifier; the second emulsifier selects a non-ionic emulsifier; the first solvent and the fourth solvent are respectively soft water. The prepared carboxylic butadiene-styrene latex has the advantages that the conversion rate is high, and the polymerizing stability, mechanical stability and chemical stability are good.

The invention relates to the field of composite material preparation, in particular to a starch grafted coal gangue coated nano zero-valent iron composite material and a preparation method thereof. Inthe reversed-phase suspension polymerization, a reversed-phase suspension polymerization system consists of a water phase and an oil phase; the water phase is composed of water, starch, an initiator,a cross-linking agent, a polymeric monomer, ferrous sulfate heptahydrate, potassium borohydride and a surfactant, and the oil phase is composed of a dispersing agent; the volume ratio of the water phase to the oil phase is 1-5. The composite material obtained by the invention not only has good adsorption capacity of coal gangue, but also fully utilizes a complex three-dimensional network structure and various active functional groups of starch to stabilize and disperse nano zero-valent iron, can effectively prevent the oxidation of the nano zero-valent iron, and has a good treatment effect onCr (VI) containing water.

The invention provides a preparation method of a coating type dye polarization component, wherein the coating type dye polarization component comprises a substrate; a polarization alignment film is arranged on the substrate; the preparation method comprises the following steps: heating a reaction vessel to a reaction temperature according to a hot bath method, maintaining the reaction temperature in the reaction vessel; placing a reaction monomer in the reaction vessel, stirring and fully dissolving, then standing for a first time interval; placing a dye in the reaction vessel, stirring and fully dissolving, then standing for the first time interval to obtain a polarization film solution; coating the polarization film solution on the polarization alignment film of the substrate by using a spin-coating method to obtain a polarization film; curing the polarization film through ultraviolet irradiation to obtain the coating type dye polarization component. The invention further provides a liquid crystal panel. The solution of the invention can improve a polarization degree of a polarizer and improve a contrast ratio of the liquid crystal panel.

The invention relates to a preparation method of a poly[2, 5-dyhydroxy-1, 4-phenylene pyridine diimidazole] polymer. The preparation method comprises two steps of prepolymerization reaction and post-polycondensation reaction. The reaction time of a prepolymer in a double-screw extruder is 10-60 minutes, and the double-screw extruder is provided with three temperature zones according to a sequence from a feeding port to a discharging port, wherein the temperatures of the tree temperature zones are respectively 160-180 DEG C, 180-190 DEG C and 190-200 DEG C. According to the preparation method, the double-screw extruder is used for carrying out the post-polycondensation reaction, and specific temperature and time are used for controlling parameters, so that the intrinsic viscosity [eta] of the PIPD polymer obtained in the end is 28-30dL/g, the molecular weight of the polymer is greatly increased, meanwhile, the stirring is facilitated, and the PIPD polymer can be easily conveyed and transferred to a spinning working section, thus the production efficiency is improved, and the production cost is reduced.

The invention provides a polyimide precursor, a polyimide film, a preparation method of the polyimide film and a display device; the polyimide precursor is synthesized in ionic liquid by using sulfonated diamine, dianhydride and hydrophilic nano silicon dioxide, and the polyimide film containing nano silicon dioxide is prepared by using the polyimide precursor. The polyimide film has good mechanical properties and heat resistance, the 1% thermal weight loss temperature is 430-540 DEG C, the glass transition temperature is 330-480 DEG C, the tensile strength is 220-450 MPa, the transmittance at400 nm is 60-86%, and an effective solution is provided for the defects of polyimide as a transparent substrate or a transparent cover plate at the present stage.

The invention discloses a preparation method of long carbon chain polyamide based on pentamethylene diamine. Comprising the following steps: (1) reacting pentamethylene diamine, long carbon chain dibasic acid and water at 50-70 DEG C to obtain a polyamide salt solution; and (2) carrying out polymerization reaction on raw materials including the polyamide salt solution, a catalyst, an antioxidant and a molecular weight regulator under the condition of temperature programming to obtain the pentanediamine-based long-carbon-chain polyamide. The pentamethylene diamine-based long carbon chain polyamide which is good in mechanical property, high in transparency and easy to process can be obtained.

The invention discloses a thermal insulation device for belt type polymerization. The thermal insulation device is arranged above a polymer, and comprises a drive wheel, a driven wheel, a conveyor belt arranged on the drive wheel and the driven wheel in a driving way, a pressing mechanism arranged in a liftable way between the drive wheel and the driven wheel and used for downward pressing the conveyor belt on the upper surface of the polymer, wherein the conveyor belt comprises an inner layer conveyor belt, an outer layer conveyor belt and a thermal insulation interlayer clamped between the inner layer conveyor belt and the outer layer conveyor belt. The thermal insulation device for belt type polymerization is suitable for continuously producing the polymer, the conveyor belt with the thermal insulation interlayer is pressed on the upper surface of the polymer, and can prevent the polymer from making contact with external gas in a thermal insulation process and can greatly reduce evaporative heat loss of the polymer, the thermal insulation effect is good, a high temperature can be kept in the polymer, polymerization reaction can be more sufficient, and the aim of reducing the content of residual monomers is achieved.

The invention belongs to the technical field of production of semiconductor chips, and in particular relates to a curing method for photosensitive resin BCB. The method comprises the following steps of coating photosensitive BCB glue on the surface of an epitaxial wafer, forming a photosensitive BCB glue pattern on the surface of the epitaxial wafer by using a photoetching method; 2, etching the photosensitive BCB glue on the surface of the epitaxial wafer via a plasma reaction; 3, placing the etched epitaxial wafer into an annealing furnace, inputting the mixed gas of H2 and Ar for protection, raising the temperature from 50 DEG C to 275 DEG C in a multistage warming and heat-retaining manner, and keeping warm for 2h at the temperature of 275 DEG C; and 4, then increasing the flow for inputting the mixed gas of H2 and Ar to quickly reduce the temperature of the annealing furnace to the room temperature, and stopping inputting the mixed gas of H2 and Ar, thus completing curing. According to the curing method for the photosensitive resin BCB provided by the invention, the multistage warming and heat-retaining manner is used, so that the BCB polymerization reaction is more sufficient; and when in annealing, the mixed gas of H2 and Ar is used for replacing traditional N2 to serve as a protection gas, so that the possibility of oxidation and aging is reduced, and the BCB quality isimproved.

The invention discloses a nitrogen-doped carbon electrode material, which is prepared by the following steps of removing electrolyte from polymer emulsion prepared from acrylonitrile and other monomers, adding electrolyte solution, standing to form polymer hydrogel, drying the polymer hydrogel, and carrying out two-step heat treatment of oxidation and carbonization to obtain the nitrogen-doped carbon electrode material. The invention also provides a preparation method of the nitrogen-doped carbon electrode material. The method has the following advantages that the nitrogen with electrochemical activity in the obtained material can change the conductivity and interface stability of the carbon material and improve the reaction kinetics of a carbon-based electrode, so that the structural stability and lithium storage performance of the carbon negative electrode material of the lithium ion battery are improved.

The invention relates to the technical field of coagulants, and in particular, relates to a high-efficiency organic coagulant which is specifically prepared by the following preparation steps: (1) adding hydroxymethylated polyacrylamide and an ethanol solution with the mass concentration of 63% into a container, and stirring and mixing; (2) raising the temperature of the container to 70-85 DEG C,adjusting the pH value of the solution after 3 hours, and reacting for 6 hours under an acidic condition; and (4) adding a quaternary ammonium salt monomer into the container, uniformly stirring and mixing, dropwise adding polymethyldiallylammonium chloride (HCA) into a reaction kettle, and reacting for 9 hours to obtain the organic coagulant. The organic coagulant has the beneficial effects thatthe polymerization reaction is promoted to be more sufficient through the polymethyldiallyl ammonium chloride (HCA), the preparation method is simple, secondary pollution such as heavy metal is not generated, the prepared organic coagulant is good in coagulation effect, the putting amount of treated wastewater can be reduced, and the sludge dewatering treatment cost and the later treatment cost can also be reduced.

The invention discloses butadiene-styrene latex and a preparation method thereof. The butadiene-styrene latex is prepared from water phase materials (a first solvent, divinylbenzene, an anionic emulsifier, a first emulsifier, hydroxyl ethyl cellulose, polysorbate-80, acrylic acid, N-methylol acrylamide, acrylic amide, and a pH regulator), oil phase materials (styrene, butadiene, an organic solvent, and 3-mercaptobutyrate), base materials (mbs seed latex, sodium dodecylbenzenesulfonate and a second solvent), and other materials (a third solvent, EDTA, initiator mixture, a water-based foam suppressor, liquid base, and a second emulsifier), wherein both the first emulsifier and the second emulsifier are non-ionic emulsifiers, the first solvent, the second solvent and the third solvent are allsoft water, and the organic solvent comprises one of butyl acetate, butyl acetate, and butyl acrylate. The butadiene-styrene latex has advantages of good water resistance, aggregate stability, mechanical stability, and chemical stability.

The invention relates to a green, safe and environment-friendly device and method for industrial continuous large-scale production of a formaldehyde-free aqueous adhesive. The device comprises a polymerization reaction system, a solvent recovery system and an ammonification reaction system. The method comprises three steps of polymerization reaction, solvent recovery and ammonification reaction. The polymerization reaction system adopts a circulation loop technology, and the reaction is controlled through a tubular reactor; the solvent recovery system adopts inert gas N2 or CO2 for circulating spray drying; and the ammoniation reaction system adopts a powdery material gas-solid continuous ammoniation process, and ammonia gas is diluted by air. The green, safe and environment-friendly production process of the formaldehyde-free water-based adhesive has the advantages of being green, safe, environment-friendly, simple in process, mild in reaction condition, good in atom economy and the like, full-process automatic control can be achieved, labor is saved, and the method is suitable for continuous industrial production of the formaldehyde-free water-based adhesive.