45results about How to "The reaction process is stable and controllable" patented technology

The invention discloses a preparation method for aqueous polyurethane-polyurea dispersion and aims at providing a method for producing polyurethane-polyurea without using cosolvents and solvents in the process of preparation. The method comprises the following steps: 1) weighing water with a mass percent of 60 to 80%, adding the weighed water into a reactor, then adding polyetheramine with a mass percent of 1 to 5%, uniformly mixing the two, adding an anionic surfactant with a mass percent of 0.5 to 2%, and carrying out stirring to realize uniform mixing; 2) weighing polymer polyol with a mass percent of 10 to 25% and polyisocyanate with a mass percent of 2 to 8%, and uniformly mixing the two; 3) adding a substance obtained in step 2) into a substance obtained in step 1), and carrying out stirring to realize uniform mixing; 4) adding an organo-metallic catalyst with a mass percent of 0.001 to 0.1% into a substance obtained in step 3), and allowing an obtained mixture for reaction with stirring for 2 to 6 hours at a temperature of 40 to 80 DEG C so as to produce the aqueous polyurethane-polyurea dispersion. The invention belongs to the technical field of preparation of a chemical disperse system.

The invention discloses a water-oil dual-purpose dispersion agent as well as a preparation method and application thereof and aims at providing a dispersion agent with the advantages of no organic solvent, zero VOC (Volatile Organic Compound), capabilities of meeting the current environment-friendly requirement and being compatible with a waterborne system and a solvent-borne system. The water-oil dual-purpose dispersion agent is prepared by the following steps of: firstly, reacting polyether polyol or polyether polyamine with eta-caprolactone according to the ratio of (4:1)-(1:4) to obtain an intermediate A; secondly, adding 10-25 wt% of polyisocyanates into the intermediate A for reacting to obtain an intermediate B; and thirdly, adding a compound with the molecular formula of YMNH2 into the intermediate B, wherein Y is -OH, -COOH and -SO3H, and M is -Ph and -R; and reacting for 2-5 hours and cooling to be room temperature to obtain the dispersion agent. The water-oil dual-purpose dispersion agent is used for dispersing inorganic pigment, organic pigment and carbon black in a paint and ink system and belongs to the technical field of polymer materials.

The present invention discloses a direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method. The method comprises the following steps: (1) employing a vacuum pump to extract internal air of a reactor, closing the vacuum pump after vacuum pumping is completed, opening a nitrogen cylinder reducing valve, injecting nitrogen into the reactor and reaching an environment air pressure, and repeatedly performing the process for at least five times; (2) slowing filling fluorine and nitrogen gas mixture with 20% of volume fraction of fluorine into the reactor to allow the air pressure in the reactor to reach up to 300 mbar; (3) going on filling fluorine into the reactor until the air pressure of the reactor reaches up to 500 mbar to allow the fluorine and nitrogen gas mixture to react with silicone rubber samples, keeping the temperature in the reactor at 25 DEG C, replacing C-H bond in the silicone rubber sample surface layer molecule with C-F bond after a certain reaction time, and obtaining the silicone rubber samples with a surface layer molecular structure forming a space charge shielding layer having electronegativity. The direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method can enhance the charge screening effect of the direct current cable accessory silicon rubber insulation space.

The invention relates to the technical field of medicine, in particular to a novel sorafenib TsOH crystal form as well as a preparation method and an application thereof, and provides a type E crystal of a sorafenib TsOH monohydrate. In an X-ray powder diffraction pattern, the type E crystal of the sorafenib TsOH monohydrate displays characteristic diffraction peaks when 2-theta is about 8.961 degrees plus/minus 0.2 degrees,13.379 degrees plus/minus 0.2 degrees, 13.939 degrees plus/minus 0.2 degrees, 19.718 degrees plus/minus 0.2 degrees, 20.658 degrees plus/minus 0.2 degrees, 22.761 degrees plus/minus 0.2 degrees, 23.561 degrees plus/minus 0.2 degrees, 24.080 degrees plus/minus 0.2 degrees and 24.881 degrees plus/minus 0.2 degrees. A compound shown in a formula (II) of the type E crystal of the sorafenib TsOH monohydrate is high in product yield and excellent in product quality and has the advantages of good stability, high crystal purity, convenience in storage and the like.

The invention relates to fast-cured, high-performance and low-cost unsaturated polyester prepreg and a preparation method thereof. The fast-cured, high-performance and low-cost unsaturated polyester prepreg comprises a continuous fiber or textile, wherein a resin matrix is impregnated in the continuous fiber or textile; the resin matrix is prepared from vinyltoluene, unsaturated polyester, an initiator, a polymerization inhibitor, organic montmorillonite, silicon dioxide and aluminum hydroxide; the content, in percentage by mass, of the resin matrix is 15 to 60 percent; the unsaturated polyester prepreg is covered with a polyethylene film, a polypropylene film, an aluminum-plated film or silicone release paper; fiber woven fabric and multiple unidirectional fibers are impregnated respectively by adopting a unique high-toughness resin matrix; the prepreg is enabled to have the characteristics of not containing styrene and having low molding cost, low toxicity, low volatility, environmental friendliness, corrosion resistance, flame retardancy and the like; the preparation method is high-efficiency and stable; the fast-cured, high-performance and low-cost unsaturated polyester prepregcan be fast cured and is used for decreasing cost by a wide margin when being applied to a composite material, and the manufacturing efficiency of a component is obviously promoted.

The invention relates to beta-phosphoryl nitrate ester compounds and a preparation method thereof. Novel compounds, namely the beta-phosphoryl nitrate ester compounds as shown in a general formula (I)are synthesized, and the prepared beta-phosphoryl nitrate ester compounds will have a dual property both of nitrate esters and organic phosphines. The invention also discloses the preparation methodof the beta-phosphoryl nitrate ester compounds, and the preparation method is that olefin compounds, phosphorus reagents and an oxidant are dissolved in a solvent, and are allowed to react at 30-60DEGC under a nitrogen atmosphere, so as to prepare and obtain the beta-phosphoryl nitrate ester compounds in one-step with a one-pot method. According to the beta-phosphoryl nitrate ester compounds andthe preparation method thereof, the starting raw material is olefins which are cheap, readily available, low in cost, and have many types for selection; step economy and atom economy are high; the obtained products have various types and generally have high yields; and meanwhile, the preparation method has mild reaction conditions, is safe for operation, is easy to control, has simple post-treatment, and is suitable for large-scale production.

The invention discloses a trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber. The trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber comprises following steps: OVPOSS nanometer material is dried to remove water; a double-roller mixing mill roller is heated, roller distance and blocking plate distance are adjusted, terpolymer ethylene propylene rubber is introduced into the double-roller mixing mill roller for mix milling, an obtained product is taken out from the double-roller mixing mill roller, and the double rollers are washed; terpolymer ethylene propylene raw rubber is introduced for mix milling and roll banding; OVPOSS nanometer is added into terpolymer ethylene propylene rubber matrix for mix milling; 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane is weighed, and is introduced into the double-roller mixing mill for mix milling so as to obtain an unvulcanized rubber material; the unvulcanized rubber material is taken out from the double-roller mixing mill, is placed between two layers of PET film, is introduced into a high temperature hot processing forming machine die for hot pressing, and obtained rubber sheets are taken out from the high temerpature hot processing forming machine die after cooling; the rubber sheets are suspended in an air blast baking oven, sulfuration is carried outso as to obtain modified terpolymer ethylene propylene rubber sample sheets; the functional group composition and section morphology of the modified terpolymer ethylene propylene rubber sample sheetsare analyzed; rubber sample sheet surface potential attenuation characteristics are measured; SPD method is adopted to obtain trap distribution character diagram and charge mobility characteristics ofthe rubber.

The invention discloses a synthesis method of perfluoro-3, 6-dioxa-4-methyl-7-octenylsulfonyl fluoride (PSVE), which comprises the following steps: (1) reacting tetrafluoroethane beta sultone with hexafluoropropylene oxide in an organic solvent under the action of a catalyst, and rectifying the reaction solution to obtain an intermediate after the reaction is finished; and (2) mixing alkali carbonate and the intermediate obtained in the step (1) according to a molar ratio of (1-8): 1, carrying out a salt forming reaction at 50-250 DEG C, wherein the contact time of the reaction is 5-10 min, then carrying out a decarboxylation reaction at 260-500 DEG C, wherein the contact time of the reaction is 10-30 min, collecting a decarboxylation reaction product, and carrying out condensation and rectification to obtain the 3, 6-dioxa-4-methyl-7-octenylsulfonyl fluoride product. The method has the advantages of simple process, short reaction route, safety, environmental protection, high yield andhigh purity.

The invention discloses high-solid-content low-viscosity odorless alkyd resin as well as a preparation method and application thereof, and the high-solid-content low-viscosity odorless alkyd resin is prepared from the following raw materials in parts by mass: 29.5 to 33.5 parts of vegetable oil fatty acid, 18.5 to 21.5 parts of anhydride, 2.5 to 4.9 parts of monobasic acid, 20.3 to 24.1 parts of polyhydric alcohol, 2 to 5 parts of aldehyde resin, 3 to 5 parts of xylene and 14 to 15 parts of organic solvent. The structure and performance of the prepared resin are easy to control and adjust, the prepared resin is used for preparing a two-component polyurethane wood lacquer coating, the hardness reaches up to H or above, the adhesive force is grade 0, the residual VOC is lower than 5g/L after a paint film is dried for 2 days, and the resin is odorless and environmentally friendly and has excellent chemical resistance and thermal stability.

The invention discloses a device and a method for preparing silicon rubber for improving quick dissipation of space charges. The device comprises an electron balance, a drying box, a vulcanizing machine and a blending machine, wherein the blending machine is used for blending a silicon rubber substrate and filler and comprises a roll cylinder, a heating device, a rotation speed adjusting device and a timing device. The preparation method comprises the following steps of weighing the silicon rubber matrix and the filler by the electron balance, and adding into the drying box at the temperature of 60 DEG C for further use; sequentially adding the silicon rubber matrix, nanometer silicon dioxide, hexamethyl-disilazane, polyvinylsilicone oil, micrometer silicon carbide, nanometer silicon carbide and 2,5-dimethyl-2,5-di(tert-butyl peroxide)hexane into the roll cylinder, and blending; finally, obtaining a silicon rubber enhanced insulation material with quick dissipation of space charges in the vulcanizing machine. The method has the advantages that the dissipation process of the space charges in the silicon rubber insulation material is obviously improved; the influence on the self mechanical property of the silicon rubber enhanced insulation material in a cable accessory is avoided; the production technology and process are simple, and the reaction process is stable and controllable.

The invention relates to an electrochemical hydrogenation device and a method, belonging to the technical field of chemical industry. An electrochemical hydrogenation device, the device comprises a plane stack assembly, the stack assembly is formed by stacking the following plane layers in sequence, a hydrogen dissociation catalytic layer, a cation electrolyte membrane layer, an anion electrolyte membrane layer, and a water dissociation catalytic layer. layer, hydrogenation catalyst layer. Using the device of the present invention for hydrogenation reaction, the reaction process is stable and controllable, the reaction yield is high, the reactor is self-humidifying, and water management is easy. The hydrogenation reaction process of the invention is efficient, fast and stable, does not require high temperature and high pressure, only consumes a small amount of electric energy, and can carry out catalytic hydrogenation reaction on organic matter under normal temperature and pressure, and the reaction process is economical and environmentally friendly.

The invention relates to m-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and a synthetic method thereof. The synthetic method includes the following steps that firstly, epoxy resin, m-phthalic acid and a catalyst are sequentially put into a reaction vessel, and stirring is started; secondly, the temperature is increased to 170-175 DEG C, heat preservation is performed, and after the mixture is reacted to be clear, heat preservation continues to be performed for 1 h till the acid value is lower than 5 mgKOH/g; thirdly, the temperature is decreased to 105-115 DEG C, a polymerization inhibitor and a stabilizer are sequentially added, then methacrylic acid is dripped, the methacrylic acid dripping speed is controlled to finish dripping within 1 h, and after dripping is finished, heat preservation is performed at 120-125 DEG C till the acid value is decreased to 20 mgKOH/g or below; fourthly, the temperature is decreased to 85-90 DEG C, styrene is added for dilution, the temperature continues to be decreased to 55-60 DEG C, stirring is performed for 0.5-1 h at the temperature till evenness is achieved, and filtration is performed. The m-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and the synthetic method thereof have the advantages that the reaction process is steady and controllable, no wastewater is produced, and environmental friendliness is achieved.

The invention provides a synthesis method of benzo-p-dipyrrole molecules for hydrogen storage, and belongs to the technical field of hydrogen storage of organic heterocyclic aromatic hydrocarbon molecules. The synthesis method comprises the following steps: preparing benzo-p-dipyrrole molecules by taking N1 molecules as initial reactants; wherein the chemical structural formula of the N1 molecule is shown in the specification, and the chemical structural formula of the benzo-p-dipyrrole molecule is shown in the specification. The N1 molecule is adopted as an initial reactant, so that by-products in the reaction process are reduced, and the yield of an intermediate product and the reaction success rate are greatly improved; finally, the synthesis yield, the yield and the efficiency of the benzo-p-dipyrrole molecule are greatly improved.

The invention discloses a water-soluble low-modulus acrylic resin adhesive and a preparation method thereof, the glass transition temperature of the water-soluble low-modulus acrylic resin adhesive islower than 0 DEG C, the storage state of the water-soluble low-modulus acrylic resin adhesive is a homogeneous, clear and stable aqueous solution, the pH value of the aqueous solution is 6-8, the solid content is 5%-50%, and the viscosity is 10-200000 cp; the dried water-soluble low-modulus acrylic resin adhesive is a solid; when the temperature is higher than 0 DEG C, the tensile modulus and thebending modulus of the water-soluble low-modulus acrylic resin adhesive are lower than 100MPa; the preparation method comprises the following steps: mixing water-soluble acrylate, water-soluble loweralcohol, an initiator and pure water in a reaction container, and fully stirring to obtain a clear aqueous solution which is a reaction solution; and heating the reaction container to 50-80 DEG C, reacting for 2-8 hours, cooling and collecting a product. Compared with the prior art, the water-soluble low-modulus acrylic resin adhesive is an aqueous solution system, and has the advantages of few small molecule residues, good stability, looser requirements on storage conditions and longer storage life.