14 results about "Dimethyl sulfoxide" patented technology

The invention discloses a preparation method and a use method of an environment protection type weakly acidic deburring softening solution. The environment protection type weakly acidic deburring softening solution comprises the following components by weight percent: 30-50% of dimethyl acetamide, 30-50% of dimethyl sulfoxide, 0.5-1% of furfural, 0.5-1% of surfactant OP-10 (2-(2-[4-(1,1,3,3-Tetramethylbutyl)phenoxy]ethoxy)ethanol) and the balance water; and the pH value of the solution is 4.0-5.0. The provided environment protection type weakly acidic deburring softening solution has excellent deburring and deoxidizing effects and is safe and environmentally friendly; the materials of the formula completely meet the requirements of environmental protection, the product is stable, the wastes generated in the use process are convenient to treat; and the softening technology is simple, the cost is low and the softening solution is convenient in use.

The invention relates to a preparation method of a ternary terbium complex monomer and a copolymer luminescent material of the ternary terbium complex monomer and MMA. The method comprises the steps that firstly, the ternary terbium complex monomer is prepared, and recrystallization is conducted on an initiating agent AIBN (azodiisobutyronitrile) through methyl alcohol; then the ternary terbium complex monomer is dissolved by utilizing DMF (N,N-dimethylformamide) and DMSO (dimethyl sulfoxide) or a toluene solvent respectively, wherein the molar ratio of the ternary terbium complex monomer to the MMA is 1-10 to 100, and the initiating agent AIBN accounts for 0.5%-1% of the total mass of an initiating system; after reaction is conducted for 20-60 h under the conditions that inert gas argon exists, water and oxygen do not exist, and the temperature ranges from 50 DEG C to 85 DEG C, copolymer powder is obtained through methyl alcohol reprecipitation. The copolymer can be used for electronic terminals such as computers, televisions and mobile phones and mainly serves as the luminescent material of the panel display field. In addition, due to the fact that a pendant group -N-H- of the copolymer contains a reactive hydrogen atom, the copolymer can be used for ion recognition and fluorescent probes.

The invention provides a perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises the steps of spin coating a ZnO precursor on the surface of a transparent conductive electrode to form an electron transport layer; Forming an absorbing layer on the electron transport layer, forming the absorbent layer comprises: PbI2 is dissolved in a mixed solution of dimethylformamide (DMF) and dimethyl sulfoxide (DMSO), then adding guanidine isothiocyanate, stirring and dissolving, then spin coating the mixed solution of PbI2 and guanidine isothiocyanate onto the electrontransport layer for first baking, then immersing in isopropyl alcohol (IPA) solution of CH3NH3I for second baking; forming a hole transport layer on the absorbing layer; A metal electrode is for on that hole transport layer. The perovskite solar cell provided by the invention optimizes the stability of the solar cell and improves the hysteresis effect of the solar cell.

The invention discloses a synthesis method of EPS-RB nanometer particles for photodynamic bacterium resistance. Lactobacillus plantarum exopolysaccharides EPS, rose-bengal RB, 1-(3-dimethylaminopropyl)-3-ethylenediamine hydrochloride EDC-HCl and N-hydroxysuccinimide NHS are used as raw materials; reaction is performed in dimethyl sulfoxide DMSO to obtain compounds EPS-RB; the compounds EPS-RB aresubjected to self assembly to form spherical nanometer particles in a water solution; a good photodynamic bacterium resistance effect is achieved. The compound can realize the self aggregation in thesolution to form nanometer particles; the nanometer particles generates singlet oxygen higher than free RB under the light illumination condition, so that the photodynamic bacterium resistance on escherichia coli and staphylococcus aureus is superior to that of the free RB. The concentration required by EPS-RB nanometer particles for completely killing escherichia coli and staphylococcus aureus isrespectively 8mu M and 500nM; the concentration required by the free RB is respectively 16 mu M and 1000nM.

The invention discloses an attractive, elegant and high-impact-resistance automobile trim material. The attractive, elegant and high-impact-resistance automobile trim material is prepared from, by weight, 30-35 parts of bamboo fibers, 2-3 parts of antimonous oxide, 5-7 parts of shell powder, 10-12 parts of waterborne polyurethane, 0.2-0.4 part of silane coupling agent kh570, 1-2 parts of polyethylene wax, 10-13 parts of polyvinyl alcohol, 100-105 parts of polylactic acid, 60-68 parts of dimethylacetamide, 30-35 parts of dimethyl sulfoxide, 9.4-10.2 parts of shale stone, 3.5-4.5 parts of hydroxyethylmethylcellulose, 5.5-6.5 parts of strontium carbonate, 7.9-8.7 parts of dry coconut shell powder and a proper amount of deionized water. A preparation method is simple and controllable and low in production cost, and the material has the advantages of being good in stability, attractive, elegant, good in impact resistance, high in strength, resistant to fire and abrasion and the like, and is worthy of being popularized.

The invention discloses a method for colorimetric detection of hydrogen peroxide by utilizing metal organic complexes. The method comprises the following steps of: (1) preparing inorganic salt solution of valence-variable metals into solution I; (2) preparing 2-methylimidazole solution or 4,4-dipyridyl into solution II; (3) mixing the solution I with the solution II, so as to prepare metal organic complex solution; and (4) mixing dimethyl sulfoxide solution of peroxidase color source substrates and the metal organic complex solution with a to-be-tested hydrogen peroxide sample, diluting the solution by utilizing buffer solution to obtain solution A, standing, testing the absorbance value of the solution A in a visible light region, and detecting the concentration of the hydrogen peroxide by utilizing the colorimetric detection. According to the method disclosed by the invention, the detection time can be greatly shortened, the operation is simple, the cost is low, and the disadvantages that the cost is high when metal nanoparticles are utilized and the reaction time is long when mimic enzymes such as metallic oxide are utilized are avoided.

The invention belongs to the technical field of chemical analysis and detection, and relates to synthesis and application of a fluorescent probe for detecting trace water in dimethyl sulfoxide. The Mn-TCPP (BPDC) material can be prepared from porphyrin and manganese ions through a simple solvothermal method, and the material has relatively strong fluorescence response to water, has no response to an organic solvent dimethyl sulfoxide (DMSO) and has relatively good fluorescence linear range response to the water content in the DMSO. The fluorescent probe is simple and convenient to prepare, and has the advantages of high sensitivity, large linear range, good stability and repeatability and the like when being used for detecting moisture.

The invention provides an anti-static coating with cassava oxidized starch as film forming matter and a preparation method and application of the anti-static coating with the cassava oxidized starch as the film forming matter. The anti-static coating with the cassava oxidized starch as the film forming matter comprises, by mass, 1-1.4 parts of PEDOT/PSS aqueous dispersion, preferably 1 part of PEDOT/PSS aqueous dispersion, 0.4-1.2 part of cassava oxidized starch gelatinized liquid, preferably 0.6-1 part of cassava oxidized starch gelatinized liquid, 0.1-0.5 part of sodium carboxymethyl cellulose gelatinized liquid, preferably 0.1-0.2 part of sodium carboxymethyl cellulose sodium gelatinized liquid, 0.1-0.7 part of dimethyl sulfoxide, preferably 0.2-0.5 part of dimethyl sulfoxide, 0-0.25 part of wetting and flatting agent, preferably 0-0.11 part of wetting and flatting agent, 1-8 parts of water, preferably 3-5 parts of water, and 1-8 parts of isopropanol, preferably 3-5 parts of isopropanol. The anti-static coating with the cassava oxidized starch as the film forming matter is excellent in anti-static performance. The preparation method and application of the anti-static coating with the cassava oxidized starch as the film forming matter is environmentally friendly. In this way, the anti-static coating with the cassava oxidized starch as the film forming matter and the preparation method and application of the anti-static coating with the cassava oxidized starch as the film forming matter all have broad research and development prospect and good market potential.

The invention relates to the field of office supplies for science education, and discloses a novel coloring agent for the science education. The novel coloring agent for the science education is characterized by being prepared from, by mass, 5-20 parts of methyl alcohol, 7-10 parts of ethyl alcohol, 6-12 parts of acetonitrile, 9-15 parts of acetic acid, 8-12 parts of dimethyl sulfoxide, 6-10 parts of N,N-dimethyl formamide, 11-20 parts of isopropyl alcohol, 7-21 parts of cyclohexane, 9-22 parts of concentrated nitric acid, 2-11 parts of hydrogen peroxide, 13-22 parts of ethylene glycol monomethyl ether, 2-19 parts of phenolphthalein, 1-5 parts of a thickening agent, 2-6 parts of white oil, 3-9 parts of glycerol, 11-40 parts of water, 2-8 parts of silicon dioxide, 5-26 parts of edible alcohol, 3-12 parts of sodium hydroxide, 1-20 parts of a color-fixing agent, 2-25 parts of stabilizer, 7-22 parts of corrosion inhibitor, 5-19 parts of a wetting agent, 3-20 parts of an anti-corrosion agent and 2-5 parts of glue. When the novel coloring agent for the science education is used in printing coating, the novel coloring agent is lasting, sanitary, clean, environmentally friendly and free of pollution to the environment, all the used materials are low in price, and the production cost is reduced; the coloring agent can be made into multiple colors such as red, blue and purple through different proportions of all the components such as the phenolphthalein and the edible alcohol; meanwhile, the used components such as the phenolphthalein and the edible alcohol are harmless to a human body, healthy and environmentally friendly, and the physical and psychological health of a reader is guaranteed.

The invention relates to refining methods of polymer materials and in particular relates to a method for refining a poly(ether-ketone-ketone) crude product by using a hydrochloric acid water solution of oxalic acid. The refining method comprises the following steps: firstly carrying out reflux stirring on a certain amount of poly(ether-ketone-ketone) crude product in a water solution containing dimethyl sulfoxide; and then adding the hydrochloric acid water solution of oxalic acid, carrying out reflux stirring and carrying out filtration after cooling; then carrying out reflux washing with a mixed water solution of glycolic acid and formic acid and carrying out filtration and drying, thus obtaining the poly(ether-ketone-ketone) pure product. Poly(ether-ketone-ketone) molecular chains tightly wrapping catalyst impurities can be unfurled by utilizing the poly(ether-ketone-ketone) swelling characteristic of the water solution containing dimethyl sulfoxide, so that impurity ions are exposed and diffused into media, and meanwhile, metal ions are continuously trapped by utilizing the metal ion chelating characteristic of oxalic acid under acidic conditions, thus achieving efficient removal of Al<3+> in the poly(ether-ketone-ketone) crude product.