191 results about "Diethyldithiocarbamic Acid" patented technology

The invention discloses a method for preparing monodisperse near-infrared quantum dots, comprising the following steps: using diethyl dithiocarbamate as a monophyletic reaction precursor; carrying out pyrolytic reaction in mixed solution of surface active agent with high boiling point and different coordination properties and selecting silver sulfide as the target product to be prepared to obtainquantum dots with excellent dispersibility, low toxicity and near-infrared emitted light property. The method of the invention features in mild reaction conditions, simple operation, safety and good repeatability, eliminates toxicity caused by using the traditional quantum dots and provides necessary and provides necessary preparations for studies of application of the quantum dots as a fluorescence label indicator to a near-infrared biomarker and to the image formation field.

The invention belongs to the processing agent technical field, and in particular relates to a heavy metal polluted soil treatment processing agent comprising the following components by mass: 40%-75% of dimethyl dithiocarbamate chelating agent; 20%-45% of diethyl dithiocarbamate chelating agent and 5%-15% of polyethylene imine. Compared with the existing technology, the dimethyl dithiocarbamate chelating agent can effectively fix soil heavy metal ions, and due to the biological activity of the diethyl dithiocarbamate chelating agent, the heavy metal polluted soil treatment processing agent can promote crop absorption of heavy metal ions, that is to say, the heavy metal polluted soil treatment processing agent both has the properties of heavy metal ion fixing and crop absorption of heavy metal ions, so that the treatment process of soil heavy metal ion pollution can be speeded up, and the heavy metal polluted soil treatment processing agent can thoroughly treat soil heavy metal pollution in a short period of time.

The improved oil resistant semi-conductive cable shielding material consists of butadiene-acrylonitrile rubber or hydrogenated butadiene-acrylonitrile rubber 100 weight portions, conducting carbon black 50-80 weight portions, graphite powder 15-30 weight portions, plasticizer 15-20 weight portions, dithio tetramethyl thiram and alphatic polysulfide 1.0-3.0 weight portions, dibenzothiazole disulfide and zinc diethyl dithio amino formate 1.0-2.0 weight portions, zinc oxide and stearic acid 8.0-10.0 weight portions. Compared with available technology, the present invention has the advantages of excellent conductivity, volume resistivity not greater than 50 ohm.cm, high tensile strength up to 18 MPa, high oil resistance and other advantages.

The invention relates to a preparation method of a nitrogen and sulfur co-doped porous carbon microsphere composite material. The method comprises the following steps of S1, performing closed reactionon hexachlorobutadiene, tellurium diethyl dithiocarbamate (TDEC) and a solvent under high temperature and high pressure; S2, relieving pressure to normal pressure after reaction is completed, naturally cooling to a room temperature, and drying the obtained solid to obtain a dried sample; and S3, performing high-temperature roasting processing on the dried sample under protection of inert gas so as to obtain the nitrogen and sulfur co-doped porous carbon microsphere composite material. The invention also relates to the composite material, application thereof and oxidization-reduction performance comprising the composite material. The nitrogen and sulfur co-doped porous carbon microsphere composite material has excellent performance and can be used for preparing an oxidization-reduction electrode of a fuel cell, so that the nitrogen and sulfur co-doped porous carbon microsphere composite material can be used in the fuel cell, shows excellent electrochemical performance and has huge application potential and industrial value in the field of electrochemistry.

The invention discloses a copper gold silver ore flotation collecting agent and a flotation method, belongs to the technical field of ore flotation, and solves the prominent problems of low copper gold silver ore beneficiation efficiency, high cost and the like. The copper gold silver ore flotation collecting agent ester-205 is prepared from the following raw materials: 30 to 40 parts of N,N-diethyl dithiocarbamate, 20 to 25 parts of diisopropyl dithiophosphate, 10 to 15 parts of black powder acid, 20 to 30 parts of terpenic oil and 2 to 5 parts of ethyl alcohol. The flotation method comprises the following steps: preparation of flotation pulp, flotation preparation and copper gold silver ore flotation. According to the copper gold silver ore flotation collecting agent and the flotation method, multiple circulation times and metal loss of target metal ores in a flotation process are effectively avoided, so that the trunk flotation process is shortened, and the investment and operation cost is reduced; the collecting agent ester-205 is high in collecting capacity; the flotation speed is increased; the copper gold silver recycling rate is increased; the number of the scavenging times is reduced; and the types and the use amounts of flotation agents are reduced.

The invention discloses a method for preparing general nano metal sulphide. The method is characterized in that: diethyldithio carbamate is adopted as a single-source reaction precursor of the sulphide, and is thermally decomposed, nucleated and grown in the mixed solution of surfactants with different coordination properties to prepare appearance and size-controllable sulphide nanocrystals in a pure state by one step. In the method, the thermal decomposition of the reaction precursor in the high-boiling mixed solution of the surfactants and components of the solution are controlled, and the nucleation and growth process of the nanocrystals is adjusted, so the prepared metal sulphide has the characteristics of pure phase state, uniform size, high yield, relatively higher dispersibility in non-polar organic solvents, easily controlled reaction conditions and large-scale production.

The invention relates to a hydrogenated nitrile-butadiene rubber composition. The composition comprises hydrogenated nitrile-butadiene rubber, butadiene rubber, an anti-aging agent MBZ, an anti-aging agent DDA, mixed gas carbon black, quick pressed-out carbon black N550, dioctyl adipate, dioctyl sebacate, dicumyl peroxide, triallyl isocyanurate, selenium diethyl dithiocarbamate and gamma-amino propyl triethoxysilane. The low-temperature resistance of the hydrogenated nitrile-butadiene rubber is further enhanced by using the hydrogenated nitrile-butadiene rubber and the butadiene rubber together under the combined action of auxiliary agents such as the dioctyl adipate, the dioctyl sebacate and like; the hydrogenated nitrile-butadiene rubber has the brittleness temperature of up to -56 DEG C, no breakage and still good oil resistance; and other performance of the rubber is not changed obviously. The low-temperature resistance of the hydrogenated nitrile-butadiene rubber is improved and simultaneously the use value of the rubber is improved, which has great significance for better use of the hydrogenated nitrile-butadiene and products thereof in automobile industry, petrochemical industry and the like. Moreover, the safety insurance of the products is improved and the service life of the products is prolonged.

The invention discloses a heatproof high-strength cable which comprises a conductor, an insulating layer, a high-temperature-resistant layer and an outer sheath insulating layer which are made of a modified polyvinyl chloride material. The modified polyvinyl chloride material comprises polyvinyl chloride, nylon, maleic anhydride grafted polyphenyl ether, bisphenol-A polycarbonate, stearic acid pentaerythritol ester, trioctyl trimellitate, stearic acid, isopropyl phenyl diphenyl phosphate, calcined kaolin, modified nano-calcium carbonate, maleic acid modified hydrotalcite, modified graphene oxide, carbon nanofibers, diethyl dithiocarbamate neodymium, calcium adipate, glyzinc, beta-diketone, pentaerythritol, ethylene-vinyl alcohol and antioxidant. The heatproof high-strength cable is high in intensity, good in heat resistance and long in service life.

The invention discloses a CeO2 (Cerium Oxide) nano-particle/CdS (Cadmium Sulfide) nano-rod composite photo-catalyst as well as a preparation method and an application thereof. The CeO2 nano-particle/CdS nanorod composite photo-catalyst takes a CdS nano-rod of a one-dimensional structure as a substrate, CeO2 nano-particles are decorated on the surface of the CdS nano-rod. The preparation method comprises the steps of enabling sodium diethyldithiocarbamate and CdCl2.2.5H2O (Cadmium Chloride) to react to obtain cadmium diethyldithiocarbamate; then, adding a solvent to carry out solvothermal reaction to obtain the CdS nano-rod; ultrasonically dispersing the CdS nano-rod and the Ce(NO3)3.6H2O (Cerium(III) Nitrate Hexahydrate) in absolute ethyl alcohol to obtain a suspension; and dripping deionized water into the suspension to carry out solvothermal reaction by dropping. The CeO2 nano particle/CdS nanorod composite photo-catalyst provided by the invention has the advantages of high catalytic efficiency, strong resistance to corrosion, low cost and the like, thereby being applicable to dye degradation.

The invention belongs to the field of dangerous waste stabilizing treatment, relates to a method for treating incineration fly ash by mixing diethyl dithiocarbamate carbamate and ferrous sulfate (copperas) in a certain proportion as a stabilization agent, and provides a method for treating multiple kinds of heavy metal in incineration fly ash by mixing diethyl dithiocarbamate carbamate, phosphate and copperas in a certain proportion as an agent to solve the problems that in single use of an existing stabilization agent, many defects exists, for example, a chelating agent is high in use level, cost is high, and multiple kinds of metal are not likely to be fixed by single agents at the same time. According to the method, multiple kinds of heavy metal such as cadmium, lead, zinc and nickel in the incineration fly ash can be fixed at the same time, and therefore the leaching toxicity of the heavy metal is lowered, and the requirement of the Municipal Solid Waste Landfill Contamination Control Standard (GB16889-2008) is met. In addition, the method is low in cost, raw materials are easy to obtain, secondary pollution is avoided, and the treatment method is simple. The simple and feasible method for stabilizing treatment on household refuse incineration fly ash is provided, a great obstacle of restraining the cleanliness development of waste incineration enterprises is eliminated, great environment benefits can be achieved, and obvious economic benefits and good social benefits can be achieved.

The invention discloses a pre-dispersed master colloid for rubber vulcanization promotion, and a preparation method thereof. The pre-dispersed master colloid comprises, by mass, 20-30 parts of tellurium diethyl dithiocarbamate (TDEC), 30-50 parts of dipentamethylenethiuram tetrasulfide (DPTT), 3-10 parts of an inorganic filler, 5-10 parts of softened oil, 2-5 parts of a processing assistant and 5-40 parts of a rubber carrier. The preparation method of the pre-dispersed master colloid improves the dispersion of active components, and makes the master colloid be uniformly discharged and have smooth particles and good processability; and the master colloid effectively improves the mechanical performances of vulcanized rubber when the master colloid is used in preparation of rubber compounds.

The invention discloses a high-weather-resistance cable material for railway passenger trains and a preparation method thereof. The cable material is prepared form the following raw materials in parts by weight: 40-60 parts of ethylene-propylene-diene monomer, 35-45 parts of epichlorohydrin rubber, 20-30 parts of polypropylene, 5-10 parts of silicone OV-210, 10-15 parts of dicyclopentadiene petroleum resin, 2-4 parts of insoluble sulfur, 1.5-2.5 parts of N,N'-m-phenylenedimaleimide, 2-3 parts of magnesium methacrylate, 1-2 parts of zinc oxide, 4-6 parts of low-molecular-weight polybutadiene, 5-10 parts of titanium dioxide, 9-16 parts of nanometer xonotlite, 5-10 parts of cashew shell oil, 20-30 parts of fast extruding furnace black N550, 4-8 parts of diallyl bisphenol A, 2-3 parts of N,N'-di-2-naphthyl-p-phenylenediamine, 2-3 parts of cadmium diethyldithiocarbamate, 1.5-2.5 parts of zinc stannate, 12-18 parts of ammonium octamolybdate and 15-20 parts of modified stone flour. The cable material has excellent weather resistance, thermal aging resistance, chemical corrosion resistance and fatigue resistance, is usable for a long time in environments of sunlight, moisture, ozone, acid rain and the like, and is long in service life and wide in application prospect.

The invention relates to an anti-cancer transdermic absorption preparation. The preparation formula is prepared from the following forming components in parts by weight: 0.1 to 10 parts of a primary medicine, 0.1 to 23 parts of a substrate, 0.1 to 15 parts of a humectants, 0.5 to 15 parts of a thickening agent, 0.1 to 10 parts of an emulsifier, 0.1 to 10 parts of a transdermal enhancer, 1 to 10 parts of an inclusion agent, 0 to 2 parts of a preservative, and 45 to 85 parts of a wetting agent, wherein the primary medicine is one or a mixture of two or more components of DDC (diethyldithiocarbamic acid)-Zn, DDC-Cu and DS (disulfiram). The anti-cancer transdermic absorption preparation has the advantages of stable physical property and chemical property, high absorption performance, high medicine controllability, easiness in use and favorability for acceptance by patients, and can be widely applied to anti-cancer treatment of in-patients and out-patients suffering from malignant tumors.

The invention belongs to the field of rubbers, and particularly relates to a rubber resisting thermal ageing. The rubber resisting thermal ageing comprises the following components in parts by weight: 80-220 parts of natural rubber, 50-220 parts of hydrogenated acrylonitrile butadiene rubber, 3-10 parts of nano zinc oxide, 2-4 parts of sodium stearate, 15-65 parts of carbon black N100, 5-12 parts of a softener, 5-15 parts of reinforcing powder, 5-10 parts of sulphur, 2-5 parts of an antiager, 2-8 parts of calcium carbonate, 2-6 parts of a tackifier, 2-5 parts of naphthenic oil, 2-5 parts of white carbon black, 2-5 parts of a scorch retarder, 2-4 parts of phthalic acid dibutyl ester, 2-4 parts of diethyl dithiocarbamic acid, 2-4 parts of 2-thiol imidazoline, and 2-10 parts of a plasticizer. Compared with common rubber, the rubber resisting thermal ageing has the beneficial effects of good thermal ageing resistance and dynamic fatigue resistance, and is used as rubber products in fatigue state for long.

The invention relates to a fluororubber modified PVC (polyvinyl chloride) cable material for automobile wire harnesses, which is prepared from the following raw materials in parts by weight: 65-70 parts of PVC, 7-8 parts of calcium zinc stabilizer, 40-50 parts of trioctyl trimellitate, 2.5-3 parts of triallyl isocyanurate, 0.2-0.3 part of dicumyl peroxide, 0.1-0.2 part of boric acid, 20-25 parts of hexafluoropropylene terpolymer rubber, 4-4.5 parts of nano zinc oxide, 1.8-2.1 parts of vinyl acetate, 1.4-1.8 parts of nano cellulose, 2.4-2.8 parts of zinc diethyl dithiocarbamate, 1-1.3 parts of triethanolamine, 2-2.5 parts of E-12 epoxy resin, 1.2-1.6 parts of xylene, 18-22 parts of thermoplastic polyurethane and 0.8-0.9 part of antioxidant 1010. The E-12 epoxy resin is utilized to enhance the bonding strength and dimensional stability of the cable material. The cable material is suitable for manufacturing wiring harnesses of parts of motormeters, illumination, air conditioners and the like.

The invention provides an underwear mold cup. The underwear mold cup comprises, by weight, 120 parts of natural rubber latex, 20 parts of oxalic acid, 12 to 18 parts of pancreatin, 1.5 to 3 parts of auxiliary agents, 45 to 60 parts of potassium ricinoleate soap, 100 parts of sulfur, 100 to 120 parts of zinc diethyl dithiocarbamaate, 45 to 50 parts of ammonium bicarbonate, 25 to 30 parts of sodium lauryl sulfate, 1.5 to 3 parts of an amphoteric oxide, a delayed coagulant, 10 to 20 parts of potassium silicofluoride and 0.1 to 1 part of an antiager. Through deamination aging, foaming, bed cutting, cotton pushing and setting, the underwear mold cup is obtained. The underwear mold cup has good breathability and can rapidly release heat and moisture generated by the human body. The natural rubber has good elasticity and a strong memory function. The underwear mold cup can support breast according to ergonomics, effectively maintain the natural structure of the breast and prevent breast displacement or sagging.

The invention provides a method for synthesizing zinc-doped copper-indium-sulfur (Zn-doped CuInS2) quantum dots. The method is characterized in that by using copper diethyldithiocarbamate as a copper source, indium diethyldithiocarbamate as an indium source, zinc diethyldithiocarbamate as a zinc source, oleylamine as a ligand and a solvent, one-step reaction is conducted to prepare the Zn-doped CuInS2 quantum dots. The Zn-doped CuInS2 quantum dots prepared according to the invention have the size of 4 to 5nm and a good photoelectric property, and are suitable for preparing a quantum dot sensitized solar cell. According to the invention, the zinc content of the quantum dots can be changed by changing the quantity of the zinc source; compared with pure CuInS2 quantum dots, the Zn-doped CuInS2 quantum dots obtained by the method have fewer internal defects; compared with a thermal injection method, the method provided by the invention has the advantages of simple and easy operation, simpler process, shorter synthesis cycle, good production controllability and repeatability and low cost, and the method provided by the invention is suitable for industrialized production, and has a wide application prospect in the solar cell.

Mirror-polishing of a silicon wafer is conducted using an abrasive agent which contains silica as a principal ingredient, and either one of the ingredients set forth at (1) and (2): (1) an ingredient which is selected from alkali sulfide, alkali hydrogensulfide, and the mixture thereof; and (2) a chelate agent which contains at least alpha-benzoinoxime, diethyldithiocarbamic acid, cupferron, xanthogenic acid, neocupferron, beryllon II, beta-quinolinol, 1,1,1-trifluoro-3(2-thenoyl)acetone, dimethylglyoxime, and 1-(2-pyridylazo)-2-naphthol.

The invention provides automobile door sealing rubber. The automobile door sealing rubber is characterized by being prepared from the following components in parts by weight: 30 to 50 parts of basalt fiber, 15 to 23 parts of butadiene-acrylonitrile rubber, 12 to 18 parts of flake vermiculite, 4 to 7 parts of cadmium diethyldithiocarbamate, 3 to 5 parts of sulfur, 6 to 8 parts of high-wear-resisting carbon black, 1 to 3 parts of an anti-aging agent and 0.5 to 1 part of a defoaming agent. According to the automobile door sealing rubber provided by the invention, the flake vermiculite is added and is then blended with other components, so that the prepared automobile door sealing rubber has very strong heat preservation and heat insulation properties; the flake vermiculite added in the invention can play roles of a reinforcing agent and a heat stabilizer; by utilizing the excellent properties of good high temperature resistance, oxidation resistance, radiation resistance, heat insulation and noise insulation, good filterability, high compression strength and shear strength, good insulativity, high milk corrosivity and chemical stability and applicability in use under various environments and the like of the basalt fiber, the prepared automobile door sealing rubber is good in sealing property, is high in temperature resistance and is high in compression strength.

The invention relates to a wear resistant polyvinyl plastic with a filling material of nanometer silicon nitride powder and its preparation method, which belongs to the field of polymer material. Raw materials comprise the components of the weight percentage, master batches: 95% to 98% of chlorosulfonated polyethylene resin with a melt index range of 6 - 20g/10min, 1% to 3% of carbon black, 0.2% to 0.6% of zinc oxide, 0.2% to 0.6% of eleaostearic acid, 0.05% to 0.2% of N,N<,>-diphenyl-para-phenylene diamine, 0.05% to 0.2% of diglycol and 0.1% to 0.4% of zinc diethyl dithiocarbamate; mother liquor: 25% to 35% of chlorosulfonated polyethylene resin is melted in 65% to 75% of trichloromethane; filling materials: 25% to 35% of nanometer silicon nitride powder with 65% to 75% of trichloromethane; wear resistant polyvinyl plastic with the filling material of nanometer silicon nitride powder: 70% to 85% of master batches, 1% to 5% of filling material and 10% to 25% of mother liquor. The formula in the present invention is divided into three parts, each parts is individually produced or prepared, and finally used together.