41results about How to "Reduce darkening" patented technology

The invention discloses a method for treating black and stink river and lake water body in a city and especially relates to a proportion of a sediment repairing agent. The sediment repairing agent is a mixture of zeolite powder, active carbon, oxygenation agent, flocculating agent and adhesive in a mass ratio of 10-50:5-10:1-20:1-10:1-5. The sediment repairing agent of the invention can effectively alleviate or even eliminate a phenomenon of black and stink water body, prevent a phenomenon of black mud turning over in water body and increase transparency of the water body.

A method for in-situ chemical treatment and remediation of heavily-polluted black and odorous water bottom mud comprises the following steps that firstly, a saturated sodium carbonate solution is added into the black and odorous water bottom mud; secondly, a sodium percarbonate working solution is added into the black and odorous water bottom mud; thirdly, symclosene is added into black and odorous water; fourthly, non-ionic polyacrylamide is added into the black and odorous water so that the ecological transparence of the black and odorous water can be larger than 40 cm. According to the method, the environment-friendly chemicals of sodium carbonate, sodium silicate, manganese dioxide, sodium percarbonate, sodium symclosene and polyacrylamide are adopted, singles and compounds are used in combination, biological degradation and abiotic degradation are combined, a heavily-polluted water area is subjected to comprehensive ecological remediation, black and odorous bottom mud organic matter of the polluted water is subjected to in-situ remediation by increasing dissolution oxygen, the chemical regents can take effect fast after being added into the water, the black and odorous phenomenon in the water can be relieved in a short time, the adding mode is simple, the environment-friendly chemicals are used, secondary pollution to the water is avoided, and toxicity is very low.

The invention relates to a synthetic method of pyridinium hydroxy propyl sulfobetaine. The synthetic method comprises the following steps: sufficiently dissolving hydrosulphite or pyrosulfite in water at normal temperature, adding sodium sulfite as an auxiliary sulfonating agent to adjust the pH value of the system to be 5.2-5.5, and then adding polyether F-6 as a catalyst; then adding a complexing agent, controlling the environment conditions, adding epichlorohydrin, and carrying out loop-opening reaction to obtain 3-chloro-2-hydroxy propanesulfonate; adding pyridine to the system, controlling the temperature to carry out reflux reaction, adding triethylamine as an impurity removing agent, reacting for 1 hour, then dehydrating and decoloring, adjusting the pH to 2-5, and adding 4-hydroxyl-2, 2, 6, 6-tetramentylniperidine-1-oxygen radical as a stabilizer and a vitamin C derivative to obtain an aqueous solution of the pyridinium hydroxy propyl sulfobetaine. The pyridinium hydroxy propyl sulfobetaine synthesized by the synthetic method is produced by adopting a one-pot method, which accords with the electroplating industry development demands at present; the pyridinium hydroxy propyl sulfobetaine is low in impurity content, good in appearance and low in production cost.

The invention discloses an amalgam temperature control device for an electrodeless lamp. The device comprises an electronic ballast for driving a light source of the electrodeless lamp, and an exhaust pipe arranged on a tube of the electrodeless lamp, wherein amalgam is filled in the exhaust pipe; the exhaust pipe is sleeved with a magnetic ring; electromagnetic induction coils are wound on the magnetic ring; and high-frequency current output by the electronic ballast passes through the electromagnetic induction coils. By adopting the structure, the device has the advantages that: 1, the temperature of the amalgam is effectively controlled by using a principle that high-frequency eddy current of the magnetic ring is used for heating, so that the amalgam is in an optimal temperature state, the tube can work at the optimal working temperature, and the luminous efficiency of the tube is improved, particularly the luminous efficiency at a low temperature; and 2, the starting performance of the electrodeless lamp at a low temperature can be enhanced, the starting time of the eletrodeless lamp can be reduced, the phenomena such as darkening and the like caused by indium amalgam can be avoided, so that the optical attenuation of the tube can be reduced, the service life of the tube is prolonged, and the performance of the tube is further improved.

The present invention includes barrier coatings and methods for reducing or preventing chemical reaction between the discharge medium and arc tube wall material in discharge lamps. The barrier coatings comprise nitride layer exposed to the discharge medium formed from one or more of aluminum, boron, scandium, yttrium, or the lanthanides. In another aspect, the present invention includes methods of forming coatings on the inner wall of arc tubes by introducing two or more precursors into the arc tube chamber and pyrolitically reacting the precursors to form layers for the coating.

Provided is a drum-type washing machine, having a discoloration alleviation mode aside from a standard mode of carrying out a standard washing step, said drum-type washing machine comprising an impurity concentration sensing unit (18) which senses an impurity concentration in wash water within a water tank (2), and a control unit (20). The washing step includes an agitation step of rotation driving a rotating drum (3) and washing clothing. In the washing step of the discoloration alleviation mode, the control unit (20) executes a first wash action which carries out a first agitation step for a first prescribed time period (T1) which is shorter than a prescribed agitation step time period in the washing step of the standard mode and drains the wash water within the water tank (2). Thereafter, new wash water is supplied and a follow-up wash action executed which carries out the agitation step for a second agitation step time period (T2) and drains the wash water. The impurity concentration of the wash water in the first agitation step is sensed by the impurity concentration sensing unit (18), and the number of follow-up wash action cycles is determined according to the sensed impurity level.

The invention discloses absorption type filtering protection glass. The absorption type filtering protection glass adopts quartz glass or sapphire glass as a material, the surface of the absorption type filtering protection glass is plated with an infrared cut-off film and an antireflection film, and light-absorbing substances such as phosphorus pentoxide is added into an absorption type filtering protection glass smelting process. According to the absorption type filtering protection glass disclosed by the invention, phenomena of halo, ghosting and darkened picture caused by light reflection and absorption can be effectively reduced in an image module optical system, and a phenomenon of chromatic aberration of incident light due to angle changes can be improved.

The invention discloses a secondary cooling nozzle of a billet continuous casting machine. The secondary cooling nozzle comprises a foot roll and connecting valves, wherein the foot roll comprises a first foot roll section, a second foot roll section and a third foot roll section; the first foot roll section and the second foot roll section, and the second foot roll section and the third foot rollsection are separated and connected through the connecting valves; the first foot roll section, the second foot roll section and the third foot roll section are formed through parallelly arranging left end foot rolls, middle end foot rolls and right end foot rolls; 12 nozzles are oppositely arranged on the left end foot rolls and the right end foot rolls of the first foot roll section; 9 nozzlesare oppositely arranged on the left end foot rolls and the right end foot rolls of the second foot roll section; and 4 nozzles are oppositely arranged on the left end foot rolls and the right end footrolls of the third foot roll section. According to the secondary cooling nozzle, cooling uniformity of casting billets of the small billet continuous casting machine is improved, phenomena of surfacetemperature returning of the casting billets and corner blackening of the casting billets are decreased, low-power corner cracks and inner cracks of the continuous casting billets are effectively reduced, productivity is increased, steps are simple, and operation is convenient.

The invention discloses a double-layer thermal insulated composite sealing device for a feed opening. The double-layer thermal insulated composite sealing device comprises an upper flange and a lower flange, wherein a pressing strip is welded on the upper flange; a fixing strip is welded on the lower flange at a position corresponding to the pressing strip; a double-layer sealing strip is arranged in the fixing strip; in the assembly process, the pressing strip on the upper flange is pressed on the double-layer sealing strip in the fixing strip, and is fixed by a high-strength bolt and a nut. With adoption of the structure, the double-layer thermal insulated composite sealing device can prevent heat in a furnace from damaging the sealing strip in the long-term use, prolong the service life of the sealing strip, reduce the replacement costs and materials, improve the sealing effect, reduce the leakage of furnace atmosphere and heat, protect the workshop environment, improve the quality of products after thermal treatment in the furnace, and reduce the decarburization and darkening of products due to gas leakage.

The invention relates to the technical field of water-borne gloss oil, and particularly relates to water-borne wood lacquer color-repairing gloss oil, as well as a preparation method and an application thereof. The gloss oil is prepared from the following raw materials: water-soluble polyurethane resin, water-soluble acrylic resin, dipropylene glycol methyl ether, polyethylene imine, a water-bornedefoaming agent, a water-borne flattening agent, ethanol, a dispersant and deionized water. The preparation method comprises the following steps: a, mixing the components under a norm-temperature condition, and stirring for 20-25 minutes; and b, filtering with a filter screen having 300 meshes after uniform stirring. The water-borne wood lacquer color-repairing gloss oil is prepared by using transparent resin as components, and is easy in color matching in the using process; the polyethylene imine synthesized with the dipropylene glycol methyl ether in the raw materials can be used for effectively improving the adhesion performance of the water-borne wood lacquer color-repairing gloss oil, has strong binding force with a wood surface; and the polyethylene imine can react and bind with tanning and other acid substances in a wood material, so that the problems of discoloring and blackening of woods can be effectively relieved.

The invention provides a plastic composition applied in children's toys and a preparation method thereof; in a formula, polyethylene or polypropylene is used as a main body, an antibacterial agent, sodium benzoate, nanofibers and the like are added, and during preparation, firstly, the antibacterial agent is combined with the antioxidant and sodium benzoate to obtain a second mixture, then the plastic main body, a plasticizer and the nanofibers are added on the basis of the second mixture, and at the same time, processing parameters such as speed, time, temperature and the like are strictly controlled so as to ensure the synergistic effect among the raw materials and greatly improve the performance of the product. In addition, active calcium carbonate and phenyl salicylate are also contained in the ingredients, therefore, the whiteness of the product can be improved, and the phenomenon of color darkening of the product surface after conversion of the antibacterial agent can be reduced;tests prove that the prepared plastic composition has all the metal element content, heavy metal content and the like in accordance with the national standards, and also has excellent antibacterial properties.

The invention discloses a special gypsum plaster board for building construction, and relates to the field of building materials. The invention relates to a waterproof and hydrophobic gypsum board, which is prepared from the following raw materials in parts by weight: 0.5 to 2 parts of modified starch, 0.2 to 0.8 part of retarder, 80 to 100 parts of gypsum powder, 0.5 to 2 parts of water reducing agent, 40 to 50 parts of water, 1 to 30 parts of aerogel powder, 10 to 30 parts of foam particles and 10 to 20 parts of waterproof and hydrophobic material. The waterproof and hydrophobic gypsum board is prepared from the following raw materials in parts by weight: 0.5 to 2 parts of modified starch, 0.2 to 0.8 part of retarder, 80 to 100 parts of gypsum powder, 0.5 to 2 parts of water reducing agent, 40 to 50 parts of water, 1 to 30 parts of aerogel powder, 10 to 30 parts of foam particles and 10 to 20 parts of waterproof and hydrophobic material. The gypsum plaster board has the beneficial effects that the overall weight of the gypsum plaster board can be effectively reduced by adding the aerogel powder and the foam particles, so that the gypsum plaster board is convenient to manually carry and mount in building construction, and the waterproof hydrophobic material is additionally arranged on the surface of the gypsum plaster board, so that the waterproof capability of the gypsum plaster board is improved, and the waterproof effect of the gypsum plaster board is improved. The problems of blackening and mildewing of the gypsum plaster board are reduced, and long-time transportation of the gypsum plaster board is facilitated.

The invention relates to a preparation method of neural stem cells and application. In the invention, the high-efficiency expansion problem of the neural stem cells is solved through a method for adding a Notch signalling pathway receptor Notch1; the neural stem cells steady in function and high in activity can be obtained, and can be further differentiated into a large number of cortical functional neurons; the foundation is laid for obtaining the cortical functional neurons; and the purpose of screening multiple drugs at the same time can be satisfied.

The invention discloses a galvanized sheet surface protection coating solution, a galvanized sheet and a welding method. The galvanized sheet surface protection coating solution is prepared from the following materials in parts by mass: 5-15 parts of aluminum oxide, 20-80 parts of potash water glass, 20-100 parts of silica sol, 20-30 parts of methyl silicic acid, 10-20 parts of talcum powder, 1-5 parts of hydrolytic polymaleic anhydride and 1-20 parts of deionized water. According to the method, the problem of blackening of the galvanized sheet during welding is solved, the attractiveness of welding seams is enhanced, subsequent procedures are reduced, the production efficiency is improved, and manpower and time are saved.

The invention discloses a preparation method of an efficient monocrystalline silicon SE-PERC battery piece. The preparation method comprises the steps of raw material silicon wafer selection, texturing, diffusion, laser doping, phosphorosilicate glass removal, passive film deposition, passive antireflection film deposition, back laser grooving, silk-screen printing and sintering. Specifically, the raw material silicon wafer is a silicon wafer prepared through a wire cutting method, cutting lines on the silicon wafer are set to be in the X direction, the conveying direction of the silicon wafer is controlled to be in the Y direction in the phosphorosilicate glass removal step, and an included angle is formed between the Y direction and the X direction. The preparation method provided by the invention can effectively improve the overall conversion efficiency of the battery piece.

The invention discloses a black and odorous river water restoration method and device, and the method comprises the following steps: S1, building an embankment to provide support for a salvage device, to be more specific, 1, construction preparation: exploring the terrains of both sides of the river water, determining the building position and height of the embankment, and drawing a design drawing, and 2, site construction: constructing an embankment according to exploration data and a design drawing to make foundation preparation for river water treatment; S2, performing interception assembly installation, to be more specific, 1, interception preparation: making a matched interception net according to the width of an embankment and the depth of a riverbed, and 2, interception installation: determining the positions of two fixing bases , and connecting the two ends of an interception net to the two fixing bases; and S3, installing a salvaging device, to be more specific, 1, installation preparation: manufacturing a cross beam according to a river bed cross section reverse mold, and determining the length of a bearing beam according to the cross beam. Accumulation of inorganic matter in river water is reduced, accumulation of sludge at the bottom of the river water is reduced, nonferrous metal in the river water is reduced, colored suspended particles in the river water are reduced, and oxygen is supplemented to the river water.