872results about How to "Inhibit entry" patented technology

The invention relates to a cup-shaped prosthesis shaft consisting of an air-tight and essentially rigid material comprising a sealing means for protecting against the entry of air from the proximal open side, said shaft being used in prostheses for replacing limbs. The inside of the shaft is provided with at least one pump device such that relative movements between the stump and the shaft during the use of the prosthesis pump air out of the inside of the prosthesis shaft via flow channels and monoway valves to the outside of the prosthesis shaft. The pump action is obtained by varying the volume of a compartment formed from flexible or elastic films, said compartment being arranged adjacently to the strump in the main extension thereof. The compartment is either fixed to the inner wall of a rigid prosthesis shaft, or built into the wall of a flexible and elastic removable stump coating which is arranged, as part of the prosthesis shaft, between the stump and a rigid frame.

The invention discloses a high-performance polycarboxylate water reducing agent. The polycarboxylate water reducing agent has a structural general formula shown as a structural formula (I). The invention further provides a preparation method of the high-performance polycarboxylate water reducing agent. Apart from a polyether macromonomer and an unsaturated carboxylic acid monomer, an unsaturated phosphate monomer is added to obtain a product, namely, the high-performance polycarboxylate water reducing agent having a phosphate structure. The polycarboxylate water reducing agent disclosed by the invention is safe and simple in preparation process, environmentally friendly, low in energy consumption, low in cost, and suitable for industrial large-scale production. In the structural formula (I), R1 is -H, -COO- or -CH2COO-; R2 is -H or -CH3; R3 is -H or -CH3; R4 is -H or -CH3; R5 is -H or -CH3; R6 is -CH2- or -CH2CH2-; X, Y, Z and n are integers; X=1-100; Y=1-100; Z=1-100; and n=22-53.

The present invention belongs to a building mortar, and particularly relates to a mortar for concrete base surface repair, and a preparation method thereof. The mortar comprises the following raw materials by mass: 20-80 parts of silicate cement, 20-100 parts of sulphoaluminate cement, 80-190 parts of aggregate, 40-100 parts of a mineral admixture, 30-80 parts of an aqueous epoxy emulsion, 0.2-0.5 part of cellulose ether, 0.1-0.5 part of anti-cracking fibers, and 20-85 parts of water. The mortar of the present invention has characteristics of strong adhesion, excellent cracking resistance, excellent compression resistance, high bonding strength, and low price.

The invention provides a broad spectrum heavy metal activity deactivator preparation method. The present invention relates to a soil conditioning agent preparation method, which comprises the following steps: (A) taking humic acid-rich peat, digest compost or a forest soil humus layer, and carrying out screening to provide a spare use; (B) adding the humic acid-rich material to HCl or HNO3 to soak, and stirring 2-3 times; (C) filtering the soaked material with a bamboo drying pad, washing 2-3 times with clear water, and carrying out air drying to a moisture content of less than 5%; (D) sequentially adding ZnSO4.7H2O, sodium silicate and sodium selenite to the material obtained from the step (C), carrying out aging on the mixed material for 2-3 days and uniformly mixing; and (E) adding limestone powder to the material obtained from the step (D), and completely and uniformly mixing to prepare the broad spectrum heavy metal deactivator. With the combination inhibitor prepared by the preparation method, activities of soil heavy metals can be significantly inactivated, the heavy metals can be inhibited from entering the food chain, and risks on human health by the heavy metals can be reduced.

The present invention relates to a liquid supply system and a liquid consumption apparatus with the same, which can inhibit the dust form entering from the inlet in the process of supplementing liquid, without enabling the operation of supplementing the liquid from the inlet of a liquid container. The position of the upper portion of one side of the liquid container is provided with an inlet with the opening arranged towards the horizontal direction, and when the liquid is supplemented, the inlet is arranged upwards to lay the liquid container on one side thereof. Further, a cover component for covering on the inlet is arranged, the cover component is located at the upper side of the liquid container in the state that the liquid container is arranged on one side thereof, the position of one side opposite to the side provided with the ink inlet, of the cover component is supported by a shaft. Therefore, dust is difficult to accumulate near the inlet, thereby preventing the dust from entering from the inlet in the process of supplementing the liquid. Additionally, in the state that the liquid container is arranged on one side thereof, the cover plate can rotate towards the direction far away from the liquid container, thereby easily performing the operation of supplementing liquid.

The package has a base body (51) with a mounting portion for mounting a light-emitting unit. A frame body is joined to an outer edge of the body (51) to surround the portion. A wiring conductor has its one end formed on an upper surface of the base body, to electrically connect an electrode of the light emitting unit. The light transmitting unit (53) is inside the frame body to cover the light emitting unit. - Independent claims are also included for the following: - (A) a light-emitting apparatus comprising a package for housing a light emitting unit - (B) an illumination apparatus constructed by setting up a light-emitting apparatus in a predetermined arrangement.

Disclosed herein is a reactor plate which prevents the entry of foreign matter from the outside and the pollution of a surrounding environment. A reactor plate (1) includes a reaction well (5), a reaction well channel connected to the reaction well (5), and reaction well air vent channels (19) and (21) connected to the reaction well (5). The reaction well channel has a main channel (13), a metering channel (15) branched off the main channel (13), and an injection channel (17) of which one end is connected to the metering channel (15) and the other end is connected to the reaction well (5). The main channel (13) and the reaction well air vent channel (21) can be hermetically sealed. The injection channel (17) is formed narrower than the metering channel (15) not so as to allow the passage of a liquid at a liquid introduction pressure applied to introduce the liquid into the main channel (13) and the metering channel (15) and at a purge pressure applied to purge the liquid from the main channel (13) but so as to allow the passage of the liquid at a pressure higher than the liquid introduction pressure and the purge pressure.

The invention discloses a silsesquioxane cross-linked silicon nitrogen phosphor synergic anti-flaming water-borne epoxy resin and a preparation method thereof. The water-borne epoxy resin is prepared from 40-80wt% of epoxy resin base stock, 2-12wt% of silicon nitrogen phosphor containing silsesquioxane epoxy resin curing agent, 0.5-2wt% of curing accelerator, 5-20wt% of foaming agent, 5-20wt% of charring agent, 3-20% of charring catalyst, 2-12wt% of pigment filler and 0.1-2.5wt% of flatting agent, and the sum of the content of the components is 100%. According to the invention, the silicon nitrogen phosphor containing silsesquioxane epoxy resin curing agent is taken as a curing agent and is synergic with the charring agent, the foaming agent and the charring catalyst so as to obviously improve the flame retardant property of the water-borne epoxy resin; the acquired water-borne epoxy resin has high bonding force with the metal surface, has high heat resistance and has an oxygen index of above 32; the preparation method is simple, safe and low-cost; the water-borne epoxy resin has an excellent application prospect.

The invention belongs to the field of continuous casting of iron and steel, and particularly relates to a method for controlling steel ladle tapping slag by blowing argon gas to an annular steel outlet in the bottom of a steel ladle. According to the method, annular purging plug bricks with the air permeability width of 50-300 mm are arranged around the steel outlet in the bottom of the steel ladle; in the steel ladle pouring process, when the height of a molten steel pouring liquid surface in the steel ladle is 150-400 mm, the argon gas blowing pressure is controlled to be 0.2-0.7MPa, so that the argon gas is blown into liquid steel through the annular purging plug bricks, and the steel ladle tapping slag is inhibited. The method can effectively inhibit the tapping slag caused due to conflux vortexes and drainage sunk pits in the steel ladle pouring process, and the yield of the liquid steel is further increased.

The invention discloses a silicon-nitrogen-phosphate coordinating flame retardant epoxy resin powder coating suitable for a steel tube and a preparation method of the silicon-nitrogen-phosphate coordinating flame retardant epoxy resin powder coating. The silicon-nitrogen-phosphate coordinating flame retardant epoxy resin powder coating is prepared from the following components in percentage by weight: 30-80wt% of a silicon-phosphate modified epoxy resin base material, 2-10wt% of an epoxy resin curing agent containing silicon and nitrogen, 5-15wt% of a charring agent, 5-20wt% of a foaming agent, 5-20wt% of a char forming catalyst, 0.5-2wt% of a curing accelerator, 2-10wt% of pigments and fillers and 0.1-2wt% of a flow agent and is prepared by the following steps: sequentially modifying an epoxy resin base material by organic silicon and phosphorus, and then mixing the modified epoxy resin, the epoxy resin curing agent containing silicon and nitrogen, the charring agent, the foaming agent, the char forming catalyst, the curing accelerator, the pigments and the fillers and the flow agent, wherein the oxygen index of the epoxy resin after modification and curing is higher than 33. The silicon-nitrogen-phosphate coordinating flame retardant epoxy resin powder coating is sprayed on a preheated steel tube by adopting an electrostatic spraying method, and the fire-resistant time at the high temperature of 800-1000 DEG C is longer than 2h.

The invention belongs to the technical field of polymer-metal functional composite material preparation, and relates to a preparation method of polymer-rare earth ion luminous micelles. An amphipathy two-block AB type copolymer or a three-block ABA type copolymer is selected to serve as a first ligand, and molecular weight of each block and total molecular weight of a segmented copolymer are respectively determined through a testing method of nuclear magnetic resonance spectra and a gel permeation chromatography; oxide of rare earth element is contained in a beaker, excessive hydrochloric acid is added for stirring until the oxide is completely dissolved; then the beaker is placed in a water bath until liquid in the beaker is dried to obtain trivalent rare earth chloride crystals; and a polymer solution and a rare earth ion solution are mixed in proportion, organic conjugation micromolecules are added to serve as a second ligand, the polymer solution, the rare earth ion solution and the organic conjugation micromolecules are evenly mixed to be placed in a reaction vessel, and condensation backflow is carried out at a constant temperature to enable the copolymer and rare earth ions to conduct a complexing reaction to obtain the polymer-rare earth ion luminous micelles. The preparation method is simple in process, reliable in principle, strong in operability and stable in product structure.

The invention relates to anti-corrosion building concrete. The anti-corrosion building concrete comprises cement and an admixture, and further comprises a preservative and a dispersing agent, wherein the preservative mainly comprises aluminum silicate and barium hydroxide; the dispersing agent is mainly silica fume; the preservative is 10%-15% of the total weight of the concrete; the dispersing agent is 10%-15% of the total weight of the concrete. The anti-corrosion building concrete disclosed by the invention has good anti-corrosion anti-erosion performances; the dispersing agent which is composed of methyl cellulose and silica fume can be used for uniformly dispersing the preservative, so that the anti-corrosion effect of the preservative can be brought into player better; isobutyl triethoxy silane is penetrated into the concrete to generate chemical reaction with air exposed in an acid or alkali environment as well as water molecules in a substrate, so that a water-repellent treatment layer is formed, and therefore, the water is restrained from entering the substrate.