35results about How to "Little impact on liquidity" patented technology

The invention relates to a large casting-molding self-combined silicon carbide product. The method comprises the following steps: taking silicon carbon particulates and fine powder, silicon carbon powder, silica powder, silicon powder, carbon black, molybdenum disilicide micro powder, active magnesium oxide and a water reducer as powder; by taking ludox as a binding agent, molding by adopting a vibrating casting manner; sintering the molded green body under a protective atmosphere after conserving and baking, wherein the highest sintering temperature is 1300-1500 DEG C; sintering and cooling to room temperature along with a furnace, so as to prepare the self-combined silicon carbide product. The large and profile self-combined silicon carbide product can be prepared, and has the advantages that the size and the shape of the product are not limited, performance is excellent, and the like, and the prepared self-combined silicon carbide product can be applied to the fields such as a blast-furnace tuyere and a cooling wall tile in the iron and steel industry and an aluminum electrolytic cell in the non-ferrous industry.

The invention discloses a halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material and a preparation method thereof. The composite material consists of the following components in percentage by mass: 25 to 80 percent of polyolefin resin, 5 to 60 percent of plant fiber, 0.5 to 20 percent of compatilizer, 0 to 30 percent of flexibilizer, 0.5 to 8 percent of dispersant, 5 to 40 percent of flame retardant and flame retardance synergist and 0 to 1 percent of antioxidant. Compared with the conventional wood plastic composite material, the halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material has the characteristics of simple production flow, little using amount of the flame retardant, good halogen-free flame retardant effect, wide range of molding modes and the like and is applicable to various injection molding products, such as electric appliance shells, automobile parts, furniture, buildings and other parts.

The invention discloses an urban river ecological remediation system based on waterfront movement upper limb traction device aeration. The urban river ecological remediation system is constituted by connecting an energy transmitting and converting unit, an upper limb traction unit, a microporous aeration unit and a landscape plant restoration unit in sequence, wherein the energy transmitting and converting unit is composed of an outer cylinder, a middle cover, an inner cylinder, a packing cup, a steel ball one-way valve, a hollow base and an inverted-cross-shaped support, the upper limb traction unit is composed of a dual-track pulley, an upper steel wire rope, a lower steel wire rope, a spring fastener, a metal ring and an upper limb traction device, the microporous aeration unit is composed of a three-way unit, an air delivery pipe, an air stopping valve and a microporous aeration pipe, and the landscape plant restoration unit is composed of a fixed rotary shaft, a connecting ring, emergent aquatic plants, a filler string net, a cylindroid frame and a weaving net cover. Mechanical energy generated when the upper limb traction device is utilized is converted into mechanical energyof an aeration device, thus the dissolved content of oxygen in water is increased, and through combination of an ecological remediation floating floor which can move with water current, eutrophic urban rivers are remedied, and the urban river ecological remediation system has the advantages of being environmentally friendly, attractive, simple in structure, economical and practical.

The invention relates to aqueous-phase easy-to-disperse metal ion loaded hyperbranched polymer and a preparation method thereof. The preparation method includes: mixing molecule A containing substancein a powder form with a water solution of molecule B containing substance while stirring, and dropwise adding a metal salt solution into a mixed system while stirring to obtain the hyperbranched polymer. A molecular structural formula of the hyperbranched polymer prepared by the method is mainly composed of molecule A, molecule B and metal ion Mn+, carboxyl in the molecule A, amido in the molecule B and the metal ion Mn+ are in bond connection through ion bonds and coordination bonds to form a triangular bonded structure, and the structural formula is shown as follows. The preparation methodtakes water as a reaction solvent, thereby being environment-friendly, little in equipment input, simple in operation, mild in condition and low in cost; the polymer prepared by the method has littleimpact on matrix flowability, has the characteristic of aqueous-phase easiness in dispersion and is high in processability.

The invention discloses a halogen-free flame-retardant polypropylene composite material with ultra-high fluidity and a preparation method thereof. The halogen-free flame-retardant polypropylene composite material consists of polypropylene, P-N intumescent flame retardant, a compatibilizer, It is composed of hyperdispersant, filler with high aspect ratio, nanometer filler, lubricant and antioxidant. Its preparation method is very simple. Put each component into a twin-screw extruder for extrusion and granulation. The halogen-free flame-retardant polypropylene composite material of the invention has ultra-high fluidity, excellent flame-retardant performance, simple preparation process, low cost, halogen-free and environment-friendly.

The invention discloses a calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder. The castable comprises tabular corundum aggregate and fine powder, activated aluminium oxide micropowder, calcium aluminate cement, CaCO3 micropowder and a water reducing agent, wherein the tabular corundum aggregate and fine powder, the activated aluminium oxide micropowder, the calcium aluminate cement and the CaCO3 micropowder are 85-95%, 2-10%, 0.1-2% and 0.1-5% of the total weight of the tabular corundum aggregate and fine powder, the activated aluminium oxide micropowder, the calcium aluminate cement and the CaCO3 micropowder respectively, and the water reducing agent is 0.1-0.5% of the total weight of the four raw materials. The castable adopts the calcium carbonate micropowder as an additive, so that the cost is lower, and the thermal shock stability of the castable is improved greatly.

The application discloses an underwater mobile device and a fishpond water environment monitoring robot, which belong to the field of agricultural technology. The underwater mobile device includes a waterproof cabin, a rotating seat, two horizontal propellers and at least two vertical propellers. The rotating base and the waterproof chamber are connected in rotation, two horizontal propellers are arranged symmetrically along the center of gravity of the rotating base, and at least two vertical propellers are evenly arranged around the center of gravity of the rotating base. The detection assembly of the underwater mobile device disclosed by the present invention does not produce a large swing; in addition, the rotating seat is only a small structure on the underwater mobile device, and the rotation of the rotating seat has relatively little influence on the fluidity of water , thereby improving the accuracy of the detection result of the detection component. The underwater mobile device disclosed by the present invention is mainly used for monitoring the water quality in the pond, monitoring parameters such as the oxygen content, pH value and temperature of the pond water, so as to judge whether the water quality in the pond is suitable for fish growth.