88results about How to "Improve dehydration ability" patented technology

The invention discloses an efficient PP flame-retardant master batch which is prepared from the following raw materials in parts by weight: 60.5 to 78.6 parts of PP resin, 10.4 to 16.7 parts of talcum powder, 20.2 to 24.6 parts of modified nano aluminum hydroxide, 7.5 to 11.3 parts of an auxiliary flame retardant, 0.5 to 1.1 parts of a coupling agent, 0.6 to 1 part of a stabilizer, 1.5 to 2 parts of an antioxidant and 20.8 to 35.6 parts of isopropyl ether. The invention also discloses a preparation method of the flame-retardant master batch. The modified nano aluminum hydroxide plays a role of a main flame retardant, the structure that the aluminum hydroxide coats the red phosphorus contains two flame-retardant components of the aluminum hydroxide and the red phosphorus, meanwhile, the disadvantage of poor stability caused by small enough granularity of the red phosphorus is solved, in addition, the auxiliary flame retardant is added to further consolidate the flame-retardant performance, the auxiliary flame retardant is of a pure organic structure, has better compatibility with the base material and is more resistant to migration, and meanwhile, the auxiliary flame retardant is matched with the inorganic flame retardant to achieve the gain effect.

The invention discloses a hot pickled mustard tuber continuous dehydration centrifugal separator with the bottom upwards. The centrifugal separator comprises a vibration hopper used for conveying hot pickled mustard tubers, and a hollow shaft used for collecting materials, and a motor transmits rotating power to the hollow shaft through a power transmitting device; the lower end of the hollow shaft is provided with a hollow rotary table, a rotary drum is installed at the lower end of the hollow table with the bottom upwards, and the rotary drum rotates along with the hollow shaft and the hollow rotary table through rotary power provided by the motor; an inner barrel is outside the lower end of the rotary drum and used for receiving the hot pickled mustard tuber materials thrown out of the rotary drum, and the materials fall into a finished product groove through a material falling port in the bottom of the inner barrel; an outer barrel is further arranged outside the rotary drum and the inner barrel and used for collecting water thrown out of the rotary drum, and the water is drained out through a drainage pipe. The hot pickled mustard tuber continuous dehydration centrifugal separator has the advantages of being convenient to use, efficient, capable of achieving continuous production and low in cost. The hot pickled mustard tuber continuous dehydration centrifugal separator is stronger in dehydration effect and higher in dehydration degree, and meanwhile, the materials can continuously go out without barriers, and cleaning is facilitated.

The invention discloses a preparation method and application of micro nano cellulose. The preparation method comprises the steps of: hydrolyzing plant fiber by a hydrolyzing agent to obtain the micronano cellulose; wherein the hydrolyzing agent is composed of (meth)sulfonic acid, sulfuric acid and water. The preparation method is thorough in reaction, and the prepared micro nano cellulose has good particle size uniformity, and the method can be applied in industrial production of the micro-nano cellulose.

The invention discloses a method for dehydrating viscous waste by vacuum coupled physicochemical strengthening. The method comprises steps as follows: the viscous waste is prepared to form slurry withhigh water content firstly and is kept at certain temperature; phosphoric acid is formed by the aid of added auxiliary materials, and bound water and heavy metals are separated from viscous waste particles by the aid of phosphoric acid; phosphoric acid and the heavy metals are subjected to a reaction, and soluble metal salts are generated; the treated viscous waste is dehydrated by an improved dehydration device, finally, the harmless viscous waste with low water content is obtained, water obtained by dehydration is treated by ion exchange resin, and phosphoric acid is recovered. The problemsof low dehydration efficiency and high heavy metal content of a traditional viscous waste treatment mode are solved; the treated viscous waste can realize harmless discharge and recycling.

A novel high-pressure diaphragm filter plate is composed of two diaphragm plates 1, a middle supporting plate 16, a filter plate annular hoop 6 and the like. The filter plate is circular, a feeding hole is arranged in the center of the filter plate, and feeding is smooth and uniform; the diaphragm plates 1 have relatively high compressive strength and good deformation ability, and are fixed at two sides of the middle supporting plate 16 respectively; the filter plate annular hoop 6 tightly hoops the excircle of the diaphragm plates 1 and the middle supporting plate 16, so that the diaphragm plates 1 can bear higher feeding pressure and tympanic membrane pressure; the novel high-pressure diaphragm filter plate can bear the 3.0-8.0 MPa feeding pressure and tympanic membrane pressure; after a diaphragm movable plate 2 is trumped up, the filter chamber volume is reduced by 1 / 3 or more, so that a filter press adopting the filter plate has a super-strong dehydration ability, and moreover, has the advantages of simple structure, reliable performance, low cost, large specification and the like.

The invention provides a lentivirus packaging method which comprises the following steps: (1) adding plasmids into a serum-free culture medium to obtain a plasmid mixture; the plasmids comprise lentivirus packaging plasmids and target expression plasmids; the lentivirus packaging plasmids comprise psPAX2 and pMD2. G; (2) adding the transfection medium into a serum-free culture medium to obtain a transfection reagent; and (3) uniformly mixing the plasmid mixture and a transfection reagent, adding the mixture into the tool cells, transfecting and culturing for 2-10 hours, replacing the culture medium with a serum-reduced culture medium, continuously culturing, collecting a supernatant, and concentrating to obtain the lentivirus. In the lentivirus packaging method provided by the invention, the target expression plasmid and the two packaging plasmids are utilized to carry out co-transfection on the tool cells, so that the lentivirus can stably package the tool cells, and the lentivirus packaging efficiency and the lentivirus titer are improved.

The invention provides a novel papermaking felt which is sequentially woven from a fiber surface layer, a fiber core layer, a base cloth layer and a fiber back layer from top to bottom in a needled mode. The base cloth layer is formed by a strong cloth layer which is integrally thickened and reinforced and woven from warps and wefts. Wraps on the upper layer of the base cloth layer are wool-like yarns, warps on the lower layer are polyamide piled yarns, and wefts are polyamide long filaments. A standard line colored tape is arranged on the front of the novel papermaking felt, penetrates two sides of the felt and intersects with the felt vertically with a 90-degree angle formed in between. An arrow indicting the running direction of a papermaking machine is arranged at each end of one side of the standard line colored tape. The novel papermaking felt is high in strength, high in dewatering capability and long in service life, and improves paper quality. In addition, the standard line colored tape is arranged on the papermaking felt to adjust the position of the papermaking felt on the papermaking machine and ensure that the felt runs normally on the papermaking machine, and the service life of the papermaking felt is prolonged.