12results about How to "Improve physical strength" patented technology

The present application relates to a kind of biodegradable dark color mulch and its preparation method, and dark color mulch is made of cellulose, hemicellulose and degradable coating.The manufacturing method includes the preparation of dark color mulch substrate, coating layer coating.It specifically includes slurry compounding, beating, additive addition, is formed by papermaking, dehydration, pre-drying, coating, sizing, drying, calendering, product after drying.The local film has good wet strength, light resistance, weather resistance, heat preservation and entropy increasing effect.The results of farmland degradation experiment show that the mulch can be biodegraded after 50~60 days, and the biodegradation rate is more than 90%.

The invention discloses a high-frequency defibering-air flotation synergistic waste paper fine screening residue complete recycling system and method, and belongs to the technical field of waste paper pulping and solid waste recycling. According to the system, through a high-frequency defibering unit, an air flotation separation unit, a fiber recovery unit and a slag discharge energy regeneration unit which are sequentially connected in a closed loop mode, complete recycling of fine screening slag is achieved. The method comprises the following steps: carrying out high-frequency defibering on fine screening slag slurry at a specific low concentration (0.5%-1.1%); controlling the slag discharge rate of the air flotation separation unit to be 10-20%, and separating out clean slurry and high-calorific-value scum; concentrating and recycling the clean slurry; and the dehydrated scum is converted into biomass solid fuel with a calorific value of not less than 20MJ / kg or is pyrolyzed to produce gas. According to the invention, a complete industrial closed loop from'waste residue 'to'resource' is formed, efficient recovery (more than or equal to 80%) of fibers, deep removal (more than 90%) of large stickies and energy utilization of scum are synchronously realized, and the problem of treatment and disposal of terminal waste residue in the traditional process is solved.

The application discloses a kind of ancient ship rotten wood protection repair method, for the pine, fir, camphor wood on ancient ship, after the oxidation-reduction reaction of iron and the oxidation of reduced state sulfur, cause the degradation and rotten of wood, with micro-nano lime and ethyl cellulose deacidification reinforcement;For the crack and incomplete parts of ancient ship, make into imitation wood grain paste with tung oil etc. and fill the vacancy;For broken wood block, make into rotten wood adhesive with tung oil etc. and bond;For the ancient ship protection after repair, use fluorine rubber as sealing agent, provide a good environment for cultural relics, achieve waterproof, mildewproof, insect prevention and other effects.The method of the application replaces the traditional polyethylene glycol penetration spray method, rosin paraffin hot infiltration method, polyvinyl alcohol, polyethylene glycol penetration reinforcement, spraying raw tung oil, raw lacquer, B72 and epoxy resin and other protection methods, and uses fluorine rubber as ancient ship sealing agent, achieves the purpose of traditional and modern material combination of cultural relic protection "repairing old as old, minimal intervention".

The application belongs to the technical field of papermaking, and particularly relates to a method for preparing environment-friendly decorative base paper with high water absorption and low air permeability by using bamboo pulp fibers, which comprises the following steps: S1, preparing wet pulp; S2, mixing pulp; S3, preparing base paper; S4, preparing coating; and S5, paper surface coating treatment. The decorative base paper prepared by the method for preparing environment-friendly decorative base paper with high water absorption and low air permeability by using bamboo pulp fibers has the advantages of low filler content, high physical strength, good water absorption and low air permeability.

The invention relates to the technical field of preparation of specialty paper, and discloses ultrathin vulcanized fiber paper for a high-frequency copper-clad plate and a preparation method of the ultrathin vulcanized fiber paper. The preparation method comprises the following steps: mixing cotton fibers and water, pulping, adding an organic solvent, injecting a glucosyl-terminated aramid solution, carrying out in-situ precipitation, and separating out a product to obtain a cotton fiber-aramid deposited fiber compound; dispersing the cotton fiber-aramid fiber deposition fiber compound into water, and sequentially performing papermaking, drying, zinc chloride solution gelling, desalting and drying. The aramid fibrid is introduced into the vulcanized fiber paper with the cotton fiber as the base material in a special mode, the strength of the vulcanized fiber paper can be improved to a greater extent, and therefore the vulcanized fiber paper can achieve enough physical strength under the small thickness.

This invention relates to the field of ceramic preparation technology, specifically to a preparation process for functional ceramics containing multiple trace elements, comprising the following steps: S1: Extracting minerals containing multiple elements from selected raw ore; S2: Mixing the multiple elements extracted from the raw ore and converting them into a multi-liquid mixture; S3: Heating the untreated ceramic blank to 800 degrees Celsius; S4: Allowing the heated blank to cool naturally indoors to 30 degrees Celsius; S5: After cooling, injecting the multi-liquid mixture prepared in step two multiple times using an atomization method, allowing it to dry after each injection, for a total of 3-5 injections until the mixture is completely absorbed into the blank. This invention, by uniformly introducing multiple trace elements into the ceramic, yields functional ceramics with excellent strength, durability, and rich trace element properties, which are beneficial to human health.

The application relates to the field of material defoaming treatment, in particular to a device for reducing silicone calendering bubbles, which comprises a uniform feeding mechanism, a sealing connection mechanism, a defoaming guide mechanism and a defoaming discharging mechanism; the uniform feeding mechanism comprises a feeding pipe and a flow control piece; the feeding end of the feeding pipe is sealingly connected with a rubber material barrel; the flow control piece is installed on the feeding pipe and used for controlling the flow of silicone in the feeding pipe; the discharging end of the feeding pipe is sealingly connected with the defoaming guide mechanism through the sealing connection mechanism; the defoaming discharging mechanism is installed on the discharging end of the defoaming guide mechanism and is used for defoaming treatment of silicone. The structure can improve the stability of silicone flow guide, promote the discharge of bubbles of silicone, and effectively reduce the bubbles generated in the silicone calendering process.

The invention provides a liquid beverage nanofiber composite filter material and a preparation method thereof, and belongs to the field of filter paper. The nanofiber composite filter material for the liquid beverage comprises a wood pulp fiber bottom layer, a wood pulp fiber composite nano microfibril surface layer and a TEMPO oxidized nano cellulose coating layer in a mass ratio of (8-10): (5-7): 1, wherein in the wood pulp fiber composite nano microfilament surface layer, the mass ratio of wood pulp fibers to nano microfilaments is 1: (0.15-0.3); preparing by adopting multi-layer flow slurry; the filter has the characteristics of high filtering speed, high dry and wet physical strength, high filtering precision and high additional value.

The application belongs to the technical field of pedal structure, and particularly relates to a double-layer pedal, 1. comprising a receiving blow molding plate and a connecting plate which are arranged in a stacked mode and fixed by screws, the receiving blow molding plate has a first surface which is attached to the connecting plate, the first surface is provided with a first connecting part, the first connecting part is arranged as a convex structure which faces the connecting plate, the connecting plate comprises a fixed plate body and a second connecting part which is arranged on the fixed plate body and matched with the first connecting part, and the second connecting part is arranged as a convex structure which faces the opposite direction of the receiving blow molding plate. In actual application, the first connecting part and the second connecting part can increase the firmness and physical strength of the pedal.

The invention discloses a preparation process of a controlled-release fertilizer taking steel slag as a base material, which comprises the following steps: grinding and screening the steel slag to obtain 40-400-mesh steel slag powder; dissolving half of the solid nutrient in water to obtain a nutrient solution, adding the steel slag powder and the bio-based auxiliary material, fully mixing and adsorbing, and drying to obtain a nutrient-loaded substrate material; continuously mixing the residual solid nutrients with the nutrient-loaded substrate material, adding the coating material A as a binder, carrying out blending granulation in a granulator, and drying to obtain an inner core; adding the inner core into a coating machine, adding a coating material B for coating, and drying to obtain the slow / controlled-release fertilizer. According to the invention, the steel slag powder and the bio-based auxiliary material are used as carriers, heavy metal pollutants are stabilized while the soil agglomeration structure is improved through double mechanisms of physical adsorption and chemical immobilization, and the effects of slow / controlled-release fertilizer and soil improvement are realized.

The utility model relates to a stack type structure of a moisture generator, the structure comprises a support skeleton and a buckle, the support skeleton comprises a top protrusion and a bottom protrusion, the top end of the support skeleton extends out of the top protrusion, the bottom end of the support skeleton extends out of the bottom protrusion, an electrode is arranged on the surface of the protrusion, a slurry pool is arranged in the support skeleton, and the buckle is arranged in the slurry pool. Moisture absorption slurry is contained in the slurry pool, the adjacent moisture generators are stacked, and electrodes of the adjacent moisture generators make contact through buckles in a buckled mode. Compared with the prior art, the utility model is convenient for three-dimensional stacking for series / parallel connection of moisture generators, and saves space.

The utility model discloses an adhesive tape laminating device capable of preventing bubble generation, which comprises a base, a driving component, an extruding component, two movable adjusting components and two pressing components, supports are arranged on two sides of the top surface of the base, vertical plates are arranged on the top surfaces of the two supports, a guide rod is arranged between the two vertical plates, a sliding sleeve is connected onto the guide rod in a sliding manner, and the pressing components are arranged on the sliding sleeve. A cylinder is arranged at the bottom end of the sliding sleeve, a mounting frame is connected to the piston end of the cylinder, a pressing roller is rotationally arranged in the mounting frame, the driving assembly is arranged on one side of the vertical plate and connected with the sliding sleeve, the extrusion assembly is arranged on one side of the mounting frame and connected with a scraper, and the two movement adjusting assemblies are oppositely arranged on the base. The two pressing assemblies are arranged on the two movable adjusting assemblies correspondingly. Therefore, through the cooperative reciprocating motion of the compression roller and the scraper blade, bubbles generated on the bonding surface can be effectively eliminated in the adhesive tape bonding process, so that the bonding performance and the physical strength of the adhesive tape are improved.