17results about How to "Maintain hardness" patented technology

The invention provides lactobacillus mucilaginosus and application thereof, and belongs to the technical field of microorganisms. According to the present invention, the Latin of the Lactobacillus mucus fermentation is Limosilactobacillusfermentum, the preservation name is Lactobacillus mucus fermentation MQ10, the preservation place is China Center for Type Culture Collection (CCTCC), the preservation date is July 22, 2024, and the preservation number is CCTCC NO: M 20241616. The strain has a broad-spectrum antibacterial effect and can inhibit growth and reproduction of various microorganisms. The biological fresh-keeping product prepared from the fresh-keeping agent can reduce the decay rate of food and the browning rate of fruit stems of fruits and vegetables, maintain the content and hardness of soluble solids, slow down the aging decay speed of the food in the storage period and prolong the storage period. Due to the characteristics, the lactobacillus mucilaginosus is expected to become a green and environment-friendly biological fresh-keeping agent, and the quality and the safety of foods are improved.

The invention belongs to the technical field of ceramic tiles, and particularly discloses a transparent polycrystalline alumina super-wear-resistant diamond glaze ceramic tile and a preparation method thereof.The transparent polycrystalline alumina super-wear-resistant diamond glaze ceramic tile comprises a green body layer, a ground coat layer, a pattern layer and a transparent polycrystalline alumina super-wear-resistant diamond glaze layer from bottom to top; the transparent polycrystalline aluminum oxide super wear-resistant diamond glaze layer is prepared from the following raw material components in parts by weight: 25 to 40 parts of potassium feldspar, 12 to 25 parts of albite, 5 to 15 parts of wollastonite, 5 to 15 parts of kaolin, 3 to 15 parts of quartz, 4 to 20 parts of transparent polycrystalline aluminum oxide and 8 to 25 parts of wear-resistant frit, so that a ceramic tile product can keep hardness and wear resistance in a use process. Besides, the transparent polycrystalline aluminum oxide has good light transmittance and good transparency, does not influence color development of inkjet patterns, and ensures that the surface glaze layer has good light transmittance while increasing the hardness and wear resistance of the surface glaze layer, so that the ceramic tile has good color development and decoration as far as possible.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The present invention provides a seamless capsule that does not soften even in a high-temperature and high-humidity environment, maintains hardness in a tropical zone, etc., and can perceive the breakage of the capsule provided by applying a force to the capsule. The present invention relates to a seamless capsule including a capsule content and a shell layer that coats the capsule content, and a method for producing the same. The shell layer comprises at least deacylated gellan gum and modified starch. The capsule content comprises an oily component.

The objective of this invention is to provide a surface-treated nanocellulose masterbatch that yields a rubber composition exhibiting excellent homogeneous dispersion of nanocellulose, extensibility, hardness, water resistance, and tear resistance. A surface-treated nanocellulose masterbatch comprises a rubber component, nanocellulose, a methyl and / or linear resorcinol-formaldehyde initial condensate, and formaldehyde, obtained using an inorganic salt as a coagulant. Relative to 100 parts by weight of the rubber component, it contains 0.3 to 15 parts by weight of the nanocellulose; relative to 1 part by weight of the nanocellulose, it contains 0.03 to 1.2 parts by weight of the methyl and / or linear resorcinol-formaldehyde initial condensate, and 0.02 to 0.8 parts by weight of the formaldehyde. The aforementioned problem is solved by the surface-treated nanocellulose masterbatch described above.

This invention relates to a high-temperature resistant, room-temperature curing anti-corrosion coating and its preparation method. The high-temperature resistant, room-temperature curing anti-corrosion coating includes component A and component B. Component A includes epoxy resin, small molecule hydroxyl compounds, additives, and inorganic fillers. Component B includes a curing agent. The epoxy resin includes phenolic epoxy resin, which includes various phenolic epoxy resins with different viscosity gradients. The coating of this invention, by using phenolic epoxy resins with different viscosity gradients, can improve the adhesion between the coating and oil pipeline materials, and also improves the resistance to different temperatures and humidity levels. It has strong adhesion to oil pipelines, is easy to apply, and possesses a variety of excellent properties such as high solids content, impermeability, corrosion resistance, high temperature resistance, and thermal stress resistance. It can be applied in harsh environments such as alternating high and low temperatures, alternating dry and wet conditions, alternating strong acids and alkalis, and high abrasion, and is suitable for long-term corrosion protection of oil pipelines.

The object of the present invention is to provide a decellularized graft which has any thickness and specific shape. The problem can be solved by a decellularized cellular structure of the present invention, which is a decellularized cultured cellular structure, characterized by having porosity ratio of 30% to 80%.

The invention provides a zero-formaldehyde high-fastness transparent waterproof fabric coating material and a preparation method thereof, and relates to the technical field of high polymer materials. The coating material is prepared from water, a compound emulsifier, a soft monomer, a hard monomer, a hydrophilic monomer, a crosslinking monomer, a crosslinking aid, an initiator, an oxidizing agent, a reducing agent, a defoaming agent, a sterilizing agent and a PH regulator. The defects in the prior art are overcome, generation of harmful substances such as formaldehyde is avoided by selecting specific environment-friendly raw materials and an innovative technological process, high fastness and good transparency of the coating are ensured, and the comprehensive requirements of modern textiles in the aspects of environmental protection, functionality and attractiveness are met.

The invention discloses a production process of a new material for paper decoration, and relates to the technical field of decoration material production, the dependence on natural mineral products is abandoned, renewable plant fiber paper is adopted as a core base material, the radioactive risk of a raw material source is eliminated, and the environmental safety of long-term indoor use of the material is ensured; in order to solve the problems that paper is insufficient in strength and poor in weather resistance, a composite modifier containing waterborne polyurethane resin and nano silicon dioxide is designed, the modifier fully permeates into the interior and gaps of a paper fiber network through an ultrasonic-assisted impregnation technology, and in the subsequent drying and hot pressing process, the strength of the paper is greatly improved. The resin is crosslinked and has a synergistic effect with the nanoparticles, a compact organic-inorganic hybrid protection layer is formed on the surfaces of the fibers and among the fibers, and the protection layer obviously enhances the mechanical strength, wear resistance and moisture resistance of the paper, so that the paper meets the use requirements of decorative plane materials, and meanwhile, unification of safety and economical efficiency is realized.

The invention discloses an EB coating for automotive trim. The EB coating comprises a polyurethane modified acrylic prepolymer, an ethylene glycol diacrylate grafting monomer and ferromanganese LDHs (layered double hydroxides), wherein the use amount of the polyurethane modified acrylic prepolymer is 50-90 parts by weight, the use amount of the ethylene glycol diacrylate grafted monomer is 5-25 parts by weight, and the use amount of the ferromanganese LDHs is 0.1-1 part by weight; the ferromanganese LDHs are layered double hydroxides obtained by carrying out hydrothermal reaction on manganese salt and ferric iron salt under the action of NaOH and sodium nitrite. According to the EB coating for the automotive trim, the adhesive force and the hardness can be kept, meanwhile, the wear resistance and the scratch resistance of the coating are greatly improved, so that the PMMA thick sheet blister plate for the automotive trim can be applied to most areas of the earth, and an excellent choice is provided for a high-end automotive trim material.

When a composition including (A) an organosilicon compound represented by formula 1 and (B) when an organosilicon compound having at least one group selected from a polysulfide group, a thioester group, and a mercapto group and having an alkoxysilyl group is added to a rubber composition, a rubber composition is imparted that can achieve low fuel consumption and wear resistance while the workability of the composition and the hardness and tensile properties of cured products thereof are maintained. (R1 and R2 independently represent an alkyl group or an aryl group, R3 represents a hydrogen atom, an alkyl group, or an aryl group, R4 independently represents a hydrogen atom or a hydrocarbon group that may have a substituent other than a sulfur atom-containing group and may include a heteroatom other than a sulfur atom (adjacent R4 may crosslink with one another to form a ring), Z represents a divalent group not having a polysulfide group, a thioester group, or a mercapto group, and n represents an integer of 1-3.)

The present invention belongs to the technical field of food preservation, and specifically relates to a preparation method of a nanofiber cling film, a product obtained and an application thereof. The nanofiber cling film provided by the present invention is prepared from beet pectin solution and curcumin alcohol solution containing hesperidin by an anti-solvent method into a nanoparticle solution, and then a spinning aid is added to the nanoparticle solution to prepare a nanofiber film by electrostatic spinning technology. The nanofiber cling film prepared by the present invention has the advantages of high stability and significant antibacterial effect. The present invention applies the nanofiber cling film as a cling film to the preservation of crispy meat grass carp, which can effectively maintain the hardness, cohesion, adhesion, chewiness, resilience and elasticity of the crispy meat grass carp, maintain the unique taste of the crispy meat grass carp, and can also effectively extend the shelf life of the crispy meat grass carp, which is a more ideal crispy meat grass carp cling film.

This invention provides a high-performance copper-phosphorus alloy based on grain optimization and its preparation method. The copper-phosphorus alloy comprises the following components in the indicated mass percentages: Cu 75%-85%, P 10%-15%, Al 2%-5%, Ti 1%-3%, rare earth elements 0.1%-0.5%, and the remainder being Fe; the rare earth elements are one or more combinations of cerium, lanthanum, and dysprosium. The preparation method includes batching, smelting, preliminary cooling, casting and rolling, rapid cooling, heat treatment, machining, and surface treatment. The copper-phosphorus alloy of this invention achieves high performance through grain optimization and is suitable for industrial applications requiring high strength, high hardness, and good plasticity and toughness.

This invention relates to the field of tobacco machinery processing technology, and provides a packaging edge cutting system for cigarette tipping paper winding. The winding machine body is equipped with packaging paper, and an edge cutting adjustment roller is installed on one side of the winding machine body. An edge cutting blade holder is movably mounted on the edge cutting adjustment roller. An upper blade sleeve is rotatably mounted inside the edge cutting blade holder, and an upper blade body is fixedly connected to the outside of the upper blade sleeve. A lower blade sleeve is rotatably mounted on the outer wall of the edge cutting blade holder, and a lower blade body is fixedly connected to the outside of the lower blade sleeve. The upper and lower blade sleeves are rotatably connected to the outside of the edge cutting blade holder in a spliced ​​manner. With the assistance of a quick-change structure consisting of an installation rod, a limiting rod, and a double spring assembly, the system can quickly release the blade sleeve locking state by pressing the limiting rod to retract after the machine stops, achieving tool-free disassembly and assembly of the blade assembly.

The application discloses a kind of automatically slitting inductance protection bearing tape preparation equipment and preparation method thereof, comprising: conveying table, heat pressing device, cutting device and cooling device are sequentially arranged in conveying table two sides from left to right;Including the following steps: S1, accurate positioning is carried out to bearing tape by positioning structure and position is corrected;S2, bearing tape is contacted with heater by positioning pressing plate and is pressed down, and the edge of bearing tape is softened;S3, the both sides of bearing tape are cut simultaneously by blade;S4, bearing tape is rapidly frozen and cooled by liquid nitrogen injection part, and then the bearing tape piece is blown to the blanking transmission part by air injection part, and the blanking of single bearing tape piece is completed.The application effectively solves the problem of curling caused by uneven stress distribution by combining heating treatment, arc cutting and air blowing blanking, improves production efficiency, improves product quality and stability, reduces manual operation and error, and reduces production cost.

The invention is suitable for the technical field of diamond single crystal preparation, and provides a preparation method of an ellipsoidal large-size diamond single crystal, which comprises the following steps: using a large-size diamond single crystal with clear edges as a crystal; placing in a high-pressure assembly block, and drying; the high-pressure assembly block is placed in a cavity of a cubic press device, corrosion operation is carried out, the pressure is 3-6 GPa, the temperature is 1200-2000 DEG C, and the time is 5 min to 48 h; and after finishing, taking out the crystal, removing impurities on the surface, and cleaning to obtain the ellipsoidal large-size diamond single crystal. According to the method, the large-size diamond buried in the metal catalyst is treated through cubic high-pressure equipment, the preparation of diamond single crystals with different sizes from edge-corner clear crystals to slightly round to sphere-like shapes to ellipsoidal shapes can be realized by regulating and controlling the temperature and the heat preservation time, and the method is simple and easy to operate; the technical problem of large-size ellipsoidal diamond single crystal preparation is solved, the production cost is low, good repeatability is achieved, and the requirement for batch production can be met.

The present invention relates to PCB board raw material processing equipment, and relates to a film tearing device for PCB board processing, comprising: a base, on which a feeding area, an intermediate film tearing area and a terminal unloading area are arranged in sequence; the intermediate film tearing area comprises: a collecting ring, fixedly installed in the middle of the base; a containing shell, installed in the middle of the base inside the collecting ring; a bionic claw, arranged at the upper part of the containing shell; a plurality of elastic tentacles are arranged on the bionic claw at intervals; a clamping mechanism is installed on the base close to the containing shell to clamp the torn film material. The present invention uses an adsorption plate to carry the material, and in the process of moving, the top angle of the material and the bionic claw are in frictional contact, and the terminal contact parts of the plurality of elastic tentacles arranged on the bionic claw can effectively lift up the protective film on the material, and then the film is torn off through the clamping mechanism, and the film tearing process is simple and effective and not easy to damage the material.