38results about How to "Good expansion performance" patented technology

The utility model belongs to the technical field of air box type bag type dust collectors, and particularly relates to a dust filtering bag component of a bag type dust collector, which comprises a shaft rod, a plurality of supports are uniformly distributed and fixedly connected on the shaft rod, a support rod is fixedly connected on each support leg of the supports, a dust filtering bag with a star-shaped section is sleeved on the outer side of the support rod, and the dust filtering bag is connected with the air box type bag type dust collector. The dust filter has the advantages that the surface area of the dust filter bag is effectively increased by arranging the star-shaped dust filter bag, the filter efficiency is improved, the expansion effect of the star-shaped dust filter bag is better, the vibration dust removal effect is better, the cleaning effect can be effectively improved to ensure the filter efficiency of the dust filter bag, and the elastic rope is utilized to make the dust filter more stable. Therefore, the original working efficiency and working state of the dust filtering bag are kept, the repeated maintenance frequency of personnel is avoided, the maintenance cost is reduced, the service life is prolonged, and the dust filtering bag has higher practicability.

The invention discloses a stable curing material of high-expansibility heavy metal polluted clay and a preparation method of the stable curing material, belongs to the technical field of engineering materials and environmental engineering, and is used for solving the technical problems that in the prior art, all curing components in the stable curing material are poor in binding property and poor in adsorbability to polluted heavy metal elements. The preparation method comprises the following steps: synthesizing an intermediate A from composite carbide slag pellets, a modified adhesive, an alkaline excitation material, dead burned magnesium oxide, metakaolin, polyvinyl alcohol, chlorocyclopropane and methyltrimethoxysilane, reacting allyl bromide with methyl trichlorosilane to obtain allyl chlorosilane, reacting the intermediate A with allyl chlorosilane to obtain the modified calcium carbide slag pellets. The modified adhesive with high viscosity and strong adsorbability is obtained, the fly ash, the modifier and the carbide slag are mixed, and high-strength and high-stability composite carbide slag pellets are obtained through spheroidizing treatment and high-temperature calcination, so that the prepared stable curing material has the advantages of being excellent in adsorption curing performance and good in overall stability.

The invention discloses a rapidly-formed bentonite-based blocking and controlling material and a preparation method thereof, the rapidly-formed bentonite-based blocking and controlling material is prepared from the following raw materials: bentonite, fly ash, blast furnace slag and an exciting agent, the mass ratio of the bentonite to the fly ash is 1: 0.2-0.4, based on the total mass of the bentonite and the fly ash, the adding amount of the blast furnace slag is 10-20%, the adding amount of the exciting agent is 10-20%, and the adding amount of the exciting agent is 10-20%. And the addition amount of the exciting agent is 13.33 to 16.69 percent. The preparation method comprises the following steps: dissolving water glass and sodium hydroxide in water, adding a modifier to prepare an exciting agent, adding the exciting agent into a dry powder sample formed by mixing fly ash and blast furnace slag, stirring, covering, adding bentonite, and stirring for forming. The water glass, the phosphate and the like are used as exciting agents, the industrial solid waste is used as an admixture for supplementing required elements such as calcium, silicon and aluminum, the obtained blocking and controlling material is good in compressive strength and chemical compatibility, the rapid blocking and controlling function can be achieved, and the permeability of the blocking and controlling material after 7 days of maintenance is two orders of magnitude lower than that required by the national standard.

The invention discloses a fireproof blanket and a preparation method thereof, and relates to the technical field of fireproof materials. A fireproof blanket comprises a first flame-retardant fiber blanket layer and a second flame-retardant fiber blanket layer which are respectively adhered to two surfaces of a self-adhesive fireproof layer. Both the first flame-retardant fiber blanket layer and the second flame-retardant fiber blanket layer can be silica cloth, basalt fiber cloth, aramid fiber cloth, carbon fiber cloth, acrylic fiber cloth, pre-oxidized fiber cloth or silicon titanium cloth. The self-adhesive fireproof layer is prepared from the following components in parts by mass: 10-40 parts of a polymer matrix; 15-30 parts of a plasticizer; 3-20 parts of an intumescent filler; 15-30 parts of a flame-retardant filler; 15 to 40 parts of ceramic filler; and 2-10 parts of a reinforcing filler. The fiber blanket layer is made of high-temperature-resistant healthy cloth, and after the cloth is bonded to the two faces of the self-adhesive fireproof layer, the burnthrough resistance of the obtained fireproof blanket is further improved, the fireproof blanket can resist combustion of flames at the temperature of 1300-1500 DEG C and has good expansibility, and therefore the good heat insulation effect is achieved.

The invention relates to a lithium slag-based temperature-inhibiting anti-cracking waterproof agent and a preparation method thereof, and belongs to the technical field of building materials such as cement and concrete. The lithium slag-based temperature-inhibiting anti-cracking waterproof agent comprises the following components in percentage by mass: 40%-50% of modified lithium slag, 18%-30% of a calcium ion compensating agent, 9%-19% of a complexing agent, 10%-23% of a precipitation component, 1%-4% of silicone zirconium and 3%-7% of temperature change induction fibers, wherein the total mass of the raw materials is 100%; the preparation method comprises the following steps: weighing the raw material components according to the mass fraction, and uniformly mixing to obtain the lithium slag-based temperature-inhibiting anti-cracking waterproof agent. The lithium slag-based temperature-inhibiting anti-cracking waterproof agent can be used for specifically reducing concrete shrinkage cracks, reducing the internal temperature rise of the concrete and realizing crack self-repairing in the service stage of the concrete.

The invention discloses a modified calcium oxide expansive grouting material, the raw materials of which include: cement, calcium oxide expansive agent, water-based polyurethane, early strength agent, defoamer, water reducer and water; the mass ratio of cement, calcium oxide expansive agent, water-based polyurethane, early strength agent, defoamer, water reducer and water is 1000:30-90:8-12:50-70:2-4:10-14:500. The raw materials also include: limestone, silica powder, fly ash, sodium alginate, graphene oxide, microbial preparation, urea, calcium lactate; the mass ratio of limestone, silica powder, fly ash, sodium alginate, graphene oxide, microbial preparation, urea, calcium lactate and cement is 20-40:1-3:5-15:1-2:1-3:1-2:1-3:1-2:1000. The invention also discloses a preparation method and application of the modified calcium oxide expansive grouting material.

The present invention provides a negative electrode active layer, a double negative electrode active layer, a negative electrode plate and a lithium ion battery. The negative electrode active layer includes a carbon-modified lithium metasilicate binder, and the content of the carbon-modified lithium metasilicate binder is 2.4% to 3.2% based on the total weight of the negative electrode active layer as 100%. The negative electrode active layer of a lithium ion battery provided by the present invention, which includes carbon-modified lithium metasilicate, can be used as a binder to construct a cross-linked network in the negative electrode active layer, improve the internal resistance, adhesion, liquid absorption capacity, expansion and ion conductivity of the negative electrode plate, and finally obtain a lithium ion battery that can simultaneously take into account high rate performance, low internal resistance and long cycle.

The invention relates to a preparation process of a composite core body, which comprises the steps of first absorption layer forming, primary glue spraying, second core body forming, secondary glue spraying, second absorption layer forming and core body main body forming, the middle part of the top of the second core body is fixed only through a dotted second glue spraying part, and the two sides of the top of the second core body are not fixed by glue. When the top of the second core body absorbs a large amount of urine, the second core body can expand, and the flow guide groove provides enough expansion space for the second glue spraying part, so that the stripping force of the absorption core body is large, and the liquid absorption space of the second core body can be instantly increased; the first glue spraying part adopts the point-shaped first glue spraying points, so that the bottom of the second core body can expand after absorbing water, the whole second core body has a good expansion effect, the water locking and water absorbing capacity of the second core body is greatly improved, and the technical problems that the expansion space of the core body is limited, and the flow guiding and liquid absorbing effects are poor are solved.

The invention relates to the technical field of petroleum exploration and development, and discloses a profile control particle and a preparation method and application thereof, the profile control particle comprises a copolymer and inorganic metal ions complexed on the copolymer, the copolymer comprises a first structural unit provided by a skeleton monomer, a second structural unit provided by a charged monomer and a third structural unit provided by a complexing monomer, and the inorganic metal ions are zirconium ions; the profile control particle has slow expansibility and high mechanical strength, and can realize deep profile control of a reservoir in an oil reservoir.

The invention discloses an anti-scouring tundish dry material, and relates to the technical field of tundish refractory materials, and the tundish dry material comprises the following raw material components by mass: 28-32% of 3-1mm fused magnesite, 10-20% of alumina powder, 10-20% of alumina powder, and the balance of alumina powder. The invention relates to an ultra-low thermal conductivity refractory brick which comprises the following components in percentage by weight: 22-30% of 1-0mm fused magnesia, 20-28% of 200-mesh fused magnesia, 3-4.5% of phenolic resin, 1-1.4% of rectorite powder, 0.2-0.3% of SiO2 aerogel powder and the balance of 5-3mm fused magnesia. According to the ultra-low thermal conductivity refractory brick, the special layered structure of the rectorite powder and the ultra-low thermal conductivity of the SiO2 aerogel powder are ingeniously utilized; through the synergistic effect of the two components, the tundish dry material successfully solves the problems of insufficient strength and poor thermal insulation performance on the basis of keeping the original good fire resistance, and the efficiency and economical efficiency of a continuous casting process are remarkably improved.

The utility model belongs to the technical field of cooling liquid conveying, and particularly relates to a large-diameter nylon pipe with a cooling liquid conveying function, which comprises a nylon pipe main body, a nylon pipe joint, a double-sealing-ring mechanism and a metal buckle, the nylon pipe main body is detachably connected with the nylon pipe joint, and the nylon pipe main body comprises a main body pipeline and a main body joint; the main body pipeline is fixedly connected with the main body connector, a buckling groove is formed in the side face of the main body connector, the nylon pipe connector comprises a pipe connector body, a first sealing groove and a second sealing groove are formed in the side face of the pipe connector body, and a threaded hole is formed in the side face of the pipe connector body. The first sealing ring and the second sealing ring are attached to the inner side face of the body connector, and the metal buckle penetrates through the buckle groove to be in threaded connection with the threaded hole. Compared with the prior art, the utility model has the advantages and positive effects that the metal buckle is simple in structure and easy to mount and dismount, and the double-sealing-ring mechanism is good in sealing performance.

The present application provides an electrochemical device and an electronic device, including a positive electrode plate, a negative electrode plate and an electrolyte, the negative electrode plate includes a negative electrode current collector and a negative electrode material layer, the negative electrode material layer includes a silicon-based composite material, the silicon-based composite material includes silicon-based particles, the strength of the negative electrode current collector is A MPa, the difference between the maximum and minimum values ​​of the relative percentage content of silicon atoms in the silicon-based particles is B%, the mass content of silicon elements in the negative electrode material layer is C%, and the following conditions are met: The present application meets the above conditions by synergistically adjusting A, B, and C, and the obtained lithium-ion battery has good cycle performance and expansion performance.

The invention particularly relates to a data synchronization method and system based on Rocket MQ. According to the data synchronization method and system based on the Rocket MQ, the state of a Rocket MQ cluster is monitored, and monitored ground state information is recorded into a cluster state table; the method comprises the following steps: after a consumer program receives a main data change message, firstly writing the message into a cache table checkdatatable, and adding a checkstatus field for each message to identify whether the message is successfully processed or not, the initial value being "unprocessed"; under the control of the transaction, the consumer program updates the data in the business library; and after the business library is successfully updated, updating a checkstatus field of a corresponding message in the checkdatatable to be'processed ', submitting the offset of the Rocket MQ, and confirming that the message is processed. The data synchronization method and system based on the Rocket MQ are high in expansibility, capable of ensuring that data changes are reflected to all service systems in real time, capable of reducing delay, high in fault-tolerant capability, simpler and more efficient in fault recovery process and capable of remarkably improving the real-time performance and accuracy of synchronization of main data changes.

The invention discloses a gas energy underwater rock breaking construction method, and belongs to the technical field of underwater rock breaking. The method comprises the steps that 1, a drilling ship is used for drilling and positioning at a construction site, and a plurality of holes are machined; 2, a pipe sleeve is placed in each hole drilled in the step 1; 3, a fracturing pipe is installed in the pipe sleeve; step 4, plugging the hole in which the fracturing pipe is mounted by using an underwater plugging device; and 5, the rock breaking network is connected, and the fracturing pipe is stimulated to complete rock breaking. The carbon dioxide gas rock breaking fracturing pipe solves the problem that a carbon dioxide gas rock breaking fracturing pipe in the prior art has the risk of early explosion, cracks generated on underwater rock are large, the rock breaking effect is good, and the fracturing pipe can be rapidly and properly placed and plugged in deep water.

According to the tundish permanent lining repairing method, the permanent lining is repaired in a sleeve pouring mode, and in the construction process, the combination between the newly poured permanent lining and the residual lining is increased in the mode that a groove is formed in the surface of the residual lining of the permanent lining and the residual lining is coated with a silica sol binding agent. Silica micropowder, alumina micropowder, mullite micropowder and a high-efficiency water reducing agent are adopted in the bush casting castable combination, so that the water adding amount for construction is reduced, the construction performance is improved, the expansion rate of the bush casting castable after high-temperature burning is increased, the combination degree of a newly-cast permanent lining and a residual lining after bush casting is further improved, and the service life of the bush casting castable is prolonged. And the obtained new casting permanent lining has relatively high density and strength. Through pouring and repairing, the newly-poured permanent lining of the tundish, which is well combined with the residual lining, is formed, so that the residual lining is effectively utilized, the consumption of the castable is greatly reduced, and the service life of the permanent lining is also greatly prolonged. And meanwhile, anchoring parts and heat insulation plates required in the pouring process of the tundish permanent lining are saved.

The utility model discloses an efficient buffering D-shaped rubber fender and relates to the field of rubber fenders, the efficient buffering D-shaped rubber fender comprises a bottom plate, a fender body is arranged at the top of the bottom plate, mounting frames are fixedly connected to the two sides of the bottom plate, mounting blocks are fixedly connected to the two sides of the front side and the rear side of the bottom plate, and the surfaces of the mounting blocks are fixedly connected with the fender body. A telescopic sleeve is fixedly connected between the top and the bottom of an inner cavity of the fender body, the surface of the telescopic sleeve is sleeved with a buffer spring, the fender body comprises a base layer, and an anti-collision buffer layer is fixedly connected to the surface of the base layer. By arranging the bottom plate, the fender body, the mounting frame, the mounting block, the telescopic sleeve, the buffer spring, the base layer, the anti-collision buffer layer, the wear-resistant layer, the fiber reinforcing layer, the first anti-corrosion layer and the second anti-corrosion layer, the fender body can have efficient buffer performance, a ship is prevented from being damaged, meanwhile, the fender body has good corrosion resistance, and the service life of the ship is prolonged. The service life is prolonged.

The invention provides a silicon-based material, an electrochemical device and electronic equipment, the silicon-based material comprises a silicon-carbon material and a silica material, and the average particle size D150 of the silicon-carbon material and the average particle size D250 of the silica material meet the following conditions: 1.8 lt; d < 150 > / D < 250 lt >; 10, and D150 is 4 [mu] m to 10 [mu] m. The negative electrode material provided by the invention can reduce the volume expansion of the electrochemical device after circulation, and improve the volume energy density and cycle performance of the electrochemical device.

The invention provides a green preparation process of tapioca sour starch with baking expansibility, and relates to the technical field of food preparation, the process comprises the following steps: (1) preparation of tapioca native starch, (2) fermentation and ultraviolet irradiation, and (3) drying. After the cassava raw starch is prepared, the cassava raw starch is subjected to denaturation treatment in a manner of combining fermentation with ultraviolet radiation, and then the drying process is combined, so that the finally obtained cassava sour starch has the characteristic of good baking expansibility.

The application belongs to the technical field of lithium batteries, and relates to a preparation method of a double-coated silicon-carbon composite material, an electrode and a lithium battery.The method comprises the following steps: placing a lithium dopant and a MOF material in a first organic solvent, adding a template agent and a catalyst, reacting, filtering, freeze-drying and obtaining a gel composite; in an inert atmosphere, the gel composite is heated to a first preset temperature, carbon dioxide is introduced at a preset flow rate, the temperature is lowered, the gel composite is soaked in mixed acid, pickling is performed, vacuum drying is performed, and a porous carbon composite material is obtained; liquid silane, a phosphine derivative, a dispersing agent, the porous carbon composite material and a silane coupling agent are added to a second organic solvent, spray drying is performed, primary carbonization is performed, and a silicon-carbon precursor material is obtained; resin is dissolved in a third organic solvent, a fast ion conductor and the silicon-carbon precursor material are added, secondary carbonization is performed, the temperature is lowered to a second preset temperature, a reducing gas is introduced, and a double-coated silicon-carbon composite material is obtained; the conductivity is improved, the interface stability is improved, and the full charge swelling is reduced.

The invention provides acid-resistant gel as well as a preparation method and application thereof. In order to solve the problems that the traditional weight-reducing medicine and the existing weight-reducing equipment permanently injure the body and endanger life health, and most of hydrogel cannot meet the acid tolerance and high expansion rate, the invention provides the edible acid-resistant gel with high expansion rate. The acid-resistant gel is composed of a core-shell structure, firstly, ionic cross-linking is carried out through electrostatic interaction to form a'core 'of an inner layer, and then secondary cross-linking is carried out outside to form a'shell'. The acid-resistant gel disclosed by the invention has the function of stably expanding in an acid environment on the premise of meeting the requirements of biocompatibility and biodegradability, can be used as a new material for replacing medicines and implantation equipment, and has a wide prospect.

The utility model relates to the technical field of collecting pipe depressurization, and discloses a depressurization structure of a condenser collecting pipe, which comprises a collecting pipe main body, the outer part of the collecting pipe main body is uniformly connected with shunt pipes, one end of the collecting pipe main body is sleeved with a connecting sleeve, and the connecting sleeve and the collecting pipe main body are mutually welded; and a pressure relief head is mounted at one end of the connecting sleeve. Through cooperation of the spring, the movable sleeve plate, the pressure relief head and the like, high-pressure liquid impact in the collecting pipe body can flow into the pressure relief head through the pressure reduction channel by utilizing the mobility of the pressure reduction piston under high-pressure impact, so that communication is generated between the pressure relief head and the collecting pipe body to balance pressure, and the pressure relief effect is improved. The purpose of depressurizing the interior of the collecting pipe body is achieved, and by means of the effect of the one-way circulation pipe, after the depressurizing piston is reset, liquid temporarily stored in the pressure relief head can flow back into the collecting pipe body again.

The utility model discloses a deep-sea camera, which comprises a camera shell, one side of the camera shell is connected with a base, the inner wall of the base is provided with a storage battery and connected through a buckle, the side surface of the storage battery is provided with a camera body, the other side of the camera body is provided with a lighting mechanism, and two sides of the inner wall of the camera shell are provided with stabilizing mechanisms. Transparent protective glass is installed at one end of the camera shell, and a locking mechanism is arranged at the joint of the camera shell and the transparent protective glass. The utility model has the advantages of compression resistance, water resistance and capability of providing camera lighting.

The utility model discloses a battery cell depression bar for a battery module, which relates to the technical field of battery cell depression bars and comprises a depression bar frame with a rectangular structure, a bottom plate tightly attached to the battery module is arranged at the lower end of the depression bar frame, the depression bar frame and the bottom plate are enclosed to form a wire harness accommodating chamber, and a wire inlet communicated with the wire harness accommodating chamber is arranged on the depression bar frame. A wire arranging window is further formed in the upper end of the pressing strip frame, and after the wire harness enters the wire harness containing cavity from the wire inlet, an operator arranges the wire harness through the wire arranging window; and a wire harness pressing plate is arranged on the bottom plate and can be deformed to press the wire harness. The wiring harness pressing plate is used for pressing the wiring harness, so that the arrangement of the battery core wiring harness is completed simply and quickly, the wiring harness can be stored in order without spending too much time, the efficiency is improved, the cost is reduced, the production requirement is met, and the bottom sheet and the pressing strip frame are fixedly connected through a welding process, so that a closed structure is integrally enclosed. And the overall strength of the battery cell pressing strip can be greatly improved.

The invention discloses equipment artillery barrel bore damage detection equipment, and relates to the field of artillery maintenance, the equipment artillery barrel bore damage detection equipment comprises an artillery barrel main body, and a detection assembly and a maintenance assembly are arranged in the front of the interior of the artillery barrel main body; the detection assembly comprises an air cylinder, the air cylinder is located in the front of the interior of the gun barrel body, high-pressure gas serves as driving force of the detection assembly, the detection assembly stably moves in the middle of the interior of the gun barrel body, and damage detection is conducted on the inner wall of the gun barrel body through the optical detection technology. The maintenance assembly comprises a transmission frame, the transmission frame is arranged on the surface of the air cylinder in a sleeving mode, a calibration block drives the optical detection assembly to be located in the middle of the interior of the gun barrel body and move deep, and the gun core is accurately and automatically calibrated, so that when the optical detection assembly conducts detection work, the distances between the optical detection assembly and the inner walls of all the positions of the gun barrel body are the same; and the position state cannot be changed in the detection process, so that infrared rays released by the optical detection assembly are uniformly in contact with the inner wall of the gun barrel main body and rebound.

The invention discloses a flame retardant material as well as a preparation method and application thereof, the preparation method of the flame retardant material comprises the following steps: S1, carrying out Michael addition reaction on a compound A containing vinyl and ester groups and a compound B containing at least three amino groups to obtain an intermediate; s2, carrying out amine ester exchange reaction on the intermediate to obtain hyperbranched polyamide; and S3, mixing the hyperbranched polyamide, phytic acid and an amino-containing silane coupling agent for reaction, and then reacting with water to obtain the flame retardant material. The flame retardant material prepared by the preparation method disclosed by the invention is halogen-free and environment-friendly, has excellent thermal stability and expansion performance, is small in addition amount in TPU (Thermoplastic Polyurethane) and good in flame-retardant effect, has relatively good dispersity and compatibility in a TPU material, improves the melt index and the flame-retardant effect of the TPU material on the premise of not damaging the mechanical property of the TPU material when being added into the TPU material, and has good application prospects. And the processability is improved.

The invention relates to a lithium secondary battery, a battery pack, and an electronic device including the same. The lithium secondary battery includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; a separator between the positive electrode and the negative electrode; and an electrolyte, in which the positive electrode active material contains a lithium transition metal compound containing nickel, cobalt, and manganese, in which the lithium transition metal compound contains a single particle form having at least one of a single primary particle or an agglomerate of two or more and 30 or less primary particles, wherein the single particles contain therein crystal grains of the lithium transition metal compound, and wherein the negative electrode active material contains a silicon-carbon composite material having therein Si crystal grains, and wherein the size of the Si crystal grains of the silicon-carbon composite material is 10% or less of the size of the crystal grains of the lithium transition metal compound.

The invention relates to the technical field of aerogel materials, and particularly discloses compressible expansion aerogel as well as a preparation method and application thereof. Water-soluble polymer sodium carboxymethyl cellulose and needle paper pulp with high strength and modulus are used as raw materials, hydrogen bonds and covalent bonds are constructed by adding a cross-linking agent, so that sodium carboxymethyl cellulose and needle paper pulp fibers are fully cross-linked, and aerogel forms a three-dimensional porous structure by using a method of combining a foaming agent and an ice template method. The prepared aerogel material can be compressed to 2.5%-10% of the original volume, can rapidly expand to 95%-100% of the original volume within 20s when meeting water after being compressed, has the liquid absorption rate of greater than or equal to 20g / g, has high overall strength and toughness, does not use toxic organic solvents in the preparation process, is biodegradable, is low in cost, is suitable for large-scale production, and has wide application prospects. Wide application prospects are realized in the field of hemostatic materials.

The present invention relates to the technical field of rubber pads, and in particular to a vehicle rubber pad with expansion shock absorption, including a bottom plate, the bottom plate is made of polytetrafluoroethylene to ensure the stability of the rubber pad, the buffer layer made of natural latex has high elasticity, and the rubber film has excellent flex resistance, shock resistance and creep resistance, and can effectively absorb energy, and the sealing ring made of butyl rubber generates heat through the mutual friction of metal particles during vibration, and heats the hydrogen in the hydrogen tank through the sealing ring, thereby achieving the effect of expansion, and can effectively suppress the problem that the material rubber pad cannot withstand due to excessive vibration intensity, and the telescopic mechanism increases the friction coefficient between the engine and the rubber pad through the telescopic block while increasing the buffering effect, and the silencer hole can effectively reduce the diffusion of sound. The present invention has a simple structure, effectively increases the buffering effect, and is suitable for promotion.

The invention relates to a low-GI milk-based dietary fiber steamed bun and a preparation method thereof. The preparation method comprises the following steps: adding water into flour, milk powder and yeast, mixing to obtain dough, performing primary fermentation, adding dietary alkali into the fermented dough, and uniformly kneading to obtain alkali-added dough; mixing the dietary fiber powder with a compound enzyme preparation to prepare a dietary fiber mass; mixing and uniformly kneading the alkali-added dough and the dietary fiber dough, carrying out secondary fermentation, and steaming to obtain the low-GI milk-based dietary fiber steamed bun. Wherein the compound enzyme preparation is a mixture of cellulase, hemicellulase and alpha-amylase. The low-GI milk-based dietary fiber steamed bun prepared by the preparation method disclosed by the invention not only has a relatively low GI value, but also enhances the stability and elasticity of a gluten network by adding the milk powder, so that the steamed bun is softer and rich in elasticity.

The invention relates to a biochar compound and a method for reducing the influence of soil film residue on crops, the biochar compound comprises the following components by weight: 10-15% of bentonite, 3-5% of polyacrylamide, 0.1-0.2% of EPS, 3-5% of a yeast extract, 0.5-1% of a pine extract, 0.1-0.3% of a mint extract, 0.01-0.03% of iron oxide, 0.01-0.03% of molybdenum disulfide, and the balance of water. And the balance of charcoal. By adopting the combination of the porous material, the thallus enrichment material, the residual film decomposition aid and the slow-release material, on one hand, the permeability of soil containing the residual film can be effectively improved, and the influence of the residual film on crop growth is reduced; on the other hand, degradation of the residual film can be effectively promoted, and then the content of the residual film in the soil is reduced.