51results about How to "Achieve decentralization" patented technology

The invention relates to the technical field of photovoltaic adhesive films, and discloses an anti-radiation photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The adhesive film is of a multi-layer co-extrusion composite structure formed by co-extrusion molding and irradiation, and comprises an upper surface layer, a middle functional layer and a lower surface layer, the upper surface layer is a radiation-resistant polymer matrix (such as EVA-g-St, EVA-g-(alpha-MeSt), POE-g-St and an EVA / POE-aromatic resin blend); the middle functional layer comprises a packaging resin matrix, an anti-radiation agent (which is a nano-scale radiation protection material such as a rare earth oxide, a heavy metal oxide, a boron-containing compound and a polymer derivative of a benzotriazole type ultraviolet absorbent) and a stabilizer; and the lower surface layer is a bonding surface layer formed by light-transmitting bonding resin. The adhesive film is good in radiation resistance, the light transmittance, the cohesiveness, the elongation at break retention rate, the yellowing resistance, the power attenuation resistance of a component and the like after accelerated radiation are obviously improved, and the service life of the component under strong radiation can be prolonged.

The invention relates to the technical field of fluidized bed drying, in particular to an improved fluidized bed dryer and a drying process. The drying machine comprises a material bed and a transverse moving mechanism; the bottom of the material bed is connected with a vibration source and can ventilate and dry upwards from the bottom; the transverse moving mechanism comprises a driving part assembled at the bottom of the material bed and a plurality of transverse moving beams distributed in the conveying direction of the material bed, and the transverse moving beams are slidably installed on the material bed in the width direction of the material bed. The driving piece is used for intermittently and synchronously driving the plurality of transverse moving beams and driving the adjacent transverse moving beams to reversely slide in a reciprocating manner; a plurality of first brushes and a plurality of second brushes are detachably installed on each transverse moving beam in the length direction of the transverse moving beam. Through various auxiliary drying treatments on materials and cleaning of the bed surface, the drying uniformity and sufficiency of material finished products are guaranteed, the uniformity of material particle sizes is improved, the quality of the dried material finished products is guaranteed, and follow-up stable storage is facilitated.

The invention relates to the technical field of block chains, and discloses a block chain data encryption query method, device, equipment and medium, the method comprises the following steps: extracting data content information of to-be-chained data, using a homomorphic encryption algorithm to encrypt the data content information to obtain ciphertext content information; taking the ciphertext content information and the corresponding ciphertext hash value as on-chain evidence storage data to be stored in a block chain in a chaining manner; performing association mapping on the on-chain evidence storage data and the ciphertext access rule through the smart contract to generate an authority association rule corresponding to the on-chain evidence storage data; performing permission verification on the access permission in the data query request based on a permission association rule; after the permission verification is passed, querying the on-chain evidence storage data in a homomorphic encryption state according to the data query request to obtain an encrypted query result; and decrypting the encrypted query result to obtain target plaintext query data. The reliability of data encryption query can be improved.

The invention discloses a lifting hook control method and a lifting device. Before a lifting hook is lowered, whether the pulling force of the lifting hook on a pull rope is larger than the self weight of the pull rope or not is judged; when the pulling force of the lifting hook to the pull rope is not greater than the self weight of the pull rope, the lifting hook cannot be lowered by virtue of the self weight, and at the moment, the friction wheel winch is controlled to drive the friction wheel group to release the pull rope and the winch is controlled to release the pull rope, so that the load of the pull rope between the winch and the friction wheel winch can act on the friction wheel winch; the load transmitted to the rope outlet end of the friction wheel set after the pull rope passes through the friction wheel set is attenuated, so that the dead weight of the pull rope between the friction wheel set and the lifting hook is smaller than the pulling force of the lifting hook on the pull rope, the lifting hook can pull the pull rope through the dead weight, the winch releases the pull rope according to the preset speed, and then the lifting hook is lowered.

The utility model belongs to the technical field of automobile brake equipment, concretely relates to a flange plate brake structure, including combination disc and the friction piece and brake caliper of setting on combination disc, combination disc includes first brake disc, second brake disc and circumferential connecting block, the circumferential connecting block is set as multiple blocks, and is fixed between first brake disc and second brake disc, first brake disc and second brake disc concentricity arrangement, multiple the circumferential connecting block is first brake disc or second brake disc as the center of circle and presents the circular distribution. The utility model discloses the cooperation structure of combination disc and friction piece, when brake caliper action, can make first half friction ring and second half friction ring on friction piece alternate and brake pad contact, realize the heat dispersion when continuous braking, again with the cooperation of rotating circumferential connecting block guarantee first brake disc and second brake disc heat conduction to first half friction ring and second half friction ring, reduce the heat saturation effect, keep stable brake effect.

The present application relates to a kind of borehole type static sounding device, it includes hydraulic power device, photoelectric separation cabin, suspension device, valve cabin, collection battery cabin, penetration propulsion device and probe in turn from top to bottom connection;Wherein, hydraulic power device is connected with external electricity by bearing cable interface, photoelectric separation cabin is connected with suspension device by axial positioning elastic card mechanism, suspension device is set in the middle position of borehole type static sounding device, hydraulic power device and collection battery cabin, penetration propulsion device are set to be located in the two sides of suspension device.The borehole type static sounding device of the present application can improve its stability when measuring, improve measurement accuracy.

This invention relates to the field of cable protection conduit technology, specifically a flame-retardant and impact-resistant protective conduit for communication and power cables. The conduit includes a flame-retardant structure comprising an outer tube layer, the inner wall of which is fitted with a heat-resistant outer tube. An impact-resistant protective structure is provided on the inner wall of the inner mounting layer, including a cable mounting bracket outer tube located on the inner wall of the inner mounting layer. One end of the outer tube layer has a conduit interface structure. This flame-retardant and impact-resistant protective conduit for communication and power cables exhibits significant flame-retardant effects, effectively preventing flame spread, avoiding pipe combustion and dripping, and effectively absorbing impacts from external collisions and compression. It can withstand various external impacts such as outdoor construction, vehicle collisions, and heavy object compression. Furthermore, it improves splicing and connection efficiency, is suitable for large-scale cable laying projects, and can significantly shorten the construction cycle.

The invention discloses a prepreg tape interlayer modification and enhancement method for automatic fiber laying, and belongs to the technical field of automatic fiber laying. The prepreg tape interlayer modification and enhancement method comprises the steps of online thermal softening, plasma thermal excitation nanometer material dispersion, hot air flow auxiliary deposition and air cooling solidification. Uniform and stable deposition of uniformly dispersed nano materials on the surface of the prepreg tape is realized, and a'physical interlocking 'modified enhanced interface is constructed, so that the interlayer bonding strength of the prepreg tape is improved. The problems that in the background technology, conventional nano modification is prone to particle aggregation, uneven in dispersion and difficult to embed, and an existing modification technology is incompatible with the online high-speed production process of automatic fiber laying are solved.

The application provides a residential energy system optimal control method based on data safe transmission, comprising: establishing a residential energy system model; obtaining electricity price, residential load and total cost function at each moment; taking minimizing the value of the total cost function as a target, iteratively optimizing the residential energy control sub-model to obtain an optimal residential energy control strategy; controlling and scheduling the residential energy according to the optimal residential energy control strategy; in the scheduling process, storing the optimal control data into a corresponding database in the blockchain after encryption; a queryer queries the data of each database in the blockchain through a proxy re-encryption mechanism and calculates in a secure multi-party calculation mode; the application can effectively perform optimal control on the residential energy; in addition, the application also introduces the blockchain technology, realizes safe encryption collection, transmission and interaction of the decentralized, tamper-proof, controllable and traceable residential energy optimal control data.

The utility model relates to the point gum equipment technical field, concretely is a kind of glue liquid heat delivery device for point gum machine, including outer sleeve tube, glue pipe and shunt, the outer sleeve tube inside is provided with glue pipe, the outer sleeve tube outside upper end is welded with the shunt of circular array distribution, the glue pipe outer wall is adhesively fixed with the blade of circular array distribution, the glue liquid in the glue pipe inside can be heat preservation, and auxiliary heat conduction is carried out through heat conduction fin, further ensure the heat preservation effect to glue liquid, avoid the heat loss of glue liquid, ensure the fluidity of glue liquid, guarantee the glue flow of glue liquid.

The present application relates to the technical field of silicone rubber material, in particular to a sericite modified silicone rubber material and a preparation method thereof.The present application overcomes the problems of poor dispersion of sericite in the organic silicon matrix and poor compatibility of fluorosilicon and common silicon.The silicone rubber material is prepared from polysiloxane hybrid base glue prepared by in-situ polymerization of fluorine-containing / ethenyl double modified sericite, fluorosilicon raw rubber, methylphenylvinyl silicone rubber, MQ silicone resin, hydrogen-containing silicone oil and vulcanizing agent;the preparation process involves double functional group grafting on the surface of sericite, monomer in-situ ring-opening polymerization coating, multiphase blending to build interpenetrating network and hydrogen-containing silicone oil chain extension to cooperate with gradient vulcanization, through building a rigid-flexible stereo enhanced network, the material is endowed with excellent oil resistance, heat resistance and high mechanical strength, and can be used in the field of automobile manufacturing.

The invention discloses a miniaturized heating cigarette smoking set capable of reducing the surface temperature. Comprising a heating cavity used for containing an aerosol generating substance, a heating system arranged in the heating cavity, a battery cell used for providing energy for the heating system, a control system used for connecting and controlling the heating system and the battery cell, and a supporting system used for fixing all parts and facilitating holding of a user. The supporting system is provided with a heat insulation area for reducing outward diffusion of heat in the heating cavity on the outer side of the heating cavity, and a heat conduction system which is connected with the heating system and the heating cavity and conducts and dissipates heat generated by the heating system and the heating cavity is arranged in the portion, used for being held by a user, of the supporting system. The device serves as a portable electronic product, the portability of the device requires that the size of the product is as small as possible, and the device strives to achieve balance in demand contradictions by reducing the surface temperature of the product through the design of heat insulation, heat conduction and heat dissipation in a small product space.

The utility model discloses a wedge-shaped jacking mechanism, which comprises a jacking base, a lifting jack, an unloading jack, a wedge-shaped jacking mechanism and a wedge-shaped jacking mechanism, and is characterized in that a jacking jack and an unloading jack are horizontally arranged on the jacking base; the wedge-shaped block group comprises a lower wedge-shaped block and an upper wedge-shaped block, the lower wedge-shaped block and the upper wedge-shaped block are oppositely arranged up and down, and the opposite end surfaces of the lower wedge-shaped block and the upper wedge-shaped block are inclined surfaces with the same slope; the movable end of the jacking jack and the movable end of the unloading jack are both connected with the lower wedge-shaped block and used for driving the lower wedge-shaped block to horizontally slide along the jacking base, and then the upper wedge-shaped block is driven to move up and down in the vertical direction relative to the jacking base. According to the bridge support, jacking operation can be carried out in a small space, jacking of a large structure can be achieved through small jacking force, and therefore maintenance and replacement of the bridge support are achieved.

The invention discloses a privacy-enhanced access control method for medical data sharing, which is characterized in that an efficient and privacy-protected attribute revocation mechanism is innovatively added on the basis of an original decentralized multi-authority attribute verification and strategy hiding mechanism, and an attribute revocation list (ARL) based on a Merkle tree and corresponding ZKP constraints are introduced, so that the privacy-protected access control method for medical data sharing is realized. Fine-grained dynamic authorization is supported, the security problem that user permission changes along with time in a medical environment is effectively solved, and triple privacy security of user attributes, access strategies and attribute validity states is ensured. Through cooperative work of a system initialization stage, a strategy deployment stage, an access request submission stage, an access control decision stage and a data access stage, strong privacy protection, decentralized architecture, fine-grained control and dynamic authorization in medical data sharing are realized; the problems of single-point failure, privacy disclosure and strategy stiffness in a traditional scheme are effectively solved, and a safe and reliable technical basis is provided for cross-institution medical cooperation.

The application discloses a rotary kiln for heat reaction of red mud material and recycling of waste heat, which is characterized by comprising an inner cylinder with a feeding port and a discharging port, an outer cylinder, a combustion machine with a fire outlet, a power device, a material lifting plate, a heat conducting pipe and a smoke outlet; the material lifting plate is connected to the inner wall of the inner cylinder; the power device is connected to the inner cylinder and can drive the inner cylinder to rotate along the axis of the inner cylinder; the inner cylinder is located in the outer cylinder, and an annular cavity is formed between the outer cylinder and the inner cylinder; the fire outlet of the combustion machine is connected to the outer cylinder and extends into the annular cavity; the heat conducting pipe is connected to the inner wall of the inner cylinder at both ends and extends into the annular cavity; and the smoke outlet is located on the wall of the outer cylinder and communicates with the annular cavity. The application realizes external flame heating without pollution of the reactants and has high heat energy utilization rate.

The application discloses a high-entropy oxide loaded lanthanum ferrite gas-sensitive material and a preparation method and application thereof, and comprises the following steps: preparing lanthanum ferrite powder; dispersing the lanthanum ferrite powder in water, adding citric acid, and then performing ultrasonic treatment under ice water bath conditions to obtain a surface-modified base suspension liquid; under ice water bath and stirring conditions, dropping a high-entropy complex mother liquor into the base suspension liquid, then adding urea, and performing hydrothermal reaction to obtain a precipitate; washing and drying the precipitate, and then performing stepwise temperature increasing calcination in air. The sensor prepared from the gas-sensitive material has a low baseline resistance of 11 MΩ at an optimal working temperature of 180 DEG C, a response degree of 45.24 to 50 ppm of acetone, and an optimal working temperature which is reduced by 75 DEG C than that of a pure LaFeO3 sensor; the response and recovery times are shortened to 23.38 seconds and 8 seconds respectively, and the sensor exhibits excellent kinetic characteristics.

The invention relates to the technical field of high polymer materials, and discloses a polyester release master batch as well as a preparation method and application thereof. According to the release master batch, polyester resin is used as a matrix, specific modified organic silicon resin is introduced, and the organic silicon resin is prepared from polydimethylsiloxane containing silicon-hydrogen bonds, multiple hydrogen bond unit monomers containing unsaturated double bonds and fluorine-containing chain segment monomers through a hydrogen-silicon addition reaction. Multiple hydrogen bond groups and fluorine-containing alkyl chain segments are introduced to the same molecular chain at the same time, so that the resin is endowed with temperature responsiveness, excellent dispersity in a polyester matrix and ultralow surface energy after film formation. The polyester release master batch is prepared by adopting a melt blending extrusion process, and then the polyester release master batch and the polyester resin are blended and stretched to prepare the release film, so that the release film has stable and adjustable release force and excellent fingerprint resistance and pollution resistance, keeps good transparency and dimensional stability, and is suitable for the fields of electronic packaging, optical protection films, die cutting materials and the like.

The invention discloses a geological disaster slope reinforcing structure with a high-stability load, and belongs to the technical field of geological disaster protection. The structure comprises a protective net arranged at the slope bottom, and a plurality of cement beads, fixed pulley assemblies and slope top fixing columns which are arranged between the protective net and the slope top; the cement ribs are mounted through the elastic anchoring assemblies and can generate elastic displacement along the slope surface when being pulled; the suspended rope is connected with the top of the protective net, bypasses the fixed pulley and is fixed on the cement rib; the buried rope is connected with the top of the protective net, penetrates through the bottom of the cement rib from the lower portion and is finally connected to the fixing column. When the protective net bears loads and tends to turn over, the buried ropes are tensioned and drive the cement protruding edges to move, the force direction is converted through the fixed pulleys, the suspended ropes are promoted to generate reverse tension, and therefore the rollover force is counteracted. Dynamic dispersion and feedback compensation of the load on the whole slope are achieved through linkage cooperation of micro-displacement of the cement protruding edges and the rope system.

The utility model discloses a kind of color coating decorative aluminium profile, it is related to aluminium profile technical field, including aluminium profile assembly, aluminium profile assembly includes middle part support cylinder and reinforcing frame, the outside of middle part support cylinder is fixedly connected with first reinforcing rib, in the utility model, external load is first acted on reinforcing frame, pass through compression strip and is transferred to compression frame, and concentrated stress is dispersed as annular stress, support strip and connecting frame and support frame cooperate and resist the shear deformation of frame, radial load is obliquely conducted to middle part support cylinder through second reinforcing rib, utilize the torsional advantage of its cylindrical structure and disperse radial force, first reinforcing rib auxiliary converts radial force into annular tension, avoid middle part support cylinder partial compression instability, reinforcing pipe is installed in filling cavity, filling cavity is filled with anti-vibration material, improve axial compression resistance, form three-dimensional stress system, realize the layered transmission and dispersion of force.

The invention relates to the field of chemical industry, and discloses a method for synthesizing ethylene urea through cyclization dehydration of ethylenediamine carbamate, which comprises the following steps: 1) mixing ethylenediamine carbamate, 1, 3-dimethyl-2-imidazolinone and a tin-titanium-based composite catalyst for reaction; 2) centrifuging to obtain a solid phase which is the tin-titanium-based composite catalyst and ethylenediamine carbamate; the obtained liquid phase is 1, 3-dimethyl-2-imidazolinone, ethylene urea and water; 3) washing and filtering the solid phase to obtain a tin-titanium-based composite catalyst solid and an ethylenediamine carbamate aqueous solution, and drying the aqueous solution to obtain ethylenediamine carbamate; 4, the liquid phase is extracted and separated through diethyl ether, 1, 3-dimethyl-2-imidazolinone is obtained after diethyl ether is removed through evaporation, ethylene urea is obtained after ethylene urea and water are obtained in a water phase, and the method has the advantages of being high in atom economy, mild in reaction condition, low in energy consumption and high in yield.

This utility model relates to the field of crop vine lowering technology, and provides a driving device for crop vine lowering equipment, comprising: side adjustment plates rotatably connected to both ends of a fixed plate, each side adjustment plate rotatably equipped with a guide support wheel; a main hanging shaft and a drive shaft rotatably connected between the fixed plates, with several hanging ropes connected to the main hanging shaft, an annular belt below the main hanging shaft, and hanging rope hooks on the annular belt; a main forward shaft sleeve, a secondary forward shaft sleeve, and a reverse shaft sleeve rotatably fitted on the drive shaft, an adjusting component connected to the main forward shaft sleeve, a tensioning component connected to the secondary forward shaft sleeve, a tensioning support wheel on the tensioning component, a locking slider on the reverse shaft sleeve, a lifting component slidably located below the fixed plate, a rack on the lifting component, and a locking gear on the main forward shaft sleeve. Therefore, this utility model is reusable, shortens the time required for vine lowering, improves vine lowering efficiency, and can meet the needs of different crops, expanding the applicability of the device.

This invention discloses a method for cyclically separating waste positive electrode current collectors and positive electrode materials using NMP, comprising the following steps: adding the positive electrode sheet to an NMP solution, stirring, and sieving to obtain a positive electrode cleaning filtrate and aluminum foil; adding a flocculant to the positive electrode cleaning filtrate, stirring, and allowing it to stand for solid-liquid separation to obtain crude NMP solution and positive electrode material powder; adding a dehydrating agent to the crude NMP solution, filtering to remove solids to obtain a recovered NMP solution, which is then recycled for the separation of the positive electrode current collector and positive electrode material. This method reuses the NMP solution repeatedly, thus reducing costs and solving the problem of high costs associated with organic solvents. Furthermore, by introducing non-solvent water into the system, the thermodynamic stability of the system is altered, increasing the solubility of PVDF and accelerating the dissolution rate.

The utility model relates to the field of plastic turntable, concretely relates to a shock -proof buffer type plastic turntable, including the pad, the pad is equipped with the turntable, is equipped with the buffer shock -proof structure between the turntable and pad, is equipped with the ball rotation mechanism on the turntable, through setting up the buffer shock -proof structure by buffer spring, annular washer and buffer pad between the turntable and pad, realized multistage absorption and dispersion to vibration and impact energy, greatly reduced the influence of vibration to the article of placing, through setting up the ball rotation mechanism by the ball sleeve ring and internal ball around the outside of the turntable, change traditional sliding friction into rolling friction, realized the very smooth flexible rotation of turntable. This makes the operator can use smaller force to rotate the turntable easily and adjust the article direction.

The utility model provides an emergency evacuation channel guardrail with a foldable storage structure. The emergency evacuation passage guardrail with the foldable storage structure comprises two groups of mounting seats, and two groups of guardrail structures are symmetrically mounted between the two groups of mounting seats. The two groups of symmetrical guardrail structures are mounted between the two groups of mounting seats, so that the overall strength of the device can be improved, the device can bear impact to a certain extent when the device is used in an emergency evacuation channel, the guardrail structures can be telescopically adjusted in length, the actual use requirements are met, and the fixing plates are mounted on two sides of the bottom of each mounting seat, so that the safety of the device is improved. A positioning pipe is installed on the fixing plate, a positioning rod is installed in the positioning pipe, the positioning rod can be inserted and installed in a positioning hole formed in the ground by rotating the positioning rod, and therefore the installation base is fixedly installed on the ground through the four sets of positioning rods, and then the whole device is fixedly installed; therefore, the device has good stability in use.

The present application relates to the technical field of tracking support, especially to a photovoltaic tracking support with limiting protection function, comprising a torque tube, a connecting bridge, a support seat, a support arm, a lock head, a clamp, a purlin, a first stand, a second stand, a driving mechanism and a crank, the second stand is used for installing the driving mechanism, the support seat is fixedly installed on the top of the first stand through a stand adapter, adjacent torque tubes are fixedly combined through the connecting bridge to form a continuous structure in the length direction of the torque tube, the support arm is integrally formed with the support seat, the second hanging part on the top of the support arm is aligned with the first hanging part on the connecting bridge, the connecting bridge is hung and rotated on the support arm through the cooperation of the rotating shaft, the lock head is rotatably installed on the connecting bridge, when the driving mechanism drives the torque tube to rotate, the torque tube drives the connecting bridge to synchronously rotate on the support arm, and then drives the lock head to synchronously rotate, thereby reducing the response time of the tracking support rotating to the protection angle, and improving the structural safety and wind resistance.

This invention discloses an acidic wastewater treatment process, specifically including the following steps: Step 1, pH adjustment; Step 2, material preparation; Step 3, material feeding; Step 4, mixing; Step 5, sedimentation and aggregation; Step 6, sediment discharge. This invention relates to the field of wastewater treatment technology. This acidic wastewater treatment process involves introducing neutralized acidic wastewater into a treatment tank, using a dispersing and feeding component to sprinkle coagulants and coagulant aids into the treatment tank, and ensuring rapid mixing of the coagulants and coagulant aids with the wastewater through the cooperation of a drive component and a stirring component. Furthermore, with the setting of a swing component and an output tank, the sediment from the wastewater in the treatment tank is controlled to flow into the output tank. With the setting of a screw feed shaft, a separator, and a conveying pipe, the wastewater and sediment are discharged together into a sedimentation tank for sedimentation. During this process, the effective mixing of the coagulants and coagulant aids with the wastewater is further ensured, effectively improving the solid-liquid separation speed of the wastewater.

This utility model belongs to the field of mineral processing, specifically relating to a feeding mechanism and a mineral processing machine. It includes a distribution plate positioned below the feed inlet, allowing slurry to be released from the feed inlet onto the distribution plate. The contact surface between the distribution plate and the slurry forms multiple guide channels. A transmission component is connected to the distribution plate and is connected to a power structure for driving the distribution plate to rotate. A guide cylinder houses the distribution plate inside the guide cylinder. This utility model provides a feeding mechanism and a mineral processing machine to solve the problem of uneven feeding.

The utility model belongs to the technical field of tooth flushing equipment, and particularly relates to a water outlet pipe of a water toothpick and tooth flushing equipment, the water outlet pipe of the water toothpick comprises a water pipe main body and a micro bubble generating structure, the water pipe main body is internally provided with a bubble generating section water path and a flow stabilizing section water path in sequence; the micro-bubble generating structure comprises a porous foaming core part and an expanded foaming core part; the porous foaming core piece is arranged at the water inlet end of the bubble generation section water path; the expansion foaming core piece is arranged at the water outlet end of the bubble generation section water path; the steady flow section water path is arranged on the water outlet side of the expansion foaming core piece; according to the utility model, the flow velocity is increased through the porous foaming core piece, the gas-liquid mixing efficiency is enhanced so as to generate bubbles, and the bubbles are promoted to be broken and uniformly distributed through the expansion foaming core piece; therefore, the water outlet pipe of the water toothpick and the tooth washing equipment are compact in structure and more simplified in design, and are suitable for daily easy use of families and portable requirements of travel work.

The invention relates to the technical field of fireproof coatings, in particular to a preparation method of a silicon dioxide aerogel fireproof coating, which specifically comprises the following steps: S1, mixing and stirring a modified substrate emulsion and pentaerythritol to obtain a primary mixture; s2, adding silicon dioxide aerogel and acrylate emulsion into the primary mixed material; and S3, stirring the mixture obtained in the step S2, discharging, and standing and curing to obtain the silicon dioxide aerogel fireproof coating. The high-silicon fly ash is used for replacing a traditional silicon source, the raw material cost is greatly reduced, meanwhile, resource utilization of industrial solid waste is achieved, and green manufacturing and circular economy guidance are met. Through the collaborative design of the fly ash-based aerogel and the composite flame-retardant emulsion, light weight, high efficiency and low cost of the fireproof coating are realized, and the fireproof coating has good engineering application prospects and market competitiveness.

The degradable plastic packaging bag is prepared from the following raw materials in parts by mass: 20 to 40 parts of low-density polyethylene resin, 10 to 30 parts of high-density polyethylene resin, 50 to 100 parts of pretreated starch, 5 to 15 parts of dendritic polyamidoamine, 5 to 15 parts of starch, 1 to 10 parts of polyvinyl alcohol, 1 to 2 parts of formaldehyde, 1 to 3 parts of citric acid and 1 to 3 parts of calcium stearate. The pretreated starch is obtained by carrying out enzymolysis on starch through pullulanase and then reacting with a cationic etherifying agent. The invention discloses a preparation method of the degradable plastic packaging bag, which comprises the following steps: adding the pretreated starch and the dendritic polyamidoamine into the water, adding the starch and the polyvinyl alcohol, uniformly stirring, adding the formaldehyde in a stirring state, and performing ultrasonic dispersion to obtain the modified starch; and mixing the low-density polyethylene resin, the high-density polyethylene resin and the citric acid, adding the calcium stearate and the modified starch, continuously stirring, performing blow molding, and sequentially performing traction, printing and heat sealing to form a bag.