185results about How to "Good foaming effect" patented technology

The invention provides an automobile control device foaming optimization control method based on multivariate temperature coupling analysis, and relates to the technical field of manufacturing process control, and the method comprises the following steps: based on supporting frame attribute characteristics and a material component ratio, according to a preset foaming processing stage and a foaming evaluation function, in a simulation foaming space, according to a foaming evaluation function; performing simulation optimization on the first temperature control parameter, the second temperature control parameter, the third temperature control parameter and the fourth temperature control parameter to generate an optimal temperature control strategy; and according to the preset foaming processing stage and the optimal temperature control strategy, executing foaming control of the target steering wheel. The technical problems that a traditional foaming technology pays more attention to control of single temperature, multiple influences of different temperature changes on foaming reaction cannot be effectively considered, foaming is not uniform, and the foam structure is not stable can be solved; by accurately controlling the four temperature control parameters, the mutual influence and coupling relationship among the temperatures can be fully considered, and uniform temperature distribution and stable foam structure in the foaming process are ensured.

The invention discloses a foam concrete nano foaming agent and application thereof, and belongs to the technical field of concrete materials. The foam concrete nano foaming agent is composed of the following components in percentage by mass: 10-50% of cellulose; 10%-50% of a water-soluble polymer material; 5%-30% of a surfactant; and 5%-30% of nanoparticles. The foam concrete nano foaming agent provided by the invention has the advantages of low cost and good foaming effect. Nano foam generated by foaming of the foaming agent is high in stability, and when the foaming agent is applied to preparation of a foam concrete material, the foam concrete is wide in dry density range and low in collapse rate, has good mechanical properties, flowing properties, dry shrinkage properties, stability and heat insulation properties, and is wide in application prospect. The method is suitable for the fields of building materials, housing construction, road and bridge engineering, cast-in-place backfill engineering, pit goaf backfill, garbage burying and the like.

The invention provides a nano foam scrubbing agent suitable for environments with various temperatures and mineralization degrees as well as a preparation method and application of the nano foam scrubbing agent. The nano foam scrubbing agent comprises an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant, foam stabilizing particles and a solvent, the total mass concentration of the anionic surfactant, the nonionic surfactant and the zwitterionic surfactant in the nano foam scrubbing agent is 0.1-1.0 wt%, and the mass concentration of the foam stabilizing particles is 0.1-0.5 wt%; the mass ratio of the anionic surfactant to the nonionic surfactant to the zwitterionic surfactant is (10-30): (15-20): (15-25). The foam scrubbing agent disclosed by the invention has relatively good foaming, foam stabilizing and liquid carrying capacities at 35-95 DEG C in a mineralization degree range of 10000-50000 mg / L, has very good salt resistance and calcium and magnesium ion resistance, and can adapt to environments with various temperatures and different mineralization degrees.

The invention discloses an environmentally friendly high-elastic polyurethane modified acrylic runway surface adhesive and a preparation method thereof, which solves the problems of insufficient compatibility and mechanical strength of a plastic runway prepared by using organosilicon modified polyurethane in the existing process, and easy shedding or stratification when the organosilicon is compounded with the polyurethane. The runway surface adhesive is composed of the following raw materials: water-based polyurethane emulsion, modified acrylate, modifier, flame retardant, antioxidant, crosslinking agent, auxiliary foaming agent and white oil. The invention provides an environmentally friendly high-elastic polyurethane modified acrylic runway surface adhesive, which uses water-based polyurethane emulsion and modified acrylate as base materials, and the method of modifying the water-based polyurethane emulsion by modified acrylate is more environmentally friendly, while the modifier in the raw materials ensures that the runway surface adhesive has high elasticity and crosslinking density, and the modifier and the auxiliary foaming agent cooperate with each other to significantly improve the foaming effect of the plastic runway, and help to generate uniform and dense bubbles inside the runway surface adhesive material.

The invention relates to a preparation method of a supercritical foaming polylactic acid material, and belongs to the technical field of foaming polylactic acid.The preparation method comprises the steps that a polycaprolactone-polylactic acid copolymer and a chain extender YMX-06 serve as modifiers to prepare modified polylactic acid granules, so that the strength and ductility of polylactic acid melt are improved, and the foaming temperature and pressure are reduced; in a supercritical state, carbon dioxide has high diffusivity and low viscosity, so that the carbon dioxide can uniformly permeate into a modified polylactic acid granule matrix to form tiny bubbles, the bubbles are not easy to collapse in a bubble growth stage, the pore size distribution uniformity is good, the sizes of the bubbles are small, and the walls are thin; compared with pure polylactic acid, the obtained modified foaming material is higher in foaming ratio, lighter, better in heat retaining property and high in mechanical strength. The ultralight, environment-friendly and foaming agent residue-free degradable foam material can be used in the fields of building insulation, cold-chain transportation, anti-collision packaging and the like.

The invention relates to the technical field of fire extinguishing agents, and discloses a fluoride-free anti-solubility foam fire extinguishing agent and a preparation method thereof.The fluoride-free anti-solubility foam fire extinguishing agent comprises a hydrocarbon surfactant, a carboxyl modified organosilicon surfactant, a foam stabilizer, a cosolvent, water and a pH regulator; the carboxyl modified organic silicon surfactant is obtained by modifying an organic silicon surfactant by using maleic anhydride; the foam stabilizer contains xanthan gum and a component A, according to the invention, the organosilicon surfactant is modified, so that the obtained carboxyl modified surfactant has good surface activity and water solubility; xanthan gum and a component A (polyethylene oxide-polypropylene oxide-polyethylene oxide and other substances) are compounded to serve as a foam stabilizer, so that the foam stability and the anti-dissolving performance can be improved, and the foam stabilizer also has temperature-sensitive-thermal response performance; under the combined action of the components, the fire extinguishing agent provided by the invention has excellent fire extinguishing performance and can quickly extinguish non-polar fuel and polar fuel.

The invention discloses an anti-aging and anti-yellowing foaming polyester material and a preparation method thereof, and relates to the technical field of polyester materials. The anti-aging and yellowing-resistant foamed polyester material is prepared from the following raw material components in parts by weight: 3 to 5 parts of anti-ultraviolet SEBS (Styrene-Ethylene-Butylene-Styrene), 3.6 to 7 parts of triethylamine, 4 to 6 parts of flame-retardant and wear-resistant filler, 100 parts of TPEE (Thermoplastic Polyether Ester Ether), 0.9 to 1.1 parts of polymer wax and 0.6 to 0.8 part of foaming agent, the anti-ultraviolet SEBS is obtained by copolymerizing and grafting an unsaturated benzophenone ultraviolet absorbent, SEBS and maleic anhydride; the flame-retardant and wear-resistant filler is obtained by mixing and reacting carboxylated nano silicon dioxide, pentaerythritol and phosphorus oxychloride; the polymer wax adopts EVA (Ethylene Vinyl Acetate) wax; azodicarbonamide is adopted as the foaming agent; the anti-aging and anti-yellowing foaming polyester material disclosed by the invention is relatively good in mechanical property, anti-aging property, flame retardant property and compression resistance.

The invention belongs to the technical field of oil exploitation foam plugging agents, and particularly relates to nano-modified CO2 multi-chain alkyl amidine, a CO2 response foam plugging agent, a preparation method and application. The CO2-responsive multi-chain alkyl amidine provided by the invention is obtained by electrostatic adsorption of an active adsorption center (tertiary carbon or tertiary nitrogen) of the multi-chain alkyl amidine and part of negatively charged nano silicon dioxide-calcium carbonate, is sensitive in stimulation response to CO2, has good foaming amount, foam stability and temperature and salt resistance, is environment-friendly and easy to degrade, and has a good application prospect. The foam plugging agent can avoid pollution of an oil layer and plugging of a stratum and can be used for preparing a CO2 response foam plugging agent.

The utility model provides an EPS (Expandable Polystyrene) particle mold filling and feeding assembly. The EPS particle mold filling and feeding assembly comprises a mounting frame and a mold filling device, the storage box is used for containing EPS particles, and the storage box is arranged on the mounting frame; the discharging pipe is fixedly communicated with the bottom of the material storage box, an auger is rotatably mounted in the discharging pipe, and the top end of the auger extends into the material storage box; the telescopic pipe is used for feeding materials into the EPS foam box mold, and the telescopic pipe is fixedly communicated with the discharging pipe; the fan is used for supplying air into the telescopic pipe, the fan is fixedly mounted on the mounting frame, a connecting pipe is fixedly mounted at the air inlet end of the fan, and the air outlet end of the connecting pipe is fixedly communicated with the telescopic pipe. The EPS particle mold filling and feeding assembly has the advantages that continuous and efficient EPS particle mold filling and feeding operation can be achieved, and the production efficiency can be improved.

The water purifying and drinking machine comprises a water outlet assembly, the water outlet assembly comprises a water-vapor separation box, the water-vapor separation box is provided with a water-vapor separation cavity, a water inlet, a water outlet and an exhaust port, the water inlet, the water outlet and the exhaust port are communicated with the water-vapor separation cavity, and a main flow channel is formed between the water inlet and the water outlet. Convex ribs which extend upwards and are distributed on the two sides of the main flow channel are arranged on the bottom face of the water vapor separation cavity, and the convex ribs located on one side of the main flow channel form a plurality of continuous rectification channels communicated with the main flow channel. The rectification channels arranged along the two sides of the main flow channel are arranged in the water-vapor separation cavity, one part of water entering from the water inlet flows to the water outlet along the main flow channel, and the other part of water advances along the rectification channels and converges with water flow of the main flow channel, so that the water flow cannot directly flush the water outlet in a large area, and the flow speed of the water flow tends to be stable; the water type of the water flow discharged from the water outlet is optimized, the attractiveness is improved, and the water drop splashing phenomenon is reduced.

The invention belongs to the technical field of environmental protection, and relates to a blocking agent composition, a blocking foaming agent, a preparation method of the blocking foaming agent, soil remediation foam and a remediation method. The blocking agent composition comprises modified protein and a foaming agent; wherein the modified protein is obtained through reaction of natural protein and fatty acid succinimide ester, and based on the total weight of the blocking agent composition, the content of the modified protein is 10-99 wt%, and the content of the foaming agent is 1-90 wt%. The barrier foaming agent at least has the following beneficial effects: the barrier foaming agent provided by the invention has good foaming capacity and stability, and can play a role in barrier and repair for a long time; compared with the reported protein foam composition, the protein compound provided by the invention is simple, easy to obtain and low in cost; the components of the barrier foaming agent are green and degradable, secondary pollution is avoided, and energy conservation and environmental protection are achieved.

The invention relates to the technical field of cement grinding aids, in particular to a composite liquid cement grinding aid and a preparation method of the composite liquid cement grinding aid. Maleic anhydride, triethanolamine, acrylic acid and isopentenyl polyoxyethylene ether are used as raw materials in a macromolecular grinding aid solution; a reaction product of maleic anhydride and triethanolamine can form a compound with special functional groups, the functional groups can be effectively adsorbed on the surfaces of cement particles, friction among the particles is reduced, the grinding efficiency is improved, and the dispersity and stability of the grinding aid can be further enhanced by adding acrylic acid and isopentenyl polyoxyethylene ether, so that the grinding aid has a good application prospect. The cement particles are more easily dispersed in water, the agglomeration phenomenon is reduced, and the refining of the cement particles is facilitated; according to the invention, sodium lignin sulfonate is modified by grafting diethanolamine, and on the basis of retaining the original dispersibility of sodium lignin sulfonate, a new functional group is introduced, so that the interaction between sodium lignin sulfonate and cement particles can be enhanced, and the grinding aiding effect is further improved.

The invention relates to the technical field of plastic product preparation, and discloses a PBAT online tackifying supercritical gas foaming system and foaming method.The system comprises a dynamic mixer used for mixing and stirring plastic melt, a chain extender and supercritical gas; the gas pressurization module is used for pressurizing gas guided from the gas source to supercritical gas, the gas pressurization module is further used for guiding the supercritical gas to the dynamic mixer, and the material module is used for conveying plastic melt to the dynamic mixer. The tackifier module is used for conveying a chain extender to the dynamic mixer and is provided with a fluid metering unit, and the fluid metering unit is used for detecting the conveying amount of the chain extender. And the control module is used for controlling the gas pressurization module, the material module and the tackifier module. Through cooperation of the dynamic mixer, the gas pressurization module, the material module, the tackifier module and the control module, efficient production of PBAT online tackifying supercritical gas foaming is effectively achieved.

The invention relates to the technical field of spraying devices, and discloses a spray head assembly and a bathroom device.The spray head assembly comprises a liquid inlet part and is provided with a liquid inlet cavity, the cavity wall of the liquid inlet cavity comprises an inner cavity wall and an outer cavity wall, the outer cavity wall is arranged on the outer side of the inner cavity wall in a surrounding mode, and a gap is formed between the outer cavity wall and the inner cavity wall to form the liquid inlet cavity; the inner cavity wall and / or the outer cavity wall are / is provided with at least one fluctuating section, and the fluctuating section extends in the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity, so that at least part of the inner cavity of the liquid inlet cavity is gradually shrunk in the direction from the liquid inlet end to the liquid outlet end. The turbulent flow effect of mixed liquid sprayed out of the liquid outlet end can be enhanced, the contact surface area of the mixed liquid and air is increased, and the foaming effect is improved.

The utility model discloses a natural moxibustion patch which comprises a bottom layer bonding patch, a medicine covering patch is bonded at the upper end of the bottom layer bonding patch, a deformation buffering frame is installed in the medicine covering patch, medicine is filled in containing protrusions before the natural moxibustion patch is used, round waterproof cloth is bonded on an upturned waterproof layer and a cotton cloth piece, and when the natural moxibustion patch is used, the medicine covering patch is not prone to deformation. By means of the operation, the contact area of the medicine and the skin is limited within the range of the receding hole, the medicine is prevented from contaminating other body parts, at the moment, the containing protrusion is pressed, the shaping and bending metal rod deforms, and through extrusion of the supporting piece, the medicine can be taken out of the body, and the medicine can be taken out of the body. When the skin foams, the medicine can be pushed to move outwards, and the shaping and bending metal rod can generate elastic deformation to give way and buffer the skin foaming, so that the skin foaming effect is improved.

The invention discloses polyurethane foaming equipment, and relates to the technical field of polyurethane foaming, the polyurethane foaming equipment comprises a main body mechanism, blade mechanisms, a supporting shaft and a supporting cylinder, the supporting shaft and the supporting cylinder are rotatably mounted in a foaming cylinder, a plurality of groups of camshafts are uniformly and rotatably mounted on a chassis of the supporting shaft, and one group of camshafts corresponds to one group of blade mechanisms; the sliding block is installed on a circulating groove of the cam shaft in a sliding mode, the air inlet pipe of the blade is installed on the sliding block in a rotating mode, the air inlet pipe is installed on a rectangular groove of the supporting cylinder in a sliding mode, the supporting shaft rotates to drive the blade mechanism to revolve, and the cam shaft rotates to drive the blade mechanism to longitudinally slide on the rectangular groove and rotate. A plurality of groups of one-way valve assemblies are arranged on exhaust holes of the blades, and an air extracting pump on the annular air pipe outputs air above the foaming cylinder from the one-way valve assemblies through the contraction ventilation pipe and the blades. The foaming efficiency and the foaming effect of the polyurethane foaming raw material can be improved.

The invention discloses an efficient latex pillow production line which is characterized by comprising a conveying assembly capable of driving a forming mold to move. A latex material filling assembly, a first mold closing assembly, a vacuumizing assembly, a first cooling assembly, a carbon dioxide filling assembly, a heating assembly, a first mold opening assembly, a cleaning assembly and a second cooling assembly are sequentially arranged along the conveying path of the conveying assembly. The device is simple in structure and reasonable in design, forming molds can be transferred to different machining assemblies for corresponding machining, the overall structure layout is more reasonable, all the machining assemblies can conduct machining operation in real time, it is not needed to wait for one-by-one machining of the forming molds, and the machining efficiency is improved. And the production efficiency of the latex pillow can be greatly improved.

The utility model provides a foaming fire extinguishing device, which belongs to the technical field of fire extinguishing devices, and comprises a main pipe and a foaming stirring rod arranged on the main pipe, one end of the main pipe is provided with an inlet, the other end of the main pipe is provided with two outlets, each outlet is provided with a quick connector, and the inner wall of the main pipe is respectively provided with a first fixing frame; the air pipe capable of adjusting the air flow is matched with the foaming stirring blade rod in the main pipe, so that the foaming effect can be effectively improved, the air inlet amount of an air path can be controlled to achieve different foaming effects according to specific use conditions, various forms of dry foam and wet foam can be realized, more changeable fire extinguishing scenes can be dealt with, and when a fire disaster occurs, the fire extinguishing effect can be improved. And meanwhile, the assembly capable of locking and unlocking the foaming stirring rod can select whether to rotate the foaming stirring rod or not, so that the overall water content of subsequent foam is changed, the dry and wet state of the foam is further adjusted, and the selection flexibility is improved.

The invention relates to the technical field of foaming polyurethane, and discloses a foamable polyurethane composition, a modified polyurethane and a preparation method thereof, a polyurethane foam material and a preparation method thereof, wherein the composition comprises polyurethane, polar monomer grafted polypropylene and an amino compound, and based on the total weight of the composition, the content of the polyurethane is 70-95wt%, the content of the polar monomer grafted polypropylene is 3-29.9wt%, and the content of the amino compound is 0.1-3wt%. The invention modifies the polyurethane by adopting the polar monomer grafted polypropylene and the amino compound, and the polyurethane cooperates with the polar monomer grafted polypropylene and the amino compound, so that the prepared modified polypropylene has better viscoelastic properties, thereby making the prepared polyurethane foam material have better foaming effect.

The invention relates to a method for manufacturing foamed plastic through a foamed plastic mold, and relates to the field of foamed plastic manufacturing, in order to solve the problems that contact between raw material particles and steam is not uniform, and product quality is influenced, the method comprises the following steps that S1, a vibration base is started, and the raw material particles are added into an impurity removal box for impurity removal; s2, preheating the mold; s3, adding the raw material particles subjected to impurity removal into a mold cavity; s4, the steam input mechanism inputs steam into the mold cavity, the raw material particles are foamed, and the vibration base stops working; s5, cooling the mold; s6, compressed air is input into the mold cavity through an air input mechanism; and S7, the mold cavity is opened, and the formed foamed plastic is taken out. By arranging the vibration base, the raw material particles are evenly spread after entering the mold cavity, when part of the raw material particles are subjected to foaming forming, the remaining raw material particles move in the vibration process, the raw material particles make uniform contact with steam, the foaming efficiency and the foaming effect of the raw material particles are improved, and therefore the product quality is improved.

The invention belongs to the field of launch boxes, and discloses a reusable launch box fragile cover, a launch box and a method, the reusable launch box fragile cover comprises a cover frame, a fragile cover body and a pressing plate, the fragile cover body is composed of a plurality of springback petal bodies, and the springback petal bodies comprise elastic bodies, skin and light filler, so that the fragile cover can be opened and folded outwards under the action of external force, and the pressing plate is arranged on the fragile cover body. Meanwhile, the springback petal bodies can be recovered, so that the fragile cover can be repeatedly used, and the maintenance cost is greatly reduced; in addition, due to the adoption of the design of the springback petal bodies, the damage to operators, peripheral equipment and the environment caused by splinters generated by opening the cover in a traditional explosion mode is avoided, and the safety is improved. By the adoption of the fragile cover, the problems that an existing fragile cover of the launching box is disposable, maintenance cost is high, and potential safety hazards exist are effectively solved; the fragile cover has the advantages of light weight, water resistance, dust resistance, corrosion resistance and the like; and the strength is high, the response is fast, rebounding can be achieved, and an internal missile can be effectively isolated from the outside when not in use.

The invention discloses an inflatable continuous foaming device and a foaming method thereof.The inflatable continuous foaming device comprises a machine barrel, a screw screwed in the machine barrel, a foaming box connected with the machine barrel, an air injection mechanism and a heating mechanism, the screw comprises a rod body and threads spirally distributed on the rod body, a feeding port is formed in one end of the machine barrel, and a foaming outlet is formed in the other end of the machine barrel; the machine barrel is divided into a softening section, a melting and mixing section, a first foaming section and a second foaming section from a feeding port to a foaming outlet, a material pushing space formed between threads of the screw and the machine barrel is gradually enlarged from the feeding port to the foaming outlet according to sections, and injection ports are formed in the positions, corresponding to the melting and mixing section, the first foaming section C and the second foaming section, of the machine barrel. The injection port is connected with the gas injection mechanism, high-pressure gas permeates into the foaming material and diffuses into the foaming box, the foaming box is divided into a pressure relief expansion section and a forming section, an inlet of the pressure relief expansion section is communicated with the foaming outlet, the diameter of the pressure relief expansion section is larger than that of the foaming outlet, and the diameter of the forming section is larger than that of the pressure relief expansion section.

The present invention belongs to the field of PVC technology. An anti-static and anti-precipitation PVC foam product comprises the following raw materials by weight: 80 to 120 parts of PVC resin, 10 to 15 parts of ethylene-vinyl alcohol copolymer, 5 to 8 parts of calcium zinc stabilizer, 10 to 45 parts of plasticizer, 15 to 20 parts of composite foaming agent, 6 to 9 parts of foaming regulator, 2 to 3 parts of lubricant, 0.2 to 1 part of antioxidant, and 5 to 10 parts of filler. The PVC foam product of the present invention has the properties of anti-plasticizer precipitation, anti-static and the like, and has good mechanical properties. The present invention also provides a method for preparing an anti-static and anti-precipitation PVC foam product.

The invention relates to the field of ore flotation, in particular to tantalum-niobium ore flotation equipment. The tantalum mud ore flotation equipment has the defects that the tantalum mud ore attached to foam sinks into ore pulp again due to the fact that the tantalum mud ore is prone to remaining on a discharging ramp, and the tantalum mud ore flotation efficiency is low due to the fact that paddles of existing tantalum mud ore flotation equipment are prone to collecting and dispersing foam. Tantalum-niobium ore flotation equipment comprises a support and the like. A flotation box is fixedly connected to the support, two lifting sliding grooves are formed in the inner wall of the flotation box, a discharging inclined face is arranged at the bottom of the inner wall of the flotation box, and a discharging opening is formed in the bottom of the discharging inclined face on the flotation box. Ore pulp and a collecting agent in the stirring barrel are continuously mixed through the six sets of foaming screen plates, the foaming effect of the collecting agent can be better, the flotation efficiency of tantalum mud ore is improved, meanwhile, the scraping plate can be lifted upwards after scraping floating foam, the situation that the floating foam on the surface of the ore pulp is scraped in the reset process is avoided, and the flotation efficiency of tantalum mud ore is improved. Therefore, the situation that the tantalum mud ore sinks into the ore pulp again due to the fact that the scraper crashes floating foam can be reduced.

A kind of gas-liquid mixing device, flushing device and closestool, including being provided with at least sequentially communicating first mixing chamber and second mixing chamber in liquid outlet direction, first mixing chamber is also communicated with first air inlet, and second mixing chamber is communicated with second air inlet and bubble outlet passage;It further includes air inlet channel, air inlet channel is communicated with first air inlet and second air inlet. When using, air enters first mixing chamber and foaming liquid are mixed to constitute preliminary mixed liquid by first air inlet;Preliminary mixed liquid is mixed again with the air entered by second air inlet, to form mixed liquid with numerous micro-bubbles. Compared with viscous foaming liquid, mixed liquid is larger and more delicate in volume, and has better flowability, can quickly form uniform and delicate foam with other liquid, so that less foaming liquid can achieve better foaming effect, keep foam solubility relatively stable, improve the use frequency of single bottle foaming liquid.

This invention discloses a method for preparing a modified chitosan whisker-reinforced and toughened PBAT microfoamed composite material. Biodegradable and high-modulus chitosan whiskers are selected as the reinforcing agent, enabling the composite material to achieve full biodegradability. Through surface modification technology, PBAT segments with the same composition as the PBAT matrix are introduced onto the surface of the chitosan whiskers. This design ensures good compatibility between the chitosan whiskers and the matrix, resulting in thorough dispersion within the matrix and achieving a more efficient reinforcement and toughening effect than traditional reinforcing agents. Simultaneously, the grafted and modified chitosan whiskers can increase the melt viscosity and melt strength of the PBAT matrix, thereby improving its foaming properties.

The utility model relates to the technical field of coating production equipment, in particular to a microcellular foaming forming machine for a heat-preservation stone-chip-resistant coating. Comprising a mixing stirrer, raw material storage tanks connected with the interior of the mixing stirrer through pipelines, a plurality of metering pumps arranged on the pipelines and in one-to-one correspondence with the raw material storage tanks and a gas introduction device connected with the interior of the mixing stirrer, and a rotating shaft is arranged in the mixing stirrer through a driving device; three layers of blades of a spiral structure are sequentially arranged on the rotating shaft in the axial direction of the rotating shaft, and sawteeth are arranged on the edges of the front ends of the blades. By optimizing the paddle, the efficient stirring and mixing of the coating are realized, and better conditions are provided for foaming, so that the foaming effect of the coating is greatly improved.

The invention discloses a flame retardant PP / SEBS foam composite material and a preparation method thereof, and relates to the technical field of foam materials. The foam composite material of the invention comprises the following raw materials in parts by weight: 100 parts of polymer material, 3-5 parts of foaming agent AC, 1-3 parts of modified or unmodified nano silicon dioxide, and 20-25 parts of flame retardant; the polymer material is composed of PP and SEBS, wherein PP accounts for 80-95% of the total mass of the polymer material, and SEBS accounts for 5-20% of the total mass of the polymer material; the flame retardant is composed of ammonium polyphosphate and triazine carbon forming agent CFA in a mass ratio of 2-3:1. The PP / SEBS foam composite material of the invention has excellent flame retardant properties, mechanical properties and foaming properties, and has broad application prospects.

The utility model discloses a pouring gate angle adjustable structure of a PIP mould, which comprises a base, supporting plates are respectively bolted and fixed on the inner walls of the two sides of the base, rotating block bases are respectively and fixedly arranged at the top ends of the two groups of supporting plates, rotating blocks are arranged in the two groups of rotating block bases, and the two groups of rotating blocks are fixed on the base. Pressing blocks are arranged at the tops of the two sets of rotating blocks correspondingly, the two sets of pressing blocks are fixed to the top of the rotating block base through fixing screws in a bolting mode correspondingly, connecting blocks are fixed to the tops of the two sets of rotating blocks in a bolting mode correspondingly, and the mold core and the connecting blocks are connected through the fixing screws, so that the positions of the rotating blocks can be manually adjusted; the angle of the mold core can be adjusted according to actual requirements, the effect of adjusting the angle of the mold is achieved, and the mold has the advantages of being reasonable in structure and easy to assemble, has the effect of adjusting the angle of the mold, improves the foaming effect of products, and reduces the rejection rate of the products.

The invention belongs to the technical field of coal mine fire prevention and extinguishing, and discloses a mining gel-protein foam extinguishing agent and a preparation method thereof.The preparation method mainly comprises the steps that kitchen waste serves as a raw material, and animal protein and plant protein in the kitchen waste are hydrolyzed through proteolytic enzyme to form hydrolyzed protein; the gel-protein foam extinguishing agent is prepared by respectively screening the concentration of the four surfactants with the optimal foaming performance, compounding the four surfactants with the prepared hydrolyzed protein and adding components such as a gelling agent, a cross-linking agent and an anti-freezing agent. According to the prepared gel-protein foam fire extinguishing agent, efficient fire extinguishing is guaranteed, meanwhile, resource utilization of domestic waste is achieved, compared with a traditional foam fire extinguishing agent, the gel-protein foam fire extinguishing agent is more stable, the used materials are all bio-based raw materials, and pollution to the environment is avoided.