12results about How to "High foaming rate" patented technology

The invention provides a foam dust suppression material as well as a preparation method and application thereof. The foam dust suppression material comprises a foaming agent, a surfactant, a thickening agent, inorganic salt and a solvent; wherein the foaming agent comprises soybean protein isolate and / or collagen; the surfactant comprises an anionic surfactant and / or a nonionic surfactant; the inorganic salt comprises one or more of potassium sulfate, magnesium chloride, sodium sulfate and sodium chloride. According to the foam dust suppression material, specific components are adopted, all the components cooperate with one another, and the dust suppression material is high in foaming rate, good in stability, good in dust suppression effect, environmentally friendly, non-toxic to the human body, capable of protecting the health of workers and improving the comfort level of the working environment, low in cost and good in economic benefit and social benefit.

The invention belongs to the field of chemical engineering, and discloses nano-cellulose-containing super-stable water-based foam and a preparation method and application thereof.The nano-cellulose-containing super-stable water-based foam is prepared from, by mass, 0.1-2.0 parts of nano-cellulose hydrogel, 0.5-5.0 parts of lauryl sodium sulfate, 1.0-5.0 parts of tetradecanol, 0.1-3.0 parts of polyvinyl alcohol and the balance water on the basis that the total mass of compound water-based foam is 100 parts; the components are stirred at a high speed to generate foam, and the super-stable water-based foam containing the nanocellulose is prepared. According to the super-stable foam mulching film disclosed by the invention, the processes of drainage, coalescence and disproportionation can be effectively slowed down after the nano cellulose, the tetradecanol and the polyvinyl alcohol are added, so that the foam has super-long service life and can be stabilized for more than 20 days. The water-based foam has good environmental adaptability and renewability, a multi-layer foam system is more stable than foam of a single-layer film, and the water-based foam is used as a foam mulching film and has better water retention, humidification and heat preservation effects.

The utility model discloses a ground rail type circulating door foaming device which comprises a rubber assembly and a foaming assembly, the foaming assembly is located in front of the rubber assembly, the rubber assembly comprises a rubber barrel, a handle, an inner electric rod, a piston plate and a feeding pipe, the handle is fixedly connected to the rear side wall of the rubber barrel, and the inner electric rod is fixedly connected to the rear side wall of the rubber barrel. An inner electric rod is fixedly connected to the rear side wall of the interior of the glue barrel, a piston plate is fixedly connected to the front side wall of the inner electric rod, and a feeding pipe is fixedly connected to the circumferential surface of the glue barrel; the foaming assembly comprises a connector, a through hole, a foaming box, a front electric rod, a hose, a cleaning plate, a top electric rod, a sealing plate, a brush, a front hole, a filter screen and a nozzle, and the connector is conical and is fixedly connected with the front side wall of the rubber barrel. Through the structure, in the foaming process, the gas flow in the connecting pipe can be changed by adjusting the gas valve, so that the optimal gas-liquid ratio is adjusted, and the foaming rate of a foaming agent is improved.

This invention discloses a high-strength, high-foaming-rate, low-viscosity oil-based polyurethane grouting material and its preparation method. The material comprises, by weight, 65-85 parts PMDI, 10-20 parts low molecular weight polyether polyol, 1-6 parts octahydroxy-POSS, 5-15 parts epoxy resin reactive diluent, 3-8 parts high-boiling-point solvent, 0.5-2.5 parts composite foaming catalyst, 1-3 parts trimer and epoxy ring-opening composite catalyst, and 1-2 parts foam stabilizer. This invention eliminates traditional volatile solvents and constructs an in-situ interpenetrating crosslinked network of "nanocage-type silsesquioxane (POSS)-epoxy resin-polyisocyanurate (PIR)". According to JC / T2041-2020 testing, this material not only has extremely low viscosity (≤400mPa·s) and extremely high non-volatile matter (≥95%), but also breaks the mechanical curse of conventional foamed materials. Under extreme foaming conditions such as rapid solidification upon contact with water (≤30s) and foaming rate ≥4000%, the compressive strength is still as high as 30MPa or more. It completely solves the global problem that high foaming of materials in leak sealing and reinforcement projects inevitably leads to low strength, and has excellent environmental protection and structural reinforcement pressure resistance.

This invention discloses a photocurable 3D printing elastic resin and a foaming method. The photocurable 3D printing elastic resin incorporates surface-modified high-temperature thermally foamed microspheres. The double bond formation and roughening of these microspheres improve the crosslinking and mechanical interlocking with the resin, thereby enhancing tensile strength. After printing, the microspheres undergo ultrasonic and vacuum pretreatment to accelerate the vaporization of liquid alkanes within the thermally foamed microspheres. Heating then allows the alkanes to escape, producing a foaming effect. This method yields elastic printed parts with high foaming rate and good uniformity, meeting the application requirements of lightweight, highly elastic, and functionally graded materials.

This invention discloses a glass fiber reinforced polypropylene material, its preparation method, and its application. The glass fiber reinforced polypropylene material comprises the following components in parts by weight: 55-95 parts polypropylene resin, 10-35 parts glass fiber, and 1-5 parts compatibilizer; wherein the polypropylene resin contains block copolymer polypropylene A and block copolymer polypropylene B in a weight ratio of (2-4):1; the average molecular weight M of block copolymer polypropylene A is... w The mass fraction of the copolymerized ethylene propylene diene monomer (EPDM) phase is 10%-20%, with a molecular weight of 200,000-290,000; the average molecular weight M of the block copolymerized polypropylene B is... w The mass fraction of the copolymerized ethylene propylene diene monomer (EPDM) phase is 11%-17% with a molecular weight ≥340,000. This invention produces glass fiber reinforced polypropylene materials by selecting block copolymers A and B with specific average molecular weights and EPDM phase contents. These materials exhibit strong tensile properties, flexural properties, and unnotched impact resistance under low-temperature conditions.

The present invention relates to the technical field of grouting materials, and discloses a polyurethane type grouting material and a preparation method and application thereof, which is composed of component A and component B; component A includes 86-92 parts by weight of biscardanol polyether polyol, 1.3-2 parts by weight of water, 0.25-0.3 parts by weight of dibutyltin dilaurate, 5-8 parts by weight of triethanolamine, and 2-3 parts by weight of foam stabilizer; component B is 25-38 parts by weight of polymethylene polyphenyl polyisocyanate. The present invention uses biscardanol polyether polyol as a polyol component, which contains rigid terphenyl, can improve the modulus and strength of the polyether soft segment, and it contains a biscardanol alkyl long chain, can be physically crosslinked by hydrophobic association, improves the crosslinking degree and cohesion of the polyurethane molecular chain, and significantly improves the compressive strength and tensile strength of the polyurethane grouting material.

The invention discloses a two-stage foam dust removal system for mining, comprising a cyclone dust removal component (11), a dust removal chamber (12), a foam breaking component (13), and a negative pressure component (14) connected in sequence from left to right; a foaming component for generating foam is provided above the dust removal chamber (12), and the output end of the foaming component is connected to a nozzle (51) of a conical structure located in the dust removal chamber (12) through a conveying pipe group (25); a foaming net group (4) for secondary foaming is rotatably installed in the conveying pipe group (25), and the nozzle (51) is arranged to rotate downward by 0-60°, and is angularly positioned by a limit assembly thereon. The two-stage foam dust removal system for mining and the control method thereof not only effectively improve the foam utilization rate and dust coverage rate, greatly reduce energy consumption, solve the problem of dust-containing foam pollution, but also ensure that the ejected foam fully collides with the dust-containing airflow, thereby improving the dust capture rate.

The invention discloses a foam shield sprayer which comprises a liquid inlet section, a foaming cavity and a liquid outlet section which are sequentially connected, a spinning disk is installed in the foaming cavity and extends in a spiral shape, a plurality of through holes are formed in the spinning disk, and at least one part of fluid sprayed into the foaming cavity from the liquid inlet section can impact on the spinning disk; the fluid impacted on the spinning disk can spirally flow towards the liquid outlet section along the spinning disk, so that the fluid in the foaming cavity is spirally disturbed and mixed; through the arrangement of the through holes, the flowing direction of part of fluid can be changed, so that the fluid in different flowing directions collides with one another, bubbles in the fluid can be cut, water and air are mixed more sufficiently, and the foaming rate is further increased.

The invention relates to the field of physical foaming, in particular to C08J9 / 12. The method includes the following steps: crosslink the foaming matrix to obtain a plurality of crosslinked prefabricated products, add the crosslinked prefabricated products into a reaction reactor filled with polar liquid, add nitrogen for foaming, relieve pressure, and heat for foaming to obtain the foaming materials. In the polar liquid system, the inventor finds that the ratio of the distance between the adjacent crosslinked prefabricated products to the thickness of the prefabricated products as well as the difference between the melting temperature of the polymer and the temperature of the polar liquid need to be controlled to promote the adjacent prefabricated products in full contact with the polar liquid, and prefoaming can be carried out under the condition of low temperature difference, namely, at the low temperature of the polar liquid, to promote the foaming ratio and the cell uniformity.

The invention belongs to the technical field of accelerator beam diagnosis, and relates to a silicon dioxide preparation method for a coaxial cable, a superconducting low-temperature coaxial cable and a joint connector, the coaxial cable comprises an inner conductor layer and an outer conductor layer, and a silicon dioxide layer is arranged between the inner conductor layer and the outer conductor layer. The silicon dioxide in the silicon dioxide layer is prepared by the following steps: filling silicon dioxide and a mixture into an extruder, and controlling the mixture to be extruded through a pushing machine to generate a mixed gel state of an organic matter and an inorganic matter; performing chemical foaming on the mixed gel state of the organic matter and the inorganic matter; carrying out high-temperature sintering on the mixed gel subjected to chemical foaming to remove the organic auxiliary agent in the mixed gel; and sleeving the outer conductor layer on the silicon dioxide layer subjected to high-temperature sintering, and drawing the outer conductor layer to form a tubular silicon dioxide insulating layer. The cable provided by the invention can meet the signal transmission requirements of equipment such as beam measurement low-temperature BPM and a superconducting cavity in an accelerator thermostat.

The present invention relates to a high-ratio foaming material and a preparation method thereof, comprising the following raw material components by weight: 90-100 parts of polylactic acid resin, 1-3 parts of glyceryl monostearate, 5-15 parts of a novel anti-shrinkage agent and 10-20 parts of a physical foaming agent; the physical foaming agent comprises a mixture of carbon dioxide and alkanes, and the ratio of the weight of the alkanes to the total weight of the physical foaming agent is greater than or equal to 0.2. The present invention adopts a mixing method of carbon dioxide and alkanes to prepare a physical foaming agent, which greatly reduces the shrinkage rate of the foaming product while increasing the foaming ratio of the foaming product.