11 results about "Nanofoam" patented technology

The application provides a foam stabilizer raw material system, a method for preparing a nano stable foam agent, the nano stable foam agent and application. The raw material system comprises inorganic nanoparticles, an organic monomer, an initiator, a catalyst and a hydrophobic modifier; wherein the organic monomer has an electrically neutral hydrophilic group. According to the technical scheme of the application, the foam stabilizer prepared from the system is composed of nanoparticles, which not only have hydrophobic groups and can have hydrophobic interaction with the tail of a foaming agent, but also have electrically neutral hydrophilic polymer groups on the particles, which can play a role in temperature resistance and salt resistance on one hand; on the other hand, compared with some anionic polymers, such as 2-acrylamido-2-methylpropane sulfonic acid sodium polymer, the electric charge repulsion with the head group of a surfactant can be reduced or avoided, the adsorption of the nanoparticles on the gas-liquid interface is promoted, and then the stability of the foam is improved.

To provide a new method for producing a resin foam, and a resin foam produced by the method.SOLUTION: A method for producing a nano foamed polymer includes: arranging a first resin where first gas is dissolved under atmosphere containing first gas and second gas reducing surface tension of the first resin (step S10); then performing pressurization of raising a partial pressure of the first gas and a partial pressure of the second gas in the above-described atmosphere (step S20); and then lowering the partial pressure of the first gas and the partial pressure of the second gas in the above-described atmosphere (step S30). In the step S20, for example, the pressure of the atmosphere is raised, and in the step S30, for example, the pressure of the atmosphere is lowered.SELECTED DRAWING: Figure 1

A facile method is based on a pack-cementation process using large-area copper foil instead of copper powder. By controlling a pack-cementation time and an amount of alloying element (e.g., aluminum), a hierarchical microporous or nanoporous copper can be created. When coated with tin active material, the hierarchical microporous or nanoporous copper can be used as an advanced lithium-ion battery anode. A coin-cell test exhibited a four-fold higher areal capacity (e.g., 7.4 milliamp-hours per square centimeter without any performance degradation up to 20 cycles) as compared to a traditional graphite anode.

The utility model discloses a kind of nano bubble sand mixing devices for reinforced foam fracturing fluid, including nano foam fracturing fluid sand mixing device and the nano bubble generator of being communicated by gas guide pipe, the manifold of external water-based fracturing fluid is communicated and arranged in the top of nano foam fracturing fluid sand mixing device, the inside of nano foam fracturing fluid sand mixing device is equipped with stirring structure, the axis of gas guide pipe is 30 °-45 ° inclined setting with the lateral wall of nano foam fracturing fluid sand mixing device.In the scheme, nano foam fracturing fluid sand mixing device and nano bubble generator are directly communicated by gas guide pipe, cooperate the manifold of external water-based fracturing fluid and form integrated online sand mixing structure, realize that fracturing base fluid and gas directly generate nanometer stable foam in nano foam fracturing fluid sand mixing device and complete sanding operation simultaneously, make sand-carrying fluid keep high sand concentration and foam stability, simplify the multistage processing flow of traditional foam fracturing.

A polymeric nanofoam includes a plurality of nanocells, wherein the average diameter of the nanocells is less than 200 nm, and the number of nanocells is higher than 1013 cells / cm3. The polymeric nanofoam is formed of polymethyl methacrylate (PMMA) and has a flat area greater than 50 cm2, a thickness greater than 5 mm, and a relative density less than 0.5. A method for fabricating the polymeric nanofoam is also disclosed herein.

The invention discloses a high-concentration micro-nano foam preparation device and a preparation method thereof.The device comprises a liquid storage tank, a conveying pump, a micro-nano foam preparation unit and a micro-nano foam separation and recovery unit, a first bottom barrier plate is arranged in the liquid storage tank, and the micro-nano foam preparation unit is connected with the conveying pump and arranged on the side edge of the liquid storage tank; and the micro-nano foam separation and recovery unit is integrated at the upper part of the liquid storage tank and comprises a second barrier plate, a micro-nano foam collection tank, a foam overflow plate and a foam discharge liquid return pipe. The micro-nano foam separation and recovery unit is arranged, foaming liquid separated out through the foam overflow plate and the foam discharge liquid return pipe by means of the gravity liquid discharge effect is guided back to the liquid storage tank, gas-liquid separation is effectively achieved, and the dryness and concentration of discharged foam are remarkably improved. The device is compact in structure, low in energy consumption, large in dry density and suitable for industrial large-scale production, and the particle size of the prepared micro-nano foam is concentrated at 1-10 microns.

Catalyst compositions, methods of making a bimetallic nanofoam catalyst composition, and methods of catalyzing a reaction are described. In an example, the catalyst comprises a nanofoam comprising plurality of intertwined nanowires comprising two or more metals. In an example, the nanofoam comprises a three-dimensional interconnected nanonetwork comprising the plurality of intertwined nanowires. In an example, the nanofoam is an aerogel comprising the plurality of intertwined nanowires. In an example, the nanofoam is self-supported, such as where the catalyst composition does not comprise a substrate supporting the nanofoam.

A facile method is based on a pack-cementation process using large-area copper foil instead of copper powder. By controlling a pack-cementation time and an amount of alloying element (e.g., aluminum), a hierarchical microporous or nanoporous copper can be created. When coated with tin active material, the hierarchical microporous or nanoporous copper can be used as an advanced lithium-ion battery anode. A coin-cell test exhibited a four-fold higher areal capacity (e.g., 7.4 milliamp-hours per square centimeter without any performance degradation up to 20 cycles) as compared to a traditional graphite anode.

The invention discloses a foam concrete composite material as well as a preparation method and application thereof, and relates to the technical field of light materials. The foam concrete composite material comprises a foam concrete material and carbon fiber cloth coating the surface of the foam concrete material, the foam concrete material is prepared from the following components in parts by mass: 200 to 500 parts of a cementing material, 3 to 25 parts of polymer fiber, 20 to 40 parts of nano foam and 100 to 500 parts of water. According to the foam concrete composite material, the light characteristic of foam concrete is guaranteed, and meanwhile the compressive strength and durability of the foam concrete composite material are remarkably improved, so that when the foam concrete composite material is used as a building material, the safety is also improved, and the foam concrete composite material is suitable for the field of buildings.

The invention relates to a foam concrete material capable of quickly responding to a dry environment and a prefabricated slab. The high-strength concrete is prepared from the following raw materials in parts by mass: 300 to 600 parts of cement, 150 to 300 parts of blast furnace slag, 20 to 50 parts of anhydrous calcium sulfate, 50 to 200 parts of micro-active aggregate, 7 to 10 parts of polypropylene fiber, 5 to 7 parts of polystyrene fiber, 100 to 300 parts of regenerated micro powder, 0.2 to 1 part of nano foaming agent, 2 to 6 parts of polycarboxylate superplasticizer mother liquor, 10 to 50 parts of AFt seed crystal and 0.1 to 0.2 part of hydroxypropyl methyl cellulose. According to the foam concrete prefabricated slab, part of cement is replaced by the recycled micro powder and the slag, and meanwhile, the micro-active aggregate is compounded with the AFt seed crystal, so that the problem that the shrinkage period of the foam concrete prefabricated slab is long is effectively solved, the utilization rate of solid waste resources is also increased, and the problem that the strength of foam concrete in the prior art is relatively low is solved.

The application discloses a degradable nanometer foam filter material for cigarettes and a preparation method thereof. The inventor selects whole biomass wood fiber and hydrogel with a nano structure as a filter material matrix to realize complete degradation of the material. The polar functional groups and nano structure of the material are used to realize efficient adsorption of harmful particles in a physical and chemical way, and the original taste of cigarettes is reserved. The wood fiber itself has a natural nanometer tubular structure and shows strong adsorption capacity. The wood fiber is in-situ cross-linked and polymerized with hydrogel with a three-dimensional network structure to form a type, and the wood fiber is wound and interpenetrated to complement each other. The wood fiber is a kind of strong and stable high-efficiency filter material. The toughness and water resistance of the three-dimensional network structure are further improved by boric acid treatment on the wood fiber and the hydrogel. The material in the technical scheme is safer and more environmentally friendly, harmful additives are not added in the processing process, and secondary pollution of the material is avoided.