315 results about "Closed cell" patented technology

The invention discloses hard carbon with a molecular sieve type closed-pore structure and a preparation method thereof.The preparation method comprises the steps that a biomass mixture such as cotton and crop waste serves as a raw material, or a mixture containing 70-90% of cellulose, 9-20% of hemicellulose, 1-10% of lignin and the like serves as a raw material, calcination is conducted at the temperature of 300-600 DEG C, and a pre-carbonized precursor is obtained; and then cleaning the precursor with an alkali solution, and finally carrying out secondary calcination at 900-1400 DEG C to obtain a hard carbon product with a molecular sieve type closed pore structure.

To provide a cooling heating instrument for providing a 'cooling comfortable temperature duration time' or 'heating comfortable temperature duration time' in which a cooling comfortable temperature or heating comfortable temperature lasts for a long time, by efficiently cooling or heating a human body affected part by inhibiting cooled air or heated air from being caused to diffuse to the outside by a cooling heating medium when being attached to the human body affected part.SOLUTION: A cooling heating instrument comprises: a surface member 2 that comprises foamed plastic material 20 including closed cell foamed plastic material having porous closed cells and / or open cell foamed plastic material having porous open cells and can be attached so as to cover a human body affected part; and a cooling heating medium 3 provided on the inner surface side of the surface member 2. The cooling heating instrument is configured so that when being attached so as to cover the human body affected part, the cooling heating medium 3 is positioned between the surface member 2 and the human body affected part and can cool or heat the human body affected part.SELECTED DRAWING: Figure 1

The invention provides a diaphragm and a preparation method thereof, and a lithium ion battery, the diaphragm comprises a base membrane, a composite ceramic coating and an interface layer, the composite ceramic coating contains inorganic ceramic particles and organic microcapsule particles, the organic microcapsule particles comprise a core material with a melting point range of 55-65 DEG C and a polymer shell coating the surface of the core material, and the polymer shell is coated on the surface of the core material. The polymer shell is selected from at least one of polyurethane, polyurea, polyamide and polycarbonate, the interface layer is formed by depositing an interface modification polymer on the surface of the composite ceramic coating, and the interface modification polymer is selected from at least one of polycatechol derivatives, polyaniline, polyvinyl pyridine, polyacrylic acid and polyacrylamide. The core material in the organic microcapsule particles is melted when heated to trigger hole closing at the initial stage of thermal runaway at 60-80 DEG C, the hole closing rate can reach 92%, the hole closing response time is shortened by 30%, and the porous structure of the interface layer can enhance the liquid absorption rate.

The invention discloses a foam particle reinforcement-based lightweight Dehua white porcelain sculpture and a preparation process thereof, and relates to the field of ceramics, the foam particle reinforcement-based lightweight Dehua white porcelain sculpture comprises white porcelain slurry and thermoplastic foam particles with closed pore structures, the matrix raw materials comprise the following raw materials in parts by weight: 60-70 parts of Dehua kaolin, 20-25 parts of quartz and 10-15 parts of feldspar, the water content of the white porcelain slurry is 25-30%, the volume ratio of the thermoplastic foam particles to the white porcelain slurry is 1: (0.2-0.5), and the thermoplastic foam particles are polystyrene or polyurethane particles. The oriented microporous structure is formed by the thermoplastic foam particles, so that the density of the white porcelain sculpture finished product is reduced to 1.2-1.8 g / cm < 3 >, the weight is reduced by 30-50% compared with the traditional white porcelain sculpture finished product, and the weight and the transportation and installation cost of the white porcelain sculpture finished product are greatly reduced.

Components for a gas turbine engine and method for producing the components are provided. The components may include a substrate and a thermal barrier coating (TBC) having at least a first layer secured to a surface of the substrate. The first layer is formed of a ceramic material with a first microstructure that includes a plurality of interconnected unit cells having struts that have a relative density of greater than 98 percent and a closed cell porosity of 10 percent or greater. The TBC is secured to the substrate subsequent to formation of the TBC.

A footwear and method of manufacture wherein the present invention includes capture and acquisition of a three-dimensional volumetric scan of feet of a user wherein the scan data is employed to manufacture a customized midsole for a sandal. The present invention includes a midsole that has an upper surface and a bottom surface wherein the upper surface is formed to mateably accommodate the hindfoot, midfoot and forefoot of the wearer. The midsole is manufactured from a cork-rubber blend in a preferred embodiment and includes a opposing side to which a strap member is secured thereto. The strap member has at least one strap segment configured to extend over the top of the wearer's foot. An outsole is secured to the bottom surface of the midsole. The outsole is manufactured from a closed cell polymer foam.

According to the homogeneous polymethacrylimide composite wave-absorbing material and the preparation method thereof provided by the invention, on one hand, the homogeneous polymethacrylimide composite wave-absorbing foam material adopts a copolymerizable foaming monomer to participate in copolymerization, so that the synthesized polymethacrylimide foam has a uniform polyhedral closed-cell structure; on the other hand, the wave absorbing agent is added, the wave absorbing agents with different structures and morphologies are selected to construct a gradient distribution structure to generate a synergistic effect, and the wave absorbing performance of the obtained homogeneous polymethacrylimide composite wave absorbing material is further improved in combination with the foam structure of the polymethacrylimide foam.

A house wrap for a building comprises a reinforcing drainage plane layer configured to face the outside of the building; a breathable, non-perforated barrier film bonded to the drainage plane layer; and at least one insulating layer including a perforated expanded low density polyethylene foam layer, wherein in the expanded low density polyethylene layer at least 80% of the blowing agents are dissipated from closed cells within the expanded low density polyethylene layer, forming evacuated closed cells whereby a partial vacuum is formed within the closed cells of the low density polyethylene layer.

An ultra-stable structural laminate with fire resistance and a lateral nail pull strength from 44 to 300 pounds of force and an insulation R value from 1 to 40, the ultra-stable structural laminate of a cementitious material with a nano-molecular veneer and a foam component catalytically reacted into an expanded closed cell foam having a thickness from ⅛th inch to 8 inches, a density from 1.5 pounds / cubic foot to 3 pounds / cubic foot that self-adheres to the cementitious material forming an ultra-stable structural laminate with fire resistance and a lateral nail pull strength from 44 pounds to 300 pounds of force, an insulation R value from 1 to 40, a resistance to seismic impact for earthquakes over 3.1 on the Richter Scale, a break point from 7 lbs / inch to 100 lbs / inch; and a resistance to wind shear equivalent to a 15 mph downburst.

The invention relates to a safe lithium battery diaphragm with a high-heat hole-closing function and a preparation method and application thereof, the lithium battery diaphragm is a composite membrane with a multilayer structure, and comprises a bacterial nano cellulose membrane and a composite layer with the heat hole-closing function; wherein the composite layer is prepared from a hot melting material and bacterial nano cellulose. Compared with a traditional commercial polyolefin diaphragm, the lithium battery diaphragm provided by the invention not only has the characteristics of natural three-dimensional nano network structure, good thermal stability, high liquid absorption rate, high ionic conductivity and the like, but also has thermal closed pores and an optional flame-retardant function, so that the safety of a lithium battery is greatly ensured, and the lithium battery diaphragm has a good market application prospect.

An expanded bead of polypropylene-based resin formed with a through hole that is defined by an inner peripheral surface and that has an average hole diameter of 1 mm or less. The expanded bead has a closed cell content of 85% or more, an average cell diameter of 50 to 300 μm and an inner surface portion that extends along the inner peripheral surface that has an average cell diameter of 5 to 150 μm which is smaller than the average cell diameter of the expanded bead.

The utility model discloses a quadrangle slope roof which comprises a roof tile layer, a horizontal tile cushion layer, a protection layer, a waterproof isolation layer, a waterproof layer, a leveling layer, a moisture-proof heat preservation layer, an anti-corrosion layer and a base layer which are sequentially arranged from top to bottom, the moisture-proof heat preservation layer is made of an extruded polystyrene board, the percentage of closed area of the extruded polystyrene board reaches more than 90%, and the extruded polystyrene board has good heat insulation performance. Compared with the prior art, the extruded polystyrene board can effectively relieve heat transfer, so that the good heat preservation, energy saving and environment protection effects are achieved, the 1: 3 cement mortar leveling layer is arranged above the extruded polystyrene board for leveling, the waterproof layer is convenient to install, the compactness of the waterproof layer is improved, the waterproof layer is made of a double-layer self-adhesive tyred SBS modified asphalt waterproof roll with the thickness of 3 + 3 mm, and the waterproof effect is good. The waterproof isolation layer is a low-grade mortar isolation layer, and the low-grade mortar isolation layer is matched with the double-layer self-adhesion type tire SBS modified asphalt waterproof coiled material, so that the waterproof and fireproof performance of the slope roof can be greatly improved, and the situation of roof water leakage can be effectively avoided for a long time.

A ventilated seat includes a cushion pad, including a plurality of air distribution holes therethrough, and having a hook-loop fastener affixed thereto; a seat bottom including a main bottom cushion; a seat back operatively engaging the seat bottom and including a main back cushion; wherein one of the main bottom cushion and the main back cushion is comprised of a closed cell foam, includes a recess that is shaped to receive and orient the cushion pad therein, a ventilation passage for directing airflow from a climate control system to the recess, and a hook-loop fastener molded into the closed cell foam in the recess; and wherein the cushion pad is secured in the recess by the hook-loop fastener of the cushion pad operatively engaging the hook-loop fastener in the recess.

A closed cell culture device with high gas permeability and a method. The culture device comprises: a base; a reactor housing, which is arranged above the base and is connected to the base to form a sealed cavity; a gas exchange assembly, which is arranged above the base and is in communication with the sealed cavity; a first liquid exchange assembly, which is arranged above the reactor housing and is connected to the reactor housing; and a second liquid exchange assembly, which is arranged on the side wall of the reactor housing and is in communication with the sealed cavity. A filter is provided in the first liquid exchange assembly, a filter membrane is provided in the filter, and the filter membrane is built in the filter in a folded or stacked manner; and the gas permeation rate of the filter is 5-30 L / min, and the membrane area of the filter membrane is larger than 2700mm 2. The method solves the problem that a bottom silicone breathable membrane will bulge due to negative pressure when a culture medium is extracted, and the problem of a complicated apparatus caused by discharging the culture medium in a positive pressure manner.

The present application relates to the technical field of foamed shoe sole material, in particular to a high-resilience foamed shoe sole material and a preparation method thereof. The material is prepared by molding a blank from a foaming composition and supercritical carbon dioxide kettle foaming, wherein the foaming composition comprises 100 parts by mass of high-melt-strength polypropylene and 38-45 parts by mass of an elastomer component, the elastomer component is composed of micro-crosslinked polyolefin elastomer microparticles with a gel fraction of 40-70% and uncrosslinked polyolefin elastomer, and the microparticles account for 60-80% of the total mass of the elastomer component; the blank molding is performed at 180-190 DEG C to complete the interface bonding of the microparticles and the matrix. The apparent density of the material is 0.11-0.13 g / cm 3 , the closed cell rate is not less than 90%, the ball drop resilience is more than 60%, and the material has high resilience, light weight and compression resistance.

To provide a cell proliferation system, proliferation method, control method, and culture medium bag capable of proliferating various adherent cells and suspension cells. [Solution] Cells are grown in a bioreactor and activated by an activator (e.g., a soluble activator complex). The nutrient supply and gas exchange functions of an automated closed cell proliferation system make it possible to seed at, for example, a low seeding density. By manipulating the parameters of the cell growth environment, cells are placed in specific locations within the bioreactor for efficient exchange of nutrients and gases. System parameters are adjusted to shear any cell colonies that may form during the proliferation phase. Metabolic concentrations are controlled to improve cell growth and viability. Cell retention within the bioreactor is controlled. In some embodiments, the cells include T cells. In other embodiments, the cells include a T cell subpopulation, for example, regulatory T cells (Tregs).

The utility model relates to the field of cell culture, and provides a closed cell culture device. The closed cell culture device comprises a first accommodating body, a second accommodating body, a pump body and a sterile pipeline on-off assembly, wherein the first accommodating body is connected with a first pipeline and is used for cell culture; the second accommodating body is connected with a second pipeline and is used for accommodating a culture medium or cell culture, and the second pipeline is connected with the first pipeline in an on-off manner; the pump body is used for extruding the outer pipe wall of the first pipeline and / or the outer pipe wall of the second pipeline; the sterile pipeline on-off assembly is used for adjusting the first pipeline and the second pipeline to be switched between a pipeline connection state and a pipeline disconnection state; the pump body is used for pumping the culture medium into the first accommodating body from the second accommodating body under the condition that the second accommodating body is used for accommodating the culture medium, and the pump body is used for pumping the cell medium in the first accommodating body into the second accommodating body under the condition that the second accommodating body is used for cell culture. The closed cell culture device is low in environment requirement and low in culture cost.

The invention relates to the technical field of polyurethane foam preparation, and discloses polyurethane foam for a heat insulation strip and a preparation method of the polyurethane foam. The polyurethane foam is prepared from the following raw materials in parts by weight: 40 to 60 parts of polytetrahydrofuran ether glycol, 10 to 15 parts of modified monomer, 1 to 5 parts of ethylenediamine, 1 to 5 parts of hydroxyethyl methylacrylate, 60 to 80 parts of diphenylmethane diisocyanate, 3 to 5 parts of modified filler, 0.3 to 0.5 part of benzophenone and 10 to 15 parts of n-pentane. Double bonds on hydroxyethyl methylacrylate can react with sulfydryl on the surface of the modified filler, then a cross-linked network is formed in the material, the foam structure is more uniform and stable by limiting molecular chain movement and reducing gas diffusion and heat conduction paths, and the closed-cell rate of the foam can be increased by matching with a multi-layer coated hollow structure of the modified filler, so that the thermal conductivity of the foam is improved. And gas diffusion is reduced, so that the long-term stable heat insulation effect is maintained.

An article and a method of manufacturing soft seating comprises a rigid, injection-molded thermoplastic substrate are disclosed. The soft seat article comprises an injection molded structural substrate element that may be over-molded with soft open cell polyurethane or other open or closed cell foam materials to create a soft chair. The soft foam outer surface may be upholstered with fabric or other traditional materials to finish the soft chair. The method of manufacturing comprises molding an inner structural shell from thermoplastic materials, encapsulating the inner structural shell in a soft foam material, optionally upholstering the outer surface of the soft foam material, and optionally providing a base

The invention relates to a medical device for treating aneurysms, in particular a stent, including a compressible and expandable grid structure made up of grid elements. The grid structure has at least one closed cell ring which includes at most 12, in particular at most 10, in particular at most 8, in particular at most 6 cells directly adjacent to one another in a circumferential direction of the grid structure. The grid structure is provided at least in certain portions with a covering made of an electrospun fabric which has pores of irregular sizes. The covering includes over a surface area of 100 000 μm2 at least 10 pores which have a size of at least 15 μm2. The covering has a biocompatible, in particular antithrombogenic and / or endothelialization-promoting coating.

The invention belongs to the field of refractory materials, and provides a light heat-insulating refractory brick and a preparation method thereof. The light heat-insulating refractory brick comprises particles, mixed powder and an additional binding agent, the particles comprise, by weight, 10-15 parts of expanded vermiculite and 30-45 parts of closed cell perlite, and the mixed powder comprises, by weight, 15-25 parts of spherical quartz powder and 5-15 parts of perlite dust collecting powder. The raw materials comprise, by weight, 5-10 parts of waste silica brick powder, 5-10 parts of siliceous pyrophyllite powder, 10-15 parts of Jiaozhou white clay, 5-15 parts of sodium montmorillonite powder and 5-15 parts of limonite powder; the additional binding agent comprises the following raw materials in parts by weight: 3-5 parts of binding slurry and 3-5 parts of pre-gelatinized starch. The refractory brick disclosed by the invention is a light heat-insulating refractory brick which is small in volume density, small in heat conductivity coefficient and capable of meeting the requirement of heat insulation in a high-temperature kiln at 900-1000 DEG C in normal-temperature compressive strength.

The invention belongs to the technical field of thermal insulation foaming materials, and particularly relates to an in-situ closed-cell foaming material as well as a preparation method and application thereof. The in-situ closed-cell foaming material is prepared from the following raw materials through foaming and curing reactions: 40-60 parts by weight of a melamine prepolymer; 40 to 60 parts by weight of isocyanate; 1-5 parts by weight of a hydrolysable silane compound; 0.05 to 0.3 part by weight of a catalyst; 5-15 parts by weight of an inorganic cementing material; 1-10 parts by weight of a physical foaming agent; the content of bound water in the melamine prepolymer is 2.0 to 5.0 weight percent. The in-situ closed-cell foaming material provided by the invention has excellent thermal insulation performance, high specific strength and excellent waterproof, moisture-proof and anti-seepage performance, and the combustion performance grade is A2.

To provide a rubber for metal removal that is usable for removing molten metal from a heating tool without water wetting and that enables easy removal of metal remaining on a surface, and to provide an isolated-cell rubber serving as a base for the same and a method for producing the isolated-cell rubber.SOLUTION: An isolated-cell rubber 10 (or isolated-cell rubber) including a cured silicone rubber 11, wherein a plurality of isolated cells 13, each having at least one particle 12 disposed inside, are formed in the cured silicone rubber 11, and a water-soluble substance is dispersed therein.SELECTED DRAWING: Figure 1

The present disclosure relates to physically crosslinked closed cell continuous multilayer foam structures comprising at least one foamed polypropylene / polyethylene layer having a TPU overlay. A multilayer structure comprising at least one layer of a foam composition and at least one layer of a cover composition may be co-extruded, the co-extruded structure is irradiated with ionizing radiation, and the irradiated structure is continuously foamed.

This invention relates to the field of aluminum foam technology and discloses a method for producing closed-cell aluminum foam by blowing, comprising the following steps: (1) raw material preparation; (2) aluminum melt preparation; (3) foam stabilizer mixing; (4) blowing foam; (5) cooling and shaping. This invention forms a closed-loop control system throughout the entire process by orderly coordinating key links such as coating foam stabilizer, melt purification and activation, pre-dispersion mixing, dynamic temperature and pressure foaming, and gradient cooling and shaping: the coating foam stabilizer provides a stable bubble core, the purified and activated melt provides a strong pore wall matrix, pre-dispersion and composite stirring ensure uniform distribution of bubbles throughout the entire area, dynamic temperature and pressure and vibration achieve precise bubble growth, and gradient cooling ensures a stable final structure without cracks. Each step supports and reinforces the others, forming a continuous, uniform, and complete closed-cell network inside the aluminum foam, significantly improving the closed-cell rate, pore size uniformity, and compressive mechanical properties.

The application provides a shell-shaped product with a cavity, a forming die and a preparation process, wherein the shell-shaped product comprises a main body part, the main body part comprises a bottom wall, a side wall and an opening opposite to the bottom wall, the bottom wall and the side wall are combined to form the cavity, the opening is connected with the cavity and an external space of the shell-shaped product, the main body part is integrally formed by a thermoplastic elastomer base material mixed with a supercritical fluid through a supercritical injection foaming forming process, and the closed cell rate of the main body part ranges from 10 to 99%, and the pore diameter ranges from 20 to 300 microns. The supercritical foaming process is adopted to realize the integral forming of the shell-shaped product, the process is simple, and production is efficient; the upper limit of the high closed cell rate and the micron-level pore diameter distribution can further improve the mechanical strength of the foaming material, and the obtained shell-shaped product can simultaneously have the characteristics of ultralow self-weight, natural waterproofness and strong mechanical performance, thereby providing a new idea for the manufacturing of products such as bags and the like.

Foam compositions comprising an inorganic resin matrix or a polymer-derived ceramic matrix are provided, as well as methods of fabricating the same. The foams may or may not contain additional functional fillers to control mechanical and / or thermophysical properties. The foam materials can include a novel combination of tailorable inorganic siloxane resins with unique fillers, and unique methods of producing the desired porosity. Unlike related art foams, the foams of embodiments of the subject invention can be inorganic-resin-based, and can be closed cell foams or semi-closed cell foams.

An electrochemical device and an electronic device comprising the electrochemical device. The electrochemical device comprises an electrode plate and an isolation layer (10) on at least one surface of the electrode plate, wherein the isolation layer (10) comprises a nanofiber porous matrix (101) and polymer particles (102) distributed in the nanofiber porous matrix (101), and the melting temperature of the polymer particles (102) is 70°C to 150°C. Compared with the prior art, since the isolation layer (10) has low-melting-point polymer particles (102) distributed in the nanofiber porous matrix (101), the isolation layer (10) has a low-temperature thermal pore-closing function, and can cut off the current under thermal runaway to improve the safety performance of the electrochemical device. The low-melting-point polymer particles (102) are filled in the "macropores" of the fiber porous matrix to reduce the macropores, thereby further improving the self-discharge problem of the electrochemical device and reducing the K value, while reducing the internal short circuit problem of the positive and negative active material particles in the electrochemical device piercing the isolation layer (10), which is also conducive to improving the electrical performance of the electrochemical device such as the cycle.

A highly-breathable closed cell culture device includes: a base; a reactor housing, located above the base and connected to the base to form a closed chamber; a gas exchange assembly, located above the base and communicated with the closed chamber; a first liquid exchange assembly, located above the reactor housing and connected to the reactor housing; and a second liquid exchange assembly, located on a side wall of the reactor housing and communicated with the closed chamber. A filter is provided in the first liquid exchange assembly, and a filtration membrane is built in the filter in a folded or stacked manner. A gas permeation rate of the filter is 5 L / min-30 L / min, and an area of the filtration membrane is greater than 2,700 mm2. The culture device solves the problems that the bottom breathable silicone membrane bulges due to negative pressure when pumping the culture medium.

The invention discloses a high-flame-retardant EVA (Ethylene Vinyl Acetate) foaming material and a preparation method thereof, and relates to the technical field of high polymer materials. The high-flame-retardant EVA foaming material is prepared from a coated functional filler, a nitrogen-doped graphene-like carbon / cobalt nano composite material, EVA, stearic acid, zinc stearate, zinc oxide, a foaming agent AC and dicumyl peroxide, a core-shell combined filler composed of a coated functional filler and a nitrogen-doped graphene-like carbon / cobalt nano composite material is uniformly distributed in an EVA three-dimensional network cross-linked matrix to form a porous material with a uniform closed cell structure, so that the flame retardant property is improved by virtue of a physical barrier effect and a catalytic carbon formation mechanism, and an efficient and stable conductive network is also constructed; the antistatic performance is optimized, and the application range of the EVA foaming material is widened.