158 results about "Expanded polystyrene" patented technology

The invention relates to the technical field of expanded polystyrene production, and discloses an expanded polystyrene automatic molding control system and method.The system comprises a detection module, a data analysis module and a central control module, and the detection module collects mold temperature distribution, molded blank local density and steam pressure data in real time; the data analysis module calculates a temperature fluctuation index according to the temperature data, obtains a dynamic density compensation coefficient by means of a density model, and determines a forming quality deviation level; and the central control module adjusts the steam heating power according to the deviation level, determines and corrects the mold opening and closing rate in combination with the pressure and density change rate, and generates a motion trail control parameter. The method comprises the steps of data acquisition, calculation and analysis, parameter adjustment and instruction output. Through multi-parameter cooperative control, forming automation and precision are achieved, the quality stability and the production efficiency are improved, and the method is suitable for production of related products.

Building techniques and structures to fabricate components of expanded polystyrene (EPS) for assembly into a building include structures and ways to make keys to provide shear strength between components, structures and ways to minimize infiltration paths between walls and floors and walls and roof while reducing labor, material wastage and logistics complications. By way of example, components are strategically cut from a block of EPS using a hot wire moving through the block to cut components to a desired and novel configuration.

The invention relates to the technical field of layered composite materials, in particular to a flame-retardant wave-absorbing material based on expanded polystyrene and a preparation method of the flame-retardant wave-absorbing material. The preparation method comprises the following steps: compounding a graphene azide / ferroferric oxide composite material and propargyl linear phenolic resin through a click chemical reaction, compounding the obtained wave absorbing agent with phenolic resin, flame-retardant functional phenolic resin and ammonium polyphosphate to form flame-retardant coating resin, mixing the flame-retardant coating resin with pre-foamed polystyrene beads, and performing secondary foaming to obtain the flame-retardant polystyrene composite material. And taking the expanded polystyrene-based composite material as a middle layer, and carrying out composite hot pressing on the expanded polystyrene-based composite material, the upper layer and the lower layer to obtain the flame-retardant wave-absorbing material based on expanded polystyrene. The composite material has excellent flame retardant property and wave absorbing property.

A building assembly includes a plurality of expanded polystyrene wall panels, headers, sill panels, U blocks, U block caps, roof panels, and connectors. Each U block includes rebar and at least one of concrete and cementitious material in a recess or void therein. Each U block cap when joined to the U block creates an enclosed void in the U block which holds the rebar and concrete and / or cementitious material. A plurality of capped U blocks joins a plurality of wall panels, headers, and sills to form a wall structure. A plurality of U blocks are placed on a top surface of the wall structure. A roof assembly including a plurality of U blocks, H connectors, T connectors, and combinations thereof connected to roof panels to form a rigid roof assembly. A coating of cementitious material provides additional structural rigidity and resistance to impact, fire, water, mold, mildew, and insects.

Disclosed is a system and method for sealing an opening through the boundary of a controlled thermal and gaseous environment such as an incubator or refrigerator, where conduit channels of arbitrary size and number are transferred across the boundary. A silicone or polymeric tube with flanges at either end is passed through the boundary opening, fixing one side to the boundary wall and attaching the other to a mechanism that controls or constrains the rotation of the tube. This is achieved by rotating or twisting one end of the tube, creating a hyperboloid-like structure that will seal around the conduits and thereby seal the opening. To further improve thermal efficiency, insulating material such as expanded polystyrene beads are placed into the space between the silicone or polymeric tube and the wall of the incubator, providing thermal stability that cannot be achieved by conventional conduit transferring methods.

The present disclosure relates to a prefabricated block composed of Autoclaved Aerated Concrete (AAC), widely used in civil construction, offering mechanical improvements such as heat resistance, increased pull-out strength, sound absorption, and reduced mass, as well as ease of installation. The invention comprises a rigid self-supporting block (1), made up of two AAC panels (2), two reinforcing glass fiber meshes (3), with said panels (2) enclosing an expanded polystyrene (EPS) core (4), and a micro-concrete layer (C) applied around the entire perimeter of the block (1). In an alternative embodiment, the AAC may be replaced by foamed cellular concrete.

The invention discloses a fabricated light thermal insulation wallboard and a preparation process thereof, and relates to the technical field of light thermal insulation wallboards, the preparation process comprises the following steps: adding a water reducing agent into deionized water, uniformly stirring, adding cellulose ether, and uniformly stirring to obtain a cellulose ether solution; adding the polyimide hybrid aerogel and a surfactant into a cellulose ether solution, and uniformly stirring to obtain an aerogel cellulose ether solution; cement, silica fume, fly ash and hollow glass beads are stirred uniformly, the aerogel cellulose ether solution is added and stirred uniformly, expanded polystyrene particles are added and stirred uniformly, the mixture is poured into a mold, and vibration, demolding and maintenance are performed to obtain the light thermal insulation wallboard.

The invention discloses a light internal partition wall board and a preparation process thereof, and belongs to the technical field of building materials. The light internal partition wall board is prepared from the following main raw material components in parts by mass: 500 to 700 parts of slag washed sand, 1400 to 1600 parts of cement, 40 to 50 parts of flame-retardant light filler, 10 to 24 parts of flame retardant, 15 to 60 parts of air entraining agent, 8 to 24 parts of water reducing agent and 330 to 750 parts of water. Wherein the flame-retardant light filler is obtained by sequentially reacting expanded polystyrene particles with bis (pinacolato) diboron, 4-bromo-3-isopropyl benzoic acid and triisopropyl phenyl phosphate; the water reducing agent is prepared from polyvinyl alcohol; the prepared light internal partition wall board is high in compressive strength, good in fire resistance and light in mass.

High impact and penetration resistant lightweight composite panels include a foam core and an impact and penetration resistant protective layer on at least a portion of the lightweight composite panel. The foam core is a polymer and / or inorganic foam layer or sheet having first and second surfaces. A fiber mesh reinforced cementitious layer can cover one or both surfaces of the foam core. Example polymer foam cores include extruded polystyrene foam, expanded polystyrene foam, polyisocyanurate foam, or polyurethane foam. Example inorganic foam cores include perlite, ceramic microspheres, hollow glass spheres, glass foam, ceramic foam, expanded silica gel, porous wollastonite, urea-silicate foam, SiOC / SiC foam, refractory foam, and graphene. The impact and penetration resistant protective layer can be formed from polyurea, polyurethane, polyurea-polyurethane hybrid, polyaspartic, polymer-modified mineral binder, or hybrid resin-mineral composite. The protective layer can include a tightly woven scrim and / or a slip resistant filler embedded in the polymer.

The invention discloses a porous GNP / PDMS composite material, a preparation method thereof and application of the porous GNP / PDMS composite material in a flexible sensor, and belongs to the technical field of flexible sensors and preparation of the flexible sensors. According to the preparation method, expanded polystyrene microspheres are taken as sacrificial templates to be combined with glucose, a spherical pore structure is constructed through a vacuum infiltration method, graphene is dispersed in a PDMS matrix by adopting a multi-step ultrasonic dispersion technology, and porous GNP / PDMS composite materials with different graphene contents are obtained. On the basis, a conductive electrode and a flexible packaging layer are combined to construct a high-sensitivity flexible sensor. Results show that the GNP / PDMS composite material containing 4 wt.% of graphene shows excellent mechanical properties, the elastic modulus is 2.43 MPa, the maximum tensile strength is 1.46 MPa, meanwhile, the recovery of more than 99.6% is maintained after 200 times of compression cycles, and the composite material shows very strong mechanical stability.

The utility model belongs to the field of heat preservation structures, particularly relates to a building energy-saving heat preservation structure, and aims to solve the problems that a plurality of L-shaped clamping blocks are connected one by one in the prior art, the connectivity between heat preservation structures is poor, and the integrality is low, and provides the following scheme that the building energy-saving heat preservation structure comprises a wall body, and a cement leveling layer is arranged on one side of the wall body; an adhesion layer is arranged on one side of the cement leveling layer, a plurality of expanded polystyrene boards are arranged on one side of the adhesion layer, second reinforcing layers are arranged on one sides of the expanded polystyrene boards, the same glass wool fireproof layer is arranged on one sides of the second reinforcing layers, a first reinforcing layer is arranged on one side of the glass wool fireproof layer, and a second reinforcing layer is arranged on one side of the first reinforcing layer. The building energy-saving heat preservation structure has the advantages that the building energy-saving heat preservation structure has remarkable advantages in the aspects of heat preservation performance, structural stability, crack resistance, waterproof performance, construction convenience, environmental protection sustainability and the like, and a new solution is provided for energy conservation and heat preservation of modern buildings.

To solve a problem on an electronic device manufacturing line in which a conventional broadband flat radio wave absorber is affected by reflection from a coating resin in the millimeter wave band, and external vibration or contact can cause carbon or ferrite powder dust to separate and fall from the radio wave absorber.SOLUTION: One side of a cover layer made of an open-cell foamed resin is impregnated with an adhesive, one side of an absorbing layer made of closed-cell or open-cell foamed resin with carbon powder or ferrite powder dispersed therein is coated with the adhesive, and the adhesive-impregnated side of the cover layer and the adhesive-coated side of the absorbing layer are joined together. The foamed resin of the cover layer and the absorbing layer is polystyrene foam, polyurethane foam, or polyethylene foam, and the adhesive is an acrylic adhesive, silicone adhesive, urethane adhesive, or rubber adhesive.SELECTED DRAWING: Figure 1

The present application relates to the field of foaming materials, in particular to an expandable polystyrene containing expandable graphite and a preparation method thereof. An expandable polystyrene containing expandable graphite comprises the following raw materials in parts by weight: 80-100 parts of a polymer substrate, 1-8 parts of a liquid material, 0.1-1 parts of a coating agent, 5-30 parts of a modified carbon material, 1-3 parts of a nucleating agent, 0.5-1 parts of a plasticizer, and 0.5-1 parts of a stabilizer; the modified carbon material is prepared by modifying a carbon material with an epoxidized styrene-butadiene block copolymer. The thermal conductivity of the obtained expandable polystyrene material is ≤0.033 W / m•K, the bending strength can reach 2.90-3.26MPa, the tensile retention rate can reach 80.0-90.8%, and the limiting oxygen index can reach 35.1-38.7%.

The utility model relates to a system for reducing expanded polystyrene (EPS) in a safety helmet. The system comprises a safety helmet crushing device, a screening device, a stirring device and a separating device, the method comprises the following steps: firstly, primarily crushing a safety helmet by using a safety helmet crushing device, then screening fragments of foamed polystyrene by using a screening device, and removing smudginess or foreign matters. The processed expanded polystyrene fragments in the safety helmet are conveyed to the stirring device to be subjected to a volume reduction chemical reaction with the liquid solvent, so that the volume is greatly reduced. Through multiple treatments of crushing, screening and the like, smudginess is gradually removed, expanded polystyrene resources in the waste safety helmets are reduced and recycled, and compared with a traditional method, the energy-saving effect is achieved.

System suitable for storing and / or transporting temperature-sensitive materials. In a preferred embodiment, the system may include a cooler made of expanded polystyrene foam. The cooler may include a base and a lid. The base may be a unitary structure that includes a cavity bounded by a bottom wall and four side walls. The base also may include an integral support that may include a platform elevated from the bottom wall, as well as a stanchion extending upwardly from the bottom wall along each of the side walls. The support may be constructed to removably receive a product box in the cavity and to orient the product box at an angle offset from the cavity. Dry ice pellets may be positioned around and under the product box, and additional dry ice pellets may be positioned in a tray mounted on the stanchions over the product box.

The invention relates to the technical field of production of chemical materials, and particularly discloses a production process and application of micron-level fatty glyceride fine powder, the production process comprises the following steps: heating and dissolving monoglyceride or triglyceride, fully stirring, conveying to a head tank through a pipeline, keeping the liquid level stable, conveying to a centrifugal spray head, and drying to obtain the micron-level fatty glyceride fine powder. And treating by a high-speed centrifugal rotor to form fine liquid drops, cooling into small particles by cold air input by an air cooler, cooling in a centrifugal drying tower to obtain an intermediate, standing, fully cooling, and sieving to obtain micron-grade fine powder. The invention also provides an application of the fine powder in an expanded polystyrene ultrafine powder coating agent, the coating agent is prepared from monoglyceride, triglyceride, zinc stearate, EBS ethylene bis stearamide and silicon dioxide in specific parts by mass, and the coating agent is produced by adopting a zero-gravity dry mixing method. The particle size of the produced fine powder reaches 75 micrometers or below, the particle size D50 of a finished product is about 50 micrometers, the fine powder can be evenly coated on EPS particles, powder falling is not prone to occurring, and the processing efficiency and the product performance of the EPS industry are improved.

The present invention relates to the technical field of foamed polystyrene composite materials, and in particular to an antistatic and flame-retardant polystyrene composite material and a preparation method and application thereof. The present invention provides an antistatic and flame-retardant polystyrene composite material, wherein the raw materials for preparation include graphite nanosheets modified by sodium dodecylbenzene sulfonate; the amount of the graphite nanosheets modified by sodium dodecylbenzene sulfonate in the antistatic and flame-retardant polystyrene composite material is 1 to 8 wt %. The graphite nanosheets modified by sodium dodecylbenzene sulfonate can make the preparation process of the antistatic and flame-retardant polystyrene composite material simple and green.

The invention relates to the technical field of mountaineering helmet production processes, in particular to a simple mountaineering helmet production process which comprises the following steps: (1) preparing raw materials including 80-83 parts by weight of foamed polypropylene (EPP); 17 to 20 parts by weight of expanded polystyrene (EPS); 1 to 5 parts by weight of polycarbonate (PC); (2) carrying out EPP main body molding: a) injecting EPP particles into a mold; b) injecting steam, heating and pressurizing to expand and fuse the EPP particles; c) cooling until forming; d) opening the mold and taking out the EPP main body; (3) EPS inner layer forming and PC outer layer forming are conducted, specifically, a, the formed EPP main body and PC are put into an EPS forming mold; b) injecting pre-foamed EPS particles into the inner cavity of the EPP main body; c) injecting steam, heating and pressurizing, so that the EPS particles are expanded and combined with the EPP main body and the PC; d) cooling until forming; and e) opening the mold and taking out a finished product.

The invention provides a hydration heat in-situ self-foaming light composite board and a preparation method thereof. The light composite board is prepared from the following raw materials: an inorganic cementing material, expanded polystyrene particles and an active siliceous material, wherein the inorganic cementing material comprises quick lime. According to the preparation method, hydration heat released in the hydration process of quick lime is used as an endogenous heat source to induce expanded polystyrene particles to generate in-situ expansion foaming in a system, and meanwhile, a high-alkalinity environment is formed to promote cementitious materials such as silicon hydrochloric acid cement and active siliceous materials to generate inorganic gel on the surfaces of the expanded polystyrene particles; and a composite interface structure wrapped by inorganic gel is formed, so that the light weight of the board is reduced, the synergism and unification of the light structure, the mechanical property and the fireproof property are realized, and the organic-inorganic interface stability and the structural integrity are improved.

The invention relates to the technical field of wave-absorbing materials, in particular to a flame-retardant wave-absorbing material based on polystyrene foam and a preparation method of the flame-retardant wave-absorbing material. One-dimensional magnetic sepiolite fibers and two-dimensional modified graphene oxide are used as raw materials, composite aerogel with a three-dimensional oriented porous structure is prepared through freeze drying, and the composite aerogel, a flame retardant, a film-forming agent, a dispersing agent, a defoaming agent and deionized water are mixed to obtain the wave-absorbing coating. And putting the expanded polystyrene beads into the wave-absorbing coating, uniformly stirring, drying, and molding to obtain the flame-retardant wave-absorbing material based on polystyrene foam. The flame-retardant wave-absorbing material based on polystyrene foam prepared by the invention not only has excellent wave-absorbing performance, but also has excellent flame-retardant performance and mechanical performance.

The utility model provides an elastic latex paint layer heat preservation structure. Comprising a first expansion polystyrene board, a protection assembly is arranged on the front side of the first expansion polystyrene board, a connecting assembly is arranged on the front side of the protection assembly, and a fixing assembly is arranged on the edge of the outer side of the first expansion polystyrene board; a second expansion polystyrene board is arranged on the rear side of the first expansion polystyrene board, and sound insulation boards are arranged on the inner sides, close to the left side and the right side, of the first expansion polystyrene board and the second expansion polystyrene board. According to the elastic latex paint layer heat preservation structure, all parts of the structure are arranged in a matched mode, the structure is fixedly connected with an outer wall through the mounting holes and the mounting blocks, the connecting blocks move to the inner sides of the connecting plates and are connected to the inner sides of the adjacent connecting openings in an inserted mode, and the connecting bolts and the stainless steel hanging pieces are fixedly connected together. And the connecting frame is attached to the surface of the protection assembly, so that all layers can be connected more tightly, and the practicability of the device is greatly guaranteed.

A multi-layer panel product for use as structural sheathing. The panel product comprises a base manufactured-wood structural panel, such as OSB or plywood, with a factory-applied foam layer affixed to the exterior or outward-facing surface. The foam layer provides thermal resistance as an insulation layer. The foam layer also may act as an air and bulk water barrier. The foam layer may be expanded polystyrene (XPS) foam sheets.

The invention relates to the field of the transportation and storage of goods and, in particular, to a box or box-like transport container that can provide a high degree of thermal insulation. More particularly, the present invention relates to storage containers that comprise a box or box-like container that can be hand-held. In the field of logistics, there is a widespread requirement to protect a thermally sensitive load to ensure that certain types of produce and materials do not to pass through certain temperature thresholds. It is well known that, for example, vegetables when subject to extremes of temperature that they become flaccid, as the cell structure is broken down through the formation of icicles or through dehydration. The present invention seeks to provide a container having a construction formed from recyclable materials that have similar or better thermal properties to known materials such as expanded polystyrene.

The utility model discloses a bell mouth plugging type cable bridge, and relates to the technical field of cable bridge plugging, the bell mouth plugging type cable bridge comprises a pre-buried bridge and a plugging rubber block, an inlet and outlet wire penetrates through the pre-buried bridge, the inner side of the pre-buried bridge is filled with the plugging rubber block, and the plugging rubber block is respectively attached to the inlet and outlet wire and the pre-buried bridge; the embedded bridge comprises a horn mouth fixing seat, a cover plate is fixedly connected to the horn mouth fixing seat, the plugging rubber block comprises a polystyrene foam plugging block formed by pouring polystyrene foam, and the polystyrene foam plugging block is located in the horn mouth fixing seat; according to the utility model, the wire support is placed on the side surface of the horn mouth fixing seat, then a plurality of inlet and outlet wires are placed in the positioning holes at different positions through the communication grooves, the plurality of inlet and outlet wires are dispersed, the expanded polystyrene is ensured to wrap the outer side of each inlet and outlet wire, the sealing effect is improved, and the service life of the inlet and outlet wires is prolonged. And time consumption during plugging is reduced, and the plugging efficiency is improved.

To provide a jig for placement that enables weight reduction and a manufacturing method of the jig for placement.SOLUTION: A jig for placement 10 is for placement of a vehicle component and includes a base body 12 having a recess 16 corresponding to a shape of the vehicle component, and a urethane layer provided on the base body 12 at least in the recess 16. The base body 12 is formed of at least one of polystyrene foam and urethane foam. A manufacturing method of the jig for placement for placing a vehicle component includes a step of providing the urethane layer 14 on the base body 12 having the recess 16 corresponding to a shape of the vehicle component. The base body is formed of at least one of polystyrene foam and urethane foam.SELECTED DRAWING: Figure 1

The application relates to the technical field of new wall building materials, and discloses a building energy-saving thermal insulation wall composite material and a preparation method thereof. The preparation method of the building energy-saving thermal insulation wall composite material comprises the following steps: loading eutectic hydrated salt in modified diatomite to obtain a diatomite-based phase change material; modifying the diatomite-based phase change material through 3-(2,3-epoxypropoxy) propyl trimethoxysilane and a flame retardant to obtain a functionally modified diatomite-based phase change material; mixing microsilica powder, the functionally modified diatomite-based phase change material, calcium oxide, double-coated foamed polystyrene particles, a polycarboxylic acid-based high-performance water reducing agent and deionized water in proportion, performing mold pressing, standing, demolding and obtaining the building energy-saving thermal insulation wall composite material; the building energy-saving thermal insulation wall composite material has good heat insulation performance and simultaneously has flame retardant performance, and can be used in an outer wall thermal insulation material with high fireproof performance.

The utility model provides an expanded polystyrene receiving and collecting device, and relates to the technical field of expanded polystyrene collecting device design, the expanded polystyrene receiving and collecting device comprises a bottom plate, a telescopic cylinder is arranged on the surface of the bottom plate, one end of the telescopic cylinder is fixedly connected with a fixing column, a clamping block is nested on the surface of the fixing column, and the clamping block is fixedly connected with the bottom plate. And collecting supporting cloth is fixedly connected to the surface of the clamping block, a collecting supporting cloth bottom plate is fixedly connected to one end of the collecting supporting cloth, a threaded block is fixedly connected to the surface of the connecting plate, and a clamping ring is arranged on the surface of the threaded block. According to the foam plastic part collecting device, by designing the telescopic air cylinder, the connecting plate and other structures, foam plastic parts fall onto the surface of the collecting supporting cloth and smoothly slide onto the bottom plate through the inclined collecting supporting cloth, workers can conveniently and rapidly take the foam plastic parts and sort and package the foam plastic parts, the collecting process of the workers on the foam plastic parts is omitted, and the work efficiency is improved. Meanwhile, the distance between a worker and the extrusion die is lengthened, and potential safety hazards of the device in the operation process are reduced.

The invention discloses a method (200) for reclaiming polystyrene microparticles or microfibers from waste expanded polystyrene using a customized spinning disc apparatus (300). The method(200) includes dissolving (202) predetermined amount of polystyrene waste in tetrahydrofuran (THF) and filtering (203) to remove solid impurities to get a first feed liquid. The first feed liquid is then diluted with THF to get a diluted feed liquid and introduced into the spinning disc apparatus to produce micro-droplets (208) leading to microparticles having narrow size distribution. For producing microfibers, concentrated feed fluid is used to generate fluid ligaments (207), which result in microfibers having narrow range of diameters as well as with nanoporous surface. The method converts waste into valuable particles for various applications including biomedical, imaging, colloidal fluids. The polystyrene microfibers are useful as oil adsorbant.

The present invention relates to: a composition for increasing plant growth and biomass, the composition comprising, as an active ingredient, a fecal extract of mealworms fed with expanded polystyrene; and a use thereof. The fecal extract of mealworms in the present invention has the excellent effect of promoting plant growth and biomass, and thus can be effectively used as an active ingredient of a composition for increasing plant growth and biomass, a fertilizer composition, or a soil conditioner.