45 results about "Microcellular plastic" patented technology

The invention relates to a method for preparing opening micropore plastic material though slack-melting, extruding and molding. The method includes the processes: after reaching from a feeding device arranged on a double piston extruder to a heating material cylinder, preheating plastic powder with particle size of 40-1500 meshes is extruded by the piston driven by a hydraulic driver and compacted, transported and heated constantly; when the surface temperature of the plastic powder reaches the melt temperature of Tf plus or minus 20 DGE C, the power is extruded from a machine head and a die. Then, extruding matters are cooled and set by a cooling-traction device and the products are finished. By regulating the particle size of the powder, addictive and forming process conditions and so on, the invention can control opening rate, size and distribution of the aperture; the invention has simple process, short production cycle, low forming temperature and pressure as well as short forming time; besides, the invention can greatly reduce the production cost can not be degraded easily when the plastic is processed and can be widely applicable to molding of the opening micropore products of thermoplastic powders, thermosetting power and so on.

The invention discloses a micron-nano-sized aerator for sewage treatment and air flotation and the like. An air-water mixing chamber is arranged on the central side wall of a metal outer sleeve, a diffusion tube is communicated between the air-water mixing chamber and the metal outer sleeve, an air-water nozzle is arranged at the inlet end of the air-water mixing chamber, and a compression air inlet is arranged on the side part of the air-water mixing chamber, a micropore plastic round tube of which two ends are provided with spraying outlets is coaxially arranged at the center of the metal outer sleeve, a polytetrafluoroethylene plastic sheet is tightly matched between the micropore plastic round tube and the metal outer sleeve, micro pores the aperture of which is 1-3mum are distributed on the side wall of the micropore plastic round tube, a multi-layer cellular porous polytetrafluoroethylene plastic sheet is coated on the outer wall of the micropore plastic round tube, and the micro pores on each cellular porous polytetrafluoroethylene plastic sheet are arranged in a staggering way. The liquid sprayed from the spraying outlets is vaporous, the diameter of the air bubble is in nano level, the vaporized moisture is ascended together in water body, the contact area of the vaporized moisture and the water body is large, the retention period is long, the mass transfer rate coefficient is high and the concentration of the dissolved oxygen is high.

The invention discloses and provides an electromagnetic shielding composite wallpaper, which is characterized in that the wallpaper is composed of the following layers from the inner to the outer: fiber gridding cloth and metal coated on the surface thereof 10, an inner adhesive layer 20, a micro-porous plastic layer 30, an outer adhesive layer 40, and decoration paper 50, wherein the layers are connected through an adhesive. The invention also provides a manufacturing method of the electromagnetic shielding composite wallpaper. The electromagnetic shielding composite wallpaper provided by the invention has an electromagnetic shielding function, has the characteristics of alkali resistance, weatherability, and good fire resistant performance, does not carry out chemical reactions with alkaline cement plaster, and can be widely applied to fields that needs heat insulation under cold, hot, and damp environment, such as machinery, electronics, construction, aviation, aerospace, automobiles, and naval vessels.

In an apparatus for manufacturing a microporous plastic film roll by conveying a microporous plastic film by conveying rollers and then winding the microporous plastic film in a roll shape while being brought close to a near roller or being brought into contact with a touch roller, a part of the touch roller to be in contact with the plastic film has a Vickers hardness of 100 to 2,000, and the microporous plastic film is conveyed so that a side of the microporous plastic film opposite the side being in contact with the conveying rollers is in a noncontact state in a range being in contact with the conveying rollers.

The invention relates to a natural aromatic foam material and a preparation method, belonging to the technical field of foam materials and preparation methods. The natural aromatic foam material is prepared from a raw material polypropylene, and is characterized by also being prepared from natural aromatic plant materials and another additive. The raw material and materials are weighed in parts by weight: 8-20 parts of natural aromatic plant powder, 50-80 parts of the raw material polypropylene, and 1-10 parts of the other additive, wherein the other additive is a mixture of one or more of EPDM, modified talcum powder, monoglyceride and stearic acid. The natural aromatic plant powder is selected and is mixed with polypropylene to prepare a master batch, so as to prepare polypropylene-plant compound microporous plastic beads or sheets; the foam material can give out natural fragrance, and can be widely used in fields such as household consumer products and craft toys, the added value of the plastic foam material can be improved, and the use ratio of the natural aromatic plant can be improved.

The invention discloses a power soft packaging lithium ion battery with high power. The power soft packaging lithium ion battery is realized by the following technical scheme that a diaphragm has a structure for coiling according to the square battery pole group structure. The power soft packaging lithium ion battery is characterized in that a pole piece is inserted into an inflection point of each square surface of the diaphragm, and the pole piece has a two-way extraction lug structure; and the center of the pole group is provided with a micropore plastic plate skeleton. The lithium ion battery thoroughly changes the existing power battery mode, improves the mass ratio energy and the energy density of the battery by the external packaging structure of an aluminum plastics composite membrane, improves the afflux structure of an internal pole group by an innovative coiling lamination structure, and improves the defect of low strength of the aluminum plastics membrane by adding internally a micropore plastic skeleton structure so as to improve the safety performance of the battery.

The invention relates to the technical field of optical cable sheathes, and particularly relates to an optical cable sheathing material and a preparation method thereof. The optical cable sheathing material is prepared from PE (Polyethylene), carbon black, thermal expansion microspheres or hollow glass microspheres, antioxidants and white oil. The preparation method comprises the steps of adding the raw materials to a mixing device according to an adding proportion, performing primary mixing and homogenization, then adding to an extruding machine, forming a homogeneous polymer/gas system by the thermal expansion microspheres or the hollow glass microspheres and PE polymers under the combined action of a shear mixing field and the processing temperature in a machine barrel, then conveying to a machine head, extruding, then cooling, dicing and drying, so as to obtain sheathing material granules of microcellular structures. By utilizing the characteristics of light weight, high strength and low density, the cost of a traditional optical cable sheathing material can be greatly reduced, obtained microcellular plastics have stable foaming properties and microcellular sizes, the process is simple, the manufacturing is easy, and industrial utilization is satisfied.

The invention discloses an electrolytic method for carrying out surface texturing by use of a microporous plastic plate, and belongs to the technical field of electrolytic processing. The method comprises the following steps: (a), manufacturing an insulation plate with array micropores; (b), flatly attaching the insulation plate on the processing surface of a workpiece; (3), introducing an electrolyte between a tool cathode and the insulation plate to enable the electrolyte to reach the processing surface of the workpiece, connecting the tool cathode with the cathode of a pulse power supply, and connecting the workpiece with the anode of the pulse power supply; and (d), turning on the pulse power supply to carry out electrolytic processing on a surface texture, wherein the insulation plate is a plastic plate, and the array microprobes in the plastic plate are processed by use of a hot melt method. According to the invention, the surface texturing of the workpiece is realized by use of the plastic plate with the array microprobes, the array microprobes are processed on the plastic plate by use of the hot melt method, the microprobe processing precision is high, the efficiency is high, and the pitch of the microprobes is conveniently controlled; and the plastic plate is taken as an insulation layer, the stray corrosion of the surface texture is small, the surface texturing precision is improved, the method is simple and practical, and therefore, the application prospect is wide.

A turbomachine includes an inner housing which radially defines the flow channel of the turbomachine. A thermal barrier coating is arranged about the inner housing. The thermal barrier coating of the inner housing is made of microporous plastic coating which can be added to hollow spheres made of different materials and have different sizes. A method for applying a thermal barrier coating to the inner casing of a turbomachine includes preparing a material having a base material which has a microporous plastic; coating the outside of the wall of the inner casing by applying the base material to the inner casing; and curing the applied material, thus forming the thermal barrier coating.

The invention discloses a rapid light curing DLP 3D printing device. The rapid light curing DLP 3D printing device comprises a machine frame and a light source, a reflector, a resin groove supportingplate, a resin groove and a Z-axis motion module, wherein the light source, the reflector, the resin groove supporting plate, the resin groove and the Z-axis motion module are installed on the machineframe. The light source and the reflector are located on a lower layer of the machine frame, the resin groove supporting plate is installed on an upper layer of the machine frame, the resin groove islocated right above the reflector, and the Z-axis motion module is connected with a motion molding platform. The center point of the lower surface of the motion molding platform coincides with the center point of the resin groove, and a microporous transparent film through which air can pass is arranged at the bottom of the resin groove. Air is used as a polymerization inhibitor, so that a molding dead zone is formed between the resin groove and the bottom surface of molding resin, so that the resin cannot adhere to the resin groove in the curing molding process of the resin, repeated tearingup and down of the molding platform is not required, and the resin can be continuously pulled up and quickly printed. Microporous glass or a microporous plastic film is used in the microporous transparent film, the air is used as the polymerization inhibitor, oxygen ions are not required to be prepared and a special oxidation and penetration window is not required, so that the input and use costof equipment is greatly reduced.

An experimental facility for dissolving supercritical CO2 in polymer melt under the condition of interface updating comprises a gas cylinder, a pressure reducing valve, a pressure data display instrument, a booster pump, an oil bath heating container, a pressure chamber 1, an overflow valve, an oil pump, a pressure sensor, a control system, a pressure chamber 2, a magnetic coupling, an external driving motor and a changeable mixing element. By the experimental facility, mutual effects of shearing rate and homogeneous body rheological properties under different temperature and pressure conditions, dissolvability and dissolved quantity as well as influences of process parameters such as temperature, pressure and revolving speed and the structure of the mixing element to the dissolving speed of the supercritical CO2 in the polymer melt are researched. A new theory of dissolving and dispersing of CO2 in the polymer melt is further verified, the formation characters of a homogeneous body in a micropore plastic continuous forming process can be known essentially, the process parameters are formulated reasonably, molds and equipment are improved reasonably, the novel technology is promoted to be mature as soon as possible, and the experimental facility has important practical significance.

The invention relates to a continuous injecting and mixing method of a micropore plastic physical foaming agent. A continuous injecting and mixing device of a micropore plastic physical foaming agent is additionally arranged between an injector charging barrel and a rotary-type locked charging nozzle, and a preprocessed physical foaming agent is continuously injected into a plastic melting body by the continuous injecting and mixing device of the micropore plastic physical foaming agent, and is mixed in a rotary moving mode to enable the physical foaming agent to be dissolved into the plastic melting body. The invention has the advantages that the continuous injection of the physical foaming agent is beneficial to the control of the injecting amount and the pressure of the foaming agent, the better and more uniform mixture of the physical foaming agent and the plastic melting body and the relative independence of the injecting and mixing process of the physical foaming agent and the injecting forming process of micropore plastic so as to reduce the synchronous requirement of the physical foaming agent and the micropore plastic and the control difficulty of equipment.

The invention relates to the technical field of microporous plastic preparation, in particular to low-density polypropylene foam with heat insulation performance and a preparation method and application thereof. The foam is prepared from the following raw materials in percentage by mass: 70-90% of PP, 1-15% of PTFE, 1-20% of flake graphite, 2-12% of supercritical carbon dioxide and 0.2-2% of supercritical nitrogen. The foaming ratio of the low-density polypropylene foam prepared by the invention can reach 65 times; the density of a foamed product can be as low as 0.014 g/cm <3>, the heat conductivity of the foamed product is as low as 0.029 W/(mK), and the foamed product has excellent heat insulation performance and can be used as a building outer wall and floor heat insulation material, an automobile anti-collision buffer filling material and a packaging protection material for logistics turnover.

Provided are microcellular plastic articles having improved reflective properties. Also provided are methods of utilizing the disclosed articles.