47 results about "Plastic polymer" patented technology

A solvent-based plastic recycling method that removes color and produces plastic polymers substantially free of exogenous colorants. The method comprises selecting a solvent that selectively dissolves an individual polymer and has low solubility of colorants and decomposition products of the colorants. A combined precipitator and piston device is used to precipitate the polymer solution and mechanically remove the solvent from the precipitate before thermal drying. An adsorption bed is used to clean the recovered solvent as it is recycled to the process.

The present invention relates to a method for preforming a composite material (I) into a plate shape, the composite material comprising reinforcing fibers bonded together, particularly by means of a plastic polymer material. Specifically, the method includes an intermediate molding stage (b) comprising at least the following operations: - introducing gas (III) into a second chamber (4) while the external pressure Pext equals atmospheric pressure, simultaneously maintaining the pressure P2 in the second chamber (4) below the external pressure Pext and, in particular, atmospheric pressure, and thus locally maintaining a distance between the upper membrane (2) and the lower membrane (1), and simultaneously maintaining the positioning and contact between the composite material (I) and the two membranes (1 and 2) in the contact area (5); - evacuating gas (III) contained in the first chamber (3) to press the lower membrane (1) onto the entire molding surface (22) present at the bottom (21) of the mold (20). The invention also relates to an apparatus suitable for carrying out this method.

The utility model relates to the technical field of plastic polymer master batch forming equipment, in particular to a cooling device with a quick drainage structure for master batch production, which is characterized in that a recovery tank is inserted and fixed on a bottom plate of a cooling tank, an inner cavity of the recovery tank is communicated with an inner cavity of the cooling tank, a water stop plate is arranged in the cooling tank and is erected above the recovery tank, and the water stop plate is arranged in the cooling tank. The side edge of the water stop plate movably abuts against the inner side wall of the cooling tank, the filter box is fixedly arranged on the lower side wall of the cooling tank, the connecting pipe is fixed to the lower end of the side wall of the recycling tank in a penetrating mode, the outlet end of the connecting pipe is fixed to an end plate of the filter box in an inserted mode, and the water pump is fixedly arranged on a lower side plate of the cooling tank. The water pump is respectively connected with the cooling tank and the filter box; by arranging the recycling structure close to the cooling tank in length, the corresponding opening and closing drainage structure and the corresponding filtering and recycling structure, the drainage speed of the cooling tank is increased by enlarging the opening structure.

A reusable modular structural member that may replace wooden structures used in concrete forming, transportation, marine, and construction applications. The reusable modular structural member includes a structural profile with first and second sides; a plurality of support beams extending from the first to the second side; at least two fasteners, one at a first end and another at a second end of each of the plurality of ribs; and a groove on a first edge and a tongue on a second edge that are configured to form a dovetail joint that can attach two reusable modular structural members of similar configuration. A reusable modular member can include the modular structural profile and interfacial layers covering the first and second sides. The reusable modular member may be made by extruding the structural profile and molding a plastic polymer to external portions of the structural profile to form the interfacial layers.

The application provides a method for preparing modified calcium carbonate from phosphogypsum and application thereof, and the preparation method comprises the following steps: S1, uniformly mixing phosphogypsum, POF (Porous Organic Frameworks) material and water to prepare a slurry; S2, adding ammonia water into the slurry, and controlling the sulfur-nitrogen ratio to be 40-50%; S3, introducing carbon dioxide gas into the slurry of S2 to react, and after the reaction is completed, filtering and washing are performed, and the filter residue is dried to obtain POF material modified calcium carbonate. The method uses phosphogypsum as raw material, modifies the calcium carbonate in the preparation process of the calcium carbonate, and uses the modified calcium carbonate for plastic products, so that the compatibility problem of the calcium carbonate and plastic polymers can be solved, the strength and toughness of the plastic products are significantly improved, the cost is low, the process is simple, and the method is also helpful for resource utilization of the phosphogypsum.

The utility model discloses an automatic feeder for plastic polymer products, which relates to the technical field of plastic processing and comprises a bottom support and a bottom support, and a top support is fixedly mounted at the top of the bottom support. And the grabbing assemblies are installed on the inner walls of the two sides of the top support and used for grabbing and transporting the plastic particle packaging bags. Compared with the prior art, through cooperation of the grabbing assembly and the bag opening assembly, plastic particle packaging bags are opened in the moving process, pouring of plastic particles is completed, meanwhile, the packaging bags and the plastic particles can be separated, the empty packaging bags are carried away, the bag opening work of workers is reduced, the labor intensity of workers is reduced, and the working efficiency is improved. According to the plastic particle feeding device, the feeding speed of plastic particles is increased, the side faces of passing plastic particle packaging bags are beaten through the arrangement assembly, it is guaranteed that the plastic particles cannot be retained in the empty packaging bags, and waste of raw materials is reduced.

This invention relates to engineered plastic-degrading enzymes with improved functional features. In particular, modified PETases capable of hydrolysis of PET or polyethelene terephthalate plastic polymer are disclosed herein. These engineered PETases contain one or more amino acid modifications at specified residue or residues, for example, N233, and exhibit improved enzymatic activity as well as therrnostability.

The present invention belongs to the field of plastic / polymer recovery and relates to a process for converting, for example, an end-use / waste PET polymer, a very common polyester, into a commonly used pure monomeric compound, such as BHET, which can be reused in the production of "original" PET, i.e. PET having a similar or the same quality as unrecovered PET. In addition, the invention can also be used to recover BHET and textiles (e.g., cotton) from PET / textile blends.

A reusable modular structural member that may replace wooden structures used in concrete forming, transportation, marine, and construction applications. The reusable modular structural member includes a structural profile with first and second sides; a plurality of support beams extending from the first to the second side; at least two fasteners, one at a first end and another at a second end of each of the plurality of ribs; and a groove on a first edge and a tongue on a second edge that are configured to form a dovetail joint that can attach two reusable modular structural members of similar configuration. A reusable modular member can include the modular structural profile and interfacial layers covering the first and second sides. The reusable modular member may be made by extruding the structural profile and molding a plastic polymer to external portions of the structural profile to form the interfacial layers.

The invention discloses a novel full-bio-based degradable plastic polymer material and a preparation method thereof, and belongs to the technical field of degradable plastic products. According to the material, through the synergistic effect of the high-proportion bamboo powder and the degradable plastic, the target material is expected to have excellent mechanical properties such as light weight and high impact strength, meanwhile, complete biodegradation is achieved, and a new technical path is provided for solving the problem of dependence of plastic pollution and fossil resources. The mechanical property of the full-bio-based degradable novel plastic polymer is remarkably optimized, and light weight and high toughness are both considered. Wherein 65-75% of high-proportion bamboo powder is used for filling, so that the impact strength and fracture resistance of the material are effectively improved through interface combination with a degradable plastic body while the density of the material is reduced, the problems of high brittleness and weak impact resistance of biodegradable materials such as degradable plastics are solved, and the requirements of the fields of packaging, daily necessities and the like on light weight and impact resistance are met.

A solvent-based plastic recycling method that removes color and produces plastic polymers substantially free of exogenous colorants. The method comprises selecting a solvent that selectively dissolves an individual polymer and has low solubility of colorants and decomposition products of the colorants. A combined precipitator and piston device is used to precipitate the polymer solution and mechanically remove the solvent from the precipitate before thermal drying. An adsorption bed is used to clean the recovered solvent as it is recycled to the process.

According to a first aspect of the invention, there is provided a polymer connector plate, and in particular a fibre reinforced polymer connector plate, the connector plate comprising a polymer connector plate base; and a plurality of polymer legs extending from the plate base. According to a second aspect of the invention, there is provided a method of manufacturing a polymer connector plate, the method comprising extruding raw plastic polymer material, typically comprising fibre reinforced polymer pellets, to define the polymer connector plate defined above. According to a third aspect of the first embodiment of the invention, there is provided an apparatus for manufacturing a polymer connector plate, and in particular a fibre reinforced polymer connector plate, the apparatus comprising an injection moulding apparatus.

This invention relates to engineered plastic-degrading enzymes with improved functional features. In particular, modified PETases capable of hydrolysis of PET or polyethelene terephthalate plastic polymer are disclosed herein. These engineered PETases contain one or more amino acid modifications at specified residue or residues, for example, N233, and exhibit improved enzymatic activity as well as thermostability.

The present invention relates to a laminate product comprising a combination of layers, the product comprising a matrix of solid particles embedded in a binder as a base and entirely coated with a sol-gel treatment, mainly to impart hardness and stain-resistant properties. The binder contains recycled plastic polymers or waste selected from the group consisting of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), polycarbonate (PC), and mixtures thereof, which, together with the coating, ensures that the composition itself is 100% recyclable. The sheet or plate configuration comprises a plastic binder or filler and / or mineral fillers (1, 2), with two primer layers (4) applied to incorporate a decoration step using pigments and additives (3), and an upper vitreous protective coating (5).

A universal pivot socket for use with a hand truck is disclosed. The pivot socket comprises a main body with a hollow interior accessible through an opening at the top, which is configured to connect directly to the hand truck. Integrally formed with the main body is a flange extending outwardly from one of its vertical faces. The protrusion includes an aperture that extends through its center and is designed to accommodate a connecting element intended to be affixed to the hand truck. The pivot socket is constructed from a plastic, plastic-like, polymer, or polymer-like material, which has a lower hardness level compared to steel or aluminum. This material choice allows for easy sliding between two-wheel and four-wheel modes and prevents the creation of scraps, scratches, or other marks along the aluminum extrusion of the hand truck.

The invention discloses a micro-nano plastic analysis method based on nano hyperspectral fingerprint characteristics, and belongs to the technical field of environmental pollutant detection. The method comprises the following steps: establishing an initial spectrum library [SL1.0] containing a plurality of plastic polymers; optimizing the spectrum library through principal component analysis, extracting characteristic peaks, determining 600-840nm as a plastic fingerprint region, and constructing an optimized spectrum library [SL2.0]; preparing an atmospheric sedimentation sample or a biological tissue paraffin section; and collecting a hyperspectral image of the sample, and matching the hyperspectral image with the optimized spectrum library in the fingerprint region by using a spectrum angle matching algorithm to realize component identification and spatial positioning of the micro-nano plastic. According to the method, spectral redundancy and noise interference are effectively eliminated through PCA optimization, the multi-component identification accuracy is remarkably improved by focusing the fingerprint area, the form, component and distribution information of the micro-nano plastic can be obtained at the same time, and a reliable technical means is provided for environmental monitoring and toxicological research.

The invention belongs to the technical field of plastic recovery, and particularly relates to a waste plastic recovery treatment method which comprises the following steps: S1, pretreatment: sorting, crushing and cleaning waste plastics; s2, low-temperature critical extraction: feeding the pretreated plastic into a high-pressure reaction kettle, injecting an extraction solvent into the high-pressure reaction kettle, extracting under the conditions that the temperature is 50-100 DEG C lower than the melting point of the plastic and the pressure is higher than the critical pressure of the extraction solvent, and separating to remove additives and small molecular impurities; s3, in-situ reconstruction: after extraction, adding a reconstruction agent into the high-pressure reaction kettle, and carrying out a molecular chain repair reaction in a supercritical fluid atmosphere; and S4, the reconstructed plastic melt is extruded and granulated. Extraction is carried out at the temperature lower than the melting point of plastic by 50-100 DEG C, a plastic polymer main body is kept in a solid state and is not molten, a thermal oxygen chain scission reaction is avoided, and a molecular chain structure is reserved; and reconnection and growth of the molecular chain are realized through reconstruction.

Described herein are bioplastic polymers or compositions or articles comprising the bioplastic polymers. A bioplastic polymer or composition includes at least one polycaprolactone (PCL) and at least one bioplastic. The bioplastic polymers or compositions described herein have increased / enhanced degradation / biodegradation properties, such as marine degradation / biodegradation properties (e.g., aerobic biodegradation and / or biodegradation in seawater) relative to at least one bioplastic alone. Further described herein are methods of making bioplastic polymers or compositions. The method comprises blending or mixing at least one PCL and at least one bioplastic to prepare a PCL-bioplastic blend or mixture; and blending the PCL-bioplastic blend or mixture to produce a bioplastic polymer or composition.

A solvent-based plastic recycling method that removes color and produces plastic polymers substantially free of exogenous colorants. The method comprises selecting a solvent that selectively dissolves an individual polymer and has low solubility of colorants and decomposition products of the colorants. A combined precipitator and piston device is used to precipitate the polymer solution and mechanically remove the solvent from the precipitate before thermal drying. An adsorption bed is used to clean the recovered solvent as it is recycled to the process.

The invention discloses a micro-plastic fluorescent fingerprint detection method, and belongs to the technical field of fluorescent detection. In order to solve the problem that the traditional portable fluorescence method is easily interfered by particle size, concentration, aging degree and matrix background due to dependence on a single-peak intensity signal, so that the discrimination accuracy is low, at least two narrowband LED light sources with different central wavelengths are adopted to sequentially or simultaneously irradiate a sample; the method comprises the following steps: acquiring at least three emission spectrum windows, synchronously or sequentially detecting the fluorescence signal intensities of the at least three emission spectrum windows, constructing features by calculating the intensity ratio of the signals, and inputting the features into a pre-trained classification model to realize high-accuracy discrimination of the type of the micro-plastic polymer. The method is mainly used for rapidly identifying and classifying the micro-plastics in the environmental water body.

The present application relates to the technical field of material science, and particularly relates to a visual monitoring interface pressure distribution piezochromic micro-nano fiber film large-scale preparation method, the present application utilizes the irreversible plastic deformation principle of plastic polymer under pressure, and a multilayer ultrathin piezochromic film of micro-nano fiber layer-by-layer construction is prepared by electrospinning method with polyacrylonitrile and polymethyl methacrylate as raw materials; irreversible plastic deformation occurs after pressure, which induces the disappearance of interlayer and intralayer pores, changes the light scattering path, causes irreversible transparency change, and provides long-term stable pressure information recording capability; and the piezochromic film can be combined with a color film or a bromine cesium lead fluorescent film as a substrate to obtain a new structure piezochromic film which can be separated and combined as needed, the pressure monitoring resolution is obviously improved, and the piezochromic film has the advantages of real-time, convenience, stability and applicability.

Particle foam process for processing particulate plastic polymers (1) in a forming tool (5, 6, 7, 8, 9) with one or more cavities (5) and one or more injector nozzles (2) for injecting the particulate plastic polymers (1) into the cavity or cavities (5), characterized in that the particulate plastic polymers (1) are fed into a plasma unit (3) through a metering valve (18) and then an inlet pipe (19) before being injected into the cavity, in which they are surrounded by plasma by at least two opposing plasma nozzles (10) arranged at an angle of 1 to 90° relative to the inlet pipe (19), from where they are pumped into a particle container (4) and collected there,from there into an injector nozzle (2) with a second metering valve (20) located in front of the injector nozzle (2) by means of an air venturi pump (12) located there by means of negative pressure and from there also with the aid of the air venturi pump (12) into the tool (5, 6, 7, 8, 9).

The invention relates to the field of antibacterial functional polymer materials, and discloses a quaternary phosphonium salt ionic polymer, a preparation method and application thereof, and antibacterial plastic. The polymer comprises a structural unit I, a structural unit II, a structural unit III, a structural unit IV and a structural unit V, the structural unit I has at least one structure as shown in a formula (1) and / or a formula (2) and optionally a structure as shown in a formula (3); the structural unit II has a structure as shown in a formula (4); the structural unit III has a structure as shown in a formula (5); the structural unit IV has a structure as shown in a formula (6); the structural unit V has a structure as shown in a formula (7); the polymer simultaneously contains quaternary phosphonium salt groups in the side group and the main chain of the polymer and in the conjugated diene, so that the polymer has high ionization degree and can be used as an antibacterial agent for preparing antibacterial plastics.

A reusable modular structural member that may replace wooden structures used in concrete forming, transportation, marine, and construction applications. The reusable modular structural member includes a structural profile with first and second sides; a plurality of support beams extending from the first to the second side; at least two fasteners, one at a first end and another at a second end of each of the plurality of ribs; and a groove on a first edge and a tongue on a second edge that are configured to form a dovetail joint that can attach two reusable modular structural members of similar configuration. A reusable modular member can include the modular structural profile and interfacial layers covering the first and second sides. The reusable modular member may be made by extruding the structural profile and molding a plastic polymer to external portions of the structural profile to form the interfacial layers.

The invention discloses cutinase ChCut1 with a function of degrading polyurethane plastics. The amino acid sequence of the cutinase is shown as SEQ ID NO. 1. The invention also provides an extracellular expression method and application of the cutinase. The cutinase can be massively expressed in the saccharomyces cerevisiae, so that the efficient, stable and low-cost cutinase is produced. The cutinase can effectively degrade Impranil PU (polyurethane) under the condition of 28 DEG C, so that a plastic polymer structure is destroyed, and biodegradation under a mild condition is realized.

The present invention relates to an energy transport system using pressurised fluids, comprising: pneumatic compressors or hydraulic pumps; fluid storage chambers or tanks at the discharge point and others at the receiving point; pipes for transporting or transferring the pressurised fluids; pressure sensors; fluid flow or pressure regulators and shut-off valves; multi-stage turbines actuated by the fluids, said turbines driving the electric generators or alternators; and a microprocessor controlling its operation. The materials used are stainless steels, reinforced concrete and corrosion-resistant plastic polymers, such as polyethylene. The compressors are driven mechanically or by means of electric motors powered by the power generators of wind turbines, water turbines or photovoltaic panels. The fluids used are carbon dioxide, ammonia, biofuels, synthetic fuels, natural gas, methane, biomethane, alcohols, water and mixtures thereof, and especially air.

The invention discloses a bathtub color preparation process which comprises the following specific steps: S1, cleaning an acrylic plate by using a cleaning agent, and cleaning the surface of the acrylic plate to remove impurities such as grease, dirt and the like; s2, dyeing the acrylic plate by using a dyeing agent through dyeing equipment; s3, in the dyeing process of the acrylic plate, a dispersing agent is added to improve the dyeing effect; s4, after dyeing the acrylic plate, washing with water and drying; and finally, measuring, cutting and assembling. The invention has the following beneficial effects: components such as pigments, dyes or fluorescent substances are introduced into a plastic high polymer material system to obtain the required color, thereby realizing regulation and control of the condition and color of the material, a user can customize the color of the bathtub according to own preferences, and the color of the bathtub can be customized by implementing the process. And an acrylic bathtub product which has excellent decoration and can be customized and has multiple selectable colors can be produced.

This invention discloses a method for preparing polymer-based spherical powder for laser sintering, comprising the following steps: A self-heating plastic polymer is pretreated by drying and dehydration, and then cryogenically pulverized to obtain coarse powder; using an inert gas as a transport carrier, the coarse powder is fed into a plasma torch, where it is heated and melted to form molten droplets; the molten droplets enter a swirling cavity, where they form uniform droplets under the shearing and dispersing action of the swirling field, and spontaneously shrink and spherize under surface tension to form spherical droplets; using an inert gas as a carrier gas, the spherical droplets are cooled and solidified through a three-stage gradient cooling channel to obtain polymer-based spherical powder. Spherical powder with a particle size in the range of 1–125 μm and a sphericity of not less than 95% is obtained. This shoe-shaped powder exhibits high sphericity, excellent flowability and dispersibility, and can significantly optimize the uniformity of powder spreading and the density of packing during the powder bed melting process.

To provide a simple, continuous process for chemically recycling mixtures of polymers that contain fillers to chemical intermediates for further upgrading.SOLUTION: A process that separates the fillers found in plastics from catalyst and the gases in a fluid bed catalytic pyrolysis process for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX, is described.SELECTED DRAWING: Figure 1

This utility model discloses an all-plastic polymer corrosion-resistant hose clamp, relating to the field of filter element components. The key technical points are: it includes a clamp body and a pin made of all-plastic polymer material. A central groove is formed at the top center of the clamp body, and insertion holes A and B are respectively formed on both sides of the central groove at the top of the clamp body. The effect is that the clamp body and pin, made entirely of all-plastic polymer material, are combined with a winding thread, which contains no metal ions. Furthermore, the all-plastic polymer material has high corrosion resistance, fundamentally avoiding the problem of traditional metal clamps easily rusting in acidic, alkaline, and humid environments, eliminating the risk of rust products contaminating the filter media. It is also suitable for some special industries that require filters to be free of metal ions. The rotational motion is converted into linear tightening force by the cooperation between the rod body and the connecting groove. The wound thread is further tightened as the pin rotates, precisely improving the clamping force by shortening the effective tension section length.