31 results about "Plastic polymer" patented technology

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.

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.

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.

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.

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.

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 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.

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.

A flat, interlocking artificial tree comprising of one or more pegboard-type material pieces cut into a trapezoid or triangular, shape, one or more perforated square tubes vertically fastened to the pegboard sections, one or more inner tube union inserts vertically fastened inside the perforated square tubes affixed to the pegboard sections on one end or both ends of the square tubes that extend the height of the perforated square tubes and vertically connect one square tube to another secured by way of pin to create the overall shape and / or height of the tree, one or more plastic, metal-core, artificial pine or plastic polymer garland strands secured through the holes of the pegboard. The tip of a garland is passed through a hole of the pegboard, then twisted and / or glued or fastened to the opposite side of the pegboard to secure the garland.

A tamper evident card package includes a first portion formed of plastic polymer and defining a cavity extending from a base surface of the first portion, a second portion includes a flat sheet of plastic polymer joined to the first portion at a seal extending around at least a portion of a perimeter of the tamper evident card package, wherein the first portion and the second portion are coupled so as to form a unitary structure at the seal, and an insert contained between the first portion and the second portion, the insert comprising a single point-of-sale activated card and machine readable activation information for the point-of-sale activated card visible from an exterior of the tamper evident card package.

The application discloses a micro-plastic fluorescent fingerprint detection method and belongs to the technical field of fluorescent detection. In view of the problem that traditional portable fluorescent methods are easily interfered by particle size, concentration, aging degree and matrix background due to the dependence on single peak intensity signal, leading to low discrimination accuracy, at least two narrow-band LED light sources with different central wavelengths are adopted to irradiate the sample in turn or simultaneously, and the fluorescent signal intensity of at least three emission spectral windows is detected synchronously or sequentially, the intensity ratio between signals is calculated to construct a feature, and the feature is input into a pre-trained classification model to realize high-accuracy discrimination of micro-plastic polymer types. The method is mainly used for rapid identification and classification of micro-plastics in environmental water.

The invention discloses application of a plastic polymer resin material in a rotary belling process and device, and belongs to the field of application of plastic materials in packaging and printing. The device comprises a mold assembly, a pressure system and a transmission and positioning system, an upper mold is composed of a roller core and a plastic polymer resin and polymer synthetic fiber tow stacking forming layer, and a molding layer is arranged on the surface of a roller body of a lower mold; the pressure system is divided into two parts, namely dynamic adjustment in a debugging stage and constant maintenance in batch production; the invention further provides a device preparation method which comprises the steps of roller core manufacturing, roller body hardening treatment, forming layer coating and pasting, molding and the like, and the coated paper belling method comprises the steps of pretreatment, mold installation and adjustment, feeding and quality detection. The embossing effect of the medium-gram-weight coated paper can be improved, the cost is reduced, the period is shortened, paper damage is reduced, and stable embossing quality is guaranteed.

Systems and methods for processing a mixed plastic waste feed to produce a hydrogen-rich hydrocarbon product, such as synthetic crude oil or pyrolysis oil, by processing the mixed plastic waste feed through two cracking units. The first cracking unit is operated at a temperature and a residence time sufficient to at least partially depolymerize the plastic polymers in the mixed plastic waste feed to produce a molten oligomers product stream also containing inorganic components from the mixed plastic waste feed and a gas stream. This molten oligomers product stream is further processed in a thermal or a catalytic cracking unit to produce a hydrocarbonaceous stream that is processed to produce the hydrogen-rich hydrocarbon product, such as a synthetic crude oil that can be processed in a refinery or a pyrolysis oil that can be fed to a steam cracker.

The invention relates to a wax of natural origin for cosmetic products consisting of a homogeneous phase of Helianthus annuus sunflower seed wax wherein hydrogenated castor oil is contained. The wax is obtained quickly cooling a molten solution obtained melting separately and then mixing together the aforesaid molten constituents in suitable ratios. The natural origin wax of the invention gives to the cosmetic products containing it useful properties in terms of stability and retains the same flowability of products containing plastic polymers such as polyethylene.

A device and method for extracting analytes from fluid samples using a porous frit composed of sintered plastic polymer particles with a sorptive polymer coating. The frit undergoes plasma fluorination treatment prior to coating application, reducing non-specific binding while enhancing coating adhesion. The sorptive polymer remains above its glass transition temperature at room temperature, enabling analyte diffusion into the bulk polymer rather than surface adsorption. The device integrates into various fluid path configurations and provides rapid three-step sample preparation through extraction, rinse and elution steps. The invention achieves high extraction efficiency and reproducibility across multiple biological matrices while eliminating common problems like clogging and emulsion formation.

The present invention relates to fusion proteins capable of degrading plastic polymers. The fusion proteins comprise two or more serin hydrolase domains and comprise the necessary features to efficiently and cost effectively be used in degradation of plastic polymers. Provided herein are also nucleic acids and nucleic acid vectors encoding such fusion proteins and cells comprising the same. Provided herein are also methods of producing such fusion proteins, and methods and uses of degrading plastic polymers using the fusion proteins provided herein.