111 results about "Biodegradable plastic" patented technology

An environmentally friendly fresh-keeping can and a method of manufacturing the same are provided. The environmentally friendly fresh-keeping can includes a housing, an inner container, an easy-open lid, and a bottom cover. The housing, the inner container, the easy-open lid, and the bottom cover are respectively made of a spiral paper tube, bio-based polyethylene 2,5-furanoate (PEF), aluminum, and biodegradable plastic. The inner container is mounted into the housing through an inner opening on a top of the inner container. Then the easy-open lid and the bottom cover are respectively used to seal the inner opening of the inner container and a bottom opening of the housing. The respective components are made of biodegradable, recyclable and reusable materials and able to be disassembled for recycling and reuse. Thereby the can meets requirements for environmental protection and recycling.

The invention discloses a micro-plastic degrading bacterium P.ataveovii and application thereof, and belongs to the technical field of microorganisms. According to the invention, a strain of Priestia aryabhattai BK12 is separated and screened from plastic wastes, and the plastic degradation capability of the Priestia aryabhattai BK12 is deeply explored. A research result shows that the P.avenae BK12 can be used for efficiently degrading the PET (Polyethylene Terephthalate), and the P.avenae BK12 can be used for efficiently degrading the PET (Polyethylene Terephthalate), so that the P.avenae BK12 can be used for efficiently degrading the PET (Polyethylene Terephthalate). The invention provides a new microbial resource for the development of a plastic degradation agent, contributes to promoting the development of a biodegradable plastic technology and solving the problem of environmental pollution caused by PET, and assists in realizing the goal of green and sustainable development.

The application discloses a kind of lignin modified PBS biodegradable plastics and preparation method thereof, belong to biodegradable technical field.The lignin modified PBS biodegradable plastics includes the following mass parts of components:PBS 100 parts, acetic ether fractionated lignin 5~10 parts.In the application, hydrogen bond is formed between the polar functional group of acetic ether fractionated lignin and PBS, and the low molecular weight reduces the steric hindrance and chain length in the process of stretching, reduces the agglomeration of lignin, improves the compatibility of lignin and PBS, and further improves the mechanical properties of PBS composite material, greatly improves the ductility of PBS.The lignin modified PBS biodegradable plastics provided by the application has good mechanical properties, ultraviolet resistance, antibacterial property, light-heat conversion performance and light-heat antibacterial performance.The preparation method is simple, low energy consumption, low toxicity, and the solvent can be recycled, which saves resources and energy to a certain extent, and responds to the goal of green and sustainable development.

The invention relates to the technical field of polyester degradable plastics, and particularly discloses an automotive trim composite material with antistatic and sound-absorbing functions and a preparation method thereof. The composite material comprises a composite material body and a sound absorbing material compounded on the surface of the composite material body, comprising the following components in parts by weight: 50-70 parts of a compound resin matrix of polylactic acid and poly (adipic acid-butylene terephthalate), 20-35 parts of multifunctional reinforced fibers, 5-10 parts of a structural conductive antistatic agent and 0.05-0.21 part of a microbial degradation triggering agent. The preparation method comprises the steps of fiber pretreatment and modification, conductive master batch preparation, raw material drying, mixing molding, sound-absorbing material compounding and the like. According to the invention, synergism of long-acting antistatic property, high sound absorption, controllable degradation and excellent mechanical property is realized, migration of an antistatic agent is avoided, the sound absorption coefficient is high, degradation is controllable, the process is simple, industrialization is feasible, and the composite material is suitable for automotive interior parts.

The invention relates to a seawater degradable seedling raising frame and a preparation method and application thereof.The preparation method of the seawater degradable seedling raising frame comprises the following steps that (1) modified biodegradable plastic is prepared, specifically, a non-enzymatic seawater degradation accelerator, an enzymatic seawater degradation accelerator, a surface hydrolysis inhibitor and a small amount of biodegradable resin are mixed and subjected to melt extrusion, and the modified biodegradable plastic is obtained; the extrusion temperature is 140-180 DEG C, high-concentration master batches are prepared, the master batches and the remaining biodegradable resin are mixed, melt extrusion is conducted again, the extrusion temperature is 160-190 DEG C, cooling and granulation are conducted, and the modified biodegradable plastic is obtained. (2) modified biodegradable plastic is placed in an injection molding machine, heated to a molten state and then injected into a seedling raising frame mold, demolding operation is conducted after injection molding is completed, and the seawater degradable seedling raising frame is formed and can be controllably degraded to meet the requirement for the growth cycle of sea grass, is harmless to the environment and promotes recovery of a sea grass bed ecological system; sustainable marine ecological restoration is realized.

There is provided a method and apparatus for processing a bioplastic that can be used in multiple industries such as, for example, food / non-food applications, apparel industry applications, retail store packaging and so forth. It is preferable that the present invention is able to enable replacement / reduction of use of conventional non- biodegradable plastic originating from petrochemicals.

This invention relates to the field of sludge treatment technology, and more specifically, to a biodegradable green sludge dewatering drainage board, comprising: a biodegradable drainage board structure, the biodegradable drainage board structure including: a glue-free straw core board and a biodegradable filter membrane wrapped around the glue-free straw core board; one or more longitudinal grooves are formed on the glue-free straw core board to allow water flow, so that water filtered through the biodegradable filter membrane flows in the drainage channel formed between the longitudinal grooves and the biodegradable filter membrane. Both the glue-free straw core board and the biodegradable filter membrane are biodegradable. The glue-free straw core board itself is a natural material, contains no glue, and can be gradually decomposed by microorganisms in the natural environment, preventing incomplete degradation. In stark contrast to traditional plastic drainage boards, this invention avoids the long-term environmental pollution problems caused by non-biodegradable plastics, conforms to the current concept of environmental protection and sustainable development, and helps reduce soil and water pollution, protecting the ecological environment.

The application discloses a kind of starch-based biodegradable plastic preparation's blending composite system, it is related to starch-based plastic preparation technical field, including support;Bottom plate is fixed in the upper end surface of the support, and its bottom is fixed with driving motor;Blending bucket is fixed in the upper end surface of the bottom plate, and its top detachably installs cover plate;Pivot is rotatably arranged in bottom plate and cover plate, and is driven by the driving motor;Discharge assembly one and discharge assembly two are fixed on the pivot symmetrically;Water injection assembly is configured as two, fixed on the pivot symmetrically;And first blending component is fixed on the pivot, and located below discharge assembly one and discharge assembly two.

The invention discloses a preparation method of a biodegradable synergistic benzotriazole light stabilizer, and belongs to the technical field of high polymer material additives. The method comprises the following three steps: a) carrying out pre-activation reaction on a benzotriazole derivative and anhydride; b) carrying out catalytic grafting reaction on the pre-activated product and hydroxyl-terminated polyester (such as polycaprolactone glycol and polylactic acid glycol, and the number-average molecular weight is 1500-5000); c) carrying out mechanochemical compounding on the grafted product and plant polyphenols (such as tannic acid, quercetin and gallic acid) in a mass ratio of (8-12): 1; through chemical grafting of the benzotriazole light stabilizer and the biodegradable polyester and synergistic compounding of the benzotriazole light stabilizer and the plant polyphenol, the biodegradability and the synergistic effect of the light stabilizer are achieved, and the light stabilizer can be applied to ultraviolet protection of biodegradable plastics and has the advantages of being environmentally friendly and efficient.

The invention relates to the field of environmental science materials, in particular to rice hull-based biodegradable plastic and application thereof.The rice hull-based biodegradable plastic is prepared by the steps that rice hulls are sequentially subjected to alkali liquor soaking and saturated vapor pressure treatment, then a hemicellulose activating agent is added into the rice hulls to extract cellulose, then the cellulose and a product A used for improving the processability of the plastic are subjected to a gelatinization reaction, and a product B is obtained; the rice husk-based biodegradable plastic is prepared by mixing the rice husk-based biodegradable plastic with a product A for improving the tensile strength and bending strength of the plastic, mixing the product A with a product B for improving the tensile strength and bending strength of the plastic to obtain a composite colloid, and shaping the composite colloid to obtain the rice husk-based biodegradable plastic which can be completely degraded, has better mechanical properties and heat resistance, can be used in the fields of packaging, agriculture or biomedicine, and has wide application prospects. While white pollution is reduced, cyclic utilization of resources is realized.

This invention discloses an injection molding apparatus and method for biodegradable plastic cups, relating to the field of plastic cup injection molding technology. The apparatus includes an injection molding machine, a lifting mechanism, a supporting mechanism, a positioning mechanism, a driving mechanism, a rotating mechanism, and an auxiliary mechanism. The lifting mechanism is mounted on top of the injection molding machine, the supporting mechanism is mounted at the bottom of the lifting mechanism, the positioning mechanism is mounted at one end of the supporting mechanism, the driving mechanism is mounted at the other end of the supporting mechanism, the rotating mechanism is mounted between the driving mechanism and the positioning mechanism, and the auxiliary mechanism is mounted above the positioning mechanism. This invention utilizes the coordinated arrangement of the lifting mechanism, supporting mechanism, positioning mechanism, and driving mechanism to facilitate the movement of the molded plastic cup to the positioning mechanism via the lifting and driving mechanisms. Combined with the elasticity of the supporting mechanism, the auxiliary mechanism can polish the rim of the plastic cup, improving the efficiency of rim treatment and enhancing the quality of the finished plastic cup.

This utility model relates to a mixing device for biodegradable plastic processing, including a mixing tank with a feed pipe along one side of its top surface. Multiple storage tanks are circumferentially suspended around the feed pipe on the outer side of the mixing tank. An arc-shaped track is horizontally suspended directly below the discharge ports of the storage tanks. A feeding auger is radially mounted between the arc-shaped track and the feed pipe. A discharge pipe is connected downwards to the tail of the feeding auger and is rotatably inserted into the feed pipe. A follower frame is provided between the head of the feeding auger and the arc-shaped track. The top of the follower frame is rotatably supported by the head of the feeding auger, and its bottom is circumferentially slidably connected to the top surface of the arc-shaped track. A feeding hopper is connected upwards to the head of the feeding auger and can move to directly below the discharge port of the corresponding storage tank as the feeding auger rotates circumferentially. This mixing device achieves intensive feeding of multiple powder fillers, reducing equipment costs.

This utility model discloses a mold for processing biodegradable plastic takeaway boxes, including a processing table. A rotating seat is rotatably mounted on the processing table, and mold boxes are symmetrically arranged on the rotating seat. A support plate is provided on the processing table, and a rotating column is rotatably mounted under the bottom surface of the support plate and connected to the rotating seat. A drive cylinder is provided on the support plate, and a linkage plate is provided on the drive rod of the drive cylinder. The drive cylinder drives the linkage plate to move, causing the cap to move synchronously. The linkage plate first moves a distance independently, causing the magnetic block to engage and lock with the mating block. Then, it drives the baffle to move. Through the gear transmission and crank structure of the synchronization mechanism, the rotating seat rotates to change the position of the mold box. When the baffle stops moving due to the obstruction of the limiting block, the magnetic block disengages from the mating block, and the linkage plate continues to move, so that the cap fits and seals with the new mold box. This avoids interference caused by the synchronous movement of the cap and the mold, achieves static sealing, and has a better sealing effect.

This invention belongs to the field of biodegradable plastic preparation technology, specifically relating to a method for preparing and applying bamboo powder-filled reinforced biodegradable plastics. Cellulose in bamboo powder is extracted using a eutectic solvent and then compounded with polylactic acid (PLA) and polybutylene adipate / terephthalate (PBAT) to prepare high-performance biodegradable plastics. Bamboo powder, as a natural and renewable resource, has broad application potential, but its use in plastics faces problems of poor dispersibility and compatibility. This invention treats bamboo powder with a eutectic solvent, breaking the hydrogen and chemical bonds between lignin, hemicellulose, and cellulose, thus improving the extraction efficiency and purity of the bamboo powder. The extracted bamboo powder cellulose, compounded with PLA and PBAT, significantly improves the mechanical and degradation properties of the plastic. This composite material exhibits excellent performance in tensile strength and impact resistance, can achieve full degradation, and can reduce the long-term environmental impact of plastic waste. This paper utilizes bamboo powder, PLA, and PBAT to prepare biodegradable plastics, which has the advantages of wide availability of raw materials, low cost, and easy film formation, providing a green and environmentally friendly material and innovative process for the development of biodegradable plastics.

This utility model relates to a high-efficiency and environmentally friendly biodegradable plastic foaming equipment, belonging to the field of biodegradable plastic technology. It includes a base plate and a foaming component. Before operation, a second drive motor is started, driving a rotating die head to switch between circular, square, or irregularly shaped mold openings as needed to form products of different shapes. After mold opening switching, a first drive motor drives a screw to rotate, conveying, mixing, and plasticizing the raw materials within the first housing. The foaming agent is also uniformly incorporated into the melt during this process. The plasticized material is extruded from the outlet, meeting the production needs of different products such as sheets, pipes, and films. The waste gas generated during the foaming process enters the second housing of the waste gas treatment component through a connecting pipe. Under the action of a catalyst, harmful components in the waste gas are decomposed, thereby achieving waste gas purification and meeting environmental emission requirements. This effectively reduces pollution while ensuring high-efficiency production.

The invention provides a polyhydroxyalkanoate composition, a preparation method of the polyhydroxyalkanoate composition, a biodegradable plastic product and application of the biodegradable plastic product. The biodegradable plastic product is prepared by the following method which comprises the following steps: mixing at least two copolymers of 3-hydroxybutyrate and 4-hydroxybutyrate, melting, extruding and granulating to obtain polyhydroxyalkanoate particles; the at least two copolymers of 3-hydroxybutyrate and 4-hydroxybutyrate at least comprise a block copolymer of which the mass percentage content of a 4-hydroxybutyrate structural unit is 0-20%, and at least comprise a random copolymer of 3-hydroxybutyrate and 4-hydroxybutyrate; forming the polyhydroxyalkanoate particles to obtain a preformed part; and carrying out post-treatment on the preformed part to obtain the biodegradable plastic product. The biodegradable plastic product has the advantages of excellent toughness, low migration volume, good processing molding performance and low odor.

The present invention relates to a biodegradable plastic resin composition, a molded product using same, and a manufacturing method therefor. The biodegradable plastic resin composition according to an embodiment of the present invention comprises a biodegradable plastic and a nanocellulose additive, and can provide a biodegradable plastic molded product having improved moldability by supplementing the low crystallinity and durability of the biodegradable plastic.

This invention relates to a method for preparing a biodegradable bio-based plastic storage box, belonging to the field of plastic product technology. The method includes the following steps: S1, preparation of bio-modified filler; S2, matrix compounding; S3, melt blending: adding the biodegradable matrix resin, toughening agent, compatibilizer, and the modified mixture A obtained in step S2 into a twin-screw extruder for melt blending extrusion, granulation, and obtaining bio-based composite material particles; S4, injection molding; S5, post-treatment. This method for preparing a biodegradable bio-based plastic storage box utilizes a specific process to treat Angelica dahurica and Pueraria lobata powder, inducing cross-linking of their macromolecular chains or activation of functional groups, resulting in stronger interfacial bonding with the subsequent PLA / PBAT matrix. Combined with the "skin-foamed core" structure formed by the multi-layer co-injection process, the storage box maintains lightweight while exhibiting significantly better impact resistance and load-bearing capacity than ordinary blended modified biodegradable plastic products.

A resilient, biodegradable staple for reversibly fastening textile materials such as garments is provided. The staple comprises an elongate connecting member with a retaining member at one end and a deformable fastening member at the other. Insertion into textile layers causes the fastening member to deform inward, allowing penetration. Upon passing through the fabric, the fastening member returns to its original shape to secure the textiles. The staples are made from biodegradable plastics such as polylactic acid (PLA) and may be provided in laterally connected strips via a water-soluble adhesive for use in a dedicated stapler device.

In a fully recyclable container and a method of manufacturing the same the container includes a cap, a shoulder, a body, a base, and a liner. The cap, the shoulder, and the base are made of biodegradable plastic by injection molding while the body is made of waterproof paper. The cap, the shoulder, and the base are detachably connected to form a housing of the container. The liner is formed inside the housing by blow molding of biodegradable plastic. The respective components of the container are completely made of biodegradable or bio-decomposable material and able to be disassembled for sorting and recycling. Thereby the fully recyclable container completely meets requirements of environmental protection and recycling.

The invention discloses a biodegradable composite material as well as a preparation method and application thereof. The biodegradable composite material is formed by laying and hot-pressing a multi-layer structure, when the multi-layer structure is laid, a hydrophobic fiber layer A, a filling fiber layer A, a PBAT film layer, a filling fiber layer B and a hydrophobic fiber layer B are sequentially arranged from top to bottom; the hydrophobic fiber layer A and the hydrophobic fiber layer B are prepared from 20-40 parts of natural plant fibers in total, and the filling fiber layer A and the filling fiber layer B are prepared from 10-20 parts of cereal crop straw fibers and 2-6 parts of PBAT in total; according to the invention, a lamination heat sealing process is adopted, complex melt blending and granulation processes are avoided, and the production process is simple and low in energy consumption; the main raw materials are from agricultural wastes and biodegradable plastics, are wide in source and low in cost, are particularly suitable for manufacturing seedling culture containers, are not damaged in transportation and stacking processes due to good strength, are convenient to tear during transplanting due to excellent toughness, and can be fused with soil and provide nutrients for seedlings after being degraded.

This invention discloses an environmentally friendly biodegradable plastic packaging material and its preparation method, belonging to the technical field of polymer biodegradable packaging materials. It aims to solve the problems of poor compatibility, low melt strength, and slow degradation of existing polylactic acid (PLA) blends. This invention uses PLA as a matrix, introduces a furanyl dicarboxylic acid-pentanediol-itaconic acid copolyester containing side-chain double bonds as a functionalized flexible component, and adds thiol-modified epoxidized soybean oil as a reactive compatibilizer. Chemical linkages between different polymer chains are achieved through reactive extrusion, constructing a cross-linked network structure of thioether bonds. The resulting packaging material maintains good mechanical properties while exhibiting excellent gas barrier properties and biodegradability.

This invention discloses a method and application for promoting granulation of anaerobic ammonia oxidation (ANAO) based on a biodegradable plastic carrier, belonging to the field of wastewater biological denitrification technology. The method uses polycaprolactone (PVC) as a functional material, which is pulverized to obtain granules and added to the ANAO reaction system. PVC, with its excellent biocompatibility and surface adhesion properties, can serve as a nucleation core for microbial aggregation. Simultaneously, it enhances the internal structural stability of the granules by stimulating the composition of extracellular polymers and the enrichment of functional microorganisms, thereby significantly accelerating the formation and growth of ANAO granular sludge. This invention has advantages such as simple operation, green and biodegradable materials, no risk of secondary pollution, and wide applicability, providing a novel and efficient enhancement strategy for the engineering application of ANAO processes.

The invention discloses a bamboo pulp paper-PHA double-sided composite soil biodegradable agricultural mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching materials. According to the mulching film, bamboo pulp paper is used as a base material, and a water-based PHA inner stable coating on a soil attaching surface and a PHA extrusion film layer on a wind and rain facing surface are firmly combined by utilizing a'same-family wet-to-heat 'glue-free composite process. The problems that a traditional paper film is poor in weather resistance and a biodegradable plastic film is prone to premature senility are solved. Compared with products in the market, the scheme abandons an adhesive and a fluorine-containing auxiliary agent which hinder degradation, and the tear-grade strength of the fiber can be realized only by homeotropic interface anchoring; in addition, the blocking and soil moisture preservation effects superior to those of a traditional thick coating can be achieved with less PHA dosage, and the water absorption is remarkably reduced; the material has excellent mechanical adaptability and photo-thermal adjusting function, is completely mineralized after being buried into soil, and really realizes perfect unification of high performance and full environmental protection.

This invention relates to the field of composite film technology, providing a high-transparency, high-temperature resistant, and biodegradable polypropylene mushroom film and bag, as well as a preparation method. This invention strictly controls the raw materials and proportions used in the outer, middle, and inner layers of the polypropylene mushroom film. Simultaneously, it adds biodegradable masterbatch to the outer, middle, and inner layers of the polypropylene mushroom film, enabling the transformation of traditional polypropylene plastic into a new generation of biodegradable plastic that is harmless to nature, without affecting the film's performance. The resulting high-transparency, high-temperature resistant, and biodegradable polypropylene mushroom film can degrade under light, heat, oxygen, and composting conditions, and can completely degrade into carbon dioxide and water, without producing microplastics, thus exhibiting good environmental friendliness. Furthermore, the film has high transparency, high strength, is not prone to ink smudging during printing, has low leaching, good heat-sealing properties, and good high-temperature resistance, and can be sterilized at 121℃, meeting the usage requirements of mushroom films and bags.

The invention relates to the technical field of high polymer material processing and biodegradable plastic, in particular to a preparation method of biodegradable polylactic acid plastic. The invention discloses a preparation method of biodegradable polylactic acid plastic. The polylactic acid plastic is composed of a polylactic acid matrix, an elastomer toughening phase, a nanocellulose enhancer, a reactive compatibilizer and a three-layer core-shell structure microencapsulated enzyme preparation. The preparation method comprises the steps of raw material pretreatment and master batch preparation, reactive melt blending, multi-stage hot stretching orientation and cooling forming, the microencapsulated enzyme preparation sequentially comprises a pH response layer, a temperature response layer and a polymer protection outer layer from inside to outside, and intelligent control over the material degradation behavior is achieved through a synergistic triggering mechanism. The product prepared by the invention has the characteristics of high tensile strength, high elongation at break, high impact strength, high thermal deformation temperature and controllable biodegradability, and effectively solves the technical problem that the toughness, heat resistance and controllable degradability of the polylactic acid material are difficult to consider at the same time.

This invention belongs to the field of chemical product purification technology, and relates to a continuous purification process for glycolide, an intermediate product in the production of biodegradable plastics. The process includes the following steps: 1) sequentially melting and dehydrating the intermediate glycolide; 2) mixing the melted and dehydrated glycolide with polyglycolic acid at a mass ratio of 20:1 to 25:1 to remove light components from the glycolide; 3) under vacuum, evaporating the glycolide from which light components have been removed to remove heavy components, obtaining refined glycolide; 4) a small portion of the refined glycolide is returned to step 3) for further heavy component removal, while the majority of the refined glycolide undergoes subsequent processing to obtain purified glycolide. This invention, through melt dehydration, mixing glycolide with fresh polyglycolic acid to remove light components, and evaporating to remove heavy components, consumes less solvent and can improve the yield of glycolide.

The invention discloses a bio-based degradable plastic preparation method, which comprises: adding polylactic acid into dichloromethane, stirring until the system is in a transparent state, dropwise adding into an activated cellulose dispersion liquid, stirring, adding graphene oxide and a glyoxal solution, continuously stirring, adjusting the system to be acidic, stirring in an ice-water bath, heating to 100-110 DEG C, vigorously stirring, and cooling to the room temperature, thereby obtaining the bio-based degradable plastic. Performing vacuum freeze drying and crushing to obtain activated polylactic acid; the preparation method comprises the following steps: adding montmorillonite into hydrochloric acid, adding sodium dithionite, stirring, filtering, washing, adding butyl titanate, carrying out ball milling, adding water, continuously grinding, dehydrating, drying, cooling and crushing to obtain activated montmorillonite; polystyrene, polyamide, a compatilizer, an antioxidant and activated polylactic acid are stirred, activated montmorillonite is added, stirring is performed, and a premix is obtained; and carrying out extrusion granulation on the premix, carrying out hot pressing and deflation on granules, and then maintaining the pressure at 5-10MPa for 1-5 minutes to obtain the bio-based degradable plastic.

This invention relates to the field of polymer packaging materials technology, and proposes an environmentally friendly biodegradable plastic packaging material and its preparation method. The environmentally friendly biodegradable plastic packaging material comprises the following components in parts by weight: PLA 30 parts, PBAT 60-90 parts, poly(ethylene-co-methyl acrylate-co-glycidyl methacrylate) 1-5 parts, filler 20-30 parts, and stabilizer 3-5 parts. The filler includes M5 fiber and epoxy-modified silica. This technical solution solves the problem of low strength in biodegradable plastic packaging materials in related technologies.