208 results about "Biodegradable plastic" patented technology

The invention discloses a biodegradable plastic and a preparation method thereof, belongs to the field of bioplastic preparation, and aims to solve the problem that the existing plastic is slow in degradation rate in a marine environment. The biodegradable plastic is prepared from the following components in percentage by weight: 50-80% of a biomass-based high polymer material; 10 to 35% of a degradable toughening agent; 1-5% of a photosensitizer; 2-10% of a microbial inducer; 1-5% of a processing aid; after the biomass degradable plastic is subjected to ultraviolet radiation for 7-15 days in a marine environment, initial cracks with the density being larger than or equal to 20 pieces / cm < 2 > appear on the surface, the initial cracks are broken into degradation units with the particle size being 5-20 mm after being subjected to mechanical impact of sea waves for 30-60 days, and the biological decomposition rate of the degradation units is larger than or equal to 90% within 6-12 months under the action of marine microorganisms; and no micro-plastic particles with the particle size of less than or equal to 1mm exist in the residual product. Through the synergistic effect of the photosensitizer and the microbial inducer, the degradation period in the marine environment is shortened, the degradation efficiency is improved, and the method is remarkably superior to the prior art.

The invention relates to the technical field of organic solid waste resourceful treatment, in particular to a method for enhancing degradation of biodegradable plastic compost based on white-rot fungi and manganese modified charcoal. According to the method, manganese modified charcoal and white-rot fungi are subjected to synergistic treatment, and the efficient method for intensively degrading the biodegradable plastic through aerobic composting is constructed. The method effectively overcomes the technical bottlenecks of slow degradation starting, long degradation period and easy generation of micro-plastic residues of the biodegradable plastic in traditional compost, and realizes rapid and thorough degradation of the biodegradable plastic. Besides, the method also promotes the conversion of humus precursor substances in the compost material and accelerates and stabilizes the synthesis of humus, so that the decomposition degree of the compost product is remarkably improved, and the quality and environmental safety of the final compost product are synchronously improved while the biodegradable plastic is efficiently degraded. And an efficient and reliable solution is provided for recycling of organic solid wastes and degradation of biodegradable plastic compost.

The invention discloses a bamboo powder reinforced and replaced biodegradable plastic and a preparation method thereof, and belongs to the technical field of biodegradable plastics. Comprising the following raw materials in parts by weight: 10-20 parts of modified bamboo powder, 45-55 parts of PBAT resin, 30-40 parts of polylactic acid, 3-5 parts of modified humic acid filler, 5-8 parts of epoxidized soybean oil, 0.3-0.5 part of an antioxidant, 0.3-0.6 part of a light stabilizer, 4-6 parts of a compatilizer and 0.3-0.5 part of an epoxy chain extender. According to the bamboo powder reinforced and replaced biodegradable plastic and the preparation method thereof, the modified bamboo powder and the humic acid filler are compounded with the PBAT, the polylactic acid and other raw materials, so that the cost is reduced and the environmental protection property is improved by utilizing the bamboo powder, the humic acid and other renewable resources, and the compatibility with a matrix is enhanced through modification; the antioxidant, the light stabilizer and the like are matched, so that the mechanical property is improved, and multiple advantages of low cost, high performance and degradability are realized.

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 present invention relates to a hot-melt adhesive composition comprising a biodegradable plastic, a thermoplastic polymer, a tackifier and a plasticizer, wherein the biodegradable plastic includes polyhydroxyalkanoate (PHA). The hot-melt adhesive composition according to the present invention has lower viscosity and higher adhesiveness compared to a petroleum-based hot-melt composition, and can be used as an eco-friendly hot-melt adhesive composition having physical properties corresponding to an excellent recycling criteria grade under recyclability assessment criteria.

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.

To provide a new microorganism capable of decomposing biodegradable plastic, especially polylactic acid (PLA) or polybutylene adipate terephthalate (PBAT).　The microorganism according to the present disclosure belongs to the family Bacillaceae, and has been deposited under Accession No. NITE BP-04083.

To provide a new microorganism capable of decomposing biodegradable plastic, especially polylactic acid (PLA) or polybutylene adipate terephthalate (PBAT).SOLUTION: The microorganism according to the present disclosure belongs to the family Bacillaceae, and has been deposited under Accession No. NITE BP-04083.SELECTED DRAWING: Figure 3

The invention relates to the technical field of degradable plastics, in particular to a preparation process of a PET polyester degradable plastic sheet. The PET polyester degradable plastic sheet is prepared from the following raw materials in parts by mass: 80 to 140 parts of PET resin, 10 to 30 parts of PBAT resin, 5 to 15 parts of polylactic acid, 5 to 15 parts of degradation aid, 10 to 30 parts of inorganic filler, 1 to 3 parts of graphene oxide, 1 to 2 parts of zinc nitrate, 0.1 to 1 part of 2-methylimidazole, 1 to 3 parts of antioxidant, 10 to 20 parts of flame retardant, 1 to 3 parts of stabilizer and 1 to 2 parts of lubricant. The flame-retardant anti-dripping PET material has the advantages that the flame-retardant anti-dripping effect of the PET material can be obviously improved, the good mechanical property is kept, the biodegradability is obvious, and the market benefit and the social benefit are wide.

The invention discloses a marine land full-natural-domain biodegradable plastic and a method for preparing the biodegradable plastic, and relates to the technical field of biodegradable plastics. Polyhydroxyalkanoate, polylactic acid and poly (butylene succinate) are used as main matrixes of the material, modified alginate gel is innovatively introduced, and the biodegradable plastic is prepared. The gel has photo-thermal and ionic characteristics, and under the condition of land illumination, the photo-thermal effect of the quantum dots triggers the gel to shrink and release lipase to accelerate hydrolysis; in a marine environment, sodium ion replacement promotes gel to be disintegrated and continuously releases enzyme molecules, the gel, matrix resin, natural fibers and a plasticizer are subjected to twin-screw melt blending extrusion, and the biodegradable plastic is prepared. The technical problems of response lag, insufficient enzyme activity protection and low degradation efficiency of traditional biodegradable plastics in a complex natural environment are effectively solved, and self-adaptive efficient degradation in sea and land environments is realized.

The invention discloses a biodegradable plastic tray and a preparation method thereof.The method comprises the steps that S1, appropriate plastic raw materials are selected according to the use requirement of the tray, the plastic raw materials are dried, moisture and volatile matter in the raw materials are removed, the plastic raw materials and an additive are fully stirred and mixed through a stirrer, and a mixture is obtained; and the additive is uniformly dispersed in the plastic raw material. According to the biodegradable plastic tray and the preparation method, different raw materials, equipment and the like are selected according to different tray requirements and design specifications, quality detection is conducted on the tray in the preparation process, and the production quality of the tray is improved; and intelligent monitoring and predictive maintenance of the production equipment are realized through the intelligent monitoring module, so that the failure shutdown time of the equipment is shortened, and the production continuity is improved.

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 a P-N synergistic chitosan bio-based flame retardant and a preparation method thereof.The preparation method comprises the steps that chitosan is heated and dissolved in an acetic acid solution, nitrogen is introduced, an initiator is added, then a DOPO derivative with double bonds at the tail end, MDO and AA are added for a polymerization reaction, and the flame retardant is prepared. An environment-friendly biological material chitosan is used as a base material, a DOPO derivative with a P-N flame retardant property and a terminal double bond is firstly prepared, then the DOPO derivative, degradable MDO formed through ring opening polymerization and acrylic acid are jointly subjected to graft polymerization on the surface of the chitosan, and a formed macromolecular polymer chain has high flame retardance and can be degraded into a low-molecular structure; the chitosan-based macromolecule containing PCL and PAA chain segments has a biological environmental protection property, and when the chitosan-based macromolecule containing PCL and PAA chain segments is added into degradable plastics such as PLA, the chitosan-based macromolecule can also achieve good compatibility with plastic particles, so that the degradable plastics can be endowed with certain flame retardant property, and meanwhile, the chitosan-based macromolecule has good compatibility with the plastic particles, so that the degradation rate can be kept unaffected.

The utility model discloses a cooling device for full biodegradable plastic film production, which comprises a lower air bellow, support legs are fixedly arranged below the lower air bellow, an air cooler is communicated below the lower air bellow, ventilation pipes are communicated at four corners above the lower air bellow, an upper air bellow is communicated above the ventilation pipes, and a lower air bellow is communicated above the upper air bellow. Clamping and cooling mechanisms used for smoothing plastic films are arranged between the lower air box and the upper air box, a rolling and deviation correcting mechanism used for correcting deviation of the plastic films is arranged between the lower air box and the upper air box, and the two clamping and cooling mechanisms are arranged, so that the plastic films can be clamped, straightened and conveyed, and the situation that the plastic films are folded and overlapped is prevented; and when the plastic film transversely deviates on the clamping and cooling mechanism, the plastic film can be kept in the winding roller all the time through the winding deviation correcting mechanism, the situation that the plastic film runs out of the winding roller and cannot be wound is prevented, and the whole device is convenient to operate, does not need manual operation and is high in working efficiency.

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 belongs to the technical field of biodegradable plastics, and provides a biodegradable film as well as a preparation method and application thereof. The biodegradable film disclosed by the invention is prepared from the following raw materials in 100 parts by weight: 74 to 99.998 parts of biodegradable polyester; 0.001 to 15 parts of gutta-percha; 0-2 parts of a compatilizer; 0.001 to 2 parts of an anti-blocking agent; 0-2 parts of a coupling agent; 0-2 parts of a dispersant; and 0-8 parts of color master batch. The biodegradable polyester is used as a raw material, and the gutta-percha is used as a functional aid, so that the biodegradable film has excellent ultraviolet aging resistance, mechanical property, barrier property and processability; the film mulching safety period of crops can be obviously prolonged, and the method can adapt to different soil conditions and farming operation. The obtained biodegradable film is green and safe in processing and using processes, can be used in the field of agricultural plastic mulching films, and can also be used in the fields of shopping bags, garbage bags, food packaging, vegetable greenhouse films, injection molding plates, injection molding sheets and the like.

The utility model discloses a raw material screening device for degradable plastic film bag processing, and relates to the technical field of degradable plastic film bag processing, the raw material screening device comprises a box body, a first fixing ring, a second fixing ring and a third fixing ring are uniformly and fixedly installed in the middle of the box body, and screening nets are fixedly installed in the middle of the first fixing ring, the middle of the second fixing ring and the middle of the third fixing ring. According to the multi-layer screening device, during screening, raw materials can be guided into the box body through the material guiding pipe, firstly fall into the screening net in the middle of the first fixing ring and are sequentially screened downwards, meshes of each layer of screening net are gradually reduced so that the raw materials can be subjected to multi-layer screening, air can be blown into the corresponding cavity through the ventilation pipe in the mode of externally connecting a pipeline in the process, and the screening efficiency is improved. And the frequency is controlled through the air valve, and the motor capable of driving the rotating shaft and the scraping plate on the side face to rotate is matched, so that large particles blocked in meshes and plastic particles stacked together can be scattered and stirred to be always kept in a motion state, the screening efficiency can be greatly improved, and the screening net is prevented from being blocked.

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.

The application relates to the technical field of plastic bag detection, and discloses a biodegradable plastic bag pull degree detection device, which comprises a detection seat, fixed frames are arranged at the four corner positions of the detection seat, a detection table is fixedly installed at the upper end of the fixed frame, a detection shaft is rotationally installed at the center position of the detection table, the bottom of the detection shaft penetrates through the detection table and is rotationally arranged on the detection seat, a detection plate is fixedly installed at the upper end of the detection shaft and penetrates through the detection table, a bottom edge clamping mechanism is arranged on the detection plate, a plurality of movable blocks are hingedly installed at the four corner positions of the edge of the detection table, a movable shaft is rotationally installed in the movable block, a swing shaft is fixedly installed at one end of the inner side of the movable shaft, a handle clamping mechanism is arranged at the end of the swing shaft, a pulling mechanism is arranged on the detection table, and a rotating mechanism is further arranged on the detection seat. The plastic bag in the clamped state can be pulled at multiple angles on the horizontal plane, the detection precision is ensured, and the simultaneous detection of multiple plastic bags can be met.

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 invention relates to a degradable hydrophobic film as well as a preparation method and application thereof. The material of the degradable hydrophobic film comprises biodegradable plastic, the degradable hydrophobic film is provided with pores located in the degradable hydrophobic film, the surface of the degradable hydrophobic film is provided with a protruding structure, the protruding structure comprises bosses arranged at intervals, and the top area of the bosses is smaller than the bottom area of the bosses. The degradable hydrophobic film has a special structure, so that the contact angle of the surface of the degradable hydrophobic film can be increased, and the degradable hydrophobic film has better hydrophobic performance. Meanwhile, the material of the degradable hydrophobic film comprises biodegradable plastic, so that the degradable hydrophobic film has biodegradable capability and is environment-friendly. Furthermore, the degradable hydrophobic film also has better light transmittance, and can be suitable for a glass cover plate of a photovoltaic module.

The utility model relates to the field of film production, in particular to film blowing equipment suitable for full biodegradable plastics, which comprises a bottom plate, the top of the bottom plate is connected with a first support through a bolt, and the top of the first support is connected with a second support through a bolt. Through cooperation of the fan, the long plate, the air blowing pipe, the mesh enclosure, the static electricity eliminator, the air outlet head and the air blowing ring, the film blowing device has the advantage of rapidly cooling a blown film, the blown film firstly passes through the static electricity eliminator, static electricity on the surface of the film is eliminated, dust is made to fall off more easily, it is guaranteed that the surface of the film is not prone to adsorbing dust, and the film blowing effect is better. Air is conveyed into an air blowing ring through a fan and an air blowing pipe to be blown out by an air outlet head, so that the blown film is quickly cooled, and meanwhile, dust on the surface of the film can be easily blown off; and through cooperation of a U-shaped plate, an electric telescopic rod, a cutter, a movable frame and a lower pressing roller, the film shearing device has the advantage that the film can be sheared.

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 tensile double-faced adhesive tape and a manufacturing method thereof. The tensile double-faced adhesive tape sequentially comprises a first protective layer, a first tensile reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile reinforcing layer and a second protective layer from top to bottom, the first tensile reinforcing layer and the second tensile reinforcing layer are high-strength aramid fiber woven meshes; the double-faced adhesive tape has the beneficial effects that the high-strength aramid fiber woven meshes are arranged in the double-faced adhesive tape structure to serve as the first tensile reinforcing layer and the second tensile reinforcing layer, so that the tensile capacity of the double-faced adhesive tape is remarkably improved; the first protective layer and the second protective layer are made of environment-friendly degradable plastic films, so that the pollution of traditional plastic films to the environment is reduced, and the current green and environment-friendly development concept is met; after being discarded, the product cannot be left in the environment for a long time, so that the negative influence on an ecological system is reduced, and a contribution is made to sustainable development.

The invention relates to a method for regulating and controlling the degradation rate of a biodegradable material film, which comprises the following steps of: grafting one or more grafting monomers which have initiation sites and contain hydrophilic groups or do not contain hydrophilic groups on the surface of the biodegradable material film, modifying the surface of the biodegradable material film, and regulating and controlling the degradation rate of the biodegradable material film in a natural environment. The degradation period is matched with the application period; wherein in order to accelerate the degradation rate, a grafting monomer containing a hydrophilic group is selected for grafting; in order to reduce the degradation rate, grafting monomers without hydrophilic groups are selected for grafting. According to the method, the environmental friendliness of the biodegradable material is enhanced, meanwhile, the barrier property of the material is improved, and a new way is provided for application of biodegradable plastics.

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 utility model relates to the technical field of injection molds, in particular to a degradable plastic injection mold which comprises a workbench, an upper mold base is fixedly connected to one side of the top end of the workbench, a lower mold base is slidably connected to the upper surface of the workbench, a cooling mechanism is fixedly connected to the rear end face of the lower mold base, and the cooling mechanism comprises a cooling plate. A liquid storage cavity is formed in the cooling plate, a cooling pipe is fixedly connected to the top end of the cooling plate, a supporting rod is slidably connected to the middle of the cooling pipe, a connecting rod is fixedly connected to the bottom end of the supporting rod, sealing plates are fixedly connected to the top and the bottom of the connecting rod, sealing rings are fixedly connected to the outer sides of the sealing plates, and cooling fins are fixedly connected to the exterior of the cooling pipe. The rear end face of the cooling plate is fixedly connected with an air cooling mechanism, the air cooling mechanism comprises a supporting frame, cooling liquid is rapidly removed when cooling is not needed, the liquidity of molten plastic is guaranteed, and the product quality is improved.

The application discloses a kind of full biodegradable straw-plastic composite material and preparation method thereof.Full biodegradable straw-plastic composite material is composed of the following components by mass percentage: straw fiber 80-95% carbon dioxide-based polyester-polycarbonate staple fiber (PPC-P) 5-20%.The application finds through a large number of experiments that because there is physical cross between straw fiber and PPC-P fiber, so processing does not need to add compatilizer and coupling agent, and the use amount of PPC-P fiber can be greatly reduced, only 5%-20% of the use amount, thereby greatly reducing the cost of wood-plastic composite material.The resin used in the application is degradable carbon dioxide-based-polycarbonate, so that the composite material has full biodegradability.Carbon dioxide-based-polycarbonate is prepared from carbon dioxide, and the application reduces carbon dioxide emission.

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.