965 results about "Plasticulture" patented technology

The invention provides a method for preparing a single-material VMPE recoverable hose through dynamic temperature control multi-layer co-extrusion. The method comprises the steps that infrared temperature measurement modules are installed on all sections of an extruder respectively to construct a dynamic temperature control system; feeding the pretreated raw materials into a corresponding extruder, and adjusting a heating device and a cooling device of a charging barrel of the extruder in real time according to a preset extrusion temperature allowable range through a dynamic temperature control system to obtain a plasticized melt; carrying out bonding treatment on the plasticized melt by utilizing an ultrasonic vibration composite technology to obtain a multi-layer reinforced melt; detecting the thickness of the pipe wall of the multi-layer reinforced melt through a hyperspectral imager and judging whether the thickness of the pipe wall is qualified or not; if not, pipe wall thickness deviation data are fed back to a dynamic temperature control system and an extruder control system to conduct linkage adjustment on extrusion parameters; and if the multi-layer reinforced melt is qualified, cooling shaping and fixed-length cutting treatment are conducted on the multi-layer reinforced melt, the finished recoverable hose is obtained, and the hose forming precision and the recovery performance are effectively improved.

The invention relates to the technical field of composite materials, in particular to a heat and sound insulation PVB intermediate film and a preparation method thereof. The problem that a PVB intermediate film is insufficient in heat insulation and aging resistance is solved. The preparation method comprises the following steps: pre-plasticizing PVB resin, shearing and mixing the pre-plasticized PVB resin and silane coupling agent modified enhanced nano cellulose, sequentially adding additives such as a plasticizer, molybdenum trioxide loaded lanthanum hexaboride, a composite light stabilizer and modified cerium oxide, and carrying out tape casting and hot pressing treatment to obtain the PVB intermediate film. Wherein the modified lanthanum hexaboride enhances infrared ray shielding, the composite light stabilizer and the modified cerium oxide synergistically improve the aging resistance, all the components are subjected to substance cooperation and process cooperation, comprehensive improvement of heat insulation, sound insulation and aging resistance of the PVB intermediate film is achieved, and the PVB intermediate film is suitable for the field of high-strength building glass.

The invention discloses a plasticizing industry intelligent logistics scheduling method based on order prediction, and relates to the field of plasticizing product logistics, and the method comprises the steps: predicting the order demands of a plurality of clients for plasticizing products in a preset time window based on historical data, and constructing a knowledge graph based on client nodes, order nodes and mark nodes corresponding to orders; in the knowledge graph, attribute parameters are added to each mark node, and the attribute parameters comprise the melt flow rate, the color grade and the additive grade; constructing a switching scoring function based on the attribute parameters; on the premise of ensuring that all orders are delivered in a preset time window, constructing a total objective function which comprehensively considers the total driving mileage, the vehicle cleaning cost score and the customer cleaning cost score; and by taking minimization of the total objective function as an objective, generating a scheduling scheme by adopting an optimization algorithm. According to the invention, the problem of cross contamination caused by neglect of trademark replacement in a traditional scheduling method is effectively solved.

The invention discloses a starch-based full-biodegradable mulching film capable of being rapidly degraded and a preparation method of the starch-based full-biodegradable mulching film, and belongs to the technical field of degradable materials.The preparation method comprises the steps of tea polyphenol calcium salt preparation, filler preparation, thermal plasticization and film preparation. The preparation of the filler comprises the following steps: adding silicon dioxide into a polyacrylic acid aqueous solution, stirring and centrifuging at room temperature, taking a precipitate, adding the precipitate into a polyvinylpyrrolidone aqueous solution, adjusting the pH value to 3-3.5, stirring and centrifuging at room temperature, taking the precipitate, adding the precipitate into the polyacrylic acid aqueous solution, adjusting the pH value to 3-3.5, stirring and centrifuging at room temperature, taking the precipitate, and freeze-drying to obtain the filler. The starch-based full-biodegradable mulching film prepared by the preparation method disclosed by the invention is good in processability, waterproofness and heat resistance and high in mechanical strength, the problem of phase separation does not occur in preparation, the problem of plasticizer precipitation does not easily occur in long-term use, and rapid degradation can be realized.

The invention relates to the technical field of co-extrusion molding, in particular to a multi-layer co-extrusion molding method of a building composite membrane material, which comprises the following steps: melting and plasticizing a polymer mixture of each layer, and then synchronously co-extruding to obtain a composite tubular melt blank; injecting gas into the composite tubular melt blank and drawing to obtain a composite tubular bubble; judging whether the preparation of the composite tubular vesicle reaches the standard or not according to the vesicle form characterization value; cooling and curing the composite tubular film bubbles reaching the standard to obtain a composite tubular film; when it is judged that the preparation of the composite tubular membrane does not reach the standard according to the circumferential cooling uniformity characterization value, an adjustment strategy when the preparation of the composite tubular membrane does not reach the standard is determined according to the circumferential wind speed extreme value ratio of the cooling wind ring; and flattening and rolling the composite tubular membrane reaching the standard to obtain the composite membrane material for the building. The co-extrusion forming efficiency of the composite membrane material for the building is improved.

The invention relates to the technical field of design and processing of PVC (polyvinyl chloride) composite materials, in particular to a multi-layer composite processing method of a PVC decorative film based on heat resistance, which comprises the following steps: firstly, preparing PVC resin powder, various additives and a nano modified additive, premixing and mainly mixing the raw materials, uniformly mixing under the protection of nitrogen, plasticizing and extruding by using a double-screw extruder, and carrying out extrusion molding to obtain the PVC decorative film based on heat resistance. Surface treatment including plasma and chemical etching is carried out after extrusion, then a modified polyurethane bonding layer containing a silane coupling agent is coated and compounded with a micro-nano structure PET decorative film, ultrasonic vibration is applied, then hot-pressing shaping is carried out, a hot-pressing roller is provided with micro textures, finally cooling and rolling are carried out, and all the steps have specific parameters. According to the method, the effect is remarkable, the heat resistance of the PVC decorative film is greatly improved, the heat deformation temperature is increased, the processing performance is optimized, the production efficiency is improved, the bonding and compounding effect is enhanced, the decorative layer is not prone to falling off, the environmental protection property and the product attractiveness are further improved, and the market competitiveness is enhanced.

The invention provides a recovery device for building waste plastic building materials, and relates to the field of waste recovery devices.The recovery device comprises a feeding mechanism, a crushing mechanism, a separating mechanism and a melting granulation mechanism, and further comprises a crushing system and an electric control system; according to the crushing system, a primary crushing unit is driven by a first variable frequency motor; the secondary crushing unit is arranged at the discharging end of the primary crushing unit and is driven by a second variable frequency motor; the screening unit is arranged below the secondary crushing unit; wherein the electric control system is electrically connected with the first variable-frequency motor and the second variable-frequency motor and used for independently controlling the rotating speeds of the first variable-frequency motor and the second variable-frequency motor so as to drive the primary crushing unit and the secondary crushing unit to do differential relative motion, and the screening unit is used for returning substandard materials to the primary crushing unit to be crushed again. Multi-stage differential crushing and intelligent closed-loop control are adopted, airflow separation and magnetic separation impurity removal are combined, efficient and energy-saving production is achieved through segmented melting and plasticizing, and the treatment efficiency and the purity of a finished product are improved through an automatic system.

The embodiment of the invention relates to the technical field of artificial intelligence, and provides a supply chain management method and system based on artificial intelligence. The method comprises the following steps: collecting multi-dimensional supply chain data in real time; and carrying out dynamic quality evaluation on the data, automatically correcting data deviation by adopting an isolated forest abnormal value restoration model in combination with an evaluation result, and obtaining corrected data. And based on plasticizing industry chain platform business scenes, identifying transaction, inventory, logistics and quality detection subjects matched with the scenes in the correction data, aggregating the data according to the scenes and the corresponding subjects, forming a supply chain data set of each scene, and establishing and dynamically updating a supply chain data lake. And extracting supply chain operation characteristics of each scene from the data lake through a space-time diagram convolution model, and predicting a demand change trend of each scene according to the supply chain operation characteristics. The trend input graph attention generative adversarial network is used to predict multi-level inventory distribution, then each scene inventory management scheme is generated, dynamic supply chain management of each business scene is realized, and the supply chain data quality and management degree are improved.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

The invention relates to the technical field of plastic films, in particular to an antibacterial degradable film and a preparation method thereof. The problem that a traditional degradable film is poor in antibacterial property and mechanical property is solved. The film is prepared from the following raw materials: PLA, PBS, PHA, PCL, modified nanocellulose, an antibacterial agent, composite antibacterial particles and maleic anhydride grafted PLA. The preparation method comprises the following steps: preparing functional master batches from silane coupling agent modified nano-crystalline cellulose and PLA, preparing antibacterial master batches from ZIF-8 loaded tea polyphenol antibacterial agent, mesoporous silica loaded chitosan composite antibacterial particles and PBS, adding the rest of matrix resin, functional master batches, antibacterial master batches and compatilizer into an extruder step by step, and carrying out extrusion molding to obtain the composite antibacterial material. And after mixing, plasticizing and exhausting, blow-molding to form a film, thereby obtaining the antibacterial degradable film. The mechanical property is enhanced through the functional master batch, and the composite antibacterial system has synergistic interaction, so that the film has excellent antibacterial property and mechanical property on the basis of degradability.

The invention belongs to the technical field of photovoltaic backboards, and particularly relates to a high-reflection integrally-formed backboard for a single-glass assembly and a preparation method thereof.The preparation method comprises the following steps that S1, a PET film base material is provided, plasma surface treatment is conducted, then polyurethane coating is coated on the two sides to form an outer-layer weather-proof fluorine coating and an inner-layer functional coating respectively, and the outer-layer weather-proof fluorine coating and the inner-layer functional coating are formed; a CPC backboard base material is obtained; s2, white high-reflection EVA granules are fused and plasticized, a white EVA adhesive film is obtained through extrusion of a hanger type T-shaped flat die head, then the white EVA adhesive film is compounded with the inner functional coating of the CPC backboard base material, and a firm complex without a definite physical interface is obtained through rolling; s3, cooling the composite body through at least two stages of cooling rollers to obtain a coiled material; and S4, the coiled material is irradiated, and the high-reflection integrally-formed backboard is obtained.

The invention discloses a novel BOPP (biaxially-oriented polypropylene) pearlized film loaded with a composite antibacterial material as well as a preparation method and application of the novel BOPP pearlized film, and the specific scheme is as follows: a KH550 coupling agent is hydrolyzed, a hydrolysate is modified on nano titanium dioxide (TiO2) particles, a natural antibacterial material eugenol (Eug) is brominated by a substitution reaction, and an Eug-TiO2 composite antibacterial material is further prepared based on nucleophilic substitution. And finally, carrying out melting plasticizing, extrusion casting and two-way stretching on polypropylene and pearlescent master batch to prepare the novel BOPP antibacterial pearlescent film, so that the strong activity, high stability, long action time, safety and environmental protection of the antibacterial process of the BOPP pearlescent film are realized, the added value attribute of the BOPP product is improved, and the application scene of the BOPP pearlescent film is expanded.

Disclosed is a deep eutectic solvent production method, which involves the selection of compounds that receive hydrogen bonds and give hydrogen bonds in such a way that the deep eutectic solutions desired to be used in the application of wet or dry plasticization method to polymers, and a plastic manufactured in accordance with this production method.

The invention relates to a process for realizing uniform foaming of an elastic rotating body through temperature gradient control, in particular to an elastic rotating body foaming forming process which comprises the following steps: S1, raw material pretreatment and internal mixing: adopting a blend of POE (Polyolefin Elastomer) and EPDM (Ethylene-Propylene-Diene Monomer) as a main body material, mixing POE and EPDM according to a mass ratio of 6: 4-8: 2, and carrying out extrusion molding; adding 3%-15% of an anti-shrinking agent, 8%-20% of talcum powder and 5%-12% of calcium carbonate as fillers, and mixing and plasticizing for 8-12 minutes through an internal mixer at the temperature of 80-100 DEG C and the rotor rotating speed of 30-50 rpm. According to the foaming forming process of the elastic rotating body, the shaping pipe and the built-in heating pipe are arranged in the middle of the mold cavity, so that the temperature of the middle of the mold cavity is 1-3 DEG C higher than that of the upper and lower areas, and therefore, an accurate axial temperature gradient is formed, the decomposition rate of a foaming agent and the material curing process are effectively balanced, and shrinkage deformation caused by uneven temperature is inhibited.

The invention discloses a rod feeding type stirring friction additive manufacturing device capable of continuously providing an upsetting force, relates to the technical field of additive manufacturing, and aims to solve the problems that when an existing stirring friction deposition additive manufacturing device adopts a rod for feeding, the upsetting force is easy to interrupt, the feeding continuity is poor, and the production efficiency is high. The internal tissue compactness and the external geometric accuracy of the component are further influenced. The device comprises a supporting shell, a stirring and plasticizing assembly, a feeding driving assembly, a storing and supplying assembly, a bar pushing piece and a bar with a matching structure. Continuous feeding is achieved through intermittent rotation of the storing and feeding assembly, rotary motion is converted into axial feeding of bars through transmission of a matched structure of the feeding driving assembly so as to provide continuous upsetting force, and the material plasticizing and mixing effect and the mechanism overload protection capacity are improved in cooperation with an elastic material processing piece of the stirring and plasticizing assembly. According to the invention, the continuity of bar feeding, plasticizing and depositing processes is realized, and the quality and the production efficiency of additive manufacturing components are effectively improved.

The invention discloses a method for improving tiger wrinkle defects of a polypropylene composite material injection molding product. The method comprises the following steps: firstly, melting and plasticizing a blended polypropylene composite material, and then applying a rotation and reciprocating oscillation composite shearing external field on a plasticized blend melt to carry out disentanglement treatment on the plasticized blend melt, the low-entanglement-degree polypropylene composite material is subjected to injection molding to obtain a workpiece with obviously improved tiger skin patterns on the surface. According to the method disclosed by the invention, a shearing external field compounded by rotation and reciprocating oscillation is applied to a blend melt to destroy an entanglement network of a molecular chain, so that not only is the molecular chain effectively disentangled, but also a low-entanglement state is retained in granules, the viscosity of the melt is greatly reduced during subsequent injection molding, and the flowability is remarkably enhanced; and the occurrence of unstable flow in the mold filling process is delayed, so that the tiger skin defect on the surface of a polypropylene composite material injection molding product can be greatly improved on the premise that the good mechanical property of the product can be maintained.

The invention relates to the technical field of foaming materials, in particular to a shoe material preparation process for finished shoes based on supercritical physical foaming and the finished shoes. The preparation method comprises the following steps: 1) weighing a matrix, octadecyl polyhedral oligomeric silsesquioxane, an active group-containing styrene-acrylonitrile copolymer, a polydimethylsiloxane block copolymer, an epoxy functional group-containing olefin copolymer, a nano silicon dioxide dispersion and a processing aid, uniformly mixing, blending, extruding, granulating and drying to obtain a blended material, wherein the matrix, the octadecyl polyhedral oligomeric silsesquioxane, the active group-containing styrene-acrylonitrile copolymer, the polydimethylsiloxane block copolymer, the epoxy functional group-containing olefin copolymer, the nano silicon dioxide dispersion and the processing aid are mixed uniformly; the preparation method comprises the following steps of (1) preparing a polymer, (2) plasticizing the blended material to form a preformed blank, injecting supercritical gas, and fully dissolving the supercritical fluid in the polymer at the temperature of 150-180 DEG C and the pressure of 10-20MPa for 1-3 hours, (3) reducing the pressure to normal pressure within 10 seconds at the pressure reduction rate of less than or equal to 2MPa / s, and (4) cooling and shaping at the temperature of 60-80 DEG C to obtain the shoe material.

The invention discloses plastic pipeline particles prepared from waste incineration fly ash and a preparation method of the plastic pipeline particles. The particles are prepared from the following raw materials in parts by weight: 5-25 parts of PE, 20-100 parts of superfine calcium carbonate, 1-5 parts of needle-like wollastonite, 1-5 parts of chopped carbon fibers, 1-15 parts of rutile type titanium dioxide, 10-75 parts of waste incineration fly ash, 1-20 parts of paraffin, 0.2-5 parts of a coupling agent and 0.5-10 parts of a dispersing agent. The preparation method comprises the following steps: 1, cleaning and airing the fly ash, and crushing and grinding the fly ash into 600-1250-mesh powder P; 2, mixing the powder P with inorganic fillers such as superfine calcium carbonate at a high speed of 100-130 DEG C to obtain a composite filler M; 3, mixing and modifying the filler M with a dispersing agent and a coupling agent at a high speed to obtain modified powder MP; 4, MP, PE and paraffin are mixed and plasticized at a high speed, and single-screw extrusion granulation is performed. The particles achieve fly ash recycling and are excellent in processability, the prepared PE pipeline is high in strength, resistant to corrosion and long in service life and can be used as an industrial or municipal sewage pipeline, and the preparation method is convenient, fast and efficient.

The invention belongs to the technical field of biomass composite material processing, and discloses a plant fiber-polymer composite material and a preparation method thereof. The plant fiber-polymer composite material is prepared from the following raw materials in parts by mass through plasticizing extrusion molding: 50 to 88 parts of plant fibers, 0.5 to 8 parts of a biomass cross-linking agent, 0.5 to 5 parts of a low-temperature water-soluble polymer, 10 to 50 parts of water and 0.05 to 3 parts of metal ions, wherein the metal ions and the biomass cross-linking agent form a reversible cross-linked network in the system through coordination; due to the existence of the reversible cross-linked network, the composite material can be plasticized and continuously extruded and molded under the shearing action at the temperature of 20-70 DEG C. The metal ion-biomass cross-linking agent coordination network provides high structural strength in a static state and is reversibly dissociated in a shear field, so that shear-driven plasticizing of a high-viscosity and high-fiber-content system in a low-temperature interval of 20-70 DEG C is realized.

The invention provides a high-strength corrosion-resistant CPVC plate and a preparation method thereof, and belongs to the technical field of high polymer materials, the preparation method comprises the following steps: S1, preparing Si-MBS; s2, mixing CPVC resin powder, Si-MBS, chlorinated polyethylene, a stabilizer, a processing aid, a lubricant and a coupling agent-hollow microsphere, melting, plasticizing, extruding, calendaring to form a plate, and cooling and shaping to obtain a CPVC base material; and S3, spraying the coating slurry containing ZIF-67 / GO-coated BTA / PEI powder on the surface of the CPVC base material, vacuumizing, and curing to obtain the high-strength corrosion-resistant CPVC plate. The overall strength and impact resistance can be improved, and meanwhile the overall corrosion resistance is improved.

The utility model discloses extrusion equipment which comprises a machine barrel and a screw rod, the machine barrel is provided with a plurality of sets of bidirectional cooling flow channels which are sequentially distributed from front to back, each set of bidirectional cooling flow channel spirally extends to form a first cooling flow channel and a second cooling flow channel from front to back, and the first cooling flow channels and the second cooling flow channels are alternately arranged in the axial direction of the machine barrel from front to back; the extrusion equipment further comprises a temperature control system, the temperature control system comprises a plurality of heaters, a plurality of fans, a first constant-temperature water tank communicated with the multiple sets of bidirectional cooling flow channels and a second constant-temperature water tank communicated with the cooling holes, and the first constant-temperature water tank is communicated with the multiple sets of bidirectional cooling flow channels. The machine barrel is sequentially divided into a plurality of areas from front to back, and each area is provided with a set of bidirectional cooling flow channels, at least one heater and at least one fan. The temperature of the machine barrel and the temperature of the screw are controlled through the heater in an air cooling and water cooling mode, and it is guaranteed that the extrusion equipment stably and efficiently extrudes fully-plasticized materials in a high-yield mode.

The invention discloses a continuous foaming composite process for a pearl wool coiled material and a waste gas recovery system thereof, and belongs to the technical field of pearl wool processing. Aiming at the problems of low efficiency and waste gas pollution of a traditional intermittent process, the process realizes continuous production through raw material selection (the melt index of LDPE is 1.0-2.5 g / 10min), drying and mixing pretreatment, melting and plasticizing through a twin-screw extruder, injection of foaming agents such as butane under the pressure of 8-12MPa, extrusion foaming at a die head of 140-160 DEG C and combination of air-cooling and water-cooling shaping. The compounding link comprises multiple processes such as hot pressing and co-extrusion to adapt to different base materials, after-treatment is conducted through trimming, taper tension coiling and standing stress release, the product density fluctuation is + / -3%, and the peel strength is larger than or equal to 3 N / cm. According to the waste gas recovery system, negative pressure collection is conducted through a closed gas collecting hood, indirect cooling and alkali liquor spraying pretreatment are conducted, activated carbon adsorption concentration and catalytic combustion purification are conducted, the VOCs removal rate is larger than or equal to 98%, the emission concentration is smaller than or equal to 50 mg / m < 3 >, and efficient production and environmental protection benefits are achieved.

The invention relates to a preparation technology of a multifunctional plastic clothes hanger through cooperation of degradable color master batches and nitrogen filling injection molding, and belongs to the technical field of plastic products. Adding the polylactic acid, the styrene-acrylonitrile copolymer, the modified stone powder, the degradable color master batch and the compound additive into a horizontal helical ribbon mixer, stirring and drying to obtain a mixture; the dried mixture is added into an injection molding machine to be melted and plasticized, a screw pushes melt to be injected into a mold, high-pressure nitrogen is injected into the melt, and the melt is pushed to completely fill a cavity; the plastic clothes hanger is obtained through pressure maintaining, cooling and demolding; the compound additive is prepared from allyl alcohol polyoxyethylene ether, 2-octenyl succinic anhydride, 14-mercaptotetradecanoic acid, anhydrous tetrahydrofuran, 2-hydroxy-4 '-(2-hydroxyethoxy)-2-methyl propiophenone and triethylamine. The preparation method comprises the following steps: preparing the compound additive; the degradable material is adopted, the biodegradation rate is high, the mechanical property is stable, the coloring effect is good, fading is not prone to occurring, and the service life is long.

The invention discloses a preparation method for plasticizing and forming a flexible thin bamboo veneer, and belongs to the technical field of processing and application of biomass materials. The method comprises the following steps: soaking a thin bamboo veneer in a polyethylene glycol solution, and drying to obtain a polyethylene glycol impregnated material; uniformly coating the surface of the polyethylene glycol impregnated material with a silane coupling agent, and drying to obtain a coupling agent modified thin bamboo veneer; and hot-pressing and compounding the modified thin bamboo veneer and a hot melt adhesive to obtain the thin bamboo veneer composite material. Through pretreatment of the thin bamboo veneer and process optimization of hot-pressing compounding of the thin bamboo veneer and the degradable material, the tensile elastic modulus reaches 6654.41 N / mm < 2 >, the transverse flexibility and the water resistance are remarkably improved, and the application field of the thin bamboo veneer is expanded.

The utility model relates to a plate production line. The plate production line comprises an extruder, a mold and a calender which are arranged in the machining direction, the extruder comprises a machine barrel and two screws, the two screws are meshed with each other and rotationally arranged in the machine barrel with the respective central axes as rotating shafts, the diameter of each screw is gradually reduced from the feeding end to the discharging end, and the diameter of each screw is larger than that of the machine barrel. And the included angle between the rotating shafts of the two screw rods is 10 minutes to 1 degree 20 minutes. The production line is improved according to the characteristics of PET materials, the plasticizing effect of the PET materials is improved, the quality of PET plates is guaranteed, the productivity of the production line is improved, and energy consumption is reduced.

The invention discloses a preparation method of a photovoltaic high-thermal-conductivity insulating PVB intermediate film, and relates to the technical field of photovoltaic module packaging materials.The preparation method comprises the steps that hydroxylation treatment and silane coupling agent surface grafting modification are carried out on hexagonal boron nitride, PVB resin and a plasticizer are premixed to obtain pre-plasticized PVB resin, and the pre-plasticized PVB resin is subjected to surface grafting modification through a silane coupling agent; the modified hexagonal boron nitride and the pre-plasticized PVB resin are subjected to melt blending granulation through a double-screw extruder, composite granules are subjected to extrusion casting film forming through a single-screw extruder, and the high-thermal-conductivity insulating PVB intermediate film is prepared. The heat conductivity coefficient of the PVB intermediate film prepared by the invention can reach 0.5-2.0 W / (m.K), the volume resistivity is 1014-1016 omega.cm, and the PVB intermediate film is applied to photovoltaic module packaging, so that the heat dissipation performance of a module can be effectively improved, and the power generation efficiency is improved.

The invention relates to the technical field of high polymer materials, in particular to ultra-high molecular weight polyethylene tarpaulin and a preparation method thereof.The preparation method comprises the following steps that S1, ultra-high molecular weight polyethylene resin is subjected to melt spinning, high-power hot stretching and twisting treatment; s2, weaving the fiber monofilaments into base cloth through a weaving process; s3, mixing the components according to a preset proportion to form a mixture A; s4, melting and plasticizing the mixture A, and curtain-coating the double surfaces of the base cloth with composite film layers through a curtain-coating die head; s5, a reinforced waterproof layer material is attached to the outer side of the composite film layer; and S6, finally, edge cutting and rolling treatment are conducted. The ultra-high molecular weight polyethylene fiber base material, the optimized composite film layer and the reinforced waterproof layer are adopted, and a multi-step precise process is combined, so that the tensile strength, the tear resistance, the weather resistance and the waterproof performance of the tarpaulin are remarkably improved, and the tarpaulin can adapt to various complex environments and high-strength use scenes.

The invention discloses an oyster shell reinforced polyvinyl chloride plate and a processing technology thereof, and relates to the technical field of polyvinyl chloride. The preparation method specifically comprises the following steps: S1, preparing polyvinyl chloride, oyster shell powder, a heat stabilizer, a plasticizer, a lubricant and an antioxidant as raw materials for later use; s2, calcining and modifying the oyster shell powder to obtain enhanced oyster shell powder; s3, sequentially putting the enhanced oyster shell powder and other raw materials into a high-speed mixer, uniformly mixing, plasticizing and extruding through a double-screw extruder, pulling into sheets, putting into a mold, calendaring into a plate, and cutting to obtain an oyster shell enhanced polyvinyl chloride plate; the oyster shell reinforced polyvinyl chloride plate prepared by the invention has excellent impact strength and flame retardant property, and has good moisture and heat retention rate, antibacterial property and lower density.