1732 results about "Extrusion Granulation" patented technology

Provided are a water-resistant wood-plastic reinforced composite flooring and a manufacturing method therefor. Wood flour is boiled in boiling water for 3-4 hours, filtered and dried, to obtain dried wood flour; polypropylene, butyl acrylate, methyl methacrylate, maleic anhydride and dicumyl peroxide are mixed evenly, extruded and granulated, and dried to obtain a compatibilizer; the dried wood flour and polypropylene are mixed evenly, the compatibilizer is added and mixed evenly, then extrusion and granulation, and injection molded, are performed, to obtain a wood-plastic flooring blank; a composite resin emulsion and a photoinitiator are ultrasonically mixed evenly, and the wood-plastic flooring blank is immersed therein, then taken out and dried at room temperature, and then vacuum dried and UV cured, to obtain water-resistant wood-plastic reinforced composite flooring.

The invention relates to the technical field of plastics, in particular to an antibacterial food packaging bag and a preparation method thereof.The antibacterial food packaging bag is prepared by blending polylactic acid and polypropylene carbonate as a base film raw material, selecting a food-grade ADR chain extender as a chain extender, selecting one of butyl titanate and a titanate coupling agent as a compatibilizer and selecting composite hybrid cellulose as a broad-spectrum antibacterial agent; carrying out extrusion granulation and blow molding to obtain a base film; the preparation method comprises the following steps: taking microcrystalline cellulose-nano zinc oxide hybrid particles as hybrid cellulose, performing epoxidation on the hybrid cellulose by using epoxy chloropropane, and then grafting an amino acid-based Schiff base antibacterial agent by using epoxy-hydroxyl reaction; composite hybrid cellulose and modified castor oil-based waterborne polyurethane are used for preparing a protective coating, the surface of a base membrane is coated with the protective coating, and a green, environment-friendly, durable, antibacterial, hydrophobic and antifouling self-repairing surface is constructed.

The invention discloses a degradable bamboo fiber express packaging bag and a preparation method thereof, and belongs to the technical field of express packaging. The packaging bag is prepared from, by mass, 32-42 parts of pretreated bamboo fibers, 22-28 parts of poly (butylene succinate), 9-14 parts of modified nano calcium carbonate, 12-16 parts of polycaprolactone, 6-11 parts of acetylated chitosan and the like, and the key raw materials are all treated through an exclusive pretreatment or modification process. The preparation method comprises the steps of raw material plasma activation, segmented high-speed mixing, vacuum drying, precise-parameter twin-screw extrusion granulation, secondary drying, precise film blowing, high-precision heat-sealing bag making and the like, and the technological parameters of all the steps are clear. The product disclosed by the invention can be efficiently degraded in a natural environment, has excellent tensile resistance, puncture resistance and impact resistance, is stable and controllable in processing process, and is adaptive to actual requirements of express packaging and industrial batch production.

The invention discloses a high-weather-resistance halogen-free flame-retardant polyamide composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material comprises the following raw materials in parts by weight: 20-60 parts of polyamide resin A, 0-20 parts of polyamide resin B, 10-50 parts of glass fibers, 0.1-2 parts of an ultraviolet absorbent, 0.1-2 parts of a free radical scavenger, 10-20 parts of a halogen-free flame retardant, 1-15 parts of a flame retardant synergist and 0.5-5 parts of a conventional auxiliary agent. The preparation method comprises the following steps: uniformly mixing the polyamide resin A, the polyamide resin B, the ultraviolet absorbent, the free radical scavenger, the flame-retardant synergist and the conventional auxiliary agent in a high-speed mixer according to the proportion to obtain a mixture, then adding the mixture into a double-screw extruder through main feeding, side feeding of the halogen-free flame retardant through a first side feeding and side feeding of the glass fiber through a second side feeding, and carrying out extrusion molding to obtain the flame-retardant polyamide composite material. And carrying out melt blending and extrusion granulation to obtain the high-weather-resistance halogen-free flame-retardant polyamide composite material. The obtained high-weather-resistance halogen-free flame-retardant glass fiber reinforced polyamide composite material is excellent in mechanical property, flame retardance and weather resistance.

The invention relates to the technical field of materials, and discloses an antibacterial composite pp material and a preparation process thereof.The antibacterial composite pp material is prepared from polypropylene as a main raw material and a compatilizer, a functional fiber modified additive, a rubber additive and the like as auxiliary materials through mixing and extrusion granulation processes. Wherein the functional fiber modified additive is medical stone fiber of which the surface is modified with a reactive macromolecular antibacterial agent, and the reactive macromolecular antibacterial agent can interact with a maleic anhydride group in a compatilizer structure in a subsequent melt extrusion process, so that the interface bonding performance between the medical stone fiber and polypropylene is greatly improved; further, the reinforcing effect of the medical stone fiber is fully exerted, so that the mechanical strength of the polypropylene material is effectively improved. In addition, triclosan in the structure of the macromolecular antibacterial agent has a broad-spectrum antibacterial effect, so that the polypropylene material can be endowed with excellent broad-spectrum antibacterial performance.

The invention relates to the technical field of degradable fibers, and discloses a degradable bamboo fiber composite material master batch and a preparation method thereof. The composite material is prepared from the following raw materials: modified bamboo fibers, modified polylactic acid, polyadipic acid / butylene terephthalate, a lubricant, an antioxidant and a plasticizer. The preparation method comprises the following steps: 1) performing alkali treatment and tannic acid-metal ion compound modification on the bamboo fibers to form a hydrophobic surface; 2) blending and modifying polylactic acid and bio-based elastomer polyhydroxybutyrate to construct a tough matrix; and 3) carrying out melt blending on the modified bamboo fiber, poly (adipic acid) / butylene terephthalate, the modified polylactic acid and an auxiliary agent, and then carrying out extrusion granulation. The degradable bamboo fiber composite material master batch prepared by the invention has good processability and mechanical properties, and can be widely applied to the fields of disposable tableware, packaging materials, agricultural plastic mulching films and the like.

The invention belongs to the technical field of flame-retardant fibers, and discloses a colored flame-retardant master batch and a preparation method of colored flame-retardant fibers.The preparation method of the colored flame-retardant master batch comprises the steps that a flame retardant PDI-MA and a polyester chip powder matrix are blended, extruded and granulated, and the colored flame-retardant master batch is prepared; the preparation method of the colored flame-retardant fiber comprises the following steps: blending the prepared colored flame-retardant master batch and polyester chips, and carrying out melt spinning to obtain the colored flame-retardant polyester fiber. The pigment and the flame retardant in the flame retardant PDI-MA prepared by the invention are carriers for each other, and the advantages of MA and PTCDA are combined, so that the colored flame-retardant polyester fiber prepared from the flame retardant PDI-MA has colored and flame-retardant properties, and the overall flame retardance is improved synergistically.

The invention relates to a full-biodegradable polyester composite material and a heat shrink film thereof. Corn starch, PBAT and PLA are used as main raw materials, glycerin, water and polyethylene glycol-6000 are used as composite plasticizers, B225 is used as an antioxidant, and solid paraffin and oleamide are used as lubricants. The preparation method comprises the following steps: adding corn starch, glycerol, water, PEG-6000, B225, solid paraffin and oleamide into a high-speed mixer, stirring to obtain plasticized corn starch, adding PBAT and PLA into the high-speed mixer, mixing with the plasticized corn starch, stirring, discharging, putting into an extruder, extruding and granulating to obtain a full-biodegradable polyester composite material, and extruding and blowing to obtain the thermal shrinkage film. The polyester composite material prepared by the invention can be biodegraded under the condition of matured compost, the biodegradation rate is 91.22%, the relative biodegradation rate is 96.55%, and products are carbon dioxide and water and meet the GB / T 41010-2021 standard requirements.

The invention discloses a method for preparing a high-density and low-carbon-oxygen titanium alloy. The method comprises the following steps: weighing a certain mass of spherical TC4 powder and a binder; the spherical TC4 powder and a binder are put into an internal mixer to be mixed; putting the mixed feed into a granulator, and extruding and granulating to obtain granular injection feed; putting the granular injection feed into an injection stock bin, and injecting into a mold to obtain a TC4 green body; the TC4 green body is subjected to degreasing treatment; and the TC4 degreased blank is sintered, the first stage is a thermal degreasing stage, the TC4 degreased blank is cooled to the room temperature along with a furnace, then the second stage is sintered, the TC4 degreased blank is cooled to the room temperature along with the furnace, and a TC4 sintered part is obtained. According to the method for preparing the high-density and low-carbon-oxygen titanium alloy, an optimized two-section type sintering process is adopted for the blank, a binder can be fully volatilized and discharged at the low temperature, the content of C and O in a titanium alloy sintered part is reduced, and the method has the advantages that atomic diffusion and rearrangement of the titanium alloy blank are more orderly, the density is effectively improved, and the service life of the titanium alloy blank is prolonged. And the cracking and deformation risks are reduced.

The invention belongs to the technical field of flame-retardant polyester fibers, and discloses a flame-retardant anti-dripping colored polyester fiber preparation method, which comprises: blending a flame retardant PDI-MAC and a polyester chip powder matrix, and carrying out extrusion granulation to obtain a PET colored flame-retardant anti-dripping master batch; and blending the PET colored flame-retardant anti-dripping master batch with polyester chips, and carrying out melt spinning to obtain the flame-retardant anti-dripping colored polyester fiber. According to the invention, the MAC and the PDI are combined, so that the prepared flame retardant PDI-MAC has flame-retardant and anti-dripping effects and also has a color developing effect, the production procedures are reduced, the cost is reduced, and the problems caused by multi-step addition in the prior art are avoided.

The invention provides a degradable biological membrane and a preparation method thereof. The degradable biological membrane is prepared from the following raw materials in parts by weight: 60-70 parts of PBAT, 30-40 parts of PLA, 5-10 parts of microcrystalline cellulose composite modified particles, 0.5-2 parts of a chain extender, 1-2 parts of a coupling agent, 0.5-1 part of an anti-hydrolysis agent and 0.5-1 part of an antioxidant. The degradable biological membrane is obtained through the working procedures of mixing, extrusion granulation, curtain coating cooling, two-way stretching and the like. Wherein the microcrystalline cellulose is modified through the procedures of carboxylation, cross-linking, monohydroxyl end-capping grafting and the like at a specific degree to prepare composite modified particles, so that the degradable biological membrane has good mechanical properties and waterproof and breathable functions.

The invention discloses a biodegradable polylactic acid composite material and a preparation method thereof, and relates to the technical field of polylactic acid materials. The method comprises the steps that firstly, chitosan activated through hydrochloric acid is subjected to graft modification through a KH550 silane coupling agent, meanwhile, nano-zinc oxide is subjected to surface modification through stearic acid, the chitosan and the nano-zinc oxide are mixed, spray drying is conducted, and antibacterial composite powder is prepared; the preparation method comprises the following steps: performing hydrochloric acid activation and KH570 silane coupling agent modification on nano silicon dioxide, performing hydroxypropylation modification on alkali lignin, and performing reflux crosslinking reaction on the modified alkali lignin, KH570 modified nano silicon dioxide, polycaprolactone, methyl methacrylate and azodiisobutyronitrile to prepare a heat-resistant reinforcer; uniformly mixing polylactic acid, poly (butylene succinate), the antibacterial composite powder, the heat-resistant reinforcer, tributyl citrate, polyethylene glycol and talcum powder, and extruding and granulating by using a twin-screw extruder to obtain the heat-resistant antibacterial material. The composite material prepared by the invention has excellent antibacterial property, heat resistance and biodegradability.

The invention relates to a herbal deodorizing master batch, a fiber, a fabric and a preparation method thereof. The master batch comprises the following components in parts by mass: 60-75 parts of polyester PET, 0.5-1 part of an antioxidant, 0.5-1 part of a dispersant and 25-40 parts of a herbal deodorizing extract, the herbal deodorizing extract comprises one or more of scandent hop extract, mottled bamboo extract, lichen extract and amblystegium giganteum extract; the antioxidant is tea polyphenol, and the dispersing agent is talcum powder. The master batch is prepared by melt blending extrusion granulation, and the fiber is prepared by melt spinning of the master batch and polyester. The deodorization component in the master batch prepared by the invention can still keep activity after being subjected to polymer melting high-temperature treatment, and can enter the fabric in a melt spinning manner, so that the fabric has deodorization property.

The invention relates to the technical field of polyester fiber granulation, in particular to polyester fiber master batch processing, extruding and granulating equipment which comprises a cooling water pond, a workbench is arranged on the right side of the cooling water pond, a partition plate is installed between the front inner wall and the rear inner wall of the middle of the cooling water pond, water cooling units are arranged on the left side and the right side of the partition plate, and an air cooling unit is arranged at the upper end of the workbench. Extrusion equipment and cutting equipment are respectively arranged on the left side of the cooling water tank and the right side of the workbench. According to the water cooling unit, the cooling water pool can be divided into two areas through the partition plate, polyester fiber strips are cooled in the areas, and it is preliminarily guaranteed that the polyester fiber strips are rapidly and effectively cooled; and meanwhile, cooling water near the polyester fiber strips and cooling water in other areas can be rapidly and uniformly stirred by the conveying assembly in the polyester fiber strip conveying process, the activity of the cooling water is increased, the temperature of the cooling water around the plastic strips is effectively reduced, and then the cooling effect and the cooling speed of the polyester fiber strips are improved.

The invention relates to a production system and a production method of a polyhydroxyalkanoate paper-plastic composite material. The production system comprises an unwinding mechanism, a coating device, a drying device, a pressing device, a winding mechanism and a post-processing device, wherein the unwinding mechanism is used for conveying base material paper; the coating device is used for coating the base material paper conveyed out by the unwinding mechanism and comprises an extrusion type coating machine head; the drying device is used for heating and drying the coated base material paper; the pressing device is used for pressing the dried base material paper; the winding mechanism is used for storing the laminated base material paper; and the post-processing device is used for performing post-processing on the laminated base material paper, and the post-processing device comprises an elastic roll mechanism and a drying box. According to the preparation method, an extrusion type coating process is adopted, extrusion granulation, high-temperature melt extrusion casting or film spraying forming of the polyhydroxyalkanoate is not needed, the degradation risk of the polyhydroxyalkanoate is avoided, degradation of the polyhydroxyalkanoate is reduced, and the production cost is reduced.

The invention relates to the technical field of protective films, and particularly discloses a composite glass protective paste for a flexible folding screen and a preparation method of the composite glass protective paste. The composite glass protection paste for the flexible folding screen sequentially comprises a functional base film, a first thermosetting polymer film, a UTG ultrathin glass layer, a second thermosetting polymer film and an OCA adhesive layer from top to bottom, the preparation method of the OCA adhesive layer comprises the following steps: carrying out activating treatment on nano silicon dioxide particles to obtain modified particles with cations on the surfaces; carrying out reaction on the modified particles and molten hydroxy acrylic resin under the ultrasonic action, and carrying out extrusion granulation to obtain elastic acrylic master batches; uniformly mixing the elastic acrylic master batch with a cross-linking agent and a photoinitiator to obtain the acrylic OCA; and coating OCA on one surface of the release film, and performing ultraviolet curing to obtain an OCA layer. According to the composite glass protection paste for the flexible folding screen, the bending resistance of the protection paste is improved.

The invention relates to the field of thermoplastic elastomers, and particularly discloses a low-hardness high-temperature-resistant thermoplastic elastomer and a preparation method thereof. The low-hardness high-temperature-resistant thermoplastic elastomer is prepared from the following raw materials in parts by weight: 90 to 100 parts of modified styrene-ethylene-butylene-styrene block copolymer, 50 to 250 parts of white oil, 10 to 100 parts of polypropylene and 5 to 10 parts of antioxidant, and hydrogen bonds formed by ureido groups are introduced into the modified styrene-ethylene-butylene-styrene block copolymer; the preparation method comprises the following steps: uniformly mixing the styrene-ethylene-butylene-styrene block copolymer and the white oil at a high speed to prepare oil-filled SBES for later use; and pre-mixing the prepared oil-filled SBES, an antioxidant and polypropylene, and carrying out melt blending and extrusion granulation at 200-220 DEG C. The preparation method comprises the following steps: pre-mixing the oil-filled SBES, the antioxidant and the polypropylene; the composition can be used for product sealing, and has the advantages of high temperature resistance and low hardness.

The preparation method comprises the following steps: mixing a polyurethane prepolymer and a modified filler, adding the mixture into a twin-screw extruder, carrying out extrusion granulation to prepare the antistatic master batch, and carrying out melt extrusion on the polyurethane prepolymer and the modified filler in the melt extrusion process of the polyurethane prepolymer and the modified filler to prepare the antistatic master batch. When the polyurethane prepolymer reacts with hydroxyl on the surface of the modified filler, the modified filler can be uniformly dispersed among polyurethane molecular chain segments, the surface of the modified filler contains polyaniline chain segments and quaternary ammonium salt structures, a large number of conjugated pi electrons are contained on the main chain of polyaniline molecules, and the conjugated pi electrons can be dispersed among the polyurethane molecular chain segments. Pi electrons can freely move in a conjugated system to generate a delocalization effect, so that polyaniline has conductivity, a conductive path is further formed in the material, quaternary ammonium salt can neutralize charges carried by the polyurethane material, an antistatic effect is further achieved, and due to the addition of a polysiloxane chain segment, the antistatic property of the polyurethane material is improved. And the antistatic effect of the material is not reduced in a high-temperature environment.

The invention discloses a biomass-based fiber modified composite material and a preparation method thereof, and belongs to the technical field of composite materials, the biomass-based fiber modified composite material comprises the following raw materials by weight: 100 parts of polyolefin resin and 20-50 parts of modified fiber, the modified fibers are obtained by treating wood fibers, wherein the wood fibers are pretreated by dopamine to obtain dopamine pretreated fibers, and then nano silicon dioxide is deposited on the surfaces of the dopamine pretreated fibers to obtain the modified fibers. The preparation method of the composite material comprises the following steps: mixing the raw materials to obtain a primary mixture, carrying out melt blending extrusion granulation on the primary mixture in a double-screw extruder, and finally carrying out injection molding on the obtained granules to obtain the biomass-based fiber modified composite material. Through the synergistic effect of dopamine treatment and silicon dioxide deposition, the interface bonding performance between the fiber and a polyolefin matrix can be remarkably enhanced, stress transfer is more efficient, and therefore the mechanical property of the composite material is improved optimally.

The invention discloses a high-impact material prepared from recycled polypropylene and a preparation method of the high-impact material, and relates to the field of materials. When recycled polypropylene is used for preparing the high-impact material, firstly, polypropylene is grafted with vinyl diphenylphosphine, then the grafted polypropylene is reacted with 1-(3-chlorphenyl)-2-propyn-1-ol, and then the reacted polypropylene is reacted with 6-(methyl formate) pyridine-3-boric acid to obtain modified polypropylene; secondly, the calcium carbonate pretreated by 3-aminopropyltrimethoxysilane reacts with 3-thiophenecarboxaldehyde, thiophene, 6-(thiophene-2-yl) pyridine-2-carboxylic acid and 6-(3-thienyl) pyridine-2-formaldehyde are polymerized on the surface of the calcium carbonate, and modified calcium carbonate is obtained; and finally, carrying out melt blending on recycled polypropylene, modified polypropylene, modified calcium carbonate, sodium cyanide and bismaleimide, and carrying out extrusion granulation to obtain the high-impact material. The high-impact material prepared by the invention has good impact resistance, aging resistance and antibacterial property.

The invention discloses hydrophilic modified polysulfone resin with side carboxyl groups and a preparation method of the hydrophilic modified polysulfone resin, and relates to the technical field of polysulfone. According to the invention, desalted water is used as a salt-forming solvent to carry out a salt-forming reaction of the bisphenol monomer, after the salt-forming reaction is finished, the salt-forming agent of the system is reacted and alkalinity is weakened, and then an NMP solvent is added to carry out water sampling, so that interference of NMP decomposition on carboxyl in a salt-forming stage is reduced, and the proportion of diphenolic acid connected with a molecular chain is consistent with a feeding ratio; the formed hydrophilic modified polysulfone resin is more stable in component; meanwhile, before end capping, side chain carboxyl forms a stable coordination complex, so that the end capping can be performed on the diphenolic acid type hydrophilic polysulfone, the content of phenol end groups with poor thermal stability is greatly reduced, and the natural color can be kept during extrusion granulation.

The invention relates to the technical field of plastics, in particular to a high-strength antibacterial plastic packaging bottle and a preparation method thereof.The preparation method comprises the steps that polylactic acid, poly (butylene succinate), epoxidized soybean oil and composite zinc oxide are mixed, extruded, granulated and blow-molded, and a base part is obtained; mesoporous nano-zinc oxide is used as a carrier to carry tea polyphenol, then carboxymethyl chitosan is used for coating, and an epoxy compound containing a Si-O chain segment is grafted; preparing a protective coating from composite zinc oxide and soybean oil-based self-repairing waterborne polyurethane, and coating the surface of a substrate with the protective coating; soybean oil-based polyol, polytetrahydrofuran ether glycol and isophorone diisocyanate are used as raw materials to prepare a polyurethane prepolymer, 2, 2-bis (hydroxymethyl) propionic acid is used as a hydrophilic chain extender, an epoxy compound containing a Si-O chain segment is used as a modifier, 1, 4-butanediol and dithiodiethanol are used as end-capping reagents, triethylamine is used as a neutralizer, and the polyurethane prepolymer is prepared by a one-step method. And ethylene diamine and tetraethylenepentamine are used as amine cross-linking agents to prepare the soybean oil-based self-repairing waterborne polyurethane.

The invention belongs to the technical field of ultra-high molecular weight polyethylene, and particularly relates to a high-temperature-resistant ultra-high molecular weight polyethylene fiber and a preparation method thereof.The preparation method comprises the following steps that an aluminate coupling agent, a processing aid and halloysite nanotubes are mixed and put into a double-screw extruder to be subjected to extrusion granulation, and a binary blended composite material is obtained; mixing the binary blended composite material with polycarbonate particles, then adding a processing aid, a dispersing agent, graphene and ultra-high molecular weight polyethylene, uniformly mixing, putting into a twin-screw extruder, extruding, and cooling to obtain the high-temperature-resistant ultra-high molecular weight polyethylene fiber, the thermal deformation temperature of the high-temperature-resistant ultra-high molecular weight polyethylene fiber reaches 131 DEG C, the high-temperature-resistant ultra-high molecular weight polyethylene fiber shows good high temperature resistance, the thermal decomposition finishing temperature is 540.8 DEG C, good thermal stability is shown, and the application field of the ultra-high molecular weight polyethylene fiber is expanded.

The invention relates to the technical field of cable materials, in particular to a low-smoke halogen-free flame-retardant polyolefin cable material and a preparation process thereof. The low-smoke halogen-free flame-retardant polyolefin cable material is obtained by uniformly mixing the ethylene-vinyl acetate copolymer, the polyethylene, the compatilizer, the halogen-free flame retardant, the fuming inhibitor, the carbon black, the lubricant and the antioxidant and carrying out extrusion granulation. The low-smoke halogen-free flame-retardant polyolefin cable material comprises the following components in parts by weight: 60-80 parts of an ethylene-vinyl acetate copolymer, 20-40 parts of polyethylene, 10-20 parts of a compatilizer, 50-60 parts of a halogen-free flame retardant, 15-30 parts of a fuming inhibitor, 5-10 parts of carbon black, 1-3 parts of a lubricant and 1-2 parts of an antioxidant. The low-smoke halogen-free flame-retardant polyolefin cable material prepared by the invention has excellent mechanical properties, flame retardance and aging resistance.

The invention discloses a polyamide composition and a preparation method thereof, and belongs to the field of high polymer materials. The method comprises the following steps: uniformly mixing the polyamide resin, the flexibilizer, the coupling agent, the antioxidant and the lubricant, and adding the mixture into a double-screw extruder from a main feeding hopper; adding the hollow glass beads into a double-screw extruder from a side feeding hopper close to a main feeder, and adding glass fibers into the double-screw extruder from a side feeding hopper close to a machine head; the polyamide composition is prepared through melt blending, extrusion granulation, homogenization and drying; by adjusting the blanking sequence of the hollow glass beads and the conventional glass fibers, controlling the rotating speed of a screw rod and the feeding of an extruder, firstly combining the hollow glass beads with matrix resin containing a compatilizer and then adding the glass fibers, the shearing force borne by the hollow glass beads in the resin is reduced, and the glass fibers are uniformly dispersed in the matrix resin. The retention rate of the hollow glass beads in the polyamide is improved, so that the purpose of remarkably reducing the density of the material is achieved.

The invention discloses a cable capable of rapidly conducting heat and retarding flame and a preparation method thereof, and belongs to the technical field of cables. The preparation method comprises the following steps: mixing and stirring 60-70 parts of high-density polyethylene, 20-30 parts of polypropylene, 15-25 parts of a heat-conducting filler, 10-15 parts of an ethylene-vinyl acetate copolymer, 8-15 parts of a flame retardant, 6-10 parts of a polyolefin elastomer, 5-8 parts of glass fibers, 3-5 parts of a compatilizer, 1-3 parts of a coupling agent, 0.5-1.2 parts of an antioxidant, 0.5-1.2 parts of an ultraviolet light absorber and 0.05-0.1 part of a cross-linking agent; and performing melt extrusion on the cable material, coating the periphery of a copper wire with the cable material, and cooling the cable material to obtain the cable. A spatial network structure is formed among the flame retardant containing flame-retardant elements of nitrogen, phosphorus and silicon, the heat-conducting filler, the glass fiber and the matrix resin, so that the raw materials such as the flame retardant and the like can fully play roles, and the cable has excellent and stable flame-retardant effect, heat-conducting property and mechanical property.

The invention relates to the technical field of environment-friendly materials, and discloses a high-strength degradable packaging material and application of the high-strength degradable packaging material in cosmetic packaging materials.The preparation method of the high-strength degradable packaging material comprises the steps that polylactic acid, vanillic aldehyde modified polyester, polyadipic acid, triethyl citrate, calcium stearate and an antioxidant are added into a high-speed mixing machine, and the mixture is stirred to be uniform; mixing at 60 to 80 DEG C for 10 to 20 minutes to obtain a mixed material; the mixed material is subjected to melt blending through a double-screw extruder, the blending temperature is 160-180 DEG C, the screw rotating speed is 250-300 rpm, extrusion granulation and drying are conducted, and the high-strength degradable packaging material is obtained. The high-strength degradable packaging material can be applied to cosmetic packaging materials such as bottle bodies, bottle caps, hoses and packaging boxes. The prepared packaging material is high in mechanical strength and has good degradability and flame retardance.

The invention relates to the technical field of nylon, and discloses flame-retardant fireproof high-temperature-resistant nylon and a preparation method thereof. According to the invention, nylon 6, a montmorillonite-copper complex flame retardant and the like are extruded and granulated in a twin-screw extruder to obtain the flame-retardant fireproof high-temperature-resistant nylon. After surface organic modification, montmorillonite has good compatibility with nylon 6, the tensile strength of the material is increased, the flame retardant contains phosphate groups and more nitrogen-containing ureido and phenanthroline structures to form a nitrogen-phosphorus flame retardant, and meanwhile, the flame retardant contains a salicylic acid-phenanthroline-copper complex structure to catalyze charring of a nylon matrix at high temperature, so that the flame retardant has excellent flame retardancy. The flame retardance of the nylon material is remarkably improved, the UL94 grade reaches the V0 grade, the limit oxygen index is increased, the residual carbon amount at high temperature is increased, and the high-temperature resistance of the material is improved.

The invention relates to the technical field of polymer composite materials, and discloses a refining treatment method of a bamboo fiber ultra-nano micro powder and natural polymer blended material, which comprises the following steps: (a) premixing bamboo fiber ultra-nano micro powder and a deep eutectic solvent to obtain a premix and realize in-situ activation; (b) adding the premix and a natural polymer matrix from a main feed port of a double-screw extruder; and (c) in the melt blending process, adding a dynamic interface locking agent through a side feeding port arranged at the downstream of the main feeding port, and then extruding and granulating. A staged dynamic compatibilization process is adopted, a hydrogen bond network of bamboo fibers is destroyed by using a deep eutectic solvent to promote shearing dispersion of the bamboo fibers in the front section, and stable interface bonding is constructed in the rear section through a dynamic interface locking agent after dispersion is completed. The method synergistically solves the conflict between dispersion and interfacial compatibilization, so that the composite material has good comprehensive performance.

The invention provides a method for preparing a high-performance PVA / PBAT (polyvinyl alcohol / poly (butyleneadipate-co-terephthalate)) composite film by blow molding, which comprises the following steps: carrying out swelling plastification modification on polyvinyl alcohol by using an environment-friendly plasticizer to obtain modified polyvinyl alcohol; the preparation method comprises the following steps: modifying polyvinyl alcohol, blending the modified polyvinyl alcohol with a certain proportion of PBAT, carrying out screw extrusion granulation to prepare composite granules, and carrying out extrusion blow molding film formation to prepare the PVA / PBAT composite film. According to the method disclosed by the invention, the specific environment-friendly plasticizer is selected, so that the PBAT is well dispersed in a PVA matrix, the phase domain size of a dispersed phase is less than 1 mu m in a breakthrough manner, and the PVA / PBAT composite film with good mechanical properties is successfully prepared for the first time. The prepared PVA / PBAT composite film has good water resistance and blocking resistance, the application scene of the PVA film in the packaging field can be widened, and the PVA / PBAT composite film has good commercial application prospects.