1242 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 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 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 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 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 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 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 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.

The invention relates to the technical field of polymer composite materials. The invention provides a high-impact high-modulus PP (polypropylene) composite material for automotive interiors. The high-impact high-modulus PP composite material comprises the following components in parts by weight: 25-40 parts of polypropylene A, 25-40 parts of polypropylene B, 10-18 parts of a toughening agent, 3-5 parts of a compatilizer and 5-10 parts of negative ion functional powder. The invention also provides a preparation method of the high-impact high-modulus PP composite material for the automotive trim. The preparation method comprises the following steps: S1, preparing the negative ion functional powder; s2, uniformly mixing the polypropylene A, the polypropylene B, the flexibilizer, the compatilizer, the talcum powder, the needle-like alkaline earth metal salt, the negative ion functional powder, the antioxidant, the lubricant, the light stabilizer and the color master batch at a high speed, adding the mixture into a double-screw extruder for melting, and then performing extrusion and granulation to obtain the high-impact high-modulus PP composite material for the automotive trim. According to the invention, the impact and modulus of the composite material are improved, and high-concentration sustainable release of negative ions is realized.

The invention relates to the technical field of antibacterial polyamide fiber preparation, and discloses a polyamide fiber with antibacterial performance and a preparation method thereof.The polyamide fiber is prepared from, by weight, 100 parts of PA6 slices, 10-15 parts of graphene oxide, 1-5 parts of surface amination mesoporous catechin-silver-loaded zirconium phosphate and related auxiliaries, after surface amination mesoporous catechin-silver-loaded zirconium phosphate and graphene oxide are subjected to amide linkage, the surface amination mesoporous catechin-silver-loaded zirconium phosphate and amide groups of polyamide fibers form a hydrogen bond network, the surface amination mesoporous catechin-silver-loaded zirconium phosphate and the amide groups of the polyamide fibers are mutually combined to play a synergistic effect, the interface binding energy is increased, and antibacterial components can stably exist in the polyamide fibers; meanwhile, the mesoporous structure provides multi-channel support, induces cracks to expand along the edge of a pore and increases the length of a fracture path, so that the stress transfer efficiency is obviously improved, and the problem of internal stress concentration caused by the addition of large-particle high-content rigid particles is avoided.

The invention discloses a preparation method of a nano silicon dioxide modified high-density polyethylene wear-resistant plate, and belongs to the technical field of polyethylene plates, the method comprises the following steps: firstly preparing an antioxidant PMMA microcapsule, then preparing titanium dioxide and silicon dioxide, and modifying by KH550 to obtain modified nano titanium-silicon composite particles; then, an antioxidant coated PMMA microcapsule, the modified nano titanium-silicon composite particles, POE-g-MAH and HDPE particles are premixed, and the wear-resistant plate is obtained through twin-screw extrusion granulation and pulsating force field assisted molding; through the synergistic effect of the antioxidant coated PMMA microcapsule, the modified nano titanium-silicon composite particles and the compatilizer POE-g-MAH, the problems that the wear resistance of the HDPE plate is insufficient and the antioxidant is easily adsorbed by nano silicon dioxide to cause aging resistance attenuation are solved, and the wear resistance, thermal oxidation / light aging resistance and mechanical property improvement of the plate are realized; and the requirements of high-frequency wear scenes such as mine conveying and outdoor engineering can be met.

The invention relates to the technical field of wire and cable materials, and discloses a high-temperature-resistant and aging-resistant wire and cable material and a preparation method thereof.The high-temperature-resistant and aging-resistant wire and cable material is prepared from, by weight, modified polyetherimide, silane modified polyolefin, organic montmorillonite, surface modified nanometer aluminum oxide and surface functionalized graphene, an antioxidant, a silane coupling agent and a processing lubricant; the preparation method of the high-temperature-resistant and aging-resistant wire and cable material comprises the following steps: weighing and preparing raw materials; carrying out surface modification treatment on the nanofiller; drying the raw materials; premixing the components; reacting, extruding and granulating; and cooling, bracing and dicing. By adopting the technical scheme of synergistic application of the surface functionalized graphene and the silane modified polyolefin, the technical effect of remarkably improving the thermal stability and the mechanical property of the composite material is achieved, the problem that the performance of a traditional scheme is unstable at high temperature is solved, and the phenomena of filler agglomeration and material degradation are avoided.

The invention relates to a bamboo-plastic composite material production method, which comprises: recovering a PE material, grinding the PE material to 30 mesh, taking 50-55 parts by weight of the ground PE material, 10-15 parts by weight of modified bamboo fiber and 4-7 parts by weight of an auxiliary agent, and uniformly mixing to obtain a material mixture; and extruding the mixed material by using a double-screw extruder, cutting and granulating, and controlling the length-diameter ratio of the extruder to be 40: 1. According to the bamboo-plastic composite material, the recycled PE material, the modified bamboo fibers and the auxiliaries are blended and matched, a bamboo-plastic composite material product is prepared through extrusion granulation, the bamboo fibers are modified and optimized through a specific process and then matched with the auxiliaries, and the auxiliaries are blended and reinforced through the silane coupling agent, the lubricant, the filler and the stabilizer. Boron nitride in the filler is matched into the modified liquid for stirring modification treatment, and the filler is optimized to be filled into the system, so that the performance effect of the system is further improved.

The invention relates to a heat-conducting insulating cable material and a preparation method thereof, and belongs to the technical field of cable materials, the heat-conducting insulating cable material comprises the following raw materials: 50-60 parts of polypropylene, 25-30 parts of SEBS, 12-18 parts of a modified heat-conducting insulating material, 2-4 parts of a plasticizer, 6-8 parts of an antioxidant, 3-4 parts of a lubricant and 7-10 parts of a reinforcing filler; according to the technical scheme, modified hydroxylated boron nitride is combined with organic intercalated montmorillonite, then a silane coupling agent is grafted, and a silanization reinforced material is obtained; combining the silanization reinforcing material with a branched functional monomer to obtain an amino-terminated hyperbranched composite material; combining the amino-terminated hyperbranched composite material with an interface modifier to obtain a modified heat-conducting insulating material; mixing polypropylene, SEBS, the modified heat-conducting insulating material, a plasticizer, an antioxidant, a lubricant and a reinforcing filler, and performing extrusion granulation to obtain the heat-conducting insulating cable material. The mechanical property, the heat-conducting property and the insulating property of the cable material are improved.

The invention relates to the technical field of high polymer materials, in particular to an impact-resistant flame-retardant polyamide cable tie and a preparation method thereof. The preparation method comprises the following steps: fully and uniformly mixing polyamide 6 and a flame retardant, and carrying out melt extrusion, pelletizing and melt spinning to obtain the flame-retardant fiber. The preparation method comprises the following steps: adding a magnesium-aluminum hydrotalcite material, gamma-aminopropyltriethoxysilane, 4-hydroxybenzaldehyde, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and cyanuric chloride to prepare a hydrotalcite flame-retardant material, and further adding the magnesium-aluminum hydrotalcite material, gamma-aminopropyltriethoxysilane, 4-hydroxybenzaldehyde, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and cyanuric chloride to prepare the hydrotalcite flame-retardant material. The preparation method comprises the following steps: pre-mixing polyamide resin, flame-retardant fibers and a hydrotalcite flame-retardant material, adding a flexibilizer, a plasticizer, an antioxidant and a heat stabilizer, and uniformly mixing to obtain a mixture; and sequentially carrying out extrusion granulation and injection molding on the mixed material to obtain a finished product. The finished product prepared by the invention has good flame retardant property and impact resistance, thereby having wide application prospects in the technical field of high polymer materials.

The invention discloses a warp-resistant mineral reinforced PC / PBT alloy material with dimensional stability and a preparation method thereof, and relates to the technical field of polymer composite materials. The preparation method comprises the following steps: weighing polycarbonate, polybutylene terephthalate, ureido pyrimidone-polydimethylsiloxane, epoxy polyhedral oligomeric silsesquioxane, polyimide coated halloysite nanotubes, magnesium-aluminum hydrotalcite, perfluoroalkyl modified boron nitride nanosheets, liquid crystal polymer microfibers, modified PVA (Polyvinyl Alcohol) fibers and a silane coupling agent KH550 according to a ratio; the preparation method comprises the following steps: pre-mixing polycarbodiimide and a composite antioxidant to obtain a mixture, mixing, adding into a double-screw extruder, extruding and granulating, drying, carrying out injection molding, and standing at constant temperature and constant humidity to obtain the composite material. The invention has the significance of providing the PBT / PC alloy material with dimensional stability, warping resistance, low shrinkage rate, low hygroscopicity, creep resistance, impact resistance, arc resistance and chemical corrosion resistance for consumer-grade and industrial-grade underwater plastic parts.

The invention belongs to the technical field of high polymer materials, and particularly relates to a PET decorative film and a preparation method thereof. The preparation method comprises the following steps: synthesizing hydroxyl-terminated hyperbranched polyester by taking pentaerythritol and 2, 2-dimethylolpropionic acid as raw materials, and reacting with polyol glycidyl ether to prepare an epoxy-terminated organic modifier; silver-loaded nano silicon dioxide subjected to surface treatment by an amino silane coupling agent is used as inorganic functional particles; pET resin, an organic modifier and inorganic functional particles are subjected to melt blending and extrusion granulation, and modified PET is prepared; the modified PET is prepared into the film through a two-way stretching process. Epoxy groups of the organic modifier chemically react with amino groups at the tail end of a PET molecular chain and on the surfaces of inorganic particles respectively, a stable organic-inorganic hybrid network is constructed, synergistic improvement of reinforcement, toughening and long-acting antibiosis is achieved, and the technical problems that functional particles are not uniform in dispersion, interface bonding is weak, and antibacterial components are prone to migration are effectively solved.

The invention discloses a polyethylene composite geomembrane and a processing technology thereof in the field of geosynthetic materials. The polyethylene composite geomembrane is prepared from the following raw materials: high-density polyethylene, polyethylene grafted maleic anhydride, a nano montmorillonite / low-density polyethylene composite modifier, an antioxidant, a light stabilizer and a lubricant calcium stearate. Wherein the polyethylene grafted maleic anhydride is prepared by drying high-density polyethylene, mixing the dried high-density polyethylene with maleic anhydride, an initiator and an antioxidant, and performing melt extrusion through a double-screw extruder, so that the surface polarity is improved; the nano-montmorillonite / low-density polyethylene composite modifier is prepared by ultrasonically dispersing Na-montmorillonite, adding hexadecyl trimethyl ammonium bromide, stirring, centrifugally drying to obtain organic modified montmorillonite, mixing the organic modified montmorillonite with low-density polyethylene, performing intercalation reaction, and performing twin-screw extrusion and blending, so that the barrier property is enhanced. The processing technology comprises the steps of raw material mixing, twin-screw extrusion granulation and calendaring molding, and finally the polyethylene composite geomembrane with remarkably improved interface cohesiveness, weather resistance and barrier property is prepared.