142 results about "Polyester composite" patented technology

The invention relates to the technical field of fabric fabrics, in particular to preparation of a stain-resistant and waterproof polyester composite fabric. The invention discloses a stain-resistant waterproof polyester composite fabric and a preparation method thereof, the composite fabric is composed of three layers from outside to inside, the first layer is a polyester filament yarn surface layer subjected to fluorinated graphene and plant source C18 alkylsilane amphiphobic finishing; the second layer is a copolyamide hot melt adhesive net film with a melting point of 105 DEG C; and the third layer is a degradable multifunctional thermoplastic polyurethane elastomer film loaded with silver zeolite antibacterial microcapsules and conductive carbon nanotubes. An amphiphobic finishing liquid is uniformly deposited on the surface of polyester by adopting a supercritical CO2 one-step method, and nanoparticles and fibers are covalently bonded through a chitosan-citric acid cross-linked network, so that the waterproof grade is still greater than or equal to 90 after 30 times of water washing, the oil repellent grade is greater than or equal to 5, and the water contact angle and the oil contact angle are reduced by lt; the temperature is 5.5 DEG C, and the moisture permeability retention rate is gt; the antibacterial rate is 97%, and the antibacterial rate is gt; the compost degradation rate within 180 days is gt; 90%.

The invention relates to the technical field of bio-based degradable high polymer materials, in particular to a bio-based degradable pearl wool microcellular foaming material. The composite material is prepared from the following components in parts by mass: 70-85 parts of a bio-based polyester resin composite system of polylactic acid and poly (terephthalic acid)-butylene adipate (in a mass ratio of 60: 40-75: 25), 10-20 parts of bagasse microfibers modified by a silane coupling agent, 1.5-4 parts of a composite nucleating agent of flaky talcum powder and spherical nano calcium carbonate (in a mass ratio of 1.5: 1-2.5: 1), the bio-based plasticizer is prepared by compounding epoxidized soybean oil and tributyl citrate, the montmorillonite degradation accelerant is loaded with iron and cobalt ions (the molar ratio is 3: 1-5: 1), and the mixed foaming agent is prepared from 5-12 parts of supercritical carbon dioxide and nitrogen (the volume ratio is 60%-85%). A bio-based polyester composite system of polylactic acid and PBAT is adopted, silane modified bagasse microfibers are matched, montmorillonite loaded with iron and cobalt ions serves as a degradation accelerant, a bio-based plasticizer and the like are combined, and the composite material is prepared through a twin-screw extrusion melt blending and supercritical fluid foaming technology.

The polyester based polymer composition includes a polyester, a metal oxide, and a metal hydroxide. The polymer composites contains the metal oxide and a metal hydroxide made from melting blending has good mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The reinforced polymer composites with glass fibers, and the metal oxide and metal hydroxide made from melting blending has higher mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The polymer composites made from melting blending have the required mechanical properties and the degradability so that the polymer composites can be used for degradable or dissolvable component of a downhole tool.

The invention discloses a preparation method of an ultrathin and super-hydrophilic polyamide-polyester composite nanofiltration membrane. According to the method, on the basis of a nano-scale sodium-based cyclodextrin metal-organic framework (U-Na-beta-CD-MOF) synthesized by a green ultrasonic strategy, accurate regulation and control on the structure and performance of a polyamide active layer are realized by regulating and controlling the diffusion behavior of a piperazine (PIP) monomer in an interfacial polymerization process. The preparation method comprises the following steps: S1, contacting a pretreated polyester porous support membrane with a water-phase solution, standing, enabling the water-phase solution to fully infiltrate the surface of the support membrane, and then removing redundant water-phase solution; s2, contacting the support membrane from which the water phase solution is removed in the step S1 with an organic phase solution under a low-temperature condition, standing, carrying out interfacial polymerization reaction, and removing the organic phase solution to form a polyamide active layer; and S3, cleaning the composite membrane obtained in the step S2, and carrying out curing or quenching treatment to obtain the ultrathin and super-hydrophilic polyamide-polyester composite nanofiltration membrane with the nano wrinkle structure. The water phase solution is a mixed solution of piperazine, sodium carbonate and a nanoscale sodium-based beta-cyclodextrin metal-organic framework; the invention provides an efficient, simple and controllable nanofiltration membrane preparation strategy, is suitable for efficient separation of pollutants and ions, and has a good application prospect.

The invention discloses a composite degradation accelerant, a controllable degradation polyester composite material and a preparation method of the controllable degradation polyester composite material. According to the invention, the halloysite-loaded degradation accelerant is used for coating the degradation bacterium spores to form a core-shell structure, so that the composite degradation accelerant is obtained, the thermal stability of the degradation bacterium spores is improved, and the degradation bacterium spores can be subjected to thermal processing with biodegradable polyester; through the synergistic effect of the composite degradation accelerant and the degrading bacteria, the biodegradation rate of the biodegradable material is regulated and controlled; the composite degradation accelerant and biodegradable polyester are blended and compounded, and the degradation rate is regulated and controlled through the design of the load rate and the raw material ratio, so that the problem of poor controllability of the degradation rate of the existing biodegradable material is solved; the production process is simple, and the existing biodegradable polyester modification production line is adopted, so that large-scale industrial production can be realized.

The invention relates to the technical field of polyester degradation, in particular to a selective depolymerization method of polyester in a polyester composite material. The selective depolymerization method comprises the following steps: carrying out a depolymerization reaction on a polyester composite material, a cosolvent, a depolymerization agent and a basic catalyst at normal pressure and a temperature not higher than 65 DEG C, the cosolvent is at least one of an ethylene glycol diether compound, a propylene glycol diether compound and an isobutyl ketone compound. According to the selective depolymerization method, an ethylene glycol diether compound, a propylene glycol diether compound and an isobutyl ketone compound are used as cosolvents, a depolymerization agent is used as a methylation reagent, and directional polyester depolymerization of a polyester composite material can be realized at normal pressure and the temperature not higher than 65 DEG C; when the polyester material is degraded, the non-polyester material is basically not degraded or depolymerized, and the selective depolymerization and separation of the polyester composite material such as a polyester blended fabric can be realized.

The invention relates to polylactic acid carbon dots as well as a PLA / PVA (polylactic acid / polyvinyl alcohol)-based full-biodegradable polyester composite material and a preservative film thereof. The polylactic acid carbon dots are prepared by a microwave irradiation method, and the full-biodegradable polyester composite material takes PLA as a main base material, PVA as auxiliary resin, food-grade talcum powder as a filler, the polylactic acid carbon dots as a compatilizer, glycerol and stearic acid as lubricants and B215 as an antioxidant. Performing high-speed mixing and stirring to obtain a modified mixture, extruding and pelletizing the modified mixture to obtain a full-biodegradable polyester composite material, and performing film blowing on the polyester composite material to obtain the full-biodegradable preservative film. The polyester composite material prepared by the invention can be biodegraded under a matured compost condition (the test period is 140 days), the biodegradation rate is 91.79%, the relative biodegradation rate is 97.15%, the products are carbon dioxide and water, and inspection items such as the total migration amount and heavy metals meet standard requirements.

The invention discloses preparation and application of a polyester composite material based on cassia anthraquinone, and belongs to the field of polymer synthesis and polymer composite materials. The synthesized high-molecular-weight polyester is mixed with an antioxidant 300 and a reinforcing agent carboxylated cellulose nanowhiskers for banburying processing to obtain a polyester-based composite material with good oxidation resistance and mechanical properties, and the polyester-based composite material is used for preparing edible oil cans, edible oil tanks and wine storage materials; polyester and white carbon black are mixed and processed to obtain a composite material with good mechanical property, flexibility and oil resistance, and the composite material is used for manufacturing storage and transportation materials containing gasoline, diesel oil, kerosene, lubricating oil and the like.

The present application relates to the technical field of corn fertilization, and provides a corn whole growth period precise fertilization method, which comprises the following steps: S1, applying base fertilizer containing nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, brown algal polysaccharide, calcium ammonium nitrate, zinc citrate, potassium humate and gamma-polyglutamic acid between corn rows when corn is sowed; S2, spraying leaf fertilizer containing potassium dihydrogen phosphate, magnesium sulfate, alginic acid and polyaspartic acid during the corn filling stage; the base fertilizer is slow-release fertilizer, and after granulation, the base fertilizer is coated with a polyester composite layer and a wax layer in sequence. According to the present application, the base fertilizer is made into double-layer coated slow-release particles and applied with sowing, the outer layer of furfural / wax forms a hydrophobic barrier to inhibit the burst release and salt damage during the seedling stage, and the inner layer of polyester composite layer forms controllable water channels and slowly hydrolyzes with time, so that nutrients are supplied in stages in a platform mode during the corn growth period, and precise fertilization and efficient utilization are achieved during the whole growth period.

The invention discloses a carbon fiber polyester composite felt and a preparation method thereof, and relates to the technical field of high polymer materials, and the preparation method comprises the following steps: (1) carbon fiber directional activation; (2) in-situ grafting of sheath-core monofilaments; (3) dual-network synchronous lapping; and (4) node in-situ thermal consolidation. According to the preparation method disclosed by the invention, a carbon fiber polyester composite felt preparation system without an additional binder is constructed by sequentially implementing four steps of processes of carbon fiber directional activation, skin-core monofilament in-situ grafting, dual-network synchronous lapping and node in-situ thermal consolidation, and molecular-level synergistic combination of carbon fibers and polyester components is realized. The interface bonding strength and structural integrity of the composite felt can be remarkably improved, and meanwhile, the mechanical bearing stability of the composite felt is improved, so that the problems that in the prior art, carbon fibers and a polyester matrix are poor in interface compatibility, layering and falling are prone to occurring, and the service life is short can be solved. And the problems that the mechanical property of the composite felt is reduced, the preparation process is complicated and the environmental protection property is insufficient due to the need of adding an external binder are solved.

This application relates to the field of electrochemical technology, specifically to polyester composite films and their preparation methods, composite current collectors and their preparation methods, electrodes and their applications. The polyester composite film of this application comprises: a polyester substrate layer and a first surface layer and a second surface layer respectively disposed on opposite sides of the polyester substrate layer; the polyester substrate layer comprises, by weight, 90 to 99 parts of polyester material and 1 to 10 parts of photo-straining material; the first and second surface layers comprise polyethylene terephthalate polymers; the transmittance of the first surface layer, the second surface layer, and the polyester material is independently 92% to 99%; the photo-straining material comprises one or more of barium titanate ceramics, lead zirconate titanate ceramics, PI / CNTs photosensitive composite materials, PEEK / anthraquinone photosensitive composite materials, MIL-101 chromium metal-organic frameworks, and UiO-66-NH2 / ZnO composite materials. The polyester composite film can easily break under high-destructive external forces such as battery breakdown and battery collision, effectively suppressing thermal runaway.

The application provides a polyester composite material and a preparation method and application thereof, the polyester composite material comprises polybutylene terephthalate, polycarbonate, a bromine-containing flame retardant, a synergistic flame retardant and a toughening agent in specific proportions, and the bromine-containing flame retardant comprises a combination of at least two of brominated epoxy resin, brominated polycarbonate or brominated polystyrene; by selecting polybutylene terephthalate and polycarbonate for collocation, and adding at least two specific bromine-containing flame retardants and synergistic flame retardants for flame-retardant modification, the obtained polyester composite material not only has excellent flame-retardant performance, but also has a low amount of die drool when being extruded in an extruder die, thereby effectively avoiding the problem that the die drool is carbonized at high temperature and then flows into the product to contaminate the product, and effectively improving the product quality of the finally obtained polyester composite material.

The present application relates to a kind of preparation methods of high loft polyester composite fiber, with nano calcium carbonate blend reinforced modified polymer as skin layer component, PET, PTT or PBT as core layer component, after spinning, winding using sheath-core spinning process, sequentially through preliminary drawing, acidification treatment, directional hot air treatment, cooling setting, re-drawing high loft polyester composite fiber is prepared;The melting point of skin layer component is lower than core layer component;Acid liquor is one or more above in dilute sulfuric acid, dilute hydrochloric acid and dilute nitric acid with pH 2.5-3.5;The present application utilizes the chemical property of nano calcium carbonate in acid liquor and forms porous structure, under the double influence of gas external force and porous structure, the degree of three-dimensional crimping inside sheath-core composite fiber is further increased, and then the crimping performance, loft performance, mechanical property and moisture absorption and quick drying performance of composite fiber are improved, and the overall process is simple and controllable.

The invention relates to the technical field of polyester fabrics, in particular to a polyester fiber blended shirt fabric and a preparation method thereof.The polyester fiber blended shirt fabric is formed by weaving polyester composite yarn serving as warp and weft through a machine, and the polyester composite yarn is formed by blending first yarn and second yarn according to the mass ratio of (2: 1)-(3: 1); the first yarn is prepared from modified polyester and spandex in a mass ratio of (4: 1)-(7: 1) through a coating spinning process, and the second yarn is prepared from viscose and combed cotton slivers in a mass ratio of (2: 3)-(3: 2) through blending. The polyester resin is modified through the epoxy quaternary ammonium salt antibacterial agent, covalent anchoring-flexible cross-linking modification is achieved, the average antibacterial rate of the fabric is high, the antibacterial fluctuation range is small, the fabric has excellent antibacterial uniformity and stability, meanwhile, the fabric has the soft feeling and the draping feeling, the comprehensive texture requirements of stiff, vertical, elastic and cool feeling needed by high-end shirts are met, and the fabric is worthy of popularization and application. The fabric can be directly used for business shirts, high-end uniform and other scenes.

The present application relates to a kind of antistatic humidity regulating polyester composite fabric and its preparation method.The fabric includes polyester matrix layer, humidity regulating layer, conductive mesh layer and discrete adhesive layer from inside to outside.The humidity regulating layer is polyvinyl alcohol and polyurethane interpenetrating network porous membrane, the thickness is 15-40 μm, and its calcium chloride mass fraction and pore size increase along the film thickness direction, with good humidity regulating performance;The conductive mesh layer is woven by core-sheath type conductive filament, which enhances the antistatic performance of the fabric;Discrete adhesive layer is point-like heat-light curing acrylate adhesive, which ensures stable bonding between layers and maintains good moisture permeability.The preparation method includes freeze-thaw cycle preparation of humidity regulating layer, corona treatment of conductive mesh layer and light curing process of discrete adhesive layer.The composite fabric has excellent humidity regulating effect, antistatic performance and good wearing comfort.

The application discloses a kind of carbonic anhydrase catalysis CO2 Mineralization enhanced bamboo fiber composite material and preparation method thereof, belong to environmental protection material field.The composite material formula includes by weight parts 15-20 parts of terephthalic acid, 1,4-butanediol 16-25 parts, catalyst 0.2-1 part, bamboo fiber 50-55 parts, calcium chloride 5-8 parts, carbonic anhydrase 0.01-0.03 parts, pH regulator 1-2 parts, antioxidant 0.3-1 part.The preparation process is first used carbonic anhydrase mineralization bamboo fiber, and obtains mineralization bamboo fiber, and PBT is synthesized under the catalysis of catalyst to obtain mineralization bamboo fiber-PBT copolyester composite material.The composite material prepared by the scheme has the characteristics of degradability, low cost, good interfacial compatibility and excellent mechanical properties.

Provided is a method for efficiently recovering a polyester from a polyester composite material containing a polyester and a resin material other than the polyester. A recovery method for a polyester substrate, which includes a step of bringing a polyester composite material containing a polyester substrate and a layer of a readily decomposable crosslinker into contact with a solution containing an oxidizing agent.

The present application relates to the field of furan-based polyester composite materials, and particularly relates to a high-mechanical-property, high-barrier, degradable polydopamine nanosheet / furan-based polyester composite material and a preparation method thereof. By blending polydopamine nanosheets, the degradable furan-based polyester has the advantages of hydrogen bonding and nanocomposite modification, and is endowed with diversified comprehensive performance. The polydopamine nanosheet, dimethyl 2,5-furandicarboxylate, aliphatic dicarboxylic acid dimethyl ester, aliphatic diol and catalyst are put into a reaction container to perform ester exchange and polycondensation reaction, so as to obtain an in-situ blended polydopamine nanosheet / furan-based polyester composite material. The method is simple in process, and the polydopamine nanosheet / furan-based polyester composite material prepared by the method has excellent mechanical property, gas barrier property and biodegradability.

This invention relates to an anti-wrinkle polyester fabric and its preparation method. The anti-wrinkle polyester fabric of this invention can be obtained by the following method: First, styrene-butadiene copolymer is incorporated into polyester particles to obtain polyester composite particles containing styrene-butadiene copolymer; second, fibers are obtained by melt spinning; finally, the fibers are spun into yarn, and the yarn is woven into the anti-wrinkle polyester fabric. The warp elastic recovery angle of the polyester fabric prepared by this invention is 45° when unfinished. 。 Upgraded to 109 。 The 63° angle of the elastic recovery when it is never adjusted 。 Increased to 168 。 After 10 washes, the warp elastic recovery angle and warp slow elastic recovery angle of the fabric remained stable without significant weakening.

The invention discloses a liquid crystal polyester composite material as well as a preparation method and application thereof. The liquid crystal polyester composite material comprises the following components in parts by weight: 82-115 parts of liquid crystal polyester; 8-15 parts of a flaky filler; 3-10 parts of a spherical filler; 0.2 to 1.2 parts of fibrous filler; wherein the difference value between the melting point and the crystallization temperature of the liquid crystal polyester composite material is greater than or equal to 48 DEG C; the melt viscosity of the liquid crystal polyester composite material is less than or equal to 15 PaS. According to the invention, fillers with different morphologies are added into the liquid crystal polyester, and the melt viscosity and the temperature difference between the melting point and the crystallization temperature of the liquid crystal polyester composite material are regulated and controlled, so that the liquid crystal polyester composite material has better heat-conducting property and better flowing property.

The utility model belongs to the field of geotextile structures, and particularly relates to a geotextile structure with a polypropylene and polyester composite interwoven layer, which comprises a surface layer, a middle layer and a bottom layer which are sequentially laminated and compounded, and a needling combination part vertically penetrating through the surface layer, the middle layer and the bottom layer, the surface layer is a polypropylene short fiber needle-punched non-woven fabric, the middle layer is a woven fabric formed by interweaving polyester filaments and polypropylene flat filaments, and the bottom layer is a polyester short fiber needle-punched non-woven fabric; the needling combination part is a fiber entangled body; the warps of the middle layer are polyester filaments, and the wefts of the middle layer are polypropylene flat filaments; a four-layer redundant design of a comparison scheme is replaced by a three-layer simplified structure and a vertical needling combination part, polyester filament warp yarns and polypropylene flat filament weft yarns in the middle layer are interwoven to form a high-strength water-permeable channel, and meanwhile, a fiber entanglement body of the needling combination part penetrates through three-layer anchoring, so that the problems of pore blockage and layering risks caused by a glass fiber layer are thoroughly solved; the original unification of obdurability and water permeability is realized.

The utility model discloses a composite steel reinforced coiled plastic continuous pipe which comprises a medium transmission layer, a polyester composite layer is arranged on the outer layer of the medium transmission layer, a steel wire reinforced layer is arranged on the outer layer of the polyester composite layer, and a protective layer is arranged on the outer layer of the steel wire reinforced layer. According to the continuous pipe, the terylene isolation layer is added between the medium transmission layer and the steel reinforcement layer for composite reinforcement, a prepreg tape surface heating and circumferential compression roller device is added, the temperature resistance and strength of the medium transmission layer are improved, the interlayer welding and compact strength are improved, and the problems that the inner pipe is softened, deformed, expanded and embedded into the reinforcement layer, so that the winding angle is changed, the structure is damaged and the service life is prolonged are solved. The coiled tubing has the advantages of being high in ring stiffness, good in rigidity, capable of being coiled, resistant to corrosion, resistant to external pressure, resistant to bending, resistant to torsion, resistant to stretching, resistant to compression and the like.

The invention discloses an enhanced polyester / polyethylene composite film and a preparation method thereof, and belongs to the technical field of composite film preparation. The preparation method of the enhanced polyester / polyethylene composite film comprises the following steps: step 1, preparing polyester composite master batches; 2, preparing a polyethylene composite master batch; and step 3, adding dried polyethylene glycol terephthalate into the extruder A, then mixing and stirring the polyester composite master batch, the polyethylene composite master batch, maleic anhydride grafted polyethylene and polyethylene resin, then adding the mixture into the extruder B, then adding the polyethylene resin into the extruder C, and carrying out extrusion, convergence, cooling shaping, two-way stretching and heat shaping, so as to obtain the composite material. And cooling to obtain the enhanced polyester / polyethylene composite film. The composite film prepared by the method has excellent mechanical properties and wide temperature range performance.

The utility model relates to the technical fields of chemical fiber polyester composite silk master batch preparation technology, concretely is chemical fiber polyester composite silk master batch preparation device, including guide machine, the lower surface of guide machine is installed with processing machine, the one side of processing machine is installed with the blanking tube, one side of guide machine is provided with stabilizing device, and the stabilizing device includes guide rod, and the inside of guide rod and guide machine is rotatively connected, a plurality of placement grooves are set up in the outer surface of guide rod, and the inside between guide machine and processing machine is fixedly connected with auxiliary rod, and the surface of auxiliary rod is slidably connected with the pressing plate, and the inside of pressing plate and guide machine is slidably connected, and the upper surface of guide machine is fixedly connected with the receiving sleeve, and the upper surface between receiving sleeve and pressing plate is fixedly connected with the push spring. The utility model, through setting stabilizing device, can effectively conveniently prepare device to raw material and carry out stable pelletizing, avoided the situation that raw materials will shake, deviate or accumulate at the feed inlet of guide machine, and then improved the granulation quality of preparation device.

The application belongs to the technical field of sound insulation materials, and relates to a sound insulation polyester composite fiber and a preparation method thereof. The preparation method comprises the following steps: sequentially arranging polyester POY fibers and sound insulation polyester FDY fibers in parallel through a pre-network, a first roller, a first heat box and a cooling plate; then passing the polyester POY fibers through a false twister, and twisting the polyester POY fibers and the sound insulation polyester FDY fibers at a second roller; and then sequentially arranging the twisted polyester POY fibers and the sound insulation polyester FDY fibers through a network, an auxiliary roller, a second heat box, a third roller, an oiling device and a winding device to obtain the sound insulation polyester composite fiber. The sound insulation polyester FDY fibers are compounded with the polyester POY fibers to obtain the sound insulation polyester composite fiber. The sound insulation performance of the fiber is further enhanced, and the sound insulation polyester FDY fibers are fluffy and have a fuller pile feeling.

The invention relates to a block copolymer dispersing agent, a preparation method of the block copolymer dispersing agent, a graphene-silicon dioxide aqueous dispersion, a graphene modified silicon dioxide composite material, a graphene-polyester composite thermal insulation fiber and application of the graphene-silicon dioxide aqueous dispersion, the graphene modified silicon dioxide composite material and the graphene-polyester composite thermal insulation fiber. And a good combination effect is achieved on hydrophilic vapor-phase silicon dioxide and graphene oxide, so that effective dispersion of silicon dioxide and graphene is achieved. The graphene oxide and the hydrophilic vapor-phase silicon dioxide are dispersed by the block copolymer dispersing agent and then are melt-blended with the polyester fiber, so that the graphene-polyester composite thermal insulation fiber which is better in flexibility, high in antistatic effect and better in hygroscopicity is obtained.

The invention discloses a conductive polyester composite filament and a preparation method thereof, and particularly relates to the technical field of fiber material preparation, polyester is used as a matrix, a nanoscale composite conductive agent is added into the matrix, the composite conductive agent is composed of conductive carbon black and carbon nanotubes, and the conductive carbon black and the carbon nanotubes are arranged in the matrix. The addition amount of the composite conductive agent is 3%-10% of the total mass of the composite filament, and the composite conductive agent is uniformly dispersed in the terylene matrix in a nanometer scale to form a continuous conductive path. According to the invention, nanoscale conductive carbon black and carbon nanotubes are compounded to construct a point-line combined stable three-dimensional conductive network, excellent conductivity is realized under a relatively low additive amount, damage of high filling to mechanical properties of fibers is effectively avoided, and a core process of pre-dispersion combined with double-screw high-shear blending or in-situ polymerization is adopted, so that the preparation method has the advantages of simple process, low cost and high performance. The problem of uniform dispersion of the nano conductive agent is solved, and a formed conductive path is firm in structure and durable and stable in performance.

The invention discloses a high-performance and low-total-carbon-emission polyester composite material and a preparation method thereof. The polyester composite material is prepared from the following components in parts by weight: 97.2 to 117.4 parts of polyester, 7.4 to 11.5 parts of low-emission filler and 0.1 to 0.5 part of antioxidant. The low-emission filler is mesoporous zinc oxide grafted glycidyl methacrylate, on one hand, mesoporous zinc oxide is a mesoporous substance and can adsorb small-molecule volatile gas, so that the total carbon emission performance of the material becomes good; on the other hand, epoxy groups in glycidyl methacrylate react with hydroxyl groups on the surface of mesoporous zinc oxide, and glycidyl methacrylate has good compatibility with polyester and plays a role of a bridge, so that the compatibility between the polyester and the low-emission filler is improved, and the total carbon emission performance of the polyester is improved; meanwhile, the mechanical property is good.

The invention relates to the technical field of engineering plastics, in particular to a high-performance polyester composite material as well as a preparation method and application thereof. The high-performance polyester composite material is prepared from 35 to 60 parts of polybutylene terephthalate, 10 to 20 parts of brominated flame retardant, 2 to 6 parts of flame-retardant synergist, 1 to 5 parts of flexibilizer, 10 to 40 parts of glass fiber, 0.1 to 1 part of antioxidant, 0.1 to 2 parts of lubricant and 0.1 to 0.6 part of flow promoter, the intrinsic viscosity of the polybutylene terephthalate is 0.75 to 1.0 dl / g; the glass fibers comprise alkali-free short glass fibers and ground glass fibers; the flow promoter is a hyperbranched polymer containing hydroxyl. The high-performance polyester composite material provided by the invention has good comprehensive performance of high fluidity, low floating fiber, low warping and high strength, can be applied to the fields of automobiles and electronic and electric appliances, and particularly has good application prospects in thin-walled products with complex structures.

The invention relates to the technical field of polyester composite films, and particularly discloses a polyester composite film with excellent barrier property and a preparation method thereof. The polyester composite film is prepared from the following raw materials in parts by weight: 100 parts of terephthalic acid, 5 to 15 parts of pyrazine dicarboxylic acid, 60 to 80 parts of aliphatic dihydric alcohol, 10 to 20 parts of piperazine diol, 5 to 10 parts of 4, 5-bis (hydroxymethyl) imidazole modified montmorillonite, 0.01 to 0.1 part of antimony catalyst and 0.5 to 2 parts of zinc salt. Heterocycle polar sites of pyrazine dicarboxylic acid and piperazine diol not only enable a compact molecular chain piled structure to be formed in the polyester composite film, but also can form a strong hydrogen bond network, so that efficient synergistic barrier of oxygen, water vapor and carbon dioxide is realized; meanwhile, a segmented polymerization process of pre-polycondensation and then polycondensation is adopted, so that the barrier property of the obtained composite film is remarkable, and the requirements of high-end application fields on high-barrier materials are greatly met.