219 results about "Polyester composite" patented technology

This invention discloses an ultrafine polyethylene / polyester composite fiber and its preparation method, belonging to the field of composite fiber technology. It solves the problems of poor compatibility between the core and sheath layers, excessive fineness of PE / PET fibers, and difficulties in achieving ultrafine fiber production in existing technologies. The method involves preparing ultrafine polyethylene / polyester composite fibers using a core-sheath composite spinning process. The single filament fineness of the ultrafine polyethylene / polyester composite fiber is 0.6~0.8 dtex. The ultrafine polyethylene / polyester composite fiber has a core-sheath structure, with the sheath material being polyethylene and the core material being a blend of modified polyester and a compatibilizer. The modified polyester molecular chain consists of terephthalic acid segments, ethylene glycol segments, and isophthalic acid segments. The compatibilizer is a graft copolymer of polyethylene and poly(ethylene-co-glycidyl methacrylate)-g-polymethyl methacrylate. The preparation method of this invention is simple and easy to implement, with excellent core-sheath compatibility, which is beneficial for achieving ultrafine fiber production. The composite fiber exhibits excellent performance and can meet the demands of the high-end market.

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 present invention relates to a halogen-free flame-retardant reinforced polyester composite material with high hydrolysis resistance. The hydrolysis-resistant halogen-free flame-retardant reinforced polyester composite material of the present invention comprises a polyester resin, alkali-free glass fiber, a halogen-free flame retardant, an anti-hydrolysis agent, a buffer, an antioxidant, and a lubricant. The alkali-free glass fiber can improve the mechanical strength and impact resistance of the material. The hydrolysis-resistant halogen-free flame retardant, the anti-hydrolysis agent, and the buffer work together to obtain a polyester composite material with high hydrolysis resistance. The flame retardancy meets the UL-94 standard 0.4mm V-0 rating, and after storage in an 85°C / 85% RH environment for 2000 hours, the tensile strength retains 70%.

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.

This invention discloses a method for preparing polyethylene / polyester composite fibers and their applications, belonging to the field of composite fiber technology. It solves the problems of poor compatibility, easy separation of the core and sheath, and poor mechanical properties in existing technologies. The method involves preparing polyethylene / polyester composite fibers by combining sheath and core materials using a core-sheath composite spinning process. The sheath material is polyethylene, and the core material is a blend of polyester and a compatibilizer. The compatibilizer is a graft copolymer of polyethylene and poly(ethylene-co-glycidyl methacrylate). The polyethylene / polyester composite fibers are then carded into a web, heat-dried, and shaped to form polyethylene / polyester composite fiber sheets. The areal density of the polyethylene / polyester composite fiber sheets is 17.8 g / m³. 2 The transverse breaking strength is 5.0~5.6N, and the longitudinal breaking strength is 30.7~35.3N. The preparation method of this invention can effectively reduce the separation and slippage of the core and sheath of polyethylene / polyester composite fibers, and the composite fiber flocs made from polyethylene / polyester composite fibers have excellent mechanical properties.

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 application relates to the technical field of high polymer materials, and discloses a high-hygroscopic polyester composite material and a preparation method thereof. The polyester composite material prepared by the application is prepared by taking PTT polyester and hygroscopic modified polyester as main raw materials and adding a toughening agent, an antioxidant, an ultraviolet absorber and a lubricant, and the fiber yarn prepared by using the polyester composite material has high hygroscopicity while keeping the breaking strength and elongation at break. Therefore, the fabric prepared by taking the composite material as raw material has excellent moisture regain and hygroscopicity.

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 invention discloses an aliphatic dibasic acid-aromatic dibasic acid copolyester-based conductive film and a preparation method thereof, and belongs to the technical field of conductive films, the method comprises the following steps: dissolving aliphatic dibasic acid-aromatic dibasic acid copolyester in an organic solvent to form a solution A; adding a conductive polymer monomer into the solution A, and carrying out ultrasonic dispersion treatment to obtain a uniform suspension B; adding a protonic acid solution into the suspension B, and uniformly stirring to obtain a mixed solution C; under the conditions of stirring and ice-water bath, slowly dropwise adding an oxidizing agent aqueous solution into the mixed solution C, carrying out polymerization reaction, filtering and washing a product until filtrate is neutral, and drying to obtain a conductive polymer / copolyester composite material; and melting the conductive polymer / copolyester composite material to prepare the conductive film. The problems that a conductive network is discontinuous and the degradability and the mechanical property are difficult to balance due to non-uniform dispersion of the conductive filler are solved.

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.

The invention relates to the technical field of composite non-woven fabrics, and particularly discloses a preparation device of a high-filling-power polyester composite non-woven fabric. The device is characterized by further comprising a working roller, the working roller is arranged in the working table, and the working roller decomposes non-woven fabric polyester fiber bundles into single fibers through high-speed rotation; a carding roller; after the working roller splits and flattens single fibers, the rotating carding roller continuously cards the single fibers, impurities and short fibers can be removed in the process, meanwhile, a worker can start the working motor to drive the movable wheel to rotate, the multiple adjusting plates and the carding roller move at the same time, the closer the carding roller is to the working roller, the more sufficient the carding is, and the carding efficiency is improved. The straightening degree, the separation degree, the parallelism degree and the singularization degree of fibers are remarkably improved, the carding rollers are far away from the working rollers, fiber damage is conveniently reduced, the device is suitable for short fibers and crude fibers so as to improve the carding effect, and it can be conveniently guaranteed that the multiple carding rollers can adjust the carding strength and improve the carding effect according to the non-woven fabric cotton material requirements.

The invention discloses a photo-thermal microporous polyester composite fiber as well as a preparation method and application thereof. A photo-thermal functional material is uniformly dispersed on a skin layer of the photo-thermal microporous polyester composite fiber, and a densely distributed closed pore structure is formed on a core layer of the photo-thermal microporous polyester composite fiber. The micro-porous structure in the fiber not only enhances the passive thermal insulation performance, but also improves the light capturing ability of the photo-thermal material through multiple light scattering effects, that is, the active thermal insulation ability of the material is improved while the heat conductivity coefficient of the material is reduced. According to the method, an on-line foaming process and a nano material surface modification process are combined through a melting skin-core spinning assembly, efficient preparation of functional fibers is achieved, the method is high in foaming efficiency and uniform in particle dispersion, the technical bottleneck that foaming and functionalization are difficult to cooperate in a traditional process is broken through, and the method is suitable for industrial production. And a reliable technical path is provided for industrialization of functional composite fibers.

The utility model discloses a stain-resistant and crease-resistant polyester composite fabric which comprises a stain-resistant layer and a polyester fabric layer, the stain-resistant layer and the polyester fabric layer are compounded through point-like hot-melt PU (polyurethane) adhesive; the stain-resistant layer is formed by interweaving warp yarns and weft yarns; the warp yarns and the weft yarns comprise stain-resistant yarns; spandex fiber filaments serve as cores of the stain-resistant yarn, and PTT fibers are wrapped outside the spandex fiber filaments. The polyester fabric layer is formed by interweaving anti-wrinkle yarns; the anti-wrinkle yarn comprises a core yarn and a fasciated yarn, the fasciated yarn is spirally wound outside the core yarn, the core yarn is an elastic filament, and the fasciated yarn is a polyester fiber filament. Based on the stain-resistant and crease-resistant polyester composite fabric, the stain-resistant yarns take the spandex fiber filaments as the core yarns, the crease-resistant yarns take the T400 filaments as the core yarns, and both the stain-resistant yarns and the crease-resistant yarns have excellent elastic resilience, so that the fabric has good crease-resistant performance; the stain-resistant yarn utilizes the stain resistance of the PTT fibers to achieve good stain resistance.

The invention discloses a cationic polyester composite yarn dyeing device, and relates to the technical field of dyeing devices.The cationic polyester composite yarn dyeing device comprises a dip dyeing pool, a pretreatment assembly is arranged on the left side of the dip dyeing pool, a second rack is arranged on the right side of the dip dyeing pool, an extrusion assembly is fixedly installed on the left side of the upper surface of the second rack, and an air drying assembly is installed on the upper surface of the second rack and located on the right side of the extrusion assembly; a tension adjusting assembly is installed above the dip dyeing pool, a rotating shaft is rotationally connected to the middle position of the lower portion in the dip dyeing pool, and at least three sets of stirring blades are fixedly connected to the outer side of the rotating shaft; a first motor for driving the rotating shaft to rotate is fixedly mounted in the middle of the rear side of the dip-dyeing pool. The method has the advantages that the core problems of poor uniformity, low efficiency and high energy consumption in the traditional cationic polyester composite yarn dyeing process are solved, and meanwhile, the product quality traceability is improved through automatic detection and marking.

The utility model discloses a polyester composite archaized museum in the technical field of archaized buildings, which comprises an inner fixing plate, a panel is arranged on one side of the inner fixing plate, a pressing plate is arranged above the inner fixing plate, a clamping plate is arranged on one side of the panel, the clamping plate is positioned between the inner fixing plate and the pressing plate, an inserting rod is arranged on the pressing plate, and the inserting rod is inserted into the inner fixing plate. The utility model solves the problems that the construction of the existing concrete boresight is complicated, the weight of the concrete boresight is large, the concrete boresight is easy to damage after being used for a long time, part of the concrete boresight can be prefabricated into the required shape, and the construction cost is low. In the prior art, the problem of large weight also exists, potential safety hazards are easily caused, a small part of the boresight is made of wood, the corrosion resistance of the wood is generally lower than that of a PET material, the existing PET material is rarely applied to the boresight, and the assembly is not convenient enough.

The invention relates to the technical field of high-temperature-resistant polyester composite materials, in particular to a high-temperature-resistant polyester composite material and a preparation method thereof.The high-temperature-resistant polyester composite material is prepared from polyester resin, a brominated flame retardant, a synergistic flame retardant, an antioxidant A, a lubricant A, irradiation master batches and glass fibers. The irradiation master batch promotes the cross-linking reaction of the polyester resin to form a three-dimensional network structure; the glass fiber is used as a reinforcing material and has a synergistic effect with the irradiation master batch, so that the mechanical strength, the heat resistance and the dimensional stability of the polyester composite material are remarkably improved, the sliding of a polyester molecular chain is limited, the thermal deformation is reduced, and the thermal deformation temperature of the polyester composite material is jointly improved. After being subjected to special irradiation treatment, the material has higher heat deformation temperature and lower melt flowability, can bear an SMT process without deformation, bubbling or collapse, has remarkable long-term heat resistance, and can bear continuous high temperature without softening deformation.

The utility model discloses easy-to-dye polyester composite cloth which comprises an easy-to-dye polyester fabric layer and an antibacterial skin-friendly fabric layer which are compounded with each other, the easy-to-dye polyester fabric layer is formed by interweaving easy-to-dye polyester covering yarns, and the easy-to-dye polyester covering yarns comprise core yarns and easy-to-dye polyester fibers covering the outer sides of the core yarns. According to the polyester composite cloth easy to dye, the outer layer is formed by interweaving the polyester fiber covering yarns, so that the fabric layer has the effect of being easy to dye. And the antibacterial skin-friendly fabric layer is used, so that clothes made of the composite cloth have antibacterial and skin-friendly effects, and the wearing comfort is improved.

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.