619 results about "Polyethylene terephthalate" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-strength papermaking forming net fiber. Comprising the following raw materials in parts by weight: 75-90 parts of polyethylene glycol terephthalate, 5-15 parts of polybutylene terephthalate, 3-10 parts of a modified fiber filler, 2-5 parts of modified graphene, 2-8 parts of silicon dioxide, 0.5-2 parts of a silane coupling agent KH-560, 1-3 parts of an anti-hydrolysis agent, 0.5-1.5 parts of an antioxidant and 0.3-1 part of a lubricant. Wherein the modified fiber filler is prepared by sequentially carrying out modification processes such as silane coupling agent, citric acid-glycerol esterification, iron bismuth oxide loading and the like on glass fibers; the modified graphene is prepared by introducing dopamine, cerium ions and glycidyl methacrylate for modification. The mechanical strength, the hydrolysis resistance and the wear resistance of the fiber are remarkably improved through the synergistic effect of all the components and the melt spinning-multi-stage stretching process, and the fiber is particularly suitable for a forming net of a high-speed paper machine.

The invention relates to the technical field of biological materials, in particular to a pillararene-based photoresponse MOF-based ion gating nanochannel and a preparation method thereof. According to the pillararene-based photoresponse MOF-based ion gating nano-channel, a bullet-shaped nano-channel is prepared by taking PET (Polyethylene Terephthalate) as a substrate, and the substrate can provide structural support; p5A-MOF-1 based on pillararene is used as a core functional layer, and the core functional layer can provide a stable cavity environment; a P5A-MOF-1 cavity is filled with an organic aromatic azo compound, so that the light response structure change is realized. And the effective volume of the P5A-MOF-1 cavity is regulated and controlled through the photoisomerization effect of the azo group, so that precise gating of ion transmission is achieved. The preparation method provided by the invention is simple and convenient to operate, mild and controllable in condition and beneficial to large-scale production.

The application discloses a medical natural antibacterial and antiviral mildew-proof wet non-woven fabric and a preparation method and application thereof, and belongs to the technical field of medical polymer materials and textiles. The non-woven fabric is prepared from the following raw materials: polyethylene terephthalate long fibers, polyethylene terephthalate short fibers, vinylon fibers and natural antibacterial and antiviral ultraviolet slow-release glue solution. The non-woven fabric is endowed with natural and non-toxic antibacterial and antiviral effects by using the extract of Chinese herbal medicine effective components. Meanwhile, the mechanical properties and the antibacterial and antiviral capacity of the non-woven fabric can be effectively improved by adding nano materials with far infrared function after surface modification to prepare high-efficiency natural antibacterial and antiviral ultraviolet slow-release microcapsule glue solution. The method improves the added value and application field of the wet non-woven fabric and is convenient for large-scale processing and production. The prepared wet non-woven fabric has excellent performance indexes, good air permeability and an antibacterial and antiviral efficiency of 99.99%.

The utility model discloses heat insulation type laminated iron, which comprises a metal substrate and a PET (polyethylene terephthalate) layer adhered on the surface of the metal substrate, the PET layer comprises a base layer and a conical array structure formed on the surface of the base layer, the conical array structure comprises a plurality of conical convex structures, and an Ag layer and an oxide protection layer are sequentially arranged on the side surface of each conical convex structure. According to the laminated iron, the reflectivity of the laminated iron in an infrared band can be improved, the heat insulation performance of a material is enhanced, meanwhile, the risk of migration of harmful substances is avoided, and the laminated iron has good safety.

The invention discloses an adhesive tape with high stripping stability and a preparation process thereof. The adhesive tape comprises a PET (Polyethylene Terephthalate) base material subjected to corona treatment, an acrylic acid pressure-sensitive adhesive layer, a release layer and an antistatic liquid coating. The acrylic pressure-sensitive adhesive layer is composed of acrylate monomers, saturated polyester resin, bisphenol F, bisphenol A epoxy resin and amino resin. The preparation process comprises the steps of corona pretreatment of the polyethylene glycol terephthalate base material, coating of the antistatic liquid, coating of the pressure-sensitive adhesive, compounding of the release layer and curing treatment. The stripping force change rate of the adhesive tape after damp-heat aging and low-temperature aging is smaller than 5% and is far lower than the industrial standard, and the adhesive tape has excellent stripping stability, antistatic property and weather resistance and is suitable for the fields of electronic product protection, automobile paint spraying shielding and the like.

The invention discloses an antibacterial food composite bag and a preparation method thereof, and relates to the technical field of food packaging. The antibacterial food composite bag at least comprises a polyethylene glycol terephthalate outer layer, an aluminum foil middle layer and an antibacterial polyethylene inner layer, the antibacterial polyethylene inner layer comprises the following raw materials in parts by mass: 100 parts of low-density polyethylene, 6-8 parts of a modified halloysite loaded origanum vulgare essential oil antibacterial agent, 1-3 parts of a silver-carbon dot composite antibacterial agent and 5-15 parts of low-density polyethylene grafted acrylic acid; 0.5 to 1.5 parts of an antioxidant; and 0.1 to 0.3 part of an initiator. The modified halloysite loaded origanum vulgare essential oil antibacterial agent and the silver-carbon dot composite antibacterial agent are compounded for use, so that the prepared antibacterial food composite bag has the advantages of wide antibacterial spectrum and long time efficiency, and the shelf life of food can be prolonged.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

The invention discloses a recovery process of waste PET (polyethylene glycol terephthalate), which comprises the following steps: dissolving waste PET by using a good solvent, dropwise adding into cold methanol, precipitating, filtering, separating, drying, and hydrolyzing the waste PET by using a low-concentration sodium hydroxide aqueous solution, so that the PET can be effectively hydrolyzed at a relatively low temperature (25-40 DEG C), the reaction conditions are mild, the reaction time is short, the yield is high, and the recovery process is suitable for industrial production. The yield of the product TPA is up to 99%, the product TPA is easy to separate, and the solvent can be recycled.

The present disclosure relates to a polyester resin blend. The polyester resin blend can provide a thick container with high transparency even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate. In addition, the resin blend can be reused by itself, and is expected to be useful for providing continuously usable plastics that have been recently attracting attention.

The invention relates to the technical field of electrical equipment, in particular to a moisture-proof impregnated paper composite insulating sleeve and a preparation method and application thereof. The moisture-proof impregnated paper composite insulating sleeve provided by the invention comprises an impregnated paper capacitor core body and a moisture-proof enhancement layer on the outer surface, the moisture-proof reinforcing material comprises at least one of glass fiber, polyester and polyolefin, and the polyester comprises polyethylene glycol terephthalate; the impregnated paper capacitor core body comprises a central conductive tube, impregnated paper and a capacitor plate; the impregnated paper and the capacitor plates are alternately coated on the outer surface of the central conductive tube from inside to outside, and the impregnated paper or the capacitor plates are arranged on the outermost layer of the impregnated paper capacitor core body. According to the invention, the moisture-proof reinforcing layer is arranged on the outer surface of the impregnated paper capacitor core body, so that moisture in air during storage and trace moisture in transformer oil during operation can be effectively prevented from invading the impregnated paper capacitor core body, the capacitor core body is prevented from being affected with damp, the electrical property is reduced, the mechanical bending strength is enhanced, and the service life of the capacitor sleeve is prolonged.

The invention belongs to the field of special adhesives, and discloses an all-polymer super-water-resistant UV pressure-sensitive adhesive capable of being rapidly cured and a formed pressure-sensitive adhesive tape. The pressure-sensitive adhesive is prepared by polymerizing a free radical thermal initiator, a chain transfer agent, an inert organic solvent and 100 parts by mass of (methyl) acrylate at 75-85 DEG C, heating, and carrying out reduced pressure distillation to remove the solvent. The pressure-sensitive adhesive is coated on a PET (polyethylene terephthalate) or BOPP (biaxially-oriented polypropylene) film base material in a hot melting manner or a solution manner, and is irradiated by ultraviolet light to obtain the formed pressure-sensitive adhesive tape. The prepared pressure-sensitive adhesive can be rapidly cured, and the cured pressure-sensitive adhesive tape also has relatively high peel strength, high holding power and stability, has no adhesive residue, and has a wide application prospect in humid and water environments.

The invention provides a method for enabling an optical fiber module interface radiator to be closely attached to an indium heat-conducting sheet. The method comprises the steps that the surface of a nickel-plated layer of the interface radiator is polished to form a rough surface; preliminarily forming an indium heat-conducting sheet on the rough surface; then the workpiece is placed on a jig platform, and a mirror surface roller is arranged on the jig platform; providing a PET (Polyethylene Terephthalate) sheet which is positioned between the surface of the indium heat-conducting sheet and the mirror roller; the method comprises the following steps: pressing an indium heat-conducting sheet into a roller under the roller pressure of 40-110kgf, riveting the bottom of the indium heat-conducting sheet into a rough surface which is tightly combined with the interface radiator, so that a gap and air do not exist on the combined surface, and the top surface of the indium heat-conducting sheet is a flat smooth surface, is attached to the surface of the interface radiator and is tightly combined and molded into an indium heat-conducting thin layer; the surface of the indium heat conduction thin layer is coated with an anti-oxidation coating with the thickness of 1-5 microns; therefore, the indium heat-conducting material can be tightly adhered to the surface of the interface radiator without an adhesive, the interface radiator has excellent drawing resistance and friction resistance, and the influence of thermal resistance caused by air and the adhesive is reduced.

The invention relates to the technical field of waste plastic resource utilization, and particularly provides a method for preparing glycollic acid through high-selectivity photoelectrocatalytic oxidation of polyethylene glycol terephthalate (PET) plastic. The core of the method is that a carbon nitride film loaded and modified by heteroatom doping (sulfur / phosphorus and the like) and an oxidation co-catalyst (Ni (OH) 2, NiFeOOH and the like) is used as a photo-anode, and under the conditions of certain bias voltage, electrolyte pH and composition and light source wavelength, PET oxidation is guided to generate glycolic acid with high selectivity. According to the method, efficient conversion from the PET waste plastics to high-value chemicals is achieved, the Faraday efficiency of glycollic acid in the product can reach 75% or above, and an innovative technical path is provided for plastic pollution abatement and waste turning into wealth.

The present application relates to a kind of polyethylene terephthalate foamed materials and its preparation method, the preparation method includes the following steps: polyethylene terephthalate material is heat pressed, and the preform of molten state is obtained;The preform of molten state is treated with melt isothermal crystallization and quenching, and sheet material is obtained;And the sheet material is treated with foaming, and polyethylene terephthalate foamed material is obtained.The present application uses melt isothermal crystallization treatment, can improve the melt strength in the foaming process of polyethylene terephthalate, strengthens its foaming performance, simultaneously can also be realized by strengthening bubble nucleation and controlling bubble growth to adjust the bubble morphology of foamed material, so can obtain the polyethylene terephthalate foamed material of bubble size uniform and controllable foaming ratio.

The invention is applicable to the technical field of table-board printing, and particularly relates to a table-board printing method for improving oil sticking of a table-board of an IC (integrated circuit) support plate solder-resistant DI (direct-input) exposure machine, which comprises the following steps of: placing a PET (polyethylene terephthalate) support film on the table-board of the exposure machine, and fixing the PET support film above the exposure table-board; the Bot face of the plate faces downwards, the plate is placed above the PET carrier film, and vacuum adsorption is conducted on the plate; and performing alignment treatment, performing exposure operation after alignment is completed, turning over the plate after Bot surface exposure is completed, and performing exposure operation on the Top surface. The method solves the problem that oil adheres to a table board due to poor appearance of the carrier board after DI exposure of resistance welding, is suitable for products such as IC carrier boards, PCBs, HDI and FPCs, can effectively improve the qualified rate of factory products, and reduces the rejection rate in a factory; meanwhile, the problems of appearance suction marks, plate sticking and poor oil falling are effectively solved, the finished product quality of products can be improved, the replacement cost of the DI exposure table top is effectively saved, table top abrasion is effectively reduced, and the regular replacement frequency is reduced.

The invention provides a polymer floor and a preparation method thereof. The floor sequentially comprises a first outer layer, a first buffer layer, a first bonding layer, a base material layer, a second bonding layer, a second buffer layer and a second outer layer from top to bottom, wherein the base material layer is made of a first polymer, and the first polymer is selected from one or a mixture of more of PVC (polyvinyl chloride), PET (polyethylene glycol terephthalate), PETG (polyethylene glycol terephthalate) and TPU (thermoplastic polyurethane); wherein the first buffer layer and the second buffer layer are respectively and independently selected from one or more of non-woven fabrics and glass fiber mats; wherein the first bonding layer and the second bonding layer are blended membranes of grafted resin and a second polymer, and the second polymer is selected from one or a mixture of more of TPU (thermoplastic polyurethane), EAA (ethylene-acrylic acid copolymer) and PETG (polyethylene terephthalate glycol); wherein the first outer layer and the second outer layer are impregnated with glue.

The invention discloses a method for preparing an aromatic phosphate salt nucleating agent by using nanoscale aluminum chloride, and belongs to the technical field of polymer nucleating agents. 2, 2-methylene-bis (4, 6-di-tert-butylphenol) and phosphorus oxychloride are used as raw materials, the nanoscale aluminum chloride with the particle size of 20-50nm is selected as an inorganic Lewis acid catalyst and acid binding agent, and the aromatic phosphate salt nucleating agent is prepared by using a one-step method. The preparation method comprises the following steps: replacing the traditional organic acid-binding agents such as triethylamine and pyridine, and synthesizing bis [2, 2 '-methylene bis (4, 6-di-tert-butylphenoxy) phosphate] hydroxyl sodium salt by a one-pot method of condensation, hydrolysis for salt removal and neutralization for salt formation; the purity of the product can reach 99% or above through one-time suction filtration, multiple times of washing are not needed, salt-containing wastewater can be recycled as industrial water after being neutralized, and the environmental protection pressure is greatly reduced; the nucleating agent is suitable for modification processing of polymers such as polypropylene (PP), polyethylene glycol terephthalate (PET), polybutylene terephthalate (PBT), polyamide (PA) and the like, and especially meets the strict requirements on the purity and environmental protection property of the nucleating agent in an olefin polymerization process.

The utility model discloses a surface dust removal device for PET (Polyethylene Terephthalate) adhesive tape production, which comprises a working table, a mounting seat is arranged above the working table, the top of the mounting seat is connected with an air pump, the side surface of the air pump is provided with an air outlet pipe, the outside of the air outlet pipe is connected with an air delivery pipe, and the bottom of the air delivery pipe is connected with a blowing nozzle. And a first vertical plate and a second vertical plate are mounted at the top of the workbench. According to the surface dust removal device for PET adhesive tape production, an air pump and an air outlet pipe are installed at the top of the workbench, a thick dust removal roller and a small dust removal roller are installed at the top of the workbench, dust outside an adhesive tape can be conveniently removed, an air pump structure is started, and air blown out of a blowing nozzle can blow away the dust outside the adhesive tape; meanwhile, the adhesive tape penetrates through the dust removal roller assembly, dual-surface dust removal is achieved, dust removal is faster during use, and more time and labor are saved.

This polyester resin composition contains a polybutylene terephthalate resin, a recycled polyethylene terephthalate resin, a transesterification inhibitor, a carbodiimide compound, and an elastomer. The amount of terminal hydroxyl groups in the polybutylene terephthalate resin is 30-70 mmol / kg relative to the total amount of the polybutylene terephthalate resin and the recycled polyethylene terephthalate resin. The amount of the carbodiimide compound is 0.2-1.5 mass% relative to the total amount of the polyester resin composition. The amount of the elastomer is 3-15 mass% relative to the total amount of the polyester resin composition.

The invention relates to the technical field of functional materials, in particular to a sound-absorbing metal plate and a preparation method and application thereof. According to the sound-absorbing metal plate provided by the invention, the metal panel, the functional inner core and the back plate are adopted, and the core is that the sound-absorbing structure of the functional inner core is utilized, so that the noise reduction coefficient is more than 0.95. Specifically, according to the sound-absorbing metal plate provided by the invention, ethylene-vinyl acetate and polyethylene glycol terephthalate are adopted as basic resin, and the pore structure of the functional inner core is controlled by utilizing the synergistic effect of the foaming agent and the cross-linking agent, so that the pore structure is more beneficial to efficient absorption and reduction of sound reflection. According to the sound-absorbing metal plate, the functional inner core is further arranged between the metal face plate and the back plate, the sound-absorbing function and the structural stability of the functional inner core are further enhanced, and the sound-absorbing metal plate provided by the invention achieves the optimal performance. The sound-absorbing metal plate provided by the invention has the advantages of favorable flame retardancy, favorable safety, decoration and beautification functions and favorable overall effect.

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 invention relates to the technical field of recycling equipment, in particular to a feeding mechanism and a PET bottle flake dewatering device comprising the same, the feeding mechanism comprises a material conveying module, the material conveying module comprises a driven assembly, a fixed guide assembly and an auxiliary discharging assembly, the driven assembly comprises a driven disc fixedly connected with a spiral material conveying rod, and the fixed guide assembly is fixedly connected with the spiral material conveying rod; the driven disc is provided with a rolling piece in rolling fit with the guiding piece, and the guiding piece is provided with a slope part used for driving the rolling piece to drive the driven disc and the spiral conveying rod to move axially and a multi-step part used for allowing the rolling piece to fall step by step so as to generate vibration. And the rotary motion of the driving shaft is converted into rotation and axial reciprocating motion of the spiral material conveying rod. According to the material conveying device, wet and easily-caked materials can be effectively pushed to be conveyed forwards, the caked materials are prevented from being clamped between the spiral material conveying rod and the feeding barrel, and compared with a traditional structure only depending on rotary conveying, the passing ability and the continuous conveying capacity of the caked materials are remarkably improved.

A filtration membrane that includes a nonwoven textile, the nonwoven textile including polyethylene terephthalate. The filtration membrane includes a first layer of carboxylate-containing polymer disposed on the nonwoven textile. The filtration membrane further includes a second layer, which includes polypyrrole disposed on the first layer. The polypyrrole is connected to the first layer by hydrogen bonds between the amine groups present in the polypyrrole and the carboxylate groups present in the carboxylate-containing polymer. The membrane is effective in removing organic pollutant from water.

A panel, particularly for a piece of furniture, comprises plastic, in particular thermoplastic plastic, in particular polyethylene terephthalate. The panel has a first main surface (3), an opposing second main surface (4) and at least one edge region (5), which in turn has at least one edge-side recess (6) and at least one edge surface (8) extending between the first main surface (3) and the second main surface (4), which spatially delimits the at least one edge-side recess (6).

The aim is to improve overall performance, including rolling resistance, tire durability at high speeds, and handling stability. [Solution] A tire comprising a carcass with carcass cords, a belt with belt cords provided on the radially outer side of the carcass, a band with band cords provided on the radially outer side of the belt, and a tread provided on the radially outer side of the band, wherein the band cords are band cords containing polyethylene terephthalate fibers, and the tread is formed using a rubber composition containing more than 50 parts by mass of styrene-butadiene rubber (SBR) with a styrene content of less than 25% by mass in 100 parts by mass of rubber component, and furthermore, when the thickness of the tread is T (mm), the amount of styrene in the styrene-butadiene rubber is S (mass%), and the diameter of the band cord is D (mm), the tire satisfies the following (Formula 1). T×S×D<80 (Formula 1)

Provided is a method for producing an olefin, which can reduce the decrease in catalytic activity of a zeolite even when a polyolefin containing polyethylene terephthalate is used as the raw material. [Solution] The manufacturing method of the present disclosure has the following steps: Step S12: A step of obtaining hydrocarbons by thermally cracking a raw material containing polyolefin and polyethylene terephthalate. Step S13: A step of obtaining olefins by catalytically cracking the hydrocarbons using a catalyst containing zeolite. In Step S12, the content of polyethylene terephthalate in the raw material is 0.1 mass% or more, where the total content of polyolefin and polyethylene terephthalate is 100 mass%. In Step S13, the amount of acid sites of the catalyst containing zeolite is 30 to 800 μmol / g, as measured by ammonia temperature programmed desorption at 250 to 650°C.

Provided is a container obtained by blow molding or stretch blow molding from a preform made of polyethylene terephthalate and manufacturing methods of containers. The container includes a body, a shoulder extending the upper end of the body, a neck extending from the shoulder, and a bottom which extends at a lower end of the container. The neck can be open and form a rim of the container. The container can be intended to receive a liquid or semi-liquid dairy product such as milk, which can be distributed through a cold chain or at ambient temperature.

A purpose of the present invention is to provide a polyethylene terephthalate film for foldable displays and the like that have a sufficient elastic modulus in tension required of films for foldable displays and that has excellent flexural rigidity. Portable terminals or image display devices including, mounted therein, the polyethylene terephthalate film for foldable displays provide beautiful images, are highly functional, and have excellent convenience including portability and the like.　The polyethylene terephthalate film for foldable displays has an MD flexural rigidity Fa and a TD flexural rigidity Fb in terms of flexural rigidity for 15-μm thickness, the sum of Fa and Fb being 0.05 gf·cm2 / cm or greater, and has a longitudinal-direction elongation at break of 10% or higher and a width-direction elongation at break of 10% or higher. The poly ethylene terephthalate film can be folded along both a first bending direction and a second bending direction, which is orthogonal to the first bending direction.

The utility model relates to the field of PET (Polyethylene Terephthalate) films, in particular to a PET film electrostatic treatment liquid coating device. The utility model provides a PET (polyethylene terephthalate) film electrostatic treatment liquid coating device which comprises a base, a support frame, a sliding frame, a coating wheel, an air cylinder, a winding rod, a first motor and the like, the upper middle part of the base is connected with the support frame, the air cylinder is arranged on the upper side of the support frame, the telescopic end of the air cylinder penetrates through the support frame and is connected with the sliding frame, and the sliding frame is in sliding fit with the support frame; the lower side of the sliding frame is rotationally connected with a smearing wheel, the surface of the smearing wheel is covered with a smearing sleeve, a first motor is installed on the rear right side of the base, and an output shaft of the first motor penetrates through the base to be connected with a winding rod. Through the arrangement of the mounting frame, the guide rod, the screw rod, the scraping plate and the second motor, the output shaft of the second motor drives the screw rod to rotate, and the screw rod drives the scraping plate to reciprocate, so that the residual anti-static liquid on the smearing sleeve can be quickly and thoroughly scraped, and the equipment is always kept in the optimal working state.

A polyester resin composition exhibits high heat resistance, low gas content, and the ability to significantly suppress mold contamination during continuous molding and to inhibit flow marks. The polyester resin composition comprises: a polyester resin A containing 82-88% by mass of polybutylene terephthalate resin and 12-18% by mass of polyethylene terephthalate resin; an organometallic acid salt B, selected from one or both of alkali metal organometallic acid salts and alkaline earth metal organometallic acid salts; 1-13 parts by mass of an inorganic filler C with an average particle size of 0.05-3 μm relative to 100 parts by mass of the polyester resin A; and 0.000005-0.05 parts by mass of one or both of alkali metal atoms and alkaline earth metal atoms relative to 100 parts by mass of the polyester resin A; and the content of linear oligomers such as polybutylene terephthalate is less than 1000 mg / kg.