48 results about "Polytrimethylene terephthalate" patented technology

The purpose of the present invention is to provide: a low-shrinkage fiber; a method for producing the low-shrinkage fiber; an air-blended yarn comprising the polytrimethylene terephthalate fiber; and a fabric comprising the air-blended yarn. The low-shrinkage fiber is substantially composed of polytrimethylene terephthalate, and can be used to produce a precursor for a fabric, which has a soft texture and a low shrinkage rate due to heat. The present invention is characterized in that 90 mol% or more of polytrimethylene terephthalate fibers are composed of trimethylene terephthalate repeating units, the boiling water shrinkage of the polytrimethylene terephthalate fibers is 5% or less, and the elastic modulus of the polytrimethylene terephthalate fibers at an elongation of 20% is 5 cN / dtex or less.

The invention relates to the field of textile materials, and discloses a multi-thread elastic knitted fabric and a preparation method thereof.The multi-thread elastic knitted fabric is prepared from, by weight, 30 parts of ternary polymerization elastic fibers; 70 parts of modified bamboo fiber; the ternary copolymerized elastic fiber is prepared from the following raw material components in parts by weight: 28-32 parts of polylactic acid; 38 to 42 parts of polytrimethylene terephthalate; 28 to 32 parts of poly (butylene succinate); 1 to 3 parts of graphene nanosheets; 0.5 to 1.5 parts of epoxidized soybean oil; 2 to 4 parts of beta-cyclodextrin; the modified bamboo fibers are subjected to enzymatic treatment, silane coupling agent modification, dopamine coating treatment and ultrasonic treatment. Through micro gradient structure design and multi-step functionalization treatment of the ternary polymerization elastic fibers and the modified bamboo fibers, unification of excellent elastic recovery, comfort, multifunctionality and durability is achieved.

This invention discloses a glass polishing brush, comprising a brush body and bristles distributed on the surface of the brush body. The bristles contain PTT monofilaments. A method for polishing glass using the glass polishing brush is also provided, preferably in combination with a cerium oxide polishing solution. This invention also discloses the use of PTT monofilaments for glass polishing, wherein the diameter of the PTT monofilaments is 4 mil to 30 mil. The glass polishing brush of this invention achieves effective polishing of the glass surface, resulting in a smoother and more even glass surface. Furthermore, compared to other monofilaments, PTT monofilaments do not create numerous deep grooves at the chamfered edges of the glass during the polishing process.

The present invention relates to novel carbodiimides, to a process for their production, and to the use of the novel carbodiimides in ester-based polyols, in polyethylene terephthalate (PET), in polybutylene terephthalate (PBT), in polytrimethylene terephthalate (PTT), in copolyesters, in thermoplastic polyester elastomers (TPE E), in ethylene vinyl acetate (EVA), in polylactic acid (PLA) and / or in PLA derivatives, in polybutylene adipate terephthalate (PBAT), in polybutylene succinate (PBS), in polyhydroxyalkanoates (PHA), in blends, in triglycerides, in thermoplastic polyurethanes, in polyurethane elastomers, in PU adhesives, in PU casting resins, for PU coatings or in PU foams as stabilizers.

The utility model discloses a polyurethane synthetic leather structure for sports and leisure shoes, which comprises a non-woven fabric impregnated polyurethane bottom layer, an organic silicon modified polyurethane micro-foaming layer, a polyurethane foaming layer and a polyurethane surface layer which are sequentially compounded from bottom to top, the tensile modulus of the non-woven fabric impregnated polyurethane bottom layer, the tensile modulus of the organic silicon modified polyurethane micro-foaming layer, the tensile modulus of the polyurethane foaming layer and the tensile modulus of the polyurethane surface layer are gradually increased in sequence, and a base material of the non-woven fabric impregnated polyurethane bottom layer is a non-woven fabric base material formed by co-spinning polytrimethylene terephthalate with Z-shaped conformation and nylon. According to the polyurethane synthetic leather structure for the sports and leisure shoes, the problems that the existing polyurethane synthetic leather for the shoes is rigid in hand feeling and unsatisfactory in fold recovery, and the wearing comfort and attractiveness are influenced are solved.

The present disclosure relates to a nonwoven including a first layer and a second layer. The first layer has first fibers and a first mean pore size. The first fibers have a first fiber fineness. The second layer includes second fibers and a second mean pore size. The second fibers have a second fiber fineness, and the second fiber fineness is equal to or greater than the first fiber fineness, and the second mean pore size is smaller than the first mean pore size. The first fibers may include a polymer and the polymer may include polytrimethylene terephthalate, polybutylene terephthalate and a combination thereof. The second fiber may include a thermoplastic fiber. The nonwoven may be included in an absorbent article. At least one of the topsheet and the fluid management layer of the absorbent article may include the nonwoven.

A foamed polymer composition includes a matrix polymer component, and from 0.01 wt % to 2 wt %, based on the weight of the polymer composition, of a nanostructured fluoropolymer, a nanostructured fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. The matrix polymer component includes polybutylene terephthalate (PBT), polyetherimide (PEI), polyethylene terephthalate (PET), polycarbonate (PC), poly(p-phenylene oxide) (PPO), polystyrene (PS), polyphenylene sulfide (PPS), polypropylene (PP), polyamide (PA), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), copolymers thereof, or a combination thereof. Methods for forming foamed polymer compositions, including core-back molding methods and extrusion foaming methods, are also described.

The invention relates to the technical field of polyester modification, and discloses modified polytrimethylene terephthalate and a preparation method thereof. The modified polytrimethylene terephthalate is formed by copolymerizing monomers including 1, 3-propylene glycol, furandicarboxylic acid, terephthalic acid and modified polyethylene glycol; the modified polyethylene glycol is polyethylene glycol with a sulfonic acid group on a side chain. According to the invention, furandicarboxylic acid and polyethylene glycol with a sulfonic acid group on a side chain are introduced into PTT, so that PTT can have better dyeability and color fastness during cationic dye dyeing.

The present invention discloses an impact-resistant MPP power pipe and its preparation method, belonging to the technical field of power pipe preparation. The preparation method of the impact-resistant MPP power pipe includes the following steps: Step 1: Mix polypropylene, polytrimethylene terephthalate and carbon fiber to obtain a base material; Step 2: Sequentially add a modified flame retardant, a modified toughening agent, a compatibilizer, a coupling agent, a lubricant and an antioxidant to the base material, and fully stir and mix to obtain a mixed material; Step 3: Mix the mixed material using a high-speed mixer, then add it to a twin-screw extruder, extrude, cool and shape, cut and polish to obtain the impact-resistant MPP power pipe. The MPP power pipe prepared by this method has excellent flame retardant performance, mechanical performance, chemical corrosion resistance and impact resistance.

The invention discloses a plant-based antibacterial and deodorant polyester-nylon composite fiber and a preparation process thereof. The fiber has a skin-core-island three-phase structure, wherein a core layer contains a blend of 65-75% by mass of regenerated polyester and 25-35% by mass of polyamide 56, and plant-derived composite antibacterial and deodorant microcapsules with beta-cyclodextrin / melamine resin as a double-layer wall material are uniformly dispersed in the core layer; the skin layer takes bio-based polytrimethylene terephthalate as a matrix and contains 1-3wt% of a nanoscale zinc oxide-chitosan composite antibacterial agent; mint-wormwood-tea polyphenol ternary solidified fibers with root diameters are uniformly distributed in the island phase along the axial direction of the fiber. The preparation process comprises the following steps: mixing the plant-based antibacterial agent and polyester chips according to a ratio of (2-5%): (95-98%), and carrying out melt pelletizing to prepare polyester master batches; mixing the master batch with polyester chips, adding 0.1-0.3% of a stabilizer and a dispersant, blending and granulating, and drying with chinlon chips at 90-120 DEG C for 16-24 hours; and after the two raw materials are melted, co-extrusion drafting is carried out through a three-channel spinning assembly at 250-290 DEG C and 3-6 MPa.

The invention discloses a high-performance AGM separator and a preparation method thereof, and belongs to the technical field of lead-acid battery manufacturing. The high-performance AGM separator comprises the following raw materials in percentage by weight: 95%-99% of modified glass fibers, 0.9%-4% of polytrimethylene terephthalate fibers and 0.1%-1% of a compatilizer, the modified glass fiber is epoxy group modified glass fiber, and the compatilizer is hyperbranched polysilane containing amino, sulfonic acid group and quaternary ammonium salt group. The preparation method of the separator comprises the following steps: mixing the modified glass fiber, the polytrimethylene terephthalate fiber and the compatilizer, pulping, proportioning, deslagging, papermaking, drying, rolling and slitting to obtain the AGM separator. The separator prepared by the method has excellent strength and liquid absorbency.

The invention discloses a preparation method of polytrimethylene terephthalate, which comprises the following steps: mixing raw materials containing terephthalic acid, 1, 3-propylene glycol and a catalyst, and carrying out reaction and polycondensation in an inert gas atmosphere to obtain a product containing polytrimethylene terephthalate, the weight-average molecular weight of the polytrimethylene terephthalate in the product is 15000 to 80000; the catalyst is titanyl acetate. The preparation method provided by the invention is high in yield and short in reaction time, the weight-average molecular weight of the product is large, and the intrinsic viscosity of the product is large and reaches 0.98.

The present invention relates to the field of recycling materials containing polyester terephthalate, particularly polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polytrimethylene terephthalate (PTT), commonly used in the manufacture of disposable plastic bottles, food trays, textiles, and composite insulation materials. It specifically concerns a process for recycling PET into terephthalic diester, and in particular dimethyl terephthalate (DMT), in less than one hour and without any pretreatment steps. Furthermore, this process uses products with a low environmental impact. It is therefore particularly advantageous from an industrial perspective.

The present invention relates to the field of the recycling of materials comprising terephthalate polyester, notably polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) or polytrimethylene terephthalate (PTT), which are commonly used for the manufacture of disposable plastic bottles, food trays, textiles, composite material for insulation, etc. The invention notably relates to a method for recycling PET to a terephthalic diester and notably to dimethyl terephthalate (DMT) in less than one hour and without a pretreatment step. In addition, this method uses products with low environmental impact. It is therefore particularly advantageous from an industrial viewpoint.

The invention belongs to the technical field of composite fiber production, and discloses a low-temperature dyeable elastic composite fiber filament and processing equipment thereof.The composite fiber filament comprises polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and waste recycled polyester fiber which are compounded, the waste recycled polyester fibers are one or more of polytrimethylene terephthalate fibers, polyethylene glycol terephthalate fibers and polybutylene terephthalate fibers. The composite fiber filament formed by compounding the polyamide fiber, the polyphenylene sulfide fiber, the polypropylene fiber and the waste recycled polyester fiber has the comprehensive performance of good fracture resistance, hygroscopicity, dyeability, wear resistance, rebound resilience, corrosion resistance, antibacterial property, aging resistance and the like.

The invention discloses a long-acting anti-precipitation flame-retardant reinforced nylon composite material and a preparation method thereof. The long-acting anti-precipitation flame-retardant reinforced nylon composite material comprises 35-65 parts of nylon 66; 15 to 35 parts of glass fiber; 5 to 15 parts of polytrimethylene terephthalate; 5-15 parts of phenolic resin; 2-10 parts of a flame retardant; 5 to 15 parts of triethoxysilane; 0.1 to 1 part of a toughening agent; 1-7 parts of a coupling agent; 0.01 to 5 parts of an antioxidant; and 0.01-5 parts of a lubricant. According to the long-acting anti-precipitation flame-retardant reinforced nylon composite material provided by the invention, the polytrimethylene terephthalate and the phenolic resin are added into the PA66, so that the water absorption of a nylon matrix is reduced; and hydrolytic migration of the flame retardant is hindered, so that the material has excellent precipitation resistance, the mechanical property is greatly improved, the service life of the product is prolonged, and the cost is reduced.

The application discloses a kind of high wear-resistant green composite functional fibers and its textile fabric.The composite functional fiber is core-shell structure fiber, including core layer component and shell layer component by weight parts, the core layer component includes polytrimethylene terephthalate, polyamide 56, cellulose nanocrystal and maleic anhydride grafting compatilizer, the shell layer component includes bio-based thermoplastic polyurethane and wax-based lubricating microcapsule, and the sum of weight parts of core layer component and shell layer component is 100 parts.By adopting coaxial core-shell composite melt spinning process, and the component allocation and spinning, drafting and heat setting condition are controlled, and composite functional fiber with stable structure is prepared.The fiber disclosed in the application keeps good processing adaptability, and realizes the effect of giving consideration to durable performance and environmental friendly performance.

The invention relates to a high-elasticity fabric and a preparation method thereof, and belongs to the technical field of fabric manufacturing. The high-elasticity fabric comprises composite fibers interwoven into the high-elasticity fabric, and each composite fiber comprises a core fiber, a reinforcing layer wrapping the outer surface of the core fiber and a comfortable outer layer wrapping the outer surface of the reinforcing layer; the core fiber, the reinforcing layer and the comfortable outer layer are respectively prepared into the composite fiber by a first spinning material, a second spinning material and a third spinning material through a coaxial electrostatic spinning process; a first spinning material for forming the core fiber comprises a mixture of PTT (polytrimethylene terephthalate) and graphene; a second spinning material for forming the reinforcing layer comprises a mixture of bio-based PET and nano silicon dioxide; a third spinning material for forming the comfortable outer layer comprises a mixture of copolymerization modified PET and nano ATO. In the fabric, the core fiber provides excellent elasticity; the reinforcing layer provides structural strength and durability; and the comfortable outer layer provides a skin-friendly touch sense and an intelligent heat and humidity management function.

The present invention includes fabrics and yarns comprising a two-component polyester multifilament yarn. The two-component polyester yarn is made from polyethylene terephthalate and polytrimethylene terephthalate in a parallel or eccentric sheath core configuration. Compared to conventional two-component polyester yarns, this yarn has improved bulk and provides a more desirable feel in fabrics.

A kind of ground filament of co-extrusion monofilament with skin-core structure, wherein the core layer includes polybutylene terephthalate PBT and optional additives, the skin layer includes polytrimethylene terephthalate PTT or polybutylene terephthalate PBT and optional additives, at least one end of the co-extrusion monofilament with skin-core structure is chemically treated to be ground, characterized in that wherein the ground filament includes tip region, middle region and rear end region in turn from its tip, wherein the tip region, middle region and rear end region are rough surfaces with different roughness levels;And, tip region length is ≥4mm, middle region length is 4-50mm.

The invention belongs to the technical field of three-dimensional crimped fibers, and relates to a preparation method of furyl bi-component parallel composite elastic fibers, which comprises the following steps: respectively melting raw materials of a component A and raw materials of a component B, and then carrying out parallel composite spinning to obtain the furyl bi-component parallel composite elastic fibers, the component A comprises the following raw materials: furyl polyester, a nucleating agent and polytrimethylene terephthalate; the raw material of the component B comprises polytrimethylene terephthalate; the proportion of the polytrimethylene terephthalate in the component A is lower than 15wt%; or the component A comprises the following raw materials: furyl polyester, a nucleating agent and polybutylene terephthalate; the raw material of the component B comprises polybutylene terephthalate; the proportion of the polybutylene terephthalate in the component A is lower than 15wt%. According to the method disclosed by the invention, PTT or PBT is added into furyl polyester, so that the crimp performance of the fiber is improved.

The application relates to the technical field of layered composite fabrics, and discloses an anti-low-temperature wear-resistant bio-based composite fabric and a preparation method thereof. The preparation method comprises the following steps: spinning bio-based polytrimethylene terephthalate fibers and modified wool fibers to obtain a single-layer blended fabric, impregnating the single-layer blended fabric with a finishing liquid, obtaining an outer layer / inner layer composite fabric after compounding, and coating a polyurethane-based coating material to obtain the anti-low-temperature wear-resistant bio-based composite fabric. The composite fabric has good low-temperature-resistant and warm-keeping performance and good wear resistance.

A sharpened filament coated with silicone oil on the surface and having a skin layer-core layer structure wherein the core layer comprises polybutylene terephthalate (PBT) and an optional additive, the skin layer comprises polytrimethylene terephthalate (PTT) and an optional additive, and at least one end of the filament is sharpened by chemical treatment; the co-extrusion sharpened monofilament with the skin layer-core layer structure is characterized in that the ratio of the skin layer thickness to the monofilament diameter of the co-extrusion sharpened monofilament with the skin layer-core layer structure is 3-20%, preferably 5-15%.

The application discloses a method for recycling polyester by amine decomposition under rare earth catalyst, comprising: under the catalysis of a rare earth catalyst, waste polyester and imidazole salt substances are subjected to amine decomposition reaction to obtain a crude product; the waste polyester comprises at least one of polyethylene terephthalate, polytrimethylene terephthalate, polyethylene isophthalate, polytrimethylene isophthalate, polyethylene succinate, polyethylene adipate, polyethylene suberate and polyethylene sebacate; the crude product is hydrolyzed in an alkali solution, extracted, and the organic phase is taken to obtain hydroxyethyl imidazole salt substances and / or hydroxypropyl imidazole salt substances; the water phase is acidified and precipitated, and solid-liquid separation is performed to obtain organic diacid. The application can utilize a large amount of recycled polyester materials, one-pot method is used to recycle dibasic carboxylic acid and imidazole salt value-added chemicals, and the recycled dibasic carboxylic acid and imidazole salt value-added chemicals can be applied to the polyester industry again.

The application provides a process method for chemically recycling 1,3-propanediol and co-producing aromatic chemicals, which uses polytrimethylene terephthalate (PTT) waste or particles (or leftover materials and the like) and ammonia water as raw materials, and obtains 1,3-propanediol, terephthalamide, terephthalic acid, terephthalonitrile and terephthalonitrile through unit operation steps such as ammonolysis depolymerization, acidification, extraction, reduced pressure distillation, catalytic dehydration and catalytic hydrogenation. The technical process realizes the resource utilization of waste polyester plastics, and co-produces aromatic amides and nitrile high-value chemicals.

The invention discloses a production method of a high-composite-strength BOPA film. The BOPA film comprises a surface layer, a middle layer and an inner layer, and the surface layer is composed of PA6, melamine cyanurate, magnesium silicate, polytrimethylene terephthalate, POE-g-MAH and an antioxidant; the middle layer is composed of PA10 and PA12, multi-walled carbon nanotubes, pentadecyl phenol and surface modified cuprous oxide; the inner layer is prepared from PA6, glass fibers, phenolic resin, hollow glass beads, halloysite, an antioxidant and silicone. The BOPA film disclosed by the invention has relatively good composite strength.

The invention relates to the technical field of macromolecules, in particular to modified polytrimethylene terephthalate and a preparation method thereof. The modified polytrimethylene terephthalate comprises amination modified ZIF-8 and a polymer with a structure as shown in a formula I-1, wherein the amination modified ZIF-8 is prepared by using zinc nitrate hexahydrate, 2-aminobenzimidazole, 2-methylimidazole and sodium formate as raw materials.

The present application relates to the technical field of elastic fiber, in particular to an easy-to-dye composite elastic fiber and a preparation method thereof. The composite elastic fiber is prepared by melt spinning of thermoplastic polyester chips and modified PBT chips. The thermoplastic polyester chips comprise the following raw materials in parts by weight: polytrimethylene terephthalate 65-80 parts, polyamide copolymer 10-25 parts, compatibilizer 2-8 parts, lubricant 0.5-3 parts, and antioxidant 0.1-1 part. The modified PBT chips have good mechanical properties, high heat resistance, easy dyeing and easy processing, by introducing 1,4-cyclohexane dimethanol and sulfonic acid groups into the PBT molecular chain. The easy-to-dye composite elastic fiber prepared by the compounding of modified PBT and thermoplastic polyester for spinning processing has the characteristics of high comprehensive mechanical properties, good heat resistance and excellent dyeing performance.

The present invention includes a fabric and a yarn, the yarn including a polyester bi-component multifilament yarn. The bi-component polyester yarn is made of polyethylene terephthalate and polytrimethylene terephthalate in a parallel or eccentric skin-core configuration. The yarns have improved bulkiness and provide a more desirable hand feel in fabrics compared to conventional polyester bicomponent yarns.

The invention provides an ecological texture comfortable type multifunctional elastic composite yarn and a manufacturing method thereof, the ecological texture comfortable type multifunctional elastic composite yarn comprises a core layer, the core layer is an elastic core yarn formed by blending low-viscosity PET and high-shrinkage PET according to the mass ratio of (5-7): (3-5), the intrinsic viscosity of the low-viscosity PET at 25 DEG C is 0.47-0.65 dL / g, and the boiling water shrinkage rate of the high-shrinkage PET is larger than or equal to 20%; the outer side of the core layer is coated with the middle layer, and the middle layer is formed by blending modified bio-based polytrimethylene terephthalate fibers and regenerated polyester fibers according to the mass ratio of (3-5): (5-7); the outer layer wraps the outer side of the middle layer, and the outer layer is formed by blending modified China hemp fibers and lyocell fibers according to the mass ratio of (2-4): (6-8); the synergistic improvement of spandex replacement, ecological environmental protection, comfortable texture and multi-function integration is achieved, meanwhile, the production process is optimized, and energy consumption and pollutant emission are reduced.