65 results about "Polyfuran" patented technology

The invention discloses a bio-based PEF fiber with a cool feeling and a quick-drying function as well as a preparation method and application thereof, and belongs to the field of textile functional materials. The bio-based PEF fiber with the cool feeling and the quick-drying function is prepared by spinning bio-based poly (ethylene 2, 5-furandicarboxylate) with an epoxy group and a sulfonic acid group; the bio-based PEF fiber has a profiled fiber cross section and / or a hollow structure. The bio-based poly (ethylene 2, 5-furandicarboxylate) with an epoxy group and a sulfonic acid group is adopted, the hydrophilicity is improved, and the PEF fiber with the special-shaped section and / or the hollow structure is constructed to achieve the cool feeling, so that the moisture absorption and quick drying effects of the fiber are improved. The heat dissipation effect of the fiber can be improved, the moisture absorption and quick-drying effect of the fiber can be improved, and therefore dual improvement of the cool feeling and the quick-drying function is achieved. When the PEF fiber with the cool feeling and the quick-drying function is prepared, the mechanical property, the biodegradability and the like can be considered.

The invention provides a synthesis method of bio-based poly (ethylene 2, 5-furandicarboxylate) (poly (ethylene 2, 5-furandicarboxylate) for short) and performance application of the bio-based poly (ethylene 2, 5-furandicarboxylate). According to the method, 2, 5-furandicarboxylic acid (FDCA) derived from renewable resources and ethylene glycol (EG) are used as main raw materials, and the high-molecular-weight PEF is prepared through microwave-assisted esterification-polycondensation reaction under the action of a metal catalyst. The prepared PEF has excellent thermal mechanical property and gas barrier property, the glass transition temperature is about 58.6 DEG C, the melting temperature is about 187.4 DEG C, and the thermal decomposition 18% weight loss temperature exceeds 400 DEG C. The PEF material can be biologically degraded under the industrial composting condition, and the degradation speed is higher compared with that of traditional petroleum-based PET polyester. The PEF provided by the invention is suitable for the fields of food packaging films, beverage bottles and fiber materials, has the advantages of biodegradability, heat resistance stability and high barrier property, can partially replace polyethylene glycol terephthalate (PET) and other petrochemical plastics, and meets the requirements of sustainable development.

The invention relates to a method for preparing high-molecular-weight polyethylene furandicarboxylate by a one-step method, and belongs to the technical field of bio-based polyester materials. The method comprises the following steps: weighing raw materials including 2, 5-furandicarboxylic acid, ethylene glycol, an end group regulator, a protective agent, a decarboxylation inhibitor and a catalyst, mixing and adding into a reaction container, introducing nitrogen, maintaining the pressure of the nitrogen in the reaction container to be 50-150 kPa, carrying out esterification reaction, heating and vacuumizing until the pressure is less than or equal to 50 Pa after the esterification reaction is completed, and carrying out polycondensation reaction to obtain the 2, 5-furandicarboxylic acid. And carrying out extrusion and drying so as to obtain the high-molecular-weight polyethylene furandicarboxylate, wherein the high-molecular-weight polyethylene furandicarboxylate is obtained. According to the method, the FDCA conversion rate is larger than or equal to 98%, the number-average molecular weight of the obtained product is larger than or equal to 32 kg / mol, no heavy metal residues exist, and the method is suitable for large-scale production of high-end bio-based packaging materials.

The invention particularly relates to a glass fiber reinforced composite plastic and a preparation method thereof, and the composite plastic comprises the following raw materials in parts by weight: 55-65 parts of PBT, 30-40 parts of PC, 25-35 parts of glass fiber, 2-4 parts of poly (2, 2, 6-trimethyl-1, 3-pentanediol monoisobutyrate), 1-3 parts of a compatilizer, 1- The material is prepared from the following components in parts by weight: 10-15 parts of ethylene glycol furandicarboxylate, 5-10 parts of a compatilizer, 4-10 parts of maleic anhydride grafted polyolefin elastomer, 3-8 parts of a silane coupling agent, 2-6 parts of an antioxidant, 1-5 parts of a lubricant and 5-12 parts of a synergistic aid. The PBT, the PC and the poly (ethylene 2, 5-furandicarboxylate) are compounded to serve as matrix plastic, the glass fibers are added for reinforcement, and the matrix plastic and the compatilizer, the maleic anhydride grafted polyolefin elastomer, the synergistic additive and other raw materials have a synergistic effect, so that the prepared glass fiber reinforced composite plastic has good mechanical properties, chemical resistance and wear resistance, and the service life of the plastic is prolonged. The preparation method is stable in process, convenient to control and high in production efficiency.

An environmentally friendly fresh-keeping can and a method of manufacturing the same are provided. The environmentally friendly fresh-keeping can includes a housing, an inner container, an easy-open lid, and a bottom cover. The housing, the inner container, the easy-open lid, and the bottom cover are respectively made of a spiral paper tube, bio-based polyethylene 2,5-furanoate (PEF), aluminum, and biodegradable plastic. The inner container is mounted into the housing through an inner opening on a top of the inner container. Then the easy-open lid and the bottom cover are respectively used to seal the inner opening of the inner container and a bottom opening of the housing. The respective components are made of biodegradable, recyclable and reusable materials and able to be disassembled for recycling and reuse. Thereby the can meets requirements for environmental protection and recycling.

The present invention discloses a furandicarboxylate bio-based crosslinkable elastomer and a preparation method thereof. The preparation method comprises: uniformly mixing furandicarboxylate or furandicarboxylate, a linear saturated dibasic acid or linear saturated dibasic acid ester, a linear unsaturated dibasic acid or linear unsaturated dibasic acid ester, and a diol; adding a catalyst and an antioxidant; heating the mixture to above 150°C; gradually heating the mixture under an inert atmosphere; and reacting the mixture at 150-190°C for 3-7 hours to obtain an intermediate product; stirring the intermediate product for a polycondensation reaction at a vacuum degree of 30-400 Pa and a temperature of 200-260°C for 3-8 hours to obtain a crude product; and dissolving, washing, and drying the crude product to obtain a finished product. The polyfurandicarboxylate bio-based elastomer prepared by the present invention has good mechanical properties and processing properties; and the composite material after crosslinking and filler reinforcement can greatly improve tensile strength, good resilience, low permanent deformation, and high tensile strength.

The invention relates to the field of textile fabrics, and discloses a polylactic acid fabric and a preparation method thereof. The polylactic acid fabric is prepared by weaving polylactic acid fibers, the polylactic acid fibers are prepared by melt spinning of a polylactic acid material body, and the polylactic acid material body is prepared from the following raw materials in parts by weight: 100-120 parts of polylactic acid resin, 12-20 parts of a heat-resistant moisture absorbent, 6-10 parts of a toughening agent and 0.2-0.4 part of an antioxidant; the heat-resistant moisture absorbent is prepared from lignin fibers, poly (ethylene 2, 5-furandicarboxylate), poly (butylene adipate-co-terephthalate) and a dispersing agent. The preparation method comprises the following steps of melt spinning, rib knitting, heat setting, dyeing and aftertreatment. The polylactic acid fabric prepared by the invention has better heat resistance, moisture absorption and shrink deformation resistance, and is suitable for scenes with higher requirements on heat resistance and moisture absorption, such as underwear or infant clothes.

The invention relates to polyfurandicarboxylic acid glycol ester resin as well as a preparation method and application thereof, and belongs to the technical field of organic high-molecular compounds. The preparation method of the polyethylene furandicarboxylate resin provided by the invention comprises the following steps: S1, mixing 2, 5-furandicarboxylic acid, ethylene glycol, a catalyst and an inhibitor, and carrying out esterification reaction to obtain an ester; and S2, carrying out low-pressure condensation polymerization on the ester obtained in the step S1 to obtain the polyethylene furandicarboxylate resin, the inhibitor is ethylene carbonate; according to the GB / T14571.2-2018 standard, based on the chromatographic purity of the ethylene glycol, the chromatographic peak area of the inhibitor in the mixture of the ethylene glycol and the inhibitor is 0.05%-0.6% of the sum of the chromatographic peak area of the inhibitor and the chromatographic peak area of the ethylene glycol. The preparation method can effectively reduce the content of acetaldehyde in the polyethylene furandicarboxylate resin.

The present invention provides a novel means for degrading PEF. Provided is a method for degrading polyethylene furanoate that includes causing an enzyme comprising a polypeptide which has an amino acid sequence having at least 90% identity with the amino acid sequence of SEQ ID NO: 1 and has one or more amino acid substitutions selected from the group consisting of H129W, F208S, A172C, and A209C to act on polyethylene furanoate.

The application discloses a colored poly(ethylene-2,5-furandicarboxylate) fiber, which comprises 2,5-furandicarboxylic acid, ethylene glycol, a catalyst, a crosslinking agent and a pigment, and the pigment is a bio-based dye or a colorant. The application further discloses a preparation method of the colored poly(ethylene-2,5-furandicarboxylate) fiber. Bio-based dyes treated by ultrasonic waves are used to efficiently dye poly(ethylene-2,5-furandicarboxylate) fibers obtained by polymerization and spinning of poly(2,5-furandicarboxylic acid) and ethylene glycol. In the dyeing process of the poly(ethylene-2,5-furandicarboxylate) fiber, dyeing carriers or dyeing auxiliaries are added, so that the affinity between the bio-based dyes and the fiber can be improved, the dyeing performance is further improved, and a pre-mordanting treatment is performed through metal ions, so that the dyes and the metal ions form a coordination, the energy level interval of an electron transition of a dye color system is changed, and then the color and the dyeing fastness of the dyes are effectively changed.

The invention discloses a bio-based low-carbon environment-friendly functional furan polyester fiber and a preparation method thereof. The invention belongs to the technical field of macromolecules, and particularly relates to a polyfurandicarboxylic acid cyclohexanedimethanol-ethylene glycol copolyester fiber. The invention also provides a preparation method of the bio-based furan copolyester, and the bio-based furan copolyester obtained according to the preparation method provided by the invention has higher crystallinity and crystallization rate, excellent fiber mechanical properties and remarkable antibacterial property, and is a sustainable environment-friendly fiber with good comprehensive properties. The bio-based furan copolyester fiber and the like can be widely applied to the related fields of conventional clothes, home textiles and the like.

The application relates to the field of protective films, and discloses a printed stretch film and a preparation method thereof. The printed stretch film is prepared from the following raw materials in parts by weight: 95-105 parts of polyethylene resin, 5-10 parts of nano-barium sulfate, 15-20 parts of tackifying masterbatch, 4-8 parts of stabilizer, 3-5 parts of lubricant and 2-4 parts of antioxidant; the tackifying masterbatch is composed of poly(ethylene-2,5-furandicarboxylate), dibutyl itaconate, polyhydroxyalkanoate and cyclohexane-1,2-dicarboxylic acid diglycidyl ester; the printed stretch film prepared by the application has good printability, scratch resistance, elongation at break and resistance to shrinkage and deformation, and has good applicability in protective films requiring printing ink; when the printed stretch film is used in packaging cartons, PET film and other packaging materials requiring color printing, the printed stretch film has good protective property and scratch resistance.

A method of producing an oligofuran moiety-containing polycarbosilane, the method including a polymerization step of reacting a dihydrosilyloligofuran compound with a diene compound and / or diyne compound in the presence of ahydrosilylation catalyst in which method the dihydrosilyloligofuran compound being a compound having a 2- to 256-mer of a furan ring and a hydrosilyl group at the α-position of each of both terminal furan rings of the 2- to 256-mer of the furan ring.

The invention relates to the technical field of biomass-based polyfuran polymer materials, in particular to a flexibility-adjustable biomass-based polyfuran polymer material and a preparation method thereof. A molecular structure of a conventional bio-based fat chain high-molecular polymer lacks a rigid structure, so that the heat resistance and the mechanical property are obviously lower than those of a petroleum-based high-molecular material. Aiming at the technical problems, the invention provides the flexibility-adjustable biomass-based polyfuran high-molecular material which is a product obtained by carrying out aldol condensation reaction on furan dicarboxaldehyde and diketone or polyketone under the action of a catalyst, and a molecular skeleton of the flexibility-adjustable biomass-based polyfuran high-molecular material consists of aromatic rings and carbon-carbon chains and does not contain heteroatoms; the biomass-based polyfuran polymer material is similar to a molecular skeleton of phenolic resin and has a lower carbon footprint, an aromatic furan ring in a molecular structure is connected with a double bond, and the flexibility of the biomass-based polyfuran polymer material can be adjusted by changing the type of diketone or polyketone.

Low-density, thermoplastic foams comprising: (a) thermoplastic polymer cells comprising cell walls comprising polyethylene furanoate, wherein at least about 50% by volume of the cells are closed cells

The invention provides a preparation method of low-color-value polyethylene furandicarboxylate. The germanium-titanium composite catalyst is used as the catalyst for preparing the polyethylene furandicarboxylate, so that the problems of slow reaction and dark color of the polyethylene furandicarboxylate are solved. According to the preparation method of the polyethylene furandicarboxylate, all the raw materials are only added before the reaction, additives or other catalysts do not need to be added in the middle process, the process is very simple, the process is environment-friendly, and industrialization is facilitated.

The present invention provides a novel means for efficiently degrading PEF. Provided is a method for degrading polyethylene furanoate and polyethylene terephthalate that includes causing an enzyme comprising a polypeptide that has an amino acid sequence having at least 90% identity with the amino acid sequence of SEQ ID NO: 1 to act on polyethylene furanoate and polyethylene terephthalate in a buffer solution having a pH of 8.5 to 11.

This application discloses a method for synthesizing polyethylene (2,5-furandicarboxylate), comprising the following steps: mixing 2,5-furandicarboxylic acid and ethylene glycol in a molar ratio of 1:2, adding zinc acetate as an esterification catalyst, and carrying out an esterification reaction at 195°C and a pressure not exceeding 0.3 MPa until the water content reaches 98% of the theoretical amount; adding antimony trioxide as a polymerization catalyst and triphenyl phosphate as a stabilizer to the esterification product, and reacting for 1 hour at a low vacuum of 800-1000 Pa and a temperature of 215°C to carry out pre-condensation; and carrying out a condensation reaction of the pre-condensation product at a high vacuum of less than 200 Pa and a temperature of 235°C until the torque reaches 4.2 A / 65 rpm to obtain polyethylene (2,5-furandicarboxylate). By reducing the amount of antimony trioxide to 0.045% and triphenyl phosphate to 0.1%, the amount of stabilizer was reduced, releasing catalyst activity. This shortened the polymerization time from 300 min to 230 min, reduced the color value b from 12-13 to 10, and improved the intrinsic viscosity to 0.507~0.517 dL / g. This achieved a reduction in production costs and heavy metal residues while improving the product's color.

The present invention relates to a spun yarn comprising polyethylene 2,5-furandicarboxylate (PEF) filaments, which exhibits a breaking strength at least equal to 4 cN / dtex and a breaking energy at least equal to 40 cN / dtex, the breaking energy being defined as the product of the breaking strength (cN / dtex) and the breaking elongation (%), the breaking strength and breaking elongation being measured according to ASTM standard D885-03, and to a method for preparing the same.

The invention relates to the technical field of hot melt adhesives, and discloses a hot melt adhesive composition and a preparation method thereof. The hot melt adhesive composition is prepared from polyethylene furandicarboxylate-co-polylactic acid, a terpene-isoprene copolymer, a phosphite ester-hindered phenol compound antioxidant, triglycidyl isocyanurate, elastomer modified polycaprolactone, a hydroxyapatite nanorod, a lignin-graphene compound, dopamine modified nano cellulose, an antioxidant, a coupling agent, a coupling agent, a coupling agent and a lubricant. The nano-montmorillonite modified silicone oil is composed of a nano-zinc oxide-montmorillonite compound and polyether modified silicone oil, the peel strength is up to 9.2 N / mm, the elongation at break is 520%, the biodegradation rate is 93%, the ultraviolet aging resistance strength retention rate is 95%, and the cytotoxicity is level 1. The problems of insufficient mechanical property, poor environmental protection property and limited application scene are solved. The method can be widely adapted to the fields of electronic packaging, medical dressings, environment-friendly packaging and the like, and has technical advantages and environment-friendly value.

The invention belongs to the technical field of high polymer materials, and particularly relates to a modified polyethylene furandicarboxylate material as well as a preparation method and application thereof. The modified polyethylene furandicarboxylate material comprises a PEF main chain and fused ring end groups chemically grafted to the end part of the PEF main chain, and the fused ring end groups are stacked through pi-pi, so that a three-dimensional physical cross-linked network node is formed. According to the invention, through combination of a terminal functionalization strategy and a pi-pi stacking effect and a three-dimensional physical cross-linked network, synergistic enhancement of tensile strength and elongation at break of the polyester material is successfully realized, and excellent processability and oxygen barrier property are maintained at the same time. In a preferable scheme, the impact toughness of the material can be improved by 120-180% at most, meanwhile, the crystallization rate is improved by 3-5 times through a plasticizing effect, and the oxygen barrier property retention rate is 7 times or above that of PEF. The problems of narrow processing temperature window and poor melt strength of bio-based polyester PEF are effectively solved, and a new way is provided for developing high-performance sustainable packaging materials.

The invention belongs to the technical field of foaming materials, and relates to a super-hydrophobic ultralow-dielectric microporous PEF / PTEF foaming material as well as a preparation method and application thereof. The invention discloses a preparation method of a super-hydrophobic ultra-low dielectric microporous PEF / PTEF foam material, which comprises the following steps: (1) carrying out melt blending on 100 parts of PEF, 0.1-3 parts of PTEF and 0-0.1 part of an auxiliary agent at 180-240 DEG C to obtain a PEF / PTFE composite material; (2) carrying out hot press molding on the PEF / PTFE composite material in the step (1) to obtain a PEF / PTFE sheet; and (3) carrying out supercritical carbon dioxide foaming on the PEF / PTFE sheet in the step (2), saturating for 1-30 minutes, cooling to 70-95 DEG C, and rapidly decompressing and foaming within 1-5 seconds to obtain the super-hydrophobic ultra-low dielectric microporous PEF / PTEF foaming material. The super-hydrophobic and ultra-low dielectric microporous PEF / PTEF foaming material disclosed by the invention has relatively good super-hydrophobic performance and low dielectric performance.

Low-density, thermoplastic foams comprising: (a) thermoplastic polymer cells comprising cell walls comprising polyethylene furanoate, wherein at least about 50% by volume of the cells are closed cells

The invention provides a far-infrared heating fiber based on bio-based polyester and a preparation method of the far-infrared heating fiber, and relates to the technical field of fibers. According to the preparation method, azido polycaprolactone is prepared, azido groups and the side wall of a far-infrared material carbon nanotube are subjected to a cyclization addition reaction, the polycaprolactone is modified on the surface of the carbon nanotube, the dispersity of the carbon nanotube in a matrix is improved, and then terminal hydroxyl groups of the polycaprolactone and hydrophilic chain segment polyethylene glycol are used for participating in bio-based poly (2, 2, 6-trimethyl-1, 3-pentanediol). The preparation method comprises the following steps: carrying out polycondensation reaction on a carbon nanotube and 2, 5-furandicarboxylic acid copolyester to finally prepare a carbon nanotube / copolyester composite material with good hydrophilic performance and excellent antistatic performance, introducing the composite material into polyester chips for melt spinning, and improving the moisture absorption and antistatic performance of polyester fibers by utilizing the synergistic effect between hydrophilic chain segments in the copolyester and carbon nanotubes. Meanwhile, the fiber is endowed with a far infrared heating function.

The invention relates to the technical field of bio-based polyester synthesis, in particular to a composite catalyst which is synthesized by MgO and Zn3 (C6H5O7) 2 through a hydrothermal process, and the mass ratio of MgO to Zn3 (C6H5O7) 2 is 1: (1-2). The invention also discloses a method for preparing polyethylene furandicarboxylate by using the composite catalyst, and the method comprises the following steps: putting the composite catalyst, EG and FDCA into a flask according to the proportion, and carrying out esterification-pre-polycondensation-final polycondensation reaction to prepare PEF. According to the composite catalyst disclosed by the invention, the problem that the biocompatibility of the product is reduced due to catalyst residues can be solved while the viscosity of the product is ensured. By utilizing the method, the PEF with the intrinsic viscosity of 0.9-9dL / g, the melt index of 3-10g / 10min and the blood compatibility of less than 5% can be prepared within 2-6h, the problems of tedious post-treatment steps and high cost existing in the application of a traditional catalyst for preparing the PEF in the field of biomedical materials can be avoided, and the method has important significance on high-valued application of the PEF and has a large-scale production prospect.

The application discloses a one-step method for preparing high-molecular-weight polyethylene furandicarboxylate, and belongs to the technical field of bio-based polyester materials.The method comprises the following steps: weighing raw materials, i.e., 2,5-furandicarboxylic acid, ethylene glycol, an end-group regulator, a protective agent, a decarboxylation inhibitor and a catalyst, mixing and adding the raw materials into a reaction container, introducing nitrogen, maintaining the nitrogen pressure in the reaction container at 50-150 kPa, performing esterification, increasing the temperature after the esterification is completed, and performing vacuumization to less than or equal to 50 Pa to perform polycondensation, obtaining a high-molecular-weight polyethylene furandicarboxylate melt, extruding, drying and obtaining the high-molecular-weight polyethylene furandicarboxylate.The conversion rate of FDCA is greater than or equal to 98%, the number-average molecular weight of the obtained product is greater than or equal to 32 kg / mol, there is no heavy metal residue, and the method is suitable for large-scale production of high-end bio-based packaging materials.

The invention relates to the technical field of high polymer materials, in particular to a full-bio-based polyether ester block copolymer as well as a preparation method and application thereof. The full bio-based polyether ester block copolymer is a poly (2, 5-furandicarboxylic acid propylene glycol ester)-b-poly (trimethylene ether glycol) block copolymer, and is prepared from bio-based 2, 5-furandicarboxylic acid, bio-based 1, 3-propylene glycol and bio-based poly (trimethylene ether glycol) as raw materials. The FDCA, PDO and PO3G raw materials adopted by the invention are all derived from biomass, the full-bio-based polyether ester elastomer is successfully prepared, and the requirements of green chemistry and sustainable development are met. Besides, by introducing a flexible PO3G chain segment into a PTF molecular chain, the brittleness problem of a pure PTF material is effectively overcome, the copolymer shows typical elastomer behavior, the highest elongation at break can reach 264.31%, good combination of rigidity and toughness is realized, and the application prospect is wide.

This invention relates to the field of bio-based injection molding technology, specifically to a bio-based injection molding compound and its production process, comprising the following raw materials in parts by weight: 80-95 parts matrix resin, 4-6 parts modified reinforcing components, 2-3 parts bio-based crosslinking components, and 2.5 parts bio-based functional additives. The matrix resin is based on polylactic acid (PLA), compounded with polybutylene furanate and polyhydroxyalkanoates to form a ternary bio-based polyester system. This system compensates for the brittleness of PLA at the matrix level, improving elongation at break. The addition of modified reinforcing components enhances the material's rigidity and heat resistance through nanoscale reinforcement. Furthermore, the ionic liquid modification improves the compatibility with the matrix interface, preventing the mechanical properties from decreasing due to reinforcing phase agglomeration. Nanocellulose replaces traditional glass fiber reinforcement, avoiding wear on the screw and mold, and extending equipment lifespan.

Barrier layer (101) against migration of a substance, wherein the barrier layer (101) is arranged in a cable (121, 123) and / or around an electrical conductor (105, 107, 109, 111), and the barrier layer (101) comprises or consists of polyethylene furanoate, characterized in that the barrier layer (101) is manufactured by extrusion together with a sheath layer (103) in one operation, such that the barrier layer (101) is permanently bonded to the sheath layer (103).