103 results about "Polyether block amide" patented technology

The invention relates to the field of automobile part manufacturing, and particularly discloses a barrier layer direct bonding type TPE material for an automobile air conditioner pipeline system and a preparation method and application of the barrier layer direct bonding type TPE material. The TPE material is prepared from the following raw materials: a thermoplastic elastomer TPE, PA, EVOH, polyether block amide, a glycidyl methacrylate grafted olefin copolymer elastomer, a toughening compatilizer, composite modified montmorillonite, a cold-resistant additive, an antioxidant and paraffin oil. Wherein the composite silane coupling agent, lauric acid and N, N '-carbonyldiimidazole are adopted to modify the nano-montmorillonite, so that the dispersity of nano-montmorillonite particles is improved, the formation of aggregates is effectively reduced, and the mechanical property of the material is enhanced; the polyether block amide, the glycidyl methacrylate grafted olefin copolymer elastomer and the toughening compatilizer have a synergistic effect, so that good adhesiveness of the TPE material and the barrier layer is realized.

The invention belongs to the field of novel polyamide composite fiber materials, and particularly discloses a high-toughness polyamide fiber composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 55-75 parts of long-chain polyamide PA610 resin, 10-25 parts of ultra-high molecular weight polyethylene fiber, 8-18 parts of polyether block amide elastomer, 1.5-4 parts of a compound nucleating agent, 0.8-2 parts of a titanate coupling agent and 0.3-1 part of a composite antioxidant. The preparation method is characterized by comprising the following steps: firstly, carrying out surface pretreatment on the ultra-high molecular weight polyethylene fiber by adopting a low-temperature plasma technology so as to improve the interfacial compatibility of the ultra-high molecular weight polyethylene fiber and a resin matrix; and then carrying out melt blending granulation on the pretreated fiber and other raw materials through a twin-screw extruder, wherein the fiber is added from a side feeding port to avoid excessive shearing and breaking. The obtained product has ultrahigh impact toughness, excellent rigidity, excellent low-temperature toughness and heat resistance, and is especially suitable for the fields of manufacturing automobile parts, sports protection equipment and the like with extremely high requirements on toughness and durability.

The invention discloses a bio-based nylon 12 elastomer prepared by a one-step method and a preparation method and application thereof, and belongs to the technical field of polyamide materials, the method comprises the following steps: (1) material preparation: mixing, heating and uniformly stirring bio-based 12-amino dodecanoic acid, polyether amine, a reaction aid and water in a material preparation tank to form a mixture; (2) feeding: pressing the mixture into a polymerization kettle through nitrogen pressurization; and (3) polymerizing. By optimizing the raw material combination and the polymerization process path, the one-step method (namely, in the same polymerization kettle) is realized to complete the polymerization reaction taking the bio-based 12-amino dodecanoic acid monomer as the main component, and the polyether block amide type nylon 12 elastomer is constructed, so that the elongation at break and the rebound resilience are improved, the stable polymerization process and the controllable product quality are realized, and the production cost is reduced. And the polyurethane elastomer has good elasticity and machinability, and is suitable for the fields of soles, sealing strips, soft devices and the like.

The invention relates to the technical field of medical instruments, and discloses a high-pressure-resistant injection type central venous catheter and a preparation method thereof.The high-pressure-resistant injection type central venous catheter is characterized in that a polyurethane elastomer is used as a main body material, and the polyurethane elastomer has high tearing strength and flexibility; the aramid fiber and carbon nanotube composite material is used as a reinforcing layer and is used for improving the pressure resistance and fatigue resistance of the catheter; according to the catheter, polyether block amide is used as an inner layer material, the polyether block amide has excellent elastic restoring force and biocompatibility, and the outer layer material of the catheter is polyether-ether-ketone, so that the temperature resistance and chemical resistance of the catheter are enhanced. By adopting the design of the multi-layer composite material, the high-pressure resistance and the tear resistance of the conduit are remarkably improved, the rigidity problem caused by increase of the wall thickness of a traditional conduit is solved, the sealing performance and the pressure resistance are improved through the design of the conical sealing structure and the metal reinforcing ring of the connector part, and the leakage risk is avoided.

The invention discloses a preparation method of a new energy battery pack cover plate flame-retardant PP material, and relates to the technical field of polymer flame-retardant materials. The preparation method comprises the following steps: sequentially adding phosphate esterified polypropylene, a maleic anhydride grafted polyolefin elastomer, polyether block amide, modified nano clay, a B-P-triazinyl charring agent, a carbodiimide type anti-hydrolysis agent, a hindered phenol antioxidant, short carbon fibers, polytetrafluoroethylene micro powder and modified hollow glass beads into a mixing mill; and adding the obtained premix into a twin-screw extruder, extruding, pelletizing, and carrying out injection molding to obtain the flame-retardant PP material for the cover plate of the new energy battery pack. The prepared new energy battery pack cover plate flame-retardant PP material has excellent mechanical performance, flame retardance, thermal stability, dimensional stability and antistatic performance, is light in weight, and has wide application prospects in the fields of new energy automobiles, energy storage systems, consumer electronics, aerospace and industrial equipment.

The invention discloses a TPE (thermoplastic elastomer) material as well as a preparation method and application thereof, and belongs to the technical field of thermoplastic elastomer polymer materials. According to the TPE material, polyether block amide is used as an antistatic agent; the nylon, the maleic anhydride grafted polypropylene, the maleic anhydride grafted ethylene propylene diene monomer, the maleic anhydride grafted hydrogenated styrene elastomer and the polyacrylamide are added, so that the strength of the material and the bonding performance with the PA are improved. The TPE material has good nylon encapsulation performance, antistatic performance and mechanical performance, and is suitable for being applied to encapsulation of battery pack shells, encapsulation of explosion-proof tool shells and encapsulation of vehicle parts.

The present application relates to a polyether block amide-based composition and a method for producing a sole from the composition. The composition comprises: 90-95 wt% of component A: polyether block amide resin; and 5-10 wt% of component B: a styrene copolymer, stearic acid, zinc stearate, and calcium carbonate. The present invention successfully provides a composition based on a thermoplastic elastomer material. By adding a small amount of component B, the composition is prepared into plastic granules. The plastic granules can withstand high temperature and high pressure, so that pores are more uniformly distributed in a created polymer material to achieve better foamability and elasticity, so that the composition is highly suitable for sole production. The sole exhibits comfortable feeling while ensuring inherent properties, such as skid resistance and wear resistance of rubber outsoles. The maximum elasticity of a traditional foaming process can only reach 60%, whereas the present application provides a modified process in which a material is foamed and dried, creating higher elasticity for the sole, so that the maximum elasticity can reach 85%.

The invention relates mainly to a polymer composition comprising: (a) 55% to 99%, preferably 60% to 95%, advantageously 65% to 90%, and in particular 70% to 85% by weight of polyether block amide (PEBA) having a ratio of the number-average molar mass of the polyamide blocks to that of the polyether blocks of 1.0 or less; (b) 1% to 45% by weight of a modifier selected from among: i. a thermoplastic elastomer in the form of a block copolymer with a ratio D of the number-average molar mass of the rigid blocks to that of the soft blocks of less than 0.8; ii. a crude or crosslinked rubber; and iii. combinations thereof; (c) 0% to 5% by weight of additives; and (d) 0% to 5% by weight of fillers, the sum of the percentages of components (a) to (d) adding up to 100%, and wherein the composition comprises less than 4% by weight of carbon black.

The invention belongs to the technical field of thermoplastic elastomer materials, and particularly relates to a PP-bonded antistatic TPE material as well as a preparation method and application thereof. The ethylene-propylene copolymer elastomer has good compatibility with PP and hydrogenated styrene elastomers, and the bonding capacity of the material and PP can be remarkably improved; pOE has the characteristics of less crystallization and slow cooling, and can not only increase the toughness of the material, but also prolong the temperature holding time of the material during injection molding after being added into the material, so that the bonding capacity of the obtained TPE and PP is improved; the polyether block amide can form an ion channel in the TPE material, so that the antistatic capacity of the material is effectively improved, and the bonding capacity of PP is basically not reduced. Through the synergistic effect of the components, the TPE material which is good in PP encapsulation property, high in antistatic property and excellent in mechanical property is obtained.

The invention discloses a heat-insulating and ultraviolet-proof protective film and a preparation method thereof, the protective film comprises a heat-insulating and ultraviolet-proof layer, and the heat-insulating and ultraviolet-proof layer comprises the following components: 15-30 parts of fluorinated polyether acrylate; 5 to 15 parts of polyether block amide elastomer; 0.1 to 2 parts of reduced graphene oxide; 0.5 to 3 parts of perfluorodecyl triethoxy silane; 1-8 parts of hydroxylated zinc oxide quantum dots; 2 to 10 parts of a benzotriazole derivative; 0.5 to 5 parts of nano cellulose; 0.1-1 part of a rare earth beta nucleating agent; 20 to 40 parts of a waterborne polyurethane dispersion; 0.5 to 3 parts of a photoinitiator; 1-5 parts of a cross-linking agent; and 50-150 parts of an organic solvent. According to the protective film, through the cooperation of the fluorinated polyether acrylate and the polyether block amide elastomer, the surface energy is relatively low and the stain resistance is excellent while high light transmission is maintained, and the graphene and the quantum dots form a three-dimensional heat conduction-scattering network, so that the infrared radiation reflectivity is improved.

A non-crosslinked polymeric heat shrink tubing including poly(ether-block-amide) (PEBA) and methods for making such non-crosslinked polymeric heat shrink tubing is provided. The non-crosslinked PEBA heat shrink tubing disclosed herein finds application, e.g., as a processing aid and final component in the manufacture of catheters and other medical devices.

To provide a novel positive electrode material capable of imparting excellent battery capacity and cycle stability to an all-solid-state lithium ion battery, a positive electrode having the positive electrode material, and a method for manufacturing the same.SOLUTION: The present invention relates to a positive electrode material for an all-solid-state lithium ion battery, the positive electrode material includes at least an electrolyte particle, the electrolyte particle includes a polyether block amide copolymer and a lithium salt. The positive electrode material according to the present invention can provide the all-solid-state lithium ion battery with excellent battery capacity and cycle stability.SELECTED DRAWING: None

A catheter assembly is constructed by reflow bonding an inner liner and an outer layer. The inner liner defines at least one lumen. The inner liner is made of a gamma-irradiated polymeric material that includes a polyether block amide and a gamma radiation activated cross-linking agent.

An example tube includes: an inner layer that allows flow of coolant therethrough, wherein the inner layer is made of a polymer material including polyamide, copolyester, polyvinylidene fluoride, or polyvinylidene difluoride (PVDF), and wherein the inner layer reduces a rate of permeation of coolant; and an outer layer surrounding and bonded to the inner layer, wherein the outer layer is made of copolyester, polyether block amide (PEBA), or thermoplastic polyurethane (TPU).

The present invention provides a multilayer structure intended for transporting, distributing, or storing hydrogen. [Solution] A multilayer structure comprising at least one sealing layer (1) and at least one composite reinforcing layer (2) from the inside out, wherein the innermost composite reinforcing layer is wound around the outermost layer adjacent to the sealing layer, the sealing layer mainly comprises at least one semicrystalline long-chain polyamide thermoplastic polymer P1i (i=1 to n, where n is the number of sealing layers), its Tm is greater than 160°C, and except for one polyether block amide (PEBA), it contains up to 50% by weight of an impact resistance modifier and up to 1.5% by weight of a plasticizer based on the total weight of the composition, and does not contain a nucleating agent, and at least one of the composite reinforcing layers is made of a fibrous material in the form of continuous fibers impregnated with a composition mainly comprising at least one polymer P2j (j=1 to m, where m is the number of reinforcing layers), epoxy resin or epoxy-based resin.

An ultrasound catheter is disclosed. An ultrasound catheter includes a body having a longitudinal axis and a distal end. An array of piezoelectric micromachined ultrasound transducers (pMUTs) is disposed within the distal end of the body. Further, the pMUT array includes a plurality of pMUT array elements arranged on the substrate. Further, an insulating material is disposed at the distal end above the imaging window to provide electrical isolation and transmission of the ultrasound signals. The insulating material corresponds to a polyether block amide (PEBA) or Pebax, or a thermoplastic elastomer (TPE).

The invention discloses an ultrathin polyimide film and a preparation method thereof, and belongs to the technical field of polyimide films. The preparation method comprises the following steps: adding aromatic diamine into a polar organic solvent, and uniformly stirring; in a nitrogen atmosphere, aromatic dianhydride is added into the diamine solution in batches for condensation polymerization, and a polyamide acid resin solution is obtained; carrying out low-temperature plasma modification treatment on polyether block amide, then adding the polyether block amide into a polyamide acid resin solution to be dissolved, and uniformly stirring to obtain a resin solution; adding a metal salt accelerant into the resin solution, and uniformly mixing to obtain a solution A; coating a substrate with the solution A, and performing heat treatment to form a gel film; and carrying out imidization treatment on the gel film on a needle plate to obtain the ultrathin polyimide film. The ultrathin polyimide film has excellent mechanical strength while keeping the ultrathin characteristic, can be widely applied to the field of flexible printed circuit boards, and meets the requirements of miniaturization, light weight and high-density integrated circuits of electronic products.

A molding compound contains polyether block amide (PEBA) based on a subunit 1 made of at least one linear aliphatic diamine having 5 to 15 C atoms and at least one linear aliphatic or aromatic dicarboxylic acid having 6 to 16 C atoms. The PEBA also contains a subunit 2 made of at least one polyether diol having at least 3 C atoms per ether oxygen and primary OH groups at the chain ends. The sum of the C atoms of diamine and dicarboxylic acid is odd and is 19 or 21, and the number-average molar mass of the subunit 2 is 200 to 900 g / mol. A molded object can be created from the molding compound, which can be a molded part, a film, a bristle, a fiber, or a foam.

The invention discloses a radiofrequency ablation catheter and a radiofrequency ablation system.The radiofrequency ablation catheter comprises a center rod, a plurality of supporting rods and an electrode set, the multiple supporting rods are arranged around the center rod and form a cage-shaped structure, and the supporting rods are made of polyether block amide; the electrode group comprises a plurality of electrodes, the plurality of electrodes at least comprise a positive electrode and a negative electrode, each supporting rod is connected with one electrode group, and each electrode in the electrode group is at least partially exposed. The ablation effect of the radiofrequency ablation catheter can be improved through the design of the supporting rod material and the electrode set.

The present invention relates to lubricated thermoplastic compounds and thermoplastic articles made therefrom. The thermoplastic compound comprises: (a) a thermoplastic elastomer selected from the group consisting of thermoplastic polyurethanes, polyether block amides, and combinations thereof; and (b) from 5% to 20% by weight, based on the weight of the compound, of a cross-linked polyvinylpyrrolidone insoluble in water; wherein the article is a medical device; the crosslinked polyvinylpyrrolidone is a powder having a particle size distribution wherein at least 95% of the particles have a particle size of less than 250 microns. The thermoplastic complexes are capable of providing enhanced lubricity in thermoplastic articles without significant reduction in mechanical properties, such as elongation and tensile strength, compared to thermoplastic articles formed from pure thermoplastic elastomers and subjected to the same heat treatment history.

The invention relates to a multilayer hollow body suitable for storing or transporting an aqueous medium, wherein the hollow body has an outer layer containing polyether block amide.

A method of separating a gas mixture, including contacting the gas mixture with a membrane and passing a portion of the gas mixture through the membrane. The portion of the gas mixture that passes through the membrane includes carbon dioxide. The membrane includes a poly (ether-block-amide) (PEBAX) and a covalent organic framework (COF). The COF is an optionally substituted COF-316 and the COF is dispersed in a matrix of the PEBAX to form the membrane. The membrane includes 0.1-5 wt. % of the COF relative to a total weight of the membrane.

A mixture contains at least one amino-regulated polyether block amide (PEBA) and at least one poly(meth)acrylate selected from poly(meth)acrylimides, polyalkyl(meth)acrylates, and mixtures thereof. The mass ratio of PEBA to poly(meth)acrylate is 95:5 to 60:40. The polyalkyl(meth)acrylate contains 80% by weight to 99% by weight of methyl methacrylate (MMA) units and 1% by weight to 20% by weight of C1-C10-alkyl acrylate units, based on the total weight of polyalkyl(meth)acrylate. The mixture can be processed to give foamed mouldings. The mouldings can be used in footwear soles, stud material, insulation or insulating material, damping components, lightweight components, or in a sandwich structure.

A non-crosslinked polymeric heat shrink tubing including poly(ether-block-amide) (PEBA) and methods for making such non-crosslinked polymeric heat shrink tubing is provided. The non- crosslinked PEBA heat shrink tubing disclosed herein finds application, e.g., as a processing aid and final component in the manufacture of catheters and other medical devices. When utilized as an outer jacket of a laser-cut hypotube, the non-crosslinked PEBA heat shrink tubing can advantageously not considerably infiltrate the kerfs of the underlying laser-cut hypotube.

The instant disclosure relates to textile materials having an acid reactive functionalized polymer layer and a non-acid reactive functionalized layer coupled thereto. The acid reactive functionalized polymer layer may include: a polyamide polymer that captures and neutralizes acidic molecules; a hydrophilic polyether block amide copolymer; a maleic anhydride-grafted ethylene copolymer; and a non-halogenated flame retardant. The acid reactive functionalized polymer layer is fire resistant, acid neutralizing, and allows water vapor to transfer therethrough. The non-acid reactive functionalized layer and acid reactive functionalized polymer layer are free of per- and polyfluoroalkyl substances. The polyamide may include Nylon 12, Nylon 6, or Nylon 6,6 functionalized with an amine (e.g., a pyridine derivative and / or a halogenated-dimethylalkylamine) having a nitrogen that captures and neutralizes acidic molecules. The halogenated-dimethylalkylamine may include a general chemical formula of (CH3)2N—R—X, where R is an alkyl containing 1-12 carbon atoms, and X is chlorine or bromine.

The present invention relates to a method for preparing a filtration membrane, comprising the steps of: preparing a first solution by dissolving at least polyamide 6 and a polyether block amide in formic acid wherein the weight ratio of polyamide 6 to polyether block amide is limited to 5: 1; preparing a second solution by adding acetic acid to the first solution wherein the weight ratio of acetic acid to formic acid is limited to 3: 1 and the weight ratio of polyamide 6 to polyether block amide in the second solution is limited to 15 wt%; and electrospinning the second solution, thereby depositing fibers comprising polyamide 6 and polyether block amides on a substrate selected from polyethylene terephthalate. The invention also relates to a filtration membrane prepared by said method.

The invention mainly relates to a footwear cleat, in particular for sports footwear, made of a composition comprising, by weight relative to the total weight of the composition: (a) 50% to 100% of at least one polyether block amide (PEBA) comprising polyamide blocks and polyether blocks, wherein the polyether blocks comprise on average more than 50% of ether units comprising at least 3 carbon atoms per oxygen atom; (b) 0 to 50% of fillers; and (c) 0 to 5% of additives, wherein the composition has a Shore hardness of less than 100A.

The application discloses a nylon composite material, which comprises the following components in parts by weight: aliphatic nylon 60-80 parts; MCA flame retardant 15-35 parts; polyethylene glycol 5-10 parts; and polyether block amide 4-10 parts. The MCA with specific free cyanuric acid content is used in the application, and the MCA generates inert gas due to the high temperature generated by an electric arc in the IPT test, which is beneficial to the rapid outward diffusion of the electric arc. Meanwhile, the polyether block amide as a charge dissipating agent can reduce the electric arc energy and guide the rapid diffusion of the electric arc. Meanwhile, the introduction of the polyethylene glycol can improve the water absorption of the nylon composite material, and the electric arc diffusion is synergized, so that the IPT is further improved. Meanwhile, the nylon composite material has a flame retardancy of 0.8mm V-0.

The invention discloses a nylon composite material which comprises the following components in parts by weight: 60-80 parts of aliphatic nylon; 15 to 35 parts of an MCA flame retardant; 5 to 10 parts of polyethylene glycol; and 4-10 parts of polyether block amide. The MCA with the specific free cyanuric acid content is used for generating inert gas due to the instant high temperature generated by an electric arc in an IPT test, the electric arc can be quickly diffused outwards, meanwhile, polyether block amide serves as a charge dissipation agent, the electric arc energy can be reduced, and the electric arc can be guided to be quickly diffused; meanwhile, polyethylene glycol is introduced, so that the water absorption of the nylon composite material can be improved, electric arc diffusion is coordinated, and the IPT is further improved. Meanwhile, the nylon composite material disclosed by the invention has the flame retardance of 0.8 mm V-0.

This invention discloses a medical catheter with a composite sandwich structure and its preparation method, comprising a catheter base and a sandwich composite structure bonded to the outer surface of the catheter base. The sandwich composite structure, from the inside out, comprises: an inner polyimide layer coated on the outer surface of the catheter base; a polyether block amide intermediate layer coated on the outer surface of the inner polyimide layer; and an outer polyimide layer coated on the outer surface of the polyether block amide intermediate layer. The inner polyimide layer, the polyether block amide intermediate layer, and the outer polyimide layer are formed into an integral structure through a combination of chemical bonding and physical interlocking. This invention achieves multi-layer functional synergy while ensuring strong interlayer bonding, thereby improving the overall performance of the catheter in complex vascular environments. It exhibits excellent pushing force, torsional control, flexibility, and flexural strength, with a smooth inner wall and structural stability.