21 results about "Nylon 12" patented technology

The application discloses a kind of injection molding magnetic ferrite composite material and preparation method thereof, by following weight percentage component composition: modified ferrite magnetic powder 82%-90%, composite binder 7%-15%, coupling agent 0.3%-0.8%, lubricant 0.5%-1.2%, antioxidant 0.2%-0.5%, reinforcing agent 0.3%-1.0%;The composite binder is mixed by nylon 6, nylon 12 and polyphenylene sulfide according to weight ratio 2:1:0.5-1, the injection molding magnetic ferrite composite material and preparation method thereof, make composite material have good injection molding fluidity, can be prepared shape complex, size tiny magnetic component device, forming precision is high, without subsequent processing, further improve production efficiency, reduce production cost.

The utility model provides a kind of underwater liquid oxygen gas explosion fracturer, including fracturer, liquid injection pipe, exhaust pipe, electric ignition device and biomass fuel core body, fracturer is equipped with biomass fuel core body, the material of fracturer is high molecule, high density polyethylene and nylon 12 thermoplastic material, fracturer is equipped with two and above pipe cap, fracturer has waterproof seal, electric ignition device is equipped with electric ignition head and electric ignition lead, fracturer structure uses two pipe caps, wherein pipe cap and liquid injection hole correspond with fracturer, operability is extremely strong, the fracturer of welding seal assembly completion is safe and reliable, it is a kind of simple and easy to use, reliable and efficient, economic and applicable underwater liquid oxygen gas explosion fracturer.

The application discloses a kind of high-strength rat-proof optical cable and preparation method thereof, including at least one reinforcing member, at least one cable core distributed outside the reinforcing member, an inner protective layer coated outside the cable core, an armored layer coated outside the inner protective layer, a rat-proof outer sheath coated outside the armored layer, wherein the cable core is composed of at least one optical fiber and loose tube;Wherein, by weight parts, the rat-proof outer sheath is made of the following raw materials: linear low density polyethylene 70-80 parts, nylon 12 20-30 parts, compatibilizer 5-8 parts, modified composite filler 15-20 parts, antioxidant 1-3 parts, lubricant 0.5-1 part.The high-strength rat-proof optical cable uses LLDPE / nylon 12 alloy matrix with a specific formula in the outer sheath, and introduces modified composite filler, so that the finally prepared optical cable outer sheath not only has excellent mechanical strength, wear resistance, realizes efficient, long-acting and environment-friendly biological rat-proof effect.

The application discloses a nylon 12 modified material resistant to high and low temperature impact and a preparation method and application thereof. The modified material comprises the following components in parts by weight: 48-85 parts of nylon 12, 10-30 parts of in-situ grafted temperature-resistant impact master batch, 5-20 parts of transparent nylon and 0-2 parts of processing aid; wherein the in-situ grafted temperature-resistant impact master batch comprises the following components in parts by weight: 50-88 parts of nylon 12, 10-40 parts of non-polar elastomer, 0.4-4 parts of grafted monomer, 0.1-0.4 parts of initiator and 0-2 parts of processing aid. The application can significantly improve the stability and durability of the nylon 12 modified material under high and low temperature impact cycles, and as a metal insulation layer coating material, the application can not have problems such as cracking in the process of more than 600 high and low temperature impact cycles.

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 application provides a high gas barrier nylon 12, a preparation method thereof and an article containing the high gas barrier nylon 12. The high gas barrier nylon 12 comprises a block copolymer of nylon 12 segments and nylon 101 segments, wherein the mass ratio of the total mass of decanediamine and isophthalic acid to the mass of dodecanolactam used in the preparation process is 1:1-3. The long-chain barrier nylon is prepared by introducing the nylon 101 segments containing benzene rings into the main chain of the nylon 12. Compared with a random copolymer of the nylon 12 and the nylon 101, the molecular chain of the long-chain barrier nylon can still maintain higher regularity, and the crystallinity is higher; therefore, the long-chain barrier nylon is easier to be processed and molded while having better barrier performance.

The invention relates to the technical field of medical polymer materials, and particularly discloses a nylon material for a medical catheter as well as a preparation method and application of the nylon material. The nylon material for the medical catheter is mainly prepared from the following raw materials in percentage by weight: 80-90% of nylon resin, 8-12% of organic grafted SEBS (Styrene-Ethylene-Butylene-Styrene) and 2-8% of an anticoagulant, the nylon resin is selected from nylon 12 and nylon 6, and the weight ratio of the nylon 12 to the nylon 6 is (6-8): (2-4); the organic grafted SEBS is obtained by treating SEBS resin by adopting maleic anhydride, 2-acrylamido-2-methylpropanesulfonic acid and hydroxyethyl methylacrylate. Through mutual cooperation of the raw materials, the nylon material has the advantages of high tensile strength, high elongation at break, good anticoagulation performance, good platelet adhesion resistance and high biological safety, achieves balance in mechanical properties, blood compatibility and biological safety, and meets the requirements of medical catheters.

The present invention provides a bonded magnet having good heat resistance. The present invention relates to a bonded magnet containing a SmFeN magnetic powder, nylon 12, and a hexafluoroisopropanol-unextractable component. The present invention also relates to a method of preparing a bonded magnet, including: bringing a raw material bonded magnet containing a SmFeN magnetic powder and nylon 12 into contact with an amorphizing agent; and heat-treating the raw material bonded magnet in contact with the amorphizing agent.

This invention relates to the field of chemical fiber technology, specifically to a high-amino nylon 66 fiber and its preparation process, comprising: S1 synthesizing a high-amino polymer; S2, under nitrogen protection, adding a catalyst and caprolactam or lauryl lactam to perform in-situ ring-opening polymerization on the surface of the high-amino polymer powder to generate a nylon 6 or nylon 12 coating layer; S3, melting and blending the coated high-amino polymer powder with PA66 chips in a certain proportion using a twin-screw extruder to obtain a high-amino functional masterbatch; and S4, preparing the high-amino nylon 66 fiber. The core of this invention lies in designing and synthesizing a high-amino polymer with a structure highly similar to PA66 but with an extremely high terminal amino content. Through an innovative "microencapsulation-masterbatch" technology, the dispersibility and thermal stability issues in the PA66 matrix are solved. Finally, through precise metering and blending spinning, a highly reactive nylon 66 fiber with controllable amino content is prepared.

The application belongs to the technical field of composite materials, and particularly relates to a material for preventing blockage of a washing device and a preparation method thereof. The composite material comprises the following components in parts by weight: nylon 12T 80-100 parts, inorganic fiber filler 20-30 parts, toughening agent 5-10 parts, diatomite micro powder 10-15 parts, sarin resin 3-6 parts, graphene 1-3 parts, antioxidant 0.5-2 parts, lubricant 0.5-2 parts, coupling agent 0.5-2 parts. Diatomite provides a rigid skeleton in the micron scale, and graphene constructs a reinforcing network in the nanometer scale, forming a multi-level reinforcing structure. The high specific surface area of graphene can bridge the diatomite micro powder, improving the interface stress transmission. The sarin resin, as a flexible phase, can absorb energy when deformed under stress. The above fillers are combined with each other, effectively realizing the balance between the rigidity and toughness of the nylon 12T composite material.

The application discloses a high-impact anti-aging fiber reinforced nylon 12 composite material and a preparation method thereof. The fiber reinforced nylon 12 composite material is prepared from the following raw materials in parts by weight: nylon 12 resin, a dynamic vulcanization type in-situ grafting toughening agent master batch, glass fiber and a processing aid. The dynamic vulcanization type in-situ grafting toughening agent master batch is used in the form of a master batch, so that the low-temperature toughness of the fiber reinforced nylon 12 composite material and the performance decline rate of the fiber reinforced nylon 12 composite material in a high-temperature hydrolysis aging environment can be improved without affecting the strength and modulus and other properties.

The invention relates to a high-strength impact-resistant flame-retardant nylon 66 composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by mass: 40-50 parts of nylon 66, 6-20 parts of compound long carbon chain nylon, 24-30 parts of a compound flame retardant, 15-40 parts of a reinforcing filler, 0.2-1 part of a lubricant and 0.05-0.5 part of an antioxidant. The compound long carbon chain nylon is nylon 610 and nylon 12, and the mass ratio of the nylon 610 to the nylon 12 is 2: (2.9-3.05); the compound flame retardant is brominated polystyrene and antimony trioxide, and the mass ratio of the brominated polystyrene to the antimony trioxide is 4: (0.95-1.13). The preparation method comprises the following steps: drying, mixing and melting the raw materials, and extruding and granulating to obtain the high-strength impact-resistant flame-retardant nylon 66 composite material. The nylon 66 composite material provided by the invention has high strength and high impact resistance while realizing the high flame retardant grade of UL94 V-0, has the characteristics of simple process and controllable cost, and has important technical value and wide market prospect.

The application discloses a high-metal-adhesion nylon 12 modified material and a preparation method and application thereof. The modified material comprises the following components in parts by weight: 55-90 parts of nylon 12, 10-40 parts of in-situ grafting adhesion master batch and 0-2 parts of processing aid; wherein the in-situ grafting adhesion master batch comprises the following components in parts by weight: 50-85 parts of nylon 12, 10-40 parts of adhesive resin, 0.4-4 parts of grafting monomer, 0.1-0.4 parts of initiator and 0-2 parts of processing aid. The nylon 12 modified material can effectively improve the adhesion between nylon 12 and metal materials without metal surface treatment or adhesion layer, and can maintain good adhesion force retention rate after extreme hot and humid aging.

The invention provides a nuclear power plant direct current and UPS system self-repairing winding cable and a production method, and belongs to the technical field of cables, and the cable comprises a double-layer insulating layer, a wrapping layer and an outer sheath layer; wherein the double-layer insulating layer comprises an inner insulating layer and an outer insulating layer; the cable structure comprises an inner insulating layer, an outer insulating layer, a wrapping layer and an outer sheath layer from inside to outside in sequence. Specifically, the inner insulating layer is made of a crosslinked polyethylene material; the outer insulating layer is made of a polyolefin material; the wrapping layer is formed by wrapping a polyimide tape; the outer sheath layer is made of an improved sheath material. The improved sheath material nylon 12 has hydrophobicity and self-repairability, so that the water resistance and water tree resistance of the cable can be improved, and cracks can be repaired in a short time to realize short-time operation.

The application provides a cooling pipe material with a double-layer structure. The cooling pipe comprises a two-layer structure of an A layer and a B layer, wherein the A layer is an outer layer and the B layer is an inner layer; the A layer is a flexible modified nylon 12, and the B layer is a grafted modified polyolefin alloy. The cooling pipe and the material have the advantages of hydrolysis resistance, alcoholysis resistance, water vapor transmission resistance, low-temperature impact resistance, stress cracking resistance, simple forming process, small equipment investment and the like.

Provided are certain membranes useful in the filtration of liquids and removal of various contaminants therein. In certain aspects the membranes have as one component a polyamide such as Nylon 11 and / or Nylon 12. Also provided is methodology for manufacturing such membranes and their use in filtration and purification of liquids. Membranes of the disclosure thus prepared exhibit superior acid stability when compared to polyamide membranes prepared from Nylon 6 or Nylon 6,6.

The present application relates to the field of nylon, especially to a preparation method of fluorescent nylon 12.The preparation method of the fluorescent nylon 12 comprises the following steps: mixing a fluorescent precursor and nylon 12, and then carrying out reaction after melting to obtain the fluorescent nylon 12.The present application innovatively combines the preparation process of carbon dots with the processing technology of nylon 12, and the fluorescent nylon 12 is obtained by carrying out reaction after melting.

The invention discloses a nylon 12 resin and a preparation method thereof, and a nylon 12 fiber and a preparation method thereof. Preparation raw materials of the laurolactam resin comprise the following components in parts by weight: 100 parts of laurolactam, 0.2-1 part of an end-capping reagent, 4-8 parts of metal salt, 0.1-0.5 part of a catalyst, 0.01-0.05 part of a main antioxidant, 0.01-0.05 part of an auxiliary antioxidant and 5-20 parts of water. The molecular weight distribution (PDI) of the nylon 12 resin is 1.6-1.9, and the prepared nylon 12 fiber has the advantages of few broken ends, high monofilament strength (greater than or equal to 5.5 cN / dtex) and good stretchability, is suitable for spinning of superfine denier specification fiber 30D / 24F, has high color fastness, and is helpful for reducing chromatic aberration and dyeing defect phenomena in the dyeing process.

The invention belongs to the technical field of composite materials, and particularly relates to a material for an anti-blocking washing device and a preparation method of the material. The composite material is prepared from the following components in parts by weight: 80 to 100 parts of nylon 12T, 20 to 30 parts of inorganic fiber filler, 5 to 10 parts of flexibilizer, 10 to 15 parts of diatomite micro powder, 3 to 6 parts of sarin resin, 1 to 3 parts of graphene, 0.5 to 2 parts of antioxidant, 0.5 to 2 parts of lubricant and 0.5 to 2 parts of coupling agent. Diatomite provides a rigid framework in the micron scale, graphene constructs an enhanced network in the nano scale, and a multi-stage enhanced structure is formed. The high specific surface area of graphene can bridge diatomite micro powder, and interface stress transfer is improved. Surlyn resin is used as a flexible phase and can absorb energy when being deformed under stress. The fillers are combined with one another, so that the balance of rigidity and toughness of the nylon 12T composite material is effectively realized.

The application discloses a kind of high-performance injection molding ferrite granules, using strontium ferrite magnetic powder as core magnetic component, with the composite binder of nylon 6, nylon 12 and polyphenylene sulfide, and single alkoxy titanate coupling agent and composite lubricant, realize the synergistic promotion of magnetic performance, processing fluidity, mechanical property and heat resistance;The magnetic energy product of the obtained granules can reach 2.1-2.4 MGOe, compared with the existing domestic industrialization level, has significantly improved, tensile strength is greater than or equal to 18MPa, impact strength is greater than or equal to 2.5kJ / m², continuous working temperature can reach more than 180℃, solve the technical pain points of the contradiction between magnetic performance and processing performance of existing products, insufficient heat resistance.

The application provides a high-adhesion nylon 12 powder coating, a preparation method and use thereof. The method comprises the following steps: mixing nylon 12 particles and a solvent, dissolving at a high temperature, reducing to a crystallization temperature, and precipitating the nylon 12 powder; adding dodecanolactam, a comonomer, an end-capping agent, a catalyst and water into a polymerization reactor to polymerize and obtain copolymerized nylon 12 particles; dissolving the copolymerized nylon 12 particles in a solvent to form a solution, the solution adheres to the surface of the nylon 12 powder, and after separation, drying and screening, the high-adhesion nylon 12 powder coating is obtained. The powder coating prepared by the method has higher adhesion than common nylon 12 powder coatings, and the addition of the copolymerized nylon 12 can make the surface of the product coating more smooth.