34 results about "Nylon 12" patented technology

The invention discloses a high-strength rat-proof optical cable and a preparation method thereof. The high-strength rat-proof optical cable comprises at least one reinforcing piece, at least one cable core distributed outside the reinforcing piece, an inner protective layer wrapping the cable core, an armor layer wrapping the inner protective layer and a rat-proof outer sheath wrapping the armor layer, and the cable core is composed of at least one optical fiber and a loose tube; wherein the rat-proof outer sheath is prepared from the following raw materials in parts by weight: 70 to 80 parts of linear low-density polyethylene, 20 to 30 parts of nylon 12, 5 to 8 parts of compatilizer, 15 to 20 parts of modified composite filler, 1 to 3 parts of antioxidant and 0.5 to 1 part of lubricant. According to the high-strength rat-proof optical cable, the LLDPE / nylon 12 alloy matrix with a specific formula is adopted in the outer sheath, and the modified composite filler is introduced, so that the finally prepared optical cable outer sheath has excellent mechanical strength and wear resistance, and an efficient, long-acting and environment-friendly biological rat-proof effect is achieved.

The utility model discloses a high pressure fast -charging female row for new energy automobile. The female row includes metal conductor and the insulating layer of cladding metal conductor surface, the insulating layer material is one or more of nylon 12, modified nylon 12. Can solve with temperature promotion, and the problem of the peeling of insulating layer caused by the insufficient adhesion between insulating layer and conductor, improves the heat resistance of insulating layer material.

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 invention relates to a PA12 / PA6 parallel composite elastic fiber and a preparation method thereof. Nylon 12 is adopted as a high-shrinkage component, PA6 is adopted as a low-shrinkage component, parallel compounding is achieved, industrial production with high spinning speed and no yarn breakage can be achieved, and real production significance is achieved. Meanwhile, the PA12 / PA6 parallel composite elastic fiber is excellent in elastic property, low in modulus, soft and skin-friendly, has excellent dyeing property in an acid dye system, and provides a new solution for elastic high-end fabric.

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 discloses a multi-layer composite hot melt adhesive film and a preparation process thereof and a composite board, and relates to the field of adhesives, the multi-layer composite hot melt adhesive film comprises a low-temperature layer, a high-temperature layer and a core layer, the low-temperature layer is used for being bonded with PET, the high-temperature layer is used for being bonded with metal, the core layer is used for being bonded with the low-temperature layer and the high-temperature layer, the low-temperature layer is a modified polyolefin hot melt adhesive film, and the high-temperature layer is a modified polyolefin hot melt adhesive film. The high-temperature layer is a polyolefin hot melt adhesive film; the core layer comprises the following raw materials in parts by weight: 26-32 parts of ethylene-vinyl acetate copolymer; 40 to 48 parts of an amorphous plastomer APAO; 2-4 parts of a polypropylene-alkenyl-containing epoxy compound copolymer; 5-8 parts of nylon type copolyamide; 1 to 3 parts of a silane coupling agent KH-550; the nylon type copolyamide is a polymer of nylon 12 and caprolactam. According to the prepared hot melt adhesive film, the PET layer and the metal plate are bonded together, the bonding strength is high, and water resistance, high temperature resistance and corrosion resistance are achieved.

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 application belongs to the technical field of optical fiber preparation equipment, and discloses a coating device for preparing invisible optical fiber based on nylon 12. The coating device for preparing invisible optical fiber based on nylon 12 comprises an outer protective shell, a feeding port and a discharging port are arranged on the left side and the right side of the outer protective shell respectively, a rotating drum is movably connected to the middle part of the outer protective shell, and a driving motor is fixedly connected to the outer side of the outer protective shell through a mounting plate. The coating device for preparing invisible optical fiber based on nylon 12 is used in cooperation with a nozzle assembly by using a spraying mechanism, the driven gear and the rotating drum are rotated by driving the driving motor, the coating box, the spraying pipe and the nozzle are rotated, the nozzle is rotated around the optical fiber, the uniformity of spraying is improved, after the nozzle assembly absorbs waste gas and solution vapor, the spraying effect is further improved by further sucking the waste gas and the solution vapor into the spraying pipe through a vacuum air extractor and discharging the waste gas and the solution vapor and pressurizing the nozzle, so that the spraying is more uniform and the spraying effect is improved.

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.

The invention relates to recombinant bacteria as well as a construction method and application thereof. The recombinant strain takes escherichia coli as a starting strain, and a UcfatB gene, a CYP153A-BM3 gene, a dehydrogenase gene and a transaminase gene are integrated on a genome. In the recombinant strain, escherichia coli is taken as a starting strain, a UcfatB gene, a CYP153A-BM3 gene, a dehydrogenase gene and a transaminase gene are integrated on a genome of the escherichia coli, a pgi gene on the genome is knocked out, acetyl coenzyme A is synthesized into dodecanoic acid under the UcfatB, the dodecanoic acid is changed into 12-hydroxydodecanoic acid under the catalysis of CYP153A-BM3, and the dodecanoic acid is converted into 12-hydroxydodecanoic acid under the catalysis of CYP153A-BM3. 12-hydroxylauric acid is finally changed into a nylon 12 monomer under the action of dehydrogenase and transaminase. Through gene modification of escherichia coli, the nylon 12 monomer is produced by means of gene engineering, culture conditions are mild, and the method is environment-friendly.

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 discloses a preparation method of a neodymium iron boron magnet ring. The preparation method comprises the following steps: (1) under the condition of applying a radiation orientation magnetic field, performing injection molding on a material comprising 850-1100 parts by weight of neodymium iron boron alloy powder and 60-100 parts by weight of a binder to obtain an annular blank; the binder is selected from one or more of phenolic resin, nylon 12, polyphenylene sulfide, polyformaldehyde, polypropylene, polyethylene, phthalate and paraffin; (2) carrying out heat treatment on the annular green body at the temperature of 350-700 DEG C to obtain a treated green body; (3) sintering the treated green body at the temperature of 900-1100 DEG C, and cooling to obtain a sintered magnet; and tempering the sintered magnet at 400-700 DEG C, and cooling to obtain the neodymium iron boron magnetic ring. According to the preparation method, the magnetic performance of the neodymium iron boron magnetic ring can be improved.

The present application discloses a one-step preparation of a bio-based nylon 12 elastomer, its preparation method, and application, belonging to the technical field of polyamide materials. The method comprises the following steps: (1) preparing materials: mixing bio-based 12-aminododecanoic acid, polyetheramine, reaction aid, and water in a preparation tank, heating and stirring them uniformly to form a mixture; (2) feeding: pressing the mixture into a polymerization kettle by nitrogen pressurization; and (3) polymerizing. The present application optimizes the raw material combination and polymerization process path to achieve a one-step polymerization reaction (i.e., in the same polymerization kettle) based on bio-based 12-aminododecanoic acid monomers to construct a polyether block amide nylon 12 elastomer. This not only improves the elongation at break and the rebound performance, but also achieves a stable polymerization process, controllable product quality, and good elasticity and processability. The elastomer is suitable for the fields of shoe soles, sealing strips, soft devices, etc.

The invention relates to the technical field of high polymer material synthesis, and particularly discloses a laurolactam segmented temperature control ring-opening polymerization method, nylon 12 and application thereof.The laurolactam segmented temperature control ring-opening polymerization method comprises the following steps that a polymer material is put into a polymerization reactor, the temperature is increased to a first temperature under the protective atmosphere, heat preservation is conducted, and a second temperature is obtained; the polymer material comprises laurolactam, a molecular weight regulator, a catalyst, an antioxidant and water; raising the temperature to a second temperature and keeping the temperature and the pressure; raising the temperature to a third temperature and keeping the temperature and the pressure, wherein the third temperature is higher than the second temperature; the pressure is relieved to normal pressure, the temperature is adjusted to a fourth temperature during pressure relief, and the fourth temperature is not higher than the third temperature; reducing the pressure to preset pressure and maintaining the pressure; and recovering to the positive pressure, cooling, and pelletizing to obtain the nylon 12. According to the invention, ring-opening polymerization of laurolactam is carried out by adopting segmented temperature control, so that the polymerization reaction process is dynamically controllable, and oxidative degradation and chain fracture side reactions caused by high temperature are effectively inhibited.

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 discloses a nylon elastomer composition as well as a preparation method and application thereof. The nylon elastomer composition is prepared from the following components in parts by mass: 60 to 65 parts of nylon 12 elastomer base material, 8 to 10 parts of surface sulfonation metal organic framework (MOF), 18 to 22 parts of hydroxylated polydimethylsiloxane (PDMS) microspheres, 6 to 8 parts of fluorinated carbon nanotubes, 3 to 4 parts of amino-fluorine amphiphilic nano-diamond and 2 to 3 parts of hydrogenated castor oil. The comprehensive performance of the nylon elastomer is remarkably improved through a three-stage synergistic mechanism, specifically, a surface sulfonation metal organic framework constructs a directional ion channel to achieve friction self-adaptive lubrication, amino-fluorine amphiphilic nano-diamond serves as a bridging agent to eliminate interface repulsion and evenly disperse stress, phase separation is inhibited through hydrogenated castor oil phase change, and friction self-adaptive lubrication is achieved; and by combining electrostatic field induced orientation and pulsed electric field driving, the elasticity and lubricity of the nylon elastomer are improved at the same time.

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.

The invention provides an inverter assembly and a vehicle with the same. The inverter assembly comprises a shell, the shell comprises a shell body and a support body, the support body is connected with the shell body, the support body is provided with a containing cavity, a busbar element is arranged in the containing cavity, and the support body and the shell body are made of nylon 12 wires. The shell body and the support body are made of the nylon 12 wires, the nylon 12 wires have high heat resistance and good mechanical performance, the structural stability and insulativity of the nylon 12 wires can still be kept at high temperature, and the problems that traditional plastic materials are softened and deformed in a high-temperature environment are effectively solved; according to the utility model, the nylon 12 wire rod is adopted to form the accommodating cavity surrounding the busbar element, so that the busbar element can still be stably supported and isolated at high temperature generated in the operation process of the inverter, the thermal deformation of the busbar element is reduced, the risk of short circuit is reduced, and the overall reliability and safety of the inverter assembly are improved.

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.