1516 results about "Nylon 66" patented technology

The invention discloses a high electrical property and low corrosion flame retardant reinforcing nylon material and a preparation method thereof, aiming at solving the defects of low electrical property and high corrosion caused by red phosphorus based flame retardant added into flame retardant reinforcing nylon in the prior art. The invention adopts the technical scheme that the high electrical property and low corrosion flame retardant reinforcing nylon material disclosed by the invention has the formulation (by weight percent): (1) 40-65% of nylon 66 resin, (2) 10-20% of red phosphorus based flame retardant masterbatch, (3) 1-5% of compatilizer, (4) 3-10% of synergistic compound flame retardant system, (5) 0.5-5% of acid absorbent, (6) 0.1-0.5% of antioxidant, (7) 0.2-0.8% of lubricating agent and (8) 10-30% of glass fiber; and the reinforcing nylon material can be prepared by mixing all the components in a high-speed mixing machine for 1-2min and then putting into a twin-screw extruder for extrusion and pelleting. The flame retardant reinforcing nylon material is excellent in the electrical property, low in corrosion (extremely low in corrosion for equipment and a mould) as well as high in fluidity, heat resistance and cost performance, and is capable of meeting the requirements of electrical and electronic appliances such as a temperature controller, a contactor, a circuit breaker and the like as well as domestic appliance products.

The invention discloses a glass fiber reinforced nylon colored insulated strip used for an aluminum alloy door and window. The compositions by weight portion of the glass fiber reinforced nylon colored insulated strip are: 100 portions of nylon resin, 5 to 50 portions of glass fibers, 0 to 50 portions of inorganic filler, 5 to 25 portions of toughening agent, 0.3 to 5 portions of coupling agent, 0.3 to 5 portions of dispersing lubricant, 0.2 to 5 portions of antioxidant, 0.1 to 1 portion of light stabilizer, 0.1 to 1 portion of heat stabilizer and 2 to 10 portions of colored masterbatch. The invention also discloses a method for preparing the colored insulated strip. The glass fiber reinforced nylon colored insulated strip solves the problems that the masterbatch and the filler are difficult to disperse and nylon 66 is easy to change color during the processing procedure; the insulated strip products have various colors, superior performance and beautiful appearance; and the glass fiber reinforced nylon colored insulated strip realizes perfect matching with the window color, can achieve the beautility effect, meets and enlarges the demand of clients and the market, and is favorable for promotion, use and development of the glass fiber reinforced nylon 66 insulated strip.

Polyamide engineering plastic for rail fasteners of high speed railway and a preparation process are disclosed. The plastic belongs to organic material, which is characterized in that the plastic is formed through conducting mixture extrusion pelleting for the following components: material substrate material with 48-88% percentage by weight, wherein the substrate material is polyamide 6 resin, or is polyamide 66 resin, or is the mixture of polyamide 6 resin and polyamide 66 resin, addition agent with 0-15% percentage by weight, wherein the addition agent is toughening agent and compatilizer, intensifier with 10-50% percentage by weight, wherein the surface of intensifier is treated with silane coupling agent with 0.2-5% percentage by weight relative to additive matters. Polyamide engineering plastic provides raw material for producing first-grade railway rail fasteners. The fastener which is produced by the plastic has the advantages of light weight, high strength and high impact, large loading, easy machine shaping and dyeing and reasonable cost.

The invention discloses a carbon-reinforced halogen-free fire-resistant nylon 66, which comprises by weight: nylon 66 resin 30-50 portions, long carbon fiber 10-50 portions, covering red phosphorus substrate 5-20 portions, fire resisting assistant 0-20 portions, flexibilizer 0-10 portions, antioxidant 0.1-1 portions, and processing assistant 0.1-15 portions. The carbon-reinforced halogen-free fire-resistant nylon 66 made by the invention is of high strength, high modulus, small creepage, and permanent anti-static performance, also good fire resistance, high mechanical strength, is resistant to high temperature, light, easy to process, with good fire resistance, and is also environmental friendly. The preparing method of the invention is simple to operate and applicable for industrialized production.

The invention discloses a preparation method of a halogen-free flame retardant nylon 66 polymer and belongs to the field of a preparation technology of flame retardant nylon 66. According to the method, a copolymerization reaction between a reactive flame retardant-a DOPO derivative and diacid or diamine is firstly carried out to generate salt; and a copolymerization reaction between the generated salt and nylon 66 salt is then carried out so as to obtain the halogen-free flame retardant nylon 66 polymer. By selecting the new reactive flame retardant (the DOPO derivative) and through a matched polymerization formula and technology, the flame retardant nylon 66 polymer is developed. The flame retardant nylon 66 polymer has characteristics of high melting point, high decomposition temperature of the flame retardant, high molecular weight flame retardant polymer and high-strength flame resistant fibre, and fills gaps at home and abroad.

The invention relates to a process for producing a polyester industrial long fiber for processing a safe air bag of an automobile, which sequentially comprises the following steps: A. processing a polyester slice with high viscosity: enabling the viscosity of the polyester slice to reach 1.0-1.1dl/g; B. melting and spinning: transmitting the polyester slice after solid phase polymerization to a spinning screw rod extruder, melting in a spinning screw rod, entering a spinning assembly by a metering pump and extruding from a fiber spray plate with a diameter of 190 mm to 220 mm to spin fusant, , then heating by a slow cooling heater, carrying out cooling for molding by a side-molding blowing device and then entering a spinning passage; C. stretching and winding: oiling the surface of a fiber and carrying out second-grade high-speed stretching with the total stretching multiple being 5.0 to 5.8, carrying out high-temperature loosing thermoforming at 230 DEG C-250 DEG C and carrying out winding for molding in the range of the winding process speed of 2,500-3,000 m/min to prepare a finished product. The fiber for the safe air bag, which is produced by the process, can completely replace a nylon 66 fiber, is used for spinning terylene safe air bag fabrics and greatly reduces the processing cost.

The invention discloses a high-strength PPO/PA66 alloy material and a preparation method thereof. The high-strength PPO/PA66 alloy material is prepared from the following components in percentage by weight: 20-40% of polyphenyl ether resin, 20-40% of nylon 66 resin, 5-10% of compatilizer, 5-10% of toughener, 5-15% of glass fiber, 5-15% of glass microballoon, 5-15% of mica powder, 0.2-0.4% of antioxidant and 0.5-1% of other assistants. By compounding the glass fiber, the glass microballoon and the mica powder to enhance PPO/PA66 alloy, the prepared alloy material not only has excellent combination properties including high strength, good heat resistance and easy spraying, but also has excellent dimensional stability and low warpage rate. Therefore, the invention is suitable for molding large structural parts and heated components.

The invention provides a hydrolysis-resistant alcoholysis-resistant nylon 66 composite material and a preparation method thereof. The hydrolysis-resistant alcoholysis-resistant nylon 66 composite material is characterized by comprising the following ingredients in parts by weight: 51.8 to 84.5 parts of nylon resin, 15 to 40 parts of short-cut glass fibers, 0.1 to 0.6 parts of nucleating agent, 0.1 to 0.6 parts of thermal stabilizer, 0.1 to 1.0 part of alcoholysis-resistant auxiliary agent, 0.1 to 5 parts of barrier material and 0.1 to 1.0 part of lubricant. The manufacturing method comprises the following steps that: the nylon 66 resin, antioxidant, hydrolysis-resistant agent, the barrier material, the nucleating agent and the lubricant, which are previously dried, are uniformly mixed at a high speed; and the mixture and the glass fiber are fed into a double-screw extruder to be extruded and pelleted. The hydrolysis-resistant alcoholysis-resistant nylon 66 composite material not only has good high temperature resistance and high thermal oxidation aging resistance, but also has excellent property for resisting the corrosion of glycol and solution thereof, and can completely satisfy the requirements on manufacturing components such as car heat radiator cooling water tanks, thermostats and charge air coolers.

The invention discloses a high-glow-wire initiation temperature flame-retardant nylon composition. When a certain single flame retardant is used, although a nylon material can obtain a good combustion performance, the temperature of glow wires cannot reach 850 DEG C easily, and the requirement of electronics on high-glow-wire temperature of a material can not be met, and a serious fusion dropping phenomenon occurs in combustion. The high-glow-wire initiation temperature flame-retardant nylon composition is a blended material, and the blended material comprises the following components in percentage by mass: 65-85% of nylon 66 resin, 10-30% of multi-component flame retardants, 0.1-3% of anti-dropping agents, 0.1-3% of carbon formation accelerants, 1-3% of glow wire initiation temperature reinforcing agents, 0.1-1% of anti-oxidation agents and 0.5-2% of coupling agents. The blended material has favorable mechanical performance, and can meet the high-glow-wire initiation temperature requirement.

The invention discloses a high heat conducting nylon composite material and a preparation method thereof. The high heat conducting nylon composite material belongs to one of functional high molecules. The composite material is prepared from a thermoplastic nylon resin base body, heat conducting filler and other processing agents. The heat conducting coefficient is greater than 2.7W/m.K. The resin base body can be nylon 6 or a compound of nylon 6, nylon 9, nylon 66, nylon 610 and nylon 1010. The heat conducting filler can be one or more of magnesium oxide, aluminum oxide, aluminum nitride, boron nitride, silicon nitride, a multiwalled carbon nanotube and a graphite flake layer. The processing agents can be octadecanamide, polyethylene wax, liquid paraffin and the like. The method disclosed by the invention is simple to operate and low in cost, and can prepare the heat conducting composite material with excellent comprehensive performance by one step. The method is easy to realize industrialized production and can be widely applied to the fields of automobiles, household appliances, meter cases, circuit elements and the like.

The invention relates to a highly wear-resistant and high-rigidity reinforced nylon 66 compound. The invention is characterized in that the compound consists of materials of the following weight portions: 66 portions to 100 portions of nylon, 0.1 portions to 15 portions of nucleater, 5 portions to 30 portions of wear-resistant agent, 0.5 portion to 3 portions of heat stabilizer and processing aid, and 15 portions to 105 portions of glass fiber. The invention has the advantage that each index all reaches or surpasses the scheduled requirements; the bending modulus of the material reach above 11000MPa; the hardness reaches to 135 N/mm2. Under the condition of no lubrication, surface pressure of 1.5 kg/m2, speed of 29 m/min and a temperature of 23 DEG C, the maximum static friction coefficient is 0.11; the maximum dynamic friction coefficient is 0.07. Under the condition of no lubrication, surface pressure of 100kg/cm<2> and speed of 23m/min, the PV value reaches above 2270kg/cm<2> question mark m/min.

The invention relates to aluminum alloy section material heat insulation bar special enhancing plasticizing nylon 66 composite material and its preparing method. Its components part by weight as follows: nylon 66 resin 100, graft elastomer 5-15, glass fiber 0-40, inorganic filling 0-30, silane coupler 0.5-3, dispersion lubricant 0.5-4, compound antioxidant 0.3-3, graft polyethylene 3-10, and black agglomerate 3-5. The preparing method includes the following steps: batching, mixing, fusing, cross blend extruding granulating with 240-270 degree centigrade extruding temperature, packing. The enhancing plasticizing nylon 66 composite material has the advantages of high strength, luster, fluidity, low water absorption etc.

The invention discloses graphene reinforcing and toughening nylon resin. The graphene reinforcing and toughening nylon resin comprises the following components in percentage by weight: 68%-76% of nylon 66, 20%-25% of phosphor-nitrogen structure synergistic nylon fire retardant, 1%-5% of modified graphene and 1%-2% of other auxiliaries. The preparation method of the graphene reinforcing and toughening nylon resin comprises the following steps of: carrying out surface pre-treatment on the graphene; mixing the grapheme subjected to surface treatment with various auxiliaries; uniformly mixing the materials in proportion in a high-speed stirring hopper; adding the uniformly mixed materials to a double-screw extruder with setting temperature of 220 DEG C to 280 DEG C and length-diameter ratio (L/D) of 32:1 to 40:1; and vacuumizing the mixer for pelletizing the mixed materials.

The invention discloses a high strengthening and toughening type polyphenylene sulfide composite material. 100 wt% of the composite material comprises 45-55 wt% of polyphenylene sulfide resin, 30-50 wt% of glass fibers, 4-8 wt% of a toughening agent, 0.4-1.0 wt% of a compatibilizer and 0.1-3 wt% of other additives; the surface of the glass fibers is impregnated with a silane coupling agent; the toughening agent is at least one selected from nylon 6, nylon 66, ethylene-methyl acrylate-glycidyl methacrylate and a maleic anhydride grafted styrene-ethylene-butadiene-styrene block copolymer elastomer; and the compatibilizer is selected from epoxy resins. The polyphenylene sulfide composite material disclosed in the invention has the advantage of high rigidity, high toughness and high flame retardation property, is especially suitable for producing small parts and ultrathin parts which have high requirements for the impact performance, and greatly broadens the application range of a phenyl sulfide material.

The invention is suitable for the technical field of high polymer materials and provides a nylon 66 composite material, a preparation method thereof and an electronic device. the nylon 66 composite material comprises the raw materials in percentage by weight as follows: 40%-65% of PA 66 resins, 8%-12% of a roughening agent, 20%-35% of heat conduction powder; 10%-15% of an antistatic agent, 2.5%-5.5% of a compatilizer, 0.1%-0.5% of a lubricating agent, 0.1%-1% of an antioxidant agent, 0.1%-2% of a coupling agent and 0.2%-0.5% of a nucleating agent, wherein the heat conduction powder is processed by the coupling agent. According to the invention, when the nylon 66 composite material is prepared, the coupling agent is used for processing the heat conduction powder, and two fillers of the heat conduction powder and a conductive agent are mutually matched and coordinated, so that the excellent heat conductivity and antistatic property can be obtained with low filler consumption, and simultaneously the prepared nylon 66 composite material has excellent physical and mechanical properties.

Provided is a high-performance pneumatic radial tire for passenger cars which uses a hybrid cord composed of an aramid cord and a Nylon 66 cord having different twist counts for the first twist and different twist counts for the second twist, as a reinforcing belt, and thereby has improved high speed durability and steering stability.

The invention discloses a glass fiber reinforced polyamide 66 composite material. The glass fiber reinforced polyamide 66 composite material comprises the following raw materials in percentage by weight: 50-79% of polyamide 66, 20-49% of glass fiber, 0.1-2% of a coupling agent, 0.5-5% of a compatilizer, 0.1-2% of a primary antioxidant, 0.1-2% of a secondary antioxidant, 0.1-2% of a lubricant and 0.1-3% of an anti-alcoholysis agent, wherein the glass fiber is alkali-free glass fiber with the monofilament diameter of 5-9 micrometers; the anti-alcoholysis agent is polycarbodiimide. According-the glass fiber reinforced polyamide 66 composite material, alkali-free glass fiber with thinner monofilament diameter is adopted to reinforce PA (polyamide) 66, and meanwhile, the anti-alcoholysis agent and other technologies are adopted, so that a better anti-alcoholysis property is obtained, and the glass fiber reinforced polyamide 66 composite material can be used for preparing an intake manifold of an automobile engine. The invention further discloses a preparation method for the glassfibre reinforced polyamide 66 composite material; the preparation method can be realized through a conventional double-screw extruder. The glass fiber reinforced polyamide 66 composite material is simple in preparation, and is beneficial to industrial mass production.

The invention discloses a thermoplastic elastomer (TPE) alloy for nylon adhesive encapsulation. The TPE alloy comprises the following components in percentage by mass: 30-45 percent of TPE, 10-20 percent of engineering plastic, 10-35 percent of plasticizer, 10-15 percent of compatilizer, 10-15 percent of filler and 1-2 percent of aid, wherein the TPE is one or a mixture of several in a styrene thermoplastic elastomer, a thermoplastic polyurethane elastomer and a polyester elastomer; the engineering plastic is one or more selected from polypropylene, polyethylene, polystyrene, polycarbonate, nylon 6 and nylon 66. The invention also discloses a method for preparing the TPE alloy. The TPE is matched with the engineering plastic, and the components have a synergistic effect in the melt extrusion process, so that the mechanical properties, such as hardness, tensile strength and elongation at break, of the TPE alloy are excellent, and the TPE alloy is high in adhesion property of different models of nylon encapsulations and is suitable for industrial production.