28 results about "Melamine cyanurate" patented technology

This invention discloses an MPP pipe for power cables and its preparation method, relating to the field of polymer materials technology. The invention comprises, by weight, 80-90 parts of a toughening nucleating agent; 40-45 parts of an insulating nucleating agent obtained by in-situ composite and gradient temperature imidization treatment of a polyamic acid prepolymer prepared from hexagonal boron nitride nanosheets (prepared by surface modification with dopamine hydrochloride, followed by modification with octyltriethoxysilane) to obtain a silanized boron nitride suspension; 40-45 parts of melamine cyanurate; 2.1-2.4 parts of an antioxidant; 2.6-3 parts of a light stabilizer; 8-9 parts of a lubricant; and 1340-1500 parts of polypropylene. The introduction of the toughening nucleating agent and insulating nucleating agent in this invention effectively improves the flame retardancy, low-temperature rigidity-toughness balance, and aging resistance of the MPP pipe.

The application provides an antistatic flexible connection and a preparation method, and the antistatic flexible connection comprises a flange and a connecting piece connected with the flange, and the connecting piece is composed of a middle buffer layer and antistatic functional layers arranged on both sides of the middle buffer layer; the antistatic functional layer is composed of the following components in parts by weight: 5-10 parts of a conductive polymer, 2-5 parts of an interface modifier, 1-3 parts of a self-made antioxidant, 35-45 parts of inorganic filler modified polyurethane elastomer, 10-18 parts of functional fillers, 3-6 parts of fluorosilicone, 5-9 parts of melamine cyanurate, 8-12 parts of nano kaolin and 2-5 parts of polyethylene glycol diacrylate. Through reasonable collocation and synergistic effect of the components, the antistatic flexible connection has excellent performance in antistatic property, mechanical property, flame retardancy, aging resistance and the like, and meets the use requirements under complex working conditions.

The application provides a fire-retardant immersion type cooling liquid for high-multiplicity lithium iron phosphate battery packs and a preparation method thereof, raw materials of the fire-retardant immersion type cooling liquid include, in percentage by weight, 85-95% fluorine compound base carrier, 5-15% phosphorus-nitrogen composite fire retardant; the fluorine compound base carrier contains low-boiling-point hydrofluoroether, branched-chain perfluoropolyether and h-BN nanosheet, and the fire retardant is a microencapsulated ammonium polyphosphate and melamine cyanurate compound system. The preparation is completed through carrier mixing, nanosheet composite dispersion, fire retardant compounding and vacuum degassing. The application realizes high heat dissipation, high insulation, UL94 V-0 level halogen-free fire retardancy and more than 6 months of stable performance, solves problems such as high viscosity, slow heat dissipation, poor fire retardancy, environmental protection hidden danger and insufficient stability of traditional cooling liquids, and adapts to the safety cooling demand of high-multiplicity lithium iron phosphate battery packs.

This invention discloses a heat-absorbing layer for a metal oxide varistor. A thermally protected metal oxide varistor (TMOV) device includes: an MOV chip; a first electrode disposed on a first side of the MOV chip; a second electrode disposed on a second side of the MOV chip opposite to the first side; a conductive first lead connected to the first electrode; a heat-absorbing layer bonded to the second electrode by a heat-absorbing paste formed from a mixture of silica sand, melamine cyanurate, and silicone resin, wherein the heat-absorbing paste is formed from a mixture of melamine cyanurate and silicone resin; a thermal cutoff (TCO) element extending through pores in the heat-absorbing layer and having a first end electrically connected to the second electrode by a certain amount of solder having a melting temperature lower than the melting temperature of the TCO element; and a conductive second lead electrically connected to the second end of the TCO element.

This invention discloses a nitrogen-phosphorus flame retardant, a composition and composite material containing the flame retardant, its preparation method, and its application. The flame retardant has a structure as shown in formula (I), where n is an integer from 100 to 150. The preparation method of the flame retardant includes: synthesizing bis(4-formylphenyl) phenylphosphonate and bis(4-aminophenyl)phenylphosphonate, reacting the two to generate a Schiff base, and then reacting it with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to obtain the nitrogen-phosphorus flame retardant PCNPO. This flame retardant, when compounded with melamine cyanurate (MCA), can be used to prepare flame-retardant nylon 6 composite materials. This invention, through the synergistic effect of PCNPO and MCA, enables nylon 6 to achieve the UL94 V-0 flame retardant standard at a low addition level, while maintaining excellent mechanical properties and processing stability, and exhibiting strong charring ability, simple process, and environmental friendliness. (I)

This invention discloses a polyolefin flame-retardant masterbatch and its preparation method, which is prepared from 60-80 parts of polyolefin, 10-16 parts of melamine cyanurate, 2-4 parts of zinc aluminate, and 0.1-0.3 parts of antioxidant in parts by weight. The zinc aluminate in the polyolefin flame-retardant masterbatch prepared by this invention produces alumina during decomposition, which can promote the carbonization of the polyolefin resin matrix. Furthermore, the zinc aluminate forms an interwoven network structure in the polyolefin matrix, resulting in a continuous, flocculent protective char layer with a network structure on the surface of the polyolefin material during combustion. Therefore, it can increase the final char residue of the polyolefin composite material, achieving a flame-retardant effect.

This application discloses a lightweight PPO / PA foam material and its preparation method, relating to the field of polymer foam material technology. The method involves constructing a foaming composition using polyphenylene ether, polyamide 6, maleic anhydride-grafted polyphenylene ether, and epoxy-based reactive additives. After mixing and molding, the foam material is obtained through supercritical carbon dioxide saturation foaming and shaping. Further introduction of flame-retardant fillers composed of bisphenol A bis(diphenyl phosphate), melamine cyanurate amide, and zinc borate, as well as SiO2 aerogel or PTFE low-dielectric fillers, can yield flame-retardant, low-dielectric, and flame-retardant low-dielectric foam materials. The beneficial effects of this application are: it can maintain flame-retardant and low-dielectric properties while maintaining low-density mechanical properties, improve foaming stability and cell structure uniformity, enhance the overall structural continuity and comprehensive level of the molded body, and achieve synergy or combination of flame-retardant and low-dielectric functions.

The present application relates to a kind of high flame-retardant low-toxicity environmental protection computer cable and its preparation method, belong to computer cable technical field.The insulating layer and / or sheath layer of the cable uses environmental protection toughening flame-retardant composite material, it is with polyolefin resin as matrix, compound modified nano-aluminum hydroxide with KH560 silane coupling agent, melamine cyanurate, gradient compound ethylene-vinyl acetate copolymer and maleic anhydride graft polyolefin, by limiting core component ratio and key parameter, realize high flame-retardant, low-toxicity environmental protection and low-temperature toughness Synergistic unity.The present application process is simple and easy industrialization, applicable to computer room, automation control system, instrument signal transmission and other scenes, practicality is strong.

This invention provides a halogen-free flame retardant composition and its preparation method. The raw materials of the halogen-free flame retardant composition, by weight percentage, include 50%–70% polypropylene, 5%–10% reinforcing material, 20%–35% halogen-free flame retardant, 0%–10% flame retardant synergist, 0%–10% compatibilizer, 0.2%–1% anti-dripping agent, and 0.5%–2% processing aid. The halogen-free flame retardant, by weight percentage, comprises: 50%–60% metal ion-modified piperazine polyphosphate, 10%–20% metal ion-modified melamine polyphosphate containing melamine condensate, 10%–30% metal ion-modified melamine polyphosphate containing silane structure, and 2%–10% melamine cyanurate.

This invention discloses a thermally conductive and electrically insulating flame-retardant polypropylene composite material and its preparation method. The raw materials forming the composite material include a matrix and additives. The matrix is ​​selected from polypropylene. The additives include: modified exfoliated graphite selected from exfoliated graphite with melamine cyanurate chemically bonded to its surface; and an intumescent flame retardant. In this composite material, the modified exfoliated graphite and the intumescent flame retardant work synergistically to improve its dispersibility and interfacial compatibility, while achieving an integrated structure of flame retardant and thermally conductive functions. This endows the polypropylene material with excellent flame-retardant properties (low peak heat release rate and low total heat release rate), stable thermal conductivity, and good electrical insulation properties.

This invention discloses a high flame-retardant insulating phenyl silicone rubber for power applications and its preparation method, belonging to the field of silicone rubber technology. The phenyl silicone rubber, by weight, comprises the following raw material components: matrix material: 80-100 parts of vinyl-terminated polydimethylsiloxane and 20-30 parts of phenyl silicone rubber; reinforcing agent: 30-50 parts of fumed silica; flame retardant: 25-40 parts of modified magnesium hydroxide, 10-15 parts of ammonium polyphosphate, and 5-10 parts of melamine cyanurate; thermally conductive filler: 15-25 parts of nano-boron nitride; structure modifier: 2-4 parts of diphenylsilanediol and 3-6 parts of phenyl silicone oil; crosslinking agent: 8-12 parts of hydrogen-containing silicone oil; catalyst: 0.2-0.4 parts of platinum catalyst; inhibitor: 0.1-0.3 parts of ethynylcyclohexanol; functional additives: 1-3 parts of silane coupling agent and 0.5-1 parts of antioxidant.

The present application relates to a kind of color low hardness high flame-retardant ethylene-propylene-diene rubber blend and its preparation method, belong to rubber material technical field.The blend includes by mass fraction:ethylene-propylene-diene rubber 50-85 parts, liquid chlorinated polyethylene 10-35 parts, white carbon black 15-25 parts, coupling agent 1-2 parts, phosphorus-nitrogen composite flame retardant 60-100 parts, peroxide vulcanizing agent 2-5 parts, auxiliary crosslinking agent 1-4 parts and titanium dioxide 2-6 parts.The liquid chlorinated polyethylene and ethylene-propylene-diene rubber form co-crosslinking network under peroxide vulcanizing agent;The composite flame retardant is compounded by ammonium polyphosphate and melamine cyanurate;The surface modification of white carbon black and coupling agent occurs in the mixing process.The preparation method includes one-stage mixing, two-stage mixing and vulcanization.The blend realizes high flame retardancy while maintaining low hardness and high elasticity, and can be applied to mining products, electronic appliances and rail transportation field.

The application discloses a radiation crosslinking polyamide composite material and a preparation method and application thereof. The radiation crosslinking polyamide composite material comprises the following components in parts by weight: 50-70 parts of polyamide resin, 8-15 parts of melamine cyanurate, 0.5-5 parts of a composite crosslinking agent, 0.7-2.5 parts of a light stabilizer, 0.7-2.5 parts of an ultraviolet absorber and 0.05-2 parts of an antioxidant. The composite crosslinking agent comprises a first crosslinking agent and a second crosslinking agent in a mass ratio of (0.22-3.2):1. The first crosslinking agent is at least one of an isocyanuric acid allyl ester crosslinking agent and a melamine cyanurate allyl ester crosslinking agent. The second crosslinking agent is at least one of a vinyl crosslinking agent and an acrylic ester crosslinking agent. The application adds the specific composite crosslinking agent into the polyamide resin containing the melamine cyanurate flame retardant, and then crosslinks the polyamide resin through the radiation method, so that the prepared radiation crosslinking polyamide composite material still has good flame retardant performance and a high glowing filament temperature after long-time light aging.

The application relates to a biochar loaded zinc-iron layered double metal oxide composite material and a preparation method and application thereof, and belongs to the technical field of adsorption and separation. The preparation method of the biochar loaded zinc-iron layered double metal oxide composite material comprises four steps of preparing cross-linked coated melamine cyanurate, preparing a precursor mixed solution, preparing a precursor and carbonizing. The obtained biochar loaded zinc-iron layered double metal oxide composite material has a very high adsorption capacity for tetracycline antibiotic pollutants under the conditions of wide pH value fluctuation range and high-concentration impurity ions.

This invention discloses a polyamide composition, its preparation method, and its application, belonging to the field of polymer materials technology. The polyamide composition uses melamine cyanurate as a halogen-free flame retardant in the product, while compounding organic colorants with specific pH and introducing fluorescent whitening agents. This not only makes the flame retardant components of the product highly stable and less prone to thermal precipitation under thermal conditions, but also minimizes the color difference of the product after heating and baking. During mass production and processing, batch-to-batch color stability control can be achieved.

This invention discloses an 800V high tracking-free halogen-retardant flame-retardant reinforced plastic and its preparation method, belonging to the field of polymer materials technology. The plastic comprises a matrix resin of 30%-50%, selected from polyphenylene ether or polycarbonate, providing the material with basic mechanical properties and thermal stability; a halogen-free flame retardant of 15%-30%, composed of phosphorus-based flame retardants such as phosphate esters and phosphazene compounds, and nitrogen-based flame retardants such as melamine cyanurate, with a phosphorus-to-nitrogen weight ratio of 1.5:1 to 3:1, achieving a highly efficient halogen-free flame-retardant effect; and reinforcing fibers of 20%-40%, selected from glass fibers or carbon fibers. By adding tracking inhibitors such as nano-silica and layered silicates, this invention significantly improves the tracking index of the material under humid conditions, reaching a maximum of no less than 700V. This characteristic effectively enhances the insulation reliability of the material in complex electrical environments, reduces safety hazards caused by leakage, and is suitable for high-voltage electrical equipment fields with stringent electrical safety requirements.

An antibacterial, high-gloss, flame-retardant, and UV-resistant polypropylene composite material and its preparation method are disclosed. This invention relates to the field of polypropylene composite material technology. It is prepared from the following raw materials in parts by weight: 60-80 parts high-gloss polypropylene, 1-5 parts composite antibacterial agent, 5-15 parts halogen-free flame-retardant synergistic system, 0.5-3 parts UV-resistant compound system, 2-8 parts compatibilizer, and 0.1-1 parts lubricant. The composite antibacterial agent is a mixture of organic antibacterial agent, inorganic antibacterial agent, and dispersant. The halogen-free flame-retardant synergistic system is a mixture of phosphate ester flame retardant, melamine cyanurate, and modified nano-synergistic agent. The UV-resistant compound system is a mixture of UV absorber and hindered amine light stabilizer. Through innovative formula design and process optimization, the antibacterial, high-gloss, flame-retardant, and UV-resistant properties are simultaneously improved, while ensuring stable mechanical properties and excellent processing performance. The preparation process is simple and controllable, with moderate cost, meeting the needs of high-end applications such as outdoor building materials, high-end home appliance casings, and automotive interiors.

This invention discloses a halogen-free flame-retardant outer mold material for a data cable plug designed for salt spray testing, and its preparation method. The outer mold material comprises polypropylene resin, a toughening agent, an organosilicon-coated aluminum hypophosphite flame retardant, melamine cyanurate, a flame retardant synergist, a compatibilizer, an anti-aging agent, and a lubricant. This invention solves the problem of corrosion and blackening of the iron shell during salt spray testing of data cable plugs caused by the high water solubility and acidity of aluminum hypophosphite through organosilicon coating of the flame retardant. Simultaneously, the organosilicon-coated aluminum hypophosphite provides excellent scratch and abrasion resistance to the flame-retardant outer mold material.

This invention discloses a polyamide composition comprising, by weight, the following components: 55-80 parts of polyamide resin; 8-15 parts of melamine cyanurate; and 2-4 parts of chain extender. The polyamide resin is a blend of aromatic and aliphatic polyamide resins, and, based on the total weight percentage of repeating units in the polyamide resin, repeating units containing benzene rings account for 10-30 wt%; the concentration of terminal amines in the polyamide resin is 100-200 mmol / kg. The polyamide composition of this invention possesses advantages such as good flame retardancy, high temperature resistance, excellent dimensional stability, and chemical resistance, making it suitable for preparation in two core fields with stringent requirements for heat resistance, dimensional accuracy, and reliability: automotive (especially electrified and intelligent components) and electronic and electrical (especially miniaturized and high-frequency components).

The application relates to a biochar loaded zinc-iron layered double metal oxide composite material and a preparation method and application thereof, and belongs to the technical field of adsorption and separation. The preparation method of the biochar loaded zinc-iron layered double metal oxide composite material comprises four steps of preparing cross-linked coated melamine cyanurate, preparing a precursor mixed solution, preparing a precursor and carbonizing. The obtained biochar loaded zinc-iron layered double metal oxide composite material has a very high adsorption capacity for tetracycline antibiotic pollutants under the conditions of wide pH value fluctuation range and high-concentration impurity ions.

This invention discloses a halogen-free flame-retardant polypropylene material for lithium battery films, relating to the field of polymer composite materials technology. It comprises the following components by weight: 55-65 parts copolymer polypropylene; 20-30 parts ammonium polyphosphate; 5-15 parts melamine cyanurate; 2-5 parts nano-silica; 0.3-0.8 parts antioxidant 1098 / 168; and 0.5-2.0 parts silicone masterbatch. A method for preparing the halogen-free flame-retardant polypropylene material for lithium battery films includes the following steps: S001, polypropylene, APP, MCA, nano-SiO2, and antioxidant are added to a high-speed mixer in proportion and stirred at 150±5℃ for 10-15 minutes; S002, the mixture is added to a twin-screw extruder and melt-blended at a gradient temperature of 170-200℃, with the screw speed controlled at 300-500 rpm; S003, the melt is water-cooled, pelletized, and dried to obtain masterbatch. In this invention, the surface of nanoparticles is modified at 150°C using a silane coupling agent, thereby reducing the particle size of the aggregates from 500 nm to below 80 nm.

The present application relates to the technical field of building materials, in particular to a coal mine-used flame-retardant impact-resistant fiber-reinforced paving floor and a preparation method thereof.The paving floor comprises the following raw materials: modified glass fiber, modified inorganic filler, modified epoxy resin, curing agent, toughening agent and flame-retardant synergist.In the present application, the glass fiber is etched by phosphoric acid and loaded with a composite flame-retardant layer of aluminum hydroxide and zinc borate, thereby improving the interface bonding and flame-retardant efficiency.The coal gangue-based inorganic filler is gradually coated with a composite salt of magnesium chloride and aluminum sulfate and ammonium polyphosphate, thereby constructing a stable and flame-retardant synergistic reinforcing framework.The epoxy resin is blended and intercalated with ammonium polyphosphate, melamine cyanurate and magnesium hydroxide, thereby realizing the organic combination of solidified phase and gas phase flame retardation, so that the final product has excellent flame-retardant grade, high-efficiency smoke suppression, improved impact strength, good moisture resistance and corrosion resistance, and can adapt to the humid and frequently-vibrated environment of the coal mine underground roadway.

Thermally protected metal oxide varistor (TMOV) device comprising an MOV chip, a first electrode located on a first side of the MOV chip, a second electrode located on a second side of the MOV chip opposite the first side, an electrically conductive first conductor connected to the first electrode, a heat-absorbing layer connected to the second electrode by a heat-absorbing paste, wherein the heat-absorbing layer is formed from a mixture of silicon dioxide sand, melamine cyanurate and silicone and the heat-absorbing paste is formed from a mixture of melamine cyanurate and silicone, a thermal shutdown element (TCO) extending through a hole in the heat-absorbing layer and the first end of which is electrically connected to the second electrode by an amount of solder having a melting temperature,which is lower than the melting temperature of the TCO element, and an electrically conductive second conductor that is electrically connected to a second end of the TCO element.

The present invention aims to provide a moisture-curing composition that can yield a cured product with excellent properties, including flame retardancy and adhesive properties. [Solution] A moisture-curing composition comprising a urethane prepolymer U having isocyanate groups at its molecular ends, a latent curing agent L that generates an amine by hydrolysis, and a flame retardant F, wherein the flame retardant F comprises two or more different compounds. The flame retardant F comprises a compound M having a structure in which an amine having a triazine ring and a cyclic ketone are hydrogen-bonded, and a phosphate ester compound C having a viscosity of 1 mPa·s to 500 mPa·s at 25°C. The phosphate ester compound C mainly consists of tris(2-chloro-1-methylethyl) phosphate, trixylenyl phosphate, or trioctyl phosphate. The compound M mainly consists of melamine cyanurate.

This application discloses a homogeneous anion-selective exchange membrane and its preparation method, belonging to the field of exchange membrane technology. The preparation method includes: adding a branching agent to an aqueous caprolactam solution, heating to a fixed temperature, undergoing a hydrolysis ring-opening polymerization reaction, and post-treatment to obtain a hyperbranched nylon resin-based membrane resin; extruding and stretching the hyperbranched nylon resin-based membrane resin into a film to obtain a homogeneous anion-selective exchange membrane; wherein the branching agent is one or a mixture of several of the following in any proportion: an amino-terminated derivative of trimethylolpropane tripropylene glycol ether, melamine cyanurate, etc. The homogeneous anion exchange membrane obtained in this application exhibits excellent selective adsorption and migration exchange capabilities, demonstrating excellent rapid kinetics during ion exchange.

This invention discloses a highly insulating and low-hygroscopic thermal aerosol fire extinguishing agent and its preparation method, relating to the field of lithium-ion battery fire extinguishing agent technology. The key technical points include a redox system based on strontium nitrate and nitroguanidine, combined with a specific proportion of ammonium polyphosphate-melamine cyanurate-nano silica composite flame retardant, and the introduction of an additive. This additive is prepared by loading a mixture of methyltrimethoxysilane and octyltriethoxysilane onto a tin-doped mesoporous silica carrier. The effect is that when the fire extinguishing agent is released, the silane in the additive rapidly forms a highly insulating and hydrophobic siloxane network covering layer under the catalysis of tin ions. Simultaneously, the synergistic effect of the formulation and carrier structure endows the product with low hygroscopicity, ensuring stable performance in humid environments.