122 results about "Halogen free" patented technology

The invention relates to the field of battery materials, in particular to a halogen-free electrolyte for a magnesium metal battery and a preparation method of the halogen-free electrolyte. The magnesium salt comprises at least one of bis (trifluoromethanesulfonyl) imide magnesium and magnesium trifluoromethanesulfonate; the additive is prepared from at least one of indole, 3-azaindole, 4-azaindole, 5-azaindole, 6-azaindole, 4-amino indole, 5-amino indole, 6-amino indole and 7-amino indole; the organic solvent comprises ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1, 3-dioxolame or 1, 3-dioxane. The preparation method comprises the following steps: sequentially adding the magnesium salt and the additive into the organic solvent, and stirring and reacting at room temperature for 1 min to 24 h to obtain the halogen-free electrolyte for the magnesium metal battery. And the prepared electrolyte has excellent performances of small overpotential, long service life and wide electrochemical window, and has a good commercial application prospect.

The invention belongs to the field of composite ink coatings, and particularly discloses a high-thermal-conductivity and high-adhesiveness copper foil coating ink coating as well as a preparation method and application thereof. The ink coating is prepared from the following components in parts by weight: 15 to 25 parts of epoxy resin, 10 to 20 parts of polyurethane resin, 5 to 12 parts of modified cellulose, 30 to 45 parts of heat-conducting filler, 8 to 15 parts of aliphatic polyisocyanate curing agent, 20 to 35 parts of solvent, 2 to 5 parts of silane coupling agent and 0.5 to 3 parts of pigment. The modified cellulose is prepared by modifying halogen-free betaine hydroxide, and can cooperate with the double-resin matrix to enhance the interface bonding force and construct a three-dimensional heat-conducting network. After the surface of an electrolytic or rolled copper foil is coated with the ink coating, the heat conductivity coefficient of the coating is larger than 0.4 W / (m.K), the dyne value is larger than 38, the cross-cut test is larger than or equal to 4B, alcohol wiping resistance is achieved, falling is avoided, the color difference delta E is smaller than 1, and the ink coating is suitable for a high-frequency circuit substrate and a lithium battery current collector.

The invention discloses an LDH-GO synergistically-reinforced flame-retardant polyolefin thermal management composite material, a preparation method and application, and belongs to the technical field of composite materials. The LDH-GO synergistically reinforced flame-retardant polyolefin thermal management composite material is prepared from the following raw materials in parts by mass: 80 to 95 parts of co-polypropylene, 5 to 20 parts of LDH-GO flame retardant, 2 to 5 parts of compatilizer, 0.1 to 0.3 part of antioxidant, 0.1 to 0.3 part of lubricant and 0.1 to 0.5 part of light stabilizer. Through a synergistic flame retardant mechanism of LDH and GO, the flame retardant property of the material is remarkably improved; the LDH is heated and decomposed to release H2O and CO2, the combustible gas is diluted, and the base body is cooled; gO forms a compact carbon layer during combustion to isolate heat and oxygen; and no halogen is added, the combustion smoke release amount is remarkably reduced, and the environmental protection property is superior to that of a traditional halogen flame retardant.

The invention discloses a halogen-free bio-based flame-retardant polyester polyol, which is prepared by mixing sec with monobasic acid and binary acid, the polyester polyol with moderate crosslinking degree can be prepared by using the cyclic structure of sec and the trifunctional hydroxyl structure of sec, and the prepared flame-retardant polyester polyol has excellent performance in a V-0 grade flame-retardant test. The dependence on a toxic flame retardant is also reduced; in addition, the cyclic structure and high nitrogen content of sec-cyan help to form a more compact cross-linked network after the material is formed, the material is endowed with better tensile strength and heat resistance, and mechanical properties and flame retardant effect are both considered. Wherein part of trimethylolpropane can be used for replacing siroc, so that the cost and the performance are both considered. The invention also provides application of the halogen-free bio-based flame-retardant polyester polyol. The halogen-free bio-based flame-retardant polyester polyol and isocyanate are mixed to prepare a polyurethane material.

The invention relates to the technical field of cables, and provides a polyethylene low-smoke halogen-free flame-retardant power cable which comprises a conductor, an insulating layer, a sheath layer, a halogen-free flame-retardant layer, a flame-retardant filling material and a cooling assembly, the insulating layer wraps the conductor, the halogen-free flame-retardant layer is arranged outside the insulating layer, and the sheath layer wraps the sheath layer. The halogen-free flame-retardant layer is wrapped by the sheath layer, the portion between the halogen-free flame-retardant layer and the insulating layer is filled with the flame-retardant filling material, the multiple cooling assemblies are arranged outside the sheath layer and used for cooling the sheath layer, and each cooling assembly comprises two cold water rings and a cold water plate. The cold water rings are detachably arranged outside the sheath layer, the cold water plate is arranged between the two cold water rings, the cold water plate is communicated with the cold water rings, and the cold water plate is in contact with the outside of the sheath layer. According to the technical scheme, the problem that a halogen flame retardant in the prior art is only suitable for low-temperature flame retardance and is difficult to meet the flame retardance requirement of the cable at high temperature is solved.

The invention discloses a nylon composite material as well as a preparation method and application thereof, and belongs to the technical field of modified polymer composite materials. The nylon composite material comprises the following components in percentage by weight: 51%-61% of PA66 resin; 25%-30% of a halogen-free flame retardant glass fiber; 10%-18% of a flame retardant; 0.3%-0.6% of an antioxidant; 0.3%-0.6% of an efficient flow modifier; wherein the efficient flow modifier is selected from high molecular weight hyperbranched polyester containing aromatic groups. Through the combined action of the halogen-free flame-retardant glass fiber and the efficient flow modifier, the nylon composite material is excellent in mechanical property and flame retardant property, good in apparent quality, low in flame retardant content and low in cost, and the preparation method of the nylon composite material is simple, high in operability, wide in applicability and suitable for industrial production. The preparation process is halogen-free and more environment-friendly.

The invention discloses a high-temperature-resistant fireproof flexible cable and a preparation method thereof, and belongs to the technical field of fireproof cables, the high-temperature-resistant fireproof flexible cable comprises a first outer sheath, the inner wall of the first outer sheath is provided with a second outer sheath, and the inner wall of the second outer sheath is provided with an armor. The first outer sheath, the third outer sheath, the fourth outer sheath and the fifth outer sheath are designed and are all made of magnesium-containing flame retardant materials, in a magnesium-containing flame retardant performance test, flame spread is low, the released total heat value is low, the tensile strength is high, the smoke density is low, and at the high temperature, magnesium in the magnesium-containing flame retardant can release water due to the chemical characteristic, so that the flame retardant performance is improved. The cable is good for reducing the combustion temperature and inhibiting flame propagation, and has relatively strong fire resistance and high temperature resistance, and when the first outer sheath is combusted, the magnesium-containing flame retardant is generally halogen-free, generates less harmful gas, and is more environment-friendly.

The utility model relates to high polymer material processing equipment technical field, concretely relates to a kind of efficient mixing device of halogen-free engineering plastics carbon black, including double-screw extruder main body and the die head of being installed in the output end of double-screw extruder main body, channel is opened in die head and is communicated with the extrusion cavity of double-screw extruder main body, the top and bottom of die head are all penetrated channel and are equipped with jack, two jacks are jointly inserted with the mounting plate that can slide up and down, several square holes that are equally spaced distribution are penetrated and equipped on the mounting plate, several square holes are all detachably installed with filter screen, several filter screens are all vertical and filled with entire flow channel, by lifting electric cylinder drive mounting plate up and down sliding, different filter screen can be switched in non-stop state, avoid the cumbersome operation of traditional screen change and need to stop die head disassembly, improve production efficiency, multiple square filter screens are vertically arranged, increase filtration area, extend jamming time, suitable for high-filled carbon black formula.

The invention discloses high-temperature halogen-free soldering flux, solder paste and a preparation method. The high-temperature halogen-free soldering flux comprises 30%-50% of a high-boiling-point solvent, 30%-40% of rosin, 1%-8% of modified thermoplastic resin, 5%-10% of an active agent, 0.5%-1.0% of a modified surfactant, 4%-8% of a thixotropic agent, 0.5%-3% of metal salt and 3%-5% of an antioxidant. The solder paste comprises 85%-88% of lead-free metal alloy powder and 12%-15% of high-temperature halogen-free scaling powder. Weighing an organic solvent, adding into a container, and heating to 80-95 DEG C; adding the thixotropic agent and uniformly stirring; the temperature is reduced to 60-70 DEG C, rosin, modified thermoplastic resin, an active agent, metal salt, an antioxidant and a modified surfactant are weighed and added, constant-temperature stirring is conducted till dissolution is achieved, bubbles in the scaling powder are discharged, the scaling powder is taken out and cooled into paste, the materials are ground, and the high-temperature halogen-free scaling powder is obtained.

Embodiments in accordance with the present invention encompass compositions containing the polymer formed from a variety of polycycloolefinic monomers at least one of which monomer contains an additional unpolymerized ethylenic bond, melamine, clay such as bentonite or montmorillonite, optionally fillers such as hexagonal boron nitride or silica, a crosslinker, a free radical initiator, a tackifier and one or more suitable additives. The compositions of this invention can be formed into a variety of three-dimensional insulating articles upon exposure to suitable high temperature, such as for example films. The objects formed from the compositions of this invention exhibit hitherto unattainable low dielectric constant and low-loss properties, fire-retardancy and very high thermal properties. The compositions of this invention are useful in various applications, including as insulating materials in millimeter wave radar antennas, among others. The films formed from the compositions of this invention exhibit a UL-94 rating of at least V-1, dielectric constant (Dk) less than 2.9 and dielectric dissipation factor (Df) of less than 0.003.

The present invention provides flexible and integral skin-containing polyurethane foams and two-component foam forming compositions for making them that comprise an aromatic polyisocyanate component, such as a methylene di(phenyl isocyanate), and a polyol component of an autocatalytic aliphatic polyether polyol and a melt modifying catalyst, such as potassium acetate, that exhibit excellent inherent flame retardant properties, passing exacting tests prescribed by the UN / ECE 118.02, Annexes 6, 7 and 8. The foam forming compositions may be all liquid and thus readily processible. Further, the two-component foam forming compositions and the polyurethane foams therefrom are halogen and melamine free and exhibit low emissions and low odor.

The disclosed and claimed subject matter relates to selective thermal atomic layer etching with a novel series of halogen-free organic acids cycled with an oxidant as a co-reactant to etch metals.

Halogen-free phosphorus-containing flame retardant resins are disclosed. The halogen-free phosphorus-containing flame retardant resin is mixed with a metal oxide to form a modified halogen-free phosphorus-containing flame retardant. The modified halogen-free phosphorus-containing flame retardant composition can be used for electronic equipment.

There is provided a technique that includes: supplying a film formation inhibition gas to the substrate, which includes a first base and a second base on a surface of the substrate, to form a film formation inhibition layer on a surface of the first base; supplying a film-forming gas to the substrate after forming the film formation inhibition layer on the surface of the first base, to form a film on a surface of the second base; and supplying a halogen-free substance, which chemically reacts with the film formation inhibition layer and the film, to the substrate after forming the film on the surface of the second base, in a non-plasma atmosphere.

The invention relates to the technical field of flame-retardant materials, in particular to a light-weight secondary-processing-free top plate flame-retardant material for a passenger car. According to the invention, various flame retardants are used to generate a synergistic effect, the chemical stability, the mechanical strength and the electrical insulation property are relatively high, halogen free radicals are released at a high temperature, active free radicals in a combustion reaction are captured, a free radical chain reaction of combustion is inhibited, and a protective film is formed on the surface of the material to isolate air; the combustion temperature is reduced through an internal endothermic reaction, the coating is oxidized in a high-temperature state, the oxygen concentration in air is reduced, and a flame-retardant effect is achieved, titanium dioxide can make the coating have good covering power and decoration performance, calcium carbonate can increase the volume and thickness of the coating, and the mechanical strength and wear resistance of the coating are improved; the iron oxide yellow can endow the coating with specific colors and functions such as rust prevention and corrosion prevention, so that the flame retardant effect of the passenger car roof is improved, secondary processing is not needed, the mass of the passenger car roof is reduced, and the purpose of light weight is achieved.

The invention relates to the field of flame-retardant modified polyolefin master batch materials, in particular to a halogen-free flame-retardant master batch as well as a preparation method and application thereof. The halogen-free flame-retardant master batch is prepared from carrier resin, a halogen-free flame-retardant system, a coupling-dispersing composite additive, a small amount of antioxidant, a small amount of lubricant and a small amount of nucleating agent, and the creativity of the halogen-free flame-retardant master batch can be expanded and highlighted through the synthesis direction of epoxy acrylic resin. A halogen-free flame-retardant system formed by surface activation of aluminum diethylhypophosphite, coating of ammonium polyphosphate microcapsules, nano layered barrier modification of montmorillonite and matching of melamine polyphosphate can be uniformly distributed in carrier resin, and the flame-retardant protection performance of a plastic product can be effectively improved under the condition of low filling amount; the method is simple in process, low in energy consumption and suitable for flame-retardant modification of films, fibers, injection molding products and extruded products.

The invention discloses an epoxy adhesive for an IC (integrated circuit) packaging box dam and a preparation method of the epoxy adhesive. The epoxy adhesive comprises the following raw material components in percentage by mass: 7.5-10% of epoxy resin; 10 to 15% of polycarbonate polyol; 10-15% of an active epoxy toughening agent; 0.5-1.0% of a curing agent; 1-3% of a silane coupling agent; 1-3% of an inorganic thixotropic agent; and 60-70% of a spherical silicon dioxide filler. By adopting the raw material components with specific types and contents, the adhesive with higher Tg and lower CTE can be obtained, and the adhesive is suitable for high-frequency / high-temperature application (such as an automobile radar chip); the halogen-free and low-volatility (VOC) formula conforms to the European Union RoHS / REACH regulations; moreover, the adhesive can meet the properties of high adhesion, low stress, rapid curing and the like, and can meet the long-term aging property (such as 85 DEG C / 85% RH (Ruhrstahl Heraeus) test).

The invention discloses a preparation method of halogen-free epoxy resin, which comprises the following step: carrying out nucleophilic substitution reaction on a compound shown in a formula I and a compound shown in a formula II under the action of a catalyst to prepare epoxy resin shown in a formula III. The method disclosed by the invention is simple to operate, the post-treatment does not need complicated halogen removal and purification operation, and the prepared halogen-free epoxy resin material is free of halogen residues, extremely high in purity, free of residual phosphate raw materials, free of corrosion of circuits and electronic devices and capable of being applied to the field of advanced electronic packaging. # imgabs0 #

The invention discloses a low-carbon halogen-fire-free safe polyolefin material and a preparation method thereof, and belongs to the technical field of new energy fireproof safe materials, and the low-carbon halogen-fire-free safe polyolefin material comprises polyolefin resin, a compatilizer, surface modified silicate powder, a fluxing agent, a flame retardant, an antioxidant and a surface modified biomass material. The polyolefin surface modified material provided by the invention is free of halogen and heavy metal in the whole course, meets the standard of green materials, is harmless to the environment and human bodies, has the characteristics of safety, environmental protection, flame retardance and fire prevention, can resist flame in the initial stage in a combustion environment, can form a ceramic shell layer on the outer layer of the material in continuous flame ablation, plays a role in fire prevention, and has a good application prospect. The metal ions loaded on the surface of the silicate powder can be catalyzed into carbon through the metal ions to further cooperate with the silicate powder to improve the flame retardant property of the material; the flame-retardant component grafted or coated on the surface of the biomass material can further improve the continuous flame-retardant property of the material on the basis of improving the dispersing property of the biomass material.

The application belongs to the field of composite ink coating, and particularly discloses a high-thermal-conductivity and high-adhesion copper foil coating ink, a preparation method and application thereof.The ink coating comprises, by weight, 15-25 parts of epoxy resin, 10-20 parts of polyurethane resin, 5-12 parts of modified cellulose, 30-45 parts of thermal-conductivity filler, 8-15 parts of aliphatic polyisocyanate curing agent, 20-35 parts of solvent, 2-5 parts of silane coupling agent and 0.5-3 parts of pigment.The modified cellulose is prepared by modification of halogen-free betaine hydroxide, can synergize with the double-resin matrix to enhance the interface bonding force and build a three-dimensional thermal-conductivity network.After the ink coating is coated on the surface of electrolytic or calendered copper foil, the thermal conductivity coefficient of the coating is greater than 0.4 W / (m·K), the darcy value is greater than 38, the crosshatch test is greater than or equal to 4B, there is no peeling after alcohol wiping, the color difference ΔE is less than 1, and the ink coating is suitable for high-frequency circuit substrates and lithium battery current collectors.

The utility model relates to the technical field of synthetic leather, and discloses flame-retardant environment-friendly synthetic leather, which comprises synthetic leather base cloth, a water-based flame retardant coating, a solvent-free polyurethane layer, a polyurethane middle layer and a polyurethane surface layer, the solvent-free polyurethane layer is attached to the upper end face of the water-based flame retardant coating, the polyurethane middle layer is smeared on the upper end face of the solvent-free polyurethane layer, and the polyurethane surface layer is arranged on the upper end face of the polyurethane middle layer in a blade coating mode. According to the flame-retardant environment-friendly synthetic leather, the addition of organic solvents is greatly reduced from the raw materials and the formula, so that the harm of the organic solvents to the health of workers in the production process is reduced, almost half of human resources are saved, and the used flame retardant is also an environment-friendly halogen-free flame retardant, so that the harm to human bodies is smaller, and the flame-retardant effect is better.

This invention provides a method for preparing a halogen-free PETG label film, belonging to the field of label film preparation technology. The method includes: corona treatment of a PETG substrate layer; coating the substrate surface with a halogen-free functional coating liquid containing waterborne polyurethane acrylic composite resin, nano-inorganic modifier, and crosslinking agent; bonding the coated substrate layer and the halogen-free adhesive layer together and then sending them into a curing oven, where the functional coating and the interlayer bonding with the adhesive layer are simultaneously completed under segmented programmed temperature rise conditions, resulting in physical entanglement and chemical crosslinking at the interface; and finally, cooling and shaping to obtain the label film. This invention significantly enhances the interlayer bonding strength through a simultaneous curing and composite process. The resulting product has a light transmittance ≥91%, haze ≤2.5%, peel strength ≥8N / 25mm, and performance retention ≥90% after damp heat aging. Furthermore, the chlorine and bromine content are both ≤900ppm, meeting the halogen-free standard.

The application provides a water-based flame-retardant ink for a PET film and a preparation method thereof and the PET film, and belongs to the technical field of paints. The water-based flame-retardant ink comprises a first component and a second component. The first component comprises 40-80wt% of a water-dispersed halogen-free modified polyester resin, 20-40wt% of a water-dispersed halogen-free flame-retardant additive, 5-10wt% of a quick-drying solvent, 0.3-0.5wt% of a defoaming agent, 0.3-0.5wt% of a wetting and leveling agent, 5-10wt% of a film-forming additive, 0.5-2wt% of an alkali-soluble anionic thickener and 5-10wt% of an anti-gloss additive. The second component comprises 40-70wt% of a water-dispersed crosslinking agent and 30-60wt% of an ester solvent. The mass ratio of the first component to the second component is 100:(3-10). The application can solve the compatibility problem of direct adhesion of the PET film and the flame retardation, and has no halogen emission and a long paint activation period.

The present invention provides a polymer composition comprising: a first ethylene-based polymer having a crystallinity of 25 wt% or more at 110°C as measured according to the Crystallinity Test; a second ethylene-based polymer having a crystallinity of 40 wt% or less at 23°C as measured according to the Crystallinity Test; and 40 wt% or more of a halogen-free flame retardant filler.

A polyamide composition comprising a polyamide; a plurality of inorganic fibers; and a flame retardant system is disclosed. At a thickness of 0.8 mm, the composition exhibits a Glow Wire Ignition Temperature of about 775° C. or more as determined in accordance with IEC-60695-2-13:2010.

Currently, due to their inherent flammability, polyurethane reinforcement grouting materials for coal mines typically incorporate halogen-containing flame retardants during their preparation to enhance their flame-retardant properties. However, polyurethane materials containing these flame retardants remain in the finished coal, potentially causing catalyst poisoning in coal chemical production. Furthermore, halogen-containing flame retardants exhibit high smoke production and highly toxic fumes when exposed to open flames, posing a significant risk of injury to personnel. This invention addresses these drawbacks by adding our company's DMMP microcapsules and powder dispersant to the system and adjusting the formulation, thus preparing a halogen-free polyurethane reinforcement material for reinforcing coal and rock masses in coal mines. This material overcomes the aforementioned drawbacks and possesses significant practical application value.

Embodiments in accordance with the present invention encompass compositions containing a blend of polymers formed from a variety of polycycloolefinic monomers at least one of which monomer contains an olefinic functionality and another monomer contains an anhydride functionality, melamine, montmorillonite and optionally other fillers such as silica, a crosslinker, a free radical initiator, a tackifier and one or more suitable additives. The compositions of this invention can be formed into a variety of three-dimensional insulating articles upon exposure to suitable high temperature, such as for example films. The objects formed from the compositions of this invention exhibit hitherto unattainable low dielectric constant and low-loss properties, fire retardancy and very high thermal properties. The compositions of this invention are useful in various applications, including as insulating materials in millimeter wave radar antennas, among others. The films formed from the compositions of this invention exhibit a UL-94 rating of at least V-1, dielectric constant (Dk) less than 2.8 and dielectric dissipation factor (Df) of less than 0.002.

The invention discloses a preparation method and application of a halogen-free flame retardant, and the preparation method comprises the following steps: S1, mixing 3, 5-diamino triazole with thiophene-2-formaldehyde, adding a DOPO solution, and reacting to obtain a phosphaphenanthrene flame retardant; s2, mixing the phosphaphenanthrene flame retardant with copper molybdate, and performing ultrasonic oscillation to obtain a phosphaphenanthrene-copper molybdate compound; s3, reacting the CNTs with an oxidizing agent to obtain F-CNTs of which the surface contains carboxyl or hydroxyl; s4, the phosphaphenanthrene-copper molybdate compound, F-CNTs and titanium dioxide are subjected to ultrasonic mixing, and a halogen-free flame retardant is obtained; according to the invention, the phosphaphenanthrene flame retardant is generated through reaction of the phosphaphenanthrene flame retardant and DOPO, and the flame retardant property is improved through gas-phase flame retardance and carbon layer formation; the copper molybdate loaded phosphaphenanthrene flame retardant can improve the synergistic flame retardant effect of the material; the functionalized CNTs can enhance the hydrophilicity, dispersity and mechanical property of the composite material; the flame retardant has the beneficial effects of high thermal stability, good flame retardant effect and the like.

The invention provides water-based flame-retardant ink for a PET (Polyethylene Terephthalate) film, a preparation method of the water-based flame-retardant ink and the PET film, and belongs to the technical field of coatings. Comprising a first component and a second component, wherein the first component is prepared from the following components in percentage by mass: 40 to 80 weight percent of water-dispersed halogen-free modified polyester resin, 20 to 40 weight percent of water-dispersed halogen-free flame-retardant aid, 5 to 10 weight percent of quick-drying solvent, 0.3 to 0.5 weight percent of defoaming agent, 0.3 to 0.5 weight percent of wetting flatting agent, 5 to 10 weight percent of coalescing agent, 0.5 to 2 weight percent of alkali-soluble anionic thickener and 5 to 10 weight percent of matting aid; the second component comprises the following components in percentage by mass: 40-70wt% of a water dispersible cross-linking agent and 30-60wt% of an ester solvent; the mass ratio of the first component to the second component is 100: (3-10). According to the invention, the compatibility problem of direct adhesion of a PET film and flame retardance can be synergistically solved, no halogen is discharged, and the activation period of the coating is long.