14 results about "Brominated flame retardant" patented technology

This invention discloses a flame-retardant PBT composite material, comprising the following components by weight: 40-73 parts PBT; 0.8-3.2 parts alkali lignin; 13-18 parts brominated flame retardant; 3-5 parts antimony trioxide; and 0.5-1 parts pentaerythritol. The weight-average molecular weight of the alkali lignin is 3000-10000. By selecting alkali lignin and pentaerythritol with specific molecular weights and using antimony trioxide as a laser color developer, this invention can effectively improve the laser marking defects of PBT composite materials modified with brominated flame retardants and has the advantage of thin-walled flame retardancy.

The application discloses a method for degrading brominated organic pollutants in water by using UV / H2O2, and first establishes a high-level oxidation treatment method for brominated pollutants in water by combining UV and H2O2, determines the initial concentration of the brominated pollutants and the adding proportion of the oxidant H2O2 by using absorbance, Lambert-Beer law and the principle of absorbance additivity, and verifies the rationality of the concentration settings of the brominated pollutants and the oxidant in the kinetics evaluation, and further establishes a detection method for bromide ions, which, compared with the traditional ion chromatography method, does not need an additional pretreatment process, avoids the matrix interference of coexisting organic matters, and greatly saves the experimental and instrument use costs; for the identification of degradation products, the method established by the application accurately detects the evolution trend of more than twenty structural molecules in the examples along with the treatment process, and the method can be widely applied to the wastewater treatment of brominated flame retardants, brominated phenols and other bromine-containing organic matters in the environment.

The present invention provides a water-based dispersion-type flame retardant that exhibits flame retardant effects equivalent to or better than those of both DBDPE and antimony trioxide, even when using small amounts or none of both compounds. [Solution] The present invention relates to an aqueous dispersion type flame retardant comprising a flame retardant component dispersed in an aqueous solvent, characterized in that (1) the flame retardant component comprises (1a) a metal salt of dialkylphosphinic acid and (1b) a brominated flame retardant component having a melting point of 150°C or less (excluding the metal salt), and (2) the ratio of the metal salt to the brominated flame retardant component is such that, with the total of both being 100% by weight, the ratio of metal salt:brominated flame retardant component = 90% by weight:10% by weight to 40% by weight:60% by weight.

This invention discloses a polyester composition, its preparation method, and its applications, belonging to the field of polymer materials technology. It comprises the following components by weight: 48-88 parts polyester resin, 4-22 parts brominated flame retardant, 0.8-9 parts antimony flame retardant, 0.5-9 parts hydroxyapatite, 6-38 parts glass fiber, and 0-4 parts additives; the glass fiber has a retention length of 150-350 μm. Using polyester resin as a matrix, this invention, through the combined action of brominated flame retardant, antimony flame retardant, hydroxyapatite, and glass fiber, yields a polyester composition with excellent tracking properties and impact strength. The polyester composition also exhibits a good appearance and is suitable for manufacturing electronic and electrical components, particularly connectors, relays, and switches, showing broad application prospects.

This invention provides a corrosion-resistant PMMA / ABS composite material and its preparation method, relating to the field of polymer materials technology. The composite material provided by this invention comprises, by weight, 50-80 parts PMMA matrix, 40-80 parts ABS matrix, 5-10 parts brominated flame retardant, 5-10 parts toughening agent, 2-5 parts compatibilizer, 0.1-1 part lubricant, 0.1-1 part antioxidant, 0.1-1 part weathering agent, and 3-5 parts corrosion-resistant filler; wherein the corrosion-resistant filler includes nano-modified silica and nano-modified antimony pentoxide. The composite material provided by this invention exhibits excellent acid and alkali corrosion resistance and good mechanical properties, while the flame-retardant performance is improved by combining nano-modified antimony pentoxide with the brominated flame retardant.

This application discloses an ABS composite material, its preparation method, and molded parts, belonging to the field of polymer materials technology. This application achieves good flame retardancy by adding specific toughening agents, dialkyl-substituted phosphinates, monoalkyl-substituted phosphinates, and brominated flame retardants to ABS resin, and controlling the dosage of each component within a specific range. Simultaneously, the resulting composite material exhibits good flame retardancy, and the finished parts have a good appearance after painting, making it suitable for exterior parts of home appliances, two-wheeled electric vehicles, and other products.

This invention relates to the field of electronic circuit board materials technology, and particularly to a brominated flame retardant modified epoxy resin, a glass cloth prepreg made therefrom, and a preparation method thereof. A brominated flame retardant modified epoxy resin comprises the following raw materials in parts by weight: 35-45 parts of biphenyl-type epoxy resin, 35-45 parts of high molecular weight brominated epoxy resin, 5-8 parts of dicyandiamide, 0.5-2 parts of potential accelerator, 8-15 parts of a composite flame retardant synergistic system, 3-6 parts of terminal epoxy group polydimethylsiloxane, 1.5-3 parts of surface-treated silane-coated hollow glass microspheres, 0.2-0.8 parts of silane coupling agent, 0.3-1.0 parts of leveling agent, organic solvent, and surface-treated silane-coated boron nitride nanoparticles. A bromine-containing flame retardant modified epoxy resin was prepared by a process of pre-dispersing slurry, graded dispersion, and low-temperature addition of curing agent; the resulting glass cloth prepreg has excellent flame retardant, mechanical and thermal conductivity properties, and has a smooth and defect-free surface, good thickness uniformity and excellent storage stability.

This invention belongs to the field of polymer materials technology, and specifically relates to a flame-retardant masterbatch, a polypropylene composite material, its preparation method, and its application. The flame-retardant masterbatch of this invention comprises a propylene-based elastomer, a flame retardant, and additives. This invention uses a propylene-based elastomer and a mixing process to first prepare the flame-retardant masterbatch. Then, polypropylene, specific types of toughening agents, brominated flame retardants, flame retardant synergists, and the flame-retardant masterbatch are used to prepare the polypropylene composite material. This results in a polypropylene composite material with excellent mechanical properties and flame-retardant effects, and the extruded cast film exhibits high voltage breakdown resistance.

An insulated wire includes a conductor and an insulating layer covering the conductor. The insulating layer is formed of a composition comprising a first component, a second component, a brominated flame retardant, and zinc oxide. The first component is composed of a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer. The second component is composed of at least one selected from the group consisting of magnesium oxide, calcium carbonate, and hydrotalcite. In the composition, the mass ratio M2 of the ethylene-tetrafluoroethylene copolymer to the mass M1 of the tetrafluoroethylene-propylene copolymer is M2 / M1, which is 10 / 90 or more and 40 / 60 or less. In the composition, the content of the brominated flame retardant is 1.0 part by mass or more and 40 parts by mass or less relative to 100 parts by mass of the first component. In the composition, the content of the zinc oxide is 1.0 part by mass or more and 25 parts by mass or less relative to 100 parts by mass of the first component. In the composition, the total content of the second component is 5.0 parts by mass or more and 50 parts by mass or less relative to 100 parts by mass of the first component.

This invention discloses a polypropylene composition, its preparation method, and its application. The polypropylene composition comprises the following components by weight: 25-55 parts polypropylene, 15-30 parts brominated flame retardant, 3-10 parts antimony trioxide, 2-8 parts phosphorus-based flame retardant, 2-5 parts piperazine-based flame retardant, 1-3 parts mica, 10-30 parts glass fiber, and 2-4 parts compatibilizer; wherein the mica has a diameter-to-thickness ratio of (28-65):1. This invention, by adding phosphorus-based flame retardant, piperazine-based flame retardant, mica, and brominated flame retardant to a glass fiber reinforced polypropylene system, can effectively improve flame retardant properties and resistance to xenon lamp aging.

The present invention relates to flame retardant compositions and polymer-brominated flame retardant compositions for use in wires and / or cables. The brominated flame retardants contain aromatically linked bromine and, in some embodiments, are considered to be brominated styrene-based polymers. The brominated flame retardants have a weight-average molecular weight (Mw) of about 650 to about 75,000 and a bromine content of about 60% by weight or more. The present invention further relates to a process for forming a flame retardant composition, the process comprising: a first step, a second step, extruding the mixture from the first step to coat wires and / or cables; and a third step, exposing the mixture from the first step to either or both of a heating and / or external moisture to allow the product to reach a desired degree of crosslinking. The process comprises: a first step, a second step, extruding the mixture from the first step to coat wires and / or cables; and a third step, exposing the mixture from the first step to either or both of external moisture to allow the product to reach a desired degree of crosslinking.

A method for removing bromine from copper powder resource recycling products and a method for manufacturing regenerated copper, wherein the method for removing bromine from copper powder resource recycling products comprises the following steps: obtaining a copper powder resource recycling product comprising brominated flame retardants; performing a thermal cracking process on the copper powder resource recycling product at a process temperature and a process time, so that the copper powder resource recycling product is heated to generate exhaust gas generated from the brominated flame retardants; and performing a chemical reaction between a mixed catalyst and the exhaust gas, wherein the mixed catalyst comprises an iron-containing catalyst and a calcium-containing catalyst. In this way, hydrogen bromide and tetrabromobisphenol A can be removed simultaneously.

The invention relates to a flame retardant composition and a macromolecular brominated flame retardant composition used in wires and / or cables. The brominated flame retardant contains aromatic bound bromine, and in several embodiments is considered as a brominated styrenic polymer. The brominated flame retardant has a weight average molecular weight (Mw) of about 650 to about 75,000 and a bromine content of about 60 wt% or more. The invention also relates to a process for forming a flame retardant composition using different curing methods, including but not limited to electron beam curing and peroxide curing.

The present invention relates to flame-retardant compositions for wires and / or cables, as well as polymeric brominated flame-retardant compositions. Brominated flame retardants contain aromatically bonded bromine and, in some embodiments, are determined to be brominated styrene polymers. Brominated flame retardants have a weight-average molecular weight (Mw) of about 650 to about 75,000 and a bromine content of about 60 wt% or more. The present invention further relates to processes for forming flame-retardant compositions using different curing methods, including but not limited to electron beam and peroxide curing.