41 results about "Comparative Tracking Index" patented technology

The present invention relates to a composition containing A) 60 to 93 wt. % of at least one aromatic polycarbonate, polyester carbonate or mixtures thereof, B) 2 to 20 wt. % of a polyester on the basis of an aromatic or cycloaliphatic dicarboxylic acid or mixtures thereof and cyclohexane dimethanol and optionally an additional aliphatic diol, and C) 1 to 20 wt. % of at least one phosphorus-containing flame retardant. The invention also relates to a component that contains the composition and to the use of components B and C in the indicated quantities in order to improve CTI and flame retardancy of polycarbonate compositions.

The invention discloses a high-CTI (comparative tracking index) flame-retardant polycarbonate composite material which comprises the following components in parts by weight: 70-80 parts of polycarbonate; 8-12 parts of a phosphate flame retardant; 3-7 parts of low-melting-point glass powder; 7-15 parts of titanium dioxide; and more than or equal to 80 mol% of end groups in the polycarbonate are terminated. Through cooperation of the phosphate flame retardant, the low-melting-point glass powder and the titanium dioxide, 1.5 mm V-0 flame retardance and even 1.0 mm flame retardance can be achieved on the premise that fluorine-containing anti-dripping agents such as PFAS are not contained and low filler filling is achieved, and meanwhile the CTI larger than or equal to 600 V is achieved.

The invention discloses a high-CTI (comparative tracking index) halogen-free flame-retardant PA66 (polyamide 66) composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material comprises the following components in parts by weight: 52-64 parts of PA66 resin, 20-30 parts of glass fibers, 12-15 parts of a phosphorus-based flame retardant, 0.5-1.5 parts of a flame-retardant synergist, 0.3-0.7 part of a lubricant and 0.1-0.5 part of an antioxidant, and the flame-retardant synergist is aliphatic dicarboxylic acid with the carbon atom number greater than or equal to 8. The material surface energy is reduced and electrolyte is repelled through long-carbon-chain hydrophobic groups, and meanwhile, the CTI value is increased to 600 V or above while it is guaranteed that the material reaches the UL94 V0 flame retardant grade (1.6 mm) by utilizing interaction of carboxyl and a PA66 matrix and cooperating with a phosphorus flame retardant. The invention also provides a preparation method of the material, the process is simple, the material is suitable for industrial production, and the product can be widely applied to electronic and electrical components with high safety requirements.

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain bisphenol A homopolycarbonate, talc, phosphorus-containing flame retardant, fluorine-containing anti-drip agent, and anhydride-modified alpha-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

The invention discloses a high-flowability and high-CTI (comparative tracking index) halogen-free flame-retardant polyamide composite material and a preparation method thereof, and belongs to the field of polymer composite materials. The high-flowability and high-CTI halogen-free flame-retardant polyamide composite material is prepared from the following components in parts by weight: 20 to 60 parts of polyamide resin, 1 to 20 parts of benzene ring-containing polyamide resin, 1 to 10 parts of polyester resin, 10 to 50 parts of glass fiber, 10 to 20 parts of halogen-free flame retardant, 1 to 15 parts of flame-retardant synergist, 0.5 to 3 parts of antioxidant and 0.5 to 2 parts of lubricant. Under the interaction of a plurality of polyamides and polyester alloys and the synergistic effect of a plurality of flame-retardant synergists, the flame-retardant polyamide composite material not only has excellent mechanical properties and flame retardancy, but also has excellent material flowability and tracking resistance; therefore, the composite material has a good prospect in new energy, electronic and electrical appliances and other related applications requiring thin-wall forming and higher electrical insulation.

Thermoplastic polymer compositions are disclosed that exhibit a flame retardant rating of V-0 at a thickness of 0.8 mm, and exhibit a comparative tracking index of 600 V. The polymer composition may include a glass reinforced polyester polymer, i.e., a polybutylene terephthalate polymer. In addition to one or more insulating aids, a flame retardant composition is also combined with the polymer composition.

The invention discloses a high-CTI (comparative tracking index) flame-retardant PBT (polybutylene terephthalate) material and a preparation method thereof, and relates to the technical field of engineering plastics. The high-CTI flame-retardant PBT material disclosed by the invention is prepared from the following raw material components in parts by weight: 100 parts by mass of PBT, 16 to 24 parts by mass of compound flame retardant, 1 to 2 parts by mass of laser carving color master batch, 0.9 to 1.1 parts by mass of compatilizer, 9 to 11 parts by mass of glass fiber, 9 to 11 parts by mass of reinforcing filling aid and 0.2 to 0.3 part by mass of antioxidant, the compound flame retardant comprises the following raw material components in parts by weight: 16 parts by mass of modified brominated epoxy resin, 7-9 parts by mass of an MCA flame retardant and 6-8 parts by mass of antimony trioxide; the reinforcing filling auxiliary agent is pentaerythritol modified mica or pentaerythritol modified talcum powder; the modified brominated epoxy resin is obtained by modifying epoxy resin with phosphorus oxychloride.

The invention provides a polycarbonate composite material as well as a preparation method and application thereof, and the polycarbonate composite material is prepared from the following raw materials in percentage by weight: 68-93% of polycarbonate; 2%-7% of silicone rubber; 5%-10% of a silicon flame retardant; 10%-15% of heat-resistant filler; and 0.65%-2.5% of an auxiliary agent. According to the polycarbonate composite material provided by the invention, the silicone rubber, the silicon flame retardant and the heat-resistant filler are introduced and compounded for use, so that the polycarbonate composite material has excellent CTI (comparative tracking index) performance, good flame retardant property and excellent thermal stability at the same time.

The invention relates to the technical field of polyaryletherketone modification, in particular to a hydrophobic high-CTI (comparative tracking index) polyaryletherketone composite material which is formed by melting, blending and compounding a material A and a material B, the material A comprises polyaryletherketone and polyether acrylate fluoride; the material B is a graft of nitrogen-doped aluminum borate modified by an amino silane coupling agent and a glycidyl acrylate compound; the composite material has hydrophobicity, the CTI value is at least 340 V, the water absorption rate is low, and the composite material can be suitable for a high-humidity environment.

A high voltage electrical component for an electric vehicle is provided. The component comprises a polymer composition that includes a polymer matrix containing a liquid crystalline polymer. The composition exhibits a comparative tracking index of about 125 volts or more as determined in accordance with IEC 60112:2003 at a thickness of 3 millimeters. Further, the composition defines an orange surface that is characterized by a L* value of from about 55 to about 75, an a* value of from about 18 to about 38, and a b* value of from about 22 to about 42, wherein L*, a*, and b* are calculated using CIELAB units according to ASTM D2244-16.

The invention discloses a high-CTI (comparative tracking index) flame-retardant PBT (polybutylene terephthalate) material capable of being carved by laser. The PBT material comprises the following components in parts by weight: 80-100 parts of PBT resin; 5 to 10 parts of a TCPP flame retardant; 0.5 to 1 part of a fluorinated boron nitride nanosheet; 0.5 to 3 parts of a flow modifier; 0.1 to 0.5 part of laser etching powder; the preparation method comprises the following steps: uniformly mixing the components, adding into a double-screw extruder, carrying out melt extrusion, cooling, and granulating to obtain particles; the PBT material prepared from the raw materials has laser etching performance and high flame retardant performance, and also has a high CTI (Comparative Tracking Index) value.

The present invention relates to a thermoplastic polymer composition with a comparative tracking index (CTI) rating of 600 V or higher comprising. between 54-96 wt. % of a poly(butylene terephthalate); between 0.5-5.0 wt. % of a pyro / polyphosphate: between 0.5-5.0 wt. % of an alkyl acrylate based copolymer: between 0.5-5.0 wt. % of a polyethylene: between 2.5-30 wt. % of a glass fibre and between 0-1.0 wt. % of a mineral filler: wherein the weight percentages are based on the total weight of the thermoplastic polymer composition. It also relates to the articles formed from the thermoplastic polymer composition, and their methods of manufacture.

Polycarbonate compositions include: (a) from about 45 wt % to about 90 wt % of a polycarbonate homopolymer; (b) from about 1 wt % to about 25 wt % of a polycarbonate copolymer; (c) from about 0.1 wt % to about 20 wt % of a first flame retardant component including a brominated flame retardant; (d) from about 0.01 wt % to about 1 wt % of a second flame retardant component including an alkyl sulfonate salt, an aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; and (e) from about 0.1 wt % to about 20 wt % of a siloxane-free acrylic core-shell impact modifier. The combined weight percent value of all components does not exceed 100 wt %, and all weight percent values are based on the total weight of the composition.

Polycarbonate compositions include: (a) from about 45 wt% to about 90 wt% of a polycarbonate homopolymer; (b) from about 1 wt% to about 25 wt% of a polycarbonate copolymer; (c) from about 0.1 wt% to about 20 wt% of a first flame retardant component including a brominated flame retardant; (d) from about 0.01 wt% to about 1 wt% of a second flame retardant component including an alkyl sulfonate salt, an aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; and (e) from about 0.1 wt% to about 20 wt% of a siloxane-free acrylic core-shell impact modifier. The combined weight percent value of all components does not exceed 100 wt%, and all weight percent values are based on the total weight of the composition.

The invention discloses a high-CTI (comparative tracking index) thin-wall flame-retardant PC (polycarbonate) compound which comprises the following components in percentage by weight: 70-95% of polycarbonate; 1-5% of a toughening agent; 1-10% of an inorganic filler; 1-5% of a compound flame retardant; 0.5 to 2 wt% of polytetrafluoroethylene; and 0.5-5 wt% of other additives. The invention further discloses a preparation method of the high-CTI thin-wall flame-retardant PC compound. The polycarbonate composite material obtained by the invention can achieve the balance of high CTI (Comparative Tracking Index) and thin-wall halogen-free flame retardance, and has good mechanical properties.

Described is a thermoplastic composition based on aromatic polycarbonate having a high comparative tracking index, good flame retardancy, and high heat distortion temperature. The composition contains a combination of a polyalkyl (meth)acrylate, a phosphorus-containing flame retardant, and a fluorine-containing anti-drip agent.

The invention relates to an EE device including depending on the operating voltage applied, different distance ranges between the electrical conductors, the distances being so small that already the material used between the electrical conductors results in a very high comparative tracking index. Surprisingly, this material is a polycarbonate-based material the comparative tracking index of which is significantly increased when relatively small amounts of fluorine-containing anti-dripping agent and phosphorus-based retardant are added.

A connector (1) includes a plurality of terminals (10), a first member (20) made of a first resin to cover a part of a surface of each of the plurality of terminals (10), and a second member (30) made of a second resin to cover a part of a surface of each of the plurality of terminals (10) and a surface of the first member (20) on a side opposite to each of the terminals (10). The plurality of terminals (10) protrude to be exposed from a surface of the second member (30). A breaking energy in a transverse direction of the first resin is 2 J or more. A comparative tracking index of the second resin is 400 V or more.

A polymer composition containing glass fibers and having an excellent balance of properties is disclosed. The polymer composition exhibits a comparative tracking index of greater than about 400 volts and a dielectric strength of greater than about 4 kV / mm. In addition, the polymer composition can have excellent surface properties even if a part of a longer length is molded. The polymer composition may contain at least one stabilizer in combination with calcium phosphate, such as hydroxy calcium phosphate. In one aspect, calcium phosphate is present in the polymer composition in the form of bone black.

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain at least 44.5 wt. % aromatic polycarbonate in which bisphenol TMC is used as a monomer unit, 30 to 40 wt. % talc, 6 to 14 wt. % phosphorus-containing flame retardant, 0.3 to 2.0 wt. % fluorine-containing anti-drip agent, and 1 to 3 wt. % anhydride-modified α-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

The invention provides a low-friction and high-CTI (comparative tracking index) polyphenylene sulfide composite material and a preparation method thereof. The low-friction and high-CTI polyphenylene sulfide composite material comprises the following components in parts by weight: 30-60 parts of polyphenylene sulfide; 20 to 40 parts of glass fiber; 10 to 20 parts of a carbonization inhibitor; 5 to 20 parts of fluororesin; 0.1 to 5 parts of other auxiliary agents; wherein the carbonization inhibitor is one or a mixture of more than one of magnesium hydroxide, aluminum hydroxide and calcium carbonate, and the carbonization inhibitor is powder with the mesh number ranging from 1250 meshes to 3000 meshes; the fluororesin is one or a mixture of more than one of PTFE (polytetrafluoroethylene), PFA (perfluoroalkoxy) and FEP (fluorinated ethylene propylene), and the fluororesin is powder with the mesh number of 3000-6000; the weight ratio of the carbonization inhibitor to the fluororesin is (1-2): 1. According to the invention, the preparation of the polyphenylene sulfide composite material which has low friction and high CTI (Comparative Tracking Index) performance and also keeps the mechanical properties such as tensile strength of the material is realized.

The invention belongs to the technical field of polyamide composite materials, and particularly relates to a polyamide composite material and a preparation method and application thereof. The polyamide composite material is characterized by comprising the following raw materials in parts by mass: 50-70 parts of PA66, 5-10 parts of a modified halogen-free flame retardant, 20-40 parts of glass fibers, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricant, the modified halogen-free flame retardant comprises polyborosiloxane modified ammonium polyphosphate and phosphorus-containing boehmite of which the surface is modified by vinyl borate. According to the preparation method, polyborosiloxane modified ammonium polyphosphate and phosphorus-containing boehmite with the surface modified with vinyl borate are creatively prepared to serve as modified halogen-free flame retardants, so that the polyamide composite material has high glow wire performance and high flame retardance, and meanwhile, the polyamide composite material has high CTI (Comparative Tracking Index) and weather resistance.

The invention relates to the technical field of polymer compositions, and discloses a high-CTI-value arc-resistant modified polyphenyl ether composition for a new energy battery, which comprises polyphenyl ether resin, high-impact polystyrene resin, hexaphenoxy cyclotriphosphazene, active modified nano hexagonal boron nitride and a maleic anhydride grafted elastomer, wherein hexaphenoxy cyclotriphosphazene wets and coats the surface of active modified nano hexagonal boron nitride to form a core-shell structure intermediate, the core-shell structure intermediate is directionally distributed and anchored at a continuous phase interface of polyphenyl ether under the action of polar traction, and a continuous non-conductive isolation strip is constructed on the periphery of a matrix. Decoupling of insulation performance and mechanical toughness is achieved through an interface targeted protection mode, component migration and precipitation are inhibited while qualitative change of tracking resistance is improved, and electrical safety and structural reliability of the new energy battery module in the whole life cycle are guaranteed.

Polycarbonate compositions include: (a) from about 45 wt% to about 90 wt% of a polycarbonate homopolymer; (b) from about 1 wt% to about 25 wt% of a polycarbonate copolymer; (c) from about 0.1 wt% to about 20 wt% of a first flame retardant component including a brominated flame retardant; (d) from about 0.01 wt% to about 1 wt% of a second flame retardant component including an alkyl sulfonate salt, an aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; and (e) from about 0.1 wt% to about 20 wt% of a siloxane-free acrylic core-shell impact modifier. The combined weight percent value of all components does not exceed 100 wt%, and all weight percent values are based on the total weight of the composition.

The present disclosure relates to a polycarbonate composition including the following components, relative to the total weight of the composition: A) 10-60 wt. % of a copolycarbonate, B) 25-75 wt. % of a homopolycarbonate, C) 3-13 wt. % of a phosphorous flame retardant, D) 4-9 wt. % of an impact modifier, and E) 2-14 wt. % of a polyester poly(1,4-butylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and a combination thereof. The present disclosure also relates to a shaped article made from the composition. The polycarbonate composition according to the present disclosure has a good combination of comparative tracking index, high heat resistance, good impact resistance and flame retardancy.

The present invention relates to: an epoxy resin composition for molding, the epoxy resin composition comprising an epoxy resin, a curing agent, a filler, a phosphazene compound, and a melamine derivative, wherein the mixing ratio of the phosphazene compound and the melamine derivative is 2 to 40:1 part by weight, and the comparative tracking index is 600 V or more; and a semiconductor device molded by using the epoxy resin composition.

The invention relates to the technical field of semiconductor packaging materials, and discloses an epoxy resin composition and a preparation method and application thereof. The epoxy resin composition contains epoxy resin, a curing agent, an accelerant, an inorganic filler, a flame retardant, a release agent, a coupling agent, a modifier and a coloring agent, wherein the epoxy resin is a combination of naphthalene type structure epoxy resin and biphenyl type structure epoxy resin or bisphenol F type structure epoxy resin; the curing agent is a combination of XY-lock type phenolic resin and polyfunctional group type phenolic resin. The epoxy resin composition can pass a test that the comparative tracking index CTI is greater than or equal to 600 while ensuring high reliability and excellent operability, has excellent surface anti-creepage tracking endurance capability under wet and dirty working conditions, and has a wide application prospect in the field of semiconductor packaging.

A polymer composition for applications requiring increased hydrolytic stability and / or improved comparative tracking index, the polymer composition comprising at least one semi-aromatic polyester resin, at least one epoxy-containing compound, at least one bis-lactam, and at least one phosphorus-containing compound.

Thermoplastic compositions include: (a) from about 10 wt% to about 40 wt% of a PBT (polybutylene terephthalate) component; (b) from about 5 wt% to less than 10 wt% of a glass fiber component; (c) from about 50 wt% to about 70 wt% of a mineral filler component including aluminum silicate, aluminum oxide, magnesium oxide, or a combination thereof; (d) from about 0.1 wt% to about 10 wt% of an impact modifier component comprising from about 0.4 wt% to about 3.5 wt% of an ethylene-ethyl acrylate copolymer (EEA) and from about 0.5 wt% to about 3 wt% of an ethylene-methyl acrylate-glycidyl methacrylate terpolymer (EMAGMA); and optionally a polycarbonate-siloxane copolymer component. The composition does not include a polycarbonate copolymer other than the optional polycarbonate-siloxane copolymer in element (e). The composition has a comparative tracking index number (CTI) rating of PLC-0 as determined in accordance with UL746A.

Polycarbonate compositions include: (a) from about 45 wt % to about 90 wt % of a polycarbonate homopolymer; (b) from about 1 wt % to about 25 wt % of a polycarbonate copolymer; (c) from about 0.1 wt % to about 20 wt % of a first flame retardant component including a brominated flame retardant; (d) from about 0.01 wt % to about 1 wt % of a second flame retardant component including an alkyl sulfonate salt, an aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; and (e) from about 0.1 wt % to about 20 wt % of a siloxane-free acrylic core-shell impact modifier. The combined weight percent value of all components does not exceed 100 wt %, and all weight percent values are based on the total weight of the composition.