35results about How to "High tracking index" patented technology

The invention discloses a flame-retardant enhanced PBT material and a preparation method thereof. The flame-retardant enhanced PBT material comprises the following components in percentage by weight: 45 to 60 percent of PBT resin, 3 to 10 percent of brominated flame retardant, 1 to 10 percent of phosphorus-nitrogen flame retardant, 1 to 5 percent of inorganic flame retardant, 2 to 5 percent of toughening agent, 20 to 35 percent of glass fiber, 0.3 to 1 percent of lubricating agent, and 0.1 to 0.6 percent of antioxidant. The flame-retardant enhanced PBT material has high ignition temperature of glowing filament, high comparative tracking index, and better mechanical property, and can be widely applied to the field of unattended electronic and electric products.

The present invention relates to an epoxy resin composition for copper-clad plate and application thereof. The epoxy resin composition can be used for preparing a prepreg and a copper clad laminate. The epoxy resin composition uses brominated epoxy resins including low-bromine epoxy resin and high-bromide epoxy resin as a bromine source, and uses a phosphorus-containing phenanthrene compound as a phosphorus source; the ratio of the bromine source to phosphorus source in the epoxy resin composition is adjusted to control bromine content at 5-12% and phosphorus content at 0.2-1.5%; and the flame resistance reaches up to grade UL94V-0. Compared with pure bromine flame retardant copper-clad plate, the composition has higher heat resistance, and can achieve a higher CTI value; compared with pure phosphorus flame retardant copper-clad plate, the composition has low moisture absorption rate, and can provide the bonding properties and process operability required by printed circuit substrate. Compared to extensive use of aluminum hydroxide in conventional CTI sheet, the composition uses very small amount of or no aluminum hydroxide to achieve CTI of higher than 600V.

The present invention relates to an epoxy resin composition for copper-clad plate and application thereof. The epoxy resin composition can be used for preparing a prepreg and a copper clad laminate. The composition uses brominated bisphenol A and phenolic aldehyde containig phosphorus as a bromine source and a phosphorus source respectively; and the ratio of the two in the epoxy resin is adjusted to control the bromine content at 5-12%, phosphorus content at 0.2-1.5%; and the flame resistance reaches up to grade UL94 V-0. The prepreg and laminate produced by the epoxy resin composition not only has reduced halogen content and improved heat resistance, but also gains improved pressure resistance of substrate, low moisture absorption, good adhesion, reactivity and workability, realizes comparative tracking index higher than 600V, and greatly reduces the cost of production.

The invention relates to an epoxy resin composition for a copper-clad board and an application thereof. The epoxy resin composition comprises flame retardant additives containing phosphorus and flame retardant additives containing bromine and can be used for preparing prepreg and copper-clad laminated boards. According to the epoxy resin composition for the copper-clad board and the application thereof, brominated polystyrene, decabromodiphenyl ethane and the like are adopted to serve as sources of the bromine, phosphazene, melamine polyphosphate, aluminum metaphosphate or melamine cyanurate and the like serve as sources of the phosphorus, the proportion of the flame retardant additives containing the phosphorus and the flame retardant additives containing the bromine of the composition is adjusted to make the bromine content controlled between 5% and 12% and make the phosphorus content controlled between 0.2% and 1.5%, and the flame retardancy of the composition can reach grade UL94 V-0; compared with a pure-bromine flame-retardant copper-clad board, the heat resistance is higher, and a higher CTI value can be reached; compared with a pure-phosphorus flame-retardant copper-clad board, the rate of moisture absorption is lower, and the adhesive property and the technological operability which are needed for printing circuit substrates can be provided; compared with a traditional board which has a high CTI and adopts a large amount of aluminum hydroxide, by means of the epoxy resin composition for the copper-clad board, the CTI can reach to be above 600 V by utilizing a small amount of the aluminum hydroxide or not utilizing the aluminum hydroxide at all.

The invention discloses a polyamide composite material with high glowing filament temperature. A raw material formula of the polyamide composite material comprises, by weight, polyamide 40%-70%, halogen-free flame retardant 5%-15%, lubricating agent 0.1%-3%, antioxidant 0.1%-1% and reinforced modifying agent 10%-30%. The halogen-free flame retardant is cyanuric acid melamine. The invention further discloses a preparation method and application of the polyamide composite material with the high glowing filament temperature. The polyamide composite material with the high glowing filament temperature is light in color, light in specific gravity and wide in application range, can be dyed with various colors and has comparative tracking index larger than 500V, and the glowing filament combustion index is 960 DEG C. The polyamide composite material with the high glowing filament temperature can be prepared by means of a conventional device and a conventional method, a manufacture device is not required to be modified, and industrial production is easily performed.

The invention relates to thermosetting plastic and its preparation method and a power lithium battery pack assembly casing prepared from the thermosetting plastic. The thermosetting plastic comprises a base, fillers, a reinforcing material and aids. The base is prepared from thermosetting resins such as unsaturated polyester resin and vinyl ester resin. The fillers are inorganic non-metallic fillers such as wollastonite and barite. The preparation method comprises (1), dispersion, (2) stirring mixing, kneading and dipping, and (3) curing molding. The assembly casing comprises two or more single boxes connected with each other. The single box forms an integral structure through injection molding. The boxes are provided with connection holes or connection tabs connected to a vehicle frame. The main characteristics of the thermosetting plastic comprise that 1, a thermal deformation temperature is more than 250 DEG C higher than that of the reaction temperature of the lithium compound, 2, the thermosetting plastic is flame retardant, resists a high temperature and does not collapse after burning, 3, the spark discharge caused by battery short circuit is effective resisted, 4, insulation and thermal conductivity are obtained and a battery design is convenient, and 5, weight is light, electrombile weight reduction is promoted and noise is reduced.

The invention discloses a flame-retardant glass fiber-reinforced HDPE / PA12 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 to 41% of PA12, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 200 to 220 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high CTI value, low precipitation performance, etc.

The invention relates to an environment-friendly flame-resistant PP material and a preparation method thereof. The material is prepared from the following components in parts by weight: 90 to 96 parts of PP, 1 to 5 parts of a compounded flame retardant, 2 to 10 parts of a flexibilizer, 0.1 to 1 part of an antioxidant, and 0.1 to 1 part of an oxide. The preparation method comprises the following steps: mixing the raw materials into a high temperature mixer for 2 to 5 minutes, discharging, then using a double screw extruder for extrusion pelletization, and ensuring that the processing temperature is 200 to 220 DEG C and the revolution of a screw is 300 to 400 rpm, so as to obtain the environment-friendly flame-resistant PP material. Compared with the prior art, the environment-friendly flame-resistant PP material has the advantages that the glowing filament temperature (GWIT) is high, the comparative tracking index (CPI) is high, and the material is environmentally friendly and balanced in comprehensive performance, and can be widely applied to fields of wall switches, sockets, pipes, molded case circuit breakers, motor components, plates and the like.

The invention relates to an environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene) / PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value. The alloy material is prepared from the following raw materials in percentage by weight: 23-41% of PP, 22-41% of PA46, 6-20% of compound flame retardant, 3-15% of antimony trioxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxide. The invention also provides a preparation method of the alloy material. The alloy material has high GWIT and high CTI, is environment-friendly, has balanced overall performances and can be widely applied to low-voltage electronic capacitor shells, load break switches, carbon brush brackets and moulded case circuit breakers.

The invention discloses a red phosphorus flame-retardant nylon composite material, which comprises the following components by weight: nylon resin: 40-80 parts; reinforcing component: 10-50 parts; red phosphorus flame retardant: 4-12 parts; Red phosphorus stabilizer: 0.5-8 parts; smoke suppressant: 0.5-5 parts; tracking index enhancer: 2-10 parts; masterbatch: 0.5-5 parts; antioxidant: 0.1-0.5 parts. The present invention also correspondingly provides a preparation method of the above-mentioned red phosphorus flame-retardant nylon composite material and a method for measuring phosphorus precipitation in the red phosphorus flame-retardant nylon composite material. The composition of the red phosphorus flame-retardant nylon composite material of the present invention is optimized, and each component interacts synergistically, and the performance of the obtained red phosphorus flame-retardant nylon composite material is more balanced. In addition to high flame-retardant efficiency, excellent mechanical At the same time, it also has the advantages of low smoke density, excellent anti-separation performance and high tracking index.

The invention discloses a flame-retardant glass fiber-reinforced HDPE / PA46 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 to 41% of PA46, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 220 to 240 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high CTI value, low precipitation performance, etc.

The invention discloses an environment-friendly flame retardant glass fiber reinforced polypropylene / polyamide66 (PP / PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value, which comprises the raw material components by weight percent: 23-41% of PP, 22-41% of PA66, 6-20% of compound fire retardant, 3-15% of antimonous oxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxide. The invention also discloses a preparation method of the environment-friendly flame retardant glass fiber reinforced PP / PA66 alloy material with high CTI value and high GWIT value. The environment-friendly flame retardant glass fiber reinforced PP / PA66 alloy material with high CTI value and high GWIT value has the advantages of being higher in GWIT and CTI, environment-friendly and balanced in combination properties, thus being widely applied to a low-voltage electronic capacitor shell, a load break switch, a carbon brush bracket and a moulded case circuit breaker.

The invention relates to a halogen-free flame-retardant polycarbonate / styrene base resin composition and a preparation method thereof, and the composition comprises the following components in parts by weight: 650-900 parts of polycarbonate, 0.1-250 parts of styrene base resin, 20-100 parts of toughening compatibilizer, 10-100 parts of metal inorganic compound, 5-50 parts of organic silicon, 70-150 parts of complex flame retardant, 1-10 parts of antioxidant A, 1-15 parts of antioxidant B and 0-20 parts of other auxiliary materials. The preparation method comprises the following steps: mixing raw materials in a high-speed mixing machine, then introducing into a twin-screw extruder, adding the complex flame retardant in the lateral line feeding way, performing extrusion and granulation and finally getting the product. Compared with the prior art, the halogen-free flame-retardant polycarbonate / styrene base resin composition has the advantages of high comparative tracking index (CTI), high glow-wire ignition temperature (GWIT), halogen-free flame retardance, environment friendliness and the like.

The invention relates to a flame-retardant glass fiber reinforced PA6 (polyamide 6) / PPO (P-Polyphenylene Oxide) alloy material and a preparation method thereof. The alloy material comprises the following components by weight percent: 23-41% of PA6, 22-41% of PPO, 6-20% of compound type flame retardant, 3-15% of antimonous oxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxidizing material. The raw materials are put into a high mixing machine to be mixed for 2-5min and then are discharged, and then a doubles-screw extruder is used for extruding and pelletizing so as to obtain the flame-retardant glass fiber reinforced PA6 / PPO alloy material. Compared with the prior art, the flame-retardant glass fiber reinforced PA6 / PPO alloy material has the advantages that being high in temperature of a glowing filament, environment-friendly, balanced in comprehensive properties, high in CTI (Comparative Tracking lndex) and GWIT (Glow-Wire Flammability Index), and the like.

The invention discloses a flame-retardant glass fiber-reinforced HDPE / PA66 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 to 41% of PA66, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 220 to 240 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high CTI value, low precipitation performance, etc.

The invention relates to the technical field of the production of insulating parts applied to various cabinets under an indoor medium voltage (10-20KV), particularly to a recoverable flame-retardant insulating modified material which is superior in electrical properties, such as creepage trace, and is high in mechanical strength, and preparation and application of insulating parts. A polymer with favorable thermoplasticity and favorable electrical properties, namely polyamide (nylon 6 or nylon 66), is adopted as matrix resins, and glass fibers, a fire retardant and an auxiliary agent are added in the polyamide; a melt blending modification method is adopted, so that the organic compound insulating modified material is formed; an insulating part can be formed through injection molding; after the surface of the insulating part is coated with an appropriate coating and is processed by a solidification technology, a part with a better electrical insulation property can be prepared, so that the used safety of insulating parts is improved; in addition, the insulating parts produced from the novel insulating modified material disclosed by the invention are flame-retardant, recoverable, light in weight, and high in production efficiency.

The invention discloses a flame-retardant glass fiber-reinforced PA6 / PA66 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 22.5 to 41% of PA6, 22.5 to 41% of PA66, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 220 to 255 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high glow wire temperature, a high tracking index, environment-friendliness and balanced comprehensive properties and can be extensively used for low-voltage electronic capacitor shells, load break switches, carbon brush supports and molded case circuit breakers.

The invention discloses a flame-retardant glass fiber-reinforced HDPE / PA11 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 to 41% of PA11, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 200 to 220 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high CTI value, low precipitation performance, etc.

The invention relates to an environment-friendly flame-retardant glass fiber reinforced PA6 (Polyamide 6) material and a preparation method thereof. The environment-friendly flame-retardant glass fiber reinforced PA6 material is prepared from the following components in parts by weight: 45-82 parts of PA6, 6-20 parts of compound flame retardant, 3-15 parts of antimony trioxide, 20-30 parts of glass fiber, 2-10 parts of compatilizer, 0.1-1 part of antioxidant and 0.1-1 part of oxide. The method comprises the following steps of: weighing raw materials according to a formula, and putting into a highly mixing machine for mixing for 2-5 minutes; and discharging, and extruding and pelletizing by using a double-screw extruder to obtain the environment-friendly flame-retardant glass fiber reinforced PA6 material. Compared with the prior art, the environment-friendly flame-retardant glass fiber reinforced PA6 material has the advantages of high glowing filament ignition temperature (GWIT), environment friendliness, balanced comprehensive performance, high CTI (Comparative Tracking Index) value, high GWIT value and the like.

The invention relates to an environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene) / PA (polyamide) 11 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value. The alloy material is prepared from the following raw materials in percentage by weight: 23-41% of PP, 22-41% of PA11, 6-20% of compound flame retardant, 3-15% of antimony trioxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxide. The invention also provides a preparation method of the alloy material. The alloy material has high GWIT and high CTI, is environment-friendly, has balanced overall performances and can be widely applied to low-voltage electronic capacitor shells, load break switches, carbon brush brackets and moulded case circuit breakers.