42results about How to "Improve tracking resistance performance" patented technology

A flame-retardant resin composition comprises a base resin (e.g., a polyester-series resin), a flame retardant (A) comprising a salt of an amino group-containing triazine compound with a sulfuric acid and / or a sulfonic acid, a flame-retardant auxiliary (B). The flame-retardant auxiliary (B) includes an aromatic resin, acyclic urea-series compound or a derivative thereof [e.g., acetyleneurea, uric acid, a salt of melamine or a condensate thereof (e.g., melam, melem, and melon) with cyanuric acid], an amino group-containing triazine compound (e.g., melamine or a condensate thereof), and / or an inorganic metal-series compound (e.g., a metal salt of an oxygen acid having no sulfur atom, a metal oxide, a metal hydroxide, and a metal sulfide). The present invention provides a flame-retardant resin composition to which flame retardancy is imparted without using a halogen-series flame retardant and an organic phosphorus-series flame retardant.

Systems and methods are disclosed that facilitate extending data retention time in a data retention device, such as a nanoscale resistive memory cell array, via assessing a resistance level in a tracking element associated with the memory array and refreshing the memory array upon a determination that the resistance of the tracking element has reached or exceeded a predetermined reference threshold resistance value. The tracking element can be a memory cell within the array itself and can have an initial resistance value that is substantially higher than an initial resistance value for a programmed memory cell in the array, such that resistance increase in the tracking cell will cause the tracking cell to reach the threshold value and trigger refresh of the array before data corruption / loss occurs in the core memory cells.

The invention relates to the technical field of alloy materials and discloses a thin-wall high-CTI-value flame-retardant polycarbonate blend and a preparation method thereof. Compared with the prior art, a phosphonitrile flame retardant is added into the raw material formula of the preparation method, so that on one hand, the drawbacks that the thermal distortion temperature and flexibility of polycarbonate are substantially decreased due to the addition of an organic phosphate flame retardant in the prior art can be effectively overcome, and the heat resistance and tenacity of a polycarbonatecomposition is effectively improved; and on the other hand, the phosphonitrile flame retardant with effective nitrogen and phosphorus amounts has very good flame-retardant effect, the flame-retardantlevel of the polycarbonate composition can be effectively increased, and meanwhile, the electric leakage marking resistance of the polycarbonate composition can be greatly improved by virtue of the phosphonitrile flame retardant.

The present invention includes a flame-retardant thermoplastic polyester resin composition which provides a molded article having excellent tracking resistance and excellent mechanical characteristics, while maintaining high flame retardancy; and a molded article which is obtained by molding the flame-retardant thermoplastic polyester resin composition. A flame-retardant thermoplastic polyester resin composition of an embodiment of the present invention contains 1-70 parts by weight of two or more (C) phosphorus-containing flame retardants that are selected from the group consisting of (C-1) condensed phosphoric acid esters, (C-2) phosphazene compounds and (C-3) organic metal phosphinates and 1-90 parts by weight of (D) a nitrogen-containing flame retardant per 100 parts by weight of the total of 50-95 parts by weight of (A) a thermoplastic polyester resin and 5-50 parts by weight of (B) a methacrylic resin.

The invention discloses a high-performance anti-tracking addition type liquid silicon rubber composition and a preparation method thereof. The composition is composed of, by mass, 100 parts of vinyl silicon oil, 40 parts of white carbon black, 6.8 parts of hexamethyldisilazane, 1.0-2.5 parts of hydrogen-containing silicon oil, 2-5 parts of fluorine-containing organic-inorganic hybrid low-melting-point glass, 1-3 parts of carbamido-containing vinyl MQ silicon rubber, 5-40ppm of platinum catalyst and 0.03 part of 1-acetenyl-1-cyclohexano. Addition type liquid silicon rubber has excellent anti-tracking performance, hydrophobic performance and mechanical performance and has quite wide application prospect in the field of high-voltage ultrahigh-voltage power transmission and transformation and electronics.