3results about How to "Achieving controllable synthesis" patented technology

This invention provides a controllable synthesis method for 1,4,7,10-tetraazacyclododecanepentazole salt, belonging to the field of energetic materials technology. It includes two synthesis methods: the first is the synthesis of 1,4,7,10-tetraazacyclododecane dipentazole salt, in which 1,4,7,10-tetraazacyclododecane tetrahydrochloride is dissolved in deionized water, at least 4 equivalents of silver pentazole powder are added, the reaction is performed ultrasonically and in the dark, the precipitate is filtered, and the filtrate is concentrated to obtain the product; the second is the synthesis of 1,4,7,10-tetraazacyclododecane pentaazole nitrate complex salt, which differs from the first in that 1 equivalent of silver nitrate and at least 3 equivalents of silver pentazole powder are added. This invention, by controlling the amount of silver salt added, directly synthesizes dipentazole salt and pentaazole nitrate complex salt from 1,4,7,10-tetraazacyclododecane tetrahydrochloride in one step, solving the problems of difficult raw material synthesis and uncontrollable product structure, laying the foundation for the large-scale preparation and application of energetic materials.

This invention discloses a photo-thermal dual-curing adhesive and its preparation method, belonging to the field of electronic adhesive technology. The adhesive comprises, by weight, 25-40 parts of a polyfunctional epoxy resin, 15-30 parts of epoxy acrylate, 15-35 parts of an acrylate compound, 8-16 parts of a polythiol compound, 0.1-5 parts of a photoradical generator, and 0.5-10 parts of a latent curing agent. The polyfunctional epoxy resin contains a thiadiazole ring, and each of the two carbon atoms of the thiadiazole ring is independently attached with a glycidyl ether group, the total number of glycidyl ether groups being ≥3. This invention achieves a unified effect of rapid photocuring and positioning, high adhesive strength, excellent resistance to damp heat aging, and good rework performance through the synergistic effect of the thiadiazole ring polyfunctional epoxy resin, epoxy acrylate, thiol acetylenide derivative TS-G, and polyfunctional polyester acrylate.

This invention relates to a large-size copper-doped manganese thiophosphate single crystal and its preparation method, wherein the single crystal has the chemical formula Cu. x Mn y P2S6, where 0