64results about How to "Exothermic stable" patented technology

The invention discloses a prostate thermal therapy cushion, which comprises a base and a thermal therapy layer, wherein a scrotum support part is arranged at the top end of the base; a perineum attaching part is arranged on the middle part of the base; a buttock clamping part is arranged at the back end of the base; thigh clamping parts are arranged on the two side faces of the base respectively; the thermal therapy layer comprises a non-woven fabric bag layer, a raw material layer and a gelatin layer; the shape of the non-woven fabric bag layer is matched with the shape of the base; both sides or the front and back ends or the periphery of the non-woven fabric bag layer is provided with skirts; the raw material layer is formed in a cloth bag on the top surface of the non-woven fabric bag layer; the gelatin layer is formed on the upper surface of the non-woven fabric bag layer; the thermal therapy layer is fixed on the base through the skirts. By adopting the prostate thermal therapy cushion provided by the invention, the thermal therapy position is accurate, and hurt to testicles can be avoided effectively; the prostate thermal therapy cushion can be placed in a convenient and comfortable manner without requiring a user to adopt a specific instrument at specified time and place; the prostate thermal therapy cushion can release heat stably and durably without adjusting the temperature; the treatment cost is low, and the cost-performance ratio is high.

The invention discloses an environment-friendly production method for permanent violet RL, which comprises the following: (1) a step of alkylation which is to prepare liquid caustic soda, add a carbazole raw material, a catalyst and pure benzene in turn, drip bromoethane, stand the solution and separate out N-ethyl carbazole; (2) a step of nitration, which is to add the N-ethyl carbazole and chlorobenzene, drip nitric acid of which the weight percentage concentration is 36.5 to 37.5 percent, and separate out an intermediate 3-nitro-N-ethyl carbazole; (3) a step of reduction, which is to add chlorobenzene, 3-nitro-N-ethyl carbazole and an iron catalyst in turn, drip hydrazine hydrate to obtain a solution of 3-animo-N-ethyl carbazole and ortho-dichlorobenzene; (4) a step of condensation, which is to add ortho-dichlorobenzene into the solution of 3-animo-N-ethyl carbazole and ortho-dichlorobenzene, add tetrachlorobenzoquinone, drip sodium acetate and obtain a permanent violet RL condensation compound; and (5) a step of ring-closing reaction, which is to add benzene sulfonyl chloride, filter the solution, wash a filter cake, dry and obtain coarse permanent violet RL. The method has high conversion rate and is environment-friendly.

The invention relates to a preparation method for a high-performance room-temperature calcium-based composition phase-change energy storage material. The preparation method includes the following steps: (1) calcium chloride or hydrate of the calcium chloride is dissolved in water according to the molar ratio of 1:6, so that calcium chloride solution is prepared, and the calcium chloride solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (2) calcium bromide or hydrate of the calcium bromide is dissolved in water according to the molar ratio of 1:6, so that calcium bromide solution is prepared, and the calcium bromide solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (3) the calcium chloride solution and the calcium bromide solution are mixed according to a proportion to form mixed solution, and are constantly stirred, so that the calcium chloride solution and the calcium bromide solution are sufficiently and uniformly mixed into the form of fluid; (4) nucleating agent and functional additive are added into the mixed solution, and the prepared brine compound is filled into a container and packaged. The low-temperature phase-change material prepared by the invention has the advantages that: the price is low, the latent heat of phase change is 160J / g to 200J / g, the phase-change temperature is between 17 DEG C and 28 DEG C, repeated tests prove that the performance of the phase-change energy storage material is stable, and phase separation does not exist. The phase-change energy storage material can be widely applied to energy efficiency in buildings, heating and temperature regulation in interior decoration, solar energy utilization, energy efficiency in vegetable greenhouses and other aspects.