100 results about "Sodium nitride" patented technology

The invention discloses a method for repairing heavy metal polluted soil, and particularly discloses an in-situ repairing method of heavy metal polluted soil by utilizing compound functional resin and leacheate. The method comprises the following steps: (1) embedding the compound functional resin into heavy metal polluted soil; and (2) wetting the heavy metal polluted soil with the leacheate, wherein the compound functional resin is metal compound loaded ion exchange resin, and the metal compound is zirconium phosphate or zirconium dioxide; and the leacheate is citric acid, sodium acetate, sodium nitride or ammonium nitrate solution. By adopting the method, the soil structure and property are not changed during in-situ soil repairing, and late crop cultivation is facilitated; and the compound functional resin can be recycled, does not generate secondary pollution, can be used for reducing cost and increasing economic benefit, is not influenced by environmental conditions, and is simple in method.

The present invention discloses an anti-impact heat-dissipating coating material, which which comprises the following raw materials by weight: 4-7 parts of soapstone, 2-3 parts of polyether diol, 12-15 parts of a styrene-maleic anhydride copolymer, 6-10 parts of propargyl alcohol, 90-100 parts of tetrahydrofuran, 4-7 parts of graphene, 16-20 parts of nanometer silica, 0.2-0.3 part of a silane coupling agent KH560, 700-800 parts of dimethylformamide, 4-5 parts of sodium nitride, 0.04-0.05 part of aluminum trichloride, 1.6-2 parts of a 2-3% sodium ascorbate solution, 1.8-2 parts of a 2-3% copper sulfate solution, 120-130 parts of high-density polyethylene, 0.1-0.3 part of sodium fluoroborate, 3-4 parts of dibutyl phthalate, 0.7-2 parts of 8-hydroxyquinoline, and 1-2 parts of calcium propionate. According to the present invention, the coating material is added with the soapstone, the graphene, the nanometer silica and the like as the filler particles, such that the good anti-impact strength is provided.

A method for detecting residual intermediate of tropaic alcohol in tropisetron synthesis includes preparing test solution and control solution , dropping them separately on the same silica gel G thin layer plate , using acetone ¿C ammonia water as developing agent to carry out thin layer chromatography determination, developing chromatographic cylinder, using developer of bismuth potassium iodide solution with assistance of sodium nitride solution to develop color and checking colour developed result.

The invention relates to a cage anti-falling speed reduction buffer device. The cage anti-falling speed reduction buffer device is composed of an electromagnetic induction speed reduction device and an auxiliary inflatable buffer device; an aluminum plate ring is fixed on a cage channel, when the cage falls, a speed sensor or an acceleration sensor exceeds a specified maximum value, automatic circuit conduction is achieved on the speed sensor or the acceleration sensor, the strong current generates a strong magnetic field, according to the Lenz's law, when the cage passes through the aluminumplate ring, the magnetic field of the induced current is always used for blocking the change of the magnetic flux of the induced current, the generated resistance enables the cage to achieve speed reduction to be descended, the cage is descended safely through the step type speed reduction, the safety of the personnel is guaranteed, and the first protection effect is achieved; and a proximity switch enables a trigger to act, the current is sent to an igniter, the sodium nitride propellant contained in the igniter is ignited, then a large amount of harmless gas which takes nitrogen as a main gas can be generated, an air bag is inflated to a full state, and a second protection effect is achieved. According to the cage anti-falling speed reduction buffer device, the design is simple, the weight of the cage cannot be increased, the long-standing technical problem that the cage falls due to the facts that the case suffers from rope breakage, failed braking and failure of an anti-falling device are solved, the work is reliable, the safety performance is high, and the practicability is high.

The present invention discloses hard heat-dissipation paint. The hardheat-dissipation paint consists of the following raw materials in parts by weight:2-3 parts of ethylene glycol distearate, 12-15 parts of styrene-maleic anhydride copolymer, 6-10 parts of propargyl alcohol, 90-100 parts of tetrahydrofuran, 4-7 parts of graphene, 16-20 parts of nano silica, 0.2-0.3 part of a silane coupling agent KH560, 700-800 parts of dimethyl formamide, 4-5 parts of sodium nitride, 0.04-0.05 part of aluminium trichloride, 1.6-2 parts of a 2-3% sodium ascorbate solution, 1.8-2 parts of a 2-3% copper sulfate solution, 120-130 parts of high density polyethylene, 2-3 parts of barium metaborate, 0.8-1 part of calcium palmitate, 0.7-2 parts of allythiourea, 0.6-1 part of poly(oxypropylene) diol, 1-2 parts of aluminosilicate fibers, and 0.1-0.2 part of aluminum isopropoxide. The paint provided by the present invention is high in the surface hardness, good in the impact resistance, good in weather-ability, high in coating membrane stability, and superior in synthesis performance.