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The invention relates to a copper corrosion inhibitor used in seawater or a sodium chloride solution, in particular to preparation and application of a low-toxicity and high-efficiency corrosion inhibitor for inhibiting the corrosion of metal copper and products thereof in seawater or a sodium chloride medium. A triazole compound is 4-(furan-2-methylene amine)-5-phenyl-4H-1,2,4-triazole-3-thiol shown as a structural formula in the specifications. The triazole compound can be used as a copper seawater corrosion inhibitor for performing corrosion prevention on a copper product in the seawater or the sodium chloride medium. The corrosion inhibitor has the advantages of small using amount, low toxicity, high efficiency, strong capability in durative action and wide application prospect, can be used for effectively inhibiting corrosive destruction to the metal copper.

The invention relates to a seawater corrosion inhibitor for copper, in particular to a triazole heterocyclic compound and preparation and application thereof. The triazole heterocyclic compound is 4-[(2-chlorobenzyl)amino]-5-p-methylbenzene-4H-[1,2,4]triazole-3-sulfydryl (named by using software), and the structural formula is shown in the specification. The 4-[(2-chlorobenzyl)amino]-5-p-methylbenzene-4H-[1,2,4]triazole-3-sulfydryl can be used as a seawater corrosion inhibitor to inhibit copper products in seawater or sodium chloride media from being corroded. The corrosion inhibitor can prevent metal copper from being totally and locally corroded when the metal copper is contacted with seawater or solution of sodium chloride. The compound is not used as a metal corrosion inhibitor at present. The corrosion inhibitor is small in using amount, low in toxicity, high in efficiency and strong in sustained action capacity, can effectively inhibit the metal copper from being corroded and damaged, and has broad application prospect.

The invention relates to a corrosion inhibitor of copper in seawater or sodium chloride solution, that is a low toxicity and high efficiency corrosion inhibitor for inhibiting corrosion of metal copper and product thereof in seawater or sodium chloride medium and application thereof. The effective component is 2-{5-[3-(4'-methyl)phenyl-4-amino-(1, 2, 4) sym-triazole]}sulfo-N-[(2'-hydroxyphenyl) methane] acethydrazide. The product provided by the invention can effectively prevent general corrosion and partial corrosion of metal copper in the contact process of seawater or sodium chloride solution. The compound is already synthesized in the laboratory, and widely applied in the antibiosis experiment, but is not used as a metal corrosion inhibitor. The corrosion inhibitor provided by the invention has the advantages of small amount, few toxicity, high efficiency and long action time, and corrosion destroy of metal copper can be effectively inhibited and the product has a wide application prospect.

The invention relates to a seawater corrosion inhibitor of copper, namely, a low-toxic and high-efficiency thiazole heterocyclic compound used for inhibiting corrosion of metal copper and products thereof in seawater or a sodium chloride medium, as well as preparation and application of the low-toxic and high-efficiency thiazole heterocyclic compound. The low-toxic and high-efficiency thiazole heterocyclic compound is (5-methyl-[1,3,4] thiadiazole-2-sulfydryl)-acetic acid (4-N,N-dimethylamine-benzylidene)-hydrazide with the following structural formula, wherein the low-toxic and high-efficiency thiazole heterocyclic compound can be used as the seawater corrosion inhibitor of the copper. In the invention, global corrosion and local corrosion of the metal copper in the process of contactingwith the seawater or the sodium chloride solution by using the low-toxic and high-efficiency thiazole heterocyclic compound as the corrosion inhibitor can be prevented. The compound has not been usedas the metal corrosion inhibitor at present. The corrosion inhibitor provided by the invention has the advantages of less consumption, low toxicity, high efficiency, strong ability in sustained action and broad application prospect; and by using the corrosion inhibitor, the corrosion damage of the metal copper can be effectively inhibited.

The invention relates to a corrosion inhibitor for copper in seawater, namely a low-toxicity efficient nitrogen heterocyclic ring corrosion inhibitor and application thereof for inhibiting corrosion of metallic copper and products thereof in a seawater medium. Triazole compounds can be used as a corrosion inhibitor for copper in seawater to perform corrosion prevention for copper products in a seawater medium or a sodium chloride medium. The corrosion inhibitor provided by the invention has little consumption, low toxicity, high efficiency and strong sustained action, can effectively inhibit corrosion damage of metallic copper, and has wide application prospects.

The invention relates to the technical field of leather chemistry and engineering and provides a leather patching method. A polyurethane foam resin material is introduced into a patching agent for patching to create a hollow-system patching agent, density of the patching agent is reduced while strength is excellent and stable, and accordingly an elastic stable object is formed. In addition, by combination of mechanical operations such as roller coating and press polishing, the patching agent can be firmly filled at defective or damaged parts of crust leather. The technical defects of lack of falling resistance and proneness to recessing of traditional patching coatings are overcome, a production cycle is shortened, and production efficiency is improved.

The invention provides a steel rust inhibiting active ingredient and a rust inhibitor based on the steel rust inhibiting active ingredient, and the steel rust inhibiting active ingredient is 2-isolongifolenone hydrazino-4-(2-oxo-2H-benzopyran-3-yl) thiazole. The present invention also provides a preparation method of the active ingredient and application of the active ingredient in corrosion protection of carbon steel materials in seawater or a sodium chloride media. The active ingredient has the advantages of low toxicity, environmental protection, high efficiency, low dosage and strong continuous action ability, can effectively inhibit the corrosion damage of carbon steel, and has remarkable application value and broad market prospects.

The invention relates to a seawater corrosion inhibitor of copper, that is, a thiazole compound with low toxicity and high efficiency for inhibiting the corrosion to copper and copper products in seawater or common salt mediums, and its preparation and application. The thiazole compound is represented by (5-methyl-[1, 3, 4]thiadiazole-2-mercapto)-acetate(4-hydroxy-3-methoxy-benzylidene)-hydrazide and the structure formula is shown in the specification. The thiazole compound can be used as the seawater corrosion inhibitor of copper to resist corrosion to copper products in seawater or common salt mediums. According to the invention, the corrosion inhibitor disclosed in the invention has the advantages of low consumption, low toxicity, high efficiency, and strong continuous action ability, can effectively resist the corrosion to copper, and has a wide application prospect.

The invention relates to a corrosion inhibitor of copper in seawater or a sodium chloride solution, i.e., a low-toxicity high-efficiency corrosion inhibitor for inhibiting corrosion of metal copper and a product thereof in the sweater or a sodium chloride medium as well as an application of the corrosion inhibitor. The effective component of the corrosion inhibitor is 2-{5-[3-(4'-methyl) phenyl-4-amino (1,2,4) s-triazole]} sulfo-N-(2'-furan) methenyl acethydrazide. The corrosion inhibitor can be used for effectively preventing general corrosion or local corrosion of metal copper in a contact process with seawater or the sodium chloride solution. At present, the compound has been synthesized in a laboratory and extensively applied to antibiosis experiments, yet has not been used as a metal corrosion inhibitor. The corrosion inhibitor provided in the invention is less in dosage, small in toxicity, high in efficiency, long in continuous action time, capable of effectively inhibiting the corrosion damages of metal copper and extensive in application prospect.

Provided is a chiller device having a function of enabling accurate and simultaneous heat-insulation control on workpieces having heat-insulation range conditions which are different from each other,by an inexpensive structure but without impairing the cooling performance and without applying overload to a compressor. In this device, when a coolant having a temperature reduced by cooling is flowed in to an evaporator (101-2) in a coolant cycle (200-2), to which a workpiece (W2) is connected, through bypass flow paths formed by first to fourth flow paths connected to a cooling cycle (100) using an evaporator (101-1) in a coolant cycle (200-1) in a shared manner, to which a workpiece (W1) is connected, the opening degree, at a valve (EV2), of the second flow path is caused to be constant bya pulse signal, which a CPU has generated on the basis of a result obtained by performing PID calculation based on a coolant pressure sensed by a sensor (P) in the cycle (100) and based on a coolanttemperature sensed by a sensor (T3) in the cycle (100), and the opening degree, at a valve (EV3), of the third flow path is variably set and the operation frequency at an electric compressor (102) isvariably controlled within a predetermined range by drive-control signal output such that the flow rate of the coolant circulating, from the valve (EV2), to the compressor (102) via a part of the first flow path converges on a target value.

The invention relates to a copper corrosion inhibitor in seawater or a sodium chloride solution, and provides an efficient corrosion inhibitor with low toxicity for inhibiting metallic copper and a product thereof from being corroded in the seawater or the sodium chloride solution and an application thereof, wherein 2-{5-[3-(4'-methyl) phenyl-4-amino-(1,2,4)s-triazoloi]}thio-N-[(4'-methoxyphenyl) methylidyne] acethydrazide is served as an effective ingredient. By utilizing the corrosion inhibitor, the general corrosion and the local corrosion of metallic copper coming into contact with the seawater or the sodium chloride solution can be prevented effectively. At present, the compound is synthesized in the laboratory and widely applied to antibacterial experiments but cannot be served as a metal corrosion inhibitor. The corrosion inhibitor provided by the invention is low in consumption, small in toxicity, high in efficiency and long in durable acting time, and can be used for effectively inhibiting metallic copper from being corroded and destroyed, thereby being board in application prospect.

The invention relates to an anti-rusting agent and in particular to a hydrotalcite intercalation chloride ion probe modified sulfydryl-containing thiadiazole anti-rusting composition and application thereof. Through chloride ion probe modification and intercalation assembling, a chloride ion triggering switch for regulating and controlling release of a hydrosulfuryl thiadiazole type anti-rusting agent is embedded into zinc-aluminum hydrotalcite layers, and a composition is formed. The anti-rusting agent composition provided by the invention can be produced on scale, is capable of implementingresponse release to corrosive environments and repairing rusted carbon steel, in addition has a long-term protection function, is capable of implementing corrosion protection of carbon steel, and hasremarkable application values and wide market prospects.

The invention relates to a corrosion inhibitor, in particular to a hydrotalcite intercalation chloride ion probe modified triazole corrosion inhibitor compound containing Schiff base and application thereof. Through chloride ion probe modification and intercalation assembly, a chloride ion trigger switch which can regulate and control release of a triazole corrosion inhibitor containing the Schiffbase is embedded between zinc-aluminum hydrotalcite layers, and the compound is formed. By adopting the corrosion inhibitor compound provided by the invention, mass production can be realized, release responding to a corrosion environment and repairing of corroded carbon steel can be realized, and the corrosion inhibitor compound has long-term protective effect and can effectively carry out corrosion protection on the carbon steel, so that the corrosion inhibitor compound provided by the invention has obvious application value and a broad market prospect.

The invention provides a tandem type magnetic refrigeration system which comprises n magnets, n magnetic regenerators arranged corresponding to any magnet, electromagnetic valves arranged between the adjacent magnetic regenerators, a low-temperature end heat exchanger, a high-temperature end heat exchanger and a hydraulic piston pump, and n is an integer larger than 1. According to the tandem type magnetic refrigeration system, through graded starting of the magnetic refrigeration system, the needed large temperature span is achieved through few kinds of magnetic heating working media, the number of magnetic heating working medium materials is reduced, the number of filling layers of the magnetic heating working media is reduced, the difficulty of the magnetic heating working medium production technology is reduced, cost is saved, and reliability is improved; in addition, when the Curie temperature difference value of the multiple layers of magnetocaloric working media is large, the magnetocaloric working medium layers with the Curie temperature greatly deviating from the environment temperature can exert the magnetocaloric effect and generate cooling capacity, and the magnetocaloric working medium layers cannot serve as heat capacity loads.

The invention relates to a copper seawater corrosion inhibitor, particularly a triazole compound, and a preparation method and application thereof. The triazole compound is 5-methyl-1,3,4-thiadiazolyl-2-mercaptan of which the structural formula is disclosed as Formula I. The corrosion inhibitor provided by the invention has the advantages of low consumption, small toxicity, high efficiency and strong retention capacity, can effectively inhibit the metallic copper from corrosive attack, and has wide application prospects.

The invention relates to a device for removing gases with peculiar smells. The device comprises a cleaning device and a peculiar smell remover. The cleaning device is connected with the peculiar smellremover through an air hose, and a suction pump is arranged on the air hose between the cleaning device and the peculiar smell remover. The cleaning device is internally provided with a spraying device and a gas distributing device. The spraying device and the gas distributing device form a gas-water mixing zone during operation. The peculiar smell remover is internally provided with a gas flow control box, an ultraviolet sterilizing device and a filter element device. The gas flow control box, the ultraviolet sterilizing device and the filter element device are sequentially connected from top to bottom, and a control sensor is arranged between the gas flow control box and the suction pump. A gas inlet is arranged on the lower portion of the cleaning device. A gas outlet is arranged on the outer side of the peculiar smell remover. The device for removing the gases with the peculiar smells has the advantages of compact structure, small occupied area, flexibility and convenience in mounting, good effect of removing the peculiar smells and foul smells, and good purifying effect.

The present disclosure relates to a driving tool which operates a piston by compressed air to drive out a fastener, and particularly to a technology for preventing a foreign matter from entering an O-ring groove and the like of a head valve. The driving tool is provided with a foreign matter removing member (37) with a protruding portion (37c) facing a circumferential surface of a head valve (34). Therefore, a sealed port (34b) is covered by the foreign matter removing member (37), thereby preventing the foreign matter such as ice (50) from entering the sealed part (34b). When the head valve (34) slides to move relatively with respect to the foreign matter removing member (37), the protruding portion (37c) functions in a manner of erasing the circumferential surface of the head valve (34), and the ice (50) attached on the circumferential surface of the head valve (34) can be removed by the foreign matter removing member (37).