Background and Overview
Tetrahydroxybenzoquinone is a chemical substance.
Apply [1]
1. Used to prepare ketonic acid
Keto acid is an important chemical intermediate with a wide range of uses. It can be used to prepare infrared fluorescent materials, digital imaging and imaging materials. CN201310091768.
Follow the following steps:
(1) Preparation of nano-copper oxide catalyst
Weigh copper acetate in a muffle furnace, gradually heat it to 300°C and calcine for 12 to 18 hours, then take it out and cool it to room temperature. Use sufficient concentrated nitric acid to acidify and decompose the remaining copper acetate; Filter the liquid, wash the filtered black filter cake with deionized water, then put it into a drying box, dry it at 120 to 160°C to obtain a dark brown powder, which is the nano copper oxide catalyst, seal it and place it in a dryer Reserve;
(2) Preparation of gram keto acid
Mix the copper oxide catalyst obtained in the previous step with tetrahydroxybenzoquinone and anhydrous potassium carbonate in proportion to a three-necked flask, add deionized water, heat to reflux under magnetic stirring conditions for 40 to 60 minutes, and then cool to At room temperature, a yellow liquid was obtained; filter the above liquid, wash the filter cake with hot water, combine the filtrate and washing liquid, add sufficient concentrated hydrochloric acid to acidify; prepare a saturated solution of barium chloride, and pipette the saturated solution of barium chloride in into the above solution, then continue stirring and heating to 90°C; cool the liquid to room temperature, filter to obtain the yellow barium salt precipitate, put it into an oven and dry it at 100°C for 30 to 40 minutes; transfer the dried product to a three-necked flask, add no Water methanol, add concentrated sulfuric acid under stirring conditions, heat to reflux for 20-30 minutes, the reaction is completed, cool and let stand, filter out the white barium sulfate precipitate; wash the obtained precipitate with ethyl acetate, and combine the washing liquid with the previous filtrate , the solvent was removed by rotary evaporation in a rotary evaporator to obtain yellow crystals, which were washed with acetone and then dried to obtain ketonic acid.
2. Used to prepare a lightweight and high-strength composite metal material
CN201610446866.4 provides a lightweight and high-strength composite metal material and a preparation method thereof. By combining specific raw materials and matching the corresponding production process, a lightweight and high-strength composite metal material is obtained, which is light in weight and high in strength. , can meet the requirements of the industry and has good application prospects. The lightweight and high-strength composite metal material is made of the following raw materials by weight: 10-15 parts by weight of titanium alloy, 3-5 parts by aluminum alloy, 4-9 parts by nickel alloy, 5-9 parts by tin, and 4-6 parts by copper. , 2-3 parts of neodymium, 2-3 parts of niobium, 2-4 parts of indium, 2-3 parts of cadmium, 5-10 parts of silicon carbide, 7-12 parts of silicon dioxide, 11-15 parts of acetate fiber, 3 parts of polysulfone -10 parts, 3-7 parts of polyvinylpyridine, 3-7 parts of tetrahydroxybenzoquinone, 5-9 parts of isopropyl acetate, 3-5 parts of meta-thiocresol, 2-4 parts of p-aminotoluene-orthosulfonanilide , 3-6 parts of denaturant, 5-10 parts of heat stabilizer. Preparation method, including the following steps:
(1) Weigh each raw material according to weight;
(2) Add titanium alloy, aluminum alloy, nickel alloy, tin, copper, neodymium, niobium, indium, cadmium, silicon carbide, silicon dioxide, and heat stabilizer to the crucible resistance furnace, vacuum, vacuum sintering, and sintering The temperature is 900-960°C and the sintering time is 2.5-4 hours to obtain a vacuum sintering mixture;
(3) Then cool the vacuum sintering mixture to 350-380°C in an inert gas, then pour it into a three-roller mixer and stir for 30-60 minutes. The internal mixing temperature is 450°C, and add acetate fiber in sequence. , polysulfone, polyvinylpyridine, tetrahydroxybenzoquinone, isopropylene acetate, stirring speed is 500-800 rpm;
(4) Add meta-thiocresol, p-aminotoluene-orthosulfonanilide and denaturant to the mixture obtained in step (3), stir evenly and then pressurize to 2-5MPa, stirring speed is 400-800 rpm/ minutes, the stirring temperature is 450°C, and the temperature is maintained and stirred for 1 hour;
(5) Inject the mixture obtained in step (4) directly into the mold for compression molding, and place the molded material directly into a -30°C low temperature box to cool for 20-30 minutes;
(6) Put the low-temperature-cooled molding material into an inert gas preservation box and cool it to room temperature to obtain the finished product.
The beneficial effects are: the lightweight and high-strength composite metal material of the present invention uses titanium alloy, aluminum alloy, nickel alloy, tin, copper, neodymium, niobium, indium, cadmium, silicon carbide and silicon dioxide as main components. By adding cellulose acetate, polysulfone, polyvinylpyridine, tetrahydroxybenzoquinone, isopropyl acetate, m-thiocresol, p-aminotoluene orthosulfonylanilide, denaturant, heat stabilizer, supplemented by vacuum sintering and high-temperature internal mixing , pressurized stirring, die cooling and other processes, the prepared lightweight and high-strength composite metal materials are light in weight and high in strength, which can meet the requirements of the industry and have good application prospects.
3. Used to prepare an antibacterial composite metal material
CN201611166283.2 provides a preparation process of antibacterial composite metal materials. Through a specific production process, supplemented by a suitable combination of raw materials, the prepared antibacterial composite metal materials have excellent resistance to many different types of bacteria. Antibacterial effect can meet the requirements of the industry and has good application prospects.
The purpose of the present invention can beAchieved through the following technical solution: a preparation process of antibacterial composite metal materials, including the following steps:
(1) Pour 50-60 parts of iron powder, 20-28 parts of tantalum powder, 12-18 parts of tin powder, 6-8 parts of nickel acetylacetonate, 4-6 parts of silicon carbide, and 10-15 parts of kaolin Grind in a mortar until evenly mixed, then send the mixed powder into a planetary ball mill, add an appropriate amount of alcohol for wet ball milling, and then place the ball-milled mixed powder in a vacuum drying box and dry it at 85°C. Set aside;
(2) Add 16-20 parts of dicyanoacrylate, 12-18 parts of n-butyl acetate, 8-10 parts of five-carbon aldose, and 4-6 parts of methylbenzotriazole into the ultrasonic oscillator Ultrasonicate to disperse evenly, then add the mixed powder prepared in step (1), and continue ultrasonic treatment for 30-45 minutes to obtain an ultrasonic mixture;
(3) Add 8-10 parts of 4-butoxyphenylmethanol, 5-7 parts of dehydroacetic acid, 2-4 parts of erucic acid amide, and 1-3 parts of tetrahydroxybenzoquinone into the stirring kettle and mix, then Add 2 times the mass of 10% sodium bicarbonate solution and stir for 50 minutes at a speed of 750-850 rpm to obtain the stir-processed mixture;
(4) Inject the ultrasonic treatment mixture obtained in step (2) and the stirring mixture obtained in step (3) into a double-roller mixer for mixing. The pressure is 15 MPa, the reaction temperature is 550°C, and the reaction time is 3 hours. , get the mixed product;
(5) Put the mixed product obtained in step (5) into the mold, and perform cold pressing molding at a pressure of 550-650MPa, with a pressure holding time of 3 minutes;
(6) Add the cold pressed product into the crucible resistance furnace, then add 3-5 parts of heat stabilizer and 3-5 parts of denaturant, vacuum and then sinter under vacuum. The sintering temperature is 980-1020°C. The sintering time is 1-2 hours to obtain a vacuum sintering product;
(7) The vacuum sintering product is surface ground, deburred, and then immersed in oil to obtain the finished product.
Compared with existing technology, its beneficial effects are:
(1) The present invention adopts the method of first grinding and mixing iron powder, tantalum powder, tin powder, nickel acetylacetonate, silicon carbide and kaolin, wet ball milling and vacuum drying to obtain a vacuum dry mixture, and then dicyanoacrylic acid ester, n-butyl acetate, five-carbon aldose, and methylbenzotriazole were subjected to ultrasonic vibration, and then the aforementioned vacuum-dried mixture was added to the ultrasonic vibration again, and mixed with stirred 4-butoxyphenylcarbinol and dehydroacetic acid. The preparation process of mixing, erucic acid amide and tetrahydroxybenzoquinone, and finally cold pressing and vacuum sintering to obtain the finished product makes the prepared antibacterial composite metal material have excellent antibacterial effect on many different types of bacteria and can It meets the requirements of the industry and has good application prospects. (2) The raw materials used in the preparation process of the antibacterial composite metal material of the present invention are cheap and the process is simple. It is suitable for large-scale industrial application and has strong practicability.
Main reference materials
[1] CN201310091768.X A method for preparing gram ketone acid using nano-copper oxide as a catalyst
[2] CN201610446866.4 A lightweight and high-strength composite metal material and its preparation method
[3] CN201611166283.2 Preparation process and application of antibacterial composite metal material
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