51results about How to "Less volatile" patented technology

The invention discloses a synthetic method of a high-activity rigid foam polyether polyol. In the method, a mixed initiator is polymerized with an epoxy compound at the pressure of 0-0.5MPa and the temperature of 50-150 DEG C by taking an amine compound as a catalyst to obtain the polyether polyol; the mixed initiator consists of a polyol compound and a urea compound or consists of the polyol compound, a polyamine compound and the urea compound, and the urea compound accounts for 30-70% of the total weight of the mixed initiator in the mixed initiator. The polyether polyol synthesized by the method is characterized by high activity, low viscosity and low cost, can be used for the preparation of rigid polyurethane foam, and is especially applicable to the preparation of spraying polyurethane.

The invention relates to alloy smelting methods, in particular to a smelting method of nickel-based high-temperature alloy. The smelting method includes following steps: adding graphite accounting for 50% of total carbon content of the high-temperature alloy into a vacuum furnace crucible, placing at the downmost bottom of the crucible, and adding all elements, except for aluminum, titanium, boron and nickel, in the high-temperature alloy into the vacuum furnace crucible for smelting; heating, adding remaining graphite into the crucible, refining, and then cooling; adding metal calcium, and heating for refining after the metal calcium is smelted completely; cooling, adding aluminum and titanium, and heating until aluminum and titanium are smelted fully; adding nickel-boron alloy, and heating the nickel-boron alloy is smelted; cooling, freezing metal melt, heating, and tapping for pouring. By using the smelting method, content of harmful gas and low-smelting-point harmful impurities in the high-temperature alloy is lowered, pure alloy melt is obtained, alloy element segregation is reduced, and alloy performance is guaranteed.

The invention relates to the field of damping materials, in particular to a sprayable baking type water soluble damping coating and a preparation method thereof. The sprayable baking type water soluble damping coating is prepared from, by weight, 10-50 parts of acrylic emulsion, 5-20 parts of emulgator, 0.1-10 parts of neutralizer, 1-20 parts of a dispersing agent, 1-15 parts of cosolvent, 10-80 parts of pigment filler and 1-50 parts of water. By means of a high-pressure spraying means, the thickness of a coating layer is fixed to be about 0.5-5 mm, sagging does not exist, after baking at the high temperature of 100-200 DEG C, curing can be achieved quickly, bubbling and disengaging do not occur, and the functions of vibration and noise reduction can be enhanced; water serves as a main solvent, so that the coating does not contain benzene volatile matter and does not seriously hurt the human health, and adopted equipment and tools can be washed through water; the needed raw materials are easy to get, the production process is simple, construction is convenient, operation is easy, the added value of products is high, the domestic blank is filled, and the coating can be greatly applied to the industries of automobiles, locomotives and the like.

The invention discloses a stereolithography rapid protoyping photosensitive resin prepared by using polypropylene glycol diglycidyl ether diacrylate as prepolymer, and a preparation method for the stereolithography rapid protoyping photosensitive resin. The resin is characterized by being prepared from the following raw materials in percentage by mass: 10 to 70 percent of polypropylene glycol diglycidyl ether diacrylate, 5 to 75 percent of epoxy resin, 5 to 55 percent of oxacyclobutane compound, 1 to 12 percent of cationic initiator, and 1 to 10 percent of free radical photopolymerization initiator. The method comprises the following steps of: mixing the raw materials in the mass ratio, and stirring at the temperature of between 20 and 80 DEG C for 5 to 120 minutes to ensure that a mixture becomes transparent faint yellow uniform liquid. The prepared photosensitive resin is low in irritation and volatile matter content, and is easy and convenient to prepare, and is high in photosensitiveness; and the critical exposure capacity Ec of the resin is less than 16.0mJ/cm<2>; formed parts are high in precision, and the camber factor CF(6) of the formed parts is +/-0.01, and CF (11) is +/-0.03. Parts with any complex shape and high precision can be directly prepared from the resin and the preparation cost of the resin is much lower than that of the photosensitive resins of the same kind.

The invention relates to an electrochemical gas sensor and a device packaging method thereof. The electrochemical gas sensor comprises an upper cover plate, an electrode plate and a substrate; the upper cover plate adopts a porous ceramic material, and to-be-measured gas can enter the sensor through ceramic micro pores; the back surface of the electrode plate is equipped with a micro-spacing sensor electrode of a three-electrode coplanar system, wherein the electrode is covered with a solid electrolyte layer and is sealed in a groove of the substrate; and the electrode plate is coupled to thesubstrate through an adhesive and is electrically connected with the substrate through gold wire binding. The sensor is less in components, small in size, high in sensitivity and long in service life.

The invention relates to an alloy smelting process, and specifically relates to a vacuum smelting process for a nickel-based alloy containing aluminium, titanium, boron and zirconium. The vacuum smelting process comprises the following steps: adding all elements in the nickel-based alloy except aluminium, titanium, boron, zirconium and nickel into a vacuum furnace crucible, and smelting; cooling molten metal to 1370-1390 DEG C, adding aluminium and titanium into the molten metal, and heating until the aluminium and titanium are completely fused; keeping a temperature of 1410-1430 DEG C, adding a nickel-boron alloy and zirconium into the molten metal, and heating until the nickel-boron alloy and zirconium are completely fused to obtain molten metal; and cooling, freezing the molten metal, and while lowering the temperature to 1360-1380 DEG C and then heating to 1450-1470 DEG C, carrying out steel-tapping pouring. According to the vacuum smelting process disclosed by the invention, the contents of harmful gases and low-melting-point impurities in the molten metal are reduced, the molten alloy is pure, the chemical ingredients of the alloy are uniform, and the comprehensive mechanical properties and quality of the alloy achieve the level of domestic and international high-quality alloys.

The invention discloses light alkyd resin for interior decoration and furniture coating, which is formed by the following raw materials: glycerol, palmitoleic acid, benzoic acid, hexanedioic acid, neopentyl glycol, phthalic anhydride, tetramethylolmethane and dimethylbenzene; the preparation method comprises the following steps: a. the palmitoleic acid, the benzoic acid, the hexanedioic acid, the glycerin, the neopentyl glycol, the phthalic anhydride, the tetramethylolmethane and the dimethylbenzene are thrown in a reactor one time, are heated and are stirred; b. carbon dioxide gas flows in the reactor to protect temperature rise, when the temperature is raised to 130-180 DEG C and kept for 1-3 hours, at the moment, the dimethylbenzene flows back, and then the temperature is raised to 200 plus/minus 5 DEG C at the temperature raising speed with 8-12 DEG C per hour, and then the temperature is kept for 4-8 hours; c. a sample is taken out in the step b for measuring viscosity, when the viscosity reaches desired value, the temperature is cooled to 130-180 DEG C, so as to obtain the modified alkyd resin; d. the alkyd resin in the step c is transferred to another reactor, and then 2.5-8.5 percent of dimethylbenzene is added, the mixture is mixed uniformly to obtain the water-white alkyd resin liquid.

The invention discloses an epoxy resin and nitrile rubber adhesive and a preparing method thereof. The epoxy resin and nitrile rubber adhesive is prepared from raw materials comprising, by weight part ratio, 100-120 parts of styrene, 100-150 parts of ethyl acetate, 20-25 parts of nitrile rubber N230S, 15-20 parts of dimethylbenzene, 1-2 parts of 4,4`-diphenylmethane diisocyanate, 8-12 parts of polyisobutene, 2-3 parts of 3-aminopropyltrimethoxysilane, 2-3 parts of polytetramethylene ether glycol, 3-5 parts of SG-2 type polyvinyl chloride (PVC) resin, 1-2 parts of ferrocene, 15-20 parts of modified epoxy resin, 5-8 parts of ethylene propylene diene monomer, 2-5 parts of phthalic acid ester and the like. The adhesive has excellent heat resistance and impact resistance, and is high in bonding strength, water-proof and damp-proof, good in storage stability, low in number of volatile matters during the solidification process, good in environmental protection property and using effect, convenient and wide in range of application.

A liquid crystal plate for storing a liquid crystal material for simultaneously injecting it into a plurality of liquid crystal panels and liquid crystal injection apparatus and method using such liquid crystal plate are disclosed. The liquid crystal plate has a recess for storing the liquid crystal material and a pair of raised members such as ribs, baffles or the like at both end portions of the recess in parallel with the outermost liquid crystal panels. The raised members have the height at least equal to the top surface of the liquid crystal material filled in the recess for maintaining the liquid crystal characteristics of the liquid crystal material injected into the plurality of liquid crystal panels substantially uniform regardless of the location in a cassette.

The invention discloses a highlight low-volatile polybutylene terephthalate (PBT) composition as well as a preparation method and application of the composition. The highlight low-volatile PBT composition comprises the following components: 100 parts of PBT resin, 2-20 parts of PET (polyethylene terephthalate) resin, 0-20 parts of glass fiber, 0.5-2 parts of highlight auxiliary, 0.5-2 parts of black seeds and 0.1-2 parts of auxiliary. The preparation method comprises the steps of mixing the PBT resin, the PET resin, the highlight auxiliary, the black seeds and the auxiliary in a high-speed mixer for 1-2min to obtain a premix; melting and extruding the premix by using a double screw extruder; laterally feeding the glass fiber; carrying out two-stage vacuum granulation to obtain a finished product. The highlight auxiliary is introduced to the PBT composition, so that the glossiness of the material and the output rate of a highlight product can be effectively increased on the premise that the mechanical performance and processability of the composition are not affected, and the prepared PBT composition is high in glossiness, good in flowability, few in volatile matters, favorable in mechanical performance and processability and suitable for products such as electronic and electrical products, automobile lamp ornaments and the like with highlight requirements.

The invention discloses an environment-friendly and energy-saving biological fuel which comprises the materials in parts by weight: 70-80 parts of a biomass briquette fuel, 10-15 parts of coal, 6-7 parts of hexamine, 3-5 parts of ethyl alcohol and 1-3 parts of stearic acid. A preparation method comprises the steps of smashing the biomass briquette fuel, uniformly mixing the smashed biomass briquette fuel with the solid ethyl alcohol and the stearic acid, then smashing the coal blocks, adding the coal, continuing to fully stir the materials, and finally adding the hexamine. According to the biofuel obtained by the technical scheme, the carbon content is increased; due to the characteristic of high oxygen content, the combustion heat value of the fuel is increased; volatile matters generated in the beginning of combustion can be effectively reduced by adjusting formula, and environment protection is facilitated.

The invention relates to the field of carbon dioxide capture, and relates to an alpha-amino acid salt absorbent for capturing carbon dioxide. The absorbent comprises the following components in percentage by volume: 15 to 40 percent of alpha-amino acid salt, 5 to 15 percent of dissolution promoter, and 2 to 8 percent of absorption promoter. The brand-new alpha-amino acid salt absorbent is formed by mixing the specific main absorbent alpha-amino acid salt, the absorption promoter, the dissolution promoter and water according to a proper ratio. Compared with the prior art, the absorbent has thefollowing beneficial effects and effects: the amino acid salt has extremely low vapor pressure and low volatilization and operation loss; good anti-oxidative degradation performance is realized, and the service life is greatly prolonged; and the dissolution promoter is added, so that the solubility of the amino acid salt is greatly improved, and the carbon dioxide saturated absorption capacity ofthe solvent is greatly improved.

The present invention discloses a loquat fruit jelly. Its composition contains (by wt%) 50-80% of loquat extract, 0.6-1.2% of edible gelatin, 12-16% of edible sugar and 0.07-0.10% of edible essence, and the rest is pure water. In the loquat extract 0.008-0.0125% of amygdalin is contained, said amygdalin has the effects of resolving sputum, relieving cough and resisting senility.

The invention relates to a degradable master batch for a BOPP film, a preparation method thereof and a BOPP film. The degradable master batch for a BOPP film comprises the following components in percentage by weight: 45-96.3% of polypropylene resin; 0.2-10% of a pre-oxidant; 1-30% of natural biomass; 1-5% of a plasticizer; 1-5% of a compatilizer; and 0.5-5% of a lubricant; wherein the pre-oxidantis a photo-degradation pre-oxidant and/or a thermal degradation pre-oxidant; the preparation method comprises the steps of raw material mixing and conveying, melt extrusion, granulation and post-treatment. Each layer of the BOPP film is prepared by melting and blending polypropylene and the degradable BOPP film master batch and then biaxially stretching, and the degradable BOPP film master batchaccounts for 0.1-1% of the weight of each layer. According to the degradable master batch for a BOPP film, the prepared BOPP film is degradable, green and environmentally friendly, the thickness of the BOPP film is uniform, film breakage is little, and the problems of fish eyes and crystal points cannot be caused.

The invention provides a three-dimensional intelligent liquid preparing system. Through three-dimensional design, the three-dimensional intelligent liquid preparing system has the functions of managing samples, performing diluting, performing mixing, performing homogenizing and making the volume constant, and comprises four device namely an intelligent sample management device, a sample dispatching device, a solution preparing device and a process optimizing and controlling device, wherein the intelligent sample management device is arranged on a lower layer, and comprises five modules of inputting the samples, optimizing stock, recognizing, tracing quality and managing sample cells; the solution preparing device is arranged on the upper layer and comprises modules of a service position rotary table, an uncapping/capping module, a sample transferring module, an injection module, a cleaning module, a diluting module and a homogenizing module, wherein the uncapping/capping module can reduce sample volatilization, deterioration and pollution; and the sample dispatching device conveys samples between the intelligent sample managing device and the solution preparing device and comprises a sample conveying module and a loading/unloading transferring module; and the process optimizing and controlling device automatically generates a preparing method, and the intelligent sample managing device, the sample dispatching device and the solution preparing device are controlled to perform a preparation course in a synergistic manner.