33results about How to "Will not cause decomposition" patented technology

The invention discloses a method for preparing hydroxypropyl-beta-cyclodextrin, which comprises the steps of etherification, neutralization, decoloring, nanofiltration, resin purification, and spray drying. The method of the invention is small in pollution, and the yield in weight is more than 80 percent; meanwhile, the product prepared by using the method of the invention is narrow in substituted ratio range and low in impurity content, and can be used as a pharmaceutic adjuvant.

The invention relates to a dipping resin with the surface covered by an ionic liquid film containing extractant, and a fabrication method as well as application thereof. The ionic liquid containing the extractant is fixed in adsorption resin XAD-7; acid or alcohol or heat is not required to be added by using a direct dipping method, the stability of the ionic liquid is hardly affected, and the loading of ionic liquid matrix system in the material is large. Solid-liquid extraction is carried out by using the dipping resin, therefore, the contact area of ion liquid phase and water phase can be effectively increased, the mass transfer efficiency of the system can be improved, clamp strap loss of the ionic liquid can be reduced, and the phenomena of emulsion, phase splitting, etc. in the extraction process can be improved. In an extraction restriction complexation method, complexation agent is added in the water phase, and the extraction efficiency of the ionic liquid phase on the target metallic ions and selection among different metallic ions are improved by the difference of stability constants between the complexation agent and the metallic ions, thus effectively avoiding the phenomena of extraction efficiency reduction and ionic liquid decomposition in the separation process by adjusting the pH value. The two methods can be combined to be applied to imetallic ion separation with excellent separation effect.

The invention discloses a coating water repellent agent and a preparation method thereof. The coating water repellent agent is a polyamide polyurea epichlorohydrin resin water solution with the solid content (mass content) of 50 percent to 60 percent, wherein, the mass percentage of organic chloride is less than 0.1 percent, the pH is equal to 6 to 8, viscosity is 150mP question mark s to 450mP question mark s. 10 percent of acid is added as a reaction additive in the reaction, which causes the product weight solid content generated at the final stage of the reaction and the coating property to be improved. Furthermore, low temperature reaction is adopted during the cross-linked reaction process with epichlorohydrin, then slight heating is carried out and ethanolamine is added for further reaction, thus reducing the organic chloride content of the generated byproduct, and reducing the organic chloride content of the whole product, which is kept at the level of less than 0.1 percent.

The invention relates to a method and a device for refining sulfoxide chloride. The method comprises the following steps: after rectifying a crude product generated in a sulfoxide chloride synthesis step, performing overvulcanization and condensation on the rectified light component, putting a liquid-phase component obtained through gas-liquid separation into a rectification cycle and putting a gas-phase component obtained through gas-liquid separation into a synthesis step cycle; condensing the gas-phase component generated after the rectified light component is subjected to first vacuum distillation and then putting the condensed gas-phase component into the synthesis step cycle, and performing second vacuum rectification on a heavy component; performing overvulcanization and condensation on the light component obtained by virtue of the second vacuum rectification, returning the liquid-phase component obtained through gas-liquid separation to the second vacuum rectification step cycle, and returning the heavy component to the rectification step cycle; putting the gas-phase components obtained in the two stages of vacuum rectification steps into the synthesis step cycle, respectively. According to the method, a tower system sequence is arranged reasonably, the easily decomposable components are separated under vacuum and at a controlled temperature, and the components difficult to separate are cyclically rectified, and therefore, the separation accuracy and the product quality are improved; after multi-stage rectification, the purity of sulfoxide chloride is above 99.9%.

Different from the scheme that an organic material layer is separately used as a sacrificial layer of an MEMS (Micro-Electro-Mechanical-System) device, the invention adopts the following scheme that after the organic material layer is patterned, a covering layer with the decomposition temperature higher than that of the organic material layer covers the surface of the patterned organic material layer, so that a subsequent deposited structural material layer is isolated from the organic material layer to play a role of preventing a machine cavity from being polluted due to the decomposition and escape of the organic material layer in the high-temperature deposition process. In addition, the covering layer provides a larger material selection range for the organic material layer. Based on the sacrificial layer, the invention also provides the MEMS device comprising the sacrificial layer and a manufacturing method of the MEMS device.

The invention discloses a method for manufacturing a dry-pressing heterosexual permanent-magnetic material, and belongs to the technical field of a permanent-magnetic material. The method comprises the following steps: crushing a pre-sintering material into crude powder, adding a quadratic formula formed by silicon dioxide and a boric acid to the crude powder and then carrying out ball-milling; scattering the slurry obtained in a ball-milling manner after baking; adding 0.1-3.0% of calcium carbonate according to the weight percent and then agitating and vibration and milling by a blender mixer to obtain mixed powder; adding allocated quantity of camphor powder and calcium stearate to the mixed powder, and then crushing at a high speed, so as to prepare the dry-pressing magnetic powder. Even dispersion can be ensured by adding the calcium carbonate after drying of fine powder is finished, and adhesion of particles is not generated. Therefore, the pressing density of a magnetic body and the control range of the drying temperature range can be improved, and meanwhile, birdnesting is opened as much as possible by a vibration and milling process. Thus, birdnesting between particles is reduced, meanwhile, a corner angle is removed, the prepared permanent-magnetic material has good orientation degree and density, and the performance is significantly improved.

The invention provides a method for preparing a nano-hydroxyapatite gradient coating on a titanium alloy matrix, and relates to a nano HA/ insert ceramic gradient coating using biologic inert ceramic as a transition layer on the titanium alloy matrix. A dip-coating-sintering method is provided. The method is characterized in that the titanium alloy matrix is pre-treated; inert ceramic suspension liquid and nano HA/ inert ceramic suspension liquid are prepared; an inert ceramic transition layer is prepared by dip-coating and sintering, and a nano HA/ inert ceramic composite layer is prepared by dip-coating and sintering, wherein argon is treated as the sintering atmosphere. According to the method, a low-melting-point biologic inert ceramic is introduced to be used as a transition layer during the preparation of the gradient coating, so that the problem of poor combination strength caused by mismatching of expansion coefficient and elasticity modulus of titanium alloy and HA can be solved; in addition, HA cannot be decomposed in low-temperature sintering, and the low temperature is 800 to 850 DEG C, so that the biological activity and the stability of hydroxyapatite remain; moreover, the method is simple, easy to carry out, short in production cycle, low in cost, and capable of preparing the coating on an implant with a complex shape.

The invention relates to an extraction method of stone coal extracted vanadium. The extraction method comprises the steps that firstly, stone coal is produced to be stone coal ore pulp through pre-treatment procedures of smashing-ore grinding by adding water; low-concentration hydrochloric acid serves as a leaching agent to firstly leach impurities such as potassium, calcium, magnesium and aluminum, and one-stage ore concentrate and one-stage immersion liquid are obtained; the one-stage ore concentrate is floated by using a regulating agent, an inhibitor and a collecting agent, and fuel carbonand vanadium ore concentrate are obtained; the vanadium ore concentrate is dehydrated, dried and ground to be powder, and the ore concentrate dry powder is produced; sulfuric acid serves as an adhesive, the ore concentrate dry powder is shaped and aged in the air; the aged pellet is salinized at the temperature of 200-330 DEG C, vanadium in the pellet is converted to be soluble vanadium sulfate,and a salinized pellet is obtained; and the salinized pellet is subjected to leaching by using water, and second-stage immersion liquid and leached slag are obtained. The leaching rate of vanadium canbe as high as 90-96%, and the industrialized application prospect is good.

The invention discloses a preparation method for a tree trunk whitening agent, and belongs to the technical field of agricultural material preparation. The preparation method for the tree trunk whitening agent comprises the following steps: first, sealing and fermenting bean curd, chilli powder, nutmeg powder and the like, filtering, collecting fermentation liquor, and mixing the fermentation liquor and sterile water, saccharose, citric acid and the like; then, performing constant temperature culture on a mixture, and mixing and fermenting with the plants, such as herba portulacae and chrysanthemum; sterilizing by utilizing ultraviolet light; collecting a fermented mixture, pulping, and performing centrifugal treatment with activated carbon; concentrating the obtained supernatant, and stirring uniformly with the supernatant, quick lime, hydroxymethyl cellulose and the like; finally, collecting the mixture, and performing sterilizing and disinfecting to obtain the tree trunk whitening agent. The tree trunk whitening agent prepared with the preparation method is purely white in colour and high in covering property; by adding the substances with high adhesive force and good film forming property, all of the adhesive property, the film forming property and the rainwater erosion resistance of the whitening agent can achieve a lasting effect; meanwhile, the whitening agent does not peel off easily after being used, has a relatively good heat preserving effect and a pest and disease damage preventing effect, is required to be applied only once, and has an excellent application prospect.

The invention provides a drill bit device integrating underground water rapid getting and in-situ injection repairing functions, and relates to the field of environment repair. The drill bit device integrating the underground water rapid getting and in-situ injection repairing functions comprises a drill bit, an injection head and a casing pipe, the drill bit is fixedly mounted on the bottom of the injection head, an injection cavity is formed in the injection head, multiple injection holes are formed in the outer wall of the injection cavity, a limiting device is mounted between the injectionhead and the casing pipe, and a small connection head is mounted on the top of the casing pipe, and is of a middle through structure. The device has the beneficial effects that low-disturbance underground water rapid getting can be carried out on various stratums (including a fine sand layer), meanwhile, the drill bit can be used for carrying out fixed-depth direct pushing type in-situ injection,and according to stratum and pollutant distribution characteristics, the injection depth can be flexibly adjusted.

The invention relates to the field of pharmaceutical engineering, in particular to a tiopronin sterile powder and a preparation and a preparation method thereof. The preparation method disclosed by the invention comprises the following steps of: adding an ethyl formate-dissolvable tiopronin raw material into an active carbon heat removing source for injection; adding ether or methyl tert-butyl ether for recrystallizing; and drying at a low temperature to obtain tiopronin sterile powder which is free from pyrogen and has high purity. The preparation method disclosed by the invention is easy and convenient to operate, and has high yield; and the obtained tiopronin sterile powder has high purity and safe and reliability quality, is suitable for preparing a tiopronin sterile powder injection, and can be widely applied to mass production of tiopronin sterile powder injections.

The invention discloses high temperature resistant plastic which is prepared from the following raw materials in parts by weight: 9-16 parts of PS plastic, 1-3 parts of SMA, 7-9 parts of polyethylene, 5-7 parts of nano-titania, 4-10 parts of glycidyl methacrylate, 5-10 parts of phenolic resin, 1-4 parts of aluminite powder, 6-11 parts of p-toluenesulfonic acid, 6-8 parts of MCA, 5-9 parts of phenyl salicytate, 2-6 parts of zinc oxide, 1-3 parts of chitosan, 3-5 parts of bamboo fiber and 2-6 parts of starch. The high temperature resistant plastic has the following benefits: the high temperature resistant plastic has excellent high temperature resistance; under high temperature, the mechanical property can be ensured, and poison decomposition is avoided.

The invention provides a frame-sealing glue composition which comprises a frame-sealing glue and micro-spheres scattered in the frame-sealing glue, wherein each of the micro-spheres comprises a closed first shell and a closed second shell; the second shell is located in the first shell; a cavity exists between the first shell and the second shell; a first matter is packaged in the cavity between the first shell and the second shell; a second matter is packaged in the second shell; when the pressure borne by the first shell and the second shell exceeds a preset pressure, the first shell and the second shell break, so as to cause the first matter to be in contact with the second matter; and the first matter reacts with the second matter by contacting, so as to release the heat for solidifying the frame-sealing glue. The invention also provides an opposite assembling method and a display panel. When the frame-sealing glue provided by the invention is used for bonding two base plates arranged for opposite assembling, no ultraviolet irradiation is required.

The invention discloses a hydrophobic anti-fouling ultraviolet curing coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 40 to 50 parts of graphene modified bisphenol A type epoxy acrylic resin, 20 to 30 parts of a reactive diluent, 20 to 25 parts of a solvent, 5 to 10 parts of a photoinitiator, 1 to 5 parts of a leveling agent, and 0.1 to 1 part of functional acrylic resin containing double bonds. The preparation method comprises the steps: adding the components into a reaction container in parts by weight, and stirring and dispersing at a high speed for 3.5-5.5 hours. According to the invention, the problems of toughness strength, wear resistance and self-repairing of a common anti-fouling coating layer are solved.

The invention discloses an electrode for a supercapacitor and a preparation method and application thereof. The surface charge density of active materials such as super-capacity carbon is enhanced onthe basis of dielectric material polarization, and the specific capacitance is improved; the larger the dielectric constant of the dielectric material is, the better the effect of improving the specific capacitance is; direct contact between an electrolyte and an electrode plate is physically blocked through a sedimentary layer, and a voltage window is widened; and the sedimentary layer accelerates the seepage effect and is beneficial to the improvement of the rate capability.

A plant extraction used for reconditioning of cellular polystyrene and its preparation method and assemblage are disclosed. It is produced by: grinding the leaves of Eucalyptus citriodora Hook, Eucalyptus exserta F.Muell, Eucalyptus robusta Smith, kandelia candel, rhizophora stylosa, mint herb, soaking with water, distilling, collecting the oil, preparing the combination of materials adding in the accessories and the water by dispersing at high rate. Its advantages include: innocuous, contamination free, converting the huge waste cellular polystyrene into small rapidly, reclaiming and utilizing easily, volatilizing easily so as not to pollute the reclaimed waste cellular polystyrene, less dosage, low cost, conveniently using without heating and compressing, not having the cellular polystyrene analyzing, having high purity of the reclaimed product.